Silvopastoral agroforestry for rural environment sustainability and valorization of the region of Guarda and Serra da Estrela, Portugal

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ALFRED-DONAT AGACHE URBAN PROPOSAL FOR COSTA DO SOL. FROM THE TERRITORY TO THE CITY.

This paper reviews the development of Costa do Sol, as planned by architect urbanist Alfred-Donat Agache, for Lisbon Region in Portugal. The Plano Expansão Região Oeste de Lisboa (1934-1936) prepared by Agache and requested by Portuguese Minister of Public Works, Duarte Pacheco will be analyzed. This paper aims also to identify the principles and the theoretical foundations that have determined Agache urban vision for Lisbon City and its Territory. Finally, this paper aims to demonstrate that Alfred-Donat Agache methodological framework has applied Frederick Le Play socio-economic scientific approach. Such approach has informed the construction of a ‘civic’ urbanism that will be identified and analyzed. Two main goals seem to have guided Agache work at Costa do Sol: (i) the fully urban analysis of the city, throughout its social, economic, geographic and urban conditions (past and present) and (ii) the need to expose such analysis to the city’s inhabitants. Finally, this paper demonstrates Costa do Sol proposal to testify a comprehensive understanding of three distinct scales: (i) the territory; (ii) the city; (iii) but also the urban form. The acknowledgment of Agache ‘civic’ urban vision requests a public divulgation to allow the building of Good Practice Lessons for contemporary urban planning theory and practice

ALFRED-DONAT AGACHE URBAN PROPOSAL FOR COSTA DO SOL. FROM THE TERRITORY TO THE CITY.

This paper reviews the development of Costa do Sol, as planned by architect urbanist Alfred-Donat Agache, for Lisbon Region in Portugal. The Plano Expansão Região Oeste de Lisboa (1934-1936) prepared by Agache and requested by Portuguese Minister of Public Works, Duarte Pacheco will be analyzed. This paper aims also to identify the principles and the theoretical foundations that have determined Agache urban vision for Lisbon City and its Territory. Finally, this paper aims to demonstrate that Alfred-Donat Agache methodological framework has applied Frederick Le Play socio-economic scientific approach. Such approach has informed the construction of a ‘civic’ urbanism that will be identified and analyzed. Two main goals seem to have guided Agache work at Costa do Sol: (i) the fully urban analysis of the city, throughout its social, economic, geographic and urban conditions (past and present) and (ii) the need to expose such analysis to the city’s inhabitants. Finally, this paper demonstrates Costa do Sol proposal to testify a comprehensive understanding of three distinct scales: (i) the territory; (ii) the city; (iii) but also the urban form. The acknowledgment of Agache ‘civic’ urban vision requests a public divulgation to allow the building of Good Practice Lessons for contemporary urban planning theory and practice

The Science of Architecture. Representations of Portuguese national architecture in the 19th century World Exhibitions: archetypes, models and images

Peer Reviewe

O Paradigma da Reconstituição - a prática do restauro no século XIX

O restauro artístico em Portugal no século XIX foi dominada pelo príncipio da reconstituição do suposto estado original do objecto ou do imóvel a intervencionar. Este príncipio ocupou o lugar deixado vago pela ausência de uma reflexão teórica sobre o restauro e determinou os critérios de intervenção, levando a alterações significativas da aparência e da materialidade das obras de arte intervencionadas

Impulsive Heating of Solar Flare Ribbons Above 10 MK

The chromospheric response to the input of flare energy is marked by extended extreme ultraviolet (EUV) ribbons and hard X-ray (HXR) footpoints. These are usually explained as the result of heating and bremsstrahlung emission from accelerated electrons colliding in the dense chromospheric plasma. We present evidence of impulsive heating of flare ribbons above 10 MK in a two-ribbon flare. We analyse the impulsive phase of SOL2013-11-09T06:38, a C2.6 class event using data from Atmospheric Imaging Assembly (AIA) on board of Solar Dynamics Observatory (SDO) and the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) to derive the temperature, emission measure and differential emission measure of the flaring regions and investigate the evolution of the plasma in the flaring ribbons. The ribbons were visible at all SDO/AIA EUV/UV wavelengths, in particular, at 94 and 131 \AA\ filters, sensitive to temperatures of 8 MK and 12 MK. Time evolution of the emission measure of the plasma above 10 MK at the ribbons has a peak near the HXR peak time. The presence of hot plasma in the lower atmosphere is further confirmed by RHESSI imaging spectroscopy analysis, which shows resolved sources at 11-13 MK associated with at least one ribbon. We found that collisional beam heating can only marginally explain the necessary power to heat the 10 MK plasma at the ribbons.Comment: 21 pages, 15 figure

Exchange rate policies, patterns of specialization and economic development : theory and evidence in developing countries

The objectives of this paper are twofold. First, it intends to provide theoretical elements toanalyze the relation between real exchange rates and economic development. Our mainhypothesis is very much in line with the Dutch disease literature, and states that competitivecurrencies contribute to the existence and maintenance of the manufacturing sector in theeconomy. This, in turn, brings about higher growth rates in the long run, given the existenceof increasing returns in the industrial sector, and its importance in generating technologicalchange and increasing productivity in the overall economy. The second objective of this paperis empirical. It intends to analyze examples of successful exchange rate policies, such as Chileand Indonesia in the eighties, as a benchmark for comparison with countries where currencyovervaluation has taken place, such as Brazil. In the latter case, the local currency is beinginflated by large capital inflows, due to high domestic interest rates and to a boom in demandand prices of commodities in the international markets. It will be argued that the industrialsector bears most of the burden when the currency appreciates, and that Brazil risks at deindustrializationif there are no changes in the exchange rate regime

Integração do Hospital de Alcobaça: do Centro Hospitalar do Oeste para o Centro Hospitalar de Leiria

O principal objetivo do presente documento consiste em apresentar e descriminar o trabalho desenvolvido na área de sistemas de informação, durante o processo de integração do Hospital de Alcobaça Bernardino Lopes Oliveira, no Centro Hospitalar Leiria Pombal E.P.E. O processo de integração deste hospital foi transversal a todos os serviços: Recursos Humanos, Gestão Financeira, Aprovisionamento, Gestão Doentes, Serviços Médicos e de Enfermagem, Meios Complementares de Diagnostico, Serviço de Instalações e Equipamentos. Na base deste processo esteve o Gabinete de Sistemas de Informação que em conjunto com o Serviço de Gestão de Doentes delinearem o plano de trabalho faseado, de forma a ser possível na data especificada pela tutela (Ministério da Saúde), avançar com este hospital devidamente integrado no Centro Hospitalar Leiria Pombal. Havia como objetivo que a transição fosse o mais transparente possível para os utentes e profissionais de saúde, de forma a não existir qualquer falha de serviço, que de alguma forma pudesse comprometer o funcionamento normal da unidade hospitalar que serve os doentes 24 horas por dia. Para garantir este objetivo foram definidas sete fases no processo de integração de ambos os hospitais, as quais serão detalhadas. Estas fases foram identificadas e planeadas pela equipa responsável pelo processo e correspondem às seguintes fases: Fase 1 - Prélevantamento, Fase 2 - Comunicações, Fase 3 - Levantamento exaustivo das existências e necessidades, Fase 4 - Parametrizações, Fase 5 - Importação de dados e Formação, Fase 6 - Arranque e por fim a Fase 7 – Acompanhamento e Apoio

User generated spatial content sources for land use/land cover validation purposes : suitability analysis and integration model

A thesis submitted in partial fulfillment of the requirements for the degree of Doctor in Information Management, specialization in Geographic Information SystemsTraditional geographic information has been produced by mapping agencies and corporations, using high skilled people as well as expensive precision equipment and procedures, in a very costly approach. The production of land use and land cover databases are just one example of such traditional approach. On the other side, The amount of Geographic Information created and shared by citizens through the Web has been increasing exponentially during the last decade, resulting from the emergence and popularization of technologies such as the Web 2.0, cloud computing, GPS, smart phones, among others. Such comprehensive amount of free geographic data might have valuable information to extract and thus opening great possibilities to improve significantly the production of land use and land cover databases. In this thesis we explored the feasibility of using geographic data from different user generated spatial content initiatives in the process of land use and land cover database production. Data from Panoramio, Flickr and OpenStreetMap were explored in terms of their spatial and temporal distribution, and their distribution over the different land use and land cover classes. We then proposed a conceptual model to integrate data from suitable user generated spatial content initiatives based on identified dissimilarities among a comprehensive list of initiatives. Finally we developed a prototype implementing the proposed integration model, which was then validated by using the prototype to solve four identified use cases. We concluded that data from user generated spatial content initiatives has great value but should be integrated to increase their potential. The possibility of integrating data from such initiatives in an integration model was proved. Using the developed prototype, the relevance of the integration model was also demonstrated for different use cases

MIMO antenna for mobile terminal

Dissertação para obtenção do Grau de Mestre em Engenharia Eletrónica de Telecomunicações e de ComputadoresNowadays there is a great demand for quality of service, higher bit rate and greater ef ficiency in mobile terminals, leading to technological advances in the world of telecom munications. MIMO technology makes use of multiple antennas in transmission and reception, allowing a higher data transfer rate and greater reliability without the need for extra power and bandwidth. In this MSc dissertation a planar IFA antenna was designed, which operates in the 2 Wi-Fi frequency bands of 2.4 GHz and 5 GHz. A MIMO system with 4 antennas based on the planar IFA, and its performance is analysed through key parameters such as correlation between elements, diversity gain and multiplexing efficiency. After the simulation and analysis of the system, a prototype was fabricated and measured in order to validate the coverage of the designated frequencies. The results achieved show that the designed antenna is feasible for WiFi applications, covering the intended frequency bands. In simulation the antenna obtains a good per formance in terms of MIMO parameters. A size/performance trade-off was applied to the final design, in favour of decreasing the size of the structure to make it possible to use it in smaller size devices.Nos dias de hoje existe uma maior exigência de qualidade de serviço, maior débito binário e maior eficiência nos terminais móveis, levando ao avanço tecnológico do mundo das telecomunicações. A tecnologia MIMO faz uso de múltiplas antenas na transmissão e na recepção, permitindo uma maior taxa de transferência de dados e uma maior fiabilidade sem a necessidade de aumentar a potência e largura de banda extra. Nesta dissertação de mestrado foi dimensionada uma antena IFA planar, que atua nas 2 bandas de frequência Wi-Fi de 2.4 GHz e 5 GHz. Um sistema MIMO com 4 antenas baseado nesta antena é concebido, sendo o seu desempenho analisado através de parâmetros chave, como a correlação entre elementos, ganho de diversidade e a eficiência de multiplexagem. Após a simulação e análise do sistema, foi fabricado e medido um protótipo de forma a validar o desempenho da antena projetada. Os resultados alcançados demonstram que a antena projetada é viável para aplicações WiFi, cobrindo as bandas de frequência pretendidas. Em simulação a antena obtém um bom desempenho em termos de parâmetros MIMO. Foi aplicado ao design final um compromisso dimensão/desempenho, em prol de diminuir o tamanho da estru tura para tornar possível a sua utilização em dispositivos móveis de tamanho mais reduzido.info:eu-repo/semantics/publishedVersio