Journal of Japan Industrial Management Association
Online ISSN : 2187-9079
Print ISSN : 1342-2618
ISSN-L : 1342-2618
Volume 60 , Issue 1
Showing 1-14 articles out of 14 articles from the selected issue
  • Type: Cover
    2009 Volume 60 Issue 1 Pages Cover1-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
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  • Type: Cover
    2009 Volume 60 Issue 1 Pages Cover2-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (3238K)
  • Type: Index
    2009 Volume 60 Issue 1 Pages Toc1-
    Published: April 15, 2009
    Released: November 01, 2017
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  • Masayuki MATSUI, Ying DAI
    Type: Article
    2009 Volume 60 Issue 1 Pages 1-10
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    It is well known that SCM has an effect that reduces the extra stock and the cost of system, but how it can make all enterprises achieve the maximal profit is becoming the new problem in the institutional view. First, the two parallel SCM models are identified and formulated on the queueing base of Make-or-Buy and Supplier-Retailers types. Next, the problem of ellipse hypothesis in SCM is numerically discussed in the integral balancing view. Integral balancing means that both economics (profit) and reliability (workload) hold in autonomous balancing by cycle-time sharing. In particular, a feature map in a balance matrix is suggested for a win-win strategy, and is compared to the ellipse theory in the serial SCM type.
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  • Hugejile, Shusaku HIRAKI, Zhuqi XU
    Type: Article
    2009 Volume 60 Issue 1 Pages 11-18
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Economic globalization makes it difficult for production systems to withstand keen competition without an overall increase in efficiency instead of the optimization of limited production lines. This paper deals with the problem of sequencing products for a mixed-model assembly line in just-in-time production systems. From the standpoint of supply chain management, we propose a new sequencing method that considers not only (1) keeping a constant rate of production of every part in preceding processes, and (2) minimizing the maximal work congestion in the assembly line, but also (3) shortening the delivery time to the dealer when the final products are delivered by the car carrier vehicles. In order to simultaneously satisfy these three goals, we introduce a two-stage approach. At first, by dividing the production period into some shorter periods, we determine the production volume of each product for each shorter period. This is in order to keep a constant rate of parts usage under the condition that we can appropriately allocate the car carrier vehicles for each shorter period. Next, we determine the production schedule of the periods that satisfies both minimizing the maximal work congestion in the assembly line, and shortening the delivery time to the dealer. Finally, we will show a numerical example to explain and clarify the effectiveness of the sequencing procedure proposed. By this proposal, we can improve the efficiency of the supply chain process such as in the automobile industry.
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  • Tadanobu MISAWA, Bunsei KAIFUCHI, Takuya TAJIMA, Haruhiko KIMURA
    Type: Article
    2009 Volume 60 Issue 1 Pages 19-27
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Recently, Internet technology has progressed, and there are many people who use the Internet. Internet auction are one of the services using Internet technology. Many users of Internet auctions want to get items which are cheaper and/or rare. However, there are many situations where the bid price goes up, especially in the phenomena in which the bid price rises suddenly towards the end of an auction. This leads to many users making bids higher than estimated because they get excited. For this reason, the data of market price-related contract price for Internet auctions was unveiled. However, there was no data for new or rare items. Therefore, it is necessary to support bidding activities in situations involving new or rare items. In this study, we analyzed contract prices using bid histories, not market price. Bid history was classified into seven clusters by clustering based on the k-means method. We verified that each piece of classified data has the features of contract price, opening price and so on. We then propose an estimation method of contract price based on our clustering. As the result, we show that users can judge calmly when provided with the estimation contract price.
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  • Hideo SUZUKI, Hirofumi MATSUO, Rita ARAUZ
    Type: Article
    2009 Volume 60 Issue 1 Pages 28-39
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    The level of quality management has recently been said to be deteriorating among top-rated, Japanese manufacturers. The manufacturers seem to have shifted their priorities from achieving high quality to responding to rapid changes in business environments, fierce price competition, and short product life cycles. On one hand, this leads to the decline of top management's quality consciousness, the reduction of in-house education and training, the reduction in the number of shop floor managers and workers, and the decline of their motivation and ability to achieve a level of high quality. On the other hand, they recognize that quality is still the central concept in manufacturing, and thus it is necessary to readdress this quality management issue. In order to do so, it is important to conduct an up-to-date survey and field study on quality management in Japan, and grasp quantitatively, the present state and its changes during the past years. In this paper, a questionnaire survey is designed to collect data from the manufacturing companies listed in the first section of the Tokyo Stock Exchange. It was conducted from December 2004 to February 2005. We investigated how they perceived the present state and changes of quality management infrastructure practices (e.g., top management leadership, human resource management, etc.), quality management core practices (e.g., manufacturing process management), and quality results. Furthermore, covariance structure analysis was conducted to investigate the relationships between quality management practices and quality results, and the quality management practices which have a large effect on the quality results, and whose present state/changes are low, are clarified. Based on these results, we discuss how the quality management framework should be redesigned.
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  • Kimihiro YAMANAKA, Nobuyuki NISHIUCHI, Shunsuke KUSAKA, Kunie BEPPU
    Type: Article
    2009 Volume 60 Issue 1 Pages 40-47
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    It is necessary to make information on web pages accessible to everyone. However, there are currently many web pages on the Internet that cannot be read easily due to poor combinations of character colors and background color. Many web pages also exist that have color arrangements that do not consider people with color vision defects. Thus, many web pages cannot be read easily or at all by people with color vision defects. In this study, we varied the brightness and hue of the character color and background color of a web page to determine which color scheme ensures the best web accessibility for people with color vision deficiencies. We conducted two further experiments with the goal of improving acceptance and satisfaction among people with normal color vision. Although subjects gave subjective evaluations in all experiments, the design of the acceptance experiments was based on the paired comparison method of sensory evaluation, allowing these subjective judgments to be objectively evaluated using a probability scale. The results showed that difference in brightness between text color and background color had the greatest effect on legibility. It was also found that acceptance was improved when the text color was set to a hue with high subjective brightness while the background used a hue with low subjective brightness.
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  • Etsuko KUSUKAWA, Yuuki NIIMI, Ikuo ARIZONO
    Type: Article
    2009 Volume 60 Issue 1 Pages 48-57
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    For recent years, the volume of product sales in the e-commerce environment has been increasing in the global market. In general, the online sales tend to have a higher return rate than the brick-and-mortar sales. Since a higher return rate is a feature of the online sales, we should consider an optimal selling policy, including the handling of the return products. In this paper, we present an optimal selling policy for the trading network system in an e-commerce environment which consists of a manufacturer (MF) and a retailer (RT). Then, we consider two situations of the decentralized supply chain by MF and RT, and the integrated supply chain by MF and RT. For treating of the products returned from the primary market (PM), the selling policy of reselling at both the secondary market (2nd-M) and the salvage market (SM) is considered (selling policy 1). Additionally, we consider the selling policy that the unsold products in the PM are treated in either the 2nd-M or the SM in a phase manner. The optimal selling policy in the trading network system is investigated by comparing selling policy 1 with selling policy 2, under the above two situations.
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  • Type: Appendix
    2009 Volume 60 Issue 1 Pages App1-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (68K)
  • Type: Appendix
    2009 Volume 60 Issue 1 Pages App2-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (68K)
  • Type: Appendix
    2009 Volume 60 Issue 1 Pages App3-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (68K)
  • Type: Appendix
    2009 Volume 60 Issue 1 Pages App4-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (68K)
  • Type: Appendix
    2009 Volume 60 Issue 1 Pages App5-
    Published: April 15, 2009
    Released: November 01, 2017
    JOURNALS FREE ACCESS
    Download PDF (68K)
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