1. University of Western Macedonia,Department of Electrical and Computer Engineering,Kozani,Greece
2. Sidroco Holdings Ltd,Nicosia,Cyprus
3. International Hellenic University,Department of Computer Science,Kavala,Greece
4. Aristotle University of Thessaloniki,Department of Physics,Thessaloniki,Greece
5. Kingston University London,Department of Networks and Digital Media,Surrey,UK,KT1 2EE
6. University of Macedonia,Department of Applied Informatics,Thessaloniki,Greece
7. University of Peloponnese,Department of Informatics and Telecommunications,Tripolis,Greece