671 research outputs found

    Managing the challenges of incorporating new digital technology in public broadcasting services in Brazil and Portugal

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    Digital technology and the rise of innovative online communication services are defining a challenging context for communication medium managers in general and in particular for those who administer public broadcasting systems. This context has propelled these professionals to come up with and establish a set of actions for shaping strategies so that these institutions can produce, advertise and offer media content across new platforms, and thereby re-establish and renew their consumer ties with certain audience profiles. A scene which has been shaped by the ever increasing virtual media options available to users which has led public communication mediums to lose parts of their audience, a situation which, in special circumstances, could threaten the social legitimacy of this particular broadcaster, its actual commitment to its mission and relegate it to a less-important level in the eyes of its citizens. This paper analyzes the challenges public broadcasting services in Brazil and Portugal have incorporating new technology and making themselves visible to an online public

    Os desafios de gestão para a incorporação de novas tecnologias digitais nos serviços públicos de radiodifusão do Brasil e de Portugal

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    As tecnologias digitais e o surgimento de inovadores serviços de comunicação online estão definindo um contexto desafiador para os gestores dos meios de comunicação de modo geral e, em particular, para os que administram os sistemas públicos de radiodifusão. Esse contexto tem impelido esses profissionais a pensarem e estabelecerem um conjunto de ações cujo objetivo fundamental é modelar, em alguma medida, estratégias com o objetivo de fazer com que estas instituições produzam, divulguem e ofertem conteúdos midiáticos através de novas plataformas e, assim, reestabeleçam e renovem seus vínculos de consumo com distintos perfis de público. Um cenário configurado a partir da disponibilização cada vez mais acentuada de opções midiáticas virtuais aos usuários, e que tem levado os meios de comunicação públicos a enfrentarem perdas representativas de fatias de audiências, situação que pode, em circunstâncias limites, colocar em cheque a legitimidade social deste tipo de radiodifusão, o próprio cumprimento da sua missão e relegá-la a um plano de menor relevância perante os cidadãos. O texto analisa os desafios de gestão que se apresentam para os serviços públicos de radiodifusão do Brasil e de Portugal para incorporarem as novas tecnologias e se fazerem presentes perante seus potenciais públicos no ambiente virtual

    Estratégias da Empresa Brasil de Comunicação para enfrentar o desafio da convergência

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    O presente artigo traz os resultados de análise sobre as estratégias digitais da Empresa Brasil de Comunicação (EBC). Com base na leitura crítica de planos de trabalho da empresa pública e relatórios de gestão de 2010-2015 e exame do portal EBC, analisou-se as ações de uso das TICs direcionadas à produção e disponibilização de conteúdos na Internet e dispositivos móveis e sua integração com os canais midiáticos tradicionais. Pesquisa revelou que a concepção de convergência utilizada na empresa encontra-se ainda em estágio incipiente diante das possibilidades técnicas disponíveis. Vários desafios de ordem técnica, financeira e de gestão precisam ser enfrentados pela EBC para incorporar novos parâmetros de produção voltados para o ambiente virtual. Medida essencial a sua legitimidade social e sustentabilidade.This article presents the results of analysis of the digital strategies of Brazil Communications Company (EBC). Based on critical reading of work plans of the public company and management reports of 2010-2015 and examination of the EBC website, analyzed the use of ICT actions directed to the production and availability of content on the Internet and mobile devices and their integration with traditional media channels. Research has revealed that the concept of convergence applied still lie in early stage on the technical possibilities available. Various challenges of technical, financial and management need to be faced by the EBC to incorporate new production parameters directed to the virtual environment. An essential measure their social legitimacy and sustainability.Este artículo presenta los resultados del análisis de las estrategias digitales de la "Empresa Brasil de Comunicação" (EBC). Sobre la base de la lectura crítica de los planes de trabajo de la empresa pública y los informes de gestión de 2010-2015 y el examen de la página web de EBC, analizó el uso de las TIC acciones dirigidas a la producción y disponibilidad de contenidos en Internet y los dispositivos móviles y su integración con canales de comunicación tradicionales. La investigación reveló que el concepto de convergencia utilizado en la se encuentra todavía en una etapa temprana en las posibilidades técnicas disponibles. Varios desafíos técnicos, financieros y de gestión que deberá enfrentar la EBC para que se pueda incorporar nuevos parámetros de producción dirigidas al entorno virtual. Medida esencial para su legitimidad social y sostenibilidad

    Lei de meios como estratégia de fortalecimento da radiodifusão pública: o caso da Argentina, Equador e Uruguai

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    Resumo Como parte das atividades de pesquisa do Observatório da Radiodifusão Pública na América Latina, esse artigo traz o resultado da análise sobre as leis para os meios de comunicação aprovadas na Argentina,no Equador e no Uruguai. A metodologia usada é a do estudo comparado, com os países considerados como unidade de análise. O objetivo da pesquisa foi identificar avanços e desafios que os novos marcos legais representam para o funcionamento das emissoras públicas sob os aspectos de organização do sistema de radiodifusão, modelo de gestão, participação social e financiamento. Discute-se, ainda, em que medida as leis podem produzir avanços no sentido de desvincular a imagem das emissoras públicas desses países de meios governamentais ou estatais. No final, aponta os desafios que essas mudanças trazem para a sustentabilidade do sistema público de radiodifusão.   Palavras-chave: Radiodifusão Pública; Políticas de Comunicação; Estudo Comparado; Lei de Meios.    Resumen Como parte de las actividades de investigación del Observatorio de la Radiodifusión Pública en Latinoamérica, este artículo presenta los resultados de un análisis sobre leyes de medios aprobadas en Argentina, Ecuador y Uruguay. La metodología es la de los estudios comparados, con los países como unidades de análisis. El objetivo fue identificar los avances que han aportado los nuevos marcos legales de esos países para el funcionamiento de las emisoras públicas en los aspectos de organización del sistema de radiodifusión, el modelo de gestión, de la participación social y de la financiación. Discute también, en que medida las leyes avanzaron en el sentido de desvincular la imagen de las emisoras públicas de las consideradas gubernamentales o estatales. Al final, señala los desafíos que estos cambios presentan para la sostenibilidad del sistema de radiodifusión pública.   Palabras claves: Radiodifusión Pública; Políticas de Comunicación; Estudios comparados; Ley de Medios.   Abstract As part of the research activities of the Research Observatory on Public Broadcasting in Latin America, this article presents a review of the media laws adopted in Argentina, Ecuador, and Uruguay. It uses the comparative study methodology in which countries are units of analysis. The aim of the research is to identify the progress and also the challenges presented by the new legal frameworks regarding the public broadcasting system and its organizational structures, management model, social participation and funding. The article also considers the extent of legal progress in order to disentail the image of public broadcasters from government or state outlets. Finally, it points out the challenges faced by public broadcasting system in bringing sustainability to this type of media   Keywords: Public Broadcasting; Communication Policies; Comparative Study; Media La

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

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    A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

    Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

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    Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

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    An embedding technique to determine ττ backgrounds in proton-proton collision data

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    An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe
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