1. School of Computer Science & Engineering, Kyungpook National University, Daegu, Republic of Korea
2. Universidad Politécnica de Valencia, Camino de Vera, S/N, 46022 Valencia, Spain
3. South Dakota State University, DEH (Old ECS) 123, Brookings, SD 57007, USA
4. Department of Informatics, Electronic and Sistemistic, University of Calabria, Italy
5. Department of Electrical and Computer Engineering, Lawrence Technological University, South field, MI 48075, USA