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Article type: Cover
1991 Volume 41 Issue 6 Pages
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Published: February 15, 1991
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Article type: Cover
1991 Volume 41 Issue 6 Pages
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Article type: Index
1991 Volume 41 Issue 6 Pages
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Article type: Appendix
1991 Volume 41 Issue 6 Pages
1-6
Published: February 15, 1991
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Sanae OGAWA, Hiroshi Ohta
Article type: Article
1991 Volume 41 Issue 6 Pages
377-382
Published: February 15, 1991
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In this paper, a comparison of two purchase policies, i.e., BP (Blind Purchase) policy and SP (Selective Purchase) policy, are tried from an economic viewpoint, considering the following cases : 1) Under the BP policy, the fraction defective of the purchased lot is a random variable.2) Under the SP policy, the lead time is a random variable.Furthemore, the case where the demand rate is a random variable is also discussed.
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Dong-Ming HUANG, Takao ENKAWA, Masao AKIBA
Article type: Article
1991 Volume 41 Issue 6 Pages
383-389
Published: February 15, 1991
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There is no single dispatching rule which performs dominantly better than any other rules for the mean tardiness job shop scheduling problem since the perfomance of dispatching rules depends on the conditions of each problem. This paper suggests an approach to generate new robust dispatching rules.First, this approach learns from successful examples by applying customary dispatching rules to obtain good conflict resolution rules.Then, an inductive procedure is applied to generalize this set of accumulated rules.Applying this approach to the static job shop scheduling problem, a novel dispatching rule was generated and demonstrated to have better performance than other dispatching rules for a wide range of due date tightness.
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Yasuhiko HOSONO, Sukeo YOSHIDA
Article type: Article
1991 Volume 41 Issue 6 Pages
390-397
Published: February 15, 1991
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This paper deals with the development of a new mechanism assisting a standard hand-propelled wheelchair in driving over a higher step.According to the measurement method presented, experimental results are given as the values of resistant force against various steps and possible power of nine male operators.The basic design of the proposed mechanism is illustrated, and its prototype is manufactured.The results from several experiments demonstrate that this prototype is able to drive over the step whose height can not be overcome by a standard wheelchair.It is, therefore, shown that the proposed mechanism is effective for driving over a higther step.
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Sanae OGAWA, Hiroshi OHTA
Article type: Article
1991 Volume 41 Issue 6 Pages
398-403
Published: February 15, 1991
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The effect of learning in setups and quality on the optimal lot sizes and the setup frequency in production process has been investigated by Chand.In this paper the effect of learning in ordering on the optimal ordering quantity and ordering frequency is studied based on a multi-item inventory model under the two ordering policies, that is, the lump ordering and the individual ordering policies.A comparison of the two ordering policies is also discuseed from the economic viewpoint.
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Yuko FUJISHIRO
Article type: Article
1991 Volume 41 Issue 6 Pages
404-412
Published: February 15, 1991
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an incompletely specified model is assumed to be a true model of data in our hand, in which it is uncertain whether the model is a zero-hypothesis or an alternative-hypothesis, and the question is to select the true model.It has been impossible to accept a zero-hypothesis by such traditional methods based on a completely specified model as testing of significance or selecting a statistical model of estimate, which has any latent loss based on ignorance of zero-hypothesis.The purpose of the present paper is to give a criterion for selecting the true model by testing of the both statistical hypotheses proposing a generalized loss of testing hypotheses, which is associated with a loss of testing in a form of probability and loss of estimate in quadratic form.
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Toshiyuki MATSUMOTO
Article type: Article
1991 Volume 41 Issue 6 Pages
413-420
Published: February 15, 1991
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This paper is concerned with a basic study of the effeciency of arm motions in the three dimensional working space. The aim of this paper is to investigate the ralationships between the location, the direction or the length of arm movement in the three dimensional working spece in a seated position and their efficiency in terms of time. The time of a subject's finger tip of his right arm to move in three directions ; X, Y, Z, from one grid point to another at maximum speed was measured. As a result, characteristics of the move time were determined mainly by a derection of movement. A location, a working height and movement type are affect the move time.
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Kiyoshi HORIE
Article type: Article
1991 Volume 41 Issue 6 Pages
421-426
Published: February 15, 1991
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The purpose of this paper is to propose a theory on motivating the leadership of leaders (managers and surpervisors in enterprises). It is concluded that if the characteristics of the Japanese "psychological trait" that Japanese aquire the consciousness of "Ikigai" from the human relations at work places are considered, a leader's performing the psychological mechanism of "Japanese masochism" means both to perform the leadership and to acquire the leader's own consciousness of "Ikigai".Therefore, the theory on motivating to leadership is proposed from the viewpoint of leader's consciousness of "Ikigai".
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
427-428
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-
Published: February 15, 1991
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
428-429
Published: February 15, 1991
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-
Published: February 15, 1991
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
429-430
Published: February 15, 1991
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Article type: Article
1991 Volume 41 Issue 6 Pages
430-
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Article type: Article
1991 Volume 41 Issue 6 Pages
430-
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
430-
Published: February 15, 1991
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
430-
Published: February 15, 1991
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Article type: Article
1991 Volume 41 Issue 6 Pages
430-
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Article type: Article
1991 Volume 41 Issue 6 Pages
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[in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
431-
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-
Published: February 15, 1991
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-
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Article type: Article
1991 Volume 41 Issue 6 Pages
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Published: February 15, 1991
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-
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Article type: Article
1991 Volume 41 Issue 6 Pages
431-432
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Article type: Article
1991 Volume 41 Issue 6 Pages
432-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1991 Volume 41 Issue 6 Pages
432-
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Article type: Article
1991 Volume 41 Issue 6 Pages
432-
Published: February 15, 1991
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[in Japanese], [in Japanese]
Article type: Article
1991 Volume 41 Issue 6 Pages
432-
Published: February 15, 1991
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JOURNAL
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