This paper proposes the resolution of the optimal reactive dispatch (ORD) problem for the combined objective of minimizing active power losses and voltage profile improvement on load buses considering discrete variabl...
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We study a nonlinear knapsack problem whose objective function consists of the difference between a linear function of the variables and a general nonlinear function of another linear function of the variables. The sp...
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We study a nonlinear knapsack problem whose objective function consists of the difference between a linear function of the variables and a general nonlinear function of another linear function of the variables. The special structure of this problem allows us to provide a bound on the number of fractional variables in an optimal solution and analysis of the KKT conditions leads to an effective solution method. We develop a condition under which our method is efficient and show that if this condition is violated, determining the optimal solution with the fewest number of fractional variables is NP-hard.
This paper introduces a new multiplier algorithm that can be used to solve the problems of nonlinear programming with inequality constraints. It first transforms the original problem of an inequality constraint into a...
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A new approach to solving the Optimal Power Flow problem is described, making use of some recent findings, especially in the area of primal-dual methods for complex programming. In this approach, equality constraints ...
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The problem of performance optimization of a maneuvering re-entry vehicle is studied. The objective is to determine an optimal steering law for a high lift-to-drag ratio vehicle. An optimization criteria is derived th...
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We consider a problem of mediated group decision making where a number of agents provide a preference function over a set of alternatives. Then, using such information, a new agent provides its own preferences, and, a...
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The paper presents a Sequential TRajectory Optimization Method (STROM) to solve the aeroassisted orbital transfer problem in connection with most realistic physical boundary conditions. The complete exo-/endoatmospher...
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To better understand the Earth environment and climate change, to mitigate its effects and to provide emergency services, ensuring civil security, future European Earth observation (EO) infrastructures will heavily re...
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In this paper, a numerical procedure for plastic limit analysis of 3-D elastic-perfectly plastic bodies under complex loads is presented. The method is based on the lower-bound limit theorem and von Mises yield criter...
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Multi-objective optimal operation is an integral part of studying a power system. In this paper, a more practical and all-round multi-objective optimal model is developed. In objectives, some factors such as environme...
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