Motivação, comunicação e liderança: caso da PSP portuguesa

Mestrado em Contabilidade e Gestão das Instituições Financeiras

A actual conjuntura económico-financeira e os mercados de futuros sobre o petróleo

Mestrado em Contabilidade e Análise Financeira

Study of the production of polyesters for polyurethanes at pilot plant scale

Dissertação para obtenção do grau de Mestre em Engenharia Química

Luz ao fundo do túnel? Análise de um modelo de prevenção e intervenção face ao sobreendividamento das famílias

Na actual conjuntura económica portuguesa tem-se registado uma evolução crescente de situações de sobreendividamento ou de insolvência dos agregados familiares. Associada a esta tendência, surge a preocupação, por parte dos decisores, em encontrar formas de intervenção, mais ou menos ajustadas, face aos problemas verificados. Contudo, esta problemática exige uma actuação integrada, que contemple medidas direccionadas não apenas para a intervenção mas também para a prevenção deste tipo de situações na sociedade portuguesa. Pretendemos, com a apresentação deste modelo, propor um vasto conjunto de medidas, entre as quais se conta a educação financeira, que conduzam a uma dupla actuação face à problemática do sobreendividamento (preventiva e de tratamento), atendendo aos antecedentes, de natureza diversa, que podem estar na sua origem. Este modelo será alvo de uma reflexão e análise, com vista a identificar a pertinência da sua aplicação ao actual panorama sócio-económico português.

Diz-me porque poupas, dir-te-ei como te comportas

Embora Portugal seja um país onde tradicionalmente se mantinham elevados níveis de poupança, essa tendência esbateu-se na década passada, fruto de fatores diversos e de uma realidade sócio-económica menos favorável. Todavia, na presente conjuntura económica reveste-se de particular importância a adoção de comportamentos de poupança. É, por isso, necessário compreender claramente os fatores que estão na sua origem. Neste estudo, que envolveu uma amostra de 835 portugueses, procurámos investigar a relação entre as motivações de poupança e os comportamentos de poupança dos portugueses. Os resultados indicam que as motivações de poupança estão relacionadas com a perceção da capacidade de gestão financeira, com a elaboração de um orçamento familiar e com a frequência de poupança dos agregados familiares em Portugal.

O contributo do Value For Money na análise da atividade do transporte não urgente de doentes

Mestrado em Auditoria

Equipamentos de congelação industrial de produtos alimentares perecíveis: análise comparada de apoio à decisão

Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica

Controlo fotogramétrico da condição de estruturas quebra-mar

Dissertação de natureza Científica para obtenção do grau de Mestre em Engenharia Civil

Technical and economic assessment of energy from Tidal Currents

The present work aims to study the feasibility of deploying a farm of sea current turbines for electricity generation in Portugal. An approach to the tides, which are they, how they are formed, its prediction, is held. It is also conducted a study about the energy of sea currents and it is presented some technology about ocean currents too. A model of tidal height and velocity of the currents it is also developed. The energy produced by a hypothetical park, built in Sines (Portugal), is calculated and afterwards, an economical assessment is performed for two possible scenarios and a sensitivity analysis of NVP (Net Present Value) and LCOE (Levelized Cost of Energy) is figured. The conclusions about the feasibility of the projects are also presented. Despite being desired due to its predictability, this energy source is not yet economically viable as it is in an initial state of development. To push investment in this technology a feed-in tariff of, at least €200/MWh, should be considered.

Renewable energy in Islands: an integrated proposal for electricity generation and transports

The purpose of this article is to analyse and evaluate the economical, energetic and environmental impacts of the increasing penetration of renewable energies and electrical vehicles in isolated systems, such as Terceira Island in Azores and Madeira Island. Given the fact that the islands are extremely dependent on the importation of fossil fuels - not only for the production of energy, but also for the transportation’s sector – it’s intended to analyse how it is possible to reduce that dependency and determine the resultant reduction of pollutant gas emissions. Different settings have been analysed - with and without the penetration of EVs. The Terceira Island is an interesting case study, where EVs charging during off-peak hours could allow an increase in geothermal power, limited by the valley of power demand. The percentage of renewable energy in the electric power mix could reach the 74% in 2030 while at the same time, it is possible to reduce the emissions of pollutant gases in 45% and the purchase of fossil fuels in 44%. In Madeira, apart from wind, solar and small hydro power, there are not so many endogenous resources and the Island’s emission factor cannot be so reduced as in Terceira. Although, it is possible to reduce fossil fuels imports and emissions in 1.8% in 2030 when compared with a BAU scenario with a 14% of the LD fleet composed by EVs.

Renewable energy in Islands: an integrated proposal for electricity generation and transports

The purpose of this article is to analyse and evaluate the economical, energetic and environmental impacts of the increasing penetration of renewable energies and electrical vehicles in isolated systems, such as Terceira Island in Azores and Madeira Island. Given the fact that the islands are extremely dependent on the importation of fossil fuels - not only for the production of energy, but also for the transportation’s sector – it’s intended to analyse how it is possible to reduce that dependency and determine the resultant reduction of pollutant gas emissions. Different settings have been analysed - with and without the penetration of EVs. The Terceira Island is an interesting case study, where EVs charging during off-peak hours could allow an increase in geothermal power, limited by the valley of power demand. The percentage of renewable energy in the electric power mix could reach the 74% in 2030 while at the same time, it is possible to reduce the emissions of pollutant gases in 45% and the purchase of fossil fuels in 44%. In Madeira, apart from wind, solar and small hydro power, there are not so many endogenous resources and the Island’s emission factor cannot be so reduced as in Terceira. Although, it is possible to reduce fossil fuels imports and emissions in 1.8% in 2030 when compared with a BAU scenario with a 14% of the LD fleet composed by EVs.

Technical and economic assessment of energy from Tidal Currents

The present work aims to study the feasibility of deploying a farm of sea current turbines for electricity generation in Portugal. An approach to the tides, which are they, how they are formed, its prediction, is held. It is also conducted a study about the energy of sea currents and it is presented some technology about ocean currents too. A model of tidal height and velocity of the currents it is also developed. The energy produced by a hypothetical park, built in Sines (Portugal), is calculated and afterwards, an economical assessment is performed for two possible scenarios and a sensitivity analysis of NVP (Net Present Value) and LCOE (Levelized Cost of Energy) is figured. The conclusions about the feasibility of the projects are also presented. Despite being desired due to its predictability, this energy source is not yet economically viable as it is in an initial state of development. To push investment in this technology a feed-in tariff of, at least €200/MWh, should be considered.

A contabilidade de gestão e a data envelopment analysis : análise de desempenho organizacional

Mestrado em Contabilidade e Gestão das Instituições Financeiras

Moradia no centro histórico do Montijo: reabilitação vs construção nova

Dissertação para obtenção do grau de Mestre em Engenharia Civil na Área de Especialização de Edificações

Unstabilized rammed Earth: characterization of material collected from old constructions in South Portugal and comparison to normative requirements

Unstabilized rammed earth is a recyclable, economical, and eco-friendly building material, used in the past and still applied today. Traditionally, its use was based on a long empirical knowledge of the local materials. Because this knowledge was mostly lost or is no longer sufficient, in many countries normative documents have been produced to allow the assessment of rammed earth soils. With the aim of contributing for a refining of these normative requirements, this article presents a research work that included: (i) collection of Unstabilized rammed earth samples from six constructions in Portugal; (ii) a literature survey of normative and complementary documents to identify the most mentioned key-properties, the test procedures and the corresponding threshold limits; and (iii) a discussion of the test procedures and of the thresholds limits in the light of the experimental results. The analyzed properties are the particle size distribution, maximum particle size, plasticity, compaction, linear shrinkage, organic content, and salt content. The work highlights the advantages of taking into account the characteristics of existing constructions as a basis for the establishment and further refining of consistent threshold values. In particular, it shows that it is essential to adjust the requirements to the specificities of local materials.