Browsing by Subject "Ciência da computação"
Now showing items 1-20 of 71
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Uma abordagem de segmentação de placas de automóveis baseada em morfologia matemática
| Posted on: 02 jun. 2006The localization of the plate of automobile license is an instance of the problem of detection of interest regions. Being this stage the main limiter in the recognition of plates, since not the detention of the plate or ... -
Algoritmos aproximados para o problema do maior conjunto controlado generalizado
| Posted on: 22 jul. 2005 -
Algoritmos evolutivos eficientes para um problema de roteamento de veículo
This work proposes solutions for enhancing the performance of evolutionary algorithms (EAs). The EAs and, in particular, the genetic algorithms (GAs), although very well known, are not reaching comparably better results ... -
Algoritmos evolutivos para o problema de clusterização de grafos orientados: desenvolvimento e análise experimental
In this work, new proposals to improve genetic algorithms are presented. In order to do that, a classic genetic algorithm (AGT), which was obtained from the literature for the solution of automatic clustering problem applied ... -
Algoritmos para atualização de árvores geradoras mínimas em grafos dinâmicos
| Posted on: 07 ago. 2006The Dynamic Minimum Spanning Tree Problem (DMSTP) is that of maintaining a minimum spanning tree (MST) of a dynamically changing graph, where these changes (or operations) can be insertions and deletions of vertices, ... -
Algoritmos para o problema da árvore geradora mínima generalizado
| Posted on: 04 mai. 2007 -
Alocação de pontos de medição para a supervisão de redes de distribuição de energia elétrica
| Posted on: 11 mar. 2005More and more consumers of electric energy have demanded a service of better quality and greater reliability. Thus the operation of distribution systems has become even more complex, leading to the implementation of advanced ... -
Análise da informação mútua em seqüências de DNA homólogas
In this dissertation, we describe a method for estimating the amount of mutual information of homologous DNA sequences, i. e., the information contained in a DNA sequence that can be used to identify homologous blocks that ... -
Análise de heurísticas GRASP para o Problema da Diversidade Máxima
The Maximum Diversity Problem (MDP) consists of selecting elements from some large collection such that the selected elements have the most possible diversity among them. There are many applications that can be solved using ... -
Análise de múltiplas fontes VoIP adaptativas
| Posted on: 15 mar. 2007This work performs an analysis of several VoIP sources, where the sources are capable of adapting their transmission rates. This analysis is based on the network parameters (packet loss rate, end-to-end delay and jitter), ... -
Aplicativo computacional para avaliação de diferenças nos dados de entrada de estudos de fluxo de potência
| Posted on: 13 nov. 2007Power flow study, also known as load flow, is one of the most important in the power system analysis. In fact, its correct implementation serves as a base for the guarantee of quality, reliability, sustainability and ... -
Uma arquitetura de distribuição dinâmica de tarefas entre CPU e GPU em jogos digitais
| Posted on: 31 jul. 2007Graphic Unit Processors (GPU) are evolving constantly. Recently, they are converging to technology that allow others tasks, different from typically computer graphic one, to be executed. This has created a new computer ... -
Uma arquitetura de motor de física para games 3D com processamento híbrido entre CPU e GPU e distribuição dinâmica de carga
| Posted on: 21 dez. 2007The realism in 3D games, virtual reality and simulations are trespassing by a fast evolution, requiring each time more power from the computer processing. The physics engines, necessary for giving physics reality, require ... -
Arredondamento randômico e o problema da seqüência mais próxima
In this work, we first present some basic concepts and definitions normally used in molecular biology. They are used, in order to describe some of most important combinatorial problems posed by the biologists. We will give ... -
Aspectos computacionais do cálculo de dispersão de calor em meios porosos
| Posted on: 19 set. 2007This work examines some aspects of a computational implementation of the calculation of dispersion of heat in a periodic, undeformable and threedimensional porous media. -
Uma avaliação da abordagem MDA através de um estudo de caso
The evolution of programming languages shows a constant raising in the level of abstraction, stimulated by the need for higher productivity in the creation and maintenance of computer systems. In spite of this evolution, ... -
Avaliação e implementação de uma variação do protocolo TCP, projetada para redes de alto desempenho, visando à distribuição de objetos multimídia nas unidades de armazenamento do servidor Rio
The objective of this work was to study the behavior variations of the TCP protocol that were designed to perform in high speed networks. For this, we investigated if the TCP can become advantageous, in relation to UDP, ... -
Closeau : um modelo para classificação e controle de agentes pessoais computacionais
Personal computer agents have increasingly played an important role assisting people to accomplish ordinary tasks, such as text editing and e-mail handling. In spite of their potential benefit, they can also be inconvenient ... -
Combinando imagem e som para detecção de transições em vídeos digitais
The large and growing volume of digital applications, such as video indexing, retrieving, analysis, compression, storing and data transmission, have being accomplished based on scene transition detection, sometimes ...