1. Phillip M. Drayer Department of Electrical and Computer Engineering, Lamar University, Beaumont, TX, USA
2. Department of Computer Science, Lamar University, Beaumont, TX, USA
3. School of Electronic Science and Engineering, Nanjing University, Nanjing, China
4. School of Management, Lanzhou University, Gansu, Lanzhou, China
5. Department of Electronics Engineering, University of Rome “Tor Vergata,”, Rome, Italy
6. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, China
7. IPNGROUP, McLean, VA, USA