検索結果 128 件
| JaLCDOI | 10.18926/15763 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_15_1_101.pdf |
| 著者 | Taniguchi Takeo| Numata Katsu| |
| 抄録 | In this paper the fill-in minimization problem which arises at the application of the sparse matrix method for a large sparse set of linear equations is discussed from the graph-theoretic viewpoint and also through the numerical experiments. Therefore, this investigation consists of two parts, and in the former part the author shows, at first, that the elimination process of a sparse matrix is equivalently replaced to the vertex eliminations for a graph obtained from the matrix, and by use of some concepts in the theory of graph he proves that the vertex elimination process for the minimum fill-in is equivalent to the vertex eliminations for vertices in each subgraph which is obtained by the appropriate dissection of whole graph, and that there are only two types of vertex eliminations through the process. This results in the proposal of a new model of the vertex elimination process. The latter part of this investigation is used for the verification of the results from the theoretic investigation. Through the numerical experiments he concludes that the new model of the vertex elimination process is valid, at least, for a graph like a regular finite element mesh. Furthermore, he shows that this model coincides with Nested Dissection Method which can give the minimum value of fill-in, at present. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1980-11-29 |
| 巻 | 15巻 |
| 号 | 1号 |
| 開始ページ | 101 |
| 終了ページ | 110 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307966 |
| JaLCDOI | 10.18926/15744 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_14_1_95.pdf |
| 著者 | Nishigaki Makoto| Kono Iichiro| |
| 抄録 | In order to apply the numerical method to practical groundwater flow problem in the field, the hydraulic properties must be estimated. In this paper, new methods of analyzing drawdown tests were developed and illustrated with some examples to determine hydraulic properties of aquifer. Drawdown tests sometimes have to be performed near the boundary of the aquifer or in the much groundwater supplied aquifer. In such instances, the assumption that the aquifer is of infinite areal extent is no longer valid. Therefore the analytical solutions of unsteady flow due to drawdown test are derived in the conception of "Island Model" that the shape of groundwater level is fixed by the circular water supply which is equilibrium with the pumping rate. By using these solutions, new methods of analyzing drawdown tests which are performed in a confined aquifer and an unconfined aquifer were given respectively and the effect of influence region was evaluated. The example analysis to determine permeability and storage coefficient were shown. As the results,the propriety of the solutions is verified comparing the analytical results with the drawdown test data taken from a real aquifer project. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1979-12-01 |
| 巻 | 14巻 |
| 号 | 1号 |
| 開始ページ | 95 |
| 終了ページ | 126 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307822 |
| JaLCDOI | 10.18926/15742 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_14_1_61.pdf |
| 著者 | Kono Iichiro| Nishigaki Makoto| |
| 抄録 | The purposes of this paper are primarily to research on behavior of groundwater flow in saturated and unsaturated zone and to develop the most effective methods for solving groundwater flow problems related to civil engineering practice. The mathematical model provides a finite element solution to two- or threedimensional problems involving transient flow in the saturated and unsaturated domains of nonhomogeneous, anisotropic porous media. Before progressing into the various levels of applications the input data and boundary conditions are discussed and evaluated. To demonstrate the flexibility of the finite element approach and its capability in treating complex situations which are often encountered in the field, the groundwater flow through sand bank at flood water levels and the flow through aquifer due to an excavation were analyzed. As the results there were good qualitative agreements between the numerical results and the informations received. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1979-12-01 |
| 巻 | 14巻 |
| 号 | 1号 |
| 開始ページ | 61 |
| 終了ページ | 94 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307580 |
| JaLCDOI | 10.18926/15556 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_116.pdf |
| 著者 | Takamatsu Takeichiro| Sayama Hayatoshi| |
| 抄録 | The identification or model building of system is the important problem for the dynamic optimization of chemical plant and it is desired that this mathematical model can be determined as quickly and as exactly as possible from experimental or operating data. Recently the identification of linear system has been studied, but there have been few papers on nonlinear systems. Especially, no approaches can be found to identify effectively a chemical reaction process which is a nonlinear and nonisothermal system. Except for the case in which the linearized model is enough to represent the approximate dynamic behaviour of the plant, system should be directly represented by nonlinear mathematical model in general. In this paper, the gradient method was applied to identify a nonlinear system. In this method, the parameters to be chosen optimally are regarded as timeinvariant control variables and they are numerically determined by using a high speed digital computer (KDC-I). As a numerical example, we choose a continuous stirred tank reactor with the first order exothermic reaction and show the procedure to determine the three parameters, that is, the order of reaction, the values of activation energy and frequency factor. It should be emphasized that this approach makes it possible to construct the mathematical model of nonisothermal chemical reaction processes only from input and output data. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 116 |
| 終了ページ | 119 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307194 |
| JaLCDOI | 10.18926/15555 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_110.pdf |
| 著者 | Takamatsu Takeiciro| Sayama Hayatoshi| Tonoike Takao| |
| 抄録 | The batch chemical reaction is chosen as the process model to be optimized and the rate constants are functions of pressure only, as the reactions are assumed to occur isothermally. The time optimal control problem considered here means to determine the minimum time path from the given initial compositions to desired final compositions by manipulating the process pressure. A gradient method or a steepest-ascent method is applied to determine the control variable program by using the high speed digital computer. Numerical solutions are presented for the following three cases: (1) no constraint on the operating pressure ...... open and matched terminal constraint. (2) constraint on the operating pressure ...... open terminal constraint. (3) constant operating pressure ...... open terminal constraint. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 110 |
| 終了ページ | 115 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307978 |
| JaLCDOI | 10.18926/15508 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_25_2_25.pdf |
| 著者 | Nsunge Felix Chintu| 冨田 栄二| 浜本 嘉輔| |
| 抄録 | A suddenly started cold methane gas jet issuing from a 1 mm diameter orifice into still air at Mach one has been predicted using the two-equation, high Reynolds number version of k-ε turbulence model and SIMPLE algorithm which employs so called primitive variables and a hybrid scheme for treating combined diffusion and convection. Global trends of predicted radial distributions of velocity, temperature, methane concentration in the steady rear part of the transient jet and axial jet tip penetration compare reasonably well with universal profiles representing measurement for the steady jet particularly in the fully developed turbulent core and semi-empirical relation for the transient jet respectively. The prediction scheme has shown reasonably good accuracy especially in prediction of main flow parameters of a transient, high speed compressible gas jet issuing into a dissimilar surrounding gas(binary gas mixture jet). |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1991-03-28 |
| 巻 | 25巻 |
| 号 | 2号 |
| 開始ページ | 25 |
| 終了ページ | 38 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307676 |
| JaLCDOI | 10.18926/15487 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_24_1_135.pdf |
| 著者 | 谷口 健男| 末次 剛| Iwasaki Masaki| |
| 抄録 | This paper describes the numerical simulation method of the multi-crack propagation behaviour which appear in a part of civil engineering structures with complex geometrical configuration like steel bridges. Proposed method can treat the interaction of several cracks which locate in a short distance each other, and the process of their growth can be grasped. The method is based on the finite element method, and the linear fracture mechanics is assumed. Proposed method includes following tools for the simulation of the crack propagation behaviour: Automatic Mesh Generators for 3-D, 2-D structural analysis, and 2-D crack propagation analysis, Multi-level Structural Analysis Technique, Estimation Method of the crack growth and the angle of cracks and the modelling method of traffic loadings. The validity of the method is investigated by comparing the result to the experimental one. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1989-11-29 |
| 巻 | 24巻 |
| 号 | 1号 |
| 開始ページ | 135 |
| 終了ページ | 152 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307854 |
| JaLCDOI | 10.18926/15440 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_1_71.pdf |
| 著者 | 西垣 誠| Sudinda Teddy| Hishiya Tomoyuki| 河野 伊一郎| |
| 抄録 | In this paper, method of Eulerian Lagrangian numerical analysis is used to described Advection-Dispersion phenomena. The influence of concentration to the density of fluid is considered. A laboratory model of a two dimensional confined aquifer containing an isotropic, homogeneous porous medium (Hosokawa et.al 1989) was used to validate the applicability of Advection-Dispersion of numerical analysis with steady and unsteady state condition [1]. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1993-11-30 |
| 巻 | 28巻 |
| 号 | 1号 |
| 開始ページ | 71 |
| 終了ページ | 85 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307975 |
| JaLCDOI | 10.18926/15421 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_26_1_75.pdf |
| 著者 | Myojin Sho| Noguchi Hisahumi| Yamada Masahito| |
| 抄録 | Four radials-single ring urban expressway network is priced and, simultaneously, optimized in its spatial formation under the constraint that a balance must be kept of revenue and expenditure. The model consists of three sub-models: road system, car trip generation-attraction and traffic diversion. Network performance is assessed on two criteria; trip number criterion on which the aggregate number of car trips diverted onto expressway is maximized and travel hour criterion on which the travel hours of car trips integrated over the road system; surface and expressway, is minimized. Optimization is tried by numerical calculation for some sets of parameters in the model. The results are summarized as follows; (1) simultaneous optimization of price and spatial formation of the expressway network is possible on each of criteria, (2) trip number criterion produces lower pricing and smaller network while travel hour criterion does higher pricing and larger network, (3) optimum solution lies in a delicate relation of price and spatial network formation that comes from the balance constraint. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1991-11-30 |
| 巻 | 26巻 |
| 号 | 1号 |
| 開始ページ | 75 |
| 終了ページ | 94 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307318 |
| JaLCDOI | 10.18926/15412 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_26_1_21.pdf |
| 著者 | 野津 滋| 稲葉 英男| |
| 抄録 | A numerical study is performed for the facilitated diffusion of carbon-dioxide in an ultrapure water film flowing downward along a vertical surface. The model adopted for the present work includes the effects of the reaction rate for the hydration of CO(2)in a liquid. Comparison of the total concentration of CO(2) for different film thickness indicates that the effects of the hydration is more remarkable for the thinner liquid film. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1991-11-30 |
| 巻 | 26巻 |
| 号 | 1号 |
| 開始ページ | 21 |
| 終了ページ | 26 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307958 |
| JaLCDOI | 10.18926/15403 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_27_2_19.pdf |
| 著者 | 奈良 重俊| 東辻 浩夫| |
| 抄録 | Numerical simulations of a single layer recurrent neural network model in which the synaptic connection matrix is formed by summing cyclic products of succesive patterns show that complex dynamics can occur with the reduction of a connectivity parameter which is the number of connection between neurons. The structure in these dynamics is discussed from the viewpoint of realizing complex function using complex dynamics. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1993-03-25 |
| 巻 | 27巻 |
| 号 | 2号 |
| 開始ページ | 19 |
| 終了ページ | 40 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307451 |
| JaLCDOI | 10.18926/15395 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_27_1_65.pdf |
| 著者 | 奈良 重俊| Hara Yuji| 東辻 浩夫| |
| 抄録 | Quantum mechnical electron wave transfer between two quantum wires which are weakly coupled via a thin potential barrier is considered. The total electronic states are calculated with both analytical ( no field case ) and numerical methods ( under applied electric fields ). The transfer efficiency is evaluated for several specified cases of geometrical structures, potential barrier heights and the externally applied electric field. Estimated trasfer time is of the order of one picosecond in typical mesoscopic structures. The model in this paper can be used to determine important structure parameters for experiments on electron directional coupler controled by external elctric field. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1992-11-25 |
| 巻 | 27巻 |
| 号 | 1号 |
| 開始ページ | 65 |
| 終了ページ | 79 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307405 |
| JaLCDOI | 10.18926/15372 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_30_1_25.pdf |
| 著者 | Sun Yonghao| 加川 幸雄| |
| 抄録 | Identification of unknown electric charges or sources distributed in space is made from the data observed over the field boundary using dual reciprocity boundary element models. The inhomogeneous term of the Poisson field can equivalently be expressed as the linear combination of the functions associated with the particular solutions to transform into Laplace equation. For the solution procedure, the variational formulation is employed, in which the regular boundary integral approach is incorporated to avoid the singularity. Numerical examples are presented to demonstrate the availability and the capability. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-12-28 |
| 巻 | 30巻 |
| 号 | 1号 |
| 開始ページ | 25 |
| 終了ページ | 33 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307314 |
| JaLCDOI | 10.18926/15221 |
|---|---|
| タイトル（別表記） | Recent trend of research on the adaptive response induced by low dose radiation and its significance |
| フルテキストURL | 013_1_007_015.pdf |
| 著者 | 楠原 俊昌| 花元 克巳| 山岡 聖典| |
| 抄録 | 本総説は,低線量放射線に対する生体の適応応答(以下,適応応答)に関してその効果を含む最近の研究動向,さらに放射線防護との関係についてまとめたものである｡特にこの分野で最も検討が進んでいる｢低線量放射線照射の生物学的影響｣に関する国際研究組織(BELLE)での動向を中心に報告するものである｡即ち,ヒトと自然放射線との共存などヒトの生活環境と適応応答について,適応応答の短期的･長期的効果など適応応答の効果とその生物学的意義について言及した｡次に,適応応答の医療などへの応用の可能性について,また,適応応答と放射線防護との関係についても言及した｡ここで,低線量放射線にはヒトへの有益な効果があるとの多くの報告例がある半面,放射線防護の面では微量放射線でも危険とする考え方がその根拠にあることがわかった｡このため,今後は更なる低線量放射線の生体影響研究を進めるとともに,両者の間の隙間をなくす現実的･合理的な対応が求められている｡ |
| キーワード | 低線量放射線 (low dose radiation) 低濃度化学物質 (low dose chemicals) 適応応答 (adaptive response) 放射線ホルミシス (radiation hormesis) 放射線防護 (radiation protection) |
| 出版物タイトル | 岡山大学医学部保健学科紀要 |
| 発行日 | 2002-12-25 |
| 巻 | 13巻 |
| 号 | 1号 |
| 開始ページ | 7 |
| 終了ページ | 15 |
| ISSN | 1345-0948 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002307469 |
| JaLCDOI | 10.18926/15179 |
|---|---|
| タイトル（別表記） | Requiring factors in structural model of the blood vesselfor the principle analysis of measurement of blood pressure waveform by applanation tonometry. |
| フルテキストURL | 016_1_009_020.pdf |
| 著者 | 北脇 知己| 岡 久雄| |
| 抄録 | 生体内の血圧脈波を非侵襲的に計測する手法として,｢トノメトリ法｣が知られており,近年,この計測手法を用いて得られた血圧脈波波形から,動脈硬化などの循環器系疾患のスクリーニングや予防診断に役立てようという動きが活発である｡しかしながら,組織内の血管を圧迫した場合の血管の変形挙動については,十分な解析は行われていない｡そこで本研究では,生体中のトノメトリ状態を解析可能な数値解析モデルを構築することを目的とした｡この結果, トノメトリ法による血圧脈波計測の原理解析を行うための血管断面構造の応力解析モデルには,以下の要件が求められることが明らかとなった｡・センサ部と皮膚表面はそれぞれ独立な要素としてモデル化し,これらの接触部においては摩擦を考慮しなければならない｡・応力の定量的な解析を行うためには,素材の非線形的な機械的特性を考慮する必要がある｡さらに,実験結果と計算結果を一致させるためには,初期形状を正確にモデル化することが必要であることがわかった｡ |
| キーワード | トノメトリ法 (Applanation tonometry) 有限要素法 (Finite Element Model) 数値解析モデル (Numerical calculation) 血圧計測 (Blood pressure measurement) |
| 出版物タイトル | 岡山大学医学部保健学科紀要 |
| 発行日 | 2005-12-25 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 9 |
| 終了ページ | 20 |
| ISSN | 1345-0948 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002307172 |
| JaLCDOI | 10.18926/15166 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_31_1_19.pdf |
| 著者 | 東辻 浩夫| 岸本 篤也| 東辻 千枝子| |
| 抄録 | As a model of dusty plasmas in external fields, Yuka.wa system in a one-dimensional external field is analyzed by molecular dynamics simulations and theoretical approaches. It is shown that particles form clear thin layers (sheets) at low temperatures and the number of layers changes discretely with characteristic parameters of the system, accompanying the rearrangements of whole system from nearly equipartitioned layers to also nearly equipartitioned layers. The number, positions and populations of layers are obtained as functions of characteristic parameters. The shell (sheet) model which has been successful for confined one-component plasmas is extended to this system and results of numerical experiments are reproduced to a good accuracy. The effect of cohesive energy in each layer is of essential importance to reproduce discrete changes in the number of sheets. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1996-12-27 |
| 巻 | 31巻 |
| 号 | 1号 |
| 開始ページ | 19 |
| 終了ページ | 33 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307616 |
| 著者 | A.I.. ABDUL| 村田 厚生| A.E. OLULEYE| |
|---|---|
| 発行日 | 2008-12-11 |
| 出版物タイトル | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| 巻 | 2008巻 |
| 号 | 1号 |
| 資料タイプ | 会議発表論文 |
| JaLCDOI | 10.18926/14098 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_40_1_16.pdf |
| 著者 | 阿部 快洋| 小西 正躬| 西 竜志| 今井 純| |
| 抄録 | In this study, auto tuning of PID control gains in hot strip looper controller is made based on RNN model. Neuro emulator is employed to model the characteristics of looper dynamics. Combining neuro emulator and RNN model, auto tuning system of PID control gains is constructed. As the inputs to RNN, plural evaluation functions which reflect individual preference of human experts. Further, Self learning mechamism is embeded to RNN model which enables adaptation to the change in rolling chracteristics. Through numerical experiments, the effect of the proposed method is ascertained. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2006-01 |
| 巻 | 40巻 |
| 号 | 1号 |
| 開始ページ | 16 |
| 終了ページ | 22 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308615 |
| JaLCDOI | 10.18926/14083 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_41_1_44.pdf |
| 著者 | 前野 良太| 小西 正躬| 今井 純| |
| 抄録 | Petri net model is a frequently-used versatile tool which can represent a widely discrete event system. However, when the scale of the system becomes large, the calculation time for solving optimal problem (optimal firing sequence problem) is markedly increased. In this paper, we propose an approximation method that achieves the efficiency improvement of the solution by decomposing the Petri net for solving the optimal firing sequence problem. A timed Petri Net is decomposed into several subnets in which the optimal firing sequence for each subnet is solved by Dijkstra’s algorithm in polynomial computational complexity. The effectivity of the proposed method is verified by numerical experiments for the flowshop schedule problem. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2007-01 |
| 巻 | 41巻 |
| 号 | 1号 |
| 開始ページ | 44 |
| 終了ページ | 51 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308128 |
| JaLCDOI | 10.18926/14064 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_42_79.pdf |
| 著者 | Notsu Tadafumi| 小西 正躬| 今井 純| |
| 抄録 | The operations of a reactor furnace such as a blast furnace still depend on the experiences and intuitions of skilled operators due to the complexity of internal furnace phenomena and high temperature. There is a great demand for stable operations under the circumstances of a decrease in the number of skilled operators and difficulty in technology inheritance. This paper aims to construct mathematical description for control of a reactor furnace. Further, the linear-quadratic-gaussian control system for a reactor furnace is proposed, which estimates inner furnace temperature distribution using measured data near furnace wall. Temperature distribution of a furnace is controlled based on the estimated inner temperature distribution changing of boundary conditions of a furnace. The practicability of the proposed control method was checked through numerical experiments. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2008-01 |
| 巻 | 42巻 |
| 号 | 1号 |
| 開始ページ | 79 |
| 終了ページ | 90 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308624 |