1. Professor, Center of Excellence for Fundamental Studies in Structural Mechanics, Dept. of Civil Engineering, Iran Univ. of Science and Technology, Tehran, Iran. E-mail: aafshar@iust.ac.ir
2. Distinguished Professor, Dept. of Land, Air and Water Resources and Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616. E-mail: MAMarino@ucdavis.edu
3. Research Fellow, Dept. of Civil Engineering, Iran Univ. of Science and Technology, Tehran, Iran. E-mail: ebebtehaj@yahoo.com
4. Assistant Professor, Dept. of Civil Engineering, Iran Univ. of Science and Technology, Tehran, Iran. E-mail: jmoosavi@iust.ac.ir