検索結果 22966 件
| 著者 | 藤原 久子| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 河合 利夫| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 伊藤 信隆| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17849 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_99.pdf |
| 著者 | Kato, Hidehiro| Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 99 |
| 終了ページ | 107 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308980 |
| 著者 | 河野 澤與| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 須藤 千鶴子| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 須藤 千鶴子| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17844 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_75.pdf |
| 著者 | 大江 啓太| 小西 正躬| 今井 純| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 75 |
| 終了ページ | 92 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308900 |
| JaLCDOI | 10.18926/17843 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_61.pdf |
| 著者 | 川村 真央| 小西 正躬| Yamagata, Katuki| Shimomura, Koichi| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 61 |
| 終了ページ | 74 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308930 |
| 著者 | 宮本 俊彦| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17841 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_55.pdf |
| 著者 | 井上 真一郎| 小西 正躬| 今井 純| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 55 |
| 終了ページ | 60 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308973 |
| 著者 | 福島 功| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17839 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_49.pdf |
| 著者 | 赤松 慎也| 小西 正躬| 今井 純| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 49 |
| 終了ページ | 54 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308854 |
| 著者 | 福島 功| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17837 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_39.pdf |
| 著者 | 桑嶋 崇行| 今井 純| 小西 正躬| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 39 |
| 終了ページ | 48 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308875 |
| 著者 | 福島 功| |
|---|---|
| 発行日 | 1972-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17833 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_27.pdf |
| 著者 | 東辻 浩夫| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 27 |
| 終了ページ | 31 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308947 |
| 著者 | 西下 明| |
|---|---|
| 発行日 | 1972-08-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 7-8号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/17829 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_16.pdf |
| 著者 | Kurose Tomoyuki| 鶴田 健二| 東辻 千枝子| 東辻 浩夫| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 16 |
| 終了ページ | 21 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308928 |
| 著者 | 西下 明| |
|---|---|
| 発行日 | 1972-08-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 84巻 |
| 号 | 7-8号 |
| 資料タイプ | 学術雑誌論文 |