Generalized Networks
Mostrando 13-24 de 35 artigos, teses e dissertações.
-
13. SMOOTH TRANSITION LOGISTIC REGRESSION MODEL TREE / MODELO DE REGRESSÃO LOGÍSTICA COM TRANSIÇÃO SUAVE ESTRUTURADO POR ÁRVORE (STLR-TREE)
The main goal of this work is to adapt the STR-Tree model, which is the combination of a Smooth Transition with Regression model with Classi cation and Regression Tree (CART), in order to use it in Classification. Some changes were made in its structural form and in the estimation. Due to the fact we are doing binary dependent variables classification, is ne
Publicado em: 2008
-
14. Generalização espaço-temporal de redes neurais artificiais para classificação do uso e cobertura do solo da região de Miguelópolis-SP / Spectral-temporal generalized artificial neural networks for classification landscover of Miguelópolis-SP
A classificação de imagens de satélites subsidia na identificação e extração de informações possibilitando a produção de novos mapas contendo informações específicas, que auxiliam em pesquisas ambientais relacionadas às distintas linhas de pesquisas. Toda classificação executa uma generalização espacial, no entanto, a generalização tempo
Publicado em: 2008
-
15. Three-phase generalized state estimation / Estimação de estado generalizada trifasica
Since its introduction in 1969 by Fred C. Schweppe, J. Wildes and D. Rom, the power system state estimation has been widely studied. The state estimation is evolving to a more detailed modeling, which considers state variables not commonly used in bus/branch system modeling. A generalized state estimation model, in which switches and circuit breakers are rep
Publicado em: 2007
-
16. Optimization procedures for establishing reserve networks for biodiversity conservation taking into account population genetic structure
Conservation genetics has been focused on the ecological and evolutionary persistence of targets (species or other intraspecific units), especially when dealing with narrow-ranged species, and no generalized solution regarding the problem of where to concentrate conservation efforts for multiple genetic targets has yet been achieved. Broadly distributed and
Genetics and Molecular Biology. Publicado em: 2006
-
17. Application of open queueing network models for the design and planning of discrete manufacturing systems. / Aplicação de modelos de redes de filas abertas no projeto e planejamento de sistemas discretos de manufatura.
The management of manufacturing systems have become more complex, once that new products are arising, product demands are uncertain, life cycles get shorter, and a wide variety of products compete for common resources. This thesis deals with the design and planning of discrete manufacturing systems, based on open queueing network models to support the decisi
Publicado em: 2005
-
18. STRUCTURES AND ALGORITHMS FOR MULTIUSER DETECTION AND INTERFERENCE SUPRESSION IN DS-CDMA SYSTEMS / ESTRUTURAS E ALGORITMOS PARA DETECÇÃO MULTIUSUÁRIO E SUPRESSÃO DE INTERFERÊNCIA EM SISTEMAS DS-CDMA
This thesis presents new structures and algorithms for multiuser detection and interference suppression in DS-CDMA systems. Structures based on recurrent neural networks are investigated for decision feedback receivers and adaptive algorithms are developed for combatting multiple access interference and intersymbol interference. New algorithms based on the m
Publicado em: 2004
-
19. Sistematização crítica das tendências de padronização de arquiteturas e protocolos em redes ópticas / Critic sistematization of standardization tendencies of the architectures and protocols in optical networks
The main objective of this work is to analyze the evolution trends for the architecture of the optical networks, discuss the state of the art protocols required for its development and evaluate the various efforts being carried out by different institutions in order to achieve standardization. In this context, optical networks are those in which the dominant
Publicado em: 2003
-
20. A coputational environment for spatial dynamic modeling / Ambiente computacional para modelagem dinâmica espacial
This thesis introduces TerraML, a computational environment for spatial dynamic modeling, to be used in environmental applications. TerraML represents space as a cellular model. In TerraML the discrete and continuous elements of a dynamic system are translated into control modes, flow and jump conditions, based on the hybrid automata theory. In order to capt
Publicado em: 2003
-
21. Detecção e diagnostico de falhas em sistemas de processos quimicos. Importancia do conhecimento de estados intermediarios de processos dinamicos. Desenvolvimento de uma metodologia baseada em redes neurais
Artificial Neural Networks (ANN) have demonstrated excellent performance in automatic fault detection and diagnosis in many engineering applications. The great problem when using neural networks, is that neural networks perform only as robustly as the data from which they are trained. This means that is necessary to use as much data as possible in order to c
Publicado em: 2000
-
22. Conservação de energia eletrica em sistemas publicos de abastecimento de agua : otimização operacional da rede de Macapa
This work presents a modeI to optirnize the daily operational strategy of pumping in water supply systems with the objective of minirnizing the electrical energy use and cost. The modeI performs spatial and temporal analyses on the system to optirnizethe pumps switching, considering a daily horizon of programming with discrete intervals of three hours. The o
Publicado em: 1999
-
23. Otimização da expansão de um sistema energetico usando grafos generalizados : estudo de caso da Bolivia
This work studies the long term expansion system. The system has two suplier networks: the and the natural gas network. The coordinated expansion has been possible because both networks are coupled through the natural gas thermal plants. The simple-cycle and combined-cicle plants are included in the evaluation scenery from 2010 year, besides the hydroelectri
Publicado em: 1993
-
24. MODELING AND GENERALIZED ANALISYS OF MULTIPLE ACCESS PROTOCOLS FOR MULTI-PACKET DATA NETWORKS / MODELAGEM E ANÁLISE GENERLIZADA DE PROTOCOLOS DE ACESSO AO CANAL DE TRANSMISSÃO EM REDES DE DADOS COM MENSAGENS MULTI-PACOTE
O desempenho de protocolos de múltiplos acesso em redes de dados, no que diz respeito a parâmetros como vazão, retardado e probabilidade de rejeição de pacotes, representa um dos fatores primordiais na comparação entre diversos tipos de sistemas propostos, no sentido de se buscar uma otimização do uso do canal de transmissão. Tendo em vista a dific
Publicado em: 1993