1. Social Sciences Division, Japan International Research Center for Agricultural Sciences
2. Faculty of Economics and Business Administration, Reitaku University
3. Reitaku Institute of Political Economics and Social Studies, Reitaku University
4. Rural Development and Planning Division, National Institute of Rural Engineering, National Agriculture and Food Research Organization
5. Chair of Agricultural and Resource Economics, Division of Bio–systems Sustainability, Research Faculty of Agriculture, Graduate School of Agriculture, Hokkaido University