Real Time Communications
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Hipóteses, delineamento e instrumentos do Estudo Educatel, Brasil, 2015/2016
O Estudo Educatel 2015/2016 foi delineado para avaliar a saúde e as condições do trabalho realizado nas escolas, de uma amostra representativa dos 2.220.000 professores que atuavam na Educação Básica no Brasil. O objetivo do artigo foi descrever as bases e o delineamento da pesquisa telefônica, que utilizou questionário composto por 54 perguntas curt
Cad. Saúde Pública. Publicado em: 15/04/2019
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2. Processos interacionais na Internet: análise da conversação digital / Interactional processes on the Internet: analysis of digital conversation
The emergence of the Internet sparked a revolution regarding to new forms of interaction between people, offering experiences of real-time communication, in the so-called virtual environments. In this scenario, new text genres emerge, opening up new possibilities for analysis from various perspectives. In this work, our study object is the digital conversati
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2012
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3. Estratégias de controle dinâmico de caminhos ópticos sobre redes fotônicas WDM utilizando inteligência de enxame. / Strategies for dynamic lightpath control in WDM photonic networks using swarm intelligence.
A fundamental aspect of photonic networks based on wavelength division multiplexing (WDM) technology is the control of optical paths. An optical path, or lightpath, is a purely optical connection established between two network nodes, which can pass through several intermediate nodes. To efficiently support the demands required from a WDM network that runs h
Publicado em: 2011
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4. Group Sequential Communication (GSC): Especificação e Análise de Desempenho de umMecanismo de Comunicação de Tempo Real Compatível ao Padrão IEEE 802.11/11e Aplicado à Automação Industrial
Esta tese propõe a especificação e análise de desempenho de um mecanismo de comunicação de tempo real compatível com o Padrão IEEE 802.11/11e, chamado Group Sequential Communication (GSC). O GSC apresenta um melhor desempenho quando comparado ao mecanismo HCCA para tratar pequenos pacotes de dados, além de adotar uma abordagem descentralizada do con
Publicado em: 2010
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5. POLARIZATION OF LIGHT CONTROL IN MONOMODE OPTICAL FIBERS AND APLICATIONS / CONTROLE DA POLARIZAÇÃO DA LUZ EM FIBRAS ÓPTICAS MONOMODO E APLICAÇÕES
The control of polarization state, as well as a control of all states of polarization of a light signal travelling through a singlemode optical fiber, is performed using different schemes. The polarization control of the signal in a DWDM channel is performed using reference signals in lateral channels in real time. A polarization encoded quantum key distribu
Publicado em: 2009
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6. Uma anÃlise comparativa dos codificadores/ decodificadores de voz para comunicaÃÃes digitais
This work proposes an analysis of signal processing by intervals containing Portuguese phonemes for encoders utilized in digital communications, specially in VoIP calls. The focus of this work is the adaptation capacity of encoders to vocal tract changes in these intervals during the signal processing. To make the analysis closer to the real time situation,
Publicado em: 2009
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7. Strategy of monitoring and automation in irrigation systems using communication devices in wireless sensor network / Estratégia de monitoramento e automação em sistemas de irrigação utilizando dispositivos de comunicação em redes de sensores sem fio
The goal of this study was to develop strategies for monitoring and automated irrigation systems using FDR capacitance sensors to collect data of water content in the soil through Wireless Sensor Network (WSN). The FDR capacitance sensors were developed in the Department of Agricultural Engineering (DENA) pertain UFC. Were used 14 FDR capacitance sensors and
Publicado em: 2009
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8. Protocolo multiciclos para automação hospitalar sobre Multicast com IEEE 802.3 utilizando
The concepts of the industrial automation are being incorporated in the medical area, in other words, they also pass to be applied in the hospital automation. In this sense, researches have been developed and have usually been approached several of the problems that are pertinent to the processes that can be automated in the hospital environment. Considering
Publicado em: 2008
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9. Desenvolvimento de um WebLab para estudo e caracterização de sistemas WDM
The advent of the Internet and the development of Information and Communication Technologies (ICTs) generated new spaces for communication and collaboration between groups of people in geographically distinct regions. The association of Web technology with instrument automation and control by computer has made possible the development of the so called Remote
Publicado em: 2008
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10. As bibliotecas na cibercultura: Crítica da estética da informação na era do cyberspace
The purpose of this Masters Dissertation is to study virtual libraries from a historical and descriptive standpoint, with emphasis on a recurrent conceptual setting within the context of cyberculture, taken as a time category corresponding to the contemporary phase of mediatic civilization. The empirical factors and aspects of the object of research have bee
Publicado em: 2006
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11. Aplicação do método LTT às estruturas retangulares e triangulares em multicamadas e empilhadas em substratos PBG para comunicações móveis
Recently the planar antennas have been studied due to their characteristics as well as the advantages that they offers when compared with another types of antennas. In the mobile communications area, the need for this kind of antennas have became each time bigger due to the intense increase of the mobile communications that needs of antennas which operate in
Publicado em: 2005
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12. Secure and Low Cost Virtual Connection Under Linux / Conectividade virtual segura e de baixo custo sob Linux
The business environment requires constant collaboration, between people and offices geographically spreaded. The corporative market has one more option for real time data transmission: the private network communications based on IP protocol. The VPN Virtual Private Network stands for the most suitable solution to reduction of costs, fundamental for small co
Publicado em: 2003