Journal of Social Safety Science
Online ISSN : 2187-9842
Print ISSN : 1345-2088
ISSN-L : 1345-2088
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Volume 20
Displaying 1-5 of 5 articles from this issue
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  • Development of Business Continuity Plan for Effective Expressway Operation by applying both CPM and BFD
    A Case Study on West Nippon Expressway Co, Ltd.
    Akira OKAMOTO, Shinjiro IKEZOE, Haruo HAYASHI, Keiko TAMURA, Munenari ...
    2013 Volume 20 Pages 1-11
    Published: July 26, 2013
    Released on J-STAGE: November 08, 2013
    DOIhttps://doi.org/10.11314/jisss.20.1
    JOURNAL FREE ACCESS
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    It is an important social mission for West Nippon Expressway Co., Ltd. (following NEXCO West Japan) to continue the wide expressway network operations against various risks. This paper reports on process of the business continuity plan development aimed at the establishment of the standardized crisis control system and efficient expressway operation by applying both BFD (Business Flow Diagram) and CPM (Critical Path Method) through the case study at NEXCO West Japan. Especially, it also can be shown that the introduction of CPM for WBS (Work Break Down structure) of emergency behavior is effective to find critical path and to decide the priority of countermeasures against various risks under cost restraint.
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  • Study on the Gap Measures between Recovery Time Objective and Current Recoverable Time in Business Continuity Management
    Hitoshi KAWAGUCHI
    2013 Volume 20 Pages 13-20
    Published: July 26, 2013
    Released on J-STAGE: November 08, 2013
    DOIhttps://doi.org/10.11314/jisss.20.13
    JOURNAL FREE ACCESS
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    As a premise, an organization sets a Recovery Time Objective (RTO),(1) which is based on Maximum Tolerable Period of Disruption (MTPD)(2) and Current Recoverable Time (CRT),(3) as part of Business Continuity Management (BCM).(4) The author presents a selection model for a proposed solution to reduce the “Gap Time between RTO and CRT” (hereinafter referred to as Gap Time). The method used for Gap Time formalization is a 0-1 integer programming model. Because it comprises two models—“current recoverable time reduction maximization model (CRT model)” and “RTO achieved number maximizing model (RTO model)”—the author refers to it as the “Twin Model.” These models sometimes have trade-off relationships.
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  • Microscale Environmental Factors Which Affect Occurrence of Suspicious Person Cases against Children
    A Case Study in Soka City, Saitama Prefecture
    Yuki SASAKI , Tomofumi FUJII , Tatsuya KISHIMOTO
    2013 Volume 20 Pages 21-28
    Published: July 26, 2013
    Released on J-STAGE: November 08, 2013
    DOIhttps://doi.org/10.11314/jisss.20.21
    JOURNAL FREE ACCESS
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    The purpose of this study is to clarify environmental factors which affect occurrence and nonoccurrence of suspicious persons cases against children. We investigated the physical environment of both places where the case occurred and where the case didn’t occur, and analyzed the factors for occurrence and non-occurrence. The major findings are as follows. (1) Suspicious persons appear frequently where visibility is low and seldom appear at the place with wide view. (2) Suspicious persons tend to appear at the places where many children gather such as the places near schools and don’t appear at quiet places where few people gather. (3) Suspicious persons more frequently appear on streets where automatic vending machine or small shops exist in residential area and less frequently appear on streets in downtown and quiet residential area.
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  • Examining External Assistance in Emergency Response Using Interview Data
    Case Study: The Great East Japan Earthquake, 2011
    Hiroko KOUMOTO, Kishie SHIGEKAWA, Satoshi TANAKA
    2013 Volume 20 Pages 29-37
    Published: July 26, 2013
    Released on J-STAGE: November 08, 2013
    DOIhttps://doi.org/10.11314/jisss.20.29
    JOURNAL FREE ACCESS
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    The present study, as a case study of the Great East Japan Earthquake, examined external assistance of response activities in a major disaster. Regarding external assistance in disasters, considering both sending and receiving the assistance is essential. In our analysis, interview data of responders were adopted. They were conducted to municipal and prefectural officials from both affected and unaffected areas. Based on their point of view, we examined practical assisting activities by external teams, receiving activities in an affected local government, and problems and lessons from their response.
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  • Study on Necessary Capacity of Evacuation Centers in Koto Delta Area during Metropolitan Large-scale Flood
    Considering both Inland Evacuation and Wide-area Evacuation-
    Kohei MAKINODAN , Makoto FUJIU , Miho OHARA
    2013 Volume 20 Pages 39-48
    Published: July 26, 2013
    Released on J-STAGE: November 08, 2013
    DOIhttps://doi.org/10.11314/jisss.20.39
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    In recent years, it is reported that the Koto Delta Area in Tokyo including areas whose elevation are lower than sea level has the risk of large-scale flood. In this paper, considering both inland and wide-area evacuation, we estimated the number of people who should evacuate to evacuation centers using GIS data of flood, population distribution and building inventory. And then, we evaluated the capacity in each area and the possible use of existing buildings as additional evacuate centers. Finally, we discussed necessary approaches to prepare appropriate evacuation centers.
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