Graduate School of Business Economics, New York University
Graduate School of Mathematics, City University of New York (Queens)
Department of Chemical Engineering, Seoul National University
SAMHO Trading CO. LTD. (Head office, New York office)
Professor, Department of Economics, Chung-Ang University
Director of Statistics Department, Director of economics, Chung-Ang University
Director, Korea Economic Association
The president of the political and economic college, The president of the School of Political Economy and Economics., Chung-Ang University
Vice chancellor of Chung-Ang University
Mathematical Economics
Mathematical Economics, Economics of Change, Calculus
“Optimal Planning for Economic Stabilization”
Economic Analysis and Linear algebra, 2000
Economic Analysis and topology, 1997
Economic analysis and set theory, 1993
Economic analysis and mathematical logic, 1993
Optimal Planning for Economic Stabilization – A Dynamic Programming Approach, 1992