1. Faculty of Computer Science Bialystok, University of Technology, ul. Wiejska 45 A, 15-351 Bialystok, Poland
2. Department of Electronics and Computation Sciences, Universidad de la Costa, Barranquilla 080002, Colombia
3. Faculty of Systems Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino 191-0065, Japan