JaLCDOI 10.18926/fest/11556
フルテキストURL 003_011_024.pdf
著者 渡辺 雅二|
抄録 We study a system that models a problem in which an oscillatory unit is coupled to a passive medium. We analyze the case in which an RCL circuit is coupled to an RC circuit. Some numerical results indicate when slow oscillations occur in coupled systems.
キーワード coupled circuits Van der Pol's equation slow oscillations
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 11
終了ページ 24
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313697
JaLCDOI 10.18926/fest/11562
フルテキストURL 003_037_046.pdf
著者 Kim Hyum-Jeong| 垂水 共之| 田中 豊|
抄録 The present paper deals with multivariate analyses applied to the maximum likelihood estimate(s) for (the mean vector and) the covariance matrix based on incomplete data, and derives influence functions for the mean vector, the covariance matrix and some statistics in multivariate analyses. Influential directions in the sense of Cook's local influence are also derived. A numerical example is given to show the usefulness of the proposed method.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 37
終了ページ 46
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313576
JaLCDOI 10.18926/fest/11563
フルテキストURL 003_047_062.pdf
著者 大竹 正德| 田中 豊| Lee Sunghee|
抄録 Exposure to ionizing radiation has been testified to have harmful effects on the developing human brain, particularly in the highly vulnerable period of 8-15 weeks after ovulation as an incereased frequency of severe mental retardation. However, the distribution of cases of severe mental retardation suggests a threshold in the low dose region. Data are composed of a binary (1,0) for mentally retarded or normal individuals. The statistical approaches with a threshold are conceivable for a simple, odds, logistic and Gompertz regression models. Estimation of threshold and 100(1-α)% confidence limits are derived from the maximum likelihood technique based on a profile approach.
キーワード mental retardation threshold model prenatal exposure profile approach atomic bombings
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 47
終了ページ 62
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313935
JaLCDOI 10.18926/fest/11558
フルテキストURL 003_025_029.pdf
著者 梶原 毅|
抄録 In this paper, we define coaction crossed product of Hilbert C*-bimodule by finite groups. We show that resulting bimodule is of finite type, and compute indices of them. We present a Takesaki-Takai duality theorem which is some non-commutative generalization of abelian groups case in [KW2].
キーワード Hilbert bimodule Coaction Crossed product
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 25
終了ページ 29
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313716
JaLCDOI 10.18926/fest/11560
フルテキストURL 003_031_036.pdf
著者 佐々木 徹| 梶原 毅| 石川 洋文|
抄録 We have computed the phase of spreading contaminations in Kojima Lake by using the upwind-type finite element method. We have treated the two cases: the pollutant flows from the Sasagase river and from the Kurashiki River. We see that the upwind-type finite element method is effective in both cases, when the diffusion constant is quite small.
キーワード Upwind-type Finite element method Kojima Lake
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 31
終了ページ 36
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313715
JaLCDOI 10.18926/fest/11592
タイトル(別表記) The Aesthetics in The Blue Light and German Mountain Films
フルテキストURL 003_179_191.pdf
著者 神崎 謙一|
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 179
終了ページ 191
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313619
JaLCDOI 10.18926/fest/11552
フルテキストURL 003_001_003.pdf
著者 中島 惇|
抄録 The existence of a derivation in a near-ring is not known. We construct derivations on 2×2 matrix near-ring in the sense of [MW].
キーワード Near-ring matrix near-ring derivation
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 1
終了ページ 3
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313635
JaLCDOI 10.18926/fest/11574
フルテキストURL 003_127_134.pdf
著者 島田 清|
抄録 This paper discusses the shear strength and volume change characteristics of a loose Fraser River sand. Suction-controlled simple shear tests were carried out for the unsaturated sand. Drained tests for the saturated sand were also carried out for the comparison with the unsaturated sand. The increase of the shear strength of the sand with the matric suction is very small and there is almost no increase of that over 20 kPa of the matric suction. The suppression effect of the matric suction on the volume change bahavior during shear is small, and the degree of dilation increases with the increase of the matric suction.
キーワード unsaturated sand shear strength simple shear test matric suction volume change dilatancy
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 127
終了ページ 134
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313902
JaLCDOI 10.18926/fest/11565
タイトル(別表記) An Analysis on the Structure of Evaluating Street Landscape Through Semantic Differential Technique
フルテキストURL 003_063_074.pdf
著者 井上 博司| 藤井 真紀子|
抄録 The structure on the evaluation of street landscape by men is analyzed through semantic differential technique. Some characteristic streets in Okayama and Kurashiki cities are selected for the analysis and they are evaluated by many subjects using their photographs. The results are outlined on their profile curves. Then, they are analyzed through factor analysis and some communal factors are induced. It is explained what these communal factors mean. Finally, it is considered how to make beautiful and comfortable street landscape.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 63
終了ページ 74
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313379
JaLCDOI 10.18926/fest/11568
フルテキストURL 003_097_104.pdf
著者 Hassan Muhammad Qumrul| 大久保 賢治|
抄録 Surface air temperature distribution over the Ganges Delta Region of southwest Bangladesh and its tendency of warming are discussed through the analyses based upon the long-term temperature data from 1900-93. The data consist of two parts corresponding to the time-periods: 1973-93 and 1900-72. The study area is one of most affected places by the annual monsoon hydrological cycle and the present observation from these temperature data indicate that the surface air temperature gradient in the north-south direction is significant in the rainy season and that the temperature of the region is at an increasing tendency; the warming rate during the data periods (1900-93) on the long-term mean annual basis is estimated as 0.77℃ at Satkhira of the Khulna division and 0.29℃ as an areal average including the Barisal division, for the time difference of about half a century between the data periods before and after 1972.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 97
終了ページ 104
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313675
JaLCDOI 10.18926/fest/11554
フルテキストURL 003_005_009.pdf
著者 石川 洋文|
抄録 We investigate the Maass wave form for Γ(0)(2) whose eigenvalue of Laplacian Δ is 1/4-π(2)/log(2)(√2-1). In this note, we study the methods of calculation of its Fourier coefficients and carry out the numerical calculations.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 5
終了ページ 9
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313535
JaLCDOI 10.18926/fest/11570
フルテキストURL 003_105_120.pdf
著者 Kidtimonton Surasri| 三野 徹|
抄録 Two optimization models are formulated based on different objectives for assisting the irrigation planner in making decision on agricultural planning during drought year. The sensitive degree of water shortage area in the irrigation project are classified by those models. They are solved by simplex method. Firstly, the Two-phase method is applied to analyze the artificial variables in the formulated model. Then, the formulated model is modified after getting rid of the artificial variables to obtain the feasible solution. The agricultural planning is planned by considering the classified area with social equity and economic improvement. Crop diversification is introduced to conduct in the very sensitive water shortage area and intermittent irrigation system is introduced to operate in the moderately sensitive water shortage area. The integrated farming system, the separation of land owner and cultivator and the disposition of substitute lots system are also suggested to conduct in this study project.
キーワード agricultural planning Two-phase method integrated farming sensitive water shortage disposition of substitute lots system
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 105
終了ページ 120
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313819
JaLCDOI 10.18926/fest/11567
フルテキストURL 003_075_095.pdf
著者 Magda Waldemar| 前野 詩朗| 名合 宏之|
抄録 The response on sandy seabed sediments to a harmonically oscillating water-table, with a special consideration of the wave-induced pore-pressure oscillations around a pipeline buried in seabed sediments, is studied in the present work experimentally and numerically. The aim of the analysis was: (1) to observe a true distribution pattern of the wave-induced pore-pressure oscillations acting on the pipeline outer surface, and (2) to verify small-scale test results using numerical computations performed for a wide range of saturation conditions of seabed sediments, under the assumption of a compressible two-phase medium compound of the pore-fluid and soil skeleton, as well as a finite thickness of a permeable seabed layer.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 75
終了ページ 95
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313821
JaLCDOI 10.18926/fest/11588
タイトル(別表記) Pronunciation of Ausutralian Spoken English
フルテキストURL 003_157_169.pdf
著者 柏瀬 省五|
抄録 The present paper deals with the Pronunciation of Australian Spoken English: (1) Samples of Popular Pronunciation of Australian Spoken English, (2) 3 Varieties of Australian Accent of Spoken English, (3) Social Attitudes towards 3 Varieties of Australian Accents,(4) Sociolinguistic Shift of Australian Pronunciation Practice, (5) Irregularities of Australian Pronunciation of Spoken English. The Characteristics of "General" and "Broad" Accents of Australian English.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 157
終了ページ 169
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313449
JaLCDOI 10.18926/fest/11572
タイトル(別表記) Comparison of micrometeorological environments inside and outside a watermelon plastic greenhouse
フルテキストURL 003_121_126.pdf
著者 森田 昇| 三浦 健志|
抄録 The use of glass and plastic greenhouses have rapidly increased in recent years. Meteorological and soil moisture environments inside a greenhouse are significantly different from those in the open field. These differences should be understandable to establish accurate predictions of water consumption and evapotranspiraton inside a greenhouse which play impotrant roles in the design of any irrigation system. This study aims to estimate the micrometeorological conditions inside a watermelon plastic greenhouse which can be used for evapotranspiration calculations. Therefore, micrometeorological data were measured inside and outside the greenhouse for the comparison purposes. The results of this study may be summarized as : (1) Solar radiation inside the greenhouse was about 70% of that of outside it. (2) Net radiation during the daytime inside the greenhouse was almost the same as the absorbed total short-wave radiation. (3) The difference of air temperature inside and outside the greenhouse was very large during the daytime whereas not much difference was observed during the nighttime. (4) Both relative humidity and saturation deficit inside the greenhouse were higher than outside in case of highly vegetative land. (5) Wind speed inside the greenhouse was almost zero, while outside the average value was 1.8m/s.
キーワード plastic greenhouse micrometeorology watermelon
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 121
終了ページ 126
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313884
JaLCDOI 10.18926/fest/11590
タイトル(別表記) ON FEUDALISM - Definition, Complex, Civilization -
フルテキストURL 003_171_178.pdf
著者 外村 直彦|
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 171
終了ページ 178
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313327
JaLCDOI 10.18926/fest/11576
タイトル(別表記) Dynamics of the Indian Automobile Industry: Recent Growth and Location
フルテキストURL 003_135_144.pdf
著者 友澤 和夫|
抄録 In recent years, India has enjoyed economic prosperity that she had never experienced from the time on the independence. This article discusses dynamics of the automobile industry, one of the highest growth manufacturing sectors under the liberalization policy in the 1990s. After a brief historical explanation of the industry, the author describes corporate strategies of new comers, classified into three divisions; i.e. passenger car, commercial vehicle and two wheelers. Then he also analyze their distribution patterns from the view point of transport cost and Indian industrial location policy. The location of car assembly units in the 1990s tends to concentrate in greenfields on the outskirts of the existing agglomerations of the automobile industry.
キーワード automobile industry liberalization industrial location India
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 135
終了ページ 144
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002314042
JaLCDOI 10.18926/fest/11578
タイトル(別表記) Consideration for the correlation between basicity of oxide glasses and chemical shift of O1s binding energy in XPS
フルテキストURL 003_145_156.pdf
著者 難波 徳郎| 三浦 嘉也|
抄録 Binding energy of O1s core electron measured in XPS is a candidate to determine new scale of Lewis basicity of oxide ion in glass. Some mathematical expressions for the basicity or XPS chemical shift, such as charge parameter and optical basicity, are compared with experimental O1s binding energy in binary alkali oxide glasses. The expressions so far in use need some modification in parameters. A new empirical expression introduced in this paper gives new concept and universal scale of basicity.
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1998-01-14
3巻
1号
開始ページ 145
終了ページ 156
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313359