Manager Lu-Ho Consultant Group, Taichung, Taiwan, 1978-1979. Teaching officer, 2d Lieutenant National Cheng-Kung University Army Training Base, 1979-1981. Production planner Texas Instruments Taiwan Ltd., Taipei, 1981.
Teaching assistant University Iowa, Iowa City, 1982-1984. Operation manager Commonwealth of Independent States Laboratory, University Iowa, 1984-1987. Visiting assistant professor Montanna State Professor, Bozeman, 1988.
From assistant professor to associate professor University Louisiana (formerly University Southwestern Louisiana), Lafayette, 1988-1999, professor, since 1999. Consultant in field.