By Filippychev D.S.

We give some thought to the asymptotic resolution of the plasma-sheath integro-differential equation, that is singularly perturbed end result of the presence of a small coefficient multiplying the top order (second) by-product. The asymptotic answer is got by way of the boundary functionality technique. A second-order differential equation is derived describing the habit of the zeroth-order boundary features. A numerical set of rules for this equation is mentioned.

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Computational Experiments The algorithm was tested on a number of problem instances with varying n and m. , with convex quadratic objective function. Table 3 reports the computational results for the problem (OE) with linear-fractional criteria. In all the test problems g(x) is taken to be 0. - Chapter 1: Optimization under Composite Monotonic Constraints 29 Table 1 Prob. 613 References 1. T. T. M. Thanh: 'Optimizing a monotonic function over the Pareto set', Preprint, Department of Applied Mathematics and Informatics, Institute of Technology, Hanoi, 2004.

R u Summary. In this paper we propose two variants of Local Search Method for reverse convex problems. The first is based on well-known theorem of H. Tuy as well as on Linearization Principle. The second variant is due to an idea of J. Rosen. We demonstrate the practical effectiveness of the proposed methods computationally. Key words: Nonconvex optimization, reverse convex problem, local search, computational testing. 1 Introduction The present situation in Continuous Nonconvex Optimization may be viewed as dominated by methods transferred from other sciences [I]-[3],as Discrete Optimization (Branch&Bound, cuts methods, outside and inside approximations, vertex enumeration and so on), Physics, Chemistry (simulated annealing methods), Biology (genetic and ant colony algorithms) etc.

Applyication of special conceptual global search methods (strategies). 4. Using the experience of similar nonconvex problems solving to construct pertinent approximations of level surfaces of corresponding convex functions. 5. Application of convex optimization methods for solving linearized problems and within special local search methods. This approach lifts Classical Convex Optimization to a higher level, where the effectiveness and the speed of the methods become of paramount importance not only for Convex Optimization, but for Nonconvex problems (in particular for RCP, which is discussed below).