Lista de Projetos

Este projeto tem como objetivo analisar as formas de participação e engajamento cívico dos jovens nos subúrbios de Lisboa, particularmente em espaços urbanos segregados socialmente. Recusando a imagem comum que associa o subúrbio a um espaço homogéneo e “sem cultura”, onde as pessoas viveriam estilos de vida semelhantes, propomos uma etnografia de três bairros diferentes, todos palcos de atuação do Programa Escolhas. Analisaremos o que de novo tem sido criado pelos jovens em termos culturais, artísticos e associativos, no contexto de um maior protagonismo da juventude no exercício (e reclamação) dos direitos de cidadania em Portugal. Num momento de agravamento da crise económica, os jovens dos subúrbios mobilizam-se, criando novos espaços e práticas coletivas, preferencialmente em torno da produção cultural. Pretende-se, ainda, analisar o impacto dessas práticas nas trajetórias de vida dos jovens. O enfoque no Programa Escolhas permitirá enquadrar novas formas de agregação juvenil por referências às políticas públicas.

This project aims to advance the state-of-the-art in terms of 3D holoscopic content representation, processing and coding. To enable adequate compatibility (to some extent) with legacy displays (e.g., 2D, stereoscopic, or multi-view) efficient scalable representations will be investigated. Whenever appropriate, the emerging scalable extensions of the High Efficiency Video Coding (SHVC) standard will be explored by extending these solutions to 3D holoscopic content. Additionally, since some envisaged delivery channels are critical in terms of channel errors/data losses, this project will also investigate new error control techniques that are specific for 3D holoscopic content.

The objective of this paper is to evaluate from the output surface the damage of the catalytic tubes of the columns of the reformer furnaces in order to predict its remaining life. Catalytic tubes are the most critical components in reformer furnaces. Reformer furnaces are widely used in the petrochemical industry to produce hydrogen from hydrocarbons. It is in the radiant tubes containing a catalyst that the hydrogen production takes place, as a result of endothermic reactions between hydrocarbons (mostly methane) and water vapor. These reactions proceed at a temperature range between 800 and 900 deg C and the working pressure in a reformer furnace is between 2 and 5 MPa. These are severe working conditions that cause structural damage in the tubes. It is necessary to develop methods for the inspection of tube degradation and for a realistic prediction of its residual life.Some analytical methods have been developed to estimate reformer columns service life or the time to failure, as the assessment of damage and advance planning of column replacement should be made to ensure that failures or unplanned shutdowns are avoided. However, direct methods to evaluate the probable extent of damage and remaining life in a particular furnace are always much more preferable. Nowadays, direct tests are performed destructively by examining metallographically the microstrutural changes and creep damage on a series of ring samples cut along the length of single tube removed from the reformer furnace. The objective of this project is to project and implement an in-situ measurement system to inspect through a nondestructive testing (NDT) technique, based on eddy currents, reformer tubes damages to infer about its remaining life. The eddy current method is based on the excitation of the material with a time variable magnetic field. In this way, the electromotive force developed inside the material will give rise to electric eddy currents. These currents are related to the conductivit...