1. Ph.D. Student and Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Michigan State Univ., East Lansing, MI.
2. Research Associate, Dept. of Civil and Environmental Engineering, Michigan State Univ., East Lansing, MI.
3. Assistant Professor, Dept. of Civil Engineering, Civil Engineering Faculty, Istanbul Technical Univ., Istanbul, Turkey.
4. Associate Professor, Dept. of Civil and Environmental Engineering, Michigan State Univ., East Lansing, MI.
5. Professor, Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., Ames, IA.