| JaLCDOI | 10.18926/15653 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_7_2_85.pdf |
| Author | Nakata Takayoshi| Ishihara Yoshiyuki| |
| Abstract | A new method for representing distorted wave forms is investigated. The method suggested by us is a modified vector symbolic method. It has been hitherto thought that the vector symbolic method cannot be applied to the distorted waves, because the rotating speeds of each harmonic vector are not identical. Representing the argument of the n-th harmonic vector by l/n times as large as the phase angle of the harmonic component, the relative positions of respective harmonic vectors are invariable wherever the standard vector is put, and the wave shape can be deduced from the vector diagram. We found various correspondences between the wave forms and the vector diagrams. Therefore, the wave shape can be estimated from the vector diagram, and the mutual relationships between two wave forms can also be known. In electric or magnetic circuits, the causes of distorted wave forms are in general obvious. Therefore, there are very often the fixed relationships between the amplitudes and phase angles of the harmonics. Further, in polyphase a.c. circuits, there are often the fixed relationships between corresponding harmonics in the wave forms of the respective phases. When the wave forms of those circuits are discussed, the new method investigated in this paper may offer a useful key. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1972-10-13 |
| Volume | volume7 |
| Issue | issue2 |
| Start Page | 85 |
| End Page | 88 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307535 |
| JaLCDOI | 10.18926/ESR/13902 |
|---|---|
| FullText URL | ESR_7_47.pdf |
| Author | Yamagiwa Nobuo| Suzuki, Shigeyuki| Okimura Yuji| |
| Abstract | A new rugose coral species, Lithostrotion (Siphonodendron) hinensis is described in this paper. It was collected from the Carboniferous Hina limestone in Okayama Prefecture, Southwest Japan. Judging from the paleontological data, the age indicates probably Late Viaean, Early Carboniferous. |
| Keywords | Early Carboniferous rugosa Lithostrotion (Siphonodendron) Hina Limestone Okayama |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2000-09-20 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 47 |
| End Page | 50 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310319 |
| JaLCDOI | 10.18926/52099 |
|---|---|
| FullText URL | hss_036_101_110.pdf |
| Author | Yoshioka, Fumio| |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2013-11-26 |
| Volume | volume36 |
| Start Page | 101 |
| End Page | 110 |
| ISSN | 1881-1671 |
| language | 英語 |
| Copyright Holders | Copyright © 2013 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120005365985 |
| Author | Agatsuma, Satoshi| |
|---|---|
| Published Date | 2011-03-25 |
| Publication Title | 文化共生学研究 |
| Volume | volume10 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/fest/11521 |
|---|---|
| FullText URL | 007_031_038.pdf |
| Author | Zhang, Fanghong| Tanaka, Yutaka| |
| Abstract | Relationship has been discussed by Tanaka and Zhang(1999) between the sensitivity analyses based on influence functions and on Cook's local influence, and it has been shown that equivalent results are obtained under general conditions by these analyses in statistical modeling without/with equality constraints. However, a condition implicitly assumed in the proof in Tanaka and Zhang(1999) in the case with equality constraints does not necessarily hold. The present paper gives a complete proof without assuming the condition. Also a formula for the normal curvature is derived for the convenience of practical computation. |
| Keywords | Local influence influence function equality constraints |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 38 |
| ISSN | 1341-9099 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002313336 |
| JaLCDOI | 10.18926/15568 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_23.pdf |
| Author | Yoshii Tensho| Kikuchi Susumu| |
| Abstract | The problem of the optimal assignment of facilities to locaticns has been solved by J.W. Gavett and Normann V.Plyter. In their paper the branch and bound technique is used and for this purpose the distance matrix is transformed into the matrix whose diagonal compoents are zero. The purpose of this paper is to avoid such a transformation and the store of the distance matrix into the computer. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 25 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307907 |
| JaLCDOI | 10.18926/15722 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_13_181.pdf |
| Author | Sano, Hiroya| Koga, Ryuji| Tanada, Yoshihiro| Kosaka, Megumi| |
| Abstract | This report deals with a notion of adjoint spectrum which is applicable to air-pollution monitoring by using pulsed lasers. Both Raman and absorption spectra of multiple gas complex are linear combinations of the spectra, each of which is specific to a gas species and its magnitude is proportional to the density. An extended formulation of the method of least squares is made in terms of a new notion, adjoint spectra, which visualizes the structure of the numerical filter. Applications of the derived numerical filters to the two methods are shown and features are described about the synthesized filters. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1979-03-05 |
| Volume | volume13 |
| Start Page | 181 |
| End Page | 193 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307476 |
| Author | Tahara, Makoto| Yamashita, Hiroki| |
|---|---|
| Published Date | 2007-02 |
| Publication Title | 岡山大学農学部学術報告 |
| Volume | volume96 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/fest/11594 |
|---|---|
| FullText URL | 005_153_158.pdf |
| Author | Ye, Xuan| Hayashi, Nobuyuki| Tsuboi, Sadao| |
| Abstract | This paper describes a novel synthesis of trienes by treatment of trans-2-alkenyl triphenylphosphonium bromides with BuLi in THF solution. Compounds, 5,7,9-tetradecatriene, 1,6-diphenyl-1,3,5-hexatriene, and 2,6,11,16-tetramethyl-2,6,8,10,14-hexadecapentaene were prepared in the yields of 40%, 9%, and 46%, respectively. Cross-coupling of trans-2-heptenyltriphenylphosphonium bromide and trans-3-phenyl-2-propenyltriphenylphosphonium bromide gave a mixture of 5,7,9-tetradecatriene (10.6%), 1,6-diphenyl-1,3,5-hexatriene (0.5%), and 1-phenyl-1,3,5-decatriene (9.4%). |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2000-02-29 |
| Volume | volume5 |
| Issue | issue1 |
| Start Page | 153 |
| End Page | 158 |
| ISSN | 1341-9099 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002313618 |
| JaLCDOI | 10.18926/fest/11523 |
|---|---|
| FullText URL | 007_039_044.pdf |
| Author | Watanabe, Masaji| |
| Abstract | We present some results of a finite element analysis for an unsteady flow in Kojima Lake. We also present an experimental result. The global positioning system was utilized in the experiment in order to record the temporal and the spatial data of a float traveling with the driving force of the fluid resistance. The spatial and temporal data were recorded to examine their correspondence with analytical results. |
| Keywords | lake flow numerical simulation finite element method global positioning system |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 44 |
| ISSN | 1341-9099 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002313386 |
| JaLCDOI | 10.18926/fest/11559 |
|---|---|
| FullText URL | 005_031_034.pdf |
| Author | Watanabe, Masaji| |
| Abstract | We study unsteady flow that models lake flow in Kojima Lake. We assume that a lake is connected to another area with gates, and that those gates are opened when the water level outside the gates is lower than the water level of the lake. We study unsteady flow due to the opening of the gates. We analyze the problem with the finite element method, and take detailed structures of the gates into account. |
| Keywords | unsteady flow lake flow finite element method |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2000-02-29 |
| Volume | volume5 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 34 |
| ISSN | 1341-9099 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002313848 |
| JaLCDOI | 10.18926/fest/11453 |
|---|---|
| FullText URL | 009_037_044.pdf |
| Author | Sung Jimin| Tanaka, Yutaka| |
| Abstract | There have been proposed so far many methods of statistical diagnostics in Cox regression for checking the goodness of the estimated model or checking the adequacy of the data. The former type contains the checking of the overall goodness of fit, the validity of the assumption of proportional hazards and the proper functional forms of the effects of covariates. While the latter type contains the checking whether there exist singly and/or jointly influential observations in the data set. In the present paper we study numerically the performances of various methods of diagnostics including our method of influence analysis for multiple-case diagnostics (Sung and Tanaka, 2003) by analyzing a real data set of lung cancer patients. |
| Keywords | Cox regression Influence function Local influence Influential Subsets Cox-Snell residuals Martingale residual Deviance residual |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2004-02-27 |
| Volume | volume9 |
| Issue | issue1 |
| Start Page | 37 |
| End Page | 44 |
| ISSN | 1341-9099 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002313595 |
| JaLCDOI | 10.18926/19660 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_33_2_25.pdf |
| Author | Song Baoyin| Inaba, Hideo| Horibe, Akihiko| |
| 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 1999-04-27 |
| Volume | volume33 |
| Issue | issue2 |
| Start Page | 25 |
| End Page | 37 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002308992 |
| Author | Moritsugu, Masumi| |
|---|---|
| Published Date | 1985 |
| Publication Title | Berichte des Ohara Instituts für landwirtschaftliche Biologie, Okayama Universität |
| Volume | volume19 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| Author | Uchida, Kei| Suzuki, Yukio| |
|---|---|
| Published Date | 1986 |
| Publication Title | Berichte des Ohara Instituts für landwirtschaftliche Biologie, Okayama Universität |
| Volume | volume19 |
| Issue | issue2 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/15723 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_13_195.pdf |
| Author | Sano, Hiroya| Koga, Ryuji| Tanada Yoshihiro| Kosaka, Megumi| |
| Abstract | The maximally attainable accuracy of an airpollution monitoring system is investigated. The system is composed of a tunable pulsed dye laser as the light source, photodiodes as the opto-electric converter and a low noise electronic signal processor specifically designed by the authors. The extreme value of the accuracy is given in terms of the standard deviation of the attenuation. The value is 3.4×10(-4)[Nep√(pulse number)] for an averaged value for multiple laser shots. Also the wavelength reproduceability of a dye laser was examined, which resulted in that a computer should take a part in the wavelength control in order that this method should be feasible. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1979-03-05 |
| Volume | volume13 |
| Start Page | 195 |
| End Page | 207 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307857 |
| JaLCDOI | 10.18926/15557 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_120.pdf |
| Author | Wada Tsutomu| Sawaragi Yosikazu| Yonezawa Yoo| |
| Abstract | We attempt to apply the feedback compensation technics of on-off controller to the pneumatic systems. In this paper, we describe the structure and the action of a new developed pneumatic on-off controller with feedback compensation, and the principle of the special pilot valve which is used in the controller as the on-off element. Next, it is shown analytically and experimentally that the dynamic characteristics of the controller are nearly equal to those of the continuous one which has an infinite proportional gain instead of the on-off element, if the time average of its discontinuous output is treated as the output of the controller. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 120 |
| End Page | 129 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307543 |
| Author | Itano, Arao| |
|---|---|
| Published Date | 1928-10-04 |
| Publication Title | Berichte des Ohara Instituts für landwirtschaftliche Forschungen |
| Volume | volume4 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/15511 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_25_2_55.pdf |
| Author | Ohkura Akira| Kameyama, Yoshimasa| Sayama, Hayatoshi| Suzuki, Kazuhiko| Fukumoto Shuichi| |
| Abstract | AHP can handle decision-making problems involving several criteria when some of these are difficult or impossible to compare other than numerically. When a small group of decision makers settle the multi-criteria problem by AHP, the members of group could not often reach an agreement with hierarchic structure involving objectives, criteria, sub-criteria and alternatives because they have different positions, interests, and opinions. Further, the members have different importances for criteria and sub-criteria, and have dissimilar preferences for alternatives. In this article, we reveal the troubleness of AHP in case of being used by a small group of decision makers. Moreover, we proposed a procedure of AHP which the members of group could easily agree with the structure of problem and the weights of criteria etc. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 1991-03-28 |
| Volume | volume25 |
| Issue | issue2 |
| Start Page | 55 |
| End Page | 67 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002307741 |
| Author | Itano, Arao| |
|---|---|
| Published Date | 1933-08-20 |
| Publication Title | Berichte des Ohara Instituts für landwirtschaftliche Forschungen |
| Volume | volume6 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
