start-ver=1.4 cd-journal=joma no-vol=85 cd-vols= no-issue=11 article-no= start-page=405 end-page=412 dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=2021111 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Formation Mechanism of Tempering-Induced Martensite in Ti-10Mo-7Al Alloy kn-title=Ti–10Mo–7Al合金の焼戻し誘起マルテンサイトの形成機構 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The formation mechanism of αAA–martensite (αAAMt) induced by tempering at 450–550℃ for a short time was investigated using Ti–10Mo–7Al alloy. The solution treated and quenched (STQ) sample was composed of β phase and a small amount of αAAMq, and a large amount of αAAMt was generated by rapid tempering at 550℃–3 s using a salt bath. However, αAAMt was completely transformed into a single β phase by aging at 200℃ for 3 min. Reversibility was observed between the αAAMt transformation and the β reverse transformation. In–situ high–temperature X–ray diffraction measurements revealed that αAAMq → β reverse transformation occurred at 200℃ and that a thermally activated αAAiso was generated at 450℃ due to the slow heating rate. In–situ optical microscopic observation of STQ sample with rapid lamp heating revealed that αAAMt was formed during heating process. However, αAAMt did not generate under following conditions; that is, a slow heating rate, thin sample plate, and a small temperature difference until tempering by preheating. On the other hand, rapid tempering using thick plate from liquid nitrogen (−196℃) to 250℃ was performed to ensure a sufficient temperature difference, but αAAMt was not generated at all. From the cross–sectional observation of the STQ plate, it was found that αAAMq was hardly formed on the surface of the sample, but was formed abundantly inside the sample. On the other hand, in the rapidly tempered plate, a large amount of αAAMt was distributed in the surface layer than inside sample. These results suggest that the thermal compressive stress induced by rapid heat treatment contributes to the formation of α''M. en-copyright= kn-copyright= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=竹元嘉利 kn-aut-sei=竹元 kn-aut-mei=嘉利 aut-affil-num=1 ORCID= en-aut-name=YasunoMikiko en-aut-sei=Yasuno en-aut-mei=Mikiko kn-aut-name=安野実希子 kn-aut-sei=安野 kn-aut-mei=実希子 aut-affil-num=2 ORCID= en-aut-name=IkemotoMasaki en-aut-sei=Ikemoto en-aut-mei=Masaki kn-aut-name=池本雅基 kn-aut-sei=池本 kn-aut-mei=雅基 aut-affil-num=3 ORCID= en-aut-name=AndoHiroyuki en-aut-sei=Ando en-aut-mei=Hiroyuki kn-aut-name=安藤寛幸 kn-aut-sei=安藤 kn-aut-mei=寛幸 aut-affil-num=4 ORCID= en-aut-name=ShimizuIchiro en-aut-sei=Shimizu en-aut-mei=Ichiro kn-aut-name=清水一郎 kn-aut-sei=清水 kn-aut-mei=一郎 aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学大学院自然科学研究科 affil-num=4 en-affil=Faculty of Engineering, Okayama University kn-affil=岡山大学工学部 affil-num=5 en-affil=Faculty of Engineering, Okayama University of Science kn-affil=岡山理科大学工学部 en-keyword=α''–martensite kn-keyword=α''–martensite en-keyword=thermal stress kn-keyword=thermal stress en-keyword=tempering kn-keyword=tempering en-keyword=in situ observation kn-keyword=in situ observation en-keyword=reverse transformation kn-keyword=reverse transformation END start-ver=1.4 cd-journal=joma no-vol=5 cd-vols= no-issue= article-no= start-page=271 end-page=282 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20201230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Development of Placement Test Questions in Moodle for the Japanese Language Course kn-title=全学日本語コースのためのMoodleによる プレースメントテストの問題作成 en-subtitle= kn-subtitle= en-abstract= kn-abstract=岡山大学の全学日本語コースは現在，「全学日本語コースWebシステム」という独自のシステムを用いて，学内限定でオンラインによるプレースメントテストを行っている。このシステムの廃止が予定されていること，COVID-19の影響で学内への立ち入り制限が想定されることから，現システムに代わって学外からでも受験できる手段の準備が望まれている。そこで一つの解決策としてMoodleを用いたプレースメントテストの問題作成に取り組んだ。本稿ではMoodleによる聴解テストと文法テストの作成について紹介するとともに，今後の課題を述べる。 en-copyright= kn-copyright= en-aut-name=Yukako en-aut-sei= en-aut-mei=Yukako kn-aut-name=内丸裕佳子 kn-aut-sei=内丸 kn-aut-mei=裕佳子 aut-affil-num=1 ORCID= en-aut-name=SUWAMuneue en-aut-sei=SUWA en-aut-mei=Muneue kn-aut-name=諏訪棟植 kn-aut-sei=諏訪 kn-aut-mei=棟植 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil=岡山大学工学部機械システム系学科 en-keyword=プレースメントテスト kn-keyword=プレースメントテスト en-keyword=Moodle kn-keyword=Moodle en-keyword=全学日本語コースWebシステム kn-keyword=全学日本語コースWebシステム END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year= dt-pub= dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Agrostis avenacea J.F.Gmel. kn-title=ナンカイヌカボ en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-keyword=イネ科 (Poaceae) kn-keyword=イネ科 (Poaceae) END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue= article-no= start-page=839 end-page=842 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=201703 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=小論文の自動採点に向けたオープンな基本データの構築 および現段階での自動採点手法の評価 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakeuchiKoichi en-aut-sei=Takeuchi en-aut-mei=Koichi kn-aut-name=竹内孔一 kn-aut-sei=竹内 kn-aut-mei=孔一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=大野雅幸 kn-aut-sei=大野 kn-aut-mei=雅幸 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=泉仁宏太 kn-aut-sei=泉仁 kn-aut-mei=宏太 aut-affil-num=3 ORCID= en-aut-name=TaguchiMasahiro en-aut-sei=Taguchi en-aut-mei=Masahiro kn-aut-name=田口雅弘 kn-aut-sei=田口 kn-aut-mei=雅弘 aut-affil-num=4 ORCID= en-aut-name=InadaYoshihiko en-aut-sei=Inada en-aut-mei=Yoshihiko kn-aut-name=稲田佳彦 kn-aut-sei=稲田 kn-aut-mei=佳彦 aut-affil-num=5 ORCID= en-aut-name=IizukaMasaya en-aut-sei=Iizuka en-aut-mei=Masaya kn-aut-name=飯塚誠也 kn-aut-sei=飯塚 kn-aut-mei=誠也 aut-affil-num=6 ORCID= en-aut-name=AboTatsuhiko en-aut-sei=Abo en-aut-mei=Tatsuhiko kn-aut-name=阿保達彦 kn-aut-sei=阿保 kn-aut-mei=達彦 aut-affil-num=7 ORCID= en-aut-name=UedaHitoshi en-aut-sei=Ueda en-aut-mei=Hitoshi kn-aut-name=上田均 kn-aut-sei=上田 kn-aut-mei=均 aut-affil-num=8 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学工学部 affil-num=3 en-affil= kn-affil=岡山大学工学部 affil-num=4 en-affil= kn-affil=岡山大学院社会文化科学研究科 affil-num=5 en-affil= kn-affil=岡山大学院教育学研究科 affil-num=6 en-affil= kn-affil=岡山大学全学教育・学生支援機構 affil-num=7 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=8 en-affil= kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol=109 cd-vols= no-issue=390 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20100118 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Construction of Argument Structure Analyzer Toward Searching Same Situations and Actions kn-title=類似した動作や状況を検索するための意味役割及び動詞語義付与システムの構築(第1回集合知シンポジウム〜言語処理が紡ぎ出す未来〜) en-subtitle= kn-subtitle= en-abstract=This manuscript proposes an argument structure analyzer that can identify verb meanings and semantic roles of their arguments from not only for sentences but compound nouns. The motivation of development of this analyzer is we need a tool to find the same or quasi-same situations, actions and changes in events. For this purpose various levels of paraphrases should be identified taking into account context, however, the proposed analyzer focus on providing lexicon-based paraphrasable relations i.e., matching "employ/use/utilize these tools" and "employment of these tools''. In this paper we clarify how we construct the modules of the analyzer, i.e., identification of idioms, deverbal-noun-argument identification in compound nouns, identification of content verbs, and identification of predicate verb semantics and their semantic roles on the basis of example based matching. The base data of verb meanings we use is a Japanese Verb Thesaurus build in our previous work and freely distributed. kn-abstract=本研究では類似した動作や状態を検索するための基礎技術として,動作表現の類似関係を付与する項構造付与システムを構築している.項構造とは動詞と名詞の係り関係まで含めて動作の共通部分を記述するもので,例えば「XがYを逮捕する」「Yを捕まえる」には概念を共通していることを示す.本研究ではすでに,4425語(7473語義)の動詞に対して動詞間の項構造関係をシソーラス形式で整理して公開している.そこでこのオントロジーを基に規則ベースの項構造付与システムの構築を行った.本報告では項構造付与に必要なサブタスクとして,慣用句同定,複合名詞内係関係同定,主動詞探索を取り上げ事例による語義決定法について述べる.また,現状での語義付与精度について簡単な評価実験を行う. en-copyright= kn-copyright= en-aut-name=TakeuchiKoichi en-aut-sei=Takeuchi en-aut-mei=Koichi kn-aut-name=竹内孔一 kn-aut-sei=竹内 kn-aut-mei=孔一 aut-affil-num=1 ORCID= en-aut-name=TsuchiyamaSuguru en-aut-sei=Tsuchiyama en-aut-mei=Suguru kn-aut-name=土山傑 kn-aut-sei=土山 kn-aut-mei=傑 aut-affil-num=2 ORCID= en-aut-name=MoriyaMasato en-aut-sei=Moriya en-aut-mei=Masato kn-aut-name=守屋将人 kn-aut-sei=守屋 kn-aut-mei=将人 aut-affil-num=3 ORCID= en-aut-name=MoriyasuYuuki en-aut-sei=Moriyasu en-aut-mei=Yuuki kn-aut-name=森安祐樹 kn-aut-sei=森安 kn-aut-mei=祐樹 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学工学部情報工学科 affil-num=3 en-affil= kn-affil=岡山大学工学部情報工学科 affil-num=4 en-affil= kn-affil=岡山大学工学部情報工学科 END start-ver=1.4 cd-journal=joma no-vol=109 cd-vols= no-issue=234 article-no= start-page=1 end-page=5 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=20091009 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Bio-medical Term Extraction with Morpho-Syntactic Rules on Simple Rule Language kn-title=SRLを利用した規則ベースの感染症用語抽出 en-subtitle= kn-subtitle= en-abstract=Simple rule language, rule-based term extraction, bio-medical terms, Disease surveillance system Bio-medical term extraction is a key technology for a surveillance system of epidemic disease news from the Web. In the previous work we applied statistical learning model to extract terms from the Web site. The previous approach is good at extracting terms with high precision rates; however it is weak at extracting new terms that do not exist in the training data. Since we usually have new disease names a new term extraction approach with high coverage for unknown or low-frequent terms is needed. Recently, Simple rule Language (SRL), a rule-based word extraction language, is freely available. The SRL also has an developing environment called SRL editor. Thus we are constructing rules of bio-medical terms on the several language (such as English, Japanese, Thai and Vietnam) for the multilingual disease surveillance system. In this manuscript we confirm how we construct rules to extract Japanese bio-medical terms from Japanese news articles. kn-abstract=我々は感染症情報をWeb上から集めて提示するBioCasterシステムを構築している.感染症情報は各国のローカルニュースに速報が出ることが予測されることから英語のみならず日本語を含めたアジア言語での開発を進めている.核となる技術は感染症に関する用語を記事から見つける用語抽出であるが,既存の手法では学習データを利用した統計的学習モデルを利用して構築した.しかしながら,新たな病気など学習データに無い用語が現れた際うまく獲得できないことが予測されるため規則に基づく用語抽出システムの構築を行う.規則ベースで用語を抽出するシステムとしてSRL(Simple Rule Language)が公開されており,ユーザは語構成ならびに文脈を規則で記述することで用語を抽出できる.そこで本研究では感染症情報に必要な用語についてどのようにSRL上で定義できるかについて明らかにする. en-copyright= kn-copyright= en-aut-name=ShinnouTakashi en-aut-sei=Shinnou en-aut-mei=Takashi kn-aut-name=新納貴志 kn-aut-sei=新納 kn-aut-mei=貴志 aut-affil-num=1 ORCID= en-aut-name=TakeuchiKoichi en-aut-sei=Takeuchi en-aut-mei=Koichi kn-aut-name=竹内孔一 kn-aut-sei=竹内 kn-aut-mei=孔一 aut-affil-num=2 ORCID= en-aut-name=NigelCollier en-aut-sei=Nigel en-aut-mei=Collier kn-aut-name=ナイジェルコリアー kn-aut-sei=ナイジェル kn-aut-mei=コリアー aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部情報工学科 affil-num=2 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil= kn-affil=国立情報学研究所 END start-ver=1.4 cd-journal=joma no-vol=110 cd-vols= no-issue=245 article-no= start-page=13 end-page=18 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20101016 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Extraction of Verb Synonyms Using Graph-Based Clustering kn-title=グラフに基づくクラスタリングによる動詞類義語の獲得(自然言語の論理と感情) en-subtitle= kn-subtitle= en-abstract=This manuscript describes evaluation results of Kernel K-means clustering approach comparing with modified Aizawa's co-clustering approach for verb synonym extraction task. Kernel K-means approach is one of the state-of-the-art vector-based clustering method which can divide vector-spaces with non-linear boundary by incorporating Kernel method. Besides the mathematical framework of Kernel K-means can cover Spectral Graph Clustering. In this manuscript, however, we reveal Aizawa's co-clustering approach overcomes Kernel K-means on the verb synonym extraction task (bi-graph clustering) in Japanese. From this results we discuss that the equivalence between graph-vector space in Kernel K-means approach can be limited, and then Kernel K-means decease their accuracy in our verb synonym extraction. kn-abstract=本研究ではクラスタリングを利用して動詞の類義語を獲得する方法について検討している.先行研究において,同時に2つの要素のクラスタを考慮しながらクラスタリングする同時共起クラスタリングを適用して,ベクトルベースのクラスタリングより精度が高いことを示した.しかし,近年ベクトルベースのクラスタリングでKernel K-meansという非線形境界でクラスタリングするより高度な手法が提案された.そこで,本報告ではKernel K-means法を我々の動詞類語獲得に適用し,先行研究における同じデータで同時共起クラスタリングとの比較を行う.この結果からKernel K-meansでのグラフ-ベクトルの等価性には限界があり,本研究が利用する2部グラフの構造は直接反映できないこと,先行研究の同時共起クラスタリングの方が高い精度で類語を獲得できることを報告する. en-copyright= kn-copyright= en-aut-name=TakeuchiKoichi en-aut-sei=Takeuchi en-aut-mei=Koichi kn-aut-name=竹内孔一 kn-aut-sei=竹内 kn-aut-mei=孔一 aut-affil-num=1 ORCID= en-aut-name=TakahashiHideyuki en-aut-sei=Takahashi en-aut-mei=Hideyuki kn-aut-name=高橋秀幸 kn-aut-sei=高橋 kn-aut-mei=秀幸 aut-affil-num=2 ORCID= en-aut-name=KobayashiDaisuke en-aut-sei=Kobayashi en-aut-mei=Daisuke kn-aut-name=小林大介 kn-aut-sei=小林 kn-aut-mei=大介 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil= kn-affil=岡山大学工学部情報工学科 END start-ver=1.4 cd-journal=joma no-vol=47 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=Faculty of Engineering, Okayama University en-aut-sei=Faculty of Engineering, Okayama University en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=46 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=Faculty of Engineering, Okayama University en-aut-sei=Faculty of Engineering, Okayama University en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=51 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Regulatory Role for Complement Receptors (CD21/CD35) in the Recombination Activating Gene Expression in Mouse Peripheral B Cells en-subtitle= kn-subtitle= en-abstract= kn-abstract=A population of peripheral B cells have been shown to express recombination activating gene products, RAG-1 and RAG-2, which are considered to be involved in revising the B cell antigen receptor (BCR) in the periphery. BCR engagement has been reported to turn off RAG expression in peripheral B cells, whereas the same treatment has an opposite effect in immature B cells in the bone marrow. In contrast to receptor editing that is involved in the removal of autoreactivity in immature B cells, it has been shown that secondary V(D)J rearrangement in peripheral B cells, termed receptor revision, contributes to affinity maturation of antibodies. Here, we show that RAG-2 expression in murine splenic B cells was abrogated by the coligation of BCR with complement receptors (CD21/CD35) much more efficiently than by the engagement of BCR alone. On the other hand, the same coligation augmented proliferation of anti-CD40-stimulated B cells. Consistent with these observations, RAG-2 expression was lower in the draining lymph nodes of the quasi-monoclonal mice when they were immunized with a high-affinity antigen than with a low-affinity one. These findings suggest a crucial role for CD21/CD35 in directing the conservation or the revision of BCRs in peripheral B cells. en-copyright= kn-copyright= en-aut-name=HikidaMasaki en-aut-sei=Hikida en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MagariMasaki en-aut-sei=Magari en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NakayamaYasunori en-aut-sei=Nakayama en-aut-mei=Yasunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KanayamaNaoki en-aut-sei=Kanayama en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhmoriHitoshi en-aut-sei=Ohmori en-aut-mei=Hitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=5 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=91 end-page=96 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Generation of IgM and IgG1 monoclonal antibodies with identical variable regions: comparison of avidity en-subtitle= kn-subtitle= en-abstract= kn-abstract=Generally, IgM antibodies (Abs) produced in a primary immune response show lower affinity for an inducing antigen (Ag) compared with the corresponding IgG Abs that are major switched isotypes formed in the secondary response. An IgM molecule is a pentamer with 10 Ag-binding sites that will contribute to an increase of avidity for an Ag. To estimate the contribution of the pentameric structure to the avidity of an IgM Ab, we generated IgM and IgG1 monoclonal Abs (mAbs) with identical V regions that are specific for 4-hydroxy-3-nitrophenylacetyl (NP) by in vitro class switching of B cells followed by the cell fusion with a mouse myeloma cell line. Compared with an anti-NP IgG1 mAb, the corresponding IgM mAb showed much higher avidity for NP-conjugated bovine serum albumin, which was drastically reduced after being dissociated into monomers. en-copyright= kn-copyright= en-aut-name=KanayamaNaoki en-aut-sei=Kanayama en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamakoshiKimi en-aut-sei=Yamakoshi en-aut-mei=Kimi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KiyomiMasaaki en-aut-sei=Kiyomi en-aut-mei=Masaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MagariMasaki en-aut-sei=Magari en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhmoriHitoshi en-aut-sei=Ohmori en-aut-mei=Hitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=5 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=93 cd-vols= no-issue=1-2 suppl article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1981 dt-pub=19810228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Forecasts on date and degree of prevalence of Japanese Encephalitis (Epidemiological study on Japanese Encephalitis, 66) kn-title=日本脳炎の流行時期及び流行規模の予測について （日本脳炎の疫学的研究 66） en-subtitle= kn-subtitle= en-abstract= kn-abstract=In order to forecast the median date or the incidence rate in the prevalence of Japanese Encephalitis (JE) in Okayama Prefecture, the authors took the following factors into consideration: for deciding the median date, climatic elements, date showing immunological positivity of hemoagglutination inhibition reaction (called HI Reaction, in short) on 50 per cent number of swine and the latitude and longitude as geographical elements; and for deciding the incidence rate, the logarithm of Cule Tritaneorhychus (Ct) number and also climatic factors. They made up the multiple regression equation from the various elements in each year of 1966 to 1980 and estimated the degree of the prevalence of Japanese Entcephalitis by use of this, regression with the advancing selection method. The relation between the fact, only one patient of this disease in this Prefecture, Okayama was dIagnosed on the 10th. September, this year (1980) and the value estimated and forecased, are as followes. 1) There was not a large difference between the real date and the forecasted median date. 2) The authors forecasted and estimated the incidence rate very low and proved their forecasting to be very reliable by the fact. only one patient was dia~nosed. in the year, 1980. en-copyright= kn-copyright= en-aut-name=OgataMasana en-aut-sei=Ogata en-aut-mei=Masana kn-aut-name=緒方正名 kn-aut-sei=緒方 kn-aut-mei=正名 aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部公衆衛生学教室 affil-num=2 en-affil= kn-affil=岡山大学工学部生産機械工学科 END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=201101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=Faculty of Engineering, Okayama University kn-aut-sei=Faculty of Engineering, Okayama University kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue= article-no= start-page=5 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=1980 dt-pub=19800701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=廃液処理実務に携わる教職員の処遇問題と取組んで en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=岸本義久 kn-aut-sei=岸本 kn-aut-mei=義久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=3 cd-vols= no-issue= article-no= start-page=2 end-page=3 dt-received= dt-revised= dt-accepted= dt-pub-year=1981 dt-pub=19811001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=環境管理施設の現況 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakahashiTeruo en-aut-sei=Takahashi en-aut-mei=Teruo kn-aut-name=高橋照男 kn-aut-sei=高橋 kn-aut-mei=照男 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=4 cd-vols= no-issue= article-no= start-page=33 end-page=34 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19821101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=一研究室における無機性廃棄物の発生過程 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=SasaokaEiji en-aut-sei=Sasaoka en-aut-mei=Eiji kn-aut-name=笹岡英司 kn-aut-sei=笹岡 kn-aut-mei=英司 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=5 cd-vols= no-issue= article-no= start-page=2 end-page=3 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19831201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=津島地区排水対策の現況 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=NagoHiroshi en-aut-sei=Nago en-aut-mei=Hiroshi kn-aut-name=名合宏之 kn-aut-sei=名合 kn-aut-mei=宏之 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=6 cd-vols= no-issue= article-no= start-page=28 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=1984 dt-pub=19841101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=有機廃溶剤の有効利用について―蒸留回収装置の設置― en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=InabaMasami en-aut-sei=Inaba en-aut-mei=Masami kn-aut-name=稲葉雅美 kn-aut-sei=稲葉 kn-aut-mei=雅美 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue= article-no= start-page=11 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19851101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=環境管理施設設置からもう7年 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=FujitaKomei en-aut-sei=Fujita en-aut-mei=Komei kn-aut-name=藤田公明 kn-aut-sei=藤田 kn-aut-mei=公明 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue= article-no= start-page=8 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19851101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=「岡山大学特殊廃水処理施設」発足の頃 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakahashiKatsuaki en-aut-sei=Takahashi en-aut-mei=Katsuaki kn-aut-name=高橋克明 kn-aut-sei=高橋 kn-aut-mei=克明 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue= article-no= start-page=22 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=雑感 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=OhzukuTsutomu en-aut-sei=Ohzuku en-aut-mei=Tsutomu kn-aut-name=小槻勉 kn-aut-sei=小槻 kn-aut-mei=勉 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部合成化学科 END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue= article-no= start-page=9 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=環境管理センターを活用した環境科学教育について en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=MoriwakeToshio en-aut-sei=Moriwake en-aut-mei=Toshio kn-aut-name=森分俊夫 kn-aut-sei=森分 kn-aut-mei=俊夫 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=10 cd-vols= no-issue= article-no= start-page=19 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19881201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=生物系の教育に伴って発生する廃液・排永 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=OhmoriHitoshi en-aut-sei=Ohmori en-aut-mei=Hitoshi kn-aut-name=大森齊 kn-aut-sei=大森 kn-aut-mei=齊 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部生物応用工学科 END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue= article-no= start-page=15 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=199507 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=遺伝子ノックアウトマウス作製と免疫応答解析への利用 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakaiToshiyuki en-aut-sei=Takai en-aut-mei=Toshiyuki kn-aut-name=高井俊行 kn-aut-sei=高井 kn-aut-mei=俊行 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部生物応用工学科 END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue= article-no= start-page=4 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=1990 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=センター長退任の御挨拶 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakahashiTeruo en-aut-sei=Takahashi en-aut-mei=Teruo kn-aut-name=高橋照男 kn-aut-sei=高橋 kn-aut-mei=照男 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue= article-no= start-page=79 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=199112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=編集後記 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=尾坂明義 kn-aut-sei=尾坂 kn-aut-mei=明義 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部精密応用化学科 END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue= article-no= start-page=23 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=199112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=An Improvement Study of the Mercury Determination for Complexd Wastewater from University Laboratories kn-title=大学等複雑混合排廃水の水銀分析法の改善に関する技術検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TanakaMasakuni en-aut-sei=Tanaka en-aut-mei=Masakuni kn-aut-name=田中雅邦 kn-aut-sei=田中 kn-aut-mei=雅邦 aut-affil-num=1 ORCID= en-aut-name=IzawaMiyoko en-aut-sei=Izawa en-aut-mei=Miyoko kn-aut-name=伊沢美代子 kn-aut-sei=伊沢 kn-aut-mei=美代子 aut-affil-num=2 ORCID= en-aut-name=IkatsuHisayoshi en-aut-sei=Ikatsu en-aut-mei=Hisayoshi kn-aut-name=井勝久喜 kn-aut-sei=井勝 kn-aut-mei=久喜 aut-affil-num=3 ORCID= en-aut-name=KorenagaTakashi en-aut-sei=Korenaga en-aut-mei=Takashi kn-aut-name=伊永隆史 kn-aut-sei=伊永 kn-aut-mei=隆史 aut-affil-num=4 ORCID= en-aut-name=TakahashiTeruo en-aut-sei=Takahashi en-aut-mei=Teruo kn-aut-name=高橋照男 kn-aut-sei=高橋 kn-aut-mei=照男 aut-affil-num=5 ORCID= en-aut-name=ShinodaSumio en-aut-sei=Shinoda en-aut-mei=Sumio kn-aut-name=篠田純男 kn-aut-sei=篠田 kn-aut-mei=純男 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学環境管理センター affil-num=2 en-affil= kn-affil=岡山大学工学部 affil-num=3 en-affil= kn-affil=信州大学環境安全センター affil-num=4 en-affil= kn-affil=岡山大学環境管理センター affil-num=5 en-affil= kn-affil=岡山大学工学部 affil-num=6 en-affil= kn-affil=岡山大学薬学部 END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue= article-no= start-page=64 end-page=66 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921215 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=ズームアップ en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=香川晴美 kn-aut-sei=香川 kn-aut-mei=晴美 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue= article-no= start-page=14 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921215 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Catalysts for Desulfurization and Denitrification kn-title=脱硫・脱硝と触媒 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KasaokaShigeaki en-aut-sei=Kasaoka en-aut-mei=Shigeaki kn-aut-name=笠岡成光 kn-aut-sei=笠岡 kn-aut-mei=成光 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部 END start-ver=1.4 cd-journal=joma no-vol=15 cd-vols= no-issue= article-no= start-page=63 end-page=68 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931215 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=岡山大学環境管理センターと共に15年 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=KorenagaTakashi en-aut-sei=Korenaga en-aut-mei=Takashi kn-aut-name=伊永隆史 kn-aut-sei=伊永 kn-aut-mei=隆史 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部・精密応用化学科 END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue= article-no= start-page=5 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200108 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Engineering issues of Degradation of Waste Plastics into Fuel Oil for Recycling Society kn-title=循環型社会構築に向けての廃プラスチック油化リサイクル技術開発の課題 en-subtitle= kn-subtitle= en-abstract= kn-abstract=The rate of increase of plastic waste has been exceeded the rate of increase of plastic production during the period of 1975-1998. The development of technologies for resource reutilization of waste materials will not only be based on the waste-conversion-to-resource techniques but also the development of techniques for the effective collection, sizing, separation and sorting of the waste, and usage and transportation of the products from waste will be necessary. The treatment of waste materials must not be limited only to the scale-up of the treatment plants. Considering the population density and nature of locality, construction of small-scale plant for intermediate treatment will be essential. Even after repeated reutilization and resourceconversion of waste material the generation of ultimate refuse can not be avoided. Accepting this fact, formulation of a strategy for a progressive society with "Less Emission" will be necessary. For this purpose, arrangements of treatment facilities for the ultimate refuse will be essential. Among them, there is an urgent need for the development of technology for the treatment of halogen containing ultimate refuse. en-copyright= kn-copyright= en-aut-name=SakataYusaku en-aut-sei=Sakata en-aut-mei=Yusaku kn-aut-name=阪田祐作 kn-aut-sei=阪田 kn-aut-mei=祐作 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部物質応用化学科 en-keyword=Polymer waste kn-keyword=Polymer waste en-keyword=Plastics kn-keyword=Plastics en-keyword=Chlorine kn-keyword=Chlorine en-keyword=Bromine kn-keyword=Bromine en-keyword=Recycling society kn-keyword=Recycling society en-keyword=Catalytic dehalogenation kn-keyword=Catalytic dehalogenation END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue= article-no= start-page=2 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200308 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=微生物農薬による害虫の防除と環境保全 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=SakaiHiroshi en-aut-sei=Sakai en-aut-mei=Hiroshi kn-aut-name=酒井裕 kn-aut-sei=酒井 kn-aut-mei=裕 aut-affil-num=1 ORCID= en-aut-name=YamagiwaMasashi en-aut-sei=Yamagiwa en-aut-mei=Masashi kn-aut-name=山際雅詩 kn-aut-sei=山際 kn-aut-mei=雅詩 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学工学部生物機能工学科 affil-num=2 en-affil= kn-affil=岡山大学工学部生物機能工学科 END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=1 article-no= start-page=15 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19941130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Note on the Electronic Structure of C(60) Molecule en-subtitle= kn-subtitle= en-abstract= kn-abstract=A molecular orbital approach to the electronic structure of C(60) molecule is formulated on the basis of optimized bond orbital model and the stability of the truncated icosahedron structure is examined. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=1 ORCID= en-aut-name=MatsubaraTakeo en-aut-sei=Matsubara en-aut-mei=Takeo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ObuchiMasumi en-aut-sei=Obuchi en-aut-mei=Masumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science affil-num=3 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=1 article-no= start-page=7 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19941130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electronic States in Semiconductor Quantum Dot with Fluctuating Interfaces en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of interface fluctuations on the electronic states in semiconductor quantum dots are analyzed on the basis of numerical solutions for ground state wave functions and energy eigenvalues. It is shown that the effective volume of confinement becomes smaller than the real volume of quantum dots due to fluctuation. This effect comes from the fact that the wave functions with larger characteristic wavelength are not able to deform themselves following the fluctuation of interfaces exactly. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HiroyukiTachibana kn-aut-sei=Hiroyuki kn-aut-mei=Tachibana aut-affil-num=1 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=2 ORCID= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=奈良重俊 kn-aut-sei=奈良 kn-aut-mei=重俊 aut-affil-num=3 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=73 end-page=83 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effects of the Cultivation Method on the Characteristics or Gene Expression Profiles of Aspergillus oryzae Using mCD or DPY Media en-subtitle= kn-subtitle= en-abstract= kn-abstract=We used modified Czapek-Dox (mCD) or dextrin-peptone-yeast extract (DPY) media to cultivate a filamentous fungus, Aspergillus oryzae IAM 2706 by three different cultivation methods, i.e., shaking-flask culture (SFC), agar-plate culture (APC), and membrane-surface liquid culture (MSLC), to identify the differences in cultivation behaviors and gene transcriptional profiles. The fungi cultivated by APC or MSLC secreted a greater number of different proteins/enzymes in larger quantities compared with fungi cultivated by SFC, particularly when DPY medium was used. In particular, the amounts of protease secreted by fungi cultivated via MSLC or APC were much greater compared with SFC. When mCD medium was used, α-amylase activity was barely detectable in all cultures while the activity was detected in MSLC and APC in a quantity that was several times higher than that in SFC using DPY medium. SDS-PAGE analysis and N-terminal amino acid sequences confirmed 6 proteins in the culture supernatants when DPY medium was used. Among these proteins oryzin (an alkaline protease) and α-amylase were detected at much higher levels in APC and MSLC compared with SFC, which was consistent with the measured activity of the secreted enzymes. However, when mCD medium was used, only oryzin was detected in significant amounts in MSLC and APC. Microarray analyses of the fungi cultivated by SFC, APC or MSLC using either mCD or DPY media indicated that the gene transcriptional profile of the MSLC sample was similar to that of the APC sample but different from that of the SFC sample. When mCD medium was used, most of the genes that were up-regulated 10-folds or greater in the MSLC sample relative to the SFC sample were unknown or predicted proteins. Transcription of the oryzin gene was only slightly up-regulated in the MSLC sample while transcription of the α-amylase gene was slightly down-regulated. On the other hand, when DPY medium was used, many known genes including the oryzin gene were up-regulated in the MSLC sample versus the SFC sample. en-copyright= kn-copyright= en-aut-name=ImanakaHiroyuki en-aut-sei=Imanaka en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TanakaSoukichi en-aut-sei=Tanaka en-aut-mei=Soukichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FengBin en-aut-sei=Feng en-aut-mei=Bin kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ImamuraKoreyoshi en-aut-sei=Imamura en-aut-mei=Koreyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakanishiKazuhiro en-aut-sei=Nakanishi en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=5 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=69 end-page=72 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Ecient Squaring Algorithm for Xate Pairing with Freeman Curve en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recently, pairing–based cryptographies have attracted much attention. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field should be efficient. Especially for final exponentiation included in pairing calculation, squaring is more important than multiplication. This paper proposes an efficient squaring algorithm in extension field for Freeman curve. en-copyright= kn-copyright= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=60 end-page=68 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Ordinary Pairing Friendly Curve of Embedding Degree 3 Whose Order Has Two Large Prime Factors en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper proposes a method for generating a certain composite order ordinary pairing–friendly elliptic curve of embedding degree 3. In detail, the order has two large prime factors such as the modulus of RSA cryptography. The method is based on the property that the order of the target pairing–friendly curve is given by a polynomial as r(X) of degree 2 with respect to the integer variable X. When the bit size of the prime factors is about 500 bits, the proposed method averagely takes about 15 minutes on Core 2 Quad (2.66Hz) for generating one. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=50 end-page=59 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=High Accuracy Homography Computation without Iterations en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present highly accurate least-squares (LS) alternatives to the theoretically optimal maximum likelihood (ML) estimator for homographies between two images. Unlike ML, our estimators are non-iterative and yield solutions even in the presence of large noise. By rigorous error analysis, we derive a “hyperaccurate” estimator which is unbiased up to second order noise terms. Then, we introduce a computational simplification, which we call “Taubin approximation”, without incurring a loss in accuracy. We experimentally demonstrate that our estimators have accuracy surpassing the traditional LS estimator and comparable to the ML estimator. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=金谷健一 kn-aut-sei=金谷 kn-aut-mei=健一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NiitsumaHirotaka kn-aut-sei=Niitsuma kn-aut-mei=Hirotaka aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=RangrajanPrasanna kn-aut-sei=Rangrajan kn-aut-mei=Prasanna aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical Engineering Southern Methodist University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=42 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hyperaccurate Ellipse Fitting without Iterations en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper presents a new method for fitting an ellipse to a point sequence extracted from images. It is widely known that the best fit is obtained by maximum likelihood. However, it requires iterations, which may not converge in the presence of large noise. Our approach is algebraic distance minimization; no iterations are required. Exploiting the fact that the solution depends on the way the scale is normalized, we analyze the accuracy to high order error terms with the scale normalization weight unspecified and determine it so that the bias is zero up to the second order. We demonstrate by experiments that our method is superior to the Taubin method, also algebraic and known to be highly accurate. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=金谷健一 kn-aut-sei=金谷 kn-aut-mei=健一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=RangrajanPrasanna kn-aut-sei=Rangrajan kn-aut-mei=Prasanna aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical Engineering Southern Methodist University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=32 end-page=41 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Optimization without Search: Constraint Satisfaction by Orthogonal Projection with Applications to Multiview Triangulation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present an alternative approach to what we call the “standard optimization”, which minimizes a cost function by searching a parameter space. Instead, the input is “orthogonally projected” in the joint input space onto the manifold defined by the “consistency constraint”, which demands that any minimal subset of observations produce the same result. This approach avoids many difficulties encountered in the standard optimization. As typical examples, we apply it to line fitting and multiview triangulation. The latter produces a new algorithm far more efficient than existing methods. We also discuss optimality of our approach. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=金谷健一 kn-aut-sei=金谷 kn-aut-mei=健一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NiitsumaHirotaka kn-aut-sei=Niitsuma kn-aut-mei=Hirotaka aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SugayaYasuyuki kn-aut-sei=Sugaya kn-aut-mei=Yasuyuki aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=3 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=24 end-page=31 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Improved Multistage Learning for Multibody Motion Segmentation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present an improved version of the MSL method of Sugaya and Kanatani for multibody motion segmentation. We replace their initial segmentation based on heuristic clustering by an analytical computation based on GPCA, fitting two 2-D affine spaces in 3-D by the Taubin method. This initial segmentation alone can segment most of the motions in natural scenes fairly correctly, and the result is successively optimized by the EM algorithm in 3-D, 5-D, and 7-D. Using simulated and real videos, we demonstrate that our method outperforms the previous MSL and other existing methods. We also illustrate its mechanism by our visualization technique. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=金谷健一 kn-aut-sei=金谷 kn-aut-mei=健一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SugayaYasuyuki kn-aut-sei=Sugaya kn-aut-mei=Yasuyuki aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=13 end-page=23 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Unified Computation of Strict Maximum Likelihood for Geometric Fitting en-subtitle= kn-subtitle= en-abstract= kn-abstract=A new numerical scheme is presented for computing strict maximum likelihood (ML) of geometric fitting problems having an implicit constraint. Our approach is orthogonal projection of observations onto a parameterized surface defined by the constraint. Assuming a linearly separable nonlinear constraint, we show that a theoretically global solution can be obtained by iterative Sampson error minimization. Our approach is illustrated by ellipse fitting and fundamental matrix computation. Our method also encompasses optimal correction, computing, e.g., perpendiculars to an ellipse and triangulating stereo images. A detailed discussion is given to technical and practical issues about our approach. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=金谷健一 kn-aut-sei=金谷 kn-aut-mei=健一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SugayaYasuyuki kn-aut-sei=Sugaya kn-aut-mei=Yasuyuki aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=7 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Numerical Simulation of Acoustic Waves in a Two-Dimensional Phononic Crystal: Negative Refraction en-subtitle= kn-subtitle= en-abstract= kn-abstract=The lens effect of acoustic waves in a two-dimensional (2D) phononic crystal is studied by numerical simulation based on the finite-difference time-domain (FDTD) method. We calculate the phonon band structure of 2D phononic crystals, consisting of metal cylinders placed periodically in water. Lens effect is observed by the negative refraction of acoustic waves, which results in refocusing of the waves at the point outside the crystal. To increase the focal intensity, we introduce a 2D phononic crystal shield with a different composition of material, which returns the incident waves back to the lens via the perfect reflection. Also, the dependence on filling fraction of metal in the crystal is studied. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MaetaniNoriaki kn-aut-sei=Maetani kn-aut-mei=Noriaki aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KuroseTomoyuki kn-aut-sei=Kurose kn-aut-mei=Tomoyuki aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=FDTD Analysis on Optical Connement Structurewith Electromagnetic Metamaterial en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we investigate a light-confinement phenomenon in the structure which has triangular latice composed of Double NeGative Metamaterial (DNGM). In geometrical optics consideration, this structure is expected to confine lights completely by sequential refractions in the structure. We demonstrate it by using the two dimensional finite-difference time-domain simulations. We introduce Drude-Lorentz model for dielectric and magnetic dispersion of the material at optical frequencies. We analyze quantitatively the effects of energy loss in the DNGM on the light-confinement efficiency. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagaiShinji kn-aut-sei=Nagai kn-aut-mei=Shinji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UmedaRyosuke kn-aut-sei=Umeda kn-aut-mei=Ryosuke aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=111 end-page=119 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study of Facility Layout Method in Recycling Plant using AGV en-subtitle= kn-subtitle= en-abstract= kn-abstract=Our country faces a serious problem of the environmental pollution by the production and the large quantity consumption of the industry product. The thoroughness of resources recycling has become necessary to solve these problems. As for the product design and the production control, how productivity should be improved has been discussed with extreme emphasis. But from now, as for the product design, both assemblability and disassemblability must be taken into consideration at the same time. And also in production management, it must be investigated how the products can be recycled in the low cost. Therfore, the facility layout method with two phases in recycling plant, which is composed of both the procedure for the layout of facility group and the procedure for the layout of intermal facility group by the optimal solution method and the suboptimal solution method by neural network is proposed in this paper. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiharaYutaka kn-aut-sei=Fujihara kn-aut-mei=Yutaka aut-affil-num=1 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=2 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Matsue National College of Technology, Department of Control Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=105 end-page=110 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Analytical Method of Human Motion by Image Processing en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper deals with analytical method of human motion by image processing to make a model of the scooping process, Firstly, the scooping tool is the spoon, and while the scooping process is performing, the movement of the mouth center position and the spoon top position are measured by two cameras. As the amount of substance is over the uppermost area of the cup, the spoon is stuck obliquely into substance. Then the spoon is rotated and lifted up to the mouth. Secondly, we recognize the mouth center from the characteristic of the face image data and calculate the spoon top position to extract two points on the spoon handle from the time series images by two cameras. Finally, we describe the method of recognizing the coordinate of the mouth center and estimating the coordinate of the spoon top to analyse the scooping process. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TokunagaShuichi kn-aut-sei=Tokunaga kn-aut-mei=Shuichi aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Takuma National College of Technology affil-num=2 en-affil= kn-affil=Department of system engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=2 article-no= start-page=47 end-page=63 dt-received= dt-revised= dt-accepted= dt-pub-year=1987 dt-pub=19870305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Automatic Mesh Generator For 3-Dimensional Finite Element Analysis en-subtitle= kn-subtitle= en-abstract= kn-abstract=The aim of this paper is to propose new automatic mesh generator for the finite element analysis of threedimensional structures consisted of plates and beams. The strategy of the proposed one is as followings; Firstly, subdivide the structure into two-dimensional and one-dimensional structural components. Secondly, generate mesh pattern for each of them, and finally combine them so that they reconstruct the original configuration. By using the proposed method the modeling of, for example, steel bridge structures for Finite Element Analysis is easily and also fastly completed. Some examples of the application of the proposed method are presented, and from the examination of the results further important informations for the design of better method are also given in this paper. en-copyright= kn-copyright= en-aut-name=TaniguchiTakeo en-aut-sei=Taniguchi en-aut-mei=Takeo kn-aut-name=谷口健男 kn-aut-sei=谷口 kn-aut-mei=健男 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TsurumiYasuo kn-aut-sei=Tsurumi kn-aut-mei=Yasuo aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=91 end-page=96 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Intelligent Monitoring System Using Multiviewpoints for Teleperation en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose the method to determine the position of the 2 cameras for the multiviewpoints as the robot is the work place. The optical axit's direction of the 1st camera is determined in the base ot work contents in teleoperation. The multiviewpoints system uses the 2 camera units that aren't installed side by side, so that the direction of the 2nd camera is decided in the base of the angle between the optical axes' direction of 2 cameras. Next, the distance from the camera to the work place is determined according to the distance resolution of image on the monitor, and the camera type of which the point-blank range is not this distance is selected. And the efficacy ot this system is examined with an experiment. en-copyright= kn-copyright= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=85 end-page=89 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method of Shape Recognition Using CAD Data and Vertex-Dictionary en-subtitle= kn-subtitle= en-abstract= kn-abstract=We reason the circumstances around the three-dimensional vertex from the information about the intersection point in the two-dimensional image data inputted from a camera on the premise that we use this method as the eye ot the robot. In this method, we use the Vertex-Dictionary. We make the Vertex-Dictionary by calculation from CAD data of object figure (these data are already known) and the position data of the point of view. This dictionary includes the data of position and relations of connect surface etc. about a vertex. We get the data of three-dimensional vertex by comparison the data of two-dimensional intersection point in image data and Vertex-Dictionary. And we get the three-dimensional object by reasoning about the information of circumstances of all vertexes. Then we can recognize the three-dimensional object from image data. In this report, we explain the process to calculate the Vertex-Dictionary and some examples about this method. en-copyright= kn-copyright= en-aut-name=YamadaMitsuru en-aut-sei=Yamada en-aut-mei=Mitsuru kn-aut-name=山田充 kn-aut-sei=山田 kn-aut-mei=充 aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=79 end-page=84 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Apatite Formation on Electrochemically Treated Titanium en-subtitle= kn-subtitle= en-abstract= kn-abstract=A titanium oxide gel was electrochemically prepared on Ti with a cell consisting of Ti as the working electrode, Pt as the counter one, AgCl as the reference one, and an aqueous solution of 0.1 mol/L Ca(NO(3))(2) as the electrolyte solution. The Ti electrode was kept at 9.5V for 1 hr for oxidation and subsequently kept at-3.0V for 10 min (Ca9.5-3.0):calcium ions were expected to be adsorbed at the latter treatment. Other Ti specimen was kept at -3.0V for 10 min (Ca-3.0). Both specimens were found so bioactive as to deposit apatite in 12 hr (Ca9.5-3.0) and in 1 day (Ca-3.0) when soaked in a simulated body fluid (Kokubo solution). Calcium carbonate detected on the surface of Ca9.5-3.0 caused no harmful effects on spontaneous deposition of apatite in the fluid. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=尾坂明義 kn-aut-sei=尾坂 kn-aut-mei=明義 aut-affil-num=1 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=早川聡 kn-aut-sei=早川 kn-aut-mei=聡 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KoyanoKeiko kn-aut-sei=Koyano kn-aut-mei=Keiko aut-affil-num=3 ORCID= en-aut-name=TsuruKanji en-aut-sei=Tsuru en-aut-mei=Kanji kn-aut-name=都留寛治 kn-aut-sei=都留 kn-aut-mei=寛治 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Graduate School of Natural Science, Okayama University END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=71 end-page=77 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=O(N) Tight-Binding Algorithm for Large-Scale Molecular Dynamics Simulations en-subtitle= kn-subtitle= en-abstract= kn-abstract=A parallel tight-binding molecular dynamics with an order-N [O(N))] algorithm is implemented to perform large-scale simulation of nanostructured materials. The algorithm is based on the Fermi-operator expansion of an electronic energy and force, and we present its basic formalisms. Accuracy necessary for molecular-dynamics simulations can be obtained by a proper truncation in the expansion. Parallel efficiency on a parallel PC cluster shows nearly ideal scaling behavior with respect to the number of processors. Applicability of the method to a silicon-carbide system is examined. en-copyright= kn-copyright= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=1 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=61 end-page=69 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Multicomponent Plasmas in Penning-Malmberg Traps en-subtitle= kn-subtitle= en-abstract= kn-abstract=The behavior of multicomponent plasmas in the Penning-Malmberg traps is discussed with the parameters corresponding to experiments with antiprotons and cryogenic electrons. The relaxation times for the energy transfer antiprotons to electrons and between parallel and perpendicular components of electrons are estimated. It is shown that, depending on the values of parameters, both the former and the latter can be the bottleneck in the cooling process. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=1 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=51 end-page=59 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Density Functional Molecular Dynamics of Hydrogen Plasma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Density functional molecular dynamics method is applied to hydrogen plasma in the domain of liquid metallic hydrogen. Tentative results for the proton-proton pair distribution function and the electron-proton pair distribution function are obtained. It is shown that with the increase of the parameter γ(s), we have increasingly strong screening of proton charge by electrons and the decrease of electron density in the domain between protons. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=1 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=45 end-page=50 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement System of Biomechanical Properties for Portable Use en-subtitle= kn-subtitle= en-abstract= kn-abstract=It is difficult to evaluate a biomechanical properties quantitatively. The authors developed the measurement system of biomechanical properties formerly but it is on a large scale because of the use of personal computer. In this study, the portable measurement system of biomechanical impedance/mobility is developed. To establish a rapid measurement, a random vibration is adopted in input signal. The system consists of the measuring probe, amplifier, and a note-typed personal computer. The measurement probe is developed newly, and has an overall length of 9 ㎝ (without a handle) and a total weight of about 500 g. The measurement program is also developed and is available to any computer which is worked under MS DOS compatible in Windows 95/98 operating system. The biomechanical spectra of thigh, temple and forehead are obtained and they show three typical spectrum patterns. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamadaNobuya kn-aut-sei=Yamada kn-aut-mei=Nobuya aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=岡久雄 kn-aut-sei=岡 kn-aut-mei=久雄 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=39 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Acousticmyogram Measured with Electrosimulation During Muscle Fatigue en-subtitle= kn-subtitle= en-abstract= kn-abstract=The acousicmyogram (AMG) is a mechanical phenomenon recorded at the surface of an active muscle. It is used to monitor force production, fatigue, and contractile properties of muscle. In this study, the new electrode with accelerometer for electrostimulation and acoustic detection. It consists of Ag-AgCl active electrode and solid-gel annular groud, and a very light piezoresistive accelerometer. The recorded AMG waveform depends on the pulse amplitude and duration of stimulation current and its lag from the electroatimulation is about 7 ms. The strengh-duration (S-D) curve (the threshold current for stimulation vs. pulse duration) describes the excitability of muscle. The left forearm is electrostimulated by using the same electrode and the muscle vibration (AMG) is recorded with accelerometer. During the muscle fatigue, the S-D curve changes and the current threshold increases under the same pulse duration. The rheobase of S-D curve increases gradually but the chronaxie hardly changes during muscle fatigue. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YanagiMakoto kn-aut-sei=Yanagi kn-aut-mei=Makoto aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=岡久雄 kn-aut-sei=岡 kn-aut-mei=久雄 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=25 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Numerical Study on the Performance of an Open-type Flat-plate Solar Collector en-subtitle= kn-subtitle= en-abstract= kn-abstract=A set mathematical models was developed for predicting the performance of an open-type flat-plate solar collector, and solved numerically through an implicit difference method. The effects of various parameters on the absorption of solar energy for the collector were investigated. The results showed that the solar energy absorptance of the open-type flat-plate collector was relatively high especially for the region where the weather was humid and hot, and there were an optimum length and an optimum tilt angle for the absorbing plate on which the collector could obtain the highest solar energy absorptance. It was found that the latent heat flux of water evaporation could be 5 to 15 times larger than the sensible heat flux. The effects of the magnitude of the solar incident flux, the atmospheric humidity, the atmospheric temperature, the absorbing plate tilt angle, and water film thickness on the temperature rising of the water film were clarified in numerical quantities. The increase of the solar incident flux, the atmospheric humidity or the atmospheric temperature also resulted in a rise in the energy absorptance of the collector. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SongBaoyin kn-aut-sei=Song kn-aut-mei=Baoyin aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=稲葉英男 kn-aut-sei=稲葉 kn-aut-mei=英男 aut-affil-num=2 ORCID= en-aut-name=HoribeAkihiko en-aut-sei=Horibe en-aut-mei=Akihiko kn-aut-name=堀部明彦 kn-aut-sei=堀部 kn-aut-mei=明彦 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=19 end-page=24 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Small Type Hydrocyclone with a Perforated Inner Cylinder en-subtitle= kn-subtitle= en-abstract= kn-abstract=A new type of hydrocyclone with a perforated inner cylinder is tested experimentally to study its performance for liquid-solid separation. The size of the cyclone is small so that it may be effective for small particle separation. Two types of the inner cylinder were made : the one has 39.5% void fraction of the perforated surface and the other has 73.5% . The mean particle diameter is 4.5 μ m. It is found that the pressure loss of the cyclone with the inner cylinder is reduced by about 25% compared with that of the ordinary type. The new type cyclone has better separation efficiency. en-copyright= kn-copyright= en-aut-name=YamamotoKyoji en-aut-sei=Yamamoto en-aut-mei=Kyoji kn-aut-name=山本恭二 kn-aut-sei=山本 kn-aut-mei=恭二 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=JiaoXuecheng kn-aut-sei=Jiao kn-aut-mei=Xuecheng aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=JiaoXuezhen kn-aut-sei=Jiao kn-aut-mei=Xuezhen aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=3 en-affil= kn-affil=lnstitute of Harbin Architectural and Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=9 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Rarefied Gas Flow Over a Solid Surface with Adsorbates en-subtitle= kn-subtitle= en-abstract= kn-abstract=The molecular dynamics study is applied for interaction of the gas molecule with the solid wall to analyse the flow of a rarefied gas between two wall. The wall consisting of Pt molecules is considered to be in a state of physical adsorbates. Two problems are considered : one is the flow problem and the other is the temperature problem. It is found that the tangential momentum accommodation coefficient is about 0.8 when the relative speed ratio of the two walls is unity, while it decreases with increasing Knudsen number when the relative wall speed ratio is 5.0. It shown that the temperature accommodation coefficient is about 0.85 at 300K wall, 0.75 at 450K wall, and 0.69 at 600K wall. en-copyright= kn-copyright= en-aut-name=YamamotoKyoji en-aut-sei=Yamamoto en-aut-mei=Kyoji kn-aut-name=山本恭二 kn-aut-sei=山本 kn-aut-mei=恭二 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=1 end-page=8 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Simulation of Deformation of Ni Twinned Nanocrystal Model by Molecular Dynamics en-subtitle= kn-subtitle= en-abstract= kn-abstract=Molecular dynamics simulation of nickel crystal under uniaxial tensile and compressive deformation was performed for single nenocrystal model and twinned nanocrystal model composed of 1550 atoms using EAM (embedded atom method) potential with the object of investigating deformation induced phase tranformation (especially twin deformation). In the case of single nanocrystal model, the evolution and development of twin deformation, (111)[11(2)], is observed under compressive loading in [001] direction, whereas either slip or twin deformation is not recognized under tensile loading. In the case of twinned nanocrystal model, twin, (111)[11(2)], decreases and disappears under tensile loading, and develops under compressive loading, It is suggested from the difference of results between single nanocrystal model and twinned nanocrystal model that it is easy for twin to induce local deformation. en-copyright= kn-copyright= en-aut-name=OmuraYasuhiro en-aut-sei=Omura en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=飛田守孝 kn-aut-sei=飛田 kn-aut-mei=守孝 aut-affil-num=2 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=榊原精 kn-aut-sei=榊原 kn-aut-mei=精 aut-affil-num=3 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=竹元嘉利 kn-aut-sei=竹元 kn-aut-mei=嘉利 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=43 end-page=54 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Numerical Analysis of a Model for Isolated Hydrogen Bond en-subtitle= kn-subtitle= en-abstract= kn-abstract=Large isotope effects have been observed in various kinds of hydrogen bonded ferro / antiferroelectrics. In clariflying their origin, themodynamic properties of the hydrogen bond are of essential importance. Two numerical methods are applied to analyze the model for isolated hydrogen bond at finite temperatures and the results of excited energy levels of proton or deuteron are examined. It is found that the second excited state is not far enough from the first excited state to be neglected discussing themodynamic properties of hydrogen especially in their ordered states. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MatsubaraTakeo kn-aut-sei=Matsubara kn-aut-mei=Takeo aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Institute for Condensed Matter Theory END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=23 end-page=41 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Structure of Yukawa (Dusty Plasma) Mixtures en-subtitle= kn-subtitle= en-abstract= kn-abstract=Parameters characterizing the structure ot confined Yukawa system are estimated for 'dusty plasmas', clouds of charged macroscopic particles formed near the boundary between plasma and the sheath and leviated by negatively biased electrode. When we have dust particles with different ratios of charge to mass, they form a two-dimensional Yukawa mixture or separate two-dimensional one-companent Yukawa systems, depending on the charge density in the sheath and number density of dust particles. In order to provide a basis for numerical simulations on Yukawa mixtures including Coulombic case, we summarize mathematical expressions necessary for molecular dynamics. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=1 ORCID= en-aut-name=KishimotoTokunari en-aut-sei=Kishimoto en-aut-mei=Tokunari kn-aut-name=岸本篤也 kn-aut-sei=岸本 kn-aut-mei=篤也 aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=15 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Internal Structure and Viscoelasticity Estimation by a Mechanical Impedance - In case of a vibrating disk - en-subtitle= kn-subtitle= en-abstract= kn-abstract=In a stiffness estimation of living body, an internal structure under the skin influences the measured results. Because a different stiffness of body caused by bones and muscles is obtained. In this paper, by using a measurement system of mechanical impedance, the relations between a viscoelasticity and a distance from the surface of silicone-gel model is calculated. This relation is applied to silicone-gel tumor model and a shape and a viscoelasticity of semi-sphere silicone-gel tumous are estimated. The obtained results are expressed as a reconstructed 3-D image of shape / viscoelasticity. The revised curve-fitting of mechanical impedance and the cancellation of peripheral vibration influence are proposed in order to increase an estimation acccuracy. en-copyright= kn-copyright= en-aut-name=MoriMasahiro en-aut-sei=Mori en-aut-mei=Masahiro kn-aut-name=森政弘 kn-aut-sei=森 kn-aut-mei=政弘 aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=岡久雄 kn-aut-sei=岡 kn-aut-mei=久雄 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=7 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Comparative Considerations of Eliminating Method for Power Line Interference in Electrocardiography en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper describes a new measurment method and principle of power line interference elimination in ECG signal using inverse loop and AC power line configuration (APC). First, we considered that magnetic induction effect not only depend on a conductive loop area that formed by shielded wires that connect the object and amplifier but also effect of body area effective must be considered. It is simple and useful because interference can be eliminated to very small value show that the condition and it can be applied in a real ECG signal recording. Second, results show that the contribution of displacement currents into the object especially APC in vertical configuration is smaller than it in other one. Because this method is so easy that it is convenient to be used to understand some aspects of power line interference elimination phenomenon. Hence we expect that this method can be used as one of improvement method in measurement system of ECG signal recording. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=Adli kn-aut-sei=Adli kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamamotoYoshitake en-aut-sei=Yamamoto en-aut-mei=Yoshitake kn-aut-name=山本尚武 kn-aut-sei=山本 kn-aut-mei=尚武 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department ot Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Study on Electrical Discharge Machining Characteristics of Coated Electrodes en-subtitle= kn-subtitle= en-abstract= kn-abstract=Low electrode wear EDM is attained by the adhesion of heat resolved carbon made from kerosine type machining fluid to the electrode end surface. This phenomenon, however, occurs only under long pulse duration. Therefore, the low electrode wear EDM under finishing condition is impossible so far. In the previous paper, the authors developed a turbostratic carbon electrode whose structure is very similar to the heat resolved carbon generated in EDM process and made it clear that the low electrode wear EDM was possible by using the electrode even under finishing condition. In this study, a carbon coated electrode and a SiC coated one which can be made rapidly at low cost were developed and their EDM characteristics were investigated. Experimental analysis pointed it out that both electrodes were effective in reducing electrode wear under finishing condition. en-copyright= kn-copyright= en-aut-name=GuoChangning en-aut-sei=Guo en-aut-mei=Changning kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkadaAkira en-aut-sei=Okada en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakagiTakashi en-aut-sei=Takagi en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department ot Mechanical Engineering affil-num=3 en-affil= kn-affil=Department ot Mechanical Engineering affil-num=4 en-affil= kn-affil=Ibiden Co., Ltd. END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=1 article-no= start-page=11 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19961227 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Synthesis and Characterization of Poly[(benzo[1,2-d:5,4-d']bisthiazole-2,6-diyl)-1,4-phenylene] en-subtitle= kn-subtitle= en-abstract= kn-abstract=Poly[(benzo[1,2-d:5,4-d']bissthiazole-2,6-diyl)-1,4-phenylene](cis-PBZT)with a relatively high molecular weight was prepared by a new synthesis route. Properties of the synthesized polymer, such as thermostability, liquid crystallinity etc. were investigated and compared with those of trans-PBZT. cis-PBZT was crystallized from dilute solution and the electron microscopy showed that the precipitate was a rod-like crystal similar to that of trans form. In spite of rigid nature of the back bone, cis-PBZT showed poor crystallinity. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ZhangChunxiao kn-aut-sei=Zhang kn-aut-mei=Chunxiao aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanigawaSatoshi kn-aut-sei=Tanigawa kn-aut-mei=Satoshi aut-affil-num=2 ORCID= en-aut-name=UchidaTetsuya en-aut-sei=Uchida en-aut-mei=Tetsuya kn-aut-name=内田哲也 kn-aut-sei=内田 kn-aut-mei=哲也 aut-affil-num=3 ORCID= en-aut-name=ShimamuraKaoru en-aut-sei=Shimamura en-aut-mei=Kaoru kn-aut-name=島村薫 kn-aut-sei=島村 kn-aut-mei=薫 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemistry affil-num=2 en-affil= kn-affil=Department of Applied Chemistry affil-num=3 en-affil= kn-affil=Department of Applied Chemistry affil-num=4 en-affil= kn-affil=Department of Applied Chemistry END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=1 article-no= start-page=5 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19961227 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Solution-Grown Crystals of Poly(p-phenylene benzobisthiazole) en-subtitle= kn-subtitle= en-abstract= kn-abstract=Rigid polymer poly(p-phenylene benzobisthiazole) was crystallized from dilute solution. Electron microscopy showed that upon quenching, flat fibrils with several nm thick were produced. Subsequent heat treatment in solvent changed the fibril into "shish-kebab". On the other hand, by isothermal crystallization, an aggregate of parallel rod-like crystals was obtained. The molecular chains were accommodated normal to the rod. Based on the observation of crystal morphology, the isothermal crystallization mechanism was proposed. Because of regidity of polymer chains and wide distribution of the molecular length, the chain ends were inevitably included within the crystals resulting in crystal defects such as axial shift, lattice curvature and edge dislocation which were directly observed by lattice imaging. en-copyright= kn-copyright= en-aut-name=ShimamuraKaoru en-aut-sei=Shimamura en-aut-mei=Kaoru kn-aut-name=島村薫 kn-aut-sei=島村 kn-aut-mei=薫 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ZhangChunxiao kn-aut-sei=Zhang kn-aut-mei=Chunxiao aut-affil-num=2 ORCID= en-aut-name=UchidaTetsuya en-aut-sei=Uchida en-aut-mei=Tetsuya kn-aut-name=内田哲也 kn-aut-sei=内田 kn-aut-mei=哲也 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemistry affil-num=2 en-affil= kn-affil=Department of Applied Chemistry affil-num=3 en-affil= kn-affil=Department of Applied Chemistry END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=1 article-no= start-page=1 end-page=3 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19961227 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Precipitation Hardening and Effect of Surface Layer on the Fatigue Strength of an Al-1.2mass% Si Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=Dependence of precipitation hardening on the distance from specimen surface and effect of the surface layer on the fatigue strength of an Al-1.2mass% Si alloy were studied by microhardness test, transmission electron microscopy and repeated tension fatigue test. Rate of age-hardening was slower in the vicinity of surface than in the interior of the specimen aged at 423K after quenching from 853K. The result of the electron microscopy was that the size ot Si precipitates formed in the vicinity of surface was smaller than in the interior of specimen aged for 6ks at 423K. This difference was considered to be caused by the effect of the surface as vacancy sinks which slowed down the growh of Si precipitates in the vicinity of the specimen surface. A specimen surface layer whose hardness was different from that of the specimen interior was formed at the vicinity of the surface when the specimen was aged at relatively low temperature such as 423K. The fatigue strength in repeated tensile test ot the specimen did not depend on whether the specimen surface layer was present or not. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=榊原精 kn-aut-sei=榊原 kn-aut-mei=精 aut-affil-num=1 ORCID= en-aut-name=NakagawaKeiyu en-aut-sei=Nakagawa en-aut-mei=Keiyu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HosokawaNorio en-aut-sei=Hosokawa en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical engineering affil-num=2 en-affil= kn-affil=Okayama University of Science affil-num=3 en-affil= kn-affil=Okayama University of Science affil-num=4 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=59 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Facility Layout Linked with Scheduling Problem by Genetic Algorithm and Tabu Search en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose a method to solve simultaneously facility layout problem and scheduling problem. About a initial random layout planning, the production scheduling and the transportation scheduling of AGV are obtained by using priority rules. From the obtained transportation scheduling, the critical transportation and the closeness rating are obtained. Facility layout is renewed by the combined procedure of genetic algorithm and tabu search in order to reduce the material handling cost. By using this renewed facility layout, the production scheduling and the transportation scheduling of AGV are also revised until no further improvement is possible. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiharaYutaka kn-aut-sei=Fujihara kn-aut-mei=Yutaka aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Matsue National College of Technology, Department of Control Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=53 end-page=57 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Designing an Automatic Monitoring System for Unmanned Rooms en-subtitle= kn-subtitle= en-abstract= kn-abstract=A method for designing a monitoring system with multiple cameras is proposed in order to supervise and recognize the progress of wide work area. First, a wide view camera is deveeloped by combining several usual cameras so that its visual angle could cover more than π/2. Secondly, A method for determining the number and location points of cameras is proposed by considering the shape of monitored area and the installation cost of cameras. The monitored area is divided into three kinds of basic shape (rectangular form, L form and convex form). For every basic shape area, the camera is located at the vertex pasition, so that the whole area can be monitored by the camera. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=LiSen kn-aut-sei=Li kn-aut-mei=Sen aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= en-aut-name=MunesawaYosiomi en-aut-sei=Munesawa en-aut-mei=Yosiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=47 end-page=52 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The Recognition Methods Combined Image Processing With 2D or 3D CAD Information (CAD/IP) en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose the recognition methods by image processing using 2D or 3D CAD. In the case of 2D CAD, an object is recognized by comparing five characters calculated from the center of gravity and contour. In the case of 3D CAD, there are two recognition methods. Firstly 3D CAD figure is transformed into 2D CAD figures. And an object is recognized by comparing 2D CAD figures with inputted images. Secondly the three dimensional coordinates of vertexes on an object are calculated from the images taken from some cameras and compared 3D coordinates with those of 3D CAD figures and recognized the sort of an object. en-copyright= kn-copyright= en-aut-name=JindaiMitsuru en-aut-sei=Jindai en-aut-mei=Mitsuru kn-aut-name=神代充 kn-aut-sei=神代 kn-aut-mei=充 aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= en-aut-name=MunesawaYosiomi en-aut-sei=Munesawa en-aut-mei=Yosiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=39 end-page=45 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Recognition Index of Part and Unit by Discrimination Characteristics en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose a recognition index to evaluate the complexity of discrimination among parts and units. The parts and units are classified into some groups (the number of groups is shown as n) by one characteristic, such as color, shape, size and so on. The recognition index of each is denoted as log(2) (n+1) by the information quantity formula. The recognition diagram shows the classfication of parts and units into only one part and unit by the structure of a characteristic. Further we propose the line balancing method for assembly line based on the working time and recognition index. en-copyright= kn-copyright= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=31 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study on Robot System to Hand Surgical Intrument to a Surgeon in a Surgery (1st Report, Development of Surgical Instrument Recognition System) en-subtitle= kn-subtitle= en-abstract= kn-abstract=The nurse supporting robot system to prepare and hand surgical instruments to a surgeon is proposed to reduce work of nurse in a surgical operation. In this paper, the surgical instrument recognition system (SIRS) is developed to hand the surgical instruments to a surgeon by the robot. The characteristics ot the instruments are area of the instruments, ratio of minimum center-contour distance to maximum one and its outline contour, are recognized by using the image processing. Kinds of the instruments are distinguished by these characteristics. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IwamotoHidehisa kn-aut-sei=Iwamoto kn-aut-mei=Hidehisa aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=宗澤良臣 kn-aut-sei=宗澤 kn-aut-mei=良臣 aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HashimotoAtsufumi kn-aut-sei=Hashimoto kn-aut-mei=Atsufumi aut-affil-num=5 ORCID= en-aut-name=SekiShuji en-aut-sei=Seki en-aut-mei=Shuji kn-aut-name=関州二 kn-aut-sei=関 kn-aut-mei=州二 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Kure National College of Technology affil-num=2 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=3 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=4 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=5 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=6 en-affil= kn-affil=Dept. of Medicine, Okayama University END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=19 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of saturated solubilities and diffusion coefficients of pure gases to mineral oil en-subtitle= kn-subtitle= en-abstract= kn-abstract=The present paper deals with measurements of the diffusion coefficients as well as the saturated solubilities of single component gases such as N(2), O(2) and CO(2) to a mineral oil. The method to determine the diffusivity is based upon measuring the pressure changes caused by the one-dimensional diffusion between the gas and the oil enclosed in an airtight container. For N(2) and O(2) the profiles of the measured pressure changes agree well with those predicted by diffusion theory, whereas that is not the case with CO(2). Although the reason why CO(2) does not seem to obey diffusion theory has yet to be studied, it may suggest the possibility that the diffusion coefficient varies with the pressure, considering that the range of pressure change in the diffusivity measurement was much obtained by this method fell within ±30% around the average. Moreover the solubility measurements have made clear that Henry's law holds true between the three pure gases and the oils tested, and that O(2) and CO(2) dissolve into the oil approximately two and ten times more, respectively, than N(2). en-copyright= kn-copyright= en-aut-name=WashioSeiichi en-aut-sei=Washio en-aut-mei=Seiichi kn-aut-name=鷲尾誠一 kn-aut-sei=鷲尾 kn-aut-mei=誠一 aut-affil-num=1 ORCID= en-aut-name=TakahashiSatoshi en-aut-sei=Takahashi en-aut-mei=Satoshi kn-aut-name=高橋智 kn-aut-sei=高橋 kn-aut-mei=智 aut-affil-num=2 ORCID= en-aut-name=ImotoChikashi en-aut-sei=Imoto en-aut-mei=Chikashi kn-aut-name=井元智可至 kn-aut-sei=井元 kn-aut-mei=智可至 aut-affil-num=3 ORCID= en-aut-name=YoshidaAtsumasa en-aut-sei=Yoshida en-aut-mei=Atsumasa kn-aut-name=吉田篤正 kn-aut-sei=吉田 kn-aut-mei=篤正 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Machanical Engineering affil-num=2 en-affil= kn-affil=Department of Machanical Engineering affil-num=3 en-affil= kn-affil=Kayaba Industry Co., Ltd. affil-num=4 en-affil= kn-affil=Department of Machanical Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=5 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Rigid-Plastic Deformation of Inhomogeneous Material with Elliptic Inclusions Sliding along Boundary en-subtitle= kn-subtitle= en-abstract= kn-abstract=The influence of the slip between the inclusion and the matrix during the plastic deformation of inhomogeneous material with elliptic inclusions is investigated. The material is assumed to be rigid-plastic. The boundary slip region is modeled by assuming lower yield stress for the thin boundary region than those of the inclusion and the matrix. The rigid-plastic finite element method is used for the numerical calculation under the plane strain condition. The effects of the aspect ratio of the inclusion, the yield stress of the boundary region, and the volume fraction of the inclusion on the deformation mode are studied. The patterns of the strain concentration and the averaged flow stress of the inhomogeneous material are also discussed. The results may be helpful for understanding creep or superplastic deformation of metals with inclusions. en-copyright= kn-copyright= en-aut-name=AbeTakeji en-aut-sei=Abe en-aut-mei=Takeji kn-aut-name=阿部武治 kn-aut-sei=阿部 kn-aut-mei=武治 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NamikoshiRyuji kn-aut-sei=Namikoshi kn-aut-mei=Ryuji aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagayamaNoriyuki kn-aut-sei=Nagayama kn-aut-mei=Noriyuki aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakanoYasuju kn-aut-sei=Takano kn-aut-mei=Yasuju aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering and Cooperative Research Center, Okayama University affil-num=2 en-affil= kn-affil=Shikoku Instrumentation Co., Ltd. affil-num=3 en-affil= kn-affil=Industrial Technology Center of Okayama Prefecture affil-num=4 en-affil= kn-affil=Kobe Steel, Ltd. en-keyword=Plasticity kn-keyword=Plasticity en-keyword=Composite Material kn-keyword=Composite Material en-keyword=Sliding Inclusions kn-keyword=Sliding Inclusions en-keyword=Rigid-Plastic Deformation kn-keyword=Rigid-Plastic Deformation en-keyword=Finite Element Method kn-keyword=Finite Element Method END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=1 end-page=4 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Solute Clusters on Low Temperature Aging in Dilute Al-Ag Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=Aging of diolute Al-Ag alloys after quenching from low temperatures were studied mainly by electrical resistometry. Maximum resistivity observed in the aging curve of specimens quenched from high temeperature disappeared when the quenching temperature was lowered to 473 or 453K. When the quenching temperature was lowered further to 423K or lower, however, maximum resistivity reappeared. At the temperature lower than or equal to 423K but higher than the GP zone solvus, the alloys were not homogeneous but had clusters of solute atoms or fluctuation of solute concentration. Inhomogeneous distribution of solute atoms may affect the aging behavior after quenching from that temperature. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=榊原精 kn-aut-sei=榊原 kn-aut-mei=精 aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Eengineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering, Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=67 end-page=72 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Price Determination Method Based on Price Elasticity en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose the price determination method using the parameter of the price elasticity that shows the relation between price and demand. Firstly, the state of the price elasticity is examined under the condition that the relation between price and demand are assumed by the inverse proportional function, the linear function and the quadratic function. Secondly, the profit is estimated for each product by break even point analysis. And the price is determined under the condition that the relation between the demand and price is shown by one of three　demand-pridce functions above mentioned. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=LiZhenzi kn-aut-sei=Li kn-aut-mei=Zhenzi aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=梶原康博 kn-aut-sei=梶原 kn-aut-mei=康博 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=The Graduate School of Natural Science and Technology END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=61 end-page=65 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method of Shape Recognition Using Geometry Information en-subtitle= kn-subtitle= en-abstract= kn-abstract=At present, the two dimensional CAD systems which are used to make drawings go around widely. But in order to use design data at the lower stream of production process, the replacement from the two dimensional CAD systems to the three dimensional CAD systems have started. Accordingly it is dimensional drawings for the three dimensional shapes. And it is also necessary to store them in the three dimensional CAD systems. And in the studying of the machine vision which is often used as "Eyes of robot" , it is being studied the method to recognize the three dimensional objects from the two dimensional image. This is the problem about data exchange, too. Therefore in this report, we propose the method to exchange the plural two dimensional elements of figure from image relations between elements were found from reference of the element coordinates. Next, the three dimensional shapes were reasoned from reference of the knowledge (for corner, etc) prepared beforehand. Then that data were exchanged to the three dimensional CAD data. We report one example about this method. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamadaMitsuru kn-aut-sei=Yamada kn-aut-mei=Mitsuru aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Industrial Technology Center of Okayama Prefecture affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=53 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Plant Layout Method Considering Material Handling Cost and Maintainability en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper presents a method using simulated annealing(SA) and genetic algorithm(GA) to solve the plant layout problem in which the layout is evaluated by material handling cost and maintainability. In the former study about facility layout problem, it was either the minimization of the objeective function consisting of transport cost or the maximization of the objective function consisting of closeness rating. In this paper, both transport cost and maintainability were included in the objective function to be minimized. The plant layout problem, this paper proposes the heuristic procedures to obtain a suboptimal layout solution by combining SA with GA. From the simulation by computer, it concluded that the method which SA is combined with GA is more efficient than the method which utilizes SA and GA independently. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiharaYutaka kn-aut-sei=Fujihara kn-aut-mei=Yutaka aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Matsue National College of Technology, Department of Control Engineering affil-num=2 en-affil= kn-affil=Department of System Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=45 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bioactive Calcium Borosilicate Glasses for Enameling Titanium en-subtitle= kn-subtitle= en-abstract= kn-abstract=The thermal expansion coefficient of some bioactive glasses in the system CaO-SiO(2)-B(2)O(3) were adjusted to be similar to that of titanium by controlling the composition. A glass of composition 45CaO･30SiO(2)･25B(2)O(3) was selected among those as the enameling glass. A slurry was prepared by mixing the glass powder and ethanal to be developed on titanium and heated at 740℃ for 30 min. Thus treated specimen was soaked in a simulated body fluid (Kokubo solutiion). FT-IR reflection and thin film X-ray diffraction analyses indicated apatite formation on the glass coating layer within 12 h of soaking in the fluid. Thus titanium could be provided with bioactivity due to the enameling. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=尾坂明義 kn-aut-sei=尾坂 kn-aut-mei=明義 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KobayashiKeizo kn-aut-sei=Kobayashi kn-aut-mei=Keizo aut-affil-num=2 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=早川聡 kn-aut-sei=早川 kn-aut-mei=聡 aut-affil-num=3 ORCID= en-aut-name=OhtsukiChikara en-aut-sei=Ohtsuki en-aut-mei=Chikara kn-aut-name=大槻主税 kn-aut-sei=大槻 kn-aut-mei=主税 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioengineering Science affil-num=2 en-affil= kn-affil=Department of Bioengineering Science affil-num=3 en-affil= kn-affil=Department of Bioengineering Science affil-num=4 en-affil= kn-affil=Department of Bioengineering Science END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=39 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bioactivity of Nb(V) and Ta(V)-Doped Calcium Silicate Glasses en-subtitle= kn-subtitle= en-abstract= kn-abstract=Nb(2)O(5)-and Ta(2)O(5)-doped calcium si1icate glasses were soaked for various periods in a simulated body fluid(Kokubo solution) up to 30 days. Apatite formation ability of the surface of these glasses were investigated with thin-film X-ray diffraction and FT-IR reflection spectroscopy. The effects of these additive oxides on the bioactivity of CaO･SiO(2) based glass were discussed. A small amount of Nb(2)O(5) and Ta(2)O(5) suppressed the rate of silica hydrogel layer formation and the apatite formation on the surface of the glasses. The rate of the apatite nucleation on the surface of Nb(2)O(5)-doped calcium silicate glass was slower than that on the surface of Ta(2)O(5)-doped calcium silicate glass. It was concluded that the decrease in the apatite forming ability of calcium silicate glasses by these additive oxides is attributed to the suppression of formation of silica hydrogel layer which plays an important role in apatite nucleation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ImayoshiNaoki kn-aut-sei=Imayoshi kn-aut-mei=Naoki aut-affil-num=1 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=早川聡 kn-aut-sei=早川 kn-aut-mei=聡 aut-affil-num=2 ORCID= en-aut-name=OhtsukiChikara en-aut-sei=Ohtsuki en-aut-mei=Chikara kn-aut-name=大槻主税 kn-aut-sei=大槻 kn-aut-mei=主税 aut-affil-num=3 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=尾坂明義 kn-aut-sei=尾坂 kn-aut-mei=明義 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=29 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Loosening of Knee Joint Prosthesis en-subtitle= kn-subtitle= en-abstract= kn-abstract=Knee replacement arthroplasty is indicated for the patient with advanced knee pain, knee deformation, and knee functional disorder. The aim of this study was to estimate loosening after a knee replacement arthroplasty. Loosening is measured by a frequency response function, and mobility by random vibration. The modal parameters for the knee joint are obtained by applying a modal analysis to the frequency response function. The values decrease as the knee joint prosthesis loosened. These parameters serve as an index for the condition between a thighbone and the prosthesis. The various indexes will greatly clarify the stage of advance in the loosening of knee-joint prostheses. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=岡久雄 kn-aut-sei=岡 kn-aut-mei=久雄 aut-affil-num=1 ORCID= en-aut-name=OhshimaMasakazu en-aut-sei=Ohshima en-aut-mei=Masakazu kn-aut-name=大島正和 kn-aut-sei=大島 kn-aut-mei=正和 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=21 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Internal Viscoelasticity by Mechanical Impedance en-subtitle= kn-subtitle= en-abstract= kn-abstract=In evaluating the stiffness of skin surface, internal structures such as bone and muscle often affect the measurements. In the present paper, acoustic random vibration is used to estimated the viscoelasticity of a silicone-gel model. This viscoelasticity, which includes two different stiffness strata, is first estimated using a mechanical impedance spectrum, which describes the relation between the depth and viscoelasticity of internal objects. This method is applied to the depth of a silicone-gel tumor model measured by ultrasound imaging and the viscoelasticity of internal gel can be accurately estimated. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=岡久雄 kn-aut-sei=岡 kn-aut-mei=久雄 aut-affil-num=1 ORCID= en-aut-name=NakamuraTakahiko en-aut-sei=Nakamura en-aut-mei=Takahiko kn-aut-name=中村貴彦 kn-aut-sei=中村 kn-aut-mei=貴彦 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=11 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Internal Structure and Phase Transformation of Ti-V Alloy Fine Particles en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fine particles of Ti-V alloy were prepared by means of arc method and were investigated on internal structure and phase transformation using HR-TEM and EDS. Martensite phase was observed in a particle containing comparatively low concentration of V, and ω phase was also found to exist in a nearly 15% V particle. The structure of the ω phase in the fine particle is remarkably expanded in comparison with the bulk sample, and the ω phase is unstable, so that it has disappeared in a few seconds during TEM observation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IshiiKouta kn-aut-sei=Ishii kn-aut-mei=Kouta aut-affil-num=1 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=竹元嘉利 kn-aut-sei=竹元 kn-aut-mei=嘉利 aut-affil-num=2 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=飛田守孝 kn-aut-sei=飛田 kn-aut-mei=守孝 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=1 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Microstructure of Oxide Layers Formed on Magnesium Surface at Elevated Temperature en-subtitle= kn-subtitle= en-abstract= kn-abstract=The microstructure of oxidizing magnesium at elevated temperatures has been studied using HR-TEM, SEM and EDS. Two kinds of thin magnesium specimen for TEM observation were prepared. One was oxidized after preparing TEM foil of magnesium, the other was prepared from an oxidized bulk magnesium for observing the cross-section of oxide/Mg interfacial region. In the former, several oxides(MgO) morphologies were observed depending on the temperature and time of the oxidization. The growth of needle-like oxides formed at 573K and mottled oxides formed at 773K were recognized as a remarkable phenomenon belonging to the local oxidization. These oxides were composed of poly-crystal. The thin uniform oxidization layer was also observed in all conditions. In the cross-sectional observation, the local oxide layer, nearly 300nm in thickness, on the matrix(Mg) were observed. The thin uniform oxidized layer of bulk samples was identified as a kind of modified layer (~40nm in thickness) in which the formation of HR-TEM lattice fringes were prevented by the strain due to the slight oxidization. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ArisawaHideaki kn-aut-sei=Arisawa kn-aut-mei=Hideaki aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SongZhi-Yi kn-aut-sei=Song kn-aut-mei=Zhi-Yi aut-affil-num=2 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=竹元嘉利 kn-aut-sei=竹元 kn-aut-mei=嘉利 aut-affil-num=3 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=飛田守孝 kn-aut-sei=飛田 kn-aut-mei=守孝 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=1 article-no= start-page=23 end-page=34 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19941130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Study on Water Quality of Surface Runoff and Groundwater Runoff on the Basis of Separation by a Numerical Filter en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this study we investigated the water quality of surface runoff and groundwater runoff from the basins of the Yodo River and the Asahi River based on that separated by a numerical filter. The water quality of the surface runoff is greatly different from the groundwater runoff. The tendency of concentration change in accordance with river discharges is different from each other. The water qtiality of groundwater runoff changes with river discharges clockwise in many cases. The differences of COD and SS originating from those of population and industrial activities in each basin are found in the lower SS concentrations of the surface runoff and the COD cencentrations of the groundwater runoff. The nutrients and chlorine ion were investigated, too. en-copyright= kn-copyright= en-aut-name=KawaraOsami en-aut-sei=Kawara en-aut-mei=Osami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FukumotoKohji kn-aut-sei=Fukumoto kn-aut-mei=Kohji aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Environmental and Civil Engineering, Faculty of Environmental Science and Technology affil-num=2 en-affil= kn-affil=Tottori Prefectural Office END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=1 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19941130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Scribing of Ceramie Circuit Board with Q-Switched Nd：YAG Laser en-subtitle= kn-subtitle= en-abstract= kn-abstract=Scribing of copper coated alumina ceramic board with Q-switched YAG laser used for the maskless direct patterning of circuit　board is experimentally investigated, which leads to efficient production of trial circuit board. Better dividing of alumina circuit board 655μm in thickness can be attained by the scribing of about 100μm depth. Higher repetition frequency of laser irradiation leads to smaller notch angle and lower breaking load. en-copyright= kn-copyright= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KubotaShin-ichiro en-aut-sei=Kubota en-aut-mei=Shin-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YokomizoSeiichi en-aut-sei=Yokomizo en-aut-mei=Seiichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OgataKojiro en-aut-sei=Ogata en-aut-mei=Kojiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TadaNobuhiko en-aut-sei=Tada en-aut-mei=Nobuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Industrial Technology Center of Okayama Prefecture affil-num=3 en-affil= kn-affil=Industrial Technology Center of Okayama Prefecture affil-num=4 en-affil= kn-affil=Hitachi Construction Machinery Co., Ltd affil-num=5 en-affil= kn-affil=Hitachi Construction Machinery Co., Ltd END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=113 end-page=116 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cost Evaluation of The Improvement of Twisted Ate Pairing That Uses Integer Variable X of Small Hamming Weight en-subtitle= kn-subtitle= en-abstract= kn-abstract=Barreto–Naehrig (BN) curve has been introduced as an efficient pairing-friendly elliptic curve over prime field F(p) whose embedding degree is 12. The characteristic and Frobenius trace are given as polynomials of integer variable X. The authors proposed an improvement of Miller's algorithm of twisted Ate pairing with BN curve by applying X of small hamming weight in ITC–CSCC2008; however, its cost evaluation has not been explicitly shown. This paper shows the detail of the cost evaluation. en-copyright= kn-copyright= en-aut-name=SakemiYumi en-aut-sei=Sakemi en-aut-mei=Yumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=Katohidehiro en-aut-sei=Kato en-aut-mei=hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshikawa en-aut-sei=Morikawa en-aut-mei=Yoshikawa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=108 end-page=112 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Extension Field for Xate Pairing with Freeman Curve en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recently, pairing-based cryptographies such as ID-based cryptography and group signature have been studied. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field must be efficiently carried out. The authors show efficient arithmetic operations of extension field for Xate pairing especially with Freeman curve. en-copyright= kn-copyright= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=99 end-page=107 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A High-Speed Square Root Algorithm for Extension fields -Especially for Fast Extension Fields- en-subtitle= kn-subtitle= en-abstract= kn-abstract=A square root (SQRT) algorithm in extension field F(p(m))(m = r(0)r(1)･･･r(n−1)･2(d), r(i) : odd prime, d : positive integer) is proposed in this paper. First, a conventional SQRT algorithm, the Tonelli-Shanks algorithm, is modified to compute the inverse SQRT in F(p(2d)), where most of the computations are performed in the corresponding subfields F(p(2i)) for 0 ≤ i ≤ d-1. Then the Frobenius mappings with addition chain are adopted for the proposed SQRT algorithm, in which a lot of computations in a given extension field F(p(m)) are also reduced to those in a proper subfield by the norm computations. Those reductions of the field degree increase efficiency in the SQRT implementation. The Tonelli-Shanks algorithm and the proposed algorithm in F(p(6)) and F(p(10)) were implemented on a Core2 (2.66 GHz) using the C++ programming language. The computer simulations showed that, on average, the proposed algorithm accelerated the SQRT computation by 6 times in F(p(6)), and by 10 times in F(p(10)), compared to the Tonelli-Shanks algorithm. en-copyright= kn-copyright= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=93 end-page=98 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Predictor Order and Error Distribution of MMAE Predictors for Lossless Image Coding en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper investigates the relation between error distribution and predictive order of minimum mean abusolute error predictors (MMAE predictors) designed for lossless coding of grayscale images. Design of MMAE predictors reduces to the linear programming problem. Let k be the number of coefficients in a predictor (predictor order), we imagine that predictor order k may have a distribution shaping effect. Main purpose of this paper is to ensure that k has such an effect. en-copyright= kn-copyright= en-aut-name=UenoHirokazu en-aut-sei=Ueno en-aut-mei=Hirokazu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=75 end-page=92 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Human Support Agent for Design and Diagnosis using Classifier System en-subtitle= kn-subtitle= en-abstract= kn-abstract=As is well known, an advanced knowledge and know-how are needed in the design and the diagnosis work. Further, human experts can cope with the recent trend of customers needs. Therefore, the design and the diagnosis work have been privately performed in the past, and its information cannot be shared. In addition, the number of experts is decreasing. It is a very important problem to maintain and to extend experts technologies having been built up. For the purpose, methods and systems for technical inheritance of the advanced techniques of the skilled engineers are needed to train the unskilled operators and also can assist skilled operators. In this research, attention is focused on the design of analog filter circuit. To attain the target, the circuit structural classifier system to support design work is developed. Furthermore, simulation technology for hot strip rolling mills based on distributed agents is presented aimed to develop tools for the diagnosis of hot strip rolling mills operation. en-copyright= kn-copyright= en-aut-name=OheKeita en-aut-sei=Ohe en-aut-mei=Keita kn-aut-name=大江啓太 kn-aut-sei=大江 kn-aut-mei=啓太 aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=今井純 kn-aut-sei=今井 kn-aut-mei=純 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=61 end-page=74 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Human Interface Technology for Operation Support of LargeSized Crane en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this research, a Human Interface system is designed intended to mobile crane. The intervention of human is unavoidable to attain the high performance of electro mechanical system. As is known, crane operation is complicated. Recently, the decrease of expert person induced crane accident. So in near future, it is required a partial automation of crane operation and human support technology. We are aiming at the development of the operation support system for a crane. In this research, development of the hydro mechanical models representing both of static and dynamics movements are made. Further, actual experimental data of operating mobile crane, which are electrical signal data and three-dimension (3D) position of moving load is measured. The actual operating data are compared with the model and it is found that the developed electromechanical model can explain the behaviors of actual data. en-copyright= kn-copyright= en-aut-name=KawamuraMao en-aut-sei=Kawamura en-aut-mei=Mao kn-aut-name=川村真央 kn-aut-sei=川村 kn-aut-mei=真央 aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=2 ORCID= en-aut-name=YamagataKatuki en-aut-sei=Yamagata en-aut-mei=Katuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ShimomuraKoichi en-aut-sei=Shimomura en-aut-mei=Koichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Division of Industrial Innovation Science The Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Kobelco Cranes co., Ltd affil-num=4 en-affil= kn-affil=Kobelco Cranes co., Ltd END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=55 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Surface Defect Inspection of a Cutting Tool by Image Processing with Neural Networks en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this research, an image processing method and a system for inspection support of a rod figured cutting tool are developed. As is well known, the visual inspection of a cutting tool by image processing is not easy, because cutting blade have a helical blade structure. To cope with the problem, an experimental facility with rotation and longitudinal tool shift functions to enable acquisition of blade surface pictures along a cutting rod is developed. The type of the defect treated in this paper is the spot of coating on blade surface. To judge the quality of the processed image of blade surface, neural network with autonomous learning is used. The processed image of cutting tool is divided into 64 × 64 blocks used for the input to the neural networks. Before input, each block data is preprocessed applying a edge detection filter and a transformation by the discrete fourier transform (DFT). Using these technologies, the experimental inspection system is built and tested to check the capabilities of the inspection algorithms. The diagnostic performance of the surface defect of a cutting tool was confirmed. There remained a problem to mis judge the normal tools as the defect. en-copyright= kn-copyright= en-aut-name=InoueShinichiro en-aut-sei=Inoue en-aut-mei=Shinichiro kn-aut-name=井上真一郎 kn-aut-sei=井上 kn-aut-mei=真一郎 aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=今井純 kn-aut-sei=今井 kn-aut-mei=純 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=49 end-page=54 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Position Control of 2-Link SCARA Robot by using InternalModel Control en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, the controlled target is the SCARA robot with two links, and the object is fine control of the arm head position of the robot. To attain the object, Internal Model Control (IMC) is introduced. A nonlinear equations are for robot dynamics formulated by solving Lagrange equation, and is linearized to design control system by IMC. The controller of IMC is designed or synthesisted as the inverse system of the linearized model, and IMC filter model is selected. Also, reference filter is introduced to make the improvement of performance. The result of control performance by IMC is compared with that of PID numerically, accuracy and incoherency are confirmed. en-copyright= kn-copyright= en-aut-name=AkamatsuShinya en-aut-sei=Akamatsu en-aut-mei=Shinya kn-aut-name=赤松慎也 kn-aut-sei=赤松 kn-aut-mei=慎也 aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=今井純 kn-aut-sei=今井 kn-aut-mei=純 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=39 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Positioning Control of One Link Arm with ParametricUncertainty using Quantitative Feedback Theory en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper presents method of the controller design for one link arm with parametric uncertainty. Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor and cost saving or improvement of the productivity. Such robots need to have positioning performance of high precision. In condition that there is an uncertainty in plant dynamics, desired control performance may not be attained because the controller is designed according to the mathematical model of a plant. So it is important that the designed control system have a robust control performance. In this paper, the robust controller is designed using Quantitative Feedback Theory (QFT) for one link arm with parametric uncertainty. Simulation experiments are run for control system designed by using QFT and conventional method. The results are compared with each other and it is found that the control system designed by QFT shows a robust performance and can suppress the unevenness of output against parametric uncertainty. en-copyright= kn-copyright= en-aut-name=KuwashimaTakayuki en-aut-sei=Kuwashima en-aut-mei=Takayuki kn-aut-name=桑嶋崇行 kn-aut-sei=桑嶋 kn-aut-mei=崇行 aut-affil-num=1 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=今井純 kn-aut-sei=今井 kn-aut-mei=純 aut-affil-num=2 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=32 end-page=38 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Tracking Control of Combination Vehicles with PreviewFeedforward Compensation en-subtitle= kn-subtitle= en-abstract= kn-abstract=A tractor-trailer vehicle in the factory might move on the route determined beforehand. However, automation of a tractor-trailer vehicle is difficult so that it is necessary to consider the nonlinearity of a vehicle and a trailer. In this research, the effective tracking control method of a tractor-trailer vehicle is proposed. The control method using time-state control form for a preview control is presented, and be applied a tractor-trailer vehicle with nonholonomic characteristics. Results of numerical experiments are presented to check effectiveness of the proposed control method. en-copyright= kn-copyright= en-aut-name=MabuchiShuji en-aut-sei=Mabuchi en-aut-mei=Shuji kn-aut-name=馬渕周治 kn-aut-sei=馬渕 kn-aut-mei=周治 aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=小西正躬 kn-aut-sei=小西 kn-aut-mei=正躬 aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=今井純 kn-aut-sei=今井 kn-aut-mei=純 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=27 end-page=31 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental Conditions for Observation of ThermodynamicInstability and Critical Point of Fine Particle (Dusty) Plasmas en-subtitle= kn-subtitle= en-abstract= kn-abstract=When the Coulomb coupling between fine particles becomes sufficiently strong in fine particle plasmas, the isothermal compressibility of the whole system diverges and we have a phase separation and an associated critical point. Experimental conditions of fine particle plasmas, densities and temperatures of components and the fine particle size, are obtained corresponding to characteristic parameters around the critical point and the dependency on ion species and other factors is discussed. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=22 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Information Transfer and Entanglement Creation by Spin Chains: Effects of Noise and Asymmetry en-subtitle= kn-subtitle= en-abstract= kn-abstract=For the transfer of quantum information and the creation of entangled states, the application of tuned spin chains, systems of spins with the nearest-neighbor coupling tuned so as to give high efficiency, has been proposed and some examples of high performance have been given by several authors. In this article, the effect of deviations from tuned values and the effect of resultant asymmetry are investigated through numerical simulations and theoretical analyses. It is shown that there exists a system where the transfer efficiency is comparable with exactly tuned ones and, at the same time, robust to noises in the coupling constants. It is also shown that the effect of asymmetry on the efficiency of entanglement creation is of the second order when the asymmetry is small. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ChaiHong kn-aut-sei=Chai kn-aut-mei=Hong aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=16 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=FDTD Simulations of Acoustic Waves in Two-DimensionalPhononic Crystals using Parallel Computer en-subtitle= kn-subtitle= en-abstract= kn-abstract=The finite-difference time-domain (FDTD) method has been applied to the calculation of the phonon band structure of two-dimensional (2D) phononic crystals, consisting of metal cylinders placed periodically in liquid. By comparing several combinations of materials for metal cylinder and liquid, we analyze the dependence of the band structures on sound speed and density of liquid media. Moreover, the negative refraction of the acoustic waves is observed at the interfaces between phononic crystal slab and the liquid. We find that an acoustic“lens effect”with the slab appears due to the negative refractions. The relationship between the focal intensity in the lens effect and the band structure is discussed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KuroseTomoyuki kn-aut-sei=Kurose kn-aut-mei=Tomoyuki aut-affil-num=1 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=8 end-page=15 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dispersion Models and Electromagnetic FDTD Analyses ofNanostructured Metamaterials using Parallel Computer en-subtitle= kn-subtitle= en-abstract= kn-abstract=Metamaterial which has negative permittivity and permeability is investigated via computer simulations. Effects of the nanostructure on dielectric and magnetic properties of the material are taken into account by introducing the Drude-Lorentz model in the materials dispersion. We include multi-band process in the dielectric response in order to reproduce accurately experimental values of bulk Au thin film. Size effect on the dispersion is examined by comparing the model with that of a noble metal particle. Based on the dispersion model constructed, we analyze the electromagnetic response of nanostructured metamaterials to evanescent waves at microwave and optical frequencies via finite-difference time-domain simulatioins on parallel computer. A re- focusing and an amplification of the evanescent waves propagating through a metamaterial, consisting of metal slab/vacuum stacking, is demonstrated for the frequencies of 30GHz and 744THz. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UmedaRyosuke kn-aut-sei=Umeda kn-aut-mei=Ryosuke aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=東辻千枝子 kn-aut-sei=東辻 kn-aut-mei=千枝子 aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=鶴田健二 kn-aut-sei=鶴田 kn-aut-mei=健二 aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=東辻浩夫 kn-aut-sei=東辻 kn-aut-mei=浩夫 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Crystal rotation behavior with fatigue crack propagation in copper films en-subtitle= kn-subtitle= en-abstract= kn-abstract=Using a fatigue testing method by which fatigue cracks can be initiated and propagated in a film adhered to cover an elliptical through-hole in a base plate subjected to push-pull cyclic loads, annealed copper films with the thickness of 100μm and those reduced the thickness from the 100μm to 50μm by an electro-polishing were fatigued under a constant stress amplitude with a stress ratio of zero. The crystal rotation behavior with the fatigue crack propagation was investigated by measuring the crystal orientation around the fatigue crack initiated from the notch root before and after fatigue testing, using EBSD (Electron Back-scatter Diffraction) method. Then, the change of crystal orientation with fatigue testing was evaluated quantitatively from the misorientation between the crystal orientation matrix on the same point obtained before and after fatigue testing. As a result, the angle of the crystal rotation obtained from the region showing the high fatigue crack propagation rate was larger than that obtained from the region showing the low fatigue crack propagation rate for the film with the thickness of 100μm, while the fatigue crack propagated faster in the film with the thickness of 50μm than that with the thickness of 100μm regardless of the small crystal rotation angles with the fatigue testing for the film with the thickness of 50μm. en-copyright= kn-copyright= en-aut-name=ShimizuKenichi en-aut-sei=Shimizu en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ToriiTashiyuki en-aut-sei=Torii en-aut-mei=Tashiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=IshidaKoki en-aut-sei=Ishida en-aut-mei=Koki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Uchiyama Manufacturing Corp. END start-ver=1.4 cd-journal=joma no-vol=90 cd-vols= no-issue=11-12 article-no= start-page=1521 end-page=1531 dt-received= dt-revised= dt-accepted= dt-pub-year=1978 dt-pub=19781230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The tendency of the outbreak of whooping cough-patients by analysis of time series (Study on surveillance of infectious disease 1) kn-title=時系列分析を用いた百日咳患者発生の傾向（感染症のサーベイランスに関する研究 第1報） en-subtitle= kn-subtitle= en-abstract= kn-abstract=Since the cessation of vaccination for whooping cough in Okayama Prefecture in 1973, the tendency of the outbreak of whooping cough-patients is being watched with keen interest in the field of public health. From the outbreak of patients in four monitering hospitals in Okayama Prefecture, the authors conducted analysis of the tendency of the outbreak of whooping cough-patients by analysis of time series. The results may be summarized as follows; 1. The tendency of the outbreak of whooping cough-patients by month analyzed by average monthly indicator in 1976 and 1977. 1) The outbreak of patients in O-Hospital located in the southeastern part of Okayama Prefecture increased gradually from January and reached a smaller peak in April and reached a larger peak from July to September and decreased later. In comparing the outbreak of patients in each of other hospitals with that in O-Hospital, the distinctive features could be recognized as follows. In K-Hospital located in the southwestern part of Okayama Prefecture, a larger peak was observed in April and May, and a moderate peak was observed from August to October. In Y-Hospital located in the northwestern part, no peak was recognized in April, and a larger peak was recognized in November as well as from July to September. In T-Hospital located in the northeastern part, a moderate peak was recognized in December. 2) From January to June, the tendency of the outbreak of patients in southern part was earlier than that in northern part. From July to October, monthly indicators in both northern and southern parts were high. In November and December, monthly indicator in southern part dicreased below 1.0, but that in northern part did not dicrease below 1.0. Data indicate that differences in the tendency of the outbreak of patients by month between northern and southern parts of Okayama Prefecture were recognized. 2. The tendency of the outbreak of whooping cough-patients by year analyzed by average monthly number of patients in 1976 and 1977 and average monthly estimated number of patients in 1978. 1) The number of patients in each of four hospitals was greater in 1977 than in 1976. 2) Statistically, it is forecarsted that the number of patients in O-Hospital would decrease more remarkably, and that in K-Hospital and Y-Hospital would increase gradually, and that in T-Hospital would increase more remarkably in 1978 than in 1977. Data indicate that differences in the tendency of the outbreak of patients by year among four districts were recogniized. 3. The estimated number of patients in 1978. The estimated number of patients in O-Hospital is calculated as 52.9, and that in K-Hospital is calculated as 312.6, and that in Y-Hospital is calculated as 91.1. and that in T-Hospital is calculated as 336.3. 4. Discussion in the field of public health. 1) The authors discussed in respect to the tendency of the outbreak of whooping cough-patients in all of Okayama Prefecture and methods to grasp it. 2) Data of the tendency of the outbreak of whooping cough-patients by analysis of time series will be an important factor for taking countermeasures in the field of public health. 3) It is necessary for the party concerned to conduct surveillance and take countermeasures for whooping cough in each district. 4) It is necessary for the party concerned to analyze epidemiological factors as well as to conduct surveillance of the outbreak of whooping cough-patients. en-copyright= kn-copyright= en-aut-name=JitsunariFumihiko en-aut-sei=Jitsunari en-aut-mei=Fumihiko kn-aut-name=実成文彦 kn-aut-sei=実成 kn-aut-mei=文彦 aut-affil-num=1 ORCID= en-aut-name=OhsakiHirokazu en-aut-sei=Ohsaki en-aut-mei=Hirokazu kn-aut-name=大崎紘一 kn-aut-sei=大崎 kn-aut-mei=紘一 aut-affil-num=2 ORCID= en-aut-name=OgataMasana en-aut-sei=Ogata en-aut-mei=Masana kn-aut-name=緒方正名 kn-aut-sei=緒方 kn-aut-mei=正名 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部公衆衛生学教室 affil-num=2 en-affil= kn-affil=岡山大学工学部生産機械工学科 affil-num=3 en-affil= kn-affil=岡山大学医学部公衆衛生学教室 END start-ver=1.4 cd-journal=joma no-vol=10 cd-vols= no-issue=1 article-no= start-page=61 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=1975 dt-pub=19750701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=ERRATUM en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=School of Engineering, Okayama University kn-aut-sei=School of Engineering, Okayama University kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=2 article-no= start-page=31 end-page=45 dt-received= dt-revised= dt-accepted= dt-pub-year=1987 dt-pub=19870305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Some Remarks on Finite Element Mesh Modeling of Crack-Tip Area en-subtitle= kn-subtitle= en-abstract= kn-abstract=The aim of this paper is to present some remarks on the arrangement of finte element mesh modeling of the area adjacent to the crack-tip which locates in two-dimensional area. Since the stress distribution near crack-tip is singular, the arrangement of mesh pattern and the selection of mesh type in the crack area govern the accuracy of the solution. This paper gives some informations on the arrangement of finite elements in the area which are obtained through numerous number of numerical experiments. And the effectivity of Zooming Technique for stress analysis is clarified through the experiments. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SanadaKenji kn-aut-sei=Sanada kn-aut-mei=Kenji aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MatsumotoHajime kn-aut-sei=Matsumoto kn-aut-mei=Hajime aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MoriwakiKiyoaki kn-aut-sei=Moriwaki kn-aut-mei=Kiyoaki aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering affil-num=4 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=2 article-no= start-page=21 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1987 dt-pub=19870305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Car Ownership in Households en-subtitle= kn-subtitle= en-abstract= kn-abstract=Car ownership in households is analyzed by disaggregate behavioral modeling technique. Two models are built to analyze characteristic features of car ownership. The results are (1) The number of driver licenses in a household is, as a matter of course, most influencing on car ownership and multi-ownership. (2) Family size is the second most influencing. (3) Utilily obtainable by owning second or third car is higher in the household of primary industry than that of the other industry. (4) Inclination of household to be car owner is stronger in a sparsely inhabited zone than in a densely inhabited. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KishinoKeiichi kn-aut-sei=Kishino kn-aut-mei=Keiichi aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=2 article-no= start-page=9 end-page=19 dt-received= dt-revised= dt-accepted= dt-pub-year=1987 dt-pub=19870305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Influence of Sewage Treatment System on Water Quality in Kojima Lake en-subtitle= kn-subtitle= en-abstract= kn-abstract=This study dealt with the characteristics of hydrodynamics of Kojima Lake and the influence of a regional sewage treatment system in construction on the lake. Clockwise and anticlockwise circulations are caused by seasonal winds in summer and winter, respectively. The distribution of a conservative material continuously discharged off the shore of the sewage treatment plant is scarcely affected by seasonal winds and river discharges. The sewage treatment system improves the water quality of the lake except T-N. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KawaraOsami kn-aut-sei=Kawara kn-aut-mei=Osami aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NasuKiyotaka kn-aut-sei=Nasu kn-aut-mei=Kiyotaka aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Tokyo Construction Consultants co.,Ltd. END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=2 article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1987 dt-pub=19870305 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Depth Dependency of Hardness Change of Ti-Mo Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=We investigated the effects of resolved interstitial oxygen or nitrogen atoms and of quenched-in strain on the hardening of the single crystals grown from molten Ti-14 and 20wt pct Mo alloys. The aging treatment at 623K in atmosphere much more increased in the hardness of specimen surface than that in argon atmosphere. The quenched-in compressive stress enhanced age hardening due to omega formation. We surveyed in detail the hardness changes toward the center of plate-shaped single crystal. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakemotoYoshito kn-aut-sei=Takemoto kn-aut-mei=Yoshito aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HidaMoritaka kn-aut-sei=Hida kn-aut-mei=Moritaka aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Science affil-num=2 en-affil= kn-affil=Department of Industrial Science END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=81 end-page=91 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dynamic Behavior of Sand Bed around Structure under Wave Motion en-subtitle= kn-subtitle= en-abstract= kn-abstract=Under the attack of storm waves, there are many destructions of coastal structures due to scouring, sinking and sliding. These types of destructions are considered to be in close relation to the dynamic behavior of sand bed around the structures. In this study the characteristics of pore water pressure and stresses in the sand bed around a breakwater under the attack of superposed waves are treated theoretically. The results show that during the crest or the trough being in front of the structure the strength of sand bed around the structure decreases notably and the unstable zone will occur. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagoHiroshi kn-aut-sei=Nago kn-aut-mei=Hiroshi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MaenoShiro kn-aut-sei=Maeno kn-aut-mei=Shiro aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=71 end-page=79 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of Coefficients of Groundwater Flow in Multilayered Aquifers en-subtitle= kn-subtitle= en-abstract= kn-abstract=It is difficult to determine the coefficients of groundwater flow from the data which were obtained from the drawdown test in a multiaquifer system. In this paper, new methods of analyzing drawdown-tests are developed and illustrated with the example to determine aquifer coefficients. In a double-layered aquifer, the analytical solution of drawdown test, in which water is discharged from both layers, is derived. And also the theoretical solution to determine the coefficient of storage by using an index of elasticity of a confined aquifer is derived. From these solutions, methods of determining the coefficient of transmissibility in a double-layered aquifer and the coefficinent of storage in a confined aquifer are got. The example analysis to determine aquifer coefficients is shown. As a result, the characteristics which were obtained by these methods are verified by the real drawdown test data. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakeshitaYuji kn-aut-sei=Takeshita kn-aut-mei=Yuji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishigakiMakoto kn-aut-sei=Nishigaki kn-aut-mei=Makoto aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KohnoIichiro kn-aut-sei=Kohno kn-aut-mei=Iichiro aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=2 article-no= start-page=31 end-page=46 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation Method of the Optimum Relaxation Factor for the Successive Overrelaxation Method en-subtitle= kn-subtitle= en-abstract= kn-abstract=New estimation method of the optimum relaxation factor for the successive overrelaxation method (SOR) is proposed, and the efficiency of the new method is surveyed through a number of numerical experiments. This method can a priori determine the value of the factor by using only the topological properties of the problem, and it is valid for a sparse set of linear equations obtained by using the five-point difference scheme for any rectangular area with arbitrary boundary conditions. The experiments clarify that the method can estimate good approximate value of the factor. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IkutaShusaku kn-aut-sei=Ikuta kn-aut-mei=Shusaku aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=57 end-page=70 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Prediction of Shrinkage and Creep of Concrete en-subtitle= kn-subtitle= en-abstract= kn-abstract=New prediction equations of shrinkage and creep of concrete are proposed, and the efficiency of the new equations are investigated through a number of experimental data. Furthermore,the characteristics and applications of the prediction equations presented in the codes of many countries are also discussed. The results showing that the new equations could estimate shrinkage and creep of concrete within a certain measure of accuracy were obtained. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SakataKenji kn-aut-sei=Sakata kn-aut-mei=Kenji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KohnoIichiro kn-aut-sei=Kohno kn-aut-mei=Iichiro aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=45 end-page=55 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Charge Density Fluctuation in Ionic Mixtures en-subtitle= kn-subtitle= en-abstract= kn-abstract=The total charge fluctuation spectrum of ionic mixtures is analyzed on the basis of the solution of the hypernetted-chain equation for the binary ionic mixtures. A simple but sufficiently accurate scaling law in the domain of intermediate coupling is obtained and the result is applied to the calculation of the bremsstrahlung emission and absorption rates in high density plasmas composed of ions of many species. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TotsujiHiroo kn-aut-sei=Totsuji kn-aut-mei=Hiroo aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=31 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Surface Properties of Classical One-Component Plasma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Surface properties of classical one-component plasma are investigated by numerical experiments on the system with periodicity in two directions perpendicular to the planar surface. The density profile, the electrostatic potential, the electric field, and the surface energy are obtained for intermediate values of the coupling parameter of bulk part r and compared with earlier experiments on spherical system. For r=10, the surface energy is almost the same as earlier result. For r =1, however, the surface energy is reduced about a factor of 2. The consistency of experimental values of the potential with the exact relation is checked and necessity of large system size is pointed out. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TotsujiHiroo kn-aut-sei=Totsuji kn-aut-mei=Hiroo aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=17 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Computer Program of Assembly Line Balancing Considering the Performance Rate of Each Work Station en-subtitle= kn-subtitle= en-abstract= kn-abstract=Assembly line balancing is to assign work elements to serial work stations so as to make the work content at each station as close as possible to one limiting cycle time or pitch time, i.e., an upper time limit over every station. Until now, it is usually assumed that the performance rates of work stations are constant. But in practice the performance abilities of workers, machines or robots are varied by their own working conditions. Then the actual station times are different from standard ones, and consequently the line balance may diminish in many cases. Therefore in this paper, we propose an improved balancing method, in which work elements can be assigned to the work station having the upper time limit changed by its performance rate or ability. Further we develop the computer program of the proposed method and provide an illustrative problem and computational results. In an application of our method to the practical problems, it is shown that the actual efficiency of the production line becomes near that planned. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=AkagiFumio kn-aut-sei=Akagi kn-aut-mei=Fumio aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OsakiHirokazu kn-aut-sei=Osaki kn-aut-mei=Hirokazu aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Science affil-num=2 en-affil= kn-affil=Department of Industrial Science END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=2 article-no= start-page=15 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Transmission Distance and Bit Rate in an Optical-Fiber Multi-Level PCM Transmission System en-subtitle= kn-subtitle= en-abstract= kn-abstract=Optical-fiber multi-level PCM transmission system is investigated on the transmission distance and bit rate. A communication channel is established as follows: a light signal is modulated in intensity with a completely-balanced M-Ievel code at a transmitter, and is propagated over an optical glass fiber, and is demodulated at a receiver where the signal with an additive noise is processed through a PD, an equalizing amplifier, a matched filter, (M-l) comparators and a decision circuit. The relative power of the noise from the amplifier is increased in accordance with the reciprocal of fiber's transmittance, where shot noise and thermal noise are smoothed and decreased in power by the matched filter. The relation between the BER and the SNR leads the transmission distance. The product of the transmission distance and bit rate takes the large maximum at the large values of SNR and M. The large value of M is suitable for low-speed and high-rate system, and the interference system. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanadaYoshihiro kn-aut-sei=Tanada kn-aut-mei=Yoshihiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SanoHiroya kn-aut-sei=Sano kn-aut-mei=Hiroya aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=XuHai kn-aut-sei=Xu kn-aut-mei=Hai aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics affil-num=2 en-affil= kn-affil=Department of Electronics affil-num=3 en-affil= kn-affil=Northeastern Normal University END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue=1 article-no= start-page=1 end-page=16 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19861115 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Brushless-dc Motor Drive System Taking Account of a Load en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the power converter of ac drive system the switching behavior of semiconductors causes the distorted voltage and current waveforms, thus the drive characteristics are affected by them. It is, especially, an essential problem that the distorted current waveforms induce the torque ripple. It is assumed in the previous analysis that the input voltage of inverter is a ripple-free dc one. In industry, however, the input voltage of inverter is gained by rectifying the ac voltage. The torque ripple is caused by not only the behavior of inverter but also the behavior of converter. It is required to develop the analysis taking account of the both behaviors. In this paper, the analysis of brushless-dc motor drive system is proposed taking account of the ac supply, power converter, motor and load. This analytical method is the most suitable one for the analysis of practical system. The effects of factors, e.g. filter constants, inverter frequency, phase relation between ac supply and inverter cycle, load and inertia on the speed variation are revealed by this analysis. Further, the decision of filter constants is discussed from a view of speed variation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FunabikiShigeyuki kn-aut-sei=Funabiki kn-aut-mei=Shigeyuki aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ImanakaAkira kn-aut-sei=Imanaka kn-aut-mei=Akira aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=Mitsubishi Electric Co. affil-num=3 en-affil= kn-affil=Department of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=2 article-no= start-page=1 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Computer Aided Design of Thyristor Phase-Control Circuits en-subtitle= kn-subtitle= en-abstract= kn-abstract=The paper presents the computer aided design (CAD) method, the program, the design and the experimental results of inverse parallel thyristor phase control circuits. The calculated values agree well with the measured. The CAD program contains the next two methods which are inquired carefully by authors, such as (i) the optimization by SUMT (Sequential Unconstrained Minimization Technique) method, and (ii) the combined use of the gradient and the cramp calculation methods. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakanishiSen-ichiro kn-aut-sei=Nakanishi kn-aut-mei=Sen-ichiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KatsuyamaYoshiaki kn-aut-sei=Katsuyama kn-aut-mei=Yoshiaki aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=The Kansai Electric Power Co. Inc. affil-num=3 en-affil= kn-affil=Department of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=2 article-no= start-page=55 end-page=66 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19860228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Two-Dimensional Automatic Mesh Generator for Finite Element Analysis en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this study a new automatic mesh generator for 2- dimensional finite element analysis is proposed, and its effectivity is surveyed through a number of test examples. Proposed one is for a micro-computer, and the program is written in BASIC. The user needs no preparation for making finite element model in advance. All of the neccessary informations are displayed on CRT display and its user may answer for questions. It is expected that the cost neccessary for preparing the input-data for finite element analysis is largely decreased. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MitsuokaKazuhiko kn-aut-sei=Mitsuoka kn-aut-mei=Kazuhiko aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KajitaniEiji kn-aut-sei=Kajitani kn-aut-mei=Eiji aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Former Student of Civil Engineering Department END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=97 end-page=105 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Preparation and Dielectric Properties of [Ba,Sr]TiO(3)-Al(2)O(3)-SiO(2) Glass-Ceramics en-subtitle= kn-subtitle= en-abstract= kn-abstract=A series of ferroelectric glass-ceramics was elaborated by the controlled growth of Ba(1-x)Sr(x)TiO(3) crystal particles in the glass system 60[Ba(1-y)Sr(y)]TiO(3)-10Al(2)O(3)-30SiO(2)(0≦y≦0.2) in molar basis. Analysis of crystal phases by X-ray diffraction revealed that Sr content in Ba(1-x)Sr(x)TiO(3) increased with increasing content of SrO in glasses by its preferential transfer into the crystal phase, and the appropriate temperature for the crystal growth was 1100°C. Curie temperatures of glass -ceramics shifted to lower temperature with increasing SrO content in the crystal and comparatively high dielectric constant was obtained at room temperature for a glass-ceramics with y=0.2. Frequency dependences of dielectric constant and loss tangent were examined in the frequency range from 1 K to 1 M Hz. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OdaKiichi kn-aut-sei=Oda kn-aut-mei=Kiichi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YoshioTetsuo kn-aut-sei=Yoshio kn-aut-mei=Tetsuo aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=O-okaKazuo kn-aut-sei=O-oka kn-aut-mei=Kazuo aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Research Institute for Non-Crystalline Materials affil-num=2 en-affil= kn-affil=Research Institute for Non-Crystalline Materials affil-num=3 en-affil= kn-affil=Research Institute for Non-Crystalline Materials END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=2 article-no= start-page=47 end-page=53 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19860228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Inflow Control on Expressway Considering Traffic Equilibria en-subtitle= kn-subtitle= en-abstract= kn-abstract=When expressway and roads coexist, it is necessary to establish a reasonable traffic share between them. It may be practiced by the regulation of toll-rate of expressway. But at an occasional traffic congestion, the reasonable share is disturbed, so that some traffic control means should be taken. In this paper, we deal how to control inflows on expressway, from a viewpoint of the optimal share between expressway and roads. The minimization of total travel cost in a system is aimed under traffic equilibrium conditions. The problem is formed as a two-stage programming model, and a simple example solving the problem is showed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=InouyeHiroshi kn-aut-sei=Inouye kn-aut-mei=Hiroshi aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=2 article-no= start-page=35 end-page=45 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19860228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dynamic Behavior of Sand Bed under Oscillating Water Pressure en-subtitle= kn-subtitle= en-abstract= kn-abstract=Under the attack of storm waves, there are many destructions of coastal structures in the forms of sinking and sliding. These types of destructions will be in close relation to the dynamic behavior of sand bed around the structures. From this point of view, in this paper, we investigate the characteristics of the pore water pressure and effective stresses in the highly saturated sand bed under oscillating water pressure theoretically. The results indicate that the oscillating water pressure induce the notable drop of strength of sand bed around the structure under certain condition. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagoHiroshi kn-aut-sei=Nago kn-aut-mei=Hiroshi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MaenoShiro kn-aut-sei=Maeno kn-aut-mei=Shiro aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=81 end-page=96 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of the Number of Iterations for Detinite Convergence Condition by Use of the Gauss-Seidel Method en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this investigation the estimation method of the number of iterations for definite convergence condition by use of the Gauss-Seidel method applied for a set of linear equations which is obtained from the finite element analysis (or the finite difference analysis) of any rectangular area subdivided into N*M is proposed. Though the number of iterations can be obtained by using the eigenvalue of the governing equations, the proposed method does not require the eigenvalue but only the values of Nand M. Numerical experiments on this estimation method clarify that the estimated values are within the error bound of 10%. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KaneiToshio kn-aut-sei=Kanei kn-aut-mei=Toshio aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Yagumo Kensetsu Consultant Co. Ltd. END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=73 end-page=79 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Optimal Toll Rate and Expansion of Urban Expressway en-subtitle= kn-subtitle= en-abstract= kn-abstract=Some extension is made of the previous papers of the same title in order to investigate (1) what aspect consumers' surplus has according to the characteristics of inverse demand curve and (2) where the maximum consumers' surplus is reached in an equilibrium of toll revenues and cost. As for (1) three kinds of inverse demand curves are assumed in general form. The marginal consumers' surplus to expansion of expressway network is proved to be of definite sign (positive or negative) or equal to zero according to each curve assumed. For each of curves, the region where consumers' surplus finds its maximum is also shown on the expressway users ~ network expansion plane. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OhnishiMasahiko kn-aut-sei=Ohnishi kn-aut-mei=Masahiko aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Graduate Student, Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=61 end-page=71 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Displacement Method on Sand Bed Liquefaction under Oscillating Water Pressure en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper the liquefaction of sand bed under oscillating water pressure are treated as a basic study of the prevention works against the scouring around the hydraulic structures. The results of the former resurch show that the occurrence of the liquefaction depends on both properties of the oscillating water pressure and of the sand layer. Considering the latter properties, that is, the resistivity against the liquefaction increases with the increase of the permeability of the sand bed, we propose the displcement method as one of the prevention works, which is a method to displace the upper layer of the sand bed by the sand with large permeability. The effects of this method are investigated theoretically and experimentally. By the experimental study, it is shown that the proposed displacement method has the apparent effect to prevent the liquefaction. The experimental results are explained fairly well by the theoretical analysis based on the theory of the flow through the elastic porous media. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MaenoShiro kn-aut-sei=Maeno kn-aut-mei=Shiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagoHiroshi kn-aut-sei=Nago kn-aut-mei=Hiroshi aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=2 article-no= start-page=21 end-page=33 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19860228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=SAXS from the GP Zones in Al-4mass % Cu Alloy at Initial Stages of Ageing en-subtitle= kn-subtitle= en-abstract= kn-abstract=A series of small-angle X-ray scattering photographs with monochromated and point focussed copper Ka(1) radiation was taken of a single crystal of an Al-4mass % Cu alloy at the as-quenched state from 823K and at successive stages of ageing at 313K. The crystal was so oriented that the incident direction of the radiation was along [001] axis, and was cooled with liquid nitrogen during the exposure. The pattern of the as-quenched state was homogeneous, but each of the patterns of the aged states consisted of streaks along [100] and [010] directions and a quasi-ring around the trace of the incident beam on the film (even at the shortest ageing time. l6sec). The most intense regions were found in [100], [010] , [100] and [010] directions on the ring. With the progress of the ageing the streaks and the ring became more intense and narrower. The results can be interpreted from points of view of the formation of the GP zones parallel to {100} planes ab initio, the effect of the inter-particle interference on scattering of X-rays, and the growth of the GP zones with the ageing. Guinier radius of the GP zones at each stage can be obtained from intensity change along [110], and the values are reasonably consistent with those obtained from the cross section of the streak. The presence of multi-layer zones, besides the one-layer ones, is suggested from the humps found on several intensity curves along [100] at later stages. en-copyright= kn-copyright= en-aut-name=YamadaMasuo en-aut-sei=Yamada en-aut-mei=Masuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OhtaMutsuo en-aut-sei=Ohta en-aut-mei=Mutsuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=榊原精 kn-aut-sei=榊原 kn-aut-mei=精 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Science affil-num=2 en-affil= kn-affil=Department of Industrial Science affil-num=3 en-affil= kn-affil=Department of Industrial Science END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=41 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Off-Line Stereo Plotting by Means of Image Correlation en-subtitle= kn-subtitle= en-abstract= kn-abstract=The algorithm of automatic stereo plotting by iterative image correlation from aerial photographs and the corresponding empirical tests are described. The algorithm is oriented to off-line process, using a image scanner and a general purpose computer, and consists of 3 hierarchical correlation steps, based on one-dimensional matching using usual correlation maximum. For the correlation calculation, the FFT is effectively used. Though some defects exist in the algorithm at present, close contour plotting to middle scale maps is available except in hilly regions, in which marked features in ground covers do not exist. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MoriChuji kn-aut-sei=Mori kn-aut-mei=Chuji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HattoriSusumu kn-aut-sei=Hattori kn-aut-mei=Susumu aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HamateShinya kn-aut-sei=Hamate kn-aut-mei=Shinya aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Yakumo Constructional Consultants Co. Ltd. END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=15 end-page=40 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Three-Phase Thyristor Phase Control Circuit with Series RLC Elements en-subtitle= kn-subtitle= en-abstract= kn-abstract=An ac phase control circuit by thyristor is widely used in industry, The characteristics of the singlephase circuit with series RLC elements are numerically analyzed, and is reported the interesting phenomenon of step-up voltage without transformer. However, the performance of three phase phase control circuit with series RLC elements is not made clear. In this paper, the performance of three-phase control circuit of a balanced and an unbalanced load with series RLC elements is described. The analytical programs with each load are developed, and it is clarified that the calculated by this analytical program agree well with the measured. The calculated results, e.g. waveforms, RMS values of voltage and current, power, and power factor are illustrated and discussed the step-up phenomenon in three phase. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakanishiSen-ichiro kn-aut-sei=Nakanishi kn-aut-mei=Sen-ichiro aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FunabikiShigeyuki kn-aut-sei=Funabiki kn-aut-mei=Shigeyuki aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KomatsubaraHitoshi kn-aut-sei=Komatsubara kn-aut-mei=Hitoshi aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KuroseOsamu kn-aut-sei=Kurose kn-aut-mei=Osamu aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=Department of Electrical Engineering affil-num=3 en-affil= kn-affil=Department of Electrical Engineering affil-num=4 en-affil= kn-affil=Department of Electrical Engineering affil-num=5 en-affil= kn-affil=Graduate School of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=2 article-no= start-page=1 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=1986 dt-pub=19860228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Size of Bubbles and Gas Holdup in Bubble Columns en-subtitle= kn-subtitle= en-abstract= kn-abstract=Bubble columns are extensively used in the chemical industry. This paper evaluates the present state of the art on the size of bubbles from a sieve plate and gas holdup, mainly on the basis of the results of the authors, including previous ones. The size of bubbles formed from a sieve plate has an insignificant effect of chamber volume, and gas holdup shows some different behavior, depending on the hole diameter to liquid depth. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MiyaharaToshiro kn-aut-sei=Miyahara kn-aut-mei=Toshiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiTeruo kn-aut-sei=Takahashi kn-aut-mei=Teruo aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Chemistry affil-num=2 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=17 cd-vols= no-issue=1 article-no= start-page=1 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1983 dt-pub=19830225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hydraulic Properties of Froth Layer on a Perforated Plate en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper deals with the comparison of gas-liquid holdup and froth height on a perforated plate under various operational conditions such as liquid stagnant, cocurrent, countercurrent and crosscurrent gas-liquid flow system. Tendency to foam is remarkable in countercurrent and crosscurrent flow system. The crosscurrent flow system is suitable for the operation of mass transfer from the point of view of gas-liquid holdup. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiTeruo kn-aut-sei=Takahashi kn-aut-mei=Teruo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MiyaharaToshiro kn-aut-sei=Miyahara kn-aut-mei=Toshiro aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Chemistry affil-num=2 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=89 end-page=99 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Finite Element Analysis of Salt Water Intrusion in Nonsteady Seepage en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper are described on the finite element analysis of the nonsteady behavior of interface between salt- and freshwater in coastal groundwater. In order to investigate the validity and the accuracy of this numerical analysis solution, the results calculated by this finite element analysis have been compared with the laboratory model tests. The numerical results showed the very good agreement with the experimental data. Moreover, some applications of this analytical method have been performed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KohnoIichiro kn-aut-sei=Kohno kn-aut-mei=Iichiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishigakiMakoto kn-aut-sei=Nishigaki kn-aut-mei=Makoto aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=75 end-page=87 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Modifications of an Asynchronous Ring Arbiter en-subtitle= kn-subtitle= en-abstract= kn-abstract=Some modifications of an asynchronous ring arbiter are proposed. This arbiter is composed of a chain of cells. Each cell has one to one correspondence to a device. In the chain, there exists only one privilege to arbitrate conflicts of requests from many devices. A class of modifications is high speed arbiters, obtained by increasing the number of connecting wires between two adjacent cells. As the results, the time required for the privilege to pass through a cell decreases by about one-half compared with the original arbiter. Another class of modifications is arbiters with priority rules. They are obtained by adding a few hardware to the original arbiter. The priority order of request acknowledgements in all the cells is specified. Using above modifications, conflicts of requests in many digital systems may be feasibly arbitrated. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OkamotoTakuji kn-aut-sei=Okamoto kn-aut-mei=Takuji aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=1 article-no= start-page=45 end-page=52 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19851108 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Continuous Monitoring System for the Wastewaters Having Multiply, Randomly, and Small Effluent Characteristics -Approarch to Analysis of Chemical Oxygen Demand by Complete Flow Process- en-subtitle= kn-subtitle= en-abstract= kn-abstract=A simple system was developed for the fully automatic and continuous measurement of chemical oxygen demand (COD) in wastewater samples based on colorimetry of dichromate. A sample and a solution of sulfuric acid (1+1) containing 2mM potassium dichromate are continuously pumped with a double-reciprocating micro-pump at each flow rate of 0.3 ml/min. The wastewater sample is filtered at first with a 100-mesh stainless filter and then mixed with the dichromate solution in the mixing joint. The mixture is introduced into a reaction coil made of poly(tetrafluoroethylene) tubing (1 mm i.d., 3 mm o.d., and 20 m length), being placed in an oil bath (120℃). After reaction, the mixture passes into a quartz tubular flow-through cell (10 mm path length, 18 μl volume) in a spectrophotometer, and the absorbance is measured at 445 nm. The COD value of the sample is automatically estimated from the amount of decreased absorbance. The system was successfully applied to COD measurement of some waters, and to continuous monitoring of COD in wastewater of university laboratories. The system was also evaluated by comparing with the flow injection analyzer system previously developed by the authors. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KorenagaTakashi kn-aut-sei=Korenaga kn-aut-mei=Takashi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MoriwakeTosio kn-aut-sei=Moriwake kn-aut-mei=Tosio aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiTeruo kn-aut-sei=Takahashi kn-aut-mei=Teruo aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Center for Environmental Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Synthetic Chemistry affil-num=3 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=59 end-page=74 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=EXAFS Study on Local Structure of Iron Crystal by the Use of Asymmetrical Monochromator and PSPC en-subtitle= kn-subtitle= en-abstract= kn-abstract=The EXAFS spectroscopy equipment constructed from an asymmetrical cut flat monochromator and PSPC is applied to the structural determination of pure α-iron which has small difference (0.038nm) in the first and second nearest neighbour distance. The efficiency of the curve fitting method for the two shell model of known structure material (α-iron) is discussed, in addition to describing the details of the experimental procedure of our new type of spectrometer and of the EXAFS data analysis. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HidaM. kn-aut-sei=Hida kn-aut-mei=M. aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MaedaH. kn-aut-sei=Maeda kn-aut-mei=H. aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanabeK. kn-aut-sei=Tanabe kn-aut-mei=K. aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KamijoN. kn-aut-sei=Kamijo kn-aut-mei=N. aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TerauchiH. kn-aut-sei=Terauchi kn-aut-mei=H. aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil= affil-num=5 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=45 end-page=58 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Transient Analysis of Two-Phase Induction Motor driven by Voltage Source Inverter with Current Limiter en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, the analysis of transient performance of two-phase induction motor driven by a voltage source inverter with current limiter is described. The motor is represented by using a two-axis model, that is, the Kron primitive machine. The state equations of mechanical-electrical system are derived. The calculation method with a discrete point of time is employed in order to decrease the CPU time of computer. The calculated results gained from this method agree well with the measured. Then, with the aid of this analytical method, the discussions on transient performance of this system are also performed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FunabikiShigeyuki kn-aut-sei=Funabiki kn-aut-mei=Shigeyuki aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IyasuMasakatsu kn-aut-sei=Iyasu kn-aut-mei=Masakatsu aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KamuraTsutomu kn-aut-sei=Kamura kn-aut-mei=Tsutomu aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=Department of Electrical Engineering affil-num=3 en-affil= kn-affil=Department of Electrical Engineering affil-num=4 en-affil= kn-affil=Department of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=1 article-no= start-page=35 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19851108 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=SAXS Intensity Measurements by Photographic Methods en-subtitle= kn-subtitle= en-abstract= kn-abstract=Photographic method for measurement of small-angl X-ray scattering (SAXS) is improved. Intense pointfocussing incident beam is obtained by using doubly bent crystal monochromator made of aluminium single crystal. Microphotometry and the subsequent calculation to obtain profiles, Guinier and Porod radii, integrated intensities, and so on are facilitated by using microcomputer. Integrated SAXS intensities measured from an Al-Zn alloy which has been treated under the same heat treatment conditions are coincident with one another with probable errors less than ±6 % . Ratio of the integrated intensities obtained from two Al-Zn alloys of different composition is reasonable compared with the quasi-equilibrium phase diagram. en-copyright= kn-copyright= en-aut-name=YamadaMasuo en-aut-sei=Yamada en-aut-mei=Masuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=榊原精 kn-aut-sei=榊原 kn-aut-mei=精 aut-affil-num=2 ORCID= en-aut-name=OhtaMutsuo en-aut-sei=Ohta en-aut-mei=Mutsuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Science affil-num=2 en-affil= kn-affil=Department of Industrial Science affil-num=3 en-affil= kn-affil=Department of Industrial Science END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=31 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Influence of Magnetic Saturation of Iron-Core on Performance of Thyristor Phase Control Circuit en-subtitle= kn-subtitle= en-abstract= kn-abstract=The influence of magnetic saturation of iron-core on the performance of thyristor phase control circuit with series RLC elements is described. The circuit is analyzed by applying an approximate model of three straight lines to the flux Φ vs. current i curve of the iron-core reactor. And the influence on waveforms, r.m.s. values, power factor and response are discussed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakanishiSen-ichiro kn-aut-sei=Nakanishi kn-aut-mei=Sen-ichiro aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FunabikiShigeyuki kn-aut-sei=Funabiki kn-aut-mei=Shigeyuki aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=Department of Electrical Engineering affil-num=3 en-affil= kn-affil=Department of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=17 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Thyristor Phase Control Circuit with Parallel Resonance Elements en-subtitle= kn-subtitle= en-abstract= kn-abstract=The phase control characteristics in a thyristor phase control circuit with parallel resonance elements indicate very interesting phenomenon. Several extreme values appear on the phase control curve. The phenomenon is different from the step-up one in a thyristor phase control circuit with series RLC elements which is interpreted as series resonance. To comprehend the circuit performance with those loads, it is necessary that the phenomenon on extreme value is physically clarified from other viewpoints. In this paper the performance in this circuit is studied from two viewpoints of a natural oscillation and a parallel resonance. Then, it is found that the performance depends on a natural frequency in thyristor conducting period and a parallel resonance frequency in thyristor non-conducting period. Therefore, the interesting phenomenon on extreme value is affected by the alternative of natural frequency or parallel resonance frequency. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HimeiToyoji kn-aut-sei=Himei kn-aut-mei=Toyoji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakanishiSen-ichiro kn-aut-sei=Nakanishi kn-aut-mei=Sen-ichiro aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FunabikiShigeyuki kn-aut-sei=Funabiki kn-aut-mei=Shigeyuki aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical Engineering affil-num=2 en-affil= kn-affil=Department of Electrical Engineering affil-num=3 en-affil= kn-affil=Department of Electrical Engineering END start-ver=1.4 cd-journal=joma no-vol=20 cd-vols= no-issue=1 article-no= start-page=21 end-page=33 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19851108 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=On the Adsorptive Force in the Sucking Grasp as the Contact Surface was flat. en-subtitle= kn-subtitle= en-abstract= kn-abstract=The sucking grasp, for example, the silicon or the rubber sucker has been used widely to handle the parts in various stages of the automated process. But in order to use the sucking grasp more widely, it is necessary to develop the other type of sucking unit. In this paper, we examined the distribution of the vacuum pressure in the contact surface and estimated the adsorptive force from the vacuum pressure, the area of the contact surface, the area or the number of sucking holes, and a gap or a roughness of surface under the contact condition that the flat surface of the sucking unit sucked up the flat surface of an object. The vacuum pressure in the contact surface decreased exponentially, as the distance from the edge of the sucking hole became long. And the adsorptive force was estimated from the equation Y=1.147.P.S.(S/M)(-0.6) in the case of one sucking hole. It is necessary to consider the interaction between two sucking holes which were only separated by a very close distance to estimate the adsorptive force in case of many sucking holes. The adsorptive force became weak, as the gap en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OsakiHirokazu kn-aut-sei=Osaki kn-aut-mei=Hirokazu aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ManabeNobuo kn-aut-sei=Manabe kn-aut-mei=Nobuo aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HakodaYosinori kn-aut-sei=Hakoda kn-aut-mei=Yosinori aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KikuchiSusumu kn-aut-sei=Kikuchi kn-aut-mei=Susumu aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Science affil-num=2 en-affil= kn-affil=SHARP Co. Ltd. affil-num=3 en-affil= kn-affil=Mitsubishi Electric Co. Ltd. affil-num=4 en-affil= kn-affil=Department of Industrial Science END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=2 article-no= start-page=1 end-page=16 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Least-Squares Method for Unfolding Convolution Products in X-ray Diffraction Line Profiles en-subtitle= kn-subtitle= en-abstract= kn-abstract=A deconvolution method for the X-ray diffraction line profile is proposed, which is based on the conventional least-squares method. The true profile is assumed to be a functional form. The numerical values of parameters of the function assumed are determined so that the calculated profile, which is a convolution of the function and the instrumental profile, has a minimum deviation from the observed one. The method is illustrated by analysis of the X-ray powder diffraction profile of sodium chloride 222 reflexion under the assumption that the true profile is a Gaussian or a Cauchy function. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YokoyamaFumiyoshi kn-aut-sei=Yokoyama kn-aut-mei=Fumiyoshi aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=147 end-page=159 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bandwidth Minimization Algorithm for Finite Element Mesh en-subtitle= kn-subtitle= en-abstract= kn-abstract=Renumbering algorithms commonly in use for the band solver are generally applicable for any kind of linear equations, and, therefore, we may say that they cann't effectively utilize the characteristics of the finite element mesh. In this paper we investigate the characteristics of the finite element mesh systems, and introduce them into Taniguchi-Shiraishi Algorithm which already introduced some properties of FEM mesh systems. And through several numerical experiments it is proved that this improved algorithm is one of the fastest one. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=125 end-page=145 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=System Dynamics Model on Urban Growth with an Application to Okayama City en-subtitle= kn-subtitle= en-abstract= kn-abstract=A system dynamics model to forecast future movements of a city was studied. The model consists of three sections of population sector, industry sector, land use sector and some divisions of labor, income employment, housing land which connect each sections. Economic growth rate, public investment program, housing land supply program were incorporated in the model as political variables. The model was applied to Okayama city for thirty years from 1975 to 2005. The results of the simulation are summarized as follows: 1) The drift of peoples into Okayama city will advance in the future. 2) Tertiary industries will be given much weight as compared with secondary industries. 3) Because of the drift of peoples, housing problems will be serious in the future. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=InouyeHiroshi kn-aut-sei=Inouye kn-aut-mei=Hiroshi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OdaShinji kn-aut-sei=Oda kn-aut-mei=Shinji aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Shimizu Construction Company Ltd. END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=2 article-no= start-page=49 end-page=61 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19850225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Galerkin Method to an Integral Equation in the Kinetic Theory en-subtitle= kn-subtitle= en-abstract= kn-abstract=A Galerkin method is applied to a singular integral equation of fredholm type originated in the problem of the rarefied gas flow over a plane wall. The solution is expanded in a series of the Abramowitz function. The numerical calculations were carried out up to ten-terms expansions. The results show a good convergence of the series.The comparison is made with the previous work obtained by the moment method. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamamotoKyoji kn-aut-sei=Yamamoto kn-aut-mei=Kyoji aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Engineering Mathematics END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=105 end-page=123 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Optimal Toll Rate and Expansion of Urban Expressway en-subtitle= kn-subtitle= en-abstract= kn-abstract=A welfare economic approach is tried to an optimal decision of toll rate and expansion of urban expressway network in an equilibrium of toll revenues and cost of service supplied. The model, originated with Yamada, is such that the decision comes into optimality when the maximum consumers' surplus is reached in the equilibrium condition. The paper is concerned with some general aspects of the optimal solution and reexamination of the solution obtained in the past when used a specific demand curve. General aspects obtained are as follows; The extremum condition to consumers' surplus is equivalent to that to diverted traffic (the realized number of expressway users) only when demand curve has such a property that the marginal consumers' surplus to network expansion vanishes. In case that the marginal consumers' surplus does not vanish, the extrema of consumers' surplus is found in the regions of negative marginal diverted traffic if demand curve yields positive marginal surplus, and in the regions of the positive if it gives negative marginal surplus. The contact points of demand and average cost curves give extrema of neither consumers' surplus nor diverted traffic. An implicative finding, made out by Yamada by using a specific demand curve, that optimal network expansion is reached when the marginal service cost to expansion averaged to the marginal diverted traffic to expansion is equal to the value of time saved by using expressway just by mean trip length holds good at the points of the maximum diverted traffic, but not at the contacts of demand and average cost curves. In case of the demand curve, the condition for an equilibrium of revenues and cost to come into existence is that the minimum of the ratio of service cost averaged to the whole population of expressway users to the value of time mentioned above is less than or equal to e(-1). en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=AsaiKazuhiko kn-aut-sei=Asai kn-aut-mei=Kazuhiko aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=2 article-no= start-page=33 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19850225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Consideration on Convergence Condition of Explicit Finite Element Analysis for Heat Transfer Equation en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper treats the convergence condition of the explicit finite element method (i.e. the time and spatial axes are discretized by using the explicit finite difference method and the weighted residual method, respectively) which is applied for analyzing the heat problem in region with complex boundary configuration and also with several material properties. The main role of this study is the application of the Brauer's theorem. As the results we obtain that the usage of the Brauer's theorem is valid and that the application method of the theorem is presented in this paper. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TaniguchiTakeo kn-aut-sei=Taniguchi kn-aut-mei=Takeo aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MitsuokaKazuhiko kn-aut-sei=Mitsuoka kn-aut-mei=Kazuhiko aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TeradaTakashi kn-aut-sei=Terada kn-aut-mei=Takashi aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=91 end-page=104 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Liquefaction of Highly Saturated Sand Layer under Oscillating Water Pressure en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper the vertical distribution of pore water pressure in the highly saturated sand layer under the oscillating water pressure are treated theoretically and experimentally. By the experiments it is shown that the water pressure acting on the sand surface propagates into the sand layer with the damping in amplitude and the lag in phase, and that the liquefaction, the state that the effective stress becomes zero, occurs under certain conditions. These experimental results are explained fairly well by the same theoretical treatment as for the ground water problems in the elastic aquifer. The main characteristics of liquefaction clarified by the analysis are as follows. 1) The depth of the liquified layer increases with the increase of the amplitude and the frequency of the oscillating water pressure. 2) The increase of the volume of the water and the air in the layer increases the liquified depth. Especially the very small amount of the air affects the liquefaction significantly. 3) The liquified depth decrease rapidly with the increase of the compressibility coefficient of the sand. 4) In the range beyond a certain value of the permeability coefficient the liquified depth decrease with the increase of the coefficient. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagoHiroshi kn-aut-sei=Nago kn-aut-mei=Hiroshi aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=2 article-no= start-page=23 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19850225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Optimal Pricing in Urban Expressway en-subtitle= kn-subtitle= en-abstract= kn-abstract=A welfare economic approach is applied to investigate some implications of optimal pricing in urban expressway where two different groups of users are supposed to exist. On the assumption of a specified demand function, following implications are shown; (1) optimal prices must be such that the diversion ratios are the same and (2) the price rates must be set equal each other, where the price rate means the proportion of the price to the average user benefit. In connection with the results, the elasticity of the demand with respect to price is measured in Osaka area of Hanshin Expressway, where two different levels of price are flatly set for users according to the characteristics of their cars. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KishinoKeiichi kn-aut-sei=Kishino kn-aut-mei=Keiichi aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=65 end-page=89 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of Diffusion and Dispersion Parameters for Flow in Porous Media en-subtitle= kn-subtitle= en-abstract= kn-abstract=The purposes of this research is an investigation of the intrusion of sea water into coastal aquifers. For this subject, this paper deals with proposing rational methods of getting diffusion coefficient and dispersion parameter for flow in porous media in a laboratory. These parameters of soil are indispensable in order to apply an analytical approach or a numerical approach to actual salt water intrusion problems. Experimental apparatuses were constructed and test procedures were also developed to measure concentration behaviors in a saturated porous media by using electro conductivity probe. As the results, the diffusion coefficients for the Toyoura standard sand and the Asahi river sand determined by two methods, that is, "Boltzman's transformation method" and "Instantaneous profile analysis method". The longitudinal coefficient of dispersion for one-dimensional flow was also determined by the least squares curve fitting method with a function of a certain range of seepage velocity. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KohnoIichiro kn-aut-sei=Kohno kn-aut-mei=Iichiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishigakiMakoto kn-aut-sei=Nishigaki kn-aut-mei=Makoto aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=2 article-no= start-page=13 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19850225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Quasi-random Scanning of a Digitally Controlled Spectrometry en-subtitle= kn-subtitle= en-abstract= kn-abstract=A quasi-random method for spectral scanning is proposed to reduce an alias response to a quick change in the source abundance. A direct application is made for an atmospheric methane monitoring with a current-tunable diode laser. Only barrel shift methods are examined being found further vulnerable to drifting etalon fringes. en-copyright= kn-copyright= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=古賀隆治 kn-aut-sei=古賀 kn-aut-mei=隆治 aut-affil-num=1 ORCID= en-aut-name=KosakaMegumi en-aut-sei=Kosaka en-aut-mei=Megumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SanoHiroya en-aut-sei=Sano en-aut-mei=Hiroya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics affil-num=2 en-affil= kn-affil=Department of Electronics affil-num=3 en-affil= kn-affil=Faculty of Engineering, Fukuyama University END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=47 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Rectification of Digitized Aerial Photographic Image en-subtitle= kn-subtitle= en-abstract= kn-abstract=A practical example of digital rectification of tilted photographs using a drum scanning micro densitometer and general purpose computers is depicted. The present research covers rectification of projective distorsions, occuring when the camera axis is not truly vertical, and affine distorsions due to curvature of a drum of a scanner. For this purpose, fundamental mathematical expressions were derived. And some pixel interpolation methods necessary for image reconstruction were compared experimentally. The examples revealed, however, that the film was deformed so complexly that they could not be corrected sufficiently only by affine transformation. Accuracy of rectification was checked by use of stereo aerial photographs in terms of residual y-parallaxes. The result showed residual y-parallaxes of ± 1 pixel (± 50 μm) and sometimes ± 2 pixels were observed. They seem to be caused mainly by film deformations which have not been eliminated, and their amount seems to exceed the photogrammetric tolerance. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MoriChuji kn-aut-sei=Mori kn-aut-mei=Chuji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HattoriSusumu kn-aut-sei=Hattori kn-aut-mei=Susumu aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanabeHiroshi kn-aut-sei=Tanabe kn-aut-mei=Hiroshi aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Shusei Construction Consultant Co., LTD. END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=2 article-no= start-page=1 end-page=11 dt-received= dt-revised= dt-accepted= dt-pub-year=1985 dt-pub=19850225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Order-Disorder Transition in Urea-Polyethylene Complex en-subtitle= kn-subtitle= en-abstract= kn-abstract=The phase transition of urea complexes whose guest components range from n-paraffin to polyethylene was investigated by DSC thermal analysis. The transition temperatures increased with increasing the chain length; the related heats did not change much with the chain length. An X-ray powder diffractometry for urea-polyethylene complex revealed that the complex undergoes the same kind of phase transition between orthorhombic and hexagonal as urea-n-paraffin complex. The transition is interpreted in terms of an order-disorder transition with respect to the orientation of the guest molecule. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YokoyamaFumiyoshi kn-aut-sei=Yokoyama kn-aut-mei=Fumiyoshi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MonobeKazuo kn-aut-sei=Monobe kn-aut-mei=Kazuo aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Industrial Chemistry affil-num=2 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=31 end-page=45 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Unified Approach to System Data Handling in CAD System for Designing Control Systems en-subtitle= kn-subtitle= en-abstract= kn-abstract=System data handling in CAD sY8tem for designing control systems is discussed. A man-oriented data description method for a wide sense block diagram and its automatical transformation into the state space description is proposed. This work is a part of CAD system: CADPACS-T which has been under development for designing control systems in our laboratory. The proposal data description for a wide sense block diagram has the following features: 1) to correspond nicety to the block diagram and to be suitable for a man-oriented expression, 2) to express even a large scale system compactly by partitioning into some subsystems defined externally, 3) to be easy to add /or alter the input-output terminals, parameters or elements, and 4) to need not to assign the connection relationship explicitly owing to adopting the input-output terminal/line names. Moreover, system data handling in designing the PI controller for an actual boiler system expressed in a block diagram is taken up as an example. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KanedaMasahiro kn-aut-sei=Kaneda kn-aut-mei=Masahiro aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=AkahoriIchiro kn-aut-sei=Akahori kn-aut-mei=Ichiro aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics affil-num=2 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=16 cd-vols= no-issue=1 article-no= start-page=21 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1982 dt-pub=19820301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Improvement of Etalon-fringe Immunity in Diode-laser Derivative Spectroscopy en-subtitle= kn-subtitle= en-abstract= kn-abstract=In a sensitive spectrometry with lead-salt diode lasers, etalon-fringe phenomena often intervene in the measured absorption spectrum. Derivative methods are employed for the purpose of high resolution where the pertaining wavelength is modulated. This paper presents results of mathematical examination on a possible improvement of immunity from the etalon-fringes by choosing the profile of the wavelength modulation. en-copyright= kn-copyright= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KosakaMegumi en-aut-sei=Kosaka en-aut-mei=Megumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SanoHiroya en-aut-sei=Sano en-aut-mei=Hiroya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electronics affil-num=2 en-affil= kn-affil=Department of Electronics affil-num=3 en-affil= kn-affil=Department of Electronics END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=1 article-no= start-page=53 end-page=62 dt-received= dt-revised= dt-accepted= dt-pub-year=1984 dt-pub=19841126 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation of Three Flow Injection Analysis Methods for the Determination of Chemical Oxygen Demand en-subtitle= kn-subtitle= en-abstract= kn-abstract=Three methods for determining chemical oxygen demand (COD) by means of flow injection analysis (FIA) with potassium permanganate, potassium dichromate, or cerium(IV) sulfate as oxidant, developed in this laboratory, are described from the point of view of their operating properties. The permanganate method is the most sensitive and common, but forms manganese(IV) oxide precipitate which blocks the FIA lines and connectors. Addition of phosphoric acid in the reagent system is, however, effective to some extent in order to avoid blocking the flow system. The dichromate method is the most workable and stable, but produces toxic wastes containing chromium(VI). The cerium method is the most probable because cerium(IV) is the strongest oxidant of the three and less poisonous. The last method with cerium(IV) sulfate is therefore recommendable to apply to the continuous monitoring of COD in many situation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KorenagaTakashi kn-aut-sei=Korenaga kn-aut-mei=Takashi aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MoriwakeTosio kn-aut-sei=Moriwake kn-aut-mei=Tosio aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiTeruo kn-aut-sei=Takahashi kn-aut-mei=Teruo aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Center for Environmental Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Synthetic Chemistry affil-num=3 en-affil= kn-affil=Department of Industrial Chemistry END start-ver=1.4 cd-journal=joma no-vol=19 cd-vols= no-issue=1 article-no= start-page=45 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=1984 dt-pub=19841126 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Preparation and Dielectric Properties of [Ba, Ca] TiO(3)-Al(2)O(3)-SiO(2) Glass-Ceramics en-subtitle= kn-subtitle= en-abstract= kn-abstract=Succeeding to 60(Ba,Sr)TiO(3)-10A1(2)O(3)-30SiO(2)glassceramics reported in our previous paper, another type of ferroelectric glass-ceramics was elaborated by the controlled growth of Ba(l-x)Ca(x)TiO(3) crystal particles in the glass system 60 (Ba(l-y)Ca(y)) TiO(3)-10Al(2)O(3)-30SiO(2) (0.0