Journal of Japan Industrial Management Association
Online ISSN : 2187-9079
Print ISSN : 1342-2618
ISSN-L : 1342-2618
Volume 61 , Issue 1
Showing 1-13 articles out of 13 articles from the selected issue
  • Type: Cover
    2010 Volume 61 Issue 1 Pages Cover1-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (16521K)
  • Type: Cover
    2010 Volume 61 Issue 1 Pages Cover2-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (16521K)
  • Type: Index
    2010 Volume 61 Issue 1 Pages Toc1-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (28K)
  • Daisuke HIROTANI, Katsumi MORIKAWA, Katsuhiko TAKAHASHI
    Type: Article
    2010 Volume 61 Issue 1 Pages 1-10
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    In traditional production lines designed using the line-balancing method, each worker is usually assigned to a particular fixed work, and it is valuable to decrease the training task to master the assigned work. However, when an imbalance among workers' speeds exists, the slowest worker will delay the overall work in the production line, and the production rate of the production line will also decrease. To solve this problem, a "Self-Balancing Production Line" was introduced in which each worker is assigned to work dynamically, thus enabling balanced production to be retained. For this kind of line, convergence conditions, where the position of each worker converges to a fixed point and the production rate becomes the maximum, were derived under the same workload. However, in reality bottleneck in which a lot of works have to be processed exists, and few papers assume bottleneck. When considering bottleneck, conditions for maintaining balance that maximize production rate are changed. Therefore, it is important to analyze this effect. In this paper, self-balancing production line with bottleneck is formulated and analyzed for both cases that consider and ignore the walk-back time, and the conditions that enable balanced production are analyzed.
    Download PDF (1201K)
  • Aya ISHIGAKI, Yasuhiro HIRAKAWA
    Type: Article
    2010 Volume 61 Issue 1 Pages 11-16
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    In this research, a production/delivery scheduling problem of minimizing the total flow time and the number of deliveries is considered. A job with a different processing time and due date is processed with one machine. There is a trade-off relationship between the total flow time and the number of deliveries. The production/delivery scheduling problem is formulized as large-scale combinatorial optimization problems. Therefore, the production/delivery scheduling problem required development of an efficient enumeration algorithm, in order to search for the Pareto-optimal solution. In this paper, we propose an algorithm which reduces the enumeration of due-date delay or non-inferior production schedule by using the due-date restriction and SPT (Shortest Processing Time) constraint. Moreover, a delivery scheduling problem is divided into a partial problem by due-date restrictions. An algorithm which reduces the enumeration of a delivery schedule is proposed by sequentially merging the Pareto solution of a partial problem. The efficiency of the proposed algorithm is investigated using a 20 jobs problem.
    Download PDF (609K)
  • Yuji NAKAGAWA, Shae-Chang SHYI, Shigeo ATSUJI, Sakuo KIMURA, Nozomi NA ...
    Type: Article
    2010 Volume 61 Issue 1 Pages 17-22
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    In this paper an algorithm is proposed for finding "exactly" efficient solutions (also known as Pareto optimal solutions, or non-dominated solutions) in the region where a decision maker desires, for the bicriteria multi-constraint nonlinear knapsack problem, which is a bicriteria separable discrete optimization problem. Here the word "exactly" implies that 1) it is guaranteed to be an efficient solution, and, 2) there are no missing efficient solutions between any two adjacent efficient solutions. This can be accomplished by using Nakagawa and Hikita's theorem to achieve 1), and by enumerating all feasible solutions in the efficient rectangle (an extension of Visee et al.) defined by two efficient solutions in order to achieve 2). To confirm the validity of the algorithm, computational experiments are carried out on the bicriteria 0-1 knapsack problem. It is found that practical problems can be solved using the algorithm in a practical amount of CPU time.
    Download PDF (656K)
  • Takahiro NISHIMURA, Akihiko SEO, Kouki DOI
    Type: Article
    2010 Volume 61 Issue 1 Pages 23-30
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    The touch panels have come into widespread use in recent years. For example, touch panels are used in ticket-vending machines at stations and automated teller machines at banks. However, there has been little research regarding touch-panel operability from the standpoint of biomechanics. If an evaluation index that is capable of providing an evaluation based on work posture can be created, that evaluation index can be transformed into a digital human model. Additionally touch-panel operability can be evaluated. The authors therefore applied arm manipulability utilized in the field of robotics to evaluate touch-panel operability and conducted an experiment to evaluate touch-panel usability. Ten healthy male subjects participated in the experiment. They were asked to operate the touch panel under the following conditions: seven touch panel angles (0, 15, 30, 45, 60, 75 and 90 degrees). As the evaluation index, switch operation frequency and subject operation efficiency were utilized to compare arm manipulability results. The results showed that arm manipulability correlates with switch operation frequency and subject operation efficiency. From this study, it was found that it is possible to apply arm manipulability as an evaluation index for touch panels.
    Download PDF (839K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App1-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (40K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App2-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (40K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App3-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (57K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App4-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (57K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App5-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (57K)
  • Type: Appendix
    2010 Volume 61 Issue 1 Pages App6-
    Published: April 15, 2010
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (57K)
feedback
Top