JOURNAL of the JAPAN RESEARCH ASSOCIATION for TEXTILE END-USES
Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
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Volume 60, Issue 6
Displaying 1-11 of 11 articles from this issue
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  • Development of an Easy and Reliable Evaluation Method for the Heat-blocking Effect of Lace Curtains
    Chie NARITA, Yoshiko TAYA
    2019 Volume 60 Issue 6 Pages 469-478
    Published: June 25, 2019
    Released on J-STAGE: June 25, 2019
    DOIhttps://doi.org/10.11419/senshoshi.60.6_469
    JOURNAL FREE ACCESS
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    There are many kinds of lace curtains with the heat-blocking effect against sunlight in the market. Since the index and evaluation method is not established for heat-blocking effect of lace curtains, some inspection institutes and companies conduct tests using different own methods. In order to the consumers get correct information on heat-blocking effect of lace curtain, the unified standard is needed. In this study, we have developed the test device and the evaluation method for heat-blocking effect of lace curtains, and the availability were researched using 30 kinds of over-thecounter lace curtains of the various patterns. The solar light similar to the sunlight were used as a light source, heat flow through lace curtains were measured by temperature increase of a black copper plate in the test box. Results by using our method indicated high precision and repeatability, therefore we have concluded that this is a high-reliable method to evaluate the heat-blocking effect of lace curtains.

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  • Analysis of Changes in Centralities of the Hub Companiesin the BtoB Networks of Japanese Textile and Apparel Industry
    Yusaku OGAI, Yoshiyuki MATSUMURA, Yusuke HOSHINO
    2019 Volume 60 Issue 6 Pages 479-485
    Published: June 25, 2019
    Released on J-STAGE: June 25, 2019
    DOIhttps://doi.org/10.11419/senshoshi.60.6_479
    JOURNAL FREE ACCESS
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    The purpose of this research is to quantify relevancies between the economic index and the number of transactions in the Business to Business (BtoB) networks of Japanese textile and apparel industry. The BtoB networks of Japanese textile and apparel industry were analyzed based on the supplier datasets of the department of total-apparel companies (about 200 companies for 2005～2010). Regression analysis between network indexes of the hub companies and the exchange rate of USD/JPY was used in this research. As a result, a regression equation indicating positive correlation on degree centrality of a trading company was found. This tendency was represented behavior as an international trading company in the BtoB networks.

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