Non Convex Optimization
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. A Heuristic Algorithm Based on Line-up Competition and Generalized Pattern Search for Solving Integer and Mixed Integer Non-linear Optimization Problems
Abstract The global optimization of integer and mixed integer non-linear problems has a lot of applications in engineering. In this paper a heuristic algorithm is developed using line-up competition and generalized pattern search to solve integer and mixed integer non-linear optimization problems subjected to various linear or nonlinear constraints. Due to i
Lat. Am. j. solids struct.. Publicado em: 2016-02
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2. Convergência do Método do Ponto Proximal para Funções que Satisfazem a Desigualdade de Łojasiewicz / Convergence of the Proximal Point Method for functions that satisfy the inequality of Lojasiewicz
Neste trabalho é feita uma análise de convergência do Método do Ponto Proximal para funções não necessariamente convexas que satisfazem a desigualdade de Łojasiewicz.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2012
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3. Algoritmos para problemas de corte e empacotamento / Algorithms for cutting and packing problems
Several versions of Cutting and Packing problems are considered NP-hard and, if we consider that P ¿ NP, we do not have any exact polynomial algorithm for solve them. Practical applications arises for such problems and include: resources allocation for computers; cut of steel, wood, glass, aluminum, etc.; packing of objects; and, loading objects into contai
Publicado em: 2010
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4. Optimization of hybrid laminated composites using a genetic algorithm
This work aims at developing a genetic algorithm (GA) to pursue the optimization of hybrid laminated composite structures. Fiber orientation (predefined ply angles), material (glass-epoxy or carbon-epoxy layer) and total number of plies are considered as design variables. The GA is chosen as an optimization tool because of its ability to deal with non-convex
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-09
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5. Control of dynamic systems : absolute stability, saturation and bilinearity / Controle de sistemas dinamicos : estabilidade absoluta, saturação e bilinearidade
This thesis presents contributions to the solution of the problems of stability analysis and synthesis of state feedback controllers for dynamic systems with non-linear elements, by means of conditions based on linear matrix inequalities and Lyapunov functions. For switched systems subject to saturation in the actuators, convex conditions to design switched
Publicado em: 2009
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6. A software for parameter estimation in dynamic models
A common problem in dynamic systems is to determine parameters in an equation used to represent experimental data. The goal is to determine the values of model parameters that provide the best fit to measured data, generally based on some type of least squares or maximum likelihood criterion. In the most general case, this requires the solution of a nonlinea
Brazilian Journal of Chemical Engineering. Publicado em: 2008-12
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7. Sistema imunologico artificial para otimização multiobjetivo / Artificial immune system for multiobjetive optimization
The aim of this work is to explore an Artificial Immune System, based on the Clonal Selection principle, in the solution of Multiobjective Optimization problems. Artificial Immune Systems have, in their elementary structure, the main characteristics required to solve Multiobjective Optimization problems: exploration, exploitation, paralelism, elitism, memory
Publicado em: 2008
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8. Angular analysis of two classes of non-polyhedral convex cones: the point of view of optimization theory
There are three related concepts that arise in connection with the angular analysis of a convex cone: antipodality, criticality, and Nash equilibria. These concepts are geometric in nature but they can also be approached from the perspective of optimization theory. A detailed angular analysis of polyhedral convex cones has been carried out in a recent work o
Computational & Applied Mathematics. Publicado em: 2007
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9. Convex formularizations for robust H2 control problems relative to non-parametric pertubations / Formulações convexas para problemas de controle H2 - robusto relativo a pertubações não-paramétricas
In this work, performance analysis and control synthesis for good performance are studied for systems subject to non-parametric perturbations which satisfy a prescribed norm bound. First, the performance analysis problem is considered for a given controller that ensures robust stability in presence of such perturbations.. The performance index used is the so
Publicado em: 2006
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10. Resolução do problema de programação matematica com restrições de equilibrio usando restauração inexada / Resolution of mathematical program with equilibrium constraints using inexact restauration
A Mathematical Program with Equilibrium Constraints (MPEC) is an optimization problem, where part of the variables are constrained to be solutions of a variational inequality problem parameterized by the other variables. The reformulation of a MPEC, as a classical optimizatlon problem, replacing the variational inequality problem by corresponding the K.K. T
Publicado em: 2006
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11. BID-BASED STRATEGIES FOR HYDRO PLANTS IN A MULTI-STAGE AND STOCHASTIC FRAMEWORK / ESTRATÉGIA DE OFERTA DE AGENTES HIDROELÉTRICOS SOB INCERTEZA E MÚLTIPLOS ESTÁGIOS
The objective of this work is to present a methodology for the strategic bidding (or bid-based) problem of a hydropower based company, taking into account multiple hydro plants, time-coupling, multiple inflow scenarios and illustrate its application for real case studies. It is initially show that the bid-based dispatch for a hydro plant can be formulated as
Publicado em: 2004
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12. Otimização extrema generalizada: um novo algoritmo estocástico para o projeto ótimo / x
In this work a new numerical tool for application on optimal design is presented. Based on the theory of Self-Organized Criticality (SOC), it is intended to be used in problems that present complex characteristics such as a non-convex or even disjoint design space, the presence of multiple sub-optimal solutions on it, severe non-linearities on the objective
Publicado em: 2002