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Article type: Cover
1990 Volume 41 Issue 1 Pages
Cover1-
Published: April 15, 1990
Released on J-STAGE: December 17, 2018
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Article type: Cover
1990 Volume 41 Issue 1 Pages
Cover2-
Published: April 15, 1990
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Article type: Index
1990 Volume 41 Issue 1 Pages
Toc1-
Published: April 15, 1990
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
App1-_i_
Published: April 15, 1990
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Yoshimitsu IIZUKA
Article type: Article
1990 Volume 41 Issue 1 Pages
1-2
Published: April 15, 1990
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Hiroshi OHTA, Yun LIU
Article type: Article
1990 Volume 41 Issue 1 Pages
3-10
Published: April 15, 1990
Released on J-STAGE: December 17, 2018
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A model is presented by Jaraiedi, et.al. which can be used to determine the Average Outgoing Quality (AOQ) for a product which has multiple quality characteristics and which is subjected to multiple total inspections where the inspection is subject to errors. This model, however, assumes that two types of inspection errors are constant. The purpose of the present paper is to extend this model by relaxing the assumption so as to better account for the variation in inspection errors. Besides relaxing the assumption, cost analysis of the extended model is also discussed.
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Masanobu MATSUMARU, Hiroshi YAMASITA, Mamoru OZEKI
Article type: Article
1990 Volume 41 Issue 1 Pages
11-16
Published: April 15, 1990
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The aim of this paper is to analyze the relation between the effects of mergers and the change of financial structures at the time of the merger. We propose two models. One is to examine the effects of mergers. We formulate the model for the time series variables of the financial index values which the acquiring companies would have taken if the mergers had not taken place. We estimate values from the actual values. The other is to quantify the change of financial structures by using the financial variable quantity based on Kullback-Leibler information quantity, which is the objective criterion to measure the distance of two distributions quantitatively. We show the validity of these models through the analysis of the data on 26 firms.
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Akira KOUDA
Article type: Article
1990 Volume 41 Issue 1 Pages
17-22
Published: April 15, 1990
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J-model is a model for a product which has multiple quality characteristics and which is subjected to multiple 100% inspections where the inspection is subjected to errors. In this model, the number of nonconforming characteristics of a product indicates a degree of nonconformance of the product, and the degree of nonconformance affects the probability of inspection errors. In this papar, the relation between the degree of nonconformance and the error probabilities is investigated and the Average Outgoing Quality of multiple 100% inspections is derived.
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Tetuya MIYOSHI, Yoshiharu FUJIMOTO, Noriyuki NISHIYAMA
Article type: Article
1990 Volume 41 Issue 1 Pages
23-30
Published: April 15, 1990
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This paper is an approach to the theory of retail location which maximizes the retail quantity. Particular attention is given to consumer shopping behavior. First, locational problem in the case of single-purpose shopping is treated. Second, it is shown that two-purpose shopping provides the advantages of proximity of dissimilar retail stores. Third, locational problem in the case where consumers are allowed to practice two-purpose shopping is considered. Finally, retail location is illustrated with numerical examples and some concluding remarks are made.
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Naoki HIRABAYASHI, Hiroyuki NAGASAWA, Noriyuki NISHIYAMA
Article type: Article
1990 Volume 41 Issue 1 Pages
31-36
Published: April 15, 1990
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In a flowshop-type FMS with a limited buffer capacity, either Johnson rule or REAS scheduling method provides a low system utilization because of frequent occurrenes of machine blocking. In the previous paper, a "decomposition scheduling method" reduces the required buffer capacities in a flowshop-type FMS having sufficient buffer spaces. In this paper, the effects of the decomposition method on the system utilization are analyzed in the flowshop-type FMS with limited buffer capacities. Simulation results clarified that the decomposition method was useful when the total number of jobs was about four times more than the number of buffer capacity, and that under this condition the high system utilization obtained using this method in which the number of group jobs was about four times as many as the number of buffer capacity.
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Yoshinari YANAGAWA, Shigeji MIYAZAKI, Hiroshi OHTA
Article type: Article
1990 Volume 41 Issue 1 Pages
37-42
Published: April 15, 1990
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This paper deals with the optimal operation planning for the fixed quantity withdrawal kanban system. First, the formulas are given for obtaining the average inventory level and the minimum number of Kanbans to be required for fixed quantity withdrawal Kanban system. Secondly, the algorithm is proposed to determine the optimal container capacity so as to minimize the total operation cost composed of inventory cost and withdrawal cost. Thirdly, the behaviour of the optimal plannings is analysed under various values of parameters ; the order cost factor, the average consumption of parts per hour, and the duration of period in which the consumption rate of parts is constant.
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Yoshiyuki EGAWA
Article type: Article
1990 Volume 41 Issue 1 Pages
43-50
Published: April 15, 1990
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This paper deals with calculation methods of masked threshold for ambient noise to design auditory danger signals in factories. In calculating the masked threshold, the critical band theory had been used as a major method until the ISO-7731 draft appeared in 1986. Using 7 noise model patterns of factories, distinct features of the masked threshold value between two methods were clarified. In the calculation of the masked threshold value, it is recommended to employ the critical band method for the band lower than 500 Hz and ISO method for the band higher than 500 Hz. Further, depending upon the experimental study, the improved calculation formula was presented.
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Eiichi KOYANO
Article type: Article
1990 Volume 41 Issue 1 Pages
51-54
Published: April 15, 1990
Released on J-STAGE: December 17, 2018
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Yuko FUJISHIRO
Article type: Article
1990 Volume 41 Issue 1 Pages
55-63
Published: April 15, 1990
Released on J-STAGE: December 17, 2018
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
64-68
Published: April 15, 1990
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
69-
Published: April 15, 1990
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
70-71
Published: April 15, 1990
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
72-73
Published: April 15, 1990
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Article type: Appendix
1990 Volume 41 Issue 1 Pages
App2-
Published: April 15, 1990
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