1. Associate Professor, Dept. of Civil, Chemical, Environmental, and Materials Engineering (DICAM), Viale Risorgimento 36, Univ. of Bologna, 40136 Bologna, Italy; formerly, Associate Professor, Univ. of Hartford, West Hartford, CT 06117 (corresponding author).
2. Postdoctoral Student, Dept. of Civil, Architectural, and Environmental Engineering (DICEA), Univ. of Padova, 35131 Padova, Italy.
3. Associate Professor, Dept. of Civil, Architectural & Environmental Engineering, Missouri Univ. of Science and Technology, Rolla, MO 65409.
4. Assistant Professor, Dept. of Civil, Architectural, and Environmental Engineering (DICEA), Univ. of Padova, 35131 Padova, Italy.