A least-squares mixed finite element (LSMFE) method for the numerical solution of fourth-order elliptic equations is analyzed and developed in this paper. The a posteriori error estimator which is needed in the adaptive refinement algorithm is proposed. The local evaluation of the least-squares functional serves as a posteriori error estimator. The posteriori errors are effectively estimated.

This study seeks to identify, analyze and strengths of policies related to children with disabilities in Iran, the Islamic world and the international level From Sociological Point of view that can finally provide interventions to improve the situation of children with disabilities in Iran. Research method is qualitative and research approaches are also exploratory and content analysis. After i...