5 results for “S. F. Tantawy”

Research ArticleOpen accessIn the author namesUsing Feasible Direction to Find All Alternative Extreme Optimal Points for Linear Programming ProblemS. F. TantawyWe presented a feasible direction method to find all optimal extreme points for the linear programming problem. Our method depends on the conjugate gradient projection method starting with an initial point we generate a sequence of feasible directions towards all alternative extremes. …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 7,065 accessesView PDF Cite

Research ArticleOpen accessIn the author namesDetecting Non-Dominated Extreme Points for Multiple Objective Linear ProgrammingS. F. TantawyEfficient extreme points in decision space of multiple objective linear programming (MOLP) may not map to non dominated extreme points in objective space under the linear mapping, condition that efficient extreme points have a non dominated extreme is given, the important of this study is that the decision-Maker may depends on extreme points of the set of the objective space … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 6,865 accessesView PDF Cite

Research ArticleOpen accessIn the author namesOn Selecting &#34r&#34 Items From &#34m&#34 Independent GroupsEzz H. Abdelfattah, Mohamed Hafez, Said F. Tantawydoesn’t consider the competition “between” these groups, but it only considers the competition “within” the groups. In this study we discuss the selection by considering the competition with both between and within the groups, by using a Linear Programming (LP) approach and depending on the True Position (TP) introduced by Abdelfattah [1], which depends on rescaling the data for each … …Journal of Mathematics and Statistics, Vol. 1, Issue 2 · 30 Jun 2005 · 6,057 accessesView PDF Cite