Doctor of Juridical Science, Hokkaido University

Ph.D., Department of Geomatics, National Cheng Kung University, Taiwan, Dec. 2015

Ph.D. in Economics, Duke University, USA

Ph.D. in Economics, Texas A&M University, USA

Ph.D. in Economics, Pennsylvania State University, USA

Ph.D. in Economics, Toulouse School of Economics, FRANCE

Ph.D. in Economics, Univ. of Washington, USA