1. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA.
3. Professor, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA.
4. Assistant Professor and Colf Distinguished Professor in Geotechnical Engineering, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA.