JaLCDOI 10.18926/fest/11485
フルテキストURL 010_029_039.pdf
著者 Ju Xian Meng|
抄録 The generalized Grothendieck-Witt ring of nonsingular Hermitian forms with positioning map is the cartesian product of the ordinary Grothendieck-Witt ring of nonsingular Hermitian forms and a map ring. We study the generalized Grothendieck-Witt ring by computing the map ring.
キーワード Grothendieck Witt ring orbit GAP
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2005-02-28
10巻
1号
開始ページ 29
終了ページ 39
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313655
JaLCDOI 10.18926/fest/11484
フルテキストURL 010_023_028.pdf
著者 渡辺 雅二| Liu Ying| Wang Ming Jun|
抄録 Topographical data of Kojima Lake have been updated by applying data obtained after dredging. Together with tide level of Kojima Bay and water levels of Kurashiki River and Sasagase river, the information was incorporated in computational analysis of unsteady flows generated in the lake when the water was discharged from Kojima Lake to Kojima, Bay. A finite element method was applied to equations governing unsteady flows, and the transition of discharge was obtained.
キーワード water environment finite element method numerical simulation
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2005-02-28
10巻
1号
開始ページ 23
終了ページ 28
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313649
JaLCDOI 10.18926/fest/11478
フルテキストURL 009_163_166.pdf
著者 Nakatsu Shogo| 坪井 貞夫|
抄録 Diels-Alder reactions of 5,5,5-trichloro-3-penten-2-one and ethyl 4,4,4-trichloro-2-butenoate with cyclopentadiene in the presence of a chiral Lewis acid gave exo-2-acetyl-endo-3-trichloromethyl-bicyclo[2.2.1]hept-5-ene and exo-2-ethoxycarbonyl-endo-3-trichloromethylbicyclo[2.2.1]hept-5-ene with 40% and 7% e.e., respectively.
キーワード asymmetric reaction Diels-Alder reaction asymmetric Diels-Alder reaction chiral Lewis acid trichloromethy group
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 163
終了ページ 166
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313377
JaLCDOI 10.18926/fest/11476
タイトル(別表記) Evaluation of Surface State of Ceramic Particles Suspended in Aqueous Solution by Potentiometric Titration Method
フルテキストURL 009_153_162.pdf
著者 三浦 嘉也| 難波 徳郎| 篠田 真克|
抄録 Surface states of ceramic particles such as SiO(2), Al(2)O(3), Si(3)N(4) and so on suspended in aqueous alkaline solutions were successfully and easily determined by a potentiometric titration method. Isoelctric point, iep and excess surface charge density were classified and evaluated for many ceramic particles from the view points of aggregation and dispersion of particles and solubility in aqueous solution.
キーワード potentiometric titration method isoelctric point excess surface charge density ceramic particle suspension aqueous solution
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 153
終了ページ 162
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313753
JaLCDOI 10.18926/fest/11472
タイトル(別表記) Chemical Changes of Dredged Soil in Kojima Lake from the Viewpoint of Soil Reaction
フルテキストURL 009_137_140.pdf
著者 武村 光一郎| 足立 忠司|
抄録 While dredged soil is increasing, the processing problem isn't solved. So it is expected to use effectively as the soil material. Although, to use dredged soil, the chemical characteristic must be grasped. It is because acidification cause material (pyrite) can be contained in dredged soil. It causes sulfulic ions when it touches air and has the possibility to become acidification. In this experiment, dredged soil in Kojima Lake was made clear that it contained in pyrite and acidified under the oxidation condition. Accordingly, when using dredged soil as ground resources, it is necessary to use as the soil material such as filling-up reclamation under the deoxidization condition.
キーワード dredged soil pyrite acidify soil moisture condition
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 137
終了ページ 140
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313330
JaLCDOI 10.18926/fest/11471
フルテキストURL 012_151_156.pdf
著者 Chetin Amine Cifci| 市南 文一|
抄録 More than billions of years, Earth activity and earthquakes have functioned as the most important part in shaping the physical features of our Earth, on both social life and environment. Its unavoidable results always change life styles and city's structures with its positive and negative effects. To diminish those negative effects or avoid precise earthquake hazard, informing society is very crucial that the strong awareness decreases the risk as seen from past experiences all around the world. The research technique is functioned as questionnaire and applied in the area to achieve more realistic information and to maintain the essential arguments. All along the study, it is tried to think up the earthquake phenomena well known and straightforwardly recognized by a considerable quantity of people. Consequently, it is observed in this study that; firstly, telecommunication is most selected item both before and after earthquake in the point of its effectiveness. Secondly, telecommunication tools more preferable though, public announcement more trusting for society as power of affection on personal decision mechanisms. Thirdly, as a new tendency after earthquake, internet preference increased by means of information source about earthquake.
キーワード Awareness of earthquake Importance of information Relative reliability of sources Internet and public announcement
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2007-03-15
12巻
1号
開始ページ 151
終了ページ 156
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313418
JaLCDOI 10.18926/fest/11470
タイトル(別表記) Diversity of Agricultural Production and Its Change in Tottori Prefecture
フルテキストURL 009_121_135.pdf
著者 市南 文一|
抄録 In this paper, diversity of agricultural production and its change was examined for some 45 years in Japan and for 1960, 1980, and 2000 in Tottori prefecture. The concept of entropy was used in order to measure the diversity of the agricultural production which consists of some sections. Agricultural production section in Japan has been diversified in the long run. The ratio of rice has been decreasing gradually for a policy of cutting back on the acreage under cultivation. Although the ratio of stock raising and fruits has increased, it tends in recent years to stagnate. The rate of vegetables has increased remarkably. Combination type for every municipalities was determined with the standard value A method, and complemented examination of agricultural diversity.
キーワード Agricultural Production Diversity Entropy Sustainability Tottori Prefecture
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 121
終了ページ 135
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313477
JaLCDOI 10.18926/fest/11468
フルテキストURL 009_111_116.pdf
著者 Su Hai| 谷口 健男| Chouw Nawawi|
抄録 The study addresses the influence of bumpers as reduction measures at the bridge decks. The considered devices are steel spring, steel spring with additional viscous damper or steel spring with additional friction element. Gap between bridge decks remains. The reduction measure is placed at one end of the neighbouring girders. The considered earthquakes are the 1994 Northridge earthquake and the 1995 Kobe earthquake. For the nonlinear analysis a finite element method is used. The investigation shows that compared to the other measures the best reduction of the pounding force can be achieved with a friction device.
キーワード reduction measure earthquake response bridge girder pounding viscous damping friction
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 111
終了ページ 116
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313773
JaLCDOI 10.18926/fest/11467
タイトル(別表記) Rows-of-houses Preservation in Maniwa City of Katsuyama Area, Okayama Prefecture
フルテキストURL 012_141_149.pdf
著者 羅 燕娟| 市南 文一|
抄録 The aim of the study is to explain the present condition of the rows-of-houses preservation policy of Okayama Prefecture and to examine the samples in Maniwa city, Katsuyama area. Besides, the interview investigation was mainly conducted for residents in the rows-of-houses of preservation area in Katsuyama for giving the concluding remarks about the findings. The traditional private houses in Katsuyama preservation area were partially restored in the 1985-89 and 1993-97 fiscal years by the subsidy from the prefecture. Furthermore, Katsuyamacho at that time founded the subsidy system for maintaining rows-of-houses preservation area (about 25.3 ha) independently in 1993, restored 9 private houses, and made and updated the shop curtains; "Noren". In the point of the observable items, the ground warehouse of structures with gable tile-roofing is visible and it is also in use. Moreover, a latticed window structure, a white wall, and a sea cucumber wall constitute the charm of new rows-of-houses. A stone pavement follows on the riverside at the site facing the Asahi River. There are the remains of an arrival-and-departure place of a flat boat and a brewery, etc. According to our investigation in 2002, the residents were satisfied with "It is easy to live quietly", "the beauty of a natural landscape", "harmony of rows-of-houses and a shop curtain", and "a historical atmosphere", but the recognition of "the creation of active rows-of-houses" was unexpectedly low. Therefore, cooperation between residents and informational sharing are much more required. Consequently, since both the visitors and the residents are satisfied very much with each facilities, such as the whole rows-of-houses, a samurai residence, a brewery, and a restaurant etc., town planning is well organized and attained the priority targets.
キーワード Rows-of-houses Preservation Katsuyama area Visitors Residents
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2007-03-15
12巻
1号
開始ページ 141
終了ページ 149
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313778
著者 佐藤 園| 河原 浩子| 平田 美智子|
発行日 2008-02-25
出版物タイトル 岡山大学教育学部研究集録
137巻
1号
資料タイプ 紀要論文
JaLCDOI 10.18926/fest/11458
タイトル(別表記) Numerical Simulation of a Flow Induced by a Pumping-up Facilities in a Lake
フルテキストURL 009_065_068.pdf
著者 水藤 寛| 苗加 昌克|
抄録 The purpose of this research is solving the flow in a lake which caused by a fan who rotates at the low speed set on the water surface for the purpose of water quality purification of a lake. Although it is shown clearly by various experiments that the water quality in a lake improved by operation of this kind of equipment, the mechanism of the flow was not fully understood. In this research simulation of the flow which was caused by this equipment was carried out numerically, and the aspect of the flow corresponding to various conditions or the form of a lake was investigated.
キーワード Fluid dynamics Numerical simulation
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 65
終了ページ 68
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313524
JaLCDOI 10.18926/fest/11457
タイトル(別表記) Study on Effects of the Density Current Generator by Experiment and Measurement
フルテキストURL 009_059_064.pdf
著者 渡辺 雅二| 山磨 敏夫|
抄録 The density current generator (Manufacturer: Nakashima Propeller Co., Ltd., Patent owner: Hitachi Metals, Ltd.) is designed to generate vertical circulation over a wide water area harnessing the density current effect. We present some experimental results that we obtained using a float equipped with a GPS unit to study water flows generated by a density current generator unit set in S-Reservoir in Okayama Prefecture. We also present some measured results concerning the water temperature around the unit. We discuss its effects observing the experimental results and the measured results.
キーワード density current stratification water environment
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 59
終了ページ 64
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313754
JaLCDOI 10.18926/fest/11456
フルテキストURL 009_053_058.pdf
著者 Numaguchi Satoshi| Med Mahmoud Ould Med Lemine| 渡辺 雅二|
抄録 We study a wind-generated current in Kojima Lake. We introduce an experimantal result which was obtained using a float equipped with a GPS unit. We also present a result of numerical study in which a result from finite element analysis of flow is applied to the momentum equation of the float to simulate its motion.
キーワード water environment global positioning system numerical simulation
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 53
終了ページ 58
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313924
JaLCDOI 10.18926/fest/11453
フルテキストURL 009_037_044.pdf
著者 Sung Jimin| 田中 豊|
抄録 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.
キーワード Cox regression Influence function Local influence Influential Subsets Cox-Snell residuals Martingale residual Deviance residual
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 37
終了ページ 44
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313595
JaLCDOI 10.18926/fest/11452
フルテキストURL 011_015_018.pdf
著者 渡辺 雅二| Liu Ying| Wang Ming Jun|
抄録 Numerical techniques to simulate tsunamis are described. Partial differential equations are reduced to a system of ordinary differential equations to which appropriate numerical solvers can be applied. The techniques are illustrated with an example in which tsunami due to an earthquake is simulated.
キーワード tsunami finite elements numerical simulation
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2006-03-15
11巻
1号
開始ページ 15
終了ページ 18
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002314045
JaLCDOI 10.18926/fest/11451
フルテキストURL 009_027_036.pdf
著者 中島 惇|
抄録 Let A/R be a ring extension and P a subset of Hom(A(R),A(R)). In his paper [5], K. Kishimoto introduced the notion of a P-Galois extension and gave several basic properties of these extensions. The author showed that these extensions are closely related to Hopf Galois extensions and the structure of quadratic or cubic P-Galois extensions over a field were given in [9] and [10]. Recently,the author classify commutative quartic P-Galois extensions over a field of characteristic not 2 in [11]. Continuing [11], we treat commutative quartic P-Galois extensions over a field of characteristic 2.
キーワード Cyclic extension P-Galois extension Hopf Galois extension
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 27
終了ページ 36
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313989
JaLCDOI 10.18926/fest/11448
フルテキストURL 009_009_017.pdf
著者 Setiawan Agus| 垂水 共之|
抄録 Small Area Estimation (SAE) is the process of using statistical models to link survey outcome variables to a set of predictor variables known for small domains, in order to predict domain-level estimates. The need for detailed statistics on small area is constantly increasing. Small area estimation is becoming important in survey sampling due to a growing demand for reliable small area statistics from both public and private sectors. Bayesian hierarchical models provide a convenient framework for disease mapping and geographical correlation studies. Computation may be carried out using the freely-available WinBUGS software. Two approaches prediction to estimate total patient in small area i will be presented. For the purpose of this paper, the small area estimation in this context use data of Indnesia's population based on the 2000 census for the population of Jakarta and data of patient diarrhea from District Health Service of Jakarta. We interest to predict total patient of diarrhea as variable of interest and data population as auxiliary data from unsample for each small area.
キーワード Auxiliary data Population density Sample survey Small area estimation WinBUGS
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 9
終了ページ 17
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002313784
JaLCDOI 10.18926/fest/11447
タイトル(別表記) Development of the Mesh Data Analysis System
フルテキストURL 009_001_007.pdf
著者 牛 冬慧| 垂水 共之|
抄録 Area mesh statistics is a kind of small area statistics. The area mesh data of Japan can be created in a lot of way and many of them can be downloaded, for example, from the land's value information service which is provided by Ministry of Land, Infrastructure and Transport of Japan. We developed database of these area mesh data. By using mesh navigator software (Makita Naoki, 1997), which needs to run on ProAtlas2000 and Microsoft Access2000, we displayed the mesh data on the map. What visualized on the map is very convenient. For extending the advantages of area mesh data to spatial geographical statistics, we used PostgreSQL to develop a new database of mesh data. We also develop some programs in Delphi for the analysis of area mesh data, such as Histogram, Echelon analysis, and etc.
キーワード Area mesh data PostgreSQL PQCompo ProAtlas2000
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2004-02-27
9巻
1号
開始ページ 1
終了ページ 7
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313385
JaLCDOI 10.18926/fest/11445
タイトル(別表記) Emulsification Properties of Poly(lactide-block-ethylene glycol-block-lacticide) Block Polymers
フルテキストURL 011_107_110.pdf
著者 松本 康夫| 北村 吉朗| 吉澤 秀和|
抄録 Homo-and copolymers of poly(lactic acid) have gathered much attention because of their biodegradability and biocompatibility. They have numerous applications in the biomedical field due to their potential. In their polymers, we are interested in poly(lactic acid)-poly(ethylene glycol) block polymers. The amphiphilic triblock copolymers, poly(DL-lactic acid)-poly(ethylene glycol)-poly(DL-lactic acid)(PLEL), have known to be surface-active ability. Therefore, we have studied emulsification properties with the polymers. PLEL were prepared by ring-opening copolymerization of DL-lactide and poly(ethylene glycol) catalyzed by stannous 2-ethylhexanoate. We prepared ethyl acetate-water-PLEL emulsion and applied this emulsion to biodegradable polymer scaffolds. PLA scaffolds were prepared by an emulsion freeze-drying method. These scaffolds were made by varying water weight fraction. Their surface pore size became larger with increasing water weight fraction.
キーワード Poly(lactic acid) Poly(ethylene glycol) Biodegradable polymer Tissue Engineering Surfactant
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2006-03-15
11巻
1号
開始ページ 107
終了ページ 110
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002314040
JaLCDOI 10.18926/fest/11444
タイトル(別表記) Synthesis of Novel Temperature-responsive Polymer Gel of Poly(aspartic acid)s
フルテキストURL 011_103_106.pdf
著者 上原 広樹| 谷元 史明| 北村 吉朗| 吉澤 秀和|
抄録 Recently, thermo-responsive polymer gels have been studied in various research fields such as drug delivery system. One of represetative thermo-responsive polymer gels is poly(N-isopropylacrylamide) gel (PNIPAAm) that has a rapid and reversible volume phase transition. However, PNIPAAm is not biodegradable, resulting in limitation of its use in medical fields. Novel thermo-responsive polymer gel was prepared by closslinking of isopropylamine modified poly(succinimide) (IPA-PSI) (Poly[α,β -(DL-aspartate isopropyl amide)-co-(succinimide)]) with hexamethylenediamine. Because of peptide bonds in backbone, therefore, it is expected to possess biodegradability and biocompatibility. These gels changed their volume in response to change of environment such as temperature, pH and concentration of salt in water. Crosslinkage density and substitution degree of IPA-PSI affected volume phase transition bahavior of the gel.
キーワード Thermo-responsive polymer gel Biodegradable polymer Poly(aspartic acid) Lower Critical Solution Temperature(LCST) Drug delivery system(DDS)
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2006-03-15
11巻
1号
開始ページ 103
終了ページ 106
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313620