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- TREINAR O PROCESSO DE DECISÃO EM SAÚDE USANDO SERIOUS GAMESPublication . Rosa, Marlene
- Cidadania da União: fator de união e de exclusãoPublication . Monteiro, Susana SardinhaA "constitucionalização" da cidadania da União pelo Tratado da União Europeia (TUE), em 1992, representou uma mudança no centro da gravidade de certos direitos de carácter público do homem europeu, e não já do homo economicus, do operador económico, elevando-o assim, ao status de um verdadeiro cidadão europeu.
- A reflection on explanatory factors for COVID -19: A comparative study between countriesPublication . Santos, E.; Oliveira, M. F.; Ratten, V.; Tavares, F.; Tavares, V.The COVID-19 pandemic is the biggest problem facing the world nowadays. Each country in the world has its own characteristics, which means that its governments, at different rhythms, adopt identical measures to combat this new virus. This article aims to perform a comparative study between countries with a population similar to the Portuguese in number of inhabitants and to find out which factors may explain the numbers registered with the COVID-19 pandemic. The results show that the countries that carried out more population tests have higher values in tourism, secu rity, innovation, competitiveness, and GDP per capita indicators. There is a significant and positive relationship between temperature and the daily cases of COVID-19 infections. The results found contribute to a greater knowledge of the behavior of this disease according to the characteristics of each country, making it useful for international business managers to compare and contrast different country environ mental conditions in order to define alternative strategies to overcome this great period of disturbance more quickly.
- Light field image coding with flexible viewpoint scalability and random accessPublication . Monteiro, Ricardo J. S.; Rodrigues, Nuno M. M.; Faria, Sérgio M. M.; Nunes, Paulo J. L.This paper proposes a novel light field image compression approach with viewpoint scalability and random access functionalities. Although current state-of-the-art image coding algorithms for light fields already achieve high compression ratios, there is a lack of support for such functionalities, which are important for ensuring compatibility with different displays/capturing devices, enhanced user interaction and low decoding delay. The proposed solution enables various encoding profiles with different flexible viewpoint scalability and random access capabilities, depending on the application scenario. When compared to other state-of-the-art methods, the proposed approach consistently presents higher bitrate savings (44% on average), namely when compared to pseudo-video sequence coding approach based on HEVC. Moreover, the proposed scalable codec also outperforms MuLE and WaSP verification models, achieving average bitrate saving gains of 37% and 47%, respectively. The various flexible encoding profiles proposed add fine control to the image prediction dependencies, which allow to exploit the tradeoff between coding efficiency and the viewpoint random access, consequently, decreasing the maximum random access penalties that range from 0.60 to 0.15, for lenslet and HDCA light fields.
- An interactive Web-GIS fluvial flood forecast and alert system in operation in PortugalPublication . Mourato, Sandra; Fernandez, Paulo; Marques, Fábio; Rocha, Alfredo; Pereira, LuísaFloods are one of the natural disasters not preventable, affecting people and causing significant damage to economic activities and infrastructures. Thus, it is of foremost importance to, within a disaster risk-reduction strategy, develop a useful flood forecast and alert system to prevent people from suffering flood disasters and mitigate its consequences. This article presents the Flood Forecast and Alert System in operational mode since 2019 for the Águeda river basin located in Portugal's centre region. This system is technologically advanced, differing from others since it uses a coupled real-time hydrologic and 2D hydrodynamic modelling supported on numerical weather prediction and a high-resolution digital terrain surface model. The system components are automatically activated and linked: i) a rainfall forecasting model (WRF), ii) a hydrological model (HEC-HMS), iii) a hydraulic model (HEC-RAS 2D), and a iv) Web-GIS platform. The hydrological model is forced with forecast precipitation for the next three days and updated every 6 h, which is crucial to generate pre-flood hazard maps. It also includes a Web GIS service for flood hazard dissemination available for civil authorities and citizens. A flood forecast and alert system is highly relevant to the community since, by enhancing knowledge, it provides the authorities responsible for assessing and managing the flood risk, responsiveness to disasters and timely decision-making, which is even more evident in the context of climate change.
- Distribution of the number of losses in busy-periods of oscillating Mx/G/1/(n,a,b) systemsPublication . Ferreira, Fátima; Pacheco, António; Ribeiro, HelenaWe analyze customer losses in busy-periods of preemptive and non-preemptive oscillating MX/G/1/(n,a,b) systems. Specifically, we propose a recursive scheme to compute the probability function of the number of customer losses in busy-periods of such systems. The effectiveness and usefulness of the proposed method is illustrated through the presentation of numerical examples that consider different arrival rates and service time and group size distributions.
- Cut-off for the legal ages in the Portuguese Population by Third Maturity Index: Measures of AccuracyPublication . Pereira, Cristiana Palmela; Rodrigues, Ana; Santos, Adriana; Salvado, Francisco; Santos, Rui; Cameriere, RobertoObjectives: The aim of this study is to estimate the cut-off points for the Portuguese legal ages through the I3M, and to compare them with the methods of Demirjian, Nolla and Moorrees. Design: The lower third molars were analyzed on 348 orthopantomography's aged between 12 and 23 years in a Portuguese Population. The images were analyzed by ImageJ and the cut-off points were calculated for the respective legal ages of 14, 16, 18 and 21 years old. Results: The correlation between age and the I3M was 0.862, whereas with Demirjian's stadiums, Nolla's stages, and Moorrees’ stages the correlation coefficients were 0.863, 0.842 and 0.844, respectively. For the cut-off point of 0.08 for the age of 18, a sensitivity of 78.99 %, specificity of 93.48 %, an accuracy of 88.54 %, a positive predictive value of 86.24 % and a posteriori Bayes probability of 92.82 %. The cut-off points established for the ages of 14, 16, 18 and 21 years for the Portuguese population achieved an accuracy of 83.67 %, 85.67 %, 88.54 % and 87.11 %, respectively. Conclusion: Demirjian's method and Cameriere's method attain quite similar results. In certain ages, the methods of Nolla and Moorrees show higher sensitivity or higher specificity when compared to Cameriere's method, however this last method is more stable in terms of reliability and more suitable to use in the Portuguese population.
- The influence of financial management and governance in the provision of social services in non-profit organizationsPublication . Oliveira, Márcio; Sousa, Marlene; Silva, Rui; Santos, Tânia Cristina Simões de Matos dosThe financial crises and the pandemic COVID 19 have reinforce the importance of the nonprofit organizations (NPOs) in promoting the social welfare. These institutions face nowadays various challenges related to the new needs required by the populations, and also the deepening of the traditional social problems. In this context, fulfill their social mission implies that NPOs have to take care with their performance and simultaneously maximize the social value generated. The review of the literature allowed to identify factors associated with financial management and governance that may contribute to the definition of the social services offered by NPOs. Thus, in a studied applied to Holy Houses of Mercy in Portugal, this investigation intends to understand the influence of the financial management and the governance on the NPO social services provided. The results obtained show a positive contribution of the finances and the governance on the social services of these institutions, which lead us to conclude that to be more effective in the social services provision, NPOs must emphasize their financial management and governance practices.
- Performance of human resources in nonprofit organizations – What really counts?Publication . Oliveira, Márcio; Sousa, Marlene; Silva, Rui; Santos, Tânia Cristina Simões de Matos dosHuman resources are seen as an important asset for general associations, particularly for non-profit organizations. In the literature, it is possible to ascertain a set of factors influencing the performance of these resources, in general, in an organizational context. However, given the specificity of their missions, realizing that large management areas in this type of institutions influence their performance would significantly contribute. In practice, it was possible to implement assertive strategies to promote the performance of these employees. Thus, for the present study, and using a quantitative methodology, we started by analysing strategic management, financial management, governance and management of social services promoted by the Holy Houses of Mercy in Portugal. It was possible to ascertain that, among these areas, only financial management does not influence the performance of human resources in this type of institution. Recognizing the importance of the remaining areas, it was possible to present a set of indicators grouped into subdimensions, revealing important contributions to theory and practice. It was possible to conclude that, in a context of significant economic and social instability, such as the one we are currently experiencing, NPOs that seek to improve their level of human resource management should pay special attention to aspects related to strategy, governance and management of the social services they promote, as this is where the key factors for this performance improvement are found.