Professional Career:
    2000-present Professor, Graduate School of Business Administration,
     Keio University
    1993 Associate Professor, Graduate School of Business Administration,
     Keio University
    1992 Nippon Telegraph and Telephone Corporation
    1988 Research Associate, Harvard University
    1982 Nippon Telegraph and Telephone Corporation
    Education:
    1992 DBA, Harvard University
    1988 MBA, Harvard University
    1982 BA, The University of Tokyo
    Publications:
    "Open Architecture Senryaku."(1999)
    "Open Network Keiei."(1995)