O outro no projeto de design: : relatos em moda

This article reports the methodological experience in two design disciplines in the Bachelorin Fashion Design course. In both cases, the project is carried out from the meeting withpeople who are not from the area. Following the conception that design is an interdisciplinaryfield, multiple voices are fundamental for the formation of a designer who works on buildinga more fair and respectful society. In order to theoretically base the methodologies proposedin the disciplines, it starts from participatory design up to contemporary lines, which seek toexpand both ways of making design and its fields of activity.Este artículo informa sobre las experiencias metodológicas en dos disciplinas de diseñoen el curso de Bachillerato en Diseño de Moda. En ambos casos, el proyecto se lleva a cabocon la reunión de personas que no son del área. Siguiendo la concepción de que el diseño esun campo interdisciplinario, las voces múltiples son fundamentales para la formación de undiseñador que trabaje en la construcción de una sociedad más justa y respetuosa. Para basarteóricamente las metodologías propuestas en las disciplinas, parte del diseño participativohasta líneas contemporáneas, que buscan expandir tanto las formas de hacer el diseño comosus campos de actividad.Este artigo relata as experiências metodológicas em duas disciplinas de projeto no cursode Bacharelado em Design de Moda. Em ambos os casos, o projeto é realizado a partir doencontro com pessoas que não são da área. Seguindo a concepção de que o design é umcampo interdisciplinar, múltiplas vozes são fundamentais para a formação de um designerque atua na construção de uma sociedade mais justa e respeitosa. Para embasar teoricamenteas metodologias propostas nas disciplinas, parte-se do design participativo até as linhascontemporâneas, que buscam a ampliação tanto dos modos de fazer design como dos seuscampos de atuação

Concepções de ensino de professores de física e química

Em Portugal , o currículo nacional das ciências para o ensino básico apresenta um foco construtivista, valorizando abordagens de ensino centradas nos alunos como resolução de problemas e investigações e enfatiza a interligação entre Ciência, Tecnologia, Sociedade e Ambiente. Apela para o uso de experiências de aprendizagem que incluem, formulação de questões, planeamento e realização de investigações, recolha de dados e argumentação com base em evidências. Contudo, as concepções de ensino dos professores influenciam o modo como as experiências educativas são implementadas. Neste estudo, descrevem-se concepções de ensino de seis professores de física e química. Assenta numa metodologia interpretativa usando, na análise de dados, o questionamento e comparação constantes. Os dados sugerem que os professores ainda não aderiram às ideias inovadoras propostas

Composition and abundance of microplastics in the marine and coastal areas in the Azores (North-Eastern Atlantic)

Tese de mestrado, Ecologia e Gestão Ambiental, 2023, Universidade de Lisboa, Faculdade de CiênciasEvery year, millions of tons of solid waste are thrown into the sea with negative implications for the environment and, consequently, for the ecosystems and species that inhabit it. Commercial maritime traffic and ocean gyres lead to a significant increase in the amount of pollution in the waters and coasts of remote oceanic islands. Most of this type of pollution is plastics items, and those that are smaller than 5 mm are considered microplastics. These particles are ubiquitous throughout the marine environment, dispersed among beaches, estuaries, on the water surface and even on the seafloor, affecting ecosystems and impairing species. The objective of this study was to estimate the abundance and dimension of microplastics along the coast of São Miguel Island, Azores, following an inshoreoffshore gradient along a stream until the ocean. Sediment samples were collected and analysed for across 8 areas covering the entire coastline of the island, each one divided among 4 connected sites, along an inland-coastal gradient, from the stream until the ocean (upstream, downstream, coastal, and submerged marine sediments), following a nested design approach. Also, apart from this first approach, 15 beaches, covering all island, were also tested and compared. In both sampling approaches (areas and beaches), the highest abundance of microplastics was 0.74 MP/g (Ribeira Quente), and the lowest 0.20 MP/g (Ribeira Praia), both in South beaches. The largest category of microplastics was fibres, followed by microbeads and fragments, and the most abundant colours were transparent, black, and blue. There was significant variability in the abundance among areas, sites and beaches, and only among sites and beaches in the dimension. Factors like granulometry, sites and pollution sources are detected as significant in microplastics abundance. This study results are important to the scientific community and particularly for local government concerning litter management and mitigation

An Electronic Dictionary of Collocations for European Portuguese: Methodology, Results and Applications

This paper discusses a lexicographic approach to collocations, presenting the methodology, options, results andapplications of an electronic Dictionary of Portuguese Collocations (DCP). The methodology underlying thedictionary involves the extraction from a corpus of contemporary Portuguese of lexical associations of pairs ofword forms, contiguous or not. The significance of the pairs is statistically measured by the Mutual Information(MI) calculus, as well as by the MI weighted by the frequency of the pair (MIF). Other issues are discussed:frequency of the word forms vs. frequency of the lemmas, the organization of the collocations in the dictionary,grammatical patterns as source of lexical information, as well as the splitting of collocations into sense-groups.info:eu-repo/semantics/publishedVersio

Analysis of the claims data of a life insurance portfolio

Mestrado em Ciências ActuariaisA graduação de mortalidade é um problema há muito estudado nas ciências atuariais, utilizando muitas abordagens diferentes. Para este estudo, vamos focar-nos em alguns exemplos específicos de graduação: a lei de Gompertz's; uma abordagem empírica em que as taxas de mortalidade são ajustadas a uma exponencial; graduação por tábua de mercado; modelos lineares generalizados; três tipos diferentes de árvores de regressão - árvores de classificação e regressão, árvores de inferência condicional e florestas aleatórias. Além disso, seguindo (Guo et al., 2002), serão propostos métodos híbridos, alguns dos quais ainda não existiam na literatura, combinando árvores de regressão e as outras técnicas. Todos estes modelos serão aplicados tanto ao conceito tradicional de taxa de mortalidade como a uma sua versão ponderada por capital seguro. De acordo com o esperado e a literatura, a mortalidade será mais baixa para apólices com capital seguro maior, o que vai de encontro à ideia de que pessoas com maior capital seguro estarão numa situação económica mais favorável e conseguirão viver mais tempo. Para este estudo, idade, género, estado civil e local de residência foram utilizados como como variáveis explicativas. Estas variáveis explicativas revelaram-se importantes quando aplicados modelos de árvores de regressão. Conclui-se que para qualquer uma das taxas de mortalidade estudadas o melhor modelo correspondeu a um modelo híbrido que combina uma árvore de regressão com a abordagem empírica aplicada às suas folhas. Como métrica de comparação foi utilizado o RMSE (raiz quadrada do erro quadrático médio).Mortality graduation is a problem that has long been studied in actuarial science using many different approaches. In this thesis, we will focus on a number of specific examples of techniques for graduation: Gompertz's law; an empirical approach where mortality rates are fit to an exponential; graduation by standard table; generalised linear models (GLM); three different types of regression trees - classification and regression trees, conditional inference trees and random forests. Furthermore, following (Guo et al., 2002), hybrid methods will be created, some of which unseen before in the literature, combining regression trees with some of the other approaches. These techniques will be applied to the traditional concept of mortality rate but also to a version of it weighted by sum assured. As expected and previously observed in literature, mortality will generally be lighter for policies with higher sum assured, which is in line with the idea that people with higher sums assured are wealthier and hence healthier, living longer. For this study, age, gender, civil status and place of residence were used as explanatory variables. These explanatory variables proved relevant when applying the tree generating algorithms. In the end, we will find that both for the traditional and the weighted mortality rates, a hybrid method (of a regression tree with the empirical approach applied to its leafs) yielded the best results for the portfolio in study. The RMSE (root mean square error) was the evaluation metric used

Application to Portugal and Macao

Air pollution is a major concern issue for most countries in the world. In Portugal and Macao, the values of nitrogen dioxide (NO2), particulate matter (PM) and ozone (O3) are frequently above the concentration thresholds accepted as “good air quality.” Portugal follows the European Union (EU) legislation (Directive 2008/50/EC) on air quality and Macao the air quality guidelines (AQG) from the WHO. Air quality forecasts are very important mitigation tools because of their ability to anticipate pollution events, and issue early warnings, allowing to take preventive measures and reduce impacts, by avoiding exposure. The work presented here refers to the statistical forecast of air pollutants for three regions: Greater Lisbon Area, Madeira Autonomous Region (both located in Portugal), and Macao Special Administrative Region (in Southern China). The presented statistical approach combines Classification and Regression Tree (CART) and multiple regression (MR) analysis to obtain optimized regression models. This consolidated methodology is now in operation for more than a decade in Portugal, and is subject to regular updates that reflect the ongoing research and the changes in the air quality monitoring network. Recently, the same methodology was applied to Macao in collaboration with the Macao Meteorological and Geophysical Bureau (SMG). Here, a statistical approach for air quality forecasting is described that has been proven to be successful, being able to forecast PM10, PM2.5, NO2, and O3 concentrations, for the next day, with a good performance. In general, all the models have shown a good agreement between the observed and forecasted concentrations (with R2 from 0.50 to 0.89), and were able to follow the concentration evolution trend. For some cases, there is a slight delay in the prediction trend. Moreover, the results obtained for pollution episodes have proven that statistical forecast can be an effective way of protecting public health.publishersversionpublishe

Virtual pedagogical model: development scenarios

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Flatout technologies internationalisation strategy

CEM