1. School of Computer Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
2. Faculty of Economics and Social Sciences, University of Potsdam, Potsdam, Germany
3. School of Computer Science, Universiti Sains Malaysia, Pulau Pinang, Malaysia
4. Management Technical College, Southern Technical University, Basrah, Iraq
5. Department of Corporate Communication, University of Malta, Msida, Malta