1. Assistant Professor, Dept. of Civil Engineering, Univ. of New Mexico, MSC01 1070, Albuquerque, NM 87131 (corresponding author).
2. Graduate Research Assistant and Ph.D. Candidate, Dept. of Civil Engineering, Univ. of New Mexico, MSC01 1070, Albuquerque, NM 87131.
3. Professor of Civil Engineering, Univ. of Mississippi, University, MS 38677-1848.