Journal of Japan Industrial Management Association
Online ISSN : 2187-9079
Print ISSN : 1342-2618
ISSN-L : 1342-2618
Volume 48 , Issue 6
Showing 1-17 articles out of 17 articles from the selected issue
  • Type: Cover
    1998 Volume 48 Issue 6 Pages Cover9-
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
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  • Type: Cover
    1998 Volume 48 Issue 6 Pages Cover10-
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (1353K)
  • Type: Index
    1998 Volume 48 Issue 6 Pages Toc5-
    Published: February 15, 1998
    Released: November 01, 2017
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  • Tsutomu IZUI, Ken'ichi MORI
    Type: Article
    1998 Volume 48 Issue 6 Pages 285-294
    Published: February 15, 1998
    Released: November 01, 2017
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    Influential factors in the stimulation of small group activities in various workshops are discussed. As the behavioral style of a QC circle leader, the authors propose a multidimensional leadership behavior. Morse and Wagner proposed an instrument to measure and evaluate the behavior and activities of on-the-job managers. Adopting the ideas put forward by them, the leadership behavior of QC circle leader was measured. Questionnaires were distributed to six manufacturing companies and produced 166 worthwhile responses. The effects of the 10 dimensional leadership behavior on small group activities are analyzed with regard to group cohesiveness, group norm, cohesiveness×norm, autonomy, relations with office organization, and group performance. The mediation variables are composed of nine indices of circumstantial characteristics and leaders' work centrality.
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  • Hiroshi KONNO, Toshio TAKEUCHI
    Type: Article
    1998 Volume 48 Issue 6 Pages 295-300
    Published: February 15, 1998
    Released: November 01, 2017
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    This paper is concerned with a new method for assigning students to departments at Tokyo Institute of Technology using a linear programming formulation to improve the overall satisfaction of students. The basic idea is to use the geometric mean of the standardized record of exams and the degree of satisfaction of students as the data for defining the score of assignment and improve the overall satisfaction by maximizing the sum of scores obtained by each students. The result of simulation using real data shows that this method has a substantial effect on improving satisfaction of students.
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  • Hisao ISHIBUCHI, Tadahiko MURATA
    Type: Article
    1998 Volume 48 Issue 6 Pages 301-313
    Published: February 15, 1998
    Released: November 01, 2017
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    We propose a hybrid algorithm to search for non-dominated solutions of multi-objective flowshop scheduling problems. The proposed hybrid algorithm is constructed by combining a local search procedure with a multi-objective genetic algorithm. A large variety of non-dominated solutions can be obtained by the proposed algorithm with various search directions in the objective space. A tentative set of non-dominated solutions is separately stored from the current population during the execution of the proposed algorithm. Some of the stored non-dominated solutions are used as elite solutions. In the local search procedure of the proposed algorithm, the number of neighborhood solutions that are examined for each move is limited in order to equally utilize the two different search mechanisms : the local search and the global search by the genetic algorithm. The ability of the proposed algorithm to efficiently search for a large variety of non-dominated solutions is demonstrated by applying it to multi-objective flowshop scheduling problems for minimizing the makespan, the maximum tardiness and the total flowtime.
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  • Zhuqi XU, Shusaku HIRAKI
    Type: Article
    1998 Volume 48 Issue 6 Pages 314-320
    Published: February 15, 1998
    Released: November 01, 2017
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    Designing flexible mixed-model assembly lines is a critical issue to respond to demand fluctuations effectively. This paper suggests a method for designing flexible mixed-model assembly lines with joint working areas. We first propose a criterion of the flexibility of the assembly lines. Next, we develop a mathematical model to design joint working areas for the assembly lines and propose an approximate algorithm for the model. Finally, we illustrate the proposed method and clarify its effectiveness by a numerical example.
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  • De-bi TSAO, Takao ENKAWA
    Type: Article
    1998 Volume 48 Issue 6 Pages 321-330
    Published: February 15, 1998
    Released: November 01, 2017
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    This paper proposes modified vehicle scheduling problem to maximize resource utilize, so as to minimize necessary stocking spaces, inventory levels and shortages. Multiple period delivery scheduling problem in a system with one depot and N retailers is considered. The depot is responsible for replenishing inventories in the retailers. Stochastic demand are considered, and an algorithm for the delivery scheduling is presented introducing surplus delivery and backward approach of delivery smoothing. Through numerical experiment using real data of AVM (Automatic Vending Machine) and a common test data from a ftp site, resource utilization is increased to 99.67%, while the average stocking space is decreased by 17.35%, and average level of inventory is decreased by 25.7%, and average ratio of stock out is decreased by 14.77%.
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  • Tamao KUROYA, Hitoshi TSUBONE, Kiyoshi KATAOKA, Haruki MATSUURA
    Type: Article
    1998 Volume 48 Issue 6 Pages 331-338
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    This research investigates the impact of two order release strategies that decide the release timing upon the manufacturing performance when internal variation cannot be ignored in job shop environments. Two symmetrical and typical order release strategies are studied in this research. One is a pull type strategy that recognizes the job shop as a full work system, such as the just-in-time system. The other is a push type strategy based on Input/Output control, such as the MRP system. First, we examine the way of setting capacity by introducing the parameter α and the work-in-process level which can maintain the machine utilization at a specified level. Then, we analyze the impact of such internal variations as estimate errors for processing time and machine break upon the manufacturing performance. Job flow time and lead time are adopted as a measure of the manufacturing performance.
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  • Hiroumi MORIYAMA, Takao HADA
    Type: Article
    1998 Volume 48 Issue 6 Pages 339-349
    Published: February 15, 1998
    Released: November 01, 2017
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    Suppose there are several machines with different performances and several parts to be processed. Each part requires a set of tools which have to be installed in the tool magazine with limited capacity. We consider a parallel NC machine scheduling problem which assigns each part to each machine so that the makespan can be minimized under tool magazine capacity constraints. This study proposes an optimal algorithm for solving the problem on the basis of the branch and bound method. First, the problem is formulated as a mixed 0-1 integer programming problem and a simple solution method of its Lagrangean relaxation problem is presented to determine its lower bound. After the lower bound is strengthened by using Lagrangean decomposition, a branch and bound method to solve the parallel NC machine scheduling problem is developed and its effectiveness is discussed through computational experiments.
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  • Mitsuyoshi HORIKAWA, Hitoshi TSUBONE
    Type: Article
    1998 Volume 48 Issue 6 Pages 350-358
    Published: February 15, 1998
    Released: November 01, 2017
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    Evolving from cost, quality, and delivery time, flexibility is becoming a key dimension of the firm's competitive priorities. The need to explicitly consider flexibility makes it necessary to develop measurements for various types of manufacturing flexibility and analyze their strategic and/or economic value in improving the performance of manufacturing system.This paper deals with the problem of evaluating two types of flexibility in a job shop which has a bottleneck. We compare how machine flexibility and routing flexibility affect the due date performance, especially under a dynamic environment which has both external factors relative to jobs and internal factors relative to the manufacturing system. It is introduced into the production model such internal factors as bottleneck, variation of operation time, setup time and flow pattern of job, and such external factors as due date, shop load and emergency job. First, we investigate how machine flexibility and routing flexibility affect due date performance relative to internal factor or external factor. Then, we compare which type of these flexibility is superior in a dynamic environment. Based on the result, we present a basis of designing efficient flexible manufacturing systems.
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  • Il-Hwan HWANG, Hiroshi KATAYAMA, Jinichiro NAKANE
    Type: Article
    1998 Volume 48 Issue 6 Pages 359-369
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Recently it is widely noticed that manufacturing environments are surrounded with capricious market situations such as shorter product life cycle, higher product variety, shorter delivery times and so forth. In order to survive this highly uncertain market, the manufacturing systems are called for being capable of adapting themselves to these environmental conditions effectively and rapidly. With the understanding of both external and internal requests for manufacturing systems, the concept of flexibility which refers to the ability of a manufacturing system to effectively and rapidly respond to cost and environmental changes has attracted attention as an effective weapon to achieve the competitive advantages. In this context, a lot of researches on the manufacturing flexibility, especially its definitions, classifications, economic feasibility and its performance measurements, have been conducted, trying to understand it ranging from its nature to its effects on manufacturing performances. However, most of the literature have been devoted to the operational standpoint with modeling approaches, such as hardware requirements or optimal operation strategy for a specific FMS. Therefore it seems that current literature are unsuccessful in providing managerial insights with manufacturing strategic perspectives. In 1996,we performed a survey on manufacturing strategy, called MFP which has been conducted internationally since 1983. This survey was particularly designed to gather information on the competitive factors pertinent to the leading manufacturers in the world, and many an empirical evidence obtained from its survey data have been published. The objective of this paper is to examine the hierarchical structure of manufacturing flexibility types by using the structural equation modeling. And also, the paper provides strategic implications of the flexibility types which may shed some light on the directions of manufacturing strategy in flexibility.
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  • Masahiko FUYUKI, Masahiro ARAKAWA, Yoshio FURUICHI, Ichiro INOUE
    Type: Article
    1998 Volume 48 Issue 6 Pages 370-377
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    An improvement method of simulation-based production scheduling, named Parameter Space Search Improvement Method, is proposed. The improvement phase of the simulation-based production scheduling activity is first discussed, focusing on due-date conscious production such as make-to-order production and job shop production. Discussion then centers on methods for enhancing the production scheduling quality. Further, including the definition of a parameter space to search for a better solution, an improvement method is proposed and its effectiveness is shown not only on a simple job shop model, but also on an actually working system.
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  • Mitsuyuki KAWAKAMI, Shinichi AOKI
    Type: Article
    1998 Volume 48 Issue 6 Pages 378-384
    Published: February 15, 1998
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    The change from manual labor to man-machine dependent systems cannot be denied, as they contribute to an improvement in productivity. But, there is also the fact of an increased workload on the operator. In order to discover better working environment standards for man-machine systems, much research concerning VDT work is being done. But the use and consideration of a "fragrance" as a working environmental factor is rare. This paper describes design factors for a reasonable working environment which supports a man-machine combined system for VDT work. The method of research notes "fragrance" as one factor to be explored when designing a working environment. It also considers the influence which this factor has on productivity and workload from an experimental approach. The evaluation indexes in the experiment are obtained by measuring the working efficiency and quality in data input work, the mental changes (stability) measured by an EEG (electroencephalograph), and the workload degree determined by a survey on subjective symptoms. The results show the following : 1) When a fragrance stimulus is given to the subjects, it was shown to have effect on their concentration on work and to mentally stabilize them in comparison with their state under natural condition. 2) When an awakening fragrance with a 20% concentration was given to the subjects, the effect showed the optimal level of improvement in productivity and mitigation of the workload.
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  • Type: Index
    1998 Volume 48 Issue 6 Pages 385-386
    Published: February 15, 1998
    Released: November 01, 2017
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  • Type: Index
    1998 Volume 48 Issue 6 Pages 387-389
    Published: February 15, 1998
    Released: November 01, 2017
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  • Type: Appendix
    1998 Volume 48 Issue 6 Pages App5-
    Published: February 15, 1998
    Released: November 01, 2017
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