Non Smooth Optimization
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Estudo do aumento do desempenho de um sistema de tomografia de impedância elétrica através do método de otimização topológica. / Increasing electrial impedance tomography system performance through the topology optimization method.
Electrical Impedance Tomography images the interior of a body based on electrical quantities measured on the surface of it. Mathematically, the technique finds the electric admittivity distribution in a given body model which reproduces the boundary measurements of electric currents and potentials on electrodes attached to that body. Therefore, the admittivi
Publicado em: 2010
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2. Estimação não parametrica da trajetoria percorrrida por um veiculo autonomo / Non-parametric curve estimation of an autonomous vehicle trajectory
The objective of this study is to find a smooth function joining two points A and B with minimum length constrained to avoid fixed subsets. A penalized nonparametric method of finding the best path is proposed. The method is generalized to the situation where stochastic measurement errors are present. In this case, the proposed estimator is consistent, in th
Publicado em: 2008
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3. Análise de sensibilidade topológica de segunda ordem / Second order topological sensitivity analysis
The topological derivative provides the sensitivity of a given shape functional with respect to an infinitesimal non-smooth domain pertubation (insertion of hole or inclusion, for instance). Classically, this derivative comes from the second term of the topological asymptotic expansion, dealing only with inifinitesimal pertubations. However, for pratical app
Publicado em: 2008
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4. Nonlinear control system design using variable complexity modelling and multiobjective optimization
To design controllers for complex non-linear systems usually involves the use of expensive computational models. A non-linear thermodynamic model of a gas turbine engine is used to evaluate a selection of designs for a multivariable PI controller configuration. An approach using variable complexity modelling (VCM) is introduced to allow more designs to be ev
Sba: Controle & Automação Sociedade Brasileira de Automatica. Publicado em: 2006-03
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5. ANÁLISE CONVEXA E MÉTODOS LIFT-AND-PROJECT PARA PROGRAMAÇÃO INTEIRA / CONVEX ANALYSIS AND LIFT-AND-PROJECT METHODS FOR INTEGER PROGRAMMING / ANÁLISIS CONVEXA Y MÉTODOS LIFT-AND-PROJECT PARA PROGRAMACIÓN ENTERA
Algorithms for general 0-1 mixed integer programs can be successfully developed by using lift-and-project methods to generate cuts. Cuts are generated by solving a cut- generation-program that depends on a certain normalization. From a theoretical point of view, the good numerical behavior of these cuts is not completely understood yet, specially, concerning
Publicado em: 2001
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6. Optimization of an Escherichia coli formate dehydrogenase assay for selenium compounds.
A microbiological assay to detect different chemical compounds of selenium for potential future use in the study of the distribution of these chemical forms in foods is being developed. This assay is based on the detection, by infrared analysis, of CO2 in a culture of Escherichia coli when the bacteria are grown in the presence of various selenium compounds.