1. Department of Civil Engineering and Architecture, Università di Catania, Catania, Italy.
2. LUNAM Université, Université de Nantes & IRCCyN UMR CNRS 6597, Nantes, France.
3. Department of Information Systems, Statistics and Management Science, University of Alabama, Tuscaloosa, AL, USA.
4. Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece.