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Article type: Cover
1981 Volume 32 Issue 4 Pages
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Published: October 15, 1981
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Article type: Cover
1981 Volume 32 Issue 4 Pages
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Published: October 15, 1981
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Article type: Appendix
1981 Volume 32 Issue 4 Pages
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Article type: Index
1981 Volume 32 Issue 4 Pages
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Article type: Appendix
1981 Volume 32 Issue 4 Pages
238-
Published: October 15, 1981
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Toshiro KUROZAWA, Ken'ichi MORI, Shigeo KASE
Article type: Article
1981 Volume 32 Issue 4 Pages
239-244
Published: October 15, 1981
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Spurious comopnents of economical time series often cause the biased estimates of regression parameters. This paper deals with a revised estiamtion method of the parameter of Henshaw's regression model for spurious seasonal time series, which is based on Abraham-Box's Bayesian regression model. The weights for spurious observation are adjusted to obtain the insensitivity of the parameters to the spurious or additional errors. The characteristics of the posterior distribution of parameters, the estimates of weights, and the sensitivity of the regression parameter are illustrated by analyzing a set of economical time series.
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Shigenobu NOMURA, Shigeyuki NAKAI
Article type: Article
1981 Volume 32 Issue 4 Pages
245-251
Published: October 15, 1981
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In this paper, we treat the route planning problem which is the representative problem in relation to physical move, and describe an optimal route selection based upon the minimization of the total tardiness gap. We apply the idea of Tie Set in graph theory so as to find feasible routes, and establish limited value and conditional expression corresponding with each condition. Then an algorithm to find an optimal route including an article's sequence is proposed, and their effectiveness is verified by the numerical examples.
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Tsutomu TABE, Rintaro MURAMATSU
Article type: Article
1981 Volume 32 Issue 4 Pages
252-258
Published: October 15, 1981
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In a two-stage assembly type production ordering system, the workshop must be managed in such a way that quantities of different items can be immediately supplied ot the user and that the inventory of parts and finished prodcuts can be reduced. This paper describes the following objects with regard to two production ordering models for the above production process : the derivation of structural formulas for the in-ship time if each production ordering model is used, and the estabilishment of a calculation procedure to obtain the average in-shop time. The ersult enables us to compare the production ordeirng models quantitatively in respect of the in-shop time.
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Toshio UENO
Article type: Article
1981 Volume 32 Issue 4 Pages
259-263
Published: October 15, 1981
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In designing a manual flow line, the work-time has been dealt with in an assumption that it is not relative to the number of workstations. However, in this study, the assemption is negated and the correlation between the number of workstations and the work-time is demonstrate and proved by experiments. Furthermore, in designing this type of flow line, a design of the flow line with minimum work-time is suggested from this study.
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Toshihiko SUMINOKURA
Article type: Article
1981 Volume 32 Issue 4 Pages
264-269
Published: October 15, 1981
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This paper examines the economical production planning for multipe orders having the same appointed date of delivery, using "A Priority-Seat Reservation Method" mentioned in Part(I) of htis study. Through this examination, several fundamental rules have been determined and are clarified in the conditions of production time in one shift, one shift with overtime and two shifts. Thus, the method of obtaining the theoretical estimate is clarified, and the most economical production planning is presented.
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Seiji KUROSU
Article type: Article
1981 Volume 32 Issue 4 Pages
270-276
Published: October 15, 1981
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In a job shop the interarrival time and service time of a job are usually random, and cannot be forecasted. When many jobs (customers) arrive at a shop, the customers will hav a long wait and some of them may come back without ordeing. In order to keep out of this the shop will carry out overtime work. However, excess overtime may increase idle time of machiens and workers. In this paper what increase or decrease in quantity of arriving jobs affects the shop is investigated through a numerical analysis. Finally indicators and timing for carrying out overtiume are discussed.
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Seiji KUROSU
Article type: Article
1981 Volume 32 Issue 4 Pages
277-284
Published: October 15, 1981
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One of the most important problems for a scheduling system in job shop environment lies in the difficulty of estimaitng a reasonable shop time. Among several elements which affect the shop time, queue time cannot so easily be estimated as others. In this paper shop time in a parallel work center is investigated and the estimation formula for mean queue time is developed. Approximations are satisfactory if the equation is used under normal conditions and are quite close to M/M/s.
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Katsuya MAEDA, Takashi KANAYA
Article type: Article
1981 Volume 32 Issue 4 Pages
285-291
Published: October 15, 1981
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Up to this time there are available various well used methods for motion study film analysis. However, these analysis mehtods have some problems. One of the typical problems is taht no direct measurement of motion pictures can be made. Therefore, in the present paper, we should like to report on the new simplified quantitative analysis methods of motion interpresentation which we have developed. This new film analysis method provides a technique for recording various specific patterns on film and direct measuring with a scale on the film.
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Takayoshi TAKECHI
Article type: Article
1981 Volume 32 Issue 4 Pages
292-296
Published: October 15, 1981
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Masayasu TANAKA
Article type: Article
1981 Volume 32 Issue 4 Pages
297-301
Published: October 15, 1981
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Masaru YAMAMOTO
Article type: Article
1981 Volume 32 Issue 4 Pages
302-305
Published: October 15, 1981
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Article type: Appendix
1981 Volume 32 Issue 4 Pages
306-307
Published: October 15, 1981
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Article type: Appendix
1981 Volume 32 Issue 4 Pages
308-309
Published: October 15, 1981
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Article type: Appendix
1981 Volume 32 Issue 4 Pages
App2-
Published: October 15, 1981
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