170 resultados para [INFO] Computer Science [cs]


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Connectivity is the basic factor for the proper operation of any wireless network. In a mobile wireless sensor network it is a challenge for applications and protocols to deal with connectivity problems, as links might get up and down frequently. In these scenarios, having knowledge of the node remaining connectivity time could both improve the performance of the protocols (e.g. handoff mechanisms) and save possible scarce nodes resources (CPU, bandwidth, and energy) by preventing unfruitful transmissions. The current paper provides a solution called Genetic Machine Learning Algorithm (GMLA) to forecast the remainder connectivity time in mobile environments. It consists in combining Classifier Systems with a Markov chain model of the RF link quality. The main advantage of using an evolutionary approach is that the Markov model parameters can be discovered on-the-fly, making it possible to cope with unknown environments and mobility patterns. Simulation results show that the proposal is a very suitable solution, as it overcomes the performance obtained by similar approaches.

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s-graduação em Geociências e Meio Ambiente - IGCE

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This study investigated, by descriptive documental research, the intervention models in Sexual Education in the school with the participation of the family and use of new technologies. The methodological stages were: collects in bases of data, selection and reading of the studies and elaboration of thematic groupings, by the content analysis. Four thematic group were elaborated: 1) intervention models with professionals; 2) intervention models with adolescents; 3) intervention models with the direct participation of the family and 4) Appreciation of the family’s participation in sexual education. The analised articles prioritize the adolescent population, when descrive the intervention. Few studies consider the family as important to sexual education and the techniques of the computer science are not very explored as pedagogic resources.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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s-graduação em Matematica Aplicada e Computacional - FCT

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Cienfico e Tecnológico (CNPq)