An Empirical Study on Structural Analysis of Keiretsu using 3-Dimensional Spatial Graph Theory

2014 Fiscal Year Final Research Report

• Project/Area Number: 24510217
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: Hiroshima University (2014); Ube National College of Technology (2012-2013)
• Principal Investigator: ITO TAKAO 広島大学, 工学(系)研究科(研究院), 特任教授 (00280264)
• Co-Investigator(Kenkyū-buntansha): SAKAMOTO Makoto 宮崎大学, 工学部, 准教授 (50196101) ; IKEDA Satoshi 宮崎大学, 工学部, 准教授 (70282796)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ネットワーク

Outline of Final Research Achievements

In order to identify the behaviors of membership companies in a specific group, data of transactions and cross-shareholdings of Mazda's Yokokai from 1986 through 2007 have been collected in this study. Not only centrality, influence, effective size and other network indexes, but also the Euclidean distances in 3-dimensional space, the linkage between individual companies and their strategic behaviors, the changing trend of strategic behaviors of the individual companies and their corporate performance have been analyzed. Specifically, as typical spatial graph model, the model of DEC and IDE have been developed, and sensitivity analysis of individual companies have been performed. The relationship between the Euclidean distance among all membership companies in 3-dimension space and their corporate performance have been elucidated. Furthermore, as the index of IKIOI (momentum), accelerated velocity using limited cycle theory has been proposed and tested in this study.

Free Research Field

経営工学