Dynamic Algorithms
Mostrando 13-24 de 170 artigos, teses e dissertações.
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13. Process-based simple model for simulating sugarcane growth and production
Dynamic simulation models can increase research efficiency and improve risk management of agriculture. Crop models are still little used for sugarcane (Saccharum spp.) because the lack of understanding of their capabilities and limitations, lack of experience in calibrating them, difficulties in evaluating and using models, and a general lack of model credib
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
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14. Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm
ABSTRACT: The success in developing modern aerospace systems addresses competitive subjects as optimization, reduced costs, sustainability, environment, weight, and safety. There is an increased demand for lighter materials such as laminated composites. In order to match the demand of aeronautical companies, the shell structures are very important. The dynam
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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15. Função de avaliação dinâmica em algoritmos genéticos aplicados na predição de estruturas tridimensionais de proteínas / Genetic Algorithms with Dynamic Fitness Functions Applied to Tridimensional Protein Structure Prediction
The protein structure prediction can be seen as an optimization problem where given an amino acid sequence, the tertiary protein structure must be found amongst many possible by obtaining energy functions minima. Many researchers have been proposing Evolutionary Computation strategies to find tridimensional structures of proteins; however results are not alw
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
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16. Evolving granular systems = : Sistemas granulares evolutivos / Sistemas granulares evolutivos
In recent years there has been increasing interest in computational modeling approaches to deal with real-world data streams. Methods and algorithms have been proposed to uncover meaningful knowledge from very large (often unbounded) data sets in principle with no apparent value. This thesis introduces a framework for evolving granular modeling of uncertain
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/07/2012
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17. ChipCflow - uma ferramenta para execução de algoritmos utilizando o modelo a fluxo de dados dinâmico em hardware reconfigurável / ChipCflow - a tool to executing algorithms using dynamic dataflow architecture in FPGA
Devido à complexidade das aplicações, a demanda crescente por sistemas que usam milhões de transistores e hardware complexo; tem sido desenvolvidas ferramentas que convertem C em Linguagem de Descrição de Hardware, tais como VHDL e Verilog. Neste contexto, esta tese apresenta o projeto ChipCflow, o qual usa arquitetura a fluxo de dados, para implementa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/06/2012
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18. Grafos evolutivos na modelagem e análise de redes dinâmicas / Evolving Graphs in the Modeling and Analysis of Dynamic Networks
Atualmente, muitas redes com características dinâmicas estão em funcionamento (por exemplo MANETs, DTNs, redes oportunistas, etc). Neste trabalho, estudamos um modelo para estas redes chamado de Grafos Evolutivos, que permite expressar a dinamicidade das conexões entre nós por meio de uma simples extensão da estrutura comum de grafos. Esta modelagem é
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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19. Análise e otimização da resposta em dinâmica de rotores
Great efforts are been made recently in order to diagnose vibrations in structures and equipments. Rotary machines require even greater attention, for they carry the risk of auto-excitation. This paper has as an objective the exposition a rotor dynamics methodology to minimize the response amplitude in the frequency domain. With this goal, the rotor is discr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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20. Novas metodologias para compressão de dados de processos e para o ajuste do Sistema PI
The consolidation of the automation in the chemical industry has brought a challenge: translating the large volume of data in useful information. With the advent of digital systems, the expansion in the development of sensors and sampling methods allowed the acquisition of a large amount of data from the process field. Thus, nowadays, engineers and operators
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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21. Otimização e dinâmica dos fluidos computacional aplicadas a turbinas eólicas
The present work consists in the application of optimization methods and computational fluid dynamics to wind turbines. The massive growth in renewable energies demands more powerful turbines and more accuracy in their design and analysis. This work has three objectives: optimization of an airfoil for wind turbines, simulation of a wind turbine airfoil in de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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22. Despacho online para o problema dinâmico de roteamento de veículos
The allocation of vehicles for a specific customers demand is subject to a combinatorial explosion of possibilities by the exponential increase of alternatives according to growth of the problem size. When environmental changes are considered, such as the advent of new customers, the Vehicle Routing Problem becomes dynamic and even more complex and unpredict
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2011
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23. Otimização topológica e paramétrica de vigas de concreto armado utilizando algoritmos genéticos. / Topology and shape optimization of concrete beams by genetic algorithms
This work presents a study and application using Genetic Algorithms (GAs) to solve problems that optimization structures, more specifically concrete beans. The GAs are search algorithms, non-deterministics that works with a population of solutions. Its inspired on the evolutions theory of the species to solve problems. In this dissertation sought to show the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
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24. Aprendizado não supervisionado de hierarquias de tópicos a partir de coleções textuais dinâmicas / Unsupervised learning of topic hierarchies from dynamic text collections
The need to extract new and useful knowledge from large textual collections has motivated researchs on Text Mining methods. Among the existing methods, initiatives for the knowledge organization by topic hierarchies are very popular. In the topic hierarchies, the knowledge is represented by topics and subtopics, and each topic contains documents of similar c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/05/2011