Affiliation: | 1.Chair of Pervasive and Mobile Computing, Collage of Computer and Information Sciences, King Saud University, Riyadh, 11543, Saudi Arabia ;2.Department of Software Engineering, College of Computer and Information Sciences, King Saud University, Riyadh, 11543, Saudi Arabia ;3.Department of Computer Science, University of Prince Muqrin , Madinah al munawarah, Saudi Arabia ; |