検索結果 50205 件
| JaLCDOI | 10.18926/46978 |
|---|---|
| フルテキストURL | mfe_37_2_029_044.pdf |
| 著者 | Imajo, Shuya| Konishi, Masami| Imai, Jun| Nishi, Tatsushi| |
| 抄録 | In hot strip rolling mills, the looper control system is automated. However, the looper's behavior tends to be unstable in threading. Therefore, human expert always intervenes and stabilizes the looper's behavior by tuning PID gains and interposing manipulation variable of looper control system. In this paper, we propose a method based on the recurrent neural network to express PID gains tuning action by human. Furthermore, we propose two methods to update the model by learning. To check the effectiveness of the proposed learning methods, numerical simulation applied to the looper height control is carried out. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2003-03 |
| 巻 | 37巻 |
| 号 | 2号 |
| 開始ページ | 29 |
| 終了ページ | 44 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80016037880 |
| JaLCDOI | 10.18926/46977 |
|---|---|
| フルテキストURL | mfe_37_2_013_027.pdf |
| 著者 | Shibuta, Taizo| Konishi, Masami| Imai, Jun| Nishi, Tatsushi| |
| 抄録 | Nowadays, various kind of reactor furnaces are widely used for the production in industry. The raw materials charged into the furnace generate reaction heat produced by blowing gas. Generally speaking, the reaction heat generated in the furnace is remarkably high. Therefore the occurrence of an inappropriate temperature distribution in the furnace may make damege or serious accident of the furnace. This is the motivation of furnace control. The author is considering the application of studied results to the furnace control of Blast Furnace in steel industry. To the propose, the approximated and simplified Macro Model of the Blast Furnace is constructed which has the function of representation of qualitative characteristics of the furnace in dynamical sense. The furnace temperature, distribution greatly effects both on the producting and the product quality of the furnace. Needless to say, stable furnace operation is indispensable for the economical prosperity of the industry. In this paper, macro simulation of the furnace is developed to support the analysis and design of the furnace control. Using the simulator, the stability and the control characteristics for inner furnace temperature distribtion are analised quantitatively. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2003-03 |
| 巻 | 37巻 |
| 号 | 2号 |
| 開始ページ | 13 |
| 終了ページ | 27 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015999991 |
| JaLCDOI | 10.18926/46976 |
|---|---|
| フルテキストURL | mfe_37_2_005_012.pdf |
| 著者 | Abe, Takeji| Sato, Takashi| |
| 抄録 | Cork is a material that has many characteristics, for instance, light weight, elasticity, insulation against heat, impermeability for liquid, and so forth. There are two types of cork, the natural and the agglomerated corks. In the present paper, compression tests of the natural and the agglomerated cork specimens were carried out. The compression test were done in various directions. Compressive stress was measured by a original compression apparatus, and stress-strain curves were obtained in various directions of the cork specimens. In the natural cork, there are differences between the radial and the non-radial direction. The recovery of dimensions after compression was also studied in respective directions. The structure of the deformed surface was observed by a scanning electron microscope. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2003-03 |
| 巻 | 37巻 |
| 号 | 2号 |
| 開始ページ | 5 |
| 終了ページ | 12 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015999990 |
| JaLCDOI | 10.18926/46975 |
|---|---|
| フルテキストURL | mfe_37_2_001_004.pdf |
| 著者 | Sakakibara, Akira| Kanadani, Teruto| |
| 抄録 | Effect of addition of Fe on the occurrence of serration in Al-12mass%Zn alloys was investigated. Specimens aged at 293K for various periods after quenching from various temperatures (T(Q)), 398K to 823K, were tensile-tested at room temperature. Serration occurred more easily and more remarkably with decreasing T(Q) for as-quenched specimens: in the case that T(Q)=448K serration was observed both for the binary and Fe added alloys, while in the case that T(Q)=573K none of the three alloys showed serration. For the binary alloy serration was observed only when the aging period was short enough, but addition of Fe to the binary alloy prolonged the aging period where serration could be recognized. Aging rate measured by hardness was remarkably retarded with the increase of Fe addition. These results confirm the interpretation that the serration in Al-Zn alloy occurs in the early stage of aging where small GP zones or solute clusters are formed. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2003-03 |
| 巻 | 37巻 |
| 号 | 2号 |
| 開始ページ | 1 |
| 終了ページ | 4 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80016019142 |
| 著者 | Faculty of Engineering, Okayama University| |
|---|---|
| 発行日 | 2003-03 |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 巻 | 37巻 |
| 号 | 2号 |
| 資料タイプ | その他 |
| 著者 | Faculty of Engineering, Okayama University| |
|---|---|
| 発行日 | 2002-11 |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 巻 | 37巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| JaLCDOI | 10.18926/46972 |
|---|---|
| フルテキストURL | mfe_37_1_051_060.pdf |
| 著者 | Namba, Akihiro| Toyota, Yoshitaka| Wada, Osami| Koga, Ryuji| |
| 抄録 | This paper presents pulse timing control method to reduce electromagnetic emission from multiple signal interconnections. Pulse timing control gives intentional skew between signals. Higher order harmonics are canceled because of the difference of the phase between the signals. Using this property, pulse timing control can reduce the EMI in wide frequency range. In this paper, we show that radiated electromagnetic field from multiple signal lines reduces its intensity to the same level of the field from one line by using pulse timing control. The result of measurement shows that EMI from four differential transmission lines can be reduced more than 9 dB in the 200 MHz to 800 MHz frequency range. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 51 |
| 終了ページ | 60 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015683518 |
| JaLCDOI | 10.18926/46971 |
|---|---|
| フルテキストURL | mfe_37_1_041_049.pdf |
| 著者 | Sugaya, Yasuyuki| Kanatani, Kenichi| |
| 抄録 | We study the problem of segmenting independently moving objects in a video sequence. Several algorithms exist for classifying the trajectories of the feature points into independent motions, but the performance depends on the validity of the underlying camera imaging model. In this paper, we present a scheme for automatically selecting the best model using the geometric AIC before the segmentation stage, Using real video sequences, we confirm that the segmentation accuracy indeed improves if the segmentation is based on the selected model. We also show that the trajectory data can be compressed into low-dimensional vectors using the selected model. This is very effective in reducing the computation time for a long video sequence. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 41 |
| 終了ページ | 49 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120003457326 |
| JaLCDOI | 10.18926/46970 |
|---|---|
| フルテキストURL | mfe_37_1_025_032.pdf |
| 著者 | Kanazawa, Yasushi| Kanatani, Kenichi| |
| 抄録 | We present a new method for detecting point matches between two images without using any combinatorial search. Our strategy is to impose various local and non-local constraints as "soft" constraints by introducing their "confidence" measures via "mean-field approximations". The computation is a cascade of evaluating the confidence values and sorting according to them. In the end, we impose the "hard" epipolar constraint by RANSAC. We also introduce a model selection procedure to test if the image mapping can be regarded as a homography. We demonstrate the effectiveness of our method by real image examples. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 25 |
| 終了ページ | 32 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015664456 |
| JaLCDOI | 10.18926/46969 |
|---|---|
| フルテキストURL | mfe_37_1_015_023.pdf |
| 著者 | Kanatani, Kenichi| |
| 抄録 | In order to facilitate smooth communications with researchers in other fields including statistics, this paper investigates the meaning of "statistical methods" for geometric inference based on image feature points, We point out that statistical analysis does not make sense unless the underlying "statistical ensemble" is clearly defined. We trace back the origin of feature uncertainty to image processing operations for computer vision in general and discuss the implications of asymptotic analysis for performance evaluation in reference to "geometric fitting", "geometric model selection", the "geometric AIC", and the "geometric MDL". Referring to such statistical concepts as "nuisance parameters", the "Neyman-Scott problem", and "semiparametric models", we point out that simulation experiments for performance evaluation will lose meaning without carefully considering the assumptions involved and intended applications. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 15 |
| 終了ページ | 23 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015664455 |
| JaLCDOI | 10.18926/46968 |
|---|---|
| フルテキストURL | mfe_37_1_011_014.pdf |
| 著者 | Totsuji, Chieko| Limant, Muhammad S.| Tsuruta, Kenji| Totsuji, Hiroo| |
| 抄録 | A theoretical approach which has been successful in reproducing results of molecular-dynamics simulations on dusty plasmas is applied to estimate the screening length and the electric charge of two-dimensional dust crystals of melamine particles in the discharge chamber experiment. It has been found that the screening length is of the same order of magnitude as the inter-particle distance and the electric charge decreases on increasing number density of dust particles. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 11 |
| 終了ページ | 14 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015784816 |
| JaLCDOI | 10.18926/46967 |
|---|---|
| フルテキストURL | mfe_37_1_001_010.pdf |
| 著者 | Sotobayashi, Ken| Konishi, Masami| Nishi, Tatsushi| Imai, Jun| |
| 抄録 | Auto Guided Vehicles (AGVs) are widely used in a semi-conductor fabricating factory and contribute to the stable production of a high quality semi-conductor products. In the near future, further expansion of the transportation system is expected accompanied with the rapid growth of semi-conductor industries. In such situation, the necessity of performing quick planning of transportation route and transportation control will be elevated. In this paper, practicable planning of the transportation route and transportation control are studied based on the decentralized agent method. Especially, the geometrical sizes of AGVs are considered in the determination of transportation routes and control strategy avoiding the occurrence of mutual collisions or deadlock of AGVs. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2002-11 |
| 巻 | 37巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 10 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120003457322 |
| 著者 | Faculty of Engineering, Okayama University| |
|---|---|
| 発行日 | 2002-11 |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 巻 | 37巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | Mbuna, Julius| Kaneta, Takashi| Imasaka, Totaro| |
|---|---|
| 発行日 | 2011-06-24 |
| 出版物タイトル | Journal of Chromatography A |
| 巻 | 1218巻 |
| 号 | 25号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Yorifuji, Takashi| Tsuda, Toshihide| Inoue, Sachiko| Takao, Soshi| Harada, Masazumi| |
|---|---|
| 発行日 | 2011-07 |
| 出版物タイトル | Environment International |
| 巻 | 37巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Yorimitsu, Takeshi| Kiritooshi, Naruto| Nakagoshi, Hideki| |
|---|---|
| 発行日 | 2011-08-15 |
| 出版物タイトル | Developmental Biology |
| 巻 | 356巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Hanafusa, Tadashi| Mohamed, Ali Eldib Ali| Kitaoka, Kenta| Ohue, Yoshihiro| Nakayama, Eiichi| Ono, Toshiro| |
|---|---|
| 発行日 | 2011-02-01 |
| 出版物タイトル | Cancer Letters |
| 巻 | 301巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 池田 晋| 野崎 貴博| 宇田津 徹朗| |
|---|---|
| 発行日 | 2009-03-19 |
| 出版物タイトル | 岡山大学構内遺跡発掘調査報告 |
| 巻 | 25巻 |
| 資料タイプ | 研究報告書 |
| 著者 | 光本 順| 野崎 貴博| 山本 悦世| 山口 雄治| 能城 修一| 富岡 直人| 畑山 智史| |
|---|---|
| 発行日 | 2010-08-05 |
| 出版物タイトル | 岡山大学構内遺跡発掘調査報告 |
| 巻 | 26巻 |
| 資料タイプ | 研究報告書 |
| 著者 | 岩﨑 志保| 白石 純| |
|---|---|
| 発行日 | 2008-03-21 |
| 出版物タイトル | 岡山大学構内遺跡発掘調査報告 |
| 巻 | 24巻 |
| 資料タイプ | 研究報告書 |