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Yusaku Ogai,Yoshiyuki Matsumura,Yusuke Hoshino 한국의류학회 2020 Fashion and Textiles Vol.7 No.1
The aim of the present study was to evaluate how the business-to-business (B2B) networks in the Japanese textile and apparel industry changed between 2005 and 2010 using data on 200 companies. Network analysis was used to study the properties of the B2B networks, and how their structures changed was characterized using the USD/JPY exchange rate. The network analysis revealed power-law properties of the B2B networks, and the core networks characterized by the largest degree centrality exhibited positive correlations with the USD/JPY exchange rate. By contrast, the peripheral networks characterized by the network path length exhibited the negative correlations with the exchange rate USD/JPY. Therefore, the changes that occurred in the B2B networks are explained as the complementarity of comparative advantages originating in the USD/JPY exchange rate. Moreover, the USD/JPY exchange rate affected the B2B networks through not only the complementarity of importing and exporting but also by changing the structures.
Removing Boundaries, Losing Connections: Electoral Consequences of Local Government Reform in Japan
Yusaku Horiuchi,Jun Saito,Kyohei Yamada 동아시아연구원 2015 Journal of East Asian Studies Vol.15 No.1
In this article we examine the role of local politicians in affecting national-level election outcomes by focusing on the drastic municipal mergers in Japan that took place in the early 2000s. Specifically, we argue that the political party that relies most extensively on local politicians’ efforts for electoral mobilization and monitoring will suffer an electoral slump when municipalities are merged and the number of municipal politicians is swiftly reduced. We empirically show that municipalities with a history of mergers exhibit significantly lower voter turnout and obtain a smaller vote share for the ruling Liberal Democratic Party in national elections when compared to other municipalities without an experience of mergers. This result indicates that municipal politicians are indispensable human resources for LDP candidates running for the national parliament.
Multi-Preview Configuration Control for Predictive Behavior of Redundant Manipulator
Yusaku Nakamura,Tongxiao Zhang,Mamoru Minami 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes a new approach named Multi-Preview Control to achieve a non-line control of trajectory tracking and obstacle avoidance for redundant manipulator. This control strategy locates between on-line local method and off-line global method(pathplanning). In the trajectory tracking process, the configuration of manipulator is required to possess avoidance manipulability as high as possible inreal-time. Multi-Preview Control uses several future optimal configurations to control current configuration to complete task of trajectory tracking and obstacle avoidance on-line with higher avoidance manipulability and reachability. We compare Multi-Preview Control with Single-Preview Control, and verify the effectiveness and validity of Multi-Preview Control through simulations.