Data Transmission Systems
Mostrando 13-24 de 140 artigos, teses e dissertações.
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13. A tale of two neglected tropical infections: using GIS to assess the spatial and temporal overlap of schistosomiasis and leprosy in a region of Minas Gerais, Brazil
BACKGROUND Despite public health efforts to reduce the global burden of leprosy, gaps remain in the knowledge surrounding transmission of infection. Helminth co-infections have been associated with a shift towards the lepromatous end of the disease spectrum, potentially increasing transmission in co-endemic areas. OBJECTIVES Using this biologically plaus
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-04
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14. In-Vitro Evaluation of Two Types of Neonatal Oxygenators in Handling Gaseous Microemboli and Maintaining Optimal Hemodynamic Stability During Cardiopulmonary Bypass
Abstract Objective: Usually only FDA-approved oxygenators are subject of studies by the international scientific community. The objective of this study is to evaluate two types of neonatal membrane oxygenators in terms of transmembrane pressure gradient, hemodynamic energy transmission and gaseous microemboli capture in simulated cardiopulmonary bypass syst
Braz. J. Cardiovasc. Surg.. Publicado em: 2016-10
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15. The Smart Grid Concept in Oil & Gas Industries by a Field Trial of Data Communication in MV Power Lines
Abstract Nowadays, communication and networking technologies are essential for Oil & Gas industries in order to guarantee reliability, safety and low costs in the producing process. Information access and commands and set-points transmission from/to automation systems are challenging tasks mainly due to distributed production areas and hostile environments.
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-06
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16. São Paulo urban heat islands have a higher incidence of dengue than other urban areas
Urban heat islands are characterized by high land surface temperature, low humidity, and poor vegetation, and considered to favor the transmission of the mosquito-borne dengue fever that is transmitted by the Aedes aegypti mosquito. We analyzed the recorded dengue incidence in Sao Paulo city, Brazil, in 2010-2011, in terms of multiple environmental and socio
Braz J Infect Dis. Publicado em: 2015-04
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17. Estudos de sistemas OFDM para comunicações ópticas / Studies OFDM systems for optical communications
The development of digital modulation formats in optical communications systems is considered to be a promising way to increase the spectral efficiency and to combat the effects of signal degradation in optical fiber without changing the infrastructure already deployed. In this context, the technique called OFDM (orthogonal frequency division multiplexing) e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/10/2012
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18. VHDL SIMPLE SYSTEM FOR DEVELOPING A SETUP OFMULTIPLE ANTENNAS / SISTEMA SIMPLES EM VHDL PARA O DESENVOLVIMENTO DE UM SETUP DE MÚLTIPLAS ANTENAS
MIMO systems (Multiple In - Multiple Out) are the rise of new tele- communication systems. They have the characteristic of generating greater channel capacity with low power transmitters, creating a more efficient use of energy. As the purpose is to provide higher data rate, conventional methods are too limited to improve this, and MIMO systems generate an i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/09/2012
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19. Proposal of a new approach for BER evaluation of multirate, multiservice OCDMA systems / Proposta de uma nova abordagem para o cálculo da BER de sistemas OCDMA de múltiplas taxas e multiserviços
The continuous evolution of the optical communication technology in the last few years has allowed the growing users demand for higher bandwidth to be satisfactorily attended. This new demand is mainly attributed to the growing popularity of bandwidth-intensive networking applications, such as Internet protocol television (IPTV), high-definition television (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2012
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20. Metodologia para aplicação de RFID em automação : estudo de caso em um sistema de gestão / Methodology for RFID implementation in automation : case study in a management system
Radio-frequency identification (RFID) is an emerging technology with enormous potential for application. It can be used where there is a need to identify distant objects, wirelessly, with data transmission via radio signals, followed by its storage and process on computer systems, making them available for future use. As its applications permeates many busin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/07/2012
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21. Desenvolvimento de uma centrífuga de alta rotação eletronicamente monitorada para pesquisa em biologia espacial
This work presents the development of an centrifuge prototype for experiments with vegetables. Its main features are the high mechanical performance and instruments. In more details are presented the specification, implementation, validation and performance assessment through a case study. Its high speed and stability generates a vector component of centrifu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2012
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22. Sistema de comunicação de dados pela rede elétrica, de baixo custo, aplicado a uma rede de medidores individuais de energia elétrica residencial : concepção do circuito, protótipo e testes / Communication system to the AC power, low cost, applied to a network of individual meters for residential electricity, circuit design, prototyping and testing
Este trabalho é parte de um projeto de pesquisa e desenvolvimento de uma rede de mini-medidores de energia, de baixíssimo custo, que se comunica com uma central, que armazena todas as informações relativas ao consumo de energia elétrica, de cada um dos pontos de consumo de uma residência. Ao fim de um período, fornece ao consumidor condições de anal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/10/2011
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23. Análise de fatores que afetam o comportamento de spammers na rede
The transmission of unwanted messages through the Internet, or spam, is a serious problem, still unsolved, and which leads to million-dollar losses all over the world, be it for the resources consumed by that message trafic or for the impact of scams. The goal of this work is to better understand the behavior of spammers (those responsible for sending spam m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/08/2011
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24. Um estudo sobre a robustez de técnicas de processamento de sinais em sistemas MIMO / A study regarding robustness of signal processing techniques in MIMO systems
Multiple antenna wireless communication systems achieve high data transmission rates and good robustness to channel fading when signals traveling through the system are jointly processed in their transmitters and/ or receivers. In general, signal detection techniques assume perfect knowledge of the channel state information, in both transmitter and receiver,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011