自動車部品産業における取引関係オープン化の日独比較

抄録

This study consists mainly 2 parts. First objective is to conduct quantitative study with data collection and its analysis of business transaction openness by utilizing HHI （Herfindahl-Hirschman Index） to clarify the difference between Japan and Germany regarding concentration for specific customers. In former studies, there are some theses provides transaction openness studies, but those studies are reported mainly within Japan domestic cases. Typically, Japanese Automotive Parts Inter-Firm relationships are specific and focusing on their preferred customers. This is due to Relation Specific Skills （Asanuma, 1997） and OEM’s purchasing strategies to restricts the numbers suppliers for each Parts. In chapter 3 and 4, author conducted the comparison of HHI between Japan and Germany and confirmed that the situation in Germany was completely different. In Germany, Automotive parts inter-firm relationship were significantly opening compared with Japanese Inter-Firm Relationships.

As second objective, author assumed the cultural difference as a key variable so interviews for German Supplier Executives were conducted to listen their understanding why German Suppliers can open inter-firm relationships from business culture standpoint. After the interview, author conducted Text Mining analysis and confirmed that German supplier has different culture and strength especially in Surface Competitiveness （Fujimoto, 2003） and self-efficacy. Those are the key factors to develop business relationships positively and aggressively so that they can open inter-firm relationships.