O temporal de 3 a 6 de Dezembro de 1739 em Portugal - reconstituição a partir de fontes documentais descritivas

THE WEATHER IN PORTUGAL BETWEEN 3 AND 6 DECEMBER 1739 (BASED ON DESCRIPTIVE DOCUMENTAL SOURCES). Instrument-based meteorological observations in mainland Portugal started to be gathered in the 1770s. Weather in Portugal before that time can therefore only be reconstructed based on descriptive documental sources in which generally only extreme weather events are recorded. Due to the subjectivity of this type of information, critical analysis of the sources, their diversity and data crossing prove essential in order to be able to assess their trust-worthiness. Here we have chosen to analyse a gale that swept across much of mainland Portugal between 3 and 6 December 1739. The violent winds coming from the South, which according to reports may have reached speeds of 120km/h, were accompanied by heavy, continuous rain that produced flooding in the basins of the rivers Tagus, Mondego and Douro. Large-scale damage would have occurred, backed up by references to the death of many animals and the loss of human lives. As nowadays, these storm events were originated from winds coming from the South

A domain specific language for domotic systems

To cope with modernity, the interesting of having a fully automated house has been increasing over the years, as technology evolves and as our lives become more stressful and overloaded. An automation system provides a way to simplify some daily tasks, allowing us to have more spare time to perform activities where we are really needed. There are some systems in this domain that try to implement these characteristics, but this kind of technology is at its early stages of evolution being that it is still far away of empowering the user with the desired control over a habitation. The reason is that the mentioned systems miss some important features such as adaptability, extension and evolution. These systems, developed from a bottom-up approach, are often tailored for programmers and domain experts, discarding most of the times the end users that remain with unfinished interfaces or products that they have difficulty to control. Moreover, complex behaviors are avoided, since they are extremely difficult to implement mostly due to the necessity of handling priorities, conflicts and device calibration. Besides, these solutions are only reachable at very high costs, yet they still have the limitation of being difficult to configure by non-technical people once in runtime operation. As a result, it is necessary to create a tool that allows the execution of several automated actions, with an interface that is easy to use but at the same time supports all the main features of this domain. It is also desirable that this tool is independent of the hardware so it can be reused, thus a Model Driven Development approach (MDD) is the ideal option, as it is a method that follows those principles. Since the automation domain has some very specific concepts, the use of models should be combined with a Domain Specific Language (DSL). With these two methods, it is possible to create a solution that is adapted to the end users, but also to domain experts and programmers due to the several levels of abstraction that can be added to diminish the complexity of use. The aim of this thesis is to design a Domain Specific Language (DSL) that uses the Model Driven Development approach (MDD), with the purpose of supporting Home Automation (HA) concepts. In this implementation, the development of simple and complex scenarios should be supported and will be one of the most important concerns. This DSL should also support other significant features in this domain, such as the ability to schedule tasks, which is something that is limited in the current existing solutions

Temperature and precipitation reconstruction in southern Portugal during the late Maunder Minimum (AD 1675–1715)

This paper discusses the research carried out to check the climatic characteristics of the late Maunder Minimum (LMM) (AD 1675–1715) in the southwestern part of the Iberian Peninsula and as an aid towards pressure patterns reconstruction in the NE Atlantic and Europe. Documentary evidence reveals that interannual precipitation variability was similar to the present one, although some very severe dry periods occurred (particularly one in 1694). On the other hand, during the LMM there was a higher percentage of cold winter months, some of them with snowfall. A brief comparison is made with other areas from the Mediterranean. The relationships between weather similarities and differences for particular months is analysed in the light of the reconstructed synoptical patterns, and further research into historical climatic change of southern Europe is suggested.info:eu-repo/semantics/publishedVersio

Estudo de caso: Génese, implementação e evolução do Sistema Integrado de Gestão (SIG/MDN) no Exército Português

Do decorrer da atual conjuntura política e sociocultural vemo-nos cada vez mais sensibilizados e alertados para os problemas resultantes de uma gestão menos apropriada e que, muitas vezes, leva ao desperdício e dissipação de recursos que, na sua maioria, são escassos e diminutos. Atualmente, os sistemas de informação têm um papel preponderante e influente no auxílio e apoio à tomada de decisão. Procura-se, deste modo, identificar quais os aspetos, condições e mecanismos de apoio que, com a implementação do Sistema Integrado de Gestão no Exército Português, foi possível criar e potenciar para auxiliar a execução e controlo da Gestão Estratégica no seio da organização. Neste contexto, o presente trabalho tem como objeto de estudo a implementação do Sistema Integrado de Gestão no Exército Português e o modo como este influenciou e alterou a forma de trabalhar, bem como quais as potencialidades e vantagens da utilização deste sistema no auxílio e apoio à tomada de decisão. De acordo com o referido anteriormente, derivam os objetivos de compreender como foi o processo de implementação do Sistema Integrado de Gestão e quais foram as maiores dificuldades sentidas aquando da sua inserção, bem como as sentidas atualmente. Para o estudo da problemática erguida, e para a execução dos objetivos mencionados, realizou-se uma recolha de dados que teve como base o método hipotético-dedutivo. Os resultados obtidos demonstram que, atualmente, o Exército Português ainda não utiliza o sistema na sua totalidade, bem como não tira partido de várias potencialidades que o mesmo permite. Conclui-se que é possível, através do Sistema Integrado de Gestão, ter uma ferramenta de apoio à tomada de decisão, assim como a realização de diversos processos de forma muito mais eficaz e eficiente.From the current political and sociocultural conjecture, people are more wary and alert of the problems coming from a less efficent management, which, many times, can lead to waste and misuse of resources, being scarce and few. Nowadays, information systems play a huge role in helping and suporting decision making. Hereby, we look to identify which aspects, conditions and support mechanisms that, appliying the Management Integrated System in the Portuguese Army, are possible to create and potentiate the execution and control the Stategic Management in the mist of the organization. In this context, the research subject from the present work is to understand the implemantation of the Management Integrated System in the Portuguese Army, and how it influenced and changed the way to work, as well as the potential and advantages of using this system in the decision making process. As previously mentioned, the purpose is trying to understand how the Management Integrated System implementation process was, and which were the main difficulties of its inception, as well as its present difficulties. In order to answer these questions, and to execute the main purposes of this work, a data base gathering was made using the hipothetic-deductive method. The results obtained show that, nowadays, the Portuguese Army still does not use the system at its fullest, as does not take advantage of the several benefits associated with the system. It is possible to conclude, through the Management Integrated System, that we have a decision-making suport tool, as it allows to have more efficient and effective processes

Backoffice web: distribuição do serviço docente

Mestrado em Engenharia de Computadores e TelemáticaA Distribuição do Serviço Docente (DSD) das instituições de ensino superior e composta por um conjunto tarefas complicadas dado que lidam com um número elevado de objectos e restrições. Estas tarefas tornam-se ainda mais complexas com o aumento de alunos, docentes e disciplinas e com a escassez de recursos. As ferramentas informáticas são ferramentas capazes de ajudar a encontrar melhores soluções para este tipo de problemas. O Departamento de Electrónica, Telecomunicações e Informática (DETI) conta já com uma plataforma informática que tem como objectivo ajudar o departamento a executar todas estas tarefas de uma forma centralizada. Esta dissertação centra-se na evolução da plataforma, criando novas funcionalidades e interligando-a com outras plataformas já existentes na Universidade de Aveiro de modo a minimizar toda a interacção manual ainda efectuada.The scheduling of the teaching sta on universities is a challenging task which deals with a huge number of actors and restrictions. Its complexity increases with the raising number of students, teachers and classes and the no-existence of resources. Informatic tools can be used to nd the best solution for this kind of problems. The Department of Electronic, Telecommunications and Informatics (DETI) has already an informatic platform with the goal to help the department to perform all this tasks in a centralized way. This thesis is about the evolution of this platform, adding functionalities and integrating it with existent platforms in the university of Aveiro, reducing all the manual work that is currently performed

Temperature and precipitation reconstruction in southern Portugal during the late Maunder Minimum (AD 1675–1715)

This paper discusses the research carried out to check the climatic characteristics of the late Maunder Minimum (LMM) (AD 1675–1715) in the southwestern part of the Iberian Peninsula and as an aid towards pressure patterns reconstruction in the NE Atlantic and Europe. Documentary evidence reveals that interannual precipitation variability was similar to the present one, although some very severe dry periods occurred (particularly one in 1694). On the other hand, during the LMM there was a higher percentage of cold winter months, some of them with snowfall. A brief comparison is made with other areas from the Mediterranean. The relationships between weather similarities and differences for particular months is analysed in the light of the reconstructed synoptical patterns, and further research into historical climatic change of southern Europe is suggested.info:eu-repo/semantics/publishedVersio

Adaptive surfing: leisure, competition or therapy?

Adaptive surfing is an outdoor sports activity which is practice in a natural, dynamic and high challenging environment. The moving waves, rip currents, tides and the beach appears as an innovative approach if compared to other traditional adaptive water sports (such as swimming, rowing or sailing). In this basis we can divide adaptive surfing in three major types of interventions: as recreative/leisure activity and play, as sportive competition and high-performance sports; or as therapeutic technic or with rehabilitation proposes. Nowadays adaptive surfing is finally being considered as highly important not only by surfers, therapists and social workers but also by the general public and a number of politicians as a crucial instrument for social inclusion worldwide. We hope to see more adaptive surfing programs and projects worldwide in the next years and hope it will gain more attention from governmental and non-governmental organizations in order to obtain more funding to support these programs. More funding would enable researchers to conduct this kind of work more often and produce more extensive data to support the case for the usefulness of adaptive surfing

Análise numérica e experimental do processo de trefilação de fios aplicados a cabos condutores

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2017.Neste trabalho, é feito um estudo sobre o processo de fabricação nomeado Trefilação, o qual é utilizado na indústria para a concepção de fios, arames e vergalhões com procedimento de deformação à frio durante conformação. O trabalho aqui é dividido em duas etapas, experimental e numérica, apresentando foco na obtenção das propriedades do material (curva de encruamento) através da dureza Brinell e simulação por elementos finitos do procedimento de trefilação real aplicado a uma empresa especializada no ramo. O objetivo é encontrar as propriedades mecânicas dos fios em cada etapa da trefilação a partir das propriedades no vergalhão antes da conformação mecânica. A principal motivação para este trabalho é a compreensão mais aprofundada do processo de trefilação e futura predição das propriedades mecânicas e qualidade do produto medidas em cada etapa. Para obtenção dos dados experimentais com agilidade e buscando comparar casos que envolvam sistemas no regime compressivo, é realizado um ensaio de dureza Brinell, sendo o mesmo modelado através de método dos elementos finitos, realizando rotina de identificação paramétrica e simulação numérica do ensaio de dureza para a determinação da marca da impressão deixada pelo perfurador no corpo de prova. Esses dados encontrados no material em seu estado inicial (vergalhão) são tidos como base para inserção no programa ABAQUS na realização da simulação do processo de trefilação, já os dados nos fios pós fieira 1, 2 e 3 servirão de comparação com os resultados numéricos. Seguindo o modelo matemático viscoplástico para o caso multiaxial, considerando o critério de escoamento de von Mises e endurecimento isotrópico com efeito viscoplástico, foi criado um modelo usando o método de elementos finitos para simular o processo de trefilação, identificando os parâmetros dominantes. Utiliza-se uma modelagem com simetria de rotação em relação ao eixo longitudinal do sistema fio/fieira, considerando-se uma peça de trabalho com forma cilíndrica. Este modelo permite observar, em detalhes, os fenômenos de acumulo de tensões residuais, deformações plásticas equivalente e tensões trativas e compressivas que podem ocorrer durante a trefilação, sendo os resultados utilizados para uma investigação computacional dos parâmetros e suas influências durante o processo. Os efeitos obtidos através de elementos finitos são comparados com os experimentais (pós fieira 1, 2 e 3) através de modelo também proposto neste trabalho.In this report, a study is made on the manufacturing process named Wire Drawing, which is used in the industry for the design of wire and rebar with cold deformation during conformation. The work here is divided in two stages, experimental and numerical, presenting a focus on obtaining the properties of the material (hardening curve) through Brinell hardness and simulation by finite elements of the real drawing process applied to a company specialized in the field. The objective is to find the mechanical properties of the wires at each step of the wire drawing from properties in the rebar before the mechanical conformation. The main motivation for this report is the more in-depth understanding of the wire drawing process and future prediction of the mechanical properties and product quality measured at each stage. To obtain the experimental data with agility and seeking to compare cases involving systems in the compressive regime, a Brinell hardness test is performed, being it modeled by finite element method, performing parametric identification routine and numerical simulation of the hardness test for the determination of the imprint mark left by the punch on the specimen. The data found in the material in its initial state (rebar) are taken as the basis for insertion in the ABAQUS program in the realization of the simulation of the wire drawing process, since the data in the die post 1, 2 and 3 will serve as a comparison with the numerical results. Following the viscoplastic mathematical model for the multiaxial case, considering the von Mises flow criterion and isotropic hardening with viscoplastic effect, a model was created using the finite element method to simulate the wire drawing process, identifying the dominant parameters. A model with rotation symmetry is used with respect to the longitudinal axis of the wire/die system, considering a workpiece with a cylindrical shape. This model allows to observe, in detail, the phenomena of accumulation of residual stresses, equivalent plastic deformations and tensile and compressive stresses that can occur during wire drawing, being the results used for a computational investigation of the parameters and their influences during the process. The effects obtained through finite elements are compared with the experimental ones (post 1, 2 and 3) through a model also proposed in this report

The meteorological framework and the cultural memory of three severe winter-storms in early eighteenth-century Europe

Three violent eighteenth-century storms that ravaged the North Sea area (1703), western central Europe (1739) and Portugal (1739) are investigated from the point of view of their meteorological setting, their socio-economic impact, and whether and by what means they secured an enduring place in the cultural memory. The evidence draws on individual narrative sources such as chronicles and poems, and institutional sources such as ship's logbooks and state-organised ‘windthrow' inventories of tree loss. Each of the three storms had socio-economic impacts that could be described as ‘war-like' in the damage caused to buildings and the destruction of forests. The "Great Storm” of December 1703 jeopardized English naval supremacy in the War of the Spanish Succession by sinking a number of Royal Navy ships and taking the life of more than 8000 seamen. In January 1739 two similarly destructive storms swept over mainland Europe. The cultural memory of the three events here considered was however strikingly different. The sequence of storms in January 1739 though being the most protracted of the last centuries, and well-chroniceled, did not persist in the collective memories of those in France, Switzerland and elsewhere who experienced them. Likewise, the "Great Storm” was quickly forgotten on the continent, whereas its memory remained deeply rooted in England through the writings of Defoe (1704). In Portugal the 1739 storm won a lasting place in the country's cultural memory owing to two poems that it inspired. Furthermore, it was recorded in the Kingdom's official newspaper, in the astronomical prognoses and in written records of the Old Regime's cultural elit