Abstract
Fake news, fabricated stories, rumours, misleading headlines (the so-called clickbaits) are nothing new. The difference of the current context is how fast and wide they spread online, mainly through social network websites, reaching sometimes millions of users. Recently, this problem gained visibility due to its influence on political systems, especially electoral processes and political polarization. The current study addresses these matters, studying how users interact with news in social media platforms, with a deeper insight concerning Facebook and Twitter. The findings not only provide evidence of the importance of social networks as gateways for news, but our data also shows that consumer trust in news is worryingly low, combined with high levels of concern about false news stories. © 2019, Springer Nature Switzerland AG.

Abstract
Virtual Reality (VR) has been evolving over the years, becoming more and more accessible, in a wide area of applications. One of these areas where VR can have a major impact is training and certification. Hydrogen vehicles are becoming a reality and first responders still lack proper tools and resources to train emergency responses for the purpose. VR can play here a crucial role in ensuring a proper hydrogen emergency response training due to the advantages associated with VR training programs such as resource optimization, repeatability, and replicability. This paper proposes using VR for hydrogen emergency response training by developing a solution composed of three components: tutorial mode, training mode, and certification mode. A usability study is further conducted to evaluate its usability and user satisfaction. The results show that the use of this application regards usability and user satisfaction were extremely positive.

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The paper introduces the Active and Permanent Information System Management Model (MGSI-AP). It results from an investigation that discussed concepts and perspectives about Information Management, positioning it as a transversal and applied area within Information Science, focused on info communicational flow, in a complex institutional context the Portuguese public University and related information services. The University is assumed in a complex and systemic double facet, between the formal organized system and the loosely coupled combinatory system. Here is presented one of the operationalization axes of the performed research and model. It highlights the close connection between Information Management and the area of studies of Information Production, framed by a theoretical-methodological proposal and operational modeling, which converge to an Information Management definition and the design of a Matrix of Components and Variables under analysis.

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A literatura dos indicadores culturais  reconhece-os como o membro mais novo da família dos indicadores. Na perspectiva de entender como ocorre a sua conceituação e aplicação na realidade social, procura-se compreender  a sua história à luz das escolas e movimentos em torno do tema. Para tanto, problematiza-se esse percurso a partir de agentes, instituições, temporalidades e intencionalidades na definição e uso dos indicadores. Conclui-se com a apresentação dos resultados da pesquisa exploratória realizada, envolvendo o levantamento bibliográfico e documental,  nomeadamente um <em>framework</em> das linhas de atuação e os expoentes de investigação e uso dos indicadores culturais.

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