1. Post-Doctoral Research Scholar, Dept. of Civil and Environmental Engineering/258, Univ. of Nevada, Reno, Reno, NV 89557-0152.
2. Associate Professor, Dept. of Civil and Environmental Engineering/258, Univ. of Nevada, Reno, Reno, NV 89557-0152 (corresponding author).
3. Professor, Director of Center for Civil Engineering Earthquake Research, Dept. of Civil and Environmental Engineering/258, Univ. of Nevada, Reno, Reno, NV 89557-0152.