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Browsing by Issue Date, starting with "2020-04"

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  • A complementaridade de pais e de profissionais na avaliação em Intervenção Precoce
    Publication . Pereira, Ana Paula Da Silva; Jurdi, Andréa Perosa Saigh; Reis, Helena I. S.
    O estudo teve por objetivo analisar a convergência entre pais e profissionais relativamente à avaliação da área da interação social em crianças com Transtorno do Espectro Autista (TEA), entre três e seis anos, apoiadas pelo sistema de intervenção precoce em Portugal.
    2020-04Journal article Open access Show more
  • Designing a mobile app to promote healthy behaviors and prevent obesity: analysis of adolescents’ preferences
    Publication . Frontini, R.; Sousa, P.; Dixe, M. A.; Ferreira, R.; Figueiredo, M. C.
    To ensure that adolescents adhere to programmes promoting healthy behaviors, these programmes must be appealing and interesting. This study aims to characterize and assess the devices, operating system and type of mobile apps frequently used by adolescents; understand the features that mHealth apps should have to be appealing; comprehend the facilitators and barriers for adolescents to use mHealth apps. The sample comprised 165 adolescents (12–18 years) from the main population, recruited in 2018. Most participants used smartphones and the Android system. Food and physical activity suggestions were considered the most important features for an mHealth app. 62.6% had never tried an mHealth app. For those who had tried one, 26.0% stated it was to improve health status/lifestyle. Their favorite feature was physical exercise tips/plans (41.8%). Adolescents pointed out that the reasons that made them keep using the app were utility and interest (35.7%). Regarding possible barriers, 48.4% reported a lack of a senseof need/practical utility, and 18.8% considered notifications as their least favorite feature. Lack of interest was pointed out for 38.2% as the main reason for stopping use. Results provide practical information for the planning, design, and implementation of future mHealth apps for the promotion of healthy behaviors–an important implication for future research in this area.
    2020-04Journal article Restricted access Show more
  • Monocular Camera Calibration for Autonomous Driving — a comparative study
    Publication . Martins, Pedro Filipe; Costelha, Hugo; Bento, Luís Conde; Neves, Carlos
    Autonomous driving is currently a widely researched topic worldwide. With a large research effort being taken by industrial research units in the automotive sector, it is no longer exclusive to academic research labs. Essential to this ongoing effort towards level-5 vehicle autonomy, are the sensors used for tracking and detection, mainly lasers, radars and cameras. Most of the cameras for automotive application systems use wide-angle or fish-eye lens, which present high distortion levels. Cameras need to be calibrated for correct perception, particularly for capturing geometry features, or for distance-based calculations. This paper describes a case-study concerning monocular camera calibration for a small scale autonomous driving vehicle vision system. It describes the fundamentals on camera calibration and implementation, with results given for different lenses and distortion models. The aim of the paper is not only to provide a detailed and comprehensive review on the application of these calibration methods, but to serve also as a reference document for other researchers and developers starting to use monocular vision in their robotic applications.
    2020-04-15Journal article Restricted access Show more
  • Energy efficiency assessment of a public building resourcing a BIM model
    Publication . Rodrigues, Fernanda; Isayeva, Anastasiya; Rodrigues, Hugo; Pinto, Armando
    The construction sector high energy consumption and GHG emissions lead to the development of easier methodologies to achieve low carbon buildings. Currently, the use of Building Information Modeling (BIM) is growing in the Architecture, Engineering, Construction and Operation (AECO) sector, and it assumes relevance in buildings energy simulation. Therefore, this work aims to explore the potential and limitations of applying BIM to energy management and simulation in the operation life cycle phase of a service building, and comparing it with a specific and customized tool for energy efficiency assessment of public buildings. A service building BIM model was developed in Autodesk Revit showing its utility when used as an asset for storing and organize energy-related data. The add-in Energy Analysis for Autodesk Revit allowed automatically generating the Building Energy Model (BEM) from the BIM model and performing a cloud-based simulation in Autodesk Green Building Studio (GBS). The energy consumption results obtained in GBS were compared with the results obtained with the energy simulation tool ECO.AP developed in the Portuguese National Laboratory of Civil Engineering (LNEC). It was possible to infer that the input limitations of GBS, mainly in HVAC systems customization, compromise the representation and energy performance evaluation of the building under actual operating conditions, making GBS more adequate for early buildings life cycle stages where energy simulation results may support decisions that aim to improve the buildings energy performance during the operation phase.
    2020-04-25Journal article Restricted access Show more
  • Os efeitos da Inteligência Emocional do Gestor de Projeto no Sucesso do Projeto
    Publication . Guimarães, Amanda; Carvalho, Henrique Amado; Espírito Santo, Pedro Manuel do
    A fim de alcançar o sucesso do projeto, a gestão de projetos exige dos líderes, além das suas competências técnicas, a capacidade de adaptação e competências para lidar com pessoas. Num ambiente de trabalho, as relações interpessoais da equipa influenciam o modo como o trabalho é realizado e as decisões são tomadas. Neste sentido, o uso da inteligência emocional é importante para ter consciência e gerir suas próprias emoções e a dos membros da equipa, melhorando a colaboração entre os membros da equipa e a coesão entre eles, e assim aumenta a possibilidade de sucesso no projeto. Esta investigação tem como objetivo o estudo dos efeitos da inteligência emocional do gestor no sucesso obtido nos projetos por si geridos. Para isso, foi construído um modelo de investigação, através da literatura revista que procurou analisar os efeitos da inteligência emocional na colaboração entre os membros da equipa, na coesão da equipa e no sucesso do projeto. Assim, através de uma amostra de 86 gestores de projetos brasileiros e portugueses, os dados recolhidos foram analisados pelo método de modelagem de equações estruturais pelos mínimos quadrados parciais (PLS-SEM). Dos resultados, conclui-se que a consciência das próprias emoções e a consciência das emoções dos outros membros da equipa, influenciam na gestão das próprias emoções e na gestão das emoções dos outros. Além disso, a gestão das emoções dos membros da equipa tem efeito positivo no sucesso do projeto. Os resultados evidenciam também que a coesão contribui para a colaboração entre os membros da equipa e influencia o sucesso do projeto. Deste modo, as organizações devem ter em atenção a importância da inteligência emocional dos seus gestores de projeto pelo que é relevante que os gestores desenvolvam essa competência.
    2020-04-30Master thesis Open access Show more