Senior Program Officer, Socl & Policy Science(s), Academic Division, United Nations University since 1989. Coord, International Trade & Regional Cooperation, Asian & Pacific Development Center, Malaysia, 1984-1989. Visiting Professor, Regional Science Department, University of Pennsylvania, United States of America, 1982-1984.
Rch Association, East-West Population Institute, East-West Center, United States of America, 1981-1982. Visiting Professor, Department of Economic & Department of Geography, University of Hawaii, United States of America, 1981-1982. Chief of Comparative Studies, United Nations Center for Regional Development, Japan, 1973-1980.
Senior Economist, CONSAD Rch Corporation(s), United States of America, 1968-1972. Rch Assistant, Department of Economic, University of Pennsylvania, 1965-1967.