Rutgers, the State University of New Jersey: Department of Mechanical and Aerospace Engineering
- Assistant Professor: July 1980-June 1982
- Associate Professor: June 1982-June 1985
- Professor: July 1985-June 1991
- Professor II: July 1991-
- Board of Governors Professor: October 2001-
- Chairman, July 2005-2008
- Interim Dean, School of Engineering, 2008-
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Indian Institute of Technology, Kanpur: Department of Mechanical Engineering
- Assistant Professor: April 1976-July 1980
- Visiting Professor: September 1988-June 1989
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A T & T Bell Laboratories: Engineering Research Center- Princeton, NJ
- Member of Research Staff, July 1974 - April 1976
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Cornell University: Department of Mechanical Engineering
- Research Assistant, McMullen Fellow, Graduate Fellow, September 1970 - July 1974
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Visiting Appointments:
- Tata Consulting Engineers- Bombay, India: Summers 1976-1978
- Solar Energy Research Institute- Golden, Colorado: Summer 1981
- National Institute of Standards and Technology- Gaithersburg, Maryland: Summer 1982
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