1. Research Fellow, Dept. of Electronics, Information, and Bioengineering, Politecnico di Milano, P.za Leonardo da Vinci, 32, 20133 Milano, Italy (corresponding author).
2. Associate Professor, Dept. of Electronics, Information, and Bioengineering, Politecnico di Milano, P.za Leonardo da Vinci, 32, 20133 Milano, Italy; and Senior Scientist, Institute of Environmental Engineering, ETH Zurich, Ramistrasse 101, 8092 Zurich, Switzerland.
3. Research Associate, Dept. of Civil Engineering, Univ. of Bristol, Queen’s Building, University Walk, Bristol BS8 1TR, U.K.
4. Ph.D. Student, Dept. of Electronics, Information, and Bioengineering, Politecnico di Milano, P.za Leonardo da Vinci, 32, 20133 Milano, Italy.
5. Professor, School of Civil and Environmental Engineering, Univ. of Cornell, 211 Hollister Hall, Ithaca, NY 14853-3501.