1. Ph.D. Candidate, Dept. of Civil Engineering, Univ. of New Mexico, MSC01 1070, 1 University of New Mexico, Albuquerque, NM 87131 (corresponding author).
2. Professor, Dept. of Civil Engineering, Univ. of New Mexico, MSC01 1070, 1 University of New Mexico, Albuquerque, NM 87131.