abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...

Investigating causal relations, symmetry and asymmetry leads to the correct understanding of policy makers for policy and planning purposes. Many studies have been conducted on the linear relationship between variables on the international level and in Iran, but these studies mainly focus on linear relationships. Since in Iran, the non-linear and asymmetric relationship between the energy consu...

Background & purpose: experience of life-threatening illnesses such as cancer leads to the comprehension of its positive outcomes along with its negative consequences. The purpose of this study was to examine the curve linear and linear relationship between post-traumatic growth dimensions and post-traumatic stress symptoms in cancer patients. Materials & Methods: The present study was a descri...