The main goal of this paper is to study the following combinatorial problem.given a finite set E={e1,e2,…em} and a subset familly σ={S1,S2,…,Sn}of E,does the
The concept of aging, which is very users in relability describes the adverse orbeneficial effects of age on the lifetime of systems. Several partial orderings
In this paper,the boundary stabiligstion of tbe Timoshenko equation of a nononiform beam,with clarrmped boundary condition at one end and witb bending moment an
Abstract. On the basis of classification of geographical properties a rolling development goal programming model is formulated in correspondence with the ecopat