Para uma taxonomia da multimodalidade na interacção homem-computador : proposta aberta da classificação pluridimensional

Tese de doutoramento, Belas-Artes (Design de Comunicação), Universidade de Lisboa, Faculdade de Belas-Artes, 2015A Interacção Homem-Computador tem-se assumido como uma área interdisciplinar que integra contributos de diversas áreas científicas como a engenharia, a filosofia, as ciências sociais e humanas e o design. A presente investigação tem como principal objectivo o estudo e a classificação das Interacções Homem-Computador de carácter multimodal e procura contribuir para a produção de ferramentas teóricas de concepção, análise e construção de interfaces, compreendendo a forma como agentes humanos e informáticos interagem entre si. A primeira parte, integra o enquadramento conceptual e histórico sustentado pela revisão de literatura. A segunda, apresenta propostas de sistemas de classificação de modalidades de interacção, de processos interactivos e de interacções, baseados em reflexão académica e análise prévia do estado da arte, quando existente. É dada especial atenção ao paradigma de interacção natural pelo seu carácter historicamente dominante. O défice de análise académica registado no âmbito desta temática, contribuiu para o desenvolvimento de uma investigação de carácter tipológico e exploratório.Human-computer interaction has emerged as a interdisciplinary area that integrates contributions from different scientific territories such as engineering, philosophy, psychology, and design. This conveys a need for shared conceptual tools that promote interface invention, development, and analyses. This study aims to develop a pluridimensional classification system that encompasses the maximum diversity through the consideration of the multiple classification systems that have been put forward in the analyses of multimodality in human-computer interaction. The present investigation intends to contribute with a deeper understanding on the manners that interactions develop and/or may develop between human and computer agents. The investigation comprises two parts. The first, reviews conceptual and historic back- ground supported by literature. The second, pursuits investigation goals supporting it self on the different classification dimensions portrayed in academic classification systems on the analyses of multimodality in human-computer interaction. This leads to interaction modalities, interactive processes, and interactions classification systems presentation. The natural interaction paradigm receives special attention given its dominant and historical status. The absence of relevant academic analyses in some of the main classifications dimensions promotes a typological and exploratory approach

A study about PCM’s incorporation in passive solar systems

The energy consumption is a major contributor to the absorption of the economic resources of families and countries. One way to reduce the consumption is by increasing energy efficiency, which can be archived with the use of new building materials, such as Phase Change Materials (PCM’s). The following work, consist in a study to evaluate the behaviour of thermo-active material (PCM), when used in an energy efficiency perspective. It is intended to demonstrate the advantages and disadvantages in the introduction of this material into the mortar of a “trombe wall” and into water tanks (water heaters), with the expectation of improving thermal comfort and reduce consumption in residential buildings. This work adopts the experimental approach, with the creation of physical models at reduced scale that simulated the thermal performance of building elements under study. In this experimental study, the best way to record the thermal behavior of these models based on the application of thermal loads was studied, either by artificial via either through atmospheric exposure.The phase change materials adopted in the study are the result of another research conducted in the Superior School of Technology and Management (ESTIG), the Polytechnic Institute of Bragança (IPB), which are the “Octadecano” and “Parafina”. The behaviour differs in the melting point, so it can be applied in different situations. With this work we conclude that the incorporation of PCM's in mortars and applied to the building system trombe wall, can bring benefits in terms of thermal comfort, improved efficiency and sustainability in buildings. As for the water heaters reservoir, it is apparent that the application of PCM Parafina, the way it was applied in this work, didn’t show advantages in energy level.info:eu-repo/semantics/publishedVersio

Passive solar system applied in trombe walls

Publicado em "Proceedings of the 7 th International Conference on Safety and Durability of Structures: ICOSADOS 2016"A phase-change material (PCM) is a substance with a high heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Heat is absorbed or released when the material changes from solid to liquid and vice versa; thus, PCMs are classified as latent heat storage (LHS) units. The work presented in this paper is related to the study of a passive solar system applied in facades with Trombe wall. In particular it was evaluated the effect of the incorporation of phase changing materials (PCM's) was assessed using namely PCM based on paraffin and another one based on octadecane. For this purpose, firstly an experimental campaign conducted at Bragança Polytechnic Institute was performed in order to evaluate the blending mode of all the constituents of the mortar, the content of PCM to incorporate in the mortar as well as the involved water quantity, including mechanical characterization of the mortar with and without PCM. The second part was devoted to the study of tests models using cement mortar and an appropriate geometry, by exposure to atmospheric thermal action. With data acquisition equipment it was possible to obtain temperature records and thermal conductivity of the main facade elements in 10 to 10 minutes intervals and so it was possible to establish a comparison between the tested models. Main conclusions of this work are that the incorporation of PCM's into thermal mortars can bring benefits in terms of thermal comfort, greater efficiency and sustainability to buildings, as well as improve the efficiency of Trombe wall building system

Introdução

UID/ELT/00657/2019 SFRH/ BPD/100810/2014publishersversionpublishe

Sem Ordem Nem Desordem

UID/ELT/00657/2019 SFRH/ BPD/100810/2014publishersversionpublishe

Introdução

UID/ELT/00657/2019 SFRH/ BPD/100810/2014publishersversionpublishe

Semantic annotation of biological concepts interplaying microbial cellular responses

<p>Abstract</p> <p>Background</p> <p>Automated extraction systems have become a time saving necessity in Systems Biology. Considerable human effort is needed to model, analyse and simulate biological networks. Thus, one of the challenges posed to Biomedical Text Mining tools is that of learning to recognise a wide variety of biological concepts with different functional roles to assist in these processes.</p> <p>Results</p> <p>Here, we present a novel corpus concerning the integrated cellular responses to nutrient starvation in the model-organism <it>Escherichia coli</it>. Our corpus is a unique resource in that it annotates biomedical concepts that play a functional role in expression, regulation and metabolism. Namely, it includes annotations for genetic information carriers (genes and DNA, RNA molecules), proteins (transcription factors, enzymes and transporters), small metabolites, physiological states and laboratory techniques. The corpus consists of 130 full-text papers with a total of 59043 annotations for 3649 different biomedical concepts; the two dominant classes are <it>genes </it>(highest number of unique concepts) and <it>compounds </it>(most frequently annotated concepts), whereas other important cellular concepts such as <it>proteins </it>account for no more than 10% of the annotated concepts.</p> <p>Conclusions</p> <p>To the best of our knowledge, a corpus that details such a wide range of biological concepts has never been presented to the text mining community. The inter-annotator agreement statistics provide evidence of the importance of a consolidated background when dealing with such complex descriptions, the ambiguities naturally arising from the terminology and their impact for modelling purposes.</p> <p>Availability is granted for the full-text corpora of 130 freely accessible documents, the annotation scheme and the annotation guidelines. Also, we include a corpus of 340 abstracts.</p

Manuel António Pina: dos olhos e das matérias

info:eu-repo/semantics/publishedVersio

School Meals and Food Poverty: Children’s Views, Parents’ Perspectives and the Role of School

This paper addresses the importance of school meals in balancing food budgets and diets among 45 lowincome families in Portugal. Drawing on interviews with both parents and children (aged 11–15 years) we found that children’s views on the quality of school meals affect their willingness to eat at school and heighten parental concerns with health, food and resources. For parents, school meals are crucial to ensure children’s dietary variety and balancing tight food budgets. Schools’ role in food poverty alleviation is also critically addressed, contributing to current and future sociological studies of children, school meals and food poverty.info:eu-repo/semantics/publishedVersio

Metodologias de acesso à função do Sistema Nervoso Autónomo

Introdução: A avaliação da função do Sistema Nervoso Autónomo (SNA) é hoje utilizada em vários contextos clínicos na caraterização e diagnóstico de disautonomias. Esta avaliação compreende as funções sudomotora, cardiovagal e adrenérgica. Os testes para avaliação do SNA podem classificar-se em testes indiretos e testes diretos. Relativamente aos testes indiretos, estes têm a desvantagem de fornecer informação apenas da função do órgão-alvo, obtendo-se desta forma uma caraterização do tipo indutivo relativamente aos mecanismos internos de origem autonómica que o regulam. Estes testes recorrem à avaliação de catecolaminas séricas, ao teste de suor, e à avaliação da Variabilidade da Frequência Cardíaca (VFC). Relativamente aos testes com avaliação direta da atividade autonómica, em particular da sua componente simpática, a microneurografia é uma técnica de registo direto num nervo periférico, sendo, portanto invasiva, mas que permite quantificar diretamente, por unidade de tempo, os potenciais de ação que resultam da ativação simpática. Objetivos: Sistematização das metodologias de avaliação do SNA para se obter um indicador referente ao balanço vago-simpático (BVS). Material e Métodos: No sentido de se sistematizarem as metodologias de avaliação do SNA são apresentados exemplos de testes onde se aplica a metodologia de acesso direto através da análise da Variabilidade da Frequência Cardíaca (VFC) através do registo de ECG, análise no domínio do tempo, da frequência, tempo-frequência e teoria do caos. Relativamente aos métodos indiretos é apresentado um exemplo de microneurografia bem como as métricas de avaliação da atividade simpática por unidade de tempo e por bloco de batimentos cardíacos. Resultados: A metodologia apresentada permite obter de forma sistemática a classificação dos vários métodos de avaliação do SNA através da ilustração de exemplos reais obtidos em contexto clínico. Os exemplos apresentados permitem dar a conhecer o potencial das técnicas de acesso ao BVS, em particular através do processamento e integração dos dados obtidos durante a avaliação. Conclusões: Os resultados permitem afirmar o potencial que a quantificação da atividade do SNA tem no contexto de avaliação de disautonomias