In this paper the problem of minimum cost communication network design is considered where the costs are piecewise linear concave. Several methods are compared: Simulated Annealing method, a heuristic based on the method proposed by Minoux, and a lagrangian method based on lower bounding procedure.

In this work, the issue of estimation reachable sets in continuous bimodal piecewise affine systems is studied. A new method proposed, framework ellipsoidal bounding, using quadratic Lyapunov functions. Although can be seen as a special class hybrid systems, reachability methods developed for might inappropriately complex dynamics. This work goes direction exploiting dynamical structure system ...

In this paper the problem of minimum cost communication network design is considered where the costs are piecewise linear concave. Several methods are compared: Simulated Annealing method, a heuristic based on the method proposed by Minoux, and a lagrangian method based on lower bounding procedure.

In this paper a numerical method for solving forth order fuzzy dierentialequations under generalized differentiability is proposed. This method is basedon the interpolating a solution by piecewise polynomial of degree 8 in the rangeof solution . We investigate the existence and uniqueness of solutions. Finally anumerical example is presented to illustrate the accuracy of the new technique.

background: diabetes mellitus is a metabolic disorder and its subsequent complications such as retinopathy, nephropathy, ulcers,disability, and amputation increase the burden of the disease. patient knowledge-improving programs are employed to prevent disease progression and to improve the quality of life of the patients. in this way, we need to characterize the groups of patients in urgent nee...

in this paper a numerical method for solving forth order fuzzy dierentialequations under generalized differentiability is proposed. this method is basedon the interpolating a solution by piecewise polynomial of degree 8 in the rangeof solution . we investigate the existence and uniqueness of solutions. finally anumerical example is presented to illustrate the accuracy of the new technique.