1. Senior Research Engineer, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX.
2. Doctoral Student, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX.
3. A.P. and Florence Wiley Chair Professor, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX.