検索結果 2117 件
| 著者 | 菅田 毅| |
|---|---|
| 発行日 | 1971-06-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 83巻 |
| 号 | 5-6号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 鈴木 健二| |
|---|---|
| 発行日 | 1978-10-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 90巻 |
| 号 | 9-10号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 渡邊 彰吾| |
|---|---|
| 発行日 | 2009-09-30 |
| 出版物タイトル | |
| 資料タイプ | 学位論文 |
| 著者 | Akudago John Apambilla| |
|---|---|
| 発行日 | 2009-09-30 |
| 出版物タイトル | |
| 資料タイプ | 学位論文 |
| 著者 | 森脇 重光| |
|---|---|
| 発行日 | 1975-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 87巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 三村 恭永| |
|---|---|
| 発行日 | 1979-08-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 91巻 |
| 号 | 7-8号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 久山 秀幸| |
|---|---|
| 発行日 | 1979-08-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 91巻 |
| 号 | 7-8号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 片山 昭| |
|---|---|
| 発行日 | 1979-08-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 91巻 |
| 号 | 7-8号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 鞠 先孟| |
|---|---|
| 発行日 | 2009-03-25 |
| 出版物タイトル | |
| 資料タイプ | 学位論文 |
| 著者 | 荒木 久美子| |
|---|---|
| 発行日 | 1984-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 96巻 |
| 号 | 5-6号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 荒木 久美子| 樋口 譲二| 神崎 晋| 片山 雅博| 樋本 裕介| 内田 良幸| 小倉 威郎| 藤田 千春| 木本 浩| |
|---|---|
| 発行日 | 1984-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 96巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 嶋田 義弘| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/15827 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_21_1_1.pdf |
| 著者 | Funabiki Shigeyuki| Imanaka Akira| Himei Toyoji| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1986-11-15 |
| 巻 | 21巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 16 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307821 |
| JaLCDOI | 10.18926/15804 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_16_2_1.pdf |
| 著者 | Yokoyama Fumiyoshi| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1982-03-29 |
| 巻 | 16巻 |
| 号 | 2号 |
| 開始ページ | 1 |
| 終了ページ | 16 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307445 |
| JaLCDOI | 10.18926/15800 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_19_2_49.pdf |
| 著者 | Yamamoto Kyoji| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1985-02-25 |
| 巻 | 19巻 |
| 号 | 2号 |
| 開始ページ | 49 |
| 終了ページ | 61 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307308 |
| JaLCDOI | 10.18926/15795 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_16_1_65.pdf |
| 著者 | Kohno Iichiro| Nishigaki Makoto| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1982-03-01 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 65 |
| 終了ページ | 89 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307205 |
| JaLCDOI | 10.18926/15793 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_16_1_47.pdf |
| 著者 | Mori Chuji| Hattori Susumu| Tanabe Hiroshi| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1982-03-01 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 47 |
| 終了ページ | 64 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307893 |
| JaLCDOI | 10.18926/15790 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_16_1_21.pdf |
| 著者 | Koga, Ryuji| Kosaka, Megumi| Sano, Hiroya| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1982-03-01 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 21 |
| 終了ページ | 30 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307691 |
| JaLCDOI | 10.18926/15784 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_15_2_147.pdf |
| 著者 | Nago Hiroshi| Kawara Osami| |
| 抄録 | In this paper, characteristics of hydraulics and water quality in Kojima Bay are discussed based on field observations. The main results obtained are as follows. (1) The variation of flow rate in Kojima Bay has periods for 30 minutes to 2 hours. This characteristic is represented by a two-dimensional numerical simulation fairly well. (2) The local distributions of salinity and suspended solids show increase in the direction to the mouth of Kojima Bay. On the other hand, the distribution of COD(Mn) is nearly uniform in the whole area of the bay. Salinity appears to be influenced by river discharge sensitively but suspended solids does not. (3) The vertical distributions of salinity and suspended solids are similar. There are similar points between the cross-sectional average of water quality and surface water quality. (4) The surface water quality seems to be influenced by the variation of velocity. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1981-03-30 |
| 巻 | 15巻 |
| 号 | 2号 |
| 開始ページ | 147 |
| 終了ページ | 164 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308021 |
| JaLCDOI | 10.18926/15782 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_15_2_133.pdf |
| 著者 | Mori Chuji| Taniguchi Takeo| Kimoto Teruyuki| |
| 抄録 | From the theoretical approach to the fill-in minimization problem we present one of the optimal vertex elimination process for a regular finite element mesh M (nxn), and through a number of numerical experiments it is verified that the new process model can always lead to better numerical results comparing to other methods presently in use. Since the process here presented cann't give the actual dissections of M but can clarify how the optimal elimination is, the process includes George's Nested Dissection Method and the method by Duff, Erisman and Reid. By this investigation we can conclude that l) the concept of "Dissection" is neccessary for minimizing the number of fill-ins, 2) the location of the dissection lines can be systematically decided even if n of M is odd or even number, and though the interior area of M is dissected as George's Method, the surrounding area of M is rather irregularily dissected, and 3) the model of the vertex elimination process given in this paper is applied to other kind of regular finite element mesh or finite difference mesh, too. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1981-03-30 |
| 巻 | 15巻 |
| 号 | 2号 |
| 開始ページ | 133 |
| 終了ページ | 146 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307564 |