1. Automation, Industrial Systems Institute, Rion Patras, Greece
2. Department of ECS Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
3. Department of Systems Engineering, University of Alicante, Alicante, Spain
4. IRIMAS, Université de Haute Alsace, Mulhouse, France
5. Department of Industrial Engineering, University of Salerno, Fisciano, Italy