1. MSIS Department and CIMIC, Rutgers University, 180 University Avenue, Newark, NJ 07102, USA. E-mail: atluri@cimic.rutgers.edu
2. CDS Department, Seton Hall University, NJ 07019, USA. E-mail: chunsoon@shu.edu
3. University of Milan, Italy. E-mail: mazzoleni@dsi.unimi.it