· Professor, Massachusetts Institute of Technology1992–
· Associate Professor, Massachusetts Institute of Technology1986–1992
· Assistant Professor, Massachusetts Institute of Technology1983–1986
· Research Scientist, Lawrence Berkeley Laboratory, University of California, Berkeley1980–1983
· Ph.D. Mechanical Engineering, University of California, Berkeley1980–
· Research/Teaching Assistant, University of California, Berkeley1977–1980
· M.Sc. Mechanical Engineering, Cairo University, Egypt1975–
· Research/Teaching Assistant, Calgary University, Alberta, Canada1975–1976
· B.Sc. Mechanical Engineering, Cairo University, Egypt1973–
· Research/Teaching Assistant, Cairo University, Egypt1973–1975