Mobile Communication System
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Should ethanol be considered a treatment for COVID-19?
Abstract This paper describes the analysis of the effects of a frequency selective surface (FSS) on the characteristics of a microstrip line fed antenna with a bow-tie slot in the ground plane for operation in the frequency range 1 to 10 GHz. The use of the FSS is proposed to miniaturize the antenna structure and increase the number of resonance frequencies
Rev. Assoc. Med. Bras.. Publicado em: 2020-09
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2. Effects of an FSS Reflector on a Microstrip Line Fed Bow-Tie Slot Antenna
Abstract This paper describes the analysis of the effects of a frequency selective surface (FSS) on the characteristics of a microstrip line fed antenna with a bow-tie slot in the ground plane for operation in the frequency range 1 to 10 GHz. The use of the FSS is proposed to miniaturize the antenna structure and increase the number of resonance frequencies
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-09
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3. Desenvolvimento de sistema de baixo custo para monitoramento de integridade estrutural
RESUMO O Monitoramento da Integridade Estrutural (MIE) pode ser utilizado para avaliar as condições de integridade de uma estrutura, ou ainda para verificar modelos de comportamento da mesma. Os atuais sistemas de monitoramento aplicados em grandes estruturas, contam com inúmeros sensores, dos mais variados tipos, que formam redes de comunicação, em alg
Matéria (Rio J.). Publicado em: 25/11/2019
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4. RFID na edificação: proposta de modelo de sistema para organização das informações de manutenção
Resumo A indústria da construção civil é vista como uma indústria baseada no conhecimento. Ao longo do processo de projeto de uma edificação várias informações são geradas e compõem uma série de documentos que, após a conclusão da obra, devem ser entregues aos proprietários e gestores das edificações para a devida manutenção do imóvel. E
Ambient. constr.. Publicado em: 03/10/2019
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5. AACVOX: mobile application for augmentative alternative communication to help people with speech disorder and motor impairment
AbstractIntroduction: Communication is a fundamental element for the development of human beings, promoting their coexistence in society. However, changes in muscle tone, associated with cerebral palsy (CP), among other conditions, cause phono-articulatory dysfunctions hindering speech capabilities. Although there are resources for augmentative and alternat
Res. Biomed. Eng.. Publicado em: 2018-06
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6. ELECTRONIC MONITORING SYSTEM FOR MEASURING HEART RATE AND SKIN TEMPERATURE IN SMALL RUMINANTS
Abstract The electronic monitoring of physiological responses is essential for managing animal production systems considering market demands for animal welfare. The objective of this study was to design, build, and test an electronic monitoring system, with recording and wireless transmission capability, for measuring the heart rate and skin temperature in s
Eng. Agríc.. Publicado em: 2018-04
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7. Optically controlled reconfigurable antenna for 5G future broadband cellular communication networks
Abstract This paper presents an optically controlled reconfigurable antenna for millimetre-wave frequency range. Silicon switches are used to control the optical reconfiguration, modifying the frequency response and radiation pattern of the antenna design. Therefore, the system can switch between the lightly licensed 28 GHz and 38 GHz frequency bands, useful
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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8. Reliable Energy-Efficient Multilayer Mechanism with Realistic Battery Model and QoE Support in Wireless MANETs
Abstract Evolution in the telecommunications networks and the rapid advances made in wireless mobile communication networks, have taken computer networks to a new communication level. They now provide support for new mobile multimedia applications and are thus fostering the development of new network types and configurations. MANET is an important configurat
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-03
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9. A FRAMEWORK FOR DEVELOPING SELF-ADAPTIVE AGENTS IN MOBILE DEVICES / UM FRAMEWORK PARA DESENVOLVIMENTO DE AGENTES AUTOADAPTATIVOS EM DISPOSITIVOS MÓVEIS
Technological progress in mobile computing and the Internet promotes an achievement of the futuristic vision in which users have access to data and services anytime and anywhere. However, this vision realization brings important issues to application development, because more attention is required to the communication between mobile devices and web services,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
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10. 4iPay : modelo para sistemas de pagamento móvel em comércio ubíquo
This work aims at presenting a usability and architectural model for a mobile payment system. In our model, we assume independence of devices, of location, of mobile operator, and of administrator, to allow all kinds of payment in ubiquitous environments (Ubiquitous Commerce). In this work, we begin describing motivation, goals, and fundamental concepts, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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11. Tecnologias móveis na educação
The use of the mobile technology has caused several changes in all segments of society. Due to their being inserted in peoples lives, the digital mobile devices cause changes in the way people communicate, interact, work, purchase, entertain and learn. In search for greater flexibility, convenience and mobility, society has increasingly taken control of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2011
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12. DECISION SUPPORT SYSTEM FOR USE IN AGRIBUSINESS (SADA): TELEMETRY AND DATA PROCESSING PERFORMANCE OF MACHINE HARVEST / SISTEMA DE APOIO À DECISÃO PARA UTILIZAÇÃO NO AGRONEGÓCIO (SADA): TELEMETRIA E TRATAMENTO DE DADOS DE DESEMPENHO DE MÁQUINA DE COLHEITA
To obtain higher profitability in farms, it is essential to proper management of the operations performed, caused by concern over the operational cost of the machines used, which represents a high percentage compared to total costs of operation and can be up to forty percent. This cost can be reduced if the use of machinery is optimized, improving performanc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011