Optimal Classification
Mostrando 25-36 de 66 artigos, teses e dissertações.
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25. Impacto de condicionantes hidrológicas na definição de traçados rodoviários : aplicação na rodovia TO-247
The contribution of this research is given by the design of effective impacts of highways, through the expansion of the influence areas beyond the linear tracks, adding the assessment of the environmental sensitivity of watersheds in order to optimize the layout of road projects. It was produced an orderly and systematic approach of the cause and consequence
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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26. The single machine earliness and tardiness scheduling problem: lower bounds and a branch-and-bound algorithm
This paper addresses the single machine scheduling problem with a common due date aiming to minimize earliness and tardiness penalties. Due to its complexity, most of the previous studies in the literature deal with this problem using heuristics and metaheuristics approaches. With the intention of contributing to the study of this problem, a branch-and-bound
Computational & Applied Mathematics. Publicado em: 2010-06
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27. Combinação de modelos de campos aleatórios markovianos para classificação contextual de imagens multiespectrais / Combining markov random field models for multispectral image contextual classification
This work presents a novel MAP-MRF approach for multispectral image contextual classification by combining higher-order Markov Random Field models. The statistical modeling follows the Bayesian paradigm, with the definition of a multispectral Gaussian Markov Random Field model for the observations and a Potts MRF model to represent the a priori knowledge. In
Publicado em: 2010
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28. Constructions of algebraic lattices
In this work we present constructions of algebraic lattices in Euclidean space with optimal center density in dimensions 2, 3, 4, 6, 8 and 12, which are rotated versions of the lattices Λn, for n = 2,3,4,6,8 and K12. These algebraic lattices are constructed through twisted canonical homomorphism via ideals of a ring of algebraic integers. Mathematical subje
Computational & Applied Mathematics. Publicado em: 2010
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29. An iterative method for solving a kind of constrained linear matrix equations system
In this paper, an iterative method is constructed to solve the following constrained linear matrix equations system: [A1(X),A2(X),... ,Ar(X)]=[E1,E2, ... ,Er ], X ∈ I={X |X= U(X)}, where Ai is a linear operator from Cmxn onto Cpixqi, Ei ∈ Cpixqi, i=1 , 2,..., r , and U is a linear self-conjugate involution operator. When the above constrained matrix equa
Computational & Applied Mathematics. Publicado em: 2009
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30. Agendamento otimizado das atividades de colheita de madeira em plantios de eucaliptos sob restrições operacionais, espaciais e de risco climático / Optimized harvest scheduling in eucalyptus plantations under operational, spatial and climatic risk constraints
Sustainability concerns in forest-based industries, as related to environmental, social and economic aspects, have been highlighted with crescent realism. Therefore, forest management plans must consider a greater level of details when analyzing and understanding the interaction among these aspects to prevent possible future impacts. At the tactical and oper
Publicado em: 2009
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31. Evaluation of optimal and suboptimal feature selection methods applied to image textures / Avaliação de métodos ótimos e subótimos de seleção de características de texturas em imagens
Texture features are eficient image descriptors and can be employed in a wide range of applications, such as classification and segmentation. However, when the number of features is considerably high, pattern recognition tasks may be compromised. Feature selection helps prevent this problem, as it can be used to reduce data dimensionality and reveal features
Publicado em: 2008
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32. Comportamento do hidrociclone filtrante frente às modificações no diâmetro de underflow e no tubo de vortex finder
Filtering hydrocyclones are similar equipaments to the conventional hydrocyclone except by the fact they have filtering conical region. In this way, during the operation of this equipament, besides the feed streams, the underflow and the overflow, observed commonly, the porous conical region produces liquid by the filtration process. The filtration in the co
Publicado em: 2008
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33. PLANEJAMENTO EXPERIMENTAL E AVALIAÇÃO METROLÓGICA DA PRODUÇÃO DE LIPASES POR YARROWIA LIPOLYTICA / EXPERIMENTAL DESIGN AND METROLOGICAL EVALUATION OF LIPASE PRODUCTION BY YARROWIA LIPOLYTICA
Objective: Optimization of lipase production by Yarrowia lipolytica cells through experimental design and evaluation of metrological aspects related to process. Motivation: Although several published papers are found describing lipase production by microorganisms, few of them refer to process optimization through experimental design and none of them refer to
Publicado em: 2007
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34. Análise de conteúdo de vídeo por meio de aprendizado ativo
Advances in compression techniques, decreasing cost of storage, and high-speed transmission have facilitated the way videos are created, stored and distributed. As a consequence, videos are now being used in many applications areas. The increase in the amount of video data deployed and used in today s applications reveals not only the importance as multimedi
Publicado em: 2007
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35. Sampling of tree species diversity in tropical forests: patterns and limitations of some measures / Amostragem da diversidade de espécies arbóreas em florestas tropicais: padrões e limitações de algumas medidas
The description of species accumulation patterns with the increase of sampled area using the species accumulation curve has many applications to plant community studies. The use of this relation as a tool to determine the sampling sufficiency in phytosociological studies, therefore, shows methodological problems such as the arbitrariness in the order of samp
Publicado em: 2007
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36. Integration of economic and financial analysis to decision support systems of charging fees, water-use rights and classification of bodies of water on the water resources field : application to the Descoberto lake basin in Federal District, Brazil / Integração de Análise Econômica e Financeira a Sistemas de Apoio a Decisão de Enquadramento, Outorga e Cobrança de Recursos Hídricos: Aplicação à Bacia da Barragem do Rio Descoberto no Distrito Federal
The implementation of the instruments foreseen in the National Water Resources Policy Act represents a great advance for the modernization of the sector. However many doubts, distrusts and fidgets persist. The questions mention the reach to the objectives established in the Federal Law nr. 9.433 (January 8th, 1997), concerning the destination of the resource
Publicado em: 2006