E-commerce platforms explore the interaction between users and digital content – user generated streams of events – to build and maintain dynamic user preference models which are used to make meaningful recommendations. However, the accuracy of these incremental models is critically affected by the choice of hyper-parameters. So far, the incremental recommendation algorithms used to process data streams rely on...
Resilience interventions have been gaining importance among researchers due to their potential to provide well-being and reduce the prevalence of mental disorders that are becoming an increasing concern, especially in Western countries, because of the costs associated. The purpose of this systematic review is to identify the intervention studies carried out in the last decade in adult population samples, evalua...
The design of Intelligent Intersection Management (IIM) schemes for fully Autonomous Vehicles (AVs) and mixed with Human-driven Vehicles (HVs) has focused mainly on throughput maximization and users’ safety. However, new IIM strategies should consider environmental factors and human health conditions in their design, given their impact on fuel wastage and emission of dangerous air pollutants. In this paper, we ...
O estudo que aqui se propõe parte da necessidade de conceber formas de análise musical que possam ser úteis não só num conhecimento e compreensão como, em especial , numa interpretação musical Seguindo os pressupostos delineados por Molino e Nattiez, compreende e explora-os perspectivando o fenómeno musical nas três dimensões: poética, estésica e nível neutro. No entanto, não se limita a um reflexão sobre a dim...
Atualmente qualquer organização que queira ser competitiva deve dar a devida atenção ao importante papel que os armazéns têm na cadeia de abastecimento, nomeadamente na ligação entre clientes e fornecedores. Estando a organização onde foi desenvolvida esta dissertação, a IKEA Industry Portugal, ciente da importância do armazém de spare parts e materiais indiretos, o primeiro passo para a realização deste projet...
New technologies involve a reformulation of contents and methodology used for teaching statistics. Developing students’ statistical reasoning becomes an important task for teachers of applied statistics. This is particularly true in the field of health sciences. In this work the statistical reasoning ability acquired by health sciences students was evaluated in the context of their final undergraduate project.
Num ambiente económico cada vez mais incerto, uma maior necessidade de conhecimento por parte dos investidores, e adequada utilização de ferramentas para cobertura de riscos, são fatores que impulsionam o desenvolvimento e a inovação do mercado de derivados. Neste contexto, esta dissertação procura perceber o funcionamento do mercado de derivados, mais concretamente sobre os futuros, e sobre as vantagens que es...
O objetivo desta tese é comparar o comportamento reológico e tribológico de 3 massas lubrificantes à base de sulfonato de cálcio e complexo de lítio e retirar conclusões quanto à sua utilização em rolamentos de esferas e os parâmetros e componentes que possam ter impacto na sua performance. Foram realizados dois métodos para a análise reológica das massas com o reómetro MCR-72 onde foram retiradas conclusões re...
The word MOOC (Massive Open Online Courses) has its origins in an experience carried out by George Siemens and Stephen Downes in 2008 based on the theory of connectivism and social constructivism. This worldwide phenomenon appeared as an evolution of the Open Educational Resources (OER) movement. They are a new style of online classes that allow any person with web access, anywhere, usually free of charge, to p...
There is no complete overview or discussion of the literature of the economics of federalism and fiscal decentralization, even though scholarly interest in the topic has been increasing significantly over recent years. This paper provides a general, brief but comprehensive overview of the main insights from the literature on fiscal federalism and decentralization. In doing so, literature on fiscal federalism an...