1975.4 - 1978.2

 Lecturer at Institute of Economic Research, Hitotsubashi University

1978.2 - 1985.5

 Associate Professor at Institute of Economic Research, Hitotsubashi University

1985.6 - 1998.9

 Professor at Institute of Economic Research, Hitotsubashi University

1998.10 -2000.3 

 Research Executive at the IBJ-DL Financial Technology

2000.4 -2004.3

 Professor of Institute of Economic Research, Kyoto University, Head of the  Research Center for Financial Engineering

2004.4-

Professor of Graduate School of Global Business, Meiji University,
Visiting Professor of Institute of Economic Research, Kyoto University,

1979.8 - 1980.6

 Visiting Professor, Department of Statistics, London School of Economics

1980.7 - 1981.8

 Visiting Professor, Department of Mathematics and Statistics, University of  Pittsburgh

1984.7 - 1986.7

 Visiting Chief Researcher, Economic Planning Agency

1986.9 - 1987.12 

 Visiting Researcher, Institute for Monetary and Economic Studies, Bank of  Japan

1988.1 - 1988.5
1997.1 - 1997.5

 Visiting Professor, Department of Statistics, Rutgers University

1990.4 -1990.5 

 Visiting Professor, Department of Statistics, University of Maryland

1990.8 -1991.8 

 Visiting Professor, Graduate School of Business, University of Chicago

1993.3 -1993.4 

 The Winegard Visiting Professor, University of Guelph

1995.4 -

 Visiting Researcher, Issac Newton Institute, Cambridge University

1998.3 -1998.4 

 Visiting Researcher, Columbia University

2000.4 -

 Research Executive at the IBJ-DL Financial Technology

1975.3 

 Ph.D. in Statistics (University of Minnesota, 1975)

1982.12 

 Dr. in Mathematics (Kyushu University, 1982)

1986.8

 International Mathematical Statistics (IMS)