1. Research Assistant, Dept. of Civil Engineering, Univ. of Brescia, Via Branze 38, Brescia (BS), Italy.
2. Assistant Professor, Dept. of Engineering Design and Technologies, Univ. of Bergamo, Viale Marconi 5, Dalmine (BG), I-24044, Italy.
3. Professor, Dept. of Engineering Design and Technologies, Univ. of Bergamo, Viale Marconi 5, Dalmine (BG), I-24044, Italy.