検索結果 25022 件
| JaLCDOI | 10.18926/AMO/45264 |
|---|---|
| フルテキストURL | 65_2_63.pdf |
| 著者 | Mizoguchi, Yoshinori| Suzuki, Etsuji| Tsuchida, Hiroaki| Tsuda, Toshihide| Yamamoto, Eiji| Nakase, Katsumi| Doi, Hiroyuki| |
| 抄録 | There have been only 2 reports of a large-scale foodborne outbreak arising from Salmonella enterica serotype Braenderup infection worldwide. On August 9, 2008, an outbreak originating in boxed lunches occurred in Okayama, Japan. We conducted a cohort study of 786 people who received boxed lunches from a particular catering company and collected 644 questionnaires (response rate:82%). Cases were defined as those presenting with diarrhea (≧4 times in 24h) or fever (≧38℃) between 12 am on August 8 and 12 am on August 14. We identified 176 cases (women/men:39/137);younger children (aged＜10 years) appeared to more frequently suffer severe symptoms. Three food items were significantly associated with higher risk of illness;tamagotoji (soft egg with mixed vegetables and meat) (relative risk (RR):11.74, 95% confidence interval (CI):2.98-46.24), pork cooked in soy sauce (RR:3.17, 95% CI:1.24-8.10), and vinegared food (RR:4.13, 95% CI:1.60-10.63). Among them, only the RR of tamagotoji was higher when we employed a stricter case definition. Salmonella Braenderup was isolated from 5 of 9 sampled cases and 6 food handlers. It is likely that unpasteurized liquid eggs contaminated by Salmonella Braenderup and used in tamagotoji caused this outbreak. |
| キーワード | boxed lunch cohort study foodborne diseases Salmonella Braenderup unpasteurized liquid eggs |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 63 |
| 終了ページ | 69 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519363 |
| Web of Science KeyUT | 000289818800001 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| JaLCDOI | 10.18926/fest/44792 |
|---|---|
| タイトル（別表記） | Improvement of complementary relationship-based evapotranspiration model |
| フルテキストURL | fest_016_035_039.pdf |
| 著者 | 中道 丈史| 諸泉 利嗣| 三浦 健志| |
| 抄録 | Advection-Aridity(AA) model can calculate actual evapotranspiration by using only meteorological data. However, comparing the model with Penman equation showed that AA model doesn’t properly evaluate evapotranspiration from urban moisture area. In urban area, Actual evaporation from water calculated by AA model(E) are much less than that by Penman equation(Epo). Multiple regression analysis using estimation results indicates that the difference between the models is due to the difference of the sensitivity to vapor pressure deficit between the models. To improve this problem, modification coefficient k, defined as k=a･albedo+b, is suggested. Regression coefficients a, b are determined as satisfying k=Epo/E for water and k=1 for urban surface. By using this coefficient k, evaporation from water is nearly equal to value estimated by Penman equation, while evaporation from urban surface is changeless. |
| キーワード | Complementary relationship Actual evapotranspiration Potential evapotranspiration Water budget |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2011-03-18 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 35 |
| 終了ページ | 39 |
| ISSN | 2185-3347 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002949472 |
| JaLCDOI | 10.18926/fest/44791 |
|---|---|
| タイトル（別表記） | The Changes and Problems of Commercial Activities in terms of the Questionnaire Survey in Omote-cho as the Central Shopping Street in Okayama City |
| フルテキストURL | fest_016_007_033.pdf |
| 著者 | 韩 静| 市南 文一| |
| 抄録 | The present study mainly studied some properties of retail stores on the central shopping streets in Okayama City while looking back on the transition of the commerce. Second, we investigated the actual conditions of most retail stores in Omote-cho in terms of the questionnaire survey. Third, we considered the problems and measures on retail stores, a little. The charm of the central shopping streets has decreased relatively in Okayama City due to the advancement of a large-scale stores and the location competition of convenience stores. The number of empty stores has increased and the amount of the pedestrian traffic, the value of sales, and the number of retail stores have shown the decreasing tendency in eight commercial blocs in Omote-cho. Therefore, the unique features in Omote-cho should be polished while esteeming the history and the culture. The charm and/or the atmosphere of traditional commercial blocs is requested to be created while sending new informations that continue to create young person's fashion and culture. |
| キーワード | Retail Stores Central Shopping Street Questionnaire Survey Omote-cho Okayama City |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2011-03-18 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 7 |
| 終了ページ | 33 |
| ISSN | 2185-3347 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002949471 |
| JaLCDOI | 10.18926/fest/44790 |
|---|---|
| タイトル（別表記） | Validation of Dollar cost averaging investment method |
| フルテキストURL | fest_016_001_005.pdf |
| 著者 | 田路 正幸| 笛田 薫| |
| 抄録 | As a method of long term investment for private investor, the dollar cost averaging investment method is well known and seems to reduce the purchase cost because we purchase risk assets with same amount of monye every month, then we purchase many assets when the price of assets is low and few assets when the price is high. On the other hand, if the expectation of the return of the risk assets is positive, we have the maximum expectation of return when we purchase the risk assets with all of money to invest. To reduce the risk of investment, diversified investments are effective. However question whehter we use the dollar cost averaging investment method or investe money all at once to well-diversified risk assets remains. In this study, we validate the effecte of the ddollar cost averaging investment method by Monte Carlo simulation. |
| キーワード | Dollar cost averaging investment Monte Carlo simulation Stock price index |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2011-03-18 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 5 |
| ISSN | 2185-3347 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002949470 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 岡山大学環境理工学部| |
|---|---|
| 発行日 | 2011-03-18 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 巻 | 16巻 |
| 号 | 1号 |
| 資料タイプ | その他 |
| 著者 | 遊佐 徹| |
|---|---|
| 発行日 | 2011-03-31 |
| 出版物タイトル | 岡山大学文学部プロジェクト研究報告書 |
| 巻 | 17巻 |
| 資料タイプ | 研究報告書 |
| JaLCDOI | 10.18926/44500 |
|---|---|
| フルテキストURL | mfe_045_054_059.pdf |
| 著者 | Nekado, Kenta| Takai, Yusuke| Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| 抄録 | 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 considers squaring algorithms efficient for cubic extension field which is often used for pairing implementaions. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 54 |
| 終了ページ | 59 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 80021759252 |
| JaLCDOI | 10.18926/44499 |
|---|---|
| フルテキストURL | mfe_045_046_053.pdf |
| 著者 | Nogami, Yasuyuki| Yanagi, Erika| Izuta, Tetsuya| Morikawa, Yoshitaka| |
| 抄録 | Recently, composite order pairing–based cryptographies have received much attention. The composite order needs to be as large as the RSA modulus. Thus, they require a certain pairing–friendly elliptic curve that has such a large composite order. This paper proposes an efficient algorithm for generating an ordinary pairing–friendly elliptic curve of the embedding degree 1 whose order has two large prime factors as the RSA modulus. In addition, the generated pairing–friendly curve has an efficient structure for the Gallant–Lambert–Vanstone (GLV) method. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 46 |
| 終了ページ | 53 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120002905955 |
| JaLCDOI | 10.18926/44498 |
|---|---|
| フルテキストURL | mfe_045_036_045.pdf |
| 著者 | Kanatani, Kenichi| Niitsuma, Hirotaka| |
| 抄録 | We present a new method for optimally computing the 3-D rotation from two sets of 3-D data. Unlike 2-D data, the noise in 3-D data is inherently inhomogeneous and anisotropic, reflecting the characteristics of the 3-D sensing used. To cope with this, Ohta and Kanatani introduced a technique called “renormalization”. Following them, we represent a 3-D rotation in terms of a quaternion and compute an exact maximum likelihood solution using the FNS of Chojnacki et al. As an example, we consider 3-D data obtained by stereo vision and optimally compute the 3-D rotation by analyzing the noise characteristics of stereo reconstruction. We show that the widely used method is not suitable for 3-D data. We confirm that the renormalization of Ohta and Kanatani indeed computes almost an optimal solution and that, although the difference is small, the proposed method can compute an even better solution. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 36 |
| 終了ページ | 45 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 80021759250 |
| JaLCDOI | 10.18926/44497 |
|---|---|
| フルテキストURL | mfe_045_027_036.pdf |
| 著者 | Kanatani, Kenichi| Sugaya, Yasuyuki| |
| 抄録 | We describe in detail the algorithm of bundle adjustment for 3-D reconstruction from multiple images based on our latest research results. The main focus of this paper is on the handling of camera rotations and the efficiency of computation and memory usage when the number of variables is very large; an appropriate consideration of this is the core of the implementation of bundle adjustment. Computing the fundamental matrix from two views and reconstructing the 3-D structure from multiple views, we evaluate the performance of our algorithm and discuses technical issues of bundle adjustment implementation. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 27 |
| 終了ページ | 35 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 80021759249 |
| JaLCDOI | 10.18926/44496 |
|---|---|
| フルテキストURL | mfe_045_015_026.pdf |
| 著者 | Kanatani, Kenichi| Rangrajan, Prasanna| Sugaya, Yasuyuki| Niitsuma, Hirotaka| |
| 抄録 | We present a new least squares (LS) estimator, called “HyperLS”, specifically designed for parameter estimation in computer vision applications. It minimizes the algebraic distance under a special scale normalization, which is derived by rigorous error analysis in such a way that statistical bias is removed up to second order noise terms. Numerical experiments suggest that our HyperLS is far superior to the standard LS and comparable in accuracy to maximum likelihood (ML), which is known to produce highly accurate results in image applications but may fail to converge if poorly initialized. Our HyperLS is a perfect candidate for ML initialization. In addition, we discuss how image-based inference problems have different characteristics form conventional statistical applications, with a view to serving as a bridge between mathematicians and computer engineers. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 15 |
| 終了ページ | 26 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120002905952 |
| JaLCDOI | 10.18926/44495 |
|---|---|
| フルテキストURL | mfe_045_001_014.pdf |
| 著者 | Akiyoshi, Tatsuro| Imai, Jun| Konishi, Masami| |
| 抄録 | This paper presents a method of the controller design for the handling machine by using dsPIC(Digital Signal Processor + Peripheral Interface Controller). Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor, cost saving, and improvement of the productivity. Such robots need to have positioning performance of high precision and simultaneously to save cost. In this paper, a digital optimal servo controller is designed, and it is implemented into our barebones controller which involves dsPIC. We have designed and manufactured the controller which is added suitable peripherals to improve the consistency between the mechanical machine operating in continuous time and controller in discrete time. The significance of this research is that digital implementation of the embedded system which has performance-limitation has ensured a comparable result, against the one with PC which has broad utility. When it is used as a controller, it is possible to restrain product prices greatly equivalent PC precision. We demonstrate potential that good control can be achieved even with low cost. Our research has lead to the viability of lower cost and higher performance system for the production process at factories. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 1 |
| 終了ページ | 14 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120002905951 |
| 著者 | 西山 康一| |
|---|---|
| 発行日 | 2011-02-01 |
| 出版物タイトル | 岡山大学文学部プロジェクト研究報告書 |
| 巻 | 16巻 |
| 資料タイプ | 研究報告書 |
| 著者 | 岡山大学大学院文化科学研究科| |
|---|---|
| 発行日 | 2011-03-25 |
| 出版物タイトル | 文化共生学研究 |
| 巻 | 10巻 |
| 資料タイプ | その他 |