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Aplicação da análise multicritério para a definição de áreas de risco de transmissão de malária na província de Luanda, AngolaJosemar Ferreira de Oliveira da Silva 15 December 2017 (has links)
No description available.
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A região Norte: processos de convergência e divergência no desenvolvimento territorialPedro Manuel Gonçalves Inácio 19 December 2017 (has links)
No description available.
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A organização da escolha como política territorial - Reflexões sobre a exclusão urbana cíclica, a partir da teoria da Urbanização PlanetáriaSara Rodrigues Neves 09 November 2021 (has links)
No description available.
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Politics Meets the Internet: Three Essays on Social LearningCremin, John Walter Edward January 2024 (has links)
This dissertation studies three models of sequential social learning, each of which has implications for the impact of the internet and social media on political discourse. I take three features of online political discussion, and consider in what ways they interfere with or assist learning.In Chapter 1, I consider agents who engage in motivated reasoning, which is a belief-formation procedure in which agents trade-off a desire to form accurate beliefs against a desire to hold ideologically congenial beliefs. Taking a model of motivated reasoning in which agents can reject social signals that provide too strong evidence against their preferred state, I analyse under which conditions we can expect asymptotic consensus, where all agents choose the same action, and learning, in which Bayesian agents choose the correct state with probability 1. I find that learning requires much more connected observation networks than is the case with Bayesian agents. Furthermore, I find that increasing the precision of agents’ private signals can actually break consensus, providing an explanation for the advance of factual polarisation despite the greater access to information that the internet provides.
In Chapter 2, I evalute the importance of timidity. In the presence of agents who prefer not to be caught in error publicly, and can choose to keep their views to themselves given this, insufficiently confident individuals may choose not to participate in online debate. Studying social learning in this setting, I discover an unravelling mechanism by which non-partisan agents drop out of online political discourse. This leads to an exaggerated online presence for partisans, which can cause even more Bayesian agents to drop out. I consider the possibility of introducing partially anonymous commenting, how this could prevent such unravelling, and what restrictions on such commenting would be desirable.
In Chapter 3, my focus moves on to considering rational inattention, and how this interacts with the glut of information the internet has produced. I set out a model that incorporates the costly observation of private and social information, and derive conditions under which we should expect learning to obtain despite these costs. I find that expanding access to cheap information can actually damage learning: giving all agents Blackwell-preferred signals or cheaper observations of all their neighbors can reduce the asymptotic probability with which they match the state. Furthermore, the highly connected networks social media produces can generate a public good problem in investigate journalism, damaging the ‘information ecosystem’ further still.
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Comparative Study of Random Forest and SVM for Land Cover Classification and Post- Wildfire Change DetectionTAN YAN CHENG 15 July 2024 (has links)
No description available.
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Políticas de Transferência de Renda: uma comparação entre o Brasil e PortugalBruna Gazzoni 23 July 2024 (has links)
No description available.
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Novos destinos imigratórios em Portugal: um estudo de caso em ViseuDhiogo Pereira Julião 29 July 2024 (has links)
No description available.
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Os impactos das alterações climáticas e as questões de género: os reflexos das desigualdades sociaisVictória Miguel Rampazzo 19 July 2024 (has links)
No description available.
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Betweenness and Information Centrality Analysis of Integrated Urban Road Infrastructure over a Dual Graph Model - A Road Network Assessment of Porto, PortugalStefan Pozinarea 17 July 2024 (has links)
No description available.
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Desenvolvimento e Aplicação de Sistemas de Baixo Custo Baseados em Sensores Capacitivos para Monitoramento da Umidade do Solo em Vinhas do Alto DouroPedro Capella Goytacaz Sant Anna 02 July 2024 (has links)
No description available.
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