A forma e evolução urbanas de núcleos marítimos portugueses no início do seculo XX: a influência da indústria de conservas no desenho territorial

A análise da forma e evolução urbanas é o caminho para a compreensão da própria cidade, e obriga quase sempre a uma avaliação própria do que concerne ao método e ferramentas de análise, focada em cada situação e descartando abordagens generalizadas. Cada espaço urbano pode ser contextualizado em função da sua utilização e das práticas sociais. Demonstra-se como se podem usar ferramentas complementares ao estudo da forma e evolução urbanas, em função da influência de uma determinada indústria, no caso a das conservas, no desenho territorial. Para descodificar morfologicamente o espaço urbano recorre-se a comparações e correlações entre 6 casos de estudo – Setúbal, Matosinhos, Peniche, Espinho, Lagos e Portimão. Enquadram-se estes núcleos numa análise de fontes primárias e análise estatística geral. A partir desta contextualização é possível sistematizar o problema e trabalhar no encontro concreto de influências que uma qualquer actividade económica pode exercer sobre um território específico.The analysis of urban shape and evolution is the way for the understanding the city and forces an evaluation of the method and the analysis tools, focusing on each situation, avoiding generalized approaches. Each urban space can be explained by its use and social practices. We demonstrate the use of complementary tools for the study of urban shape and evolution, as a result of the influence of a determined industry, specifically canning, in spatial design. To morphologically decode the urban space, we resort to comparisons and correlations between 6 case studies - Setúbal, Matosinhos, Peniche, Espinho, Lagos and Portimão. These clusters are analyzed by using primary sources and statistical analysis. From this context it is possible to systematize the problem and find the influence that any economic activity can exercise over a specific territory.Peer Reviewe

A intervenção educativa da educadora de infância a partir dos conhecimentos prévios das crianças: um estudo na área de conhecimento do mundo

Dissertação de mest., Educação Pré-escolar, Escola Superior de Educação e Comunicação, Univ. do Algarve, 2013A presente investigação, de natureza qualitativa, tem como objetivo principal compreender o modo como a educadora de infância gere a sua intervenção educativa a partir dos conhecimentos prévios das crianças Como tal, procurámos conhecer o modo de intervenção educativa da educadora cooperante no decorrer da realização de um projeto de ação, na área do conhecimento do mundo, com as crianças, nas suas diferentes fases: observação, planificação, ação, avaliação, comunicação e articulação. Em síntese, a realização deste Relatório de Prática de Ensino Supervisionada permitiu-nos compreender que a metodologia de trabalho de projeto promove uma participação ativa da criança na construção do seu próprio conhecimento, devendo, para tal, o educador agir com intencionalidade a partir de um conhecimento profundo da criança, numa perspetiva de diferenciação pedagógica. Este estudo permitiu-nos, assim, desenvolver conhecimentos e procedimentos para uma melhor compreensão do processo de ensino e de aprendizagem, tornando-nos mais competentes no desenvolvimento de uma prática educativa de qualidade

An experimental study on the impact of color variety on the perception of snack food products

Dissertation presented as the partial requirement for obtaining a Master's degree in Information Management, specialization in Marketing IntelligenceDespite people’s intentions on eating healthier, obesity rates have been on the rise. The increase in caloric intake and energy-dense foods between main meals (unhealthy snacks) represent an accounting explanation for increased obesity. Evidently, people often rely on their perceptions rather than on nutritional information, thus visual properties of snacks, including color variety, might be an important cue to promote healthy snacking choices. Research exploring the impact of color variety on the perceptions of snacks is limited, particularly in adults. This research addresses this gap by investigating, through an experimental approach, the influence of high color variety (vs. low color variety) on adults’ perceptions of taste, desire, and healthiness for healthy and unhealthy snacks. Participants were randomly exposed to one of four different snacking images: healthy or unhealthy snacks containing high or low color variety. Both healthy and unhealthy snacks were perceived as tastier when high in color variety (vs. low color variety) and the influence of high-color variety was associated with a stronger desire for healthy snacks. While no influence of color variety was found on the perceived healthiness of unhealthy snacks, healthy snacks high in color variety were perceived as healthier. The implications of this research for companies, consumers, and the public health community are discussed

Nanoscale Memristor: Great potential for memory and synapse emulator for computing applications

This work reports the fabrication and electrical characterization of Metal-Insulator-Metal (MIM) devices for neuromorphic applications using zinc-tin-oxide (ZTO) and indium-gallium-zinc-oxide (IGZO) as the switching layers and molybdenum (Mo) for the devices ‘contacts. A lithographic mask was used along with physical vapor deposition (PVD) processes for the production of the different samples’ layers. Using ZTO as a switching layer in order to replace other elements that are becoming scarce such as indium or gallium is of relevant importance, therefore it was first attempted a ZTO based MIM device. Upon electrical characterization the ZTO devices show an analog behavior without the need of current compliance (being therefore self-limited), good multilevel storage property, reliability and a stable state retention for long periods of time. It is suspected a 2D type of switching mechanism, based on the tunneling through a Schottky barrier at the interface, however the details of the exact mechanism aren’t yet clear. Furthermore, the device is highly prone to interact with humidity present in the atmosphere and some fabrication steps, which is a possible explanation for the anticlockwise RESET. A second batch of ZTO devices was fabricated in order to remediate the RESET process, using a passivation step, however the RESET direction wasn’t affected although the rectification properties of the devices were enhanced. Since upon pulse testing the ZTO devices behaved erratically, this switching layer was discarded and IGZO used instead. With this alternative amorphous oxide semiconductor material, the symmetry and linearity of the conductance change was evaluated and transition from STP (Short-Term Potentiation) to LTP (Long-Term Potentiation) successfully demonstrated upon pulse repetition, showing similar decay fashion to human memory, following a Kohlrausch-Williams-Watts function (commonly called “stretched-exponential function”)

Semi-active fuzzy control for variable damping devices for seismic protection

Trabalho apresentado em 17 WCEE – World Conference on Earthquake Engineering, 13 - 18 Setembro 2020, Sendai, JapanDynamic actions, in general, and earthquakes, in particular, can transmit very high forces to structures. Protection control systems have been developed to reduce the damaging effect of those actions. Semi-active control devices may generally be referred to as controllable passive devices. The semi-active control approach consists of the indirect application of variable control forces whose energy derives directly from the motion of structures and is obtained by instantaneous change of the parameters and dynamic characteristics according to a predetermined control criterion. No mechanical energy is inputted directly into the structure, making the entire system intrinsically dynamically stable. The efficiency of the protection will depend on the efficiency of the control algorithm. Fuzzy control has been widely implemented in many fields due to its efficiency, while having simple and straightforward rules. In structural control, fuzzy logic has an interesting potential for mitigating earthquake vibrations. The reaction of a fuzzy control system can suitably adapt to the high randomness of seismic accelerations, so algorithms of this type of control should be developed, analyzed and studied for structural application. An algorithm using fuzzy control has been developed for application in a semi-active variable damping device for controlling seismic actions in structures. Input membership functions were selected using ground acceleration feedforward control and displacement and velocity feedback control. The output pertinence functions set the damping value to be selected for the device using the centroid method. All membership functions were defined using a triangular function. In this paper, the proposed algorithm is presented, described and tested with numerical simulations. The tests were performed using artificial accelerograms representative of the Portuguese Seismic Action in a one degree of freedom and two degrees of freedom models. The results are then compared with traditional passive protection using a viscous damper, allowing to compare the efficiency of the proposed original fuzzy control algorithm.info:eu-repo/semantics/publishedVersio

Are state-owned firms less profitable than non-state-owned firms? European evidence

Prior research suggests that state-owned enterprises (SOE) have lower performance levels than non-state-owned enterprises (NSOE). The main goal of this study is to analyse the impact of State ownership on profitability, using two major measures of performance: Return on Equity and Return on Assets, and a broader sample of about 11,000 firms, from 37 countries, between 2003 and 2011. Our main results suggest that SOE are less profitable than NSOE for both performance measures. This finding remains equal in the crisis periods and for Western and Eastern Europe countries. We also find a negative relationship between State control and SOE´s profitability levels. Additional results indicate that, in general, SOE from Western Europe are more profitable than SOE from Eastern Europe.info:eu-repo/semantics/publishedVersio