Communication System
Mostrando 1-12 de 1021 artigos, teses e dissertações.
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1. Brazilian Psychiatric Association guidelines for the management of suicidal behavior. Part 3. Suicide prevention hotlines
Crisis hotlines are direct communication systems, usually telephone-based, set up to prevent suicide. However, few studies have evaluated their effectiveness. The present study aims to perform a systematic review, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework, of the effectiveness of interventions through dir
Brazilian Journal of Psychiatry. Publicado em: 2023
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2. Efficient Low-Complexity Optimized Channel Estimating Methods for OFDM-Based Low-Voltage Broadband Power Line Communication Systems
Abstract Broadband Power Line Communication (BB-PLC) technology enables data transmission for smart grid applications. Nevertheless, channel equalizers are required in the receiver to estimate and compensate for the nonlinear time-variant impulse response and noise interference effects introduced by the BB-PLC channel. In this paper, we append the Particle S
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Antecedent factors of violation of information security rules
Abstract Purpose This paper aims to investigate the influence of moral disengagement, perceived penalty, negative experiences and turnover intention on the intention to violate the established security rules. Design/methodology/approach The method used involves two stages of analysis, using techniques of structural equation modeling and artificial intellig
RAUSP Management Journal. Publicado em: 2022
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4. Management strategies for implementing a multicenter cross-sectional study: lessons from the ADHERE Brazil study
ABSTRACT BACKGROUND: Epidemiological studies involving large samples usually face financial and operational challenges. OBJECTIVES: To describe the planning and execution of ADHERE Brazil, an epidemiological study on 1,105 kidney transplant patients, and report on how the study was structured, difficulties faced and solutions found. DESIGN AND SETTING: Cr
Sao Paulo Medical Journal. Publicado em: 2022
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5. Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils
Abstract In this paper, it is demonstrated that the efficiency and ability to transfer power to the load in three-coil wireless power transfer (WPT) systems are always higher than in equivalent four-coil ones. On the other hand, it is shown that there are features attainable in four-coil WPT system that are not in three-coil ones. For instance, in a four-coi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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6. FD MAC Protocol Design for Co-Existing WLANs in 5G Cellular Networks
Abstract In this paper, we design full-duplex (FD) medium access control (MAC) protocol for co-existing wireless local area networks (WLANs) in 5G cellular networks (WCFD-MAC). Our design considers some significant features of 5G networks, exceptionally, beamforming and FD capabilities at both, the base station and user equipment. FD communications may gener
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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7. 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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8. 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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9. Implementação do Pecs Associado ao Point-Of-View Video Modeling na Educação Infantil para Crianças com Autismo
RESUMO Este estudo teve por objetivo analisar os efeitos do Picture Exchange Communication System (PECS) associado ao Point-of-view Video Modeling (POVM) nas habilidades comunicativas de três crianças diagnosticadas com Transtorno do Espectro Autista (TEA) e Necessidades Complexas de Comunicação. Empregou-se o delineamento experimental de múltiplas sond
Rev. bras. educ. espec.. Publicado em: 2020-07
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10. Inovação tecnológica radical e mudança organizacional: a institucionalização de organizações resilientes e formas de trabalho mais substantivas
Resumo Este artigo-dossiê apresenta inicialmente uma reflexão sobre a institucionalização de organizações resilientes, uma vez que a mudança organizacional é a reinvenção de um novo sistema de regras e normas com o propósito de encorajar novas condutas e convívios e formas de negociação necessárias e, no que concerne, lograr a colaboração do
Cad. EBAPE.BR. Publicado em: 20/01/2020
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11. Facebook® como Ferramenta Pedagógica em Saúde Coletiva: Integrando Formação Médica e Educação em Saúde
RESUMO As mídias sociais conquistaram significativa importância na vida dos jovens contemporâneos, tanto no âmbito pessoal – para informação, divertimento – quanto no coletivo – para se projetarem como seres sociais e compartilharem informações com várias pessoas quase que instantaneamente. Diante disso, docentes da unidade curricular Saúde C
Rev. bras. educ. med.. Publicado em: 13/01/2020
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12. Symbolic consumption and representation of self: a study of interactions in a virtual community of Ubuntu-Br users
Resumo Este estudo tem como objetivo explicar como o consumo simbólico do sistema operacional Ubuntu é utilizado para a representação do self em interações na comunidade virtual Ubuntu do Brasil. Adotamos a concepção Goffmaniana do self, a netnografia da comunicação como método de pesquisa e o estudo de caso como estratégia de pesquisa. O paralin
Cad. EBAPE.BR. Publicado em: 09/12/2019