G.M. Behery is an associative professor in the Department of Maths. and Computer Science, Damietta, Faculty of Science, Mansoura University. He received his B.Sc. degree in Computer Science from the Faculty of science, Suez Canal University, his M.Sc. degree in computer science from Damietta, faculty of science at Mansoura University, and Ph.D. in computer science from Germany/Egypt (Erlangen University/Mansoura University). His research interests include neural networks, image processing, artificial intelligent, fuzzy logic, data structure, and OS. Address: Department of Maths., Faculty of Science, New Damietta 34517. email: behery2911961@yahoo.com