1. University of Nicosia and University of Nicosia Research Foundation,Departement of Computer Science,Nicosia,Cyprus
2. Warsaw University of Technology,Warsaw,Poland
3. Hellenic Mediterranean University,Department of Electrical and Computer Engineering,Heraklion,Crete,Greece
4. Hellenic Mediterranean University,Department of Management Science and Technology,Agios Nikolaos,Crete,Greece
5. International Hellenic University, Greece and University of New Mexico,USA