1. Research Associate, Dept. of Civil and Environmental Engineering, Univ. of Southern California, Los Angeles, CA 90089-2531.
2. Research Professor, Dept. of Civil and Environmental Engineering, Univ. of Southern California, Los Angeles, CA 90089-2531 (corresponding author).
3. Assistant Professor, Dept. of Civil and Environmental Engineering, Gdańsk Univ. of Technology, 80-233, Gdańsk, Poland.