946 resultados para autorizzazione,cybersecurity,INFN,OpenPolicyAgent,OAuth 2.0,VOMS,OpenID Connect,NGINX


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Social Networking Sites have recently become a mainstream communications technology for many people around the world. Major IT vendors are releasing social software designed for use in a business/commercial context. These Enterprise 2.0 technologies have impressive collaboration and information sharing functionality, but so far they do not have any organizational network analysis (ONA) features that reveal any patterns of connectivity within business units. This paper shows the impact of organizational network analysis techniques and social networks on organizational performance, we also give an overview on current enterprise social software, and most importantly, we highlight how Enterprise 2.0 can help automate an organizational network analysis.

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In this article, we present FACSGen 2.0, new animation software for creating static and dynamic threedimensional facial expressions on the basis of the Facial Action Coding System (FACS). FACSGen permits total control over the action units (AUs), which can be animated at all levels of intensity and applied alone or in combination to an infinite number of faces. In two studies, we tested the validity of the software for the AU appearance defined in the FACS manual and the conveyed emotionality of FACSGen expressions. In Experiment 1, four FACS-certified coders evaluated the complete set of 35 single AUs and 54 AU combinations for AU presence or absence, appearance quality, intensity, and asymmetry. In Experiment 2, lay participants performed a recognition task on emotional expressions created with FACSGen software and rated the similarity of expressions displayed by human and FACSGen faces. Results showed good to excellent classification levels for all AUs by the four FACS coders, suggesting that the AUs are valid exemplars of FACS specifications. Lay participants’ recognition rates for nine emotions were high, and comparisons of human and FACSGen expressions were very similar. The findings demonstrate the effectiveness of the software in producing reliable and emotionally valid expressions, and suggest its application in numerous scientific areas, including perception, emotion, and clinical and euroscience research.

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The latest coupled configuration of the Met Office Unified Model (Global Coupled configuration 2, GC2) is presented. This paper documents the model components which make up the configuration (although the scientific description of these components is detailed elsewhere) and provides a description of the coupling between the components. The performance of GC2 in terms of its systematic errors is assessed using a variety of diagnostic techniques. The configuration is intended to be used by the Met Office and collaborating institutes across a range of timescales, with the seasonal forecast system (GloSea5) and climate projection system (HadGEM) being the initial users. In this paper GC2 is compared against the model currently used operationally in those two systems. Overall GC2 is shown to be an improvement on the configurations used currently, particularly in terms of modes of variability (e.g. mid-latitude and tropical cyclone intensities, the Madden–Julian Oscillation and El Niño Southern Oscillation). A number of outstanding errors are identified with the most significant being a considerable warm bias over the Southern Ocean and a dry precipitation bias in the Indian and West African summer monsoons. Research to address these is ongoing.

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Slutrapport till Malmö stad, maj 2010

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Today the Internet is entwined into our everyday society. From the beginning days in 1980 to today, the Internet has been evolving. The creator of the World Wide Web, Tim Berners-Lee, envisioned that the Internet would be a system with everything connected to everything. The web today is changing with new applications arriving from outside the previous channels of the megalithic software companies. Thousands of individual developers are creating micro-applications to enhance the earlier framework of the web. This revolution has been coined "Web 2.0". Many observers today are skeptical that Web 2.0 is really a revolution at all, but maybe is just a continuation of Berners-Lee's original concept. This paper examines, based on a critical literature review, the discussions taking place regarding Web 2.0.

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Internet Telephony (VoIP) is changing the telecommunication industry. Oftentimes free, VoIP is becoming more and more popular amongst users. Large software companies have entered the market and heavily invest into it. In 2011, for instance, Microsoft bought Skype for 8.5bn USD. This trend increasingly impacts the incumbent telecommunication operators. They see their main source of revenue – classic telephony – under siege and disappear. The thesis at hand develops a most-likely scenario in order to determine how VoIP is evolving further and it predicts, based on a ten-year forecast, the impact it will have on the players in the telecommunication industry.The paper presents a model combining Rogers’ diffusion and Christensen’s innovation research. The model has the goal of explaining the past evolution of VoIP and to isolate the factors that determine the further diffusion of the innovation. Interviews with industry experts serve to assess how the identified factors are evolving.Two propositions are offered. First, VoIP operators are becoming more important in international, corporate, and mobile telephony. End-to-end VoIP (IP2IP) will exhibit strong growth rates and increasingly cannibalize the telephony revenues of the classic operators. Second, fix-net telephony in SMEs and at home will continue to be dominated by the incumbents. Yet, as prices for telephony fall towards zero also they will implement IP2IP in order to save costs. By 2022, up to 90% of the calls will be IP2IP. The author recommends the incumbents and VoIP operators to proactively face the change, to rethink their business strategies, and to even be open for cooperation.

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Se, ao longo do século XX, as favelas foram representadas sob a ótica de atores externos, o século XXI marca o surgimento das autorrepresentações, trazendo à tona a perspectiva de habitantes de territórios populares. Neste contexto, o presente estudo investiga a categoria dos “comunicadores periféricos” que participam da renovação contemporânea das representações de favelas e bairros de periferia urbana no campo midiático. A partir da análise da rede de colaboradores do website “Viva Favela 2.0”, ativo entre 2010 e 2013, destacando as autorrepresentações inseridas nas páginas de “perfil” dos usuários cadastrados, a pesquisa identifica um grupo de moradores de favelas e periferias produtores de conteúdo jornalístico e cultural em diversas linguagens, articulados em múltiplas redes, com ensino superior iniciado ou concluído e dispostos a tomar parte no diálogo social não apenas como profissionais mas também como militantes pelo desenvolvimento de suas comunidades.

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Este projeto teve como principal objetivo continuar o desenvolvimento do quiosque multimédia FNAC. Filial do Grupo Pinault Printemps, a FNAC é líder europeu na distribuição de bens tecnológicos e culturais. Nesta fase do desenvolvimento, o foco do projeto centrou-se na procura da melhor forma de mostrar ao utilizador a localização de um produto na loja FNAC Madeira, expansão das funcionalidades aos restantes produtos e o redesenho da interface do quiosque multimédia FNAC. Por forma a identificar uma forma eficaz de dar a conhecer ao utilizador a localização de um produto dentro da loja FNAC Madeira, foi efetuado um estudo que consistiu em questionários e testes com utilizadores para comparar duas formas de localização, por planta da loja ou por vídeo em tempo real. A primeira versão do quiosque multimédia FNAC apenas possuía suporte a livros, pelo que foi necessário tornar a aplicação o mais abstrata possível por forma a gerar as categorias de produtos em runtime recorrendo a ficheiros XML. Por fim, para redesenhar a interface do quiosque multimédia FNAC, foram efetuadas análises às interfaces da primeira versão, utilizando as heurísticas de Nielsen e os “Principles of good form” de Larry Constantine. Após a fase de análise as interfaces foram redesenhadas tendo por base a análise efetuada, o guia de norma FNAC 2011 e breves testes de usabilidade com utilizadores. Do estudo realizado, na procura pela melhor forma de localização, foram identificados alguns problemas relacionados com a utilização de um vídeo em tempo real para a identificação, tal como as interferências externas por parte dos outros clientes do espaço comercial e foi possível constatar um melhor desempenho e aceitação da localização por planta. A localização por planta mostrou-se suficiente para os utilizadores conseguirem identificar o local onde o produto estava exposto, pois permitia-lhes identificar o local onde encontravam-se e obter uma localização mais precisa do local, necessitando apenas de olhar em volta para conseguir relacionar o que era possível visualizar na planta com aquilo que os rodeava na loja.

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The aim of this study was to comparatively evaluate the mechanical strength of squared and rectangular 2.0 mm system miniplates comparing them to the standard configuration with 2 straight miniplates in stabilizing fractures in the anterior mandible. Ninety synthetic polyurethane mandible replicas were used in mechanical test. The samples were divided into six groups of three different methods for fixation. Groups 1, 2 and 3 showed complete fractures in symphysis, characterized by a linear separation between the medial incisor, and groups 4, 5 and 6 showed complete fractures in parasymphysis with oblique design. Groups 1 and 4 were represented by the standard technique with two straight miniplates parallel to each other. Groups 2 and 5 were stabilized by squared miniplates and groups 3 and 6 were fixed by rectangular design. Each group was subjected to a mechanical test at a displacement speed of 10 mm/min on a universal testing machine, receiving linear vertical load on the region of the left first molar. The values of the maximum load and when displacements reached 5 mm were obtained and statistically analyzed by calculating the confidence interval of 95%. Fixation systems using squared (G2) and rectangular (G3) miniplates obtained similar results. No statistically significant differences with respect to the maximum load and the load at 5 mm displacement were found when compared to standard method in symphyseal fractures (G1). In parasymphysis the fixation method using squared miniplates (G5) obtained results without significant differences regarding the maximum load and the load at 5 mm when compared to the standard configuration (G4). The fixation method using rectangular miniplates (G6) showed inferior results which were statistically significant when compared to the standard configuration (G4) for parasymphysis fractures. The mechanical behavior of the fixation methods was similar, except when rectangular miniplates were used. The fixation methods showed better results with statistical significance in symphyseal fractures