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Article type: Cover
1991 Volume 42 Issue 2 Pages
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Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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Article type: Cover
1991 Volume 42 Issue 2 Pages
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Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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Article type: Index
1991 Volume 42 Issue 2 Pages
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Published: June 15, 1991
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
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Published: June 15, 1991
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Saburo TENDA, Yoshitaka NAGAI
Article type: Article
1991 Volume 42 Issue 2 Pages
65-74
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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This paper suggests a classification method which is called MCST-II for predicting the probability of goal attainment in designing work groups. The triplets of worker, task and supervisor in work groups are classified by MCST-II. A set of similar types of the triplets is used for modeling conditional probabilities from the viewpoing of AIC minimization. AIC depends on the attributes of the triplets used for classification. MDCP-II is a systematic procedure in which the method of selecting attributes is utilized. The validity of MCST-II was proved through comparison between the models which were formed by MCST-II and MCST-I.
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Akihiro KANAGAWA, Hiroshi OHTA
Article type: Article
1991 Volume 42 Issue 2 Pages
75-81
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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A new criterion is introduced for the unique determination of single sampling plans by attributes based on operating characteristics. In this paper, the differences between the producer's and consumer's risks and specified values for these risks are quantified as the loss from the viewpoint of regret. Sampling plans are determined by using the criterion which gives a balance between the loss caused by both risks and the inspection cost. An approximate formula is also proposed for the practical design.
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Katsuhiko TAKAHASHI
Article type: Article
1991 Volume 42 Issue 2 Pages
82-87
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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In order to control the variances of the production and inventory levels of the multi-stage production inventory system, this paper proposes the target inventory at the second stage that is the immediately preceding stage of the final stage, and analyzes the effects of its target level upon the variances. As a result, it is clear that the proposed method can decrease all of the variances except for the variance of inventory level at the final stage, although the previous method increases the variances of inventory levels not only at the final stage but also at the preceding stages.
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Yasuhiro HORI, Satoshi TANGE, Michio SOSHIRODA
Article type: Article
1991 Volume 42 Issue 2 Pages
88-94
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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We aim at proposal of a heuristic lot scheduling method making use of characteristics of optimal schedules with zero-tardiness and minimum-flow-time under the divided delivery condition. In this paper, we deal with the preparatory parts for above proposal. We get samples of optimal schedules produced from small-numerical problems. Next, we get a characteristic of optimal schedules making use of above samples. This characteristic shows us approach-directions from a basic schedule toward optimal schedules. Approach-directions mean how to change positions of products in schedules, and have eight types constructed by doing-nothing, productreplacement, lot-composition, lot-separation, and coordination of in-schedule idle time.
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Masashige TSUJI, Katsuhiro SAKAMOTO, Yasuyoshi SAKAMOTO, Tadanori WATA ...
Article type: Article
1991 Volume 42 Issue 2 Pages
95-104
Published: June 15, 1991
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The purpose of this paper is to develop a domain shell system for supporting consultants who diagnose and propose improvement plans. This system consists of evaluating sub-system, cause searching sub-system, problem specifying sub-system, improvement plans generating sub-system and interface sub-system. Using a hierarchical tree system of financial ratios, this system evaluates top ratios and searches a series of ratios which cause bad results. Using the knowledge bases of consulting, this system specifies problems and generates improvement plans. This system is implemented by AI architecture which vertically combines frame systems and production systems.
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Setsuo MAEDA, Yasufumi KUME
Article type: Article
1991 Volume 42 Issue 2 Pages
105-111
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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The purpose of this study is to clarify the temporary threshold shift of finger-tip vibratory sensation after intermittent exposure to vibration transmitted to the hand. Two experiments were carried out using ten subjects with normal vibratory sensation. The intermittent vibration was applied to the right hand through a handle attached to an electro-dynamic vibration exciter. The threshold of 125Hz vibratory sensation was measured in 2.5dB steps at right forefinger-tip before exposure, and after cessation of exposure. As a result, TTS(Temporary Threshold Shift) following the intermittent vibration exposure could be predicted based on the exposure-equivalent rule and the equation of growth and recovery process of TTS.
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Ren WU, Mitsuo NAGAMACHI, Yukihiro MATSUBARA
Article type: Article
1991 Volume 42 Issue 2 Pages
112-117
Published: June 15, 1991
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Data collected from 642 Japanese corporations were applied to the Arbitrage Pricing Theory (APT) to clarify if it will be appropriate to Japanese firms. the results analyzed did not coincide with the estimation of APT. We constructed a new model, the Linear Structural Relational (LISREL) Model with fuzzy linear regression analysis, which is able to indentify each factor affecting the investment rate to common stocks. Four specific corporations were selected and data of balance sheets, income statements and so forth for 8-10 years were applied to the model. We found out that the model predicted the trend of these companies.
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Ken SAITO, Li Chung SHIH, Takao ENKAWA, Kenji ITOH
Article type: Article
1991 Volume 42 Issue 2 Pages
118-125
Published: June 15, 1991
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In this research we propose and test two non-optimal facility layout planning models based on the AI search technique "filtered beam search". The first model is a combination of consturction type with iterative improvement type facility layout planning methods, while the second is a pure iterative improvement method. The performance of the two models (quality of solution vs. processing time) is compared against CRAFT, a widely applied method in layout planning, and both methods prove to be competitive. Solutions from the two models are compared to the solutions generated by CRAFT for problems of varied sizes. CRAFT was run 100 times for each problem, and in each time it started from a different initial layout generated randomly. The first model generated consistentiy better solutions than the best solution obtained by CRAFT, and the solutions generated by the second model were consistently among the best solutions obtained by CRAFT.
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Toshio UENO, Mituyuki KAWAKAMI, Takayoshi UKAI
Article type: Article
1991 Volume 42 Issue 2 Pages
126-132
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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In this study, according to the simulation of the relationship among the elemental work time, cycle time, the ratio of priority and the line balancing efficiency, a system with the minimum number of work stations is searched. It is confirmed that a samller elemental work time as compared with cycle time and a lower ratio of priority make a higher possibility of a system with the minimum number of work staions. In case the system is impossible, a system with the minimum number of work stations accomplished by enlarging some work stations and an economical formula for the system are presented.
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
133-135
Published: June 15, 1991
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
136-
Published: June 15, 1991
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
137-
Published: June 15, 1991
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
138-139
Published: June 15, 1991
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Article type: Appendix
1991 Volume 42 Issue 2 Pages
App2-
Published: June 15, 1991
Released on J-STAGE: December 17, 2018
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