Broadcasting Power
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Assessment of Total Attenuation and Adaptive Scheme for Quality of Service Enhancement in Tropical Weather for Satellite Networks and 5G Applications in Nigeria
Abstract The dynamic weather condition is a major concern for optimum channel utilization in recent times, especially at higher frequencies with larger bandwidth for 5G applications. Over the years, rain-induced attenuation among the hydrometeors has been linked as the major cause of signal impairment especially at the frequency, f ≥ 10 GHz. However, when
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. (In)Seguranças e terrorismos: um estudo comparado entre as mídias online BBC e a Dabiq Magazine a partir dos ataques em Paris
Resumo A partir de uma perspectiva comparada e de uma reflexão de cunho foucaultiano, este artigo1 tem como propósito analisar as construções discursivas sobre (in)segurança internacional, produzidas pelas reportagens jornalísticas da British Broadcasting Corporation (BBC) e pela Dabiq Magazine, de modo a desestabiliza-las. Ressalta-se que o fato hist�
Intercom, Rev. Bras. Ciênc. Comun.. Publicado em: 19/08/2019
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3. A Low Complexity Iterative SLM-OFDM for SHF band applications
Abstract The transmitted Orthogonal Frequency Division Multiplexing signal in systems such as Wireless LAN, Mobile WiMAX, Digital Video Broadcasting (DVB) operating in the Super High Frequency (SHF) band suffers from high Peak to Average Power Ratio. This is reduced in Selective Level Mapping (SLM)approach but at the expense of increased complexity. In this
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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4. Grid anywhere: an extensible desktop grid computing middleware / Grid Anywhere: Um middleware extensível para grades computacionais desktop
This PhD thesis presents investigations, models and implementations of a computational grid middleware named Grid Anywhere. This platform aims at allowing the build of computational grid systems, which enable the increase of the number of participants as consumers and resource providers. In order to do this, new solutions are presented to manage security pol
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2012
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5. Conflitos no Chifre da África: oportunidades e constrangimentos da difusão do poder / Conflitos no Chifre da África: oportunidades e constrangimentos da difusão do poder
Este trabalho aborda as oportunidades e constrangimentos da difusão do poder na África para, a partir de então, investigar as causas das guerras no Chifre da África. O padrão de difusão de poder sobre as populações, os múltiplos centros de poder existentes em um Estado, os mais variados graus de estatalidade e as ações dos diversos atores estatais
Publicado em: 2010
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6. A TV, o outro e o mesmo: figuras da alteridade e traços identitários no Jornal Hoje da Rede Globo
The present work intends to deepen the debate regarding Brazilian television broadcasting, especially concerning to telejournalism and its influence on cultural identities expression and othernesses. The issue is pertinent to a time when TV is no longer just a device but has instead become a tool for political power drift, or social and cultural controlling,
Publicado em: 2010
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7. Democracia, partidos e eleições: os custos do sistema partidário-eleitoral no Brasil.
This study addresses the financing system of electoral campaigns from the analysis of the rules that guide the funding of political parties in Brazil. Taking the 2006 general elections as a reference, it seeks to measure the amount of resources spent for the financial structuring of parties and elections, and determine the public benefits offered by the syst
Publicado em: 2009
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8. Do factual ao ficcional e vice-versa: sobre o trânsito informacional na ambiência midiática.
We have observed the contemporary rise up of a phenomenon: the discursive shuffling of the various realities. The former differentiative processes that split discourses in factual (real) and fictional (unreal) have lost strength before the striking emerge of mediatic image which power of turning any subject believable wiped off such opposition. In structural
Publicado em: 2009
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9. REDUCTION OF NON LINEARITY EFFECTS ON OFDM SIGNALS: A PRE-DISTORTION SCHEME BASED ON POWER SERIES / REDUÇÃO DOS EFEITOS DE CANAIS NÃO-LINEARES SOBRE SINAIS OFDM: UM ESQUEMA DE PRÉ-DISTORÇÃO NÃO-LINEAR BASEADO EM SÉRIE DE POTÊNCIAS
The main problems of multiple carriers through non-linear devices are, AM / PM conversion, conversion AM / PM conversion, and intermodulation. These problems are usually present in satellite transmissions, where high-power amplifiers (HPAs) and nonlinear transponders are used, as well as in terrestrial broadcasting systems where, in order to enlarge the serv
Publicado em: 2008
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10. Das ruas a tela : a representação da violencia na midia eletronica / From the streets to the screen : the violence representation in the news broadcasting
In what way the internal struggleslinked to the television field sustain the forms which through the television theme is represented in its interior? From de principIe that seeing TV as a simple transmitter of "facts" found in the social world, ar still, as a way of "manipulation" of this facts, means to ignore the fight for a better condition in the process
Publicado em: 2008
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11. Interxtuality and polyphony in public and private TV broadscaters : a discoursive textual assessment of TV Cultura s Cultura Noite and TV Globo s Jornal Nacional TV news programs / Intertextualidade e polifonia nas televisões publica e priva : analise textual-discursiva dos telejornais Cultura Noite (TV Cultura) e Jornal Nacional (TV Globo)
This paper has its axis in the field of textual linguistics, having its basis also set on theories of the social sciences, specifically in the subfields of social history and communication sociology. It aims at assessing a variety of different possible occurrences of theme intertext relationships through a deeper look onto concepts as topic centration and po
Publicado em: 2008
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12. Radiodifusão Local na Faixa de 26 MHz Usando DRM: Resultados de Testes em Brasília
The digitalization of the sound broadcasting systems is currently underway throughout the world. One of the systems available for such a process is Digital Radio Mondiale (DRM), which is currently designed to operate in frequencies below 30 MHz. Through the use of the DRM system, a much higher audio quality can be achieved than that of AM radio with the use
Publicado em: 2007