Professor, Faculty of Economics, Soka University, 2008-present
Adjunctive Professor, Graduate School of Agricultural and Life Sciences, University of Tokyo, 2011.
Adjunctive Professor, Faculty of Economics, Chiang Mai University, Thailand, 2007-2011
Visiting Scholar, Wharton School, University of Pennsylvania, Apr. 2012-Mar. 2013
Visiting Professor, Economics Department, De La Salle University-Manila, Philippines, Jan.-Mar, 2007
Visiting Scholar, Department of Economics, Pontifical Catholic University of Rio de Janeiro, Brazil, Feb.-Mar., 2008
Visiting Scholar, School of Accounting, Finance and Economics, Edith Cowan University - Joondalup, Australia, July-Aug., 2007
Visiting Scholar, School of Economics and Commerce, University of Western Australia, Aug.-Sep., 2005
Visiting Scholar, Faculty of Economics, Duke University, Feb.-Sep., 2004
Trustee, Japan Statistical Society, 2010-2013.
Associate Editor, Journal of the Japan Statistical Society, 2010-present.
Associate Editor, Asia-Pacific Financial Markets, 2010-present.