著者

黒川,隆夫

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.13, no.1, 1994-03-15

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Two methods of describing women's two-dimensional and three-dimensional (3D) body shape, and the related simulation studies are stated. The both methods fit a shape model to surface data of a woman, and utilize the obtained model parameters for shape description. In the first method the model is derived by adaptive subdivision of the body surface into tiny subregions that approximate the surface with high precision, and its parameters are the locations of vertices of the subregions. The second method is based on a B-spline surface fitting to the body surface. The coordinates of the resulting control points are the model parameters. Average body shape can easily be given by averaging corresponding parameter values over many women. Abdominal shape change during pregnancy is represented in the principal component space of body shape and possibility of shape change simulation is stated. The body surface can be transformed into planar development through the 3D B-spline model and related to designing patterns of a brassiere. Skin structure and color are also modeled to simulate real skin texture and to map it on the 3D model surface generated by the second method.

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.24, no.3, 2005-09-15

著者

佐藤 一誠

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.34, no.4, pp.228-233, 2015-12-15

著者

メンデス ラウル

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.8, no.4, pp.205-208, 1989-12-15

著者

早田 邦久

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.9, no.2, pp.79-86, 1990-06-15

著者

東 恒人 大倉 充 宮沢 一哲 藤田 和人

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.23, no.2, pp.134-141, 2004-06-15

被引用文献数

3

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In this paper, the wind ripple phenomenon; specifically, its generation, growth, disappearance, and ripple pattern, are described by reference to two parameters for a small-scale region consisting of 200×200 cells, in consideration of only the saltation and surface creep of sand. The first parameter is a coefficient allocated in a region measuring 3×3 cells, and its influence on a wind ripple pattern is clarified. The second parameter incorporates shear stress, the volume that sand jumps, the volume that sand rolls, and processing frequency. The influence of these parameters on the generation, growth, and disappearance of wind ripple is clarified.

著者

安原,幸生

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.26, no.4, 2007-12-15

---

Effective data visualization techniques are required in order to support efficient earthquake analysis. So far, earthquake analysis experts have only been able to imagine 3D structures from typical 2D expressions. However, we consider that experts would be able to understand 3D structures more acculately and efficiently by providing them with an intuitive and interactive 3D display system. We focused on immersive projection technology (IPT) systems, more specifically on the CAVE system, to develop an effective support system for earthquake data analysis. We also developed an IPT oriented bimanual input based control interface for the support system to enable intuitive user interaction with the 3D display. In addition, we implemented a support tool for estimating fault planes in the earthquake phenomenon using the Ordinary Kriging method.

著者

吉村,忍

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.33, no.3, 2014-09-15

著者

斎藤 正敏 神田 栄三郎 川島 光郎

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.9, no.3, pp.197-203, 1990

---

We find a simple solution method to calculate the solid-liquid interface under the thermal equilibrium condition. The boundary-fitted coordinate system is used in its procedure. This method is applied to two cases, one case that the interface temperature is equal to the melting temperature and the other that the interface temperature is unequal to that. In the former case we find the criterion of interface shapes through the calculation. That is, when m_LK_L>m_SK_S, the interface is convex toward the solid, when m_LK_L=m_SK_S, it is flat and when m_LK_L<m_SK_S, it is concave where m_L, m_S are the temperature slope on the wall along the liquid and that along the solid and K_L, K_S are the heat conductivity of liquid and that of solid. In the latter case the interface shapes are obtained when the grain-boundary exists, It is found that the interface shape is determined by the contact angle between crystals, Nash's dimensionless term and the ratio of K_L and K_S.

著者

川畑,正大

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.9, no.4, 1990-12-15

---

Utilizing optical fiber sensors and magnetic sensors, "DATAGLOVE" and "DATASUIT" are tools which evaluate wide ranging movements of the human body under real time. As such, they are receiving much attention as interfaces for artificial reality. At the exhibition hall, TEPIA, in Aoyama, Tokyo which has an aim of proliferating the latest in technology, the "HARP Exhibition" was held. The theme of this exhibition was "ADVANCED INTERFACES", focusing on new interface technology between man and machines. Utilizing a "DATASUIT" and "DATAGLOVE", movements of the human body are transferred to the computer as numerical data. This information is displayed, under real time, by a three dimensional CG system and a picture of animation of the movements displayed. This report focuses on this system.

著者

田中 覚 長谷川 恭子 徐 睿 岡本 篤志

出版者

小宮山印刷工業

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.34, no.2, pp.130-135, 2015-06

著者

今野,浩

出版者

日本シミュレーション学会

雑誌

シミュレーション

巻号頁・発行日

vol.6, no.1, 1987-03-15

著者

高橋 大志 寺野 隆雄

出版者

日鉄技術情報センタ-

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.21, no.2, pp.133-142, 2002-06-15

参考文献数

17

被引用文献数

2

---

GARCH (Generalized Autoregressive Conditional Hetero-scedasticity) is a macro level model to estimate the volatility of financial markets. Prospect theory explains micro level characteristics of decision making agents in socio-psychology. Although both concepts are very fundamental in the financial and economic domain and agent-based simulation, however, there are some contradictions among the assumptions of finance theories, agents' internal states, and the behaviors of real markets. In order to bridge the two macro- and micro-level concepts, this paper develops agent-based simulation models. The model consists of simple agents with rational and/or irrational decision making functionalities for investment. The experimental results using both rational and irrational agents have shown that the behaviors of the agents with the characteristics of prospect theory coincide with the estimation by GARCH model. These results have suggested the effectiveness of the agent-based approach to the domain.

著者

宮田 義郎

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.12, no.3, pp.195-202, 1993-09-15

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Harmonic Grammar is a PDP-based approach to formal theories of linguistic well-formedness, applicable to various kinds of linguistic well-formendness, e. g., phonological and syntactic. The central hypothesis is that a measure called "harmony", defined as a function of the state of a PDP network, can be used to model linguistic well-formedness. Harmonic Grammar is a two-level theory, involving a distributed, lower level PDP network whose relevant aggregate computational behavior is described by a local, higher level network which is isoharmonic to the former. The approach is designed to incorporate insights gained from symbolic analyses into the numerical framework of PDP networks, which then allow automatic learning of grammar, as a set of soft rules, from real linguistic data. An application to a syntactic problem of unaccusativity in French showed a coverage of this problematic data greatly exceeding that of any other formal account of which we are aware.

著者

町田 昌彦 奥村 雅彦 山田 進

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.31, no.1, pp.35-44, 2012-03-15

参考文献数

34

著者

石谷 久 伊奈 博

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.2, no.2, pp.114-121, 1983-07-15

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In a long range regional planning, it is required to realize appropriate geometrical allocations of infrastructures taking account of the population distribution and other geographical conditions in order to improve resident's conveniences or to secure minimum, living standards. For this purpose, authors developed a model for allocation of infrastructures for a district level based on numerical land informations, and presented its framework and some of applied results. In the paper, characteristics of investment allocation algorithm, which is the essential part of the model, are investigated in detail, and effects of allocating parameters on the resultant allocations for various conditions are investigated by simulation study. Allocations obtained by this algorithm and actual allocations are also compared for several facilities, and parameters to simulate the real situations are derived. In the peper, basic characteristics of the algorithm and some results of the comparative study are presented.

著者

今野 浩

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.6, no.1, pp.18-26, 1987-03-15

著者

杉本 健二 坂田 博 磯村 滋宏

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.16, no.2, pp.130-136, 1997-06-15

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Recent development in power semiconductor devices has made remarkable advances in power electronics. Among them, the gate turn-off thyristor (GTO) is one of the most important devices. And the double gate GTO has been proposed newly to realize low turn-off switching loss. Now, the computer simulation for the device is necessary to predict its characteristics. In this study, we use the finite element method and simulate switching characteristics in order to discuss the effects of double gate structure. The relations between storage time and timing of second gate pulse, second gate current, and the trade-off between on-state voltage and turn-off time were discussed.

著者

川野 聡恭 丸山 洋平

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.23, no.1, pp.36-41, 2004-03-15

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In the present paper, a simple model for electron-DNA scattering based on quantum theory is proposed. A mathematical formula for governing equations of e-DNA collisions is derived by use of the present model. A numerical code for solving the differential equations is developed. Furthermore, a simple prediction method based on the calculated total cross section is proposed for DNA double strand breaks. The comparison between the predictions and the previous experiments is made in detail for DNA double strand breaks. They are in qualitative agreement and the validity of the present model is confirmed.

著者

岸保 勘三郎

出版者

日本シミュレーション学会

雑誌

シミュレーション (ISSN:02859947)

巻号頁・発行日

vol.2, no.2, pp.69-76, 1983-07-15