1. Associate Professor of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
2. Professor and Deputy Director of Multidisciplinary Center for Earthquake Engineering Research, Dept. of Civil, Structural Engineering, 130 Ketter Hall, Univ. at Buffalo, Buffalo, NY 14260.
3. Graduate Student Research Assistant, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
4. Professor and Director of Center for Civil Engineering Earthquake Research, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89509.