Hamiden Abd El-Wahed Khalifa received Ph.D degree from Tanta University Faculty of Science, Tanta, Gharbia Governorate, Egypt. Recently attached with Operations Research Department, Faculty of Graduate Studies for Statistical Research, Cairo University, Giza, Egypt, as Associate Professor. She is also attached with Department of Mathematics, College of Science and Arts, Al- Badaya, Qassim University, Saudi Arabia for research projects. She has published more than 50 publications in peer-reviewed journals. Her areas of interest are: Game Theory, Operation Research, Multi-objective linear programming, Fuzzy Mathematics, Rough Sets, Decision Making, Optimizations.