1. Department of Information Systems, Sohag University, Sohag 82524, Egypt
2. Institute for Information Technology and Communications (IIKT), Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
3. Department of Information Technology, Faculty of Computers and Information, Sohag University, Sohag 82524, Egypt
4. Department of Mathematics, Faculty of Science, South Valley University, Qena 83511, Egypt