in many infeasible linear programs it is important to construct it to a feasible problem with a minimum pa-rameters changing corresponding to a given nonnegative vector. this paper defines a new inverse problem, called “inverse feasible problem”. for a given infeasible polyhedron and an n-vector a minimum perturba-tion on the parameters can be applied and then a feasible polyhedron is concluded.

today, the motorcycle riders in the streets as traffic congestion have become a challenge. if we do not have planning and scientific management for this problem, consequently the volume of traffic and accidents, crime, social damages will be increased. considering the importance of the issues, identify and assess the factors promote traffic safety, reduce crime and social problems with motorcyc...

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The fleet assignment problem (FAP) assigns the type of airplane at each flight segment. Since airplane is an expensive resource, poor fleet assignment can cause a great increase in costs of airlines. There are so many consideration which should be tackled in formulation of a FAP problem, especially the parameters regarding to the airplanes. This paper presents a novel, mixed integer programing ...

decision making and problem solving are especially important skills for business and life. as an innovation leading corporate, sony has gradually lost their superiority in innovation and core competences under more and more intensive competition environment. this report is made to investigate sony current procedure on its solving problems and making decision, analyze approaches and tools used b...

the aim of this paper is to introduce a new approach for obtaining the numerical solution of singulary perturbed boundary value problems based on an optimal control technique. in the proposed method, first the mentioned equations are converted to an optimal control problem. then, control and state variables are approximated by chebychev series. therefore, the optimal control problem is reduced ...