著者

木村 和也 北山 哲士 山崎 光悦

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2005, no.15, pp.435-438, 2005-08-02

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Particle Swarm Optimization (PSO) is one of the multipoint search methods to find global or quasi-optimum of non-convex function. The important characteristics of multipoint search methods are diversity and centralization of search points. In this paper we propose Improvement model to aim at the diversity and the centralization. Through numerical examples, it is examined that indicator of parameter decision, diversity, centralization, and the search ability of the Improved PSO.

著者

青山 和浩 目黒 陽平 呉 〓曦 大泉 和也

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2012, pp._1106-1_-_1106-10_, 2012

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Japanese tourism industry is less competitive compared with other countries worldwide. One of the problems Japanese tourism companies have is that they do not have an efficient way to design package tours. This paper proposes a computer aided designing method of package tours that meets various tourists' favors while controlling cost. Tour service is modeled as network that comprises activity, place, capability and enabler. In this model, a tour is described as a flow of activities, which is linked with place, capability and enabler to attach the detailed information. There are three steps to design a tour lineup. First, the network is redesigned by adding improvement if necessary. Second, all possible sequences of activities (tour candidates) are extracted from the network, which are then combined as a lineup. Finally, after feasibility of the lineup is checked, it is evaluated from the viewpoints of tourists and providers. The proposed method has been verified by using developed prototype system through the case of Tokyo day tours.

著者

福田収一 江成 司 市川 真規 小池 敦

出版者

一般社団法人日本機械学会

雑誌

日本機械学会 第13回設計工学 システム部門講演会, 2003年11月 (ISSN:13480286)

巻号頁・発行日

pp.459-462, 2003

被引用文献数

2

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Extraction of emotion from facial expression and voice are attempted in this research. Although there are researches on extracting emotion using still pictures, there are quite few which analyze motion pictures. The eye and mouse motion were observed. Voice analysis was done based upon sound pressure.

著者

安楽 朋旦 藤井 雅留太 中村 正行

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2015, no.25, pp."2106-1"-"2106-4", 2015-09-23

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In this study, we developed a finite element simulation program for a three-dimensional stress analysis of the rim of a road bike wheel. The cross-sectional model of the rim structure is created based on the boundary data of the rim and a three-dimensional model is created by extruding the cross-sectional model. Aluminum alloy, generally used for the rim of the road bike wheel, is assumed as the material of the rim because it is inexpensive and isotropic material.

著者

尾田 十八 丹羽 一将

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2003, no.13, pp.341-342, 2003-10-30

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It is difficult that assemble a minute machine using still minute parts. If assemble it, space and friction between the parts cannot disregard in the micro world. However, such a problem is solvable if the objective function is realized by one continuum. The continuum having such a specific function is called "Functional Continuum (FC)". In this study, the FC for the key switch of the keyboard of a notebook PC is proposed, that is the one structure key switch using the stainless thin plate. On the other hand, the existing notebook PC has the rubber dome and the pantograph as a key structure part, and the number of parts is very much. In this paper, the two kinds of test pieces are actually manufactured, and the characteristic evaluation is performed experimentally.

著者

岡田 空海地 里中 直樹 藤原 徳一 上村 匡敬 須賀 一彦 柴田 政明

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2012, no.22, pp."3406-1"-"3406-8", 2012-09-26

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Recently various measures are made towards realization of low carbon society. Water-power generation is one leading policy. However, development of the small-scale water-power generation to power consumption, such as a plain part, is not fully progressing. Therefore, this research aims to develop the micro water-power generation equipment which used the new type of turbine. For developing new type of turbine called the tornado type, its prototype model experiment and numerical simulation are performed and the various parameters of the turbine are determined and the manufacturing checks are performed. Then, we conducted the profile data of turbine generated by the 3D-CAD, production of the prototype model by using RP equipment, and the check experiments of operation by the produced the prototype model. Moreover, cutting of the actual turbine by using 5-axis processing machine with the tool path data generated by the 3D-CAM was also performed. As a result, we confirmed that the rapid prototyping model is possible to rotate in the water flow. In addition, in the actual cutting experiment of the turbine, we confirmed that it is possible to manufacture of the turbine by 5-axis processing machine.

著者

伊豆倉 さやか 細野 繁 下村 芳樹

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2015, no.25, pp."2210-1"-"2210-10", 2015-09-23

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Systems integrators have developed IT service systems with computational hardware, software application and human resources. This integration has traditionally been conducted one-by-one for each client, and acquired tacit knowledge such as target domains, business rules, and constraints has not been shared effectively across several projects. To have sharable and reusable knowledge through development processes, this paper presents an asset-based IT service development framework which consists of preliminarily asset development, asset management, and asset reuse. The asset includes formalized deliverables of IT service development such as architectural diagrams and structured tacit knowledge required for designing and integrating the system, and enables evaluation of service quality under design constraints in early design phase. The evaluation results indicate reusability of assets from other projects. The framework stipulates these activities about developing and reusing assets, and aligns them into a new development process. Therefore, the framework can reduce the cost of development, improve the quality of the developed IT service system, and enhance the collaboration between developers.

著者

北 栄輔 原田 昌朗 山内 真 丸田 峻也

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2014, no.24, pp."1405-1"-"1405-5", 2014-09-17

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Bayesian network is the is one of the probabilistic graphical models that represents a set of random variables and their conditional dependencies via a directed acyclic graph. In this study, Bayesian network is applied for the stock price forecast. The present method classifies stock price into three situations; normal value, positive and negative outliers. Different networks are defined by data in three situations in order to forecast the stock price. The effectiveness of the present method is discussed in the numerical example.

著者

小林 正和 吉村 允孝 西脇 眞二 泉井 一浩

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2003, no.13, pp.271-272, 2003-10-30

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Collaborative product design implies that multiple designers will cooperate during the design of a product, by sharing knowledge and information. For practical design teams, expertise in a wide area is needed, but the area that a single designer can proficiently handle is usually quite narrow. Therefore, facilitated collaboration is indispensable to achieve efficient results from a practical design team. In recent years, customer requirements have become increasingly diversified, and companies have focused upon developing unique or increasingly sophisticated products to maintain their market share. As a result, achieving especially creative designs has become more important than ever. An additional aim of collaboration is to maximally assist this type of creative design process. This paper discusses an advanced collaborative system supporting creative design processes that depend on interactive communication among a number of designers. To implement such a system, this paper proposes a method for structurizing and visualizing communication processes.

著者

花原 和之 多田 幸生

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2003, no.13, pp.86-89, 2003-10-30

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Trial-and-error optimal design discussed in this article is an optimization process which is basically performed based on the designer's own intuition and experience. Such an approach does not have any rational or objective background; it is, however, widely used in the practical design process in many engineering fields. In this preliminary study, we conduct an evaluation of this optimal design process. A simple structural design problem is considered and a computer program which supports as well as records the designer's trial-and-error process is developed. The optimality and other properties of the trial-and-error optimal design process is discussed based on the obtained results.

著者

荒川 雅生 伊藤 寛 山崎 敏範

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2006, no.16, pp.51-52, 2006-11-14

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In this paper, we will explain our collaborative PBL between academic and industry in Kagawa University. We have strarted this program since 2004. We asked local industry to give our students a theme which they are interested in, but which is not clearly defined. Then three or four students make team to solve that problem. They start from thinking about what they are required. They have discussed and negotiate to define their theme for detail. Then, they will benchmark and propose a solution for the problem. From these processes, we expect them to get ability of team working, referencing, negotiation and collaboration.

著者

鶴見 康昭 中川 稔章 西垣 英一 西脇 眞二 小島 芳生 菊地 昇

出版者

一般社団法人日本機械学会

雑誌

設計工学・システム部門講演会講演論文集 (ISSN:13480286)

巻号頁・発行日

vol.2001, no.11, pp.279-281, 2001-11-01

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An integrated system with both Computer Aided Design (CAD) and Computer Aided Engineering (CAE) has been developed. Most of these systems mainly focus on the effectiveness of constructing Finite Element (FE) model In these systems, a FE model is automatically constructed and calculation is automatically carried out. But a good design candidate cannot be obtained since some analysis tools for finding out it effectively are not included. In this paper, firstly some problems in current CAE systems are made clear. Secondly, in order to overcome these problems, two new analyses, that are FOA( First Order Analysis) in a concept design phase and a optimization tool based on a reduction technique in detailed design phase, are presented. Finally, in order to perform these analyses in a integrated system, a few concepts of necessary technique are proposed.