1. Western Norway University of Applied Sciences,Department of Computer Science, Electrical Engineering and Mathematical Sciences,Førde,Norway
2. Volda University Collage,Department of Humanities and Education,Volda,Norway
3. Silesian University of Technology,Department of Distributed Systems and Informatics Devices,Gliwice,Poland
4. Western Norway University of Applied Sciences,Department of Computer Science, Electrical Engineering and Mathematical Sciences,Bergen,Norway