First Author:   Kai Duttle Institute of East Asian Studies, Mercator School of Management, University of Duisburg-Essen kai@kai-duttle.de   Forsthausweg 2 Duisburg, 47057, Germany   +49 1577 893 8937(Phone) +49 1577 893 8937(Fax) Second Author: Keigo Inukai Institute of Social and Economic Research, Osaka University inukai@iser.osaka-u.ac.jp   6-1 Mihogaoka, Ibaraki Osaka, 567-0047, Japan