検索結果 2449 件
| JaLCDOI | 10.18926/11666 |
|---|---|
| タイトル（別表記） | Trial of a mass screening survery for detecting early pancreatic cancer |
| フルテキストURL | 062_005_010.pdf |
| 著者 | 松本 秀次| 越智 浩二| 田中 淳太郎| 妹尾 敏伸| 原田 英雄| |
| 抄録 | 早期膵癌を発見するためのスクリーニング法を確立するため，1986年6月1日から1990年6月30日までの期間のprospective studyを行った。対象は，人間ドックを目的として来院した患者を主とする三朝分院の外来患者1,748名である。一次スクリーニング検査として，血清アミラーゼ，エラスターゼI，腹部超音波検査（US）を施行し155名の要精検者が得られ，要精検率は8.9％であった。155名の要精検者に，二次検査として，USの再精査，ERCP，腹部CTを施行した。その結果，早期膵癌患者1名，進行膵癌患者4名を発見し，膵癌発見率は0．29％と良好な成績であった。加えて，一次スクリーニングの検査項目を限定することによりcost－benifitを改善することができた。発見された膵癌患者の3名は60歳代であった。また，年代別要精検率は加齢とともに上昇した。1年以後にfollow-up検査を受けた患者の数は641名でfoilow－up率は36．7％であり，そのなかから膵癌は発見されなかった。60歳代のfollow－up率は40歳以上60歳未満のそれにくらべて有意の低値をとった。早期膵癌の見逃しを少なくするためには，今後，60歳代を中心とする患者のfollow－up率をさらに高めることが必要である。 |
| キーワード | 膵集検 (Mass screening for pancreatic cancer) 膵癌の早期診断 (Early diagnosis of pancreatic cancer) 早期膵癌 (Small pancreatic cancer) |
| 出版物タイトル | 環境病態研報告 |
| 発行日 | 1991-08 |
| 巻 | 62巻 |
| 開始ページ | 5 |
| 終了ページ | 10 |
| ISSN | 0913-3771 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313927 |
| 著者 | 岡山大学農学部附属農場| |
|---|---|
| 発行日 | 2001-03-30 |
| 出版物タイトル | 岡山大学農学部農場報告 |
| 巻 | 23巻 |
| 資料タイプ | その他 |
| JaLCDOI | 10.18926/fest/11636 |
|---|---|
| フルテキストURL | 001_181_192.pdf |
| 著者 | 藤井 弘章| 成田 睦也| Cheng Chin Thai| 島田 清| 西村 伸一| Ofori Emanual| |
| 抄録 | This paper describes the prediction of seepage in the impervious zones of six embankment dams by seepage analysis. In addition, by making use of the available monitored pore water pressure data of the first filling of reservoir, back analysis was carried out to estimate the best fit seepage parameters. The estimated parameters were used for further prediction of pore water pressures in subsequent monitored durations with reasonable accuracy. The accuracy of prediction was evaluated quantitatively by the prediction difference and error index. The results show that the error indices in the upstream sides of the impervious zones are smaller than those in the downstream sides. |
| キーワード | Unsaturated soils fill dams pore water pressure back analysis FEM |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 181 |
| 終了ページ | 192 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313591 |
| JaLCDOI | 10.18926/fest/11622 |
|---|---|
| フルテキストURL | 001_121_133.pdf |
| 著者 | 前野 詩朗| 山本 哲雄| 名合 宏之| |
| 抄録 | In this paper the theoretical procedure to analyze the dynamic behavior of highly saturated sand bed around a cylindrical block under the cyclic loading of water pressure is developed. The fundamental equations were derived for the axially symmetric coordinates. Then, the finite element equations were developed to solve these fundamental equations numerically. Finally, the numerical method was verified by experiments. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 121 |
| 終了ページ | 133 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313416 |
| JaLCDOI | 10.18926/fest/11619 |
|---|---|
| フルテキストURL | 001_115_119.pdf |
| 著者 | 竹下 祐二| 河野 伊一郎| |
| 抄録 | The unsaturated soil hydraulic properties are essential data to predict the seepage behavior in the vadose zone. In this paper, a new experimental methodology of determining unsaturated soil hydraulic properties is proposed. The soil hydraulic properties are assumed to be represented by van Genuchten's closed-form expressions. Unknown parameters of this model are identified by using a optimization techniques. The optimization approach is nonlinear least-squares algorithm in corporating finite element analysis of one-dimensional nonsteady seepage flow. The advantages of the methods are in the possibility of identifying the optimal unsaturated soil hydraulic properties and diminishing experimental time. To evaluate availability of our proposed method, experimental results which are determined by proposed methods and conventional method are compared for decomposed granite soil. |
| キーワード | unsaturated hydraulic properties back analysis laboratory test groundwater |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 115 |
| 終了ページ | 119 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313807 |
| JaLCDOI | 10.18926/fest/11615 |
|---|---|
| フルテキストURL | 001_077_089.pdf |
| 著者 | 大久保 賢治| 森川 浩| 紀本 岳志| 田中 祐志| |
| 抄録 | Thermal 'staircase', a layer of constant temperature between the sheets of the steep gradients, was formed in the seasonal thermocline, which was 2.5 m above the bottom at a point of 18 m deep on the boundary slope in Lake Biwa. Following a sediment resuspension event when a moderate onshore wind blew, bed materials should be suspended up to the thermocline, then settled down forming a staircase above the turbid intrusion. Comparing the observed downward hear flux with the settling flux of sediment, it was found that double-diffusive convection would play an important role on the formation of the whole structure consisting of the staircase and turbid intrusion along with chemical anomalies and dense population of phytoplankters, which were fed by nutrients supplied from the bottom sediment under a typical condition of drought. Laboratory experiments were conducted to demonstrate the thermal and sediment processes in the stratified lake. Resuspension process due to surface and internal waves was examined using a tank with a sloping bottom, while the settling process was investigated by using a deep, diffusive tank. Formative process and scales of the staircase and intrusion were discussed relating with the intensity of resuspension and the buoyancy fluxes. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 77 |
| 終了ページ | 89 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313571 |
| JaLCDOI | 10.18926/fest/11611 |
|---|---|
| フルテキストURL | 001_065_076.pdf |
| 著者 | 金 鉉彬| 田中 豊| |
| 抄録 | Partial least squares linear discriminant function (PLSD) as well as ordinary linear discriminant function (LDF) are used in pattern recognition analysis of writer identification based on are patterns extracted from the writings written with Hangul letters by 20 Koreans. Also a simulation study is performed using the Monte Carlo method to compare the performances of PLSD and LDF. PLSD showed remarkably better performance than LDF in the Monte Calro study and slightly better performance in the analysis of the real pattern recognition data. |
| キーワード | Writer identification Arc patterns Linear discriminant function Partial least squares |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 65 |
| 終了ページ | 76 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002314147 |
| JaLCDOI | 10.18926/fest/11608 |
|---|---|
| フルテキストURL | 001_043_046.pdf |
| 著者 | 梶原 毅| |
| 抄録 | This paper contains some remarks supplementary to the previous paper [KW] concerning Hilbert C*-bimodules given from bundle constructions and a example given by this construction concerning the product type action on C*-algebras. |
| キーワード | Hilbert bimodule bundle tensor 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 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 43 |
| 終了ページ | 46 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313825 |
| JaLCDOI | 10.18926/fest/11602 |
|---|---|
| フルテキストURL | 001_015_020.pdf |
| 著者 | 中島 惇| |
| 抄録 | Let A be a bialgebra and let S be a right A-comodule algebra which has an A-comodule subalgebra T with common identity. We show that if S is a separable extension of T, then for a left A-module algebra K, K♯S is a separable extension of K♯T. Similar result holds for left A-module algebras and right A-comodule algebras. |
| キーワード | Separable extension smash product module algebra and comodule algebra |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 15 |
| 終了ページ | 20 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313954 |
| JaLCDOI | 10.18926/fest/11593 |
|---|---|
| フルテキストURL | 002_001_008.pdf |
| 著者 | 洞 彰人| |
| 抄録 | An aspect of the cut-off phenomenon is reviewed. It is a sort of critical phenomenon observed in a wide variety of diffusion. We introduce a framework in which such a phenomenon can be understood and analyzed in a rigorous manner. We illustrate the mechanism with some concrete models. |
| キーワード | cut-off phenomenon critical time diffusion Markov chain on a graph symmetry |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1997-01-10 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 8 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313764 |
| 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 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 145 |
| 終了ページ | 156 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313359 |
| 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 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 127 |
| 終了ページ | 134 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313902 |
| 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 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 121 |
| 終了ページ | 126 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313884 |
| JaLCDOI | 10.18926/fest/11571 |
|---|---|
| フルテキストURL | 005_081_098.pdf |
| 著者 | Magda Waldemar| 前野 詩朗| 名合 宏之| |
| 抄録 | A dynamic response of a submarine pipeline buried in sandy seabed sediments to water loading generated by harmonically oscillating water-table vertical movements is examined in the present report experimentally and numerically. The aim of small-scale laboratory experiments was: (1) to record time-histories of pipeline vertical displacements, and (2) to observe a shape of slip surface of an overburden sand body involved in breakout together with the pipeline. A parametric study was carried out in order to investigate the influence of two meaningful factors, that is the depth of burial and the specific gravity of pipeline, on a gradual upward displacement of the pipeline. Based on a numerical finite-element 2D-analysis of the hydrodynamic pore pressure and effective stresses oscillations in the pipeline vicinity, an analysis of the pipeline stability potential is presented, in which all the experimental cases tested are verified. All important component forces (e.g., hydrodynamic uplift force) associated with floatation phenomenon of the buried submarine pipeline are considered and quantified. |
| キーワード | submarine pipeline surface waves pore pressure floatation stability |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 81 |
| 終了ページ | 98 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313700 |
| JaLCDOI | 10.18926/fest/11566 |
|---|---|
| フルテキストURL | 005_057_069.pdf |
| 著者 | 藤田 亮介| |
| 抄録 | Let G be a finite group, Y a finite connected G-CW-complex, and let Ⅱ(Y) denote G-poset (in the sense of Oliver-Petrie) associated to Y. They defined the abelian group Ω(G,Ⅱ(Y)) consisting of all equivalent classes of Ⅱ(Y)-complexes. They also defined the subgroup Φ(G,Ⅱ(Y)) related to Ⅱ(Y)-resolutions. We call Φ(G,Ⅱ(Y)) the resolution module of Y. Applying the Oliver-Petrie theory to the universal covering space Y, we obtain the group Ω(G,Ⅱ(Y)), where G is a certain extension of G by π(1)(Y). Then the canonical homomorphism ν : Ω(G,Ⅱ(Y))→ Ω(G,Ⅱ(Y)) induced by the projection Y → Y is an isomorphism. In this paper, for G = Z(p)×Z(q) we construct a finite G-CW-complex Y such that π(1)(Y) Zq and ν(Φ(G,Ⅱ(Y)) ≠ Φ(G,Ⅱ(Y)), where p and q are arbitrary distinct primes. |
| キーワード | G-CW-complex G-map G-poset |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 57 |
| 終了ページ | 69 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313951 |
| 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 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 37 |
| 終了ページ | 46 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313576 |
| JaLCDOI | 10.18926/fest/11561 |
|---|---|
| フルテキストURL | 005_035_046.pdf |
| 著者 | 崔 承培| 田中 豊| |
| 抄録 | Spatial data is analyzed in three stages of 1) estimating the variograms, 2) fitting a model for the estimated variograms and 3) predicting the value at unknown location based on the information at known locations (kriging). Recently, it has become a subject of interest to detect influential observations in these stages. Choi and Tanaka(1999) have derived influence functions in the above three stages and have proposed sensitivity analysis procedure. So far influence functions have only been derived for variograms by Gunst and Hartfield(1996). The present article makes a comparison of the performances between those influence functions for variograms derived by Choi and Tanaka(1999) and by Gunst and Hartfield(1996). A real numerical example is given to discuss the validity or usefulness of those influence functions. |
| キーワード | Stationary spatal data Influence function Sample variogram Median-polish 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 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 35 |
| 終了ページ | 46 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313332 |
| JaLCDOI | 10.18926/fest/11555 |
|---|---|
| タイトル（別表記） | Simulations of Heel Impact by Viscoelastic Models |
| フルテキストURL | 005_013_021.pdf |
| 著者 | 小久保 雅仁| 佐々木 徹| |
| 抄録 | The purpose of this study is to make some body models with viscoelastic model, to simulate the heel impact and to obtain the ground reaction force. In this paper, we build up body models of linear viscoelastic elements and mass elements to simulate heel impact. Here we consider the systems of linear differential equations numerically for the preparation of mathematical analysis in future. The simplest model with two mass elements is hardly able to simulate the heel impact if the rate of mass of elements is realistic. The models with more elements are suitable to simulate for actual rate of weight of body segments. The model with three mass elements makes it possible to guess the force to each body segment. |
| キーワード | Running Heel Impact Viscoelastic Model Biomechanics |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 13 |
| 終了ページ | 21 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313531 |
| JaLCDOI | 10.18926/fest/11553 |
|---|---|
| タイトル（別表記） | Mathematical analysis of pathogenesis of viral hepatitis. |
| フルテキストURL | 005_007_011.pdf |
| 著者 | 佐々木 徹| 梶原 毅| |
| 抄録 | Simple mathematical models are considered to explain the pathogenesis of viral hepatitis. Dynamics of populations of liver cells and two virus strains are analyzed qualitatively. This analysis suggests the possibility that the viral mutation causes the hepatitis from the state of carrier. |
| キーワード | hepatitis mathematical model mutation |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 7 |
| 終了ページ | 11 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313400 |
| 著者 | 永井 伊作| |
|---|---|
| 発行日 | 2007-03-23 |
| 出版物タイトル | |
| 資料タイプ | 学位論文 |