1. University of Western Macedonia,Department of Electrical and Computer Engineering,Kozani,Greece
2. MetaMind Innovations P.C.,R&D Department,Kozani,Greece
3. Kingston University,Department of Networks and Digital Media,Kingston Upon Thames,United Kingdom
4. International Hellenic University,Department of Computer Science,Greece
5. Aritostle University of Thessaloniki,Physics Department,Thessaloniki,Greece
6. University of Macedonia,School of Information Sciences,Department of Applied Informatics,Thessaloniki,Greece