1. FAST-Lab., Faculty of Engineering and Natural Sciences, Tampere University, 33100 Tampere, Finland
2. INDUST Systems, 26222 Patras, Greece
3. Computer Engineering and Informatics Department, University of Patras, 26504 Patras, Greece
4. algoWatt S.p.A, 20123 Milan, Italy
5. Computer Technology Institute and Press “Diophantus”, 26504 Patras, Greece