Julião Sarmento: The Innuendo of the Real

Julião Sarmento’s body of work crosses artistic disciplines and fields. The artist resorts to film and video as a means to reach the artistic expression of an idea, open to an infinitude of interpretations. This audiovisual essay looks at the way Julião Sarmento works with moving images, focusing in three main perspectives: the word, the (feminine) body and rhythm. We conclude that each one of Sarmento’s works builds a system of codes, of communication, that opens new understandings of the human relation with the ‘real’

Experimental and Numerical Analysis of a Sprint Canoe for the Olympic Games

Portuguese culture has always been interconnected with nautical culture. Nowadays, Portugal is a powerful country in canoeing. Besides athletes, excellent training places, Portugal is one of the best manufacturers of canoes and kayaks in the world. To have a constant evolution in the design of the boats, it is crucial to study the hydrodynamics of canoes. Therefore, the present work arises in the context of the lack of scientific studies in the area of hydrodynamics in canoeing, mainly the C1 boat. In this dissertation, simulations of Computational Fluid Dynamics (CFD) were performed in order to simulate the water and air flow around the hull of two canoes to evaluate their performance. For this, the Fluid Volume method (VoF) was used to simulate the free surface, and the turbulence model ?­e Standard to simulate the turbulence. A mesh independence study was also carried out to ensure that the mesh used does not affect the intended results. The software used for this analysis was Ansys Fluent 2019 R3. In order to validate the numerical study, experimental tests were performed at full scale. The numerical model was then applied to the two vessels, where the resistance to advance of the canoes, at a range of velocities was studied, as well as for different pitch angle. Also for comparison purposes the wave elevation, as well as the effect of the flow velocity, in both canoes were evaluated. For the C1 5 L model, the values were overestimated numerically, while for the other model, the C1 8 L, the results were closer to the values obtained experimentally. Other numerical studies have shown similar problems, which possibly has to do with the exact determination of the waterline position, which significantly influences the final results.A cultura portuguesa esteve sempre interligada com a cultura náutica. Atualmente, Portugal é uma potência na modalidade de canoagem. Para além de atletas, excelentes locais de treino, Portugal, é um dos melhores fabricantes de canoas e kayaks a nível mundial. Para haver uma constante evolução dos designs dos barco, é crucial estudar a hidrodinâmica das canoas. Assim, este trabalho surge no âmbito da falta de estudos científicos na área da hidrodinâmica na canoagem, principalmente da embarcação C1. Nesta dissertação foram realizadas simulações de Dinâmica de Fluidos Computacional (CFD), com o objetivo de simular o escoamento de água e ar em torno do casco de duas canoas, para avaliar a performance destas. Para isso, foi utilizado o método do Volume de Fluido (VoF) para simular a superfície livre, e o modelo de turbulência ?­e Standard para simular a turbulência. Foi também realizado um estudo de independência de malha para garantir que a malha utilizada não afeta os resultados pretendidos. O software utilizado para esta análise foi o Ansys Fluent 2019 R3. Com vista a validar o estudo numérico, foram realizados testes experimentais à escala real. O modelo numérico foi então aplicado às duas embarcações, onde foi estudada a resistência ao avanço das canoas para uma gama de velocidades, assim como para diferentes arfagens. Também para efeitos de comparação foram avaliadas a elevação de onda, assim como o efeito da canoa nas velocidades do escoamento em ambas as canoas. Para o modelo C1 5 L, os valores foram sobrestimados numericamente, enquanto que para o outro modelo, a C1 8 L, os resultados foram mais próximo dos valores obtidos experimentalmente. Outros estudos numéricos demonstraram problemas semelhantes, o que possivelmente terá a ver com a determinação exata da posição da linha de água, que influencia significativamente os resultados finais

BASSILO - Battery storage sizing and location in distribution systems

This thesis addresses the problem of sizing and optimal location of non-domestic energy storage, batteries, in distribution networks that integrate distributed photovoltaic generation, with the objective of analysing its exploration potential in the energy business. For this purpose, a formulation based on line programming and the EPSO metaheuristic (Evolutionary Particle Swarm Operation) has been proposed for the minimization of the costs of including a storage system in the energy grid.Given the size and location of the battery, a formulation based on linear programming will allow to determine the optimal operation of the battery for the following cases: in the first study, the operation of the battery in the base of one day. In the second, the operation of the battery in the base of multiple consecutive days. The optimal size and location of the battery is determined using the EPSO metaheuristics, which will evaluate the costs involved in the two perspectives of operation of the battery, previously proposed.The results presented are for a realistic power network, CIGRE - European MV distribution network benchmark, modified to be operated as a radial network, comprising distributed loads (commercial and residential) and photovoltaic generation for several operating scenarios in which the variation of energy prices, are considered to validate the proposed business exploration model

Study of automatic validation of technical specifications of complex products: case study applied to an Exhaust Gas Recirculation module (EGR)

Dissertação de mestrado integrado em Engenharia MecânicaThis academic work consists in the study of mechanisms that can validate the technical specifications of a certain product, in this case, an EGR Module. Initially, an analysis about the origin of these systems, their functionality and how they are produced was made. This part of the work gives most of the theoretical knowledge necessary to procced to the study of the main subject: Automatic Validation of Technical Specifications of Complex Products. Then, a study of a specific EGR Module was carried out, going through every phase of its development, starting with Design Development, where the product was drawn, and several design alterations were made due to failures in the test benches and simulations. The Process Development starts with the design freeze of the last design of the Design Development, the dimensioning of the tools specific for this product and with flow-chart of the process, which gives for the first time an overlook of the process itself. After this the production line starts to be designed to fulfill the demands of the client. In this production line design, there is seen how it is possible to assure the quality of the product and which machines are fully responsible for controlling the specifications of the product. Finally, the production line is validated with multiple tests that measures how the measure process is exact, precise and feasible, being done MSAs, R@R, Capability Tests, etc.Este trabalho académico consiste no estudo de mecanismos que podem validar as especificações técnicas de um determinado produto, neste caso, um Módulo EGR. Inicialmente, é feita uma análise sobre a origem destes sistemas, a sua funcionalidade e a forma como são produzidos. Esta parte do trabalho confere a maior parte dos conhecimentos teóricos necessários ao estudo do tema principal: a Validação Automática de Especificações Técnicas de Produtos Complexos. Em seguida, é realizado um estudo de um Módulo EGR específico, passando por todas as fases do seu desenvolvimento, começando com o Design Development, onde o produto foi desenhado, e várias alterações de design foram feitas devido a falhas nos bancos de teste e simulações. O Process Development começa com o design freeze do último design do Design Development, o dimensionamento das ferramentas específicas para este produto e com o flow-chart do processo, o que dá pela primeira uma imagem do próprio processo. Depois disso, a linha de produção começa a ser projetada para corresponder às exigências do cliente. Neste desenho da linha de produção, verifica-se como é possível assegurar a qualidade do produto e quais as máquinas que são totalmente responsáveis pelo controlo das especificações do produto. Finalmente, a linha de produção é validada com múltiplos testes que medem como o processo de medida é exato, preciso e exequível, sendo feitos MSAs, R@R, Testes de Repetibilidade, etc

Data Migration to Cloud in ERP Implementations

The concept of Cloud Computing has evolved constantly, in strand of service models, based on the creation and share of several technological resources. Increasingly, it has used virtualization technology to optimize resources, which are shared by all accounts, in a self-service format. All these features result in a flexible and progressive behavior of resources. The management of the service provided, is made based on the service level agreement established between the client and the cloud provider, and the constant technological developments can quickly change depending of the requirements. That said, knowing the current state of Wipro with respect to the concepts of data migration and cloud being combined into one, it is very challenging to design and build a possible process to help the company make this transition. Especially, when there is already a tool that has been used for several years and it is intended to be part of this integration with a new possible solution that is described along this document. The study, of qualitative nature, is guided by different case studies when it comes to the processes being used to migrate data into Cloud. The main objectives are to find new solutions that increase productivity of the company, save human resources that can be reallocated to other tasks, ending up to be considered innovative solutions, with rapid implementations and most importantly with low cost. What ends up in the overall objective of this dissertation that is to examine the feasibility of the adoption of Cloud Computing in Wipro Portugal through two main points: • The migration of data into Cloud; • Integration with Data Conversion Tool (DCT). We believe that this approach is very meaningful towards encouraging greater productivity and obtaining new achievements. Concerning the empirical study, there is a big number of tools that can be investigated later as possible solutions for other kind of implementations than Oracle Retail. For now this dissertation focus in the current OR business approaches and points for Oracle Cloud as the main Cloud Computing Service due to its partnership with Wipro. Both solutions that were implemented, SQL Loader and Golden Gate, seem viable and versatile as they can be integrated with the current tool, DCT and are capable of loading several amounts of data without any issues. In terms of performance Golden Gate seems to be a few steps above of SQL Loader, but requires deeper analysis when using multi threading as an option in both methods, and the containerization of the databases can be very relevant regarding the times of loading. In general, good solutions are available and need to be taken into consideration by the company as they can help to leverage its resources in a more efficient way and the main objective of having data in the Cloud was reached, having gathered knowledge about the behaviour of Oracle Cloud and some of the services

Transcriptomic effects of the non-steroidal anti-inflammatory drug Ibuprofen in the marine bivalve Mytilus galloprovincialis Lam

The transcriptomic effects of Ibuprofen (IBU) in the digestive gland tissue of Mytilus galloprovincialis Lam. specimens exposed at low environmental concentrations (250 ng L-1) are presented. Using a 1.7 K feature cDNA microarray along with linear models and empirical Bayes statistical methods 225 differentially expressed genes were identified in mussels treated with IBU across a 15-day period. Transcriptional dynamics were typical of an adaptive response with a peak of gene expression change at day 7 (177 features, representing about 11% of sequences available for analysis) and an almost full recovery at the end of the exposure period. Functional genomics by means of Gene Ontology term analysis unraveled typical mussel stress responses i.e. aminoglycan (chitin) metabolic processes but also more specific effects such as the regulation of NF-kappa B transcription factor activity. (C) 2016 Elsevier Ltd. All rights reserved