1. Department of Computer Science, Faculty of Science & Information Technology, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan,
2. Department of Computer & Information Sciences, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, NE2 1XE, UK,
3. Department of Computer Science, Faculty of Science & Information Technology, Al-Zaytoonah University of Jordan, P.O.Box 130, Amman 11733, Jordan,
4. Department of Computer Science and Information System, College of Business Studies, The Public Authority for Applied Education and Training, Kuwait City, Kuwait