1. Assistant Professor, Dept. of Civil, Construction, and Environmental Engineering, Pennsylvania State Univ., Middletown, PA.
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, Berkeley, CA.
3. Adjunct Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, Berkeley, CA.
4. Professor, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Ilam, Christchurch, New Zealand.
5. Geotechnical Research Engineer, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Ilam, Christchurch, New Zealand.