1. Ph.D. Candidate, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX.
2. Professor, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts Amherst, Amherst, MA.
4. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA.