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Article type: Cover
1985 Volume 36 Issue 4 Pages
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Published: October 15, 1985
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Article type: Cover
1985 Volume 36 Issue 4 Pages
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Published: October 15, 1985
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
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Published: October 15, 1985
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Article type: Index
1985 Volume 36 Issue 4 Pages
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
236-
Published: October 15, 1985
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Ken YOSHIOKA
Article type: Article
1985 Volume 36 Issue 4 Pages
237-238
Published: October 15, 1985
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Jiro KONDO
Article type: Article
1985 Volume 36 Issue 4 Pages
239-240
Published: October 15, 1985
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
241-243
Published: October 15, 1985
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Kinji TAKAGI, Shinichiro YOKOYAMA
Article type: Article
1985 Volume 36 Issue 4 Pages
244-255
Published: October 15, 1985
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This is the paper which deals with the problem of examining effects of non-normality on the operating characteristic (OC) curves of various kinds of variables sampling plans when the parent population is a non-normal distribution, In this paper we assume that the underlying distribution is of a Weibull type. The plans to be considered are 192 kinds in all, including single variables (Known-Sigma and Unknown-Sigma, and one-sided for upper (S_U) or lower (S_L) specification limit) sampling plans for three kinda of combinations (viz., relatively small, moderate, and large ones) of acceptable (p_0) and rejectable (p_1) qualities, fixed producer's (α) and consumet's (β) risks at (α=0.05,β=0.10). With various combinations just described above, we design two types of sampling plans based on "Normal" ("by mistake", without any normality test) and on Weibull distributions with shape parameters θ=1.5(0.5)5.0 (see, e.g., Table 1 for the case of θ=2) and compute the all OC curves under consideration (see Figs. 1 through 4). Also, we discuss four kinds of methods for investigating the effects of non-normality and illustrate same examples (see Table 2), and examine carefully the pattrns of OC curves for Known-Sigma and Unkown-Sigma "Normal" Plans for S_U and S_L. Finally, the so-called "Problem of Robustness" is discussed by using a proposed measure, called δ'(or, δ) and defined by (4.25) through (4.28), for measuring the discrepancies of OC curves of KS"N"P and KSWP (or, for measuring those of OC curves of US"N"P and USWP). By virtue of the measure δ'(or, δ) whole values are all shown Table 3 for the current problem we propose in Section 6 some interesting criteria (1) through (4) for the range of Weibull shape parameter θ which can be practically regarded as "robust."
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Sennosuke KURIYAMA, Toyokazu NOSE, Yutaka DEGUCHI
Article type: Article
1985 Volume 36 Issue 4 Pages
256-261
Published: October 15, 1985
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MRP is one of the principal techniques of production and inventory management used by manufacturing firms. The most important function of this technique is planning and executing the master production schedules by the use of the bill of materials. Few papers have considered inventory-related costs in each parts level with respect to the production schedules. From this point of view, we proposed the multi-stage, dynamic and economic lotsizing technique which introdiced the inventory-related costs in each parts level based on deterministic and fixed demand. The proposed method was compared with the other methods based on some demeand patterns using the numerical examples in order to illustrate the successful effects of this method. Furthermore, the model described above was developed for the case of deterministic and changable demand.
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Tatsuo UI, Takehiko MATSUDA
Article type: Article
1985 Volume 36 Issue 4 Pages
262-268
Published: October 15, 1985
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In the field of organization theory, ambiguity has attracted special interest in the context of the new wave of organization theory and the attention to the Japanese way of management. In this papaer a survey by a questionnaire is attempted, and the data from 414 respondents are analyzed by quantification theory (III). It is found that "ways of thinking" relative to ambiguity in organizational practice are first classified by the axis implying "propensity for excluding anbiguity-propensity for non-excluding ambiguity", then classified by the axes of "imformality-formality", "framework orientation-detail orientation", "explicit communication-implicit communication", and "individualism-collectivism"
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Saburo TENDA, Yoshitaka NAGAI, Tetsuro SHINGU
Article type: Article
1985 Volume 36 Issue 4 Pages
269-274
Published: October 15, 1985
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This paper suggests a multidimensional classification method for predicting the probability of goal attainment in designing work groups. The validity of the new method was proved by classifying works. The statistic AIC is introduced into the method. The main purpose of classifying the entities by the method is to predict the probability that any entity belonging to a similar type will attain the design goal as s conditional probability. It is a prominent feature of the method that a set of similar types which are used for the purpose is determined rationally by the AIC.
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Mitsuyuki KAWAKAMI, Toshio UENO
Article type: Article
1985 Volume 36 Issue 4 Pages
275-280
Published: October 15, 1985
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Motion level compared and examined in job enlargement system and conveyer system, concerning the ratio of practice time to standard time and the number of therbligs. The results are : (1) The assembly time of initial elements in the conveyer system is larger than that in the other. (2) Incidental handling takes place by get and place in the conveyer system, and it takes more time than that in the other. (3) The get and place increases with the number of work station. Under a certain condition, the productivity of the job enlargement system is higher than that in the other.
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Yoshitaka NAGAI, Saburo TENDA, Tetsuro SHINGU
Article type: Article
1985 Volume 36 Issue 4 Pages
281-286
Published: October 15, 1985
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In our methods on the design of effective work groups the relations between attributes and effectiveness are found from the use of the entity's similar types, which are formed by the multidimensional classification method (MDC). The design rules can be produced through each facet of the work group, that is worker group and task group. This paper deals with the task group and ascertains some characteristics of actual task groups and the method to evaluate each task group. These are very important to establish the rational and consistent rules and design procedures.
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Eiichi KOYANO
Article type: Article
1985 Volume 36 Issue 4 Pages
287-291
Published: October 15, 1985
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The purpose of this study is to examine the periodic lengths of pulse speed variability curve and input human erroer curve in order to develop a new prediction method for input human error. From 393 experiments with 40 subjects who performed typewriting and calculating for 400 man-hours, it was found out that the periodic lengths of two curves are almost equal and constant individually.
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Tadaaki FUKUKAWA, Toshikazu YANAGUTI, Tetsuya YAMANASHI
Article type: Article
1985 Volume 36 Issue 4 Pages
292-297
Published: October 15, 1985
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This paper presents a mathematical apporoach to the water resources distribution problem at a period of water shortage. Before we construct the distribution problem, we discuss the extent of damage by water shortage and define the damage functions. Distribution models are constructed in terms of nonlinerar programming problem and nonlinear goal programming problem with ordreing and weighting factors and nonlinear minimax programming problem. A numerical example is demonstrate.
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Nobuo MIYASHIRO
Article type: Article
1985 Volume 36 Issue 4 Pages
298-303
Published: October 15, 1985
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The present study examined the relationship between Fitts'index of difficulty (ID=log_22A/W) and movement time for some visual positioning movements, and the microstructure of movement time was investigated from accelerating viewpoint. Twenty combinations of four movement distances (A=5,10,20,and 40cm) and five target diameters (W=2,4,8,16 and 32 mm) were provided. The movement time depended on both target diameter and movement distance, and the movement obeyed the Fitts'Law. The correlation coefficient between MT and ID was 0.858 which was statistically significant (P<0.01). Furthermore, the other parameters which were obtained from acceleration pattern were correlated with ID.
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Ichie WATANABE
Article type: Article
1985 Volume 36 Issue 4 Pages
304-309
Published: October 15, 1985
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The purpose of this paper is present two approximation algorithms for a scheduling problem to minimize the makespan with n jobs and m parallel machines with different processing rates. Those two algorithms are based on "LPT rule" and "Modified-LPT rule" for identical machines and are named "Expanded LPT (ELPT) rule" and "Modified-Expanded LPT (M-ELPT) rule" respectively. Three lower bounds on the makespan have been developed, and computational results for ELPT rule and M-ELPT rule are presented and compared.
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Shunji YOKOI
Article type: Article
1985 Volume 36 Issue 4 Pages
310-315
Published: October 15, 1985
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We got the optimum design of press dies. This is based on the table of function and cost-analyzed lifecycle cost on every element of press die functions. We can discover uselessness or loss-hidden in the press dies-through the economical review and observation of actual die
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
316-
Published: October 15, 1985
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[in Japanese]
Article type: Article
1985 Volume 36 Issue 4 Pages
317-
Published: October 15, 1985
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
317-318
Published: October 15, 1985
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
319-
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Article type: Appendix
1985 Volume 36 Issue 4 Pages
App2-
Published: October 15, 1985
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