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Article type: Cover
1996 Volume 46 Issue 6 Pages
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Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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Article type: Cover
1996 Volume 46 Issue 6 Pages
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Published: February 15, 1996
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Article type: Index
1996 Volume 46 Issue 6 Pages
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Published: February 15, 1996
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Hiroyuki NAGASAWA, Noriyuki NISHIYAMA
Article type: Article
1996 Volume 46 Issue 6 Pages
525-533
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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The previous paper proposed an efficient algorithm for generating all nondominated solutions to the two-objective design problem of the separated-functional FMS to minimize the total equipment cost and to reduce the number of pallets. Efficient methods for making sensitivity analyses for each nondominated solution with respect to the required throughput and the equipment cost coefficients are provided in this paper. An interactive design system is developed for selecting a preferred solution among the derived nondominated solutions considering the sensitivity analyses.
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Yasuyoshi SAKAMOTO, Michiko ANSE, Katsuhiro SAKAMOTO, Masashige TSUJI
Article type: Article
1996 Volume 46 Issue 6 Pages
534-541
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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Flexible scheduling systems are needed to adapt themselves to rapid changing environments. Under this circumstance, such flexible systems have been developed by the AI-approach. However, there are problems how experts' knowledge is acquired more efficiently and how it is structured in order to modify knowledge-bases efficiently. In this study, we present an effective hypothesis-driven knowledge acquisition and how to structure experts' knowledge. We further develop a system based on this structured knowledge. We could develop a flexible system by the "semi-structure approach".
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Yoshihiro TAMURA, Masayuki GOTOH, Nobuhiko TAWARA
Article type: Article
1996 Volume 46 Issue 6 Pages
542-549
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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The objective of this study is to design a periodic ordering system for multi-stage push-type production and inventory systems, which provides the possible procedure to control both the variances of order quantity and inventory. This system realizes the stable production and low level inventory. The conventional solution is the transfer function method, which is the description method of dynamic system with a single variable. However, this is difficult to be solved in the case which the system is a multi-stage process and the demand is not stationary. In this paper, we propose the new formulation to control production and inventory based on the optimal regulator control theory techniques, that has superior extensity. From the simulation experiment, we show that the system regulates both variances.
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Masatoshi IDO, Sadao KATO
Article type: Article
1996 Volume 46 Issue 6 Pages
550-556
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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This paper presents the estimation method of walking time. Walkings under the Multi-processes (TA-KOUTEIMOTI) working system are classified into four types of motions. Type 1 walking motion needs a body turn at the start point, type 2 is straight walking without body turn, type 3 requires another body turn at the end point and the last type involves body turns in the course of walking. The characteristics of four types of walking motions were considered based on four experiments. The result shows that the time of the above four types of motions can be estimated by one equation with variables indicating the walking distance and the angle of body turn at the start point and in the course of walking. In these experiments the deficiencies of MTM and WF analysis were demonstrated by comparing with the analysis of four types of motions.
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Masaaki OHBA, Toshifumi UETAKE, Hitoshi TSUBONE
Article type: Article
1996 Volume 46 Issue 6 Pages
557-564
Published: February 15, 1996
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This paper deals with a production scheduling problem in the two stage hybrid flow shop, where there is one machine in the first stage and m kinds of different machine in the second stage. In the first stage, Basic cyclic scheduling and Irregular cyclic scheduling are used as alternatives for production scheduling in batch. This paper presents a basis of setting an extra Production Capacity which can achieve the planned production quantity, analyzing the relationship between production capacity and rate of attainable production quantity.
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Masayuki GOTOH, Midori UCHIZONO, Nobuhiko TAWARA
Article type: Article
1996 Volume 46 Issue 6 Pages
565-572
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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In the present paper production and inventory systems are discussed based on the conventional methods, i.e. the γ-type and the G-type periodic ordering systems. This paper proposes the FK-type periodic ordering system and discusses the relation among γ-type, G-type, and K-type of ordering systems. The FK-type ordering system has two parameters, F and K which are the feedback gain of the inventory level and the predictive demand respectively, We show that the FK-type ordering system includes the γ-type and the G-type ordering systems.
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Kakuro AMASAKA, Hiroyuki OIWA, Makoto KAMIO
Article type: Article
1996 Volume 46 Issue 6 Pages
573-584
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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Generally, among many SQC methods, the multiple regression analysis is used most to solve problems because of its convenience and effectiveness. But it has various problems itself, and no well-practicable method to cope with these problems have been proposed. Therefore, it is seldom utilized. This paper focuses on the variation source analysis that is the starting point of applied multiple regression analysis. First, its importance and then the problems arising from the influence of multicollinearity are studied. Then, the BN method (the forward stepwise BEST "N" method) is proposed. Next, the value of "N" on BEST "N" for selecting variables most effectively is searched by simulation. Finally, the effectiveness of BN method is demonstrated by applying it to actual cases.
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Abdolhamid TORKI, Yasutoshi YAJIMA, Takao ENKAWA
Article type: Article
1996 Volume 46 Issue 6 Pages
585-589
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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This paper is concerned with a new approach for solving quadratic assignment problems (QAP). We first reformulate QAP as a concave quadratic programming problem and apply an outer approximation algorithm. In addition, an improvement routine is incorporated in the final stage of the algorithm. For large size problems, we examined a Simulated Annealing as the final stage of algorithm. Computational experiments on two series of standard data demonstrate that this algorithm can yield favorable results within reasonable computational effort.
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Yoshihiro FUTATSUISHI, Ichie WATANABE
Article type: Article
1996 Volume 46 Issue 6 Pages
590-598
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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This paper deals with the makespan minimization problem in an n-item, three-stage flowshop production system. Each stage is assigned to a machine, and a processing job for a product is composed of four elementary operations. The machine assignments for three elementary operations are fixed, but that for the last elementary operation is free. Thus a schedule is determined by the two factors such as the assignment of elementary operations and operation sequencing in each machine. The study deals with the simple problem assuming that all processing jobs are the same and whichever machine is assigned to, it takes the same processing time for the elementary operation which can be assigned to any machine, under the concept of "maximum pass". As a result, the study showed the required condition which limits the extent of the optimal solution under the above-stated condition. Still more, the study proposes an approximation method based on the preceding result, and discusses more generalized problems.
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Norio HIBIKI
Article type: Article
1996 Volume 46 Issue 6 Pages
599-604
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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A goal-vector approach, which is one of the mathematical programming techniques, can be used to achieve multiple conflicting goals well-balanced. The open-L utility function with a goal-vector approach is approximately assumed to be an alternative of the non-linear utility function, which is usually used by a decision maker. In this paper, the relation between the type of moment p of a distance function and the parameter β with a goal-vector approach is discussed, when p-norm function as a non-linear utility function is used. Then a decision maker with p-norm utility function can apply a goal-vector approach to practical planning problems.
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Katsunori SUMI, Seiichi HAYAKAWA, Kiyoshi HORIE
Article type: Article
1996 Volume 46 Issue 6 Pages
605-613
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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The purpose of this paper is to clarify the effects of job involvement and workplace social support on mental and physical health conditions. A questionnaire was given to 298 male workers in a large-scale manufacturing car plant. Data analysis was made by using 255 respondents. The results obtained were as follows ; (1) Job involvement and workplace social support show the respective relieving effects on some psychological and physical symptoms according to the tenure classes. (2) An interaction effect can be observed between job involvement and workplace social support on different psychological and physical symptoms according to the tenure classes.
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Zhuqi XU, Shusaku HIRAKI
Article type: Article
1996 Volume 46 Issue 6 Pages
614-622
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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This paper deals with the problem of sequencing products for a mixed-model assembly line in just-in-time production systems. We propose a new sequencing method which aims at (1) keeping a constant production rate of every part in the preceding processes and, (2) minimizing the maximal work congestion at each work station in the assembly line. We also suggest that joint working areas may be set between adjacent two work stations. With this suggestion, we can improve the efficiency of the assembly line. Finally, a numerical example is shown to illustrate the sequencing procedure and clarify the effectiveness of the proposed method.
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Article type: Index
1996 Volume 46 Issue 6 Pages
623-625
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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Article type: Index
1996 Volume 46 Issue 6 Pages
626-629
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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Article type: Appendix
1996 Volume 46 Issue 6 Pages
App1-
Published: February 15, 1996
Released on J-STAGE: December 17, 2018
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