1. Associate Professor, Dept. of Civil, Computer, Construction, and Environmental Engineering, and Applied Mathematics, Univ. of Messina, Vill. S. Agata, 98166 Messina, Italy (corresponding author).
2. Assistant Professor, Dept. of Civil, Computer, Construction, and Environmental Engineering, and Applied Mathematics, Univ. of Messina, Vill. S. Agata, 98166 Messina, Italy.
3. Ph.D. Student, Dept. of Civil, Computer, Construction, and Environmental Engineering, and Applied Mathematics, Univ. of Messina, Vill. S. Agata, 98166 Messina, Italy.