1. Department of Physics, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
2. Department of Computer Science, School of Computing and Mathematical Sciences, University of Waikato, Hamilton, New Zealand
3. Department of Electronic Engineering, School of Engineering/Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo, Japan
4. Graduate School of Engineering, Mie University, Tsu, Mie, Japan