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- Efeitos de um programa de educação nos conhecimentos e na autopercepção dos educadores escolares na preparação para cuidar de crianças diabéticas tipo 1Publication . Dixe, Maria dos Anjos; Gordo, Clementina Maria Gomes de Oliveira; Catarino, Helena; Kraus, Teresa; Menino, EvaAvaliar a formação acadêmica e profissional dos educadores escolares; avaliar o impacto do Diabetes + Apoio dado pelo Programa Responsáveis Escolares pelas Crianças com Diabetes Tipo 1 no nível de conhecimento e de confiança dos educadores escolares, para apoiar os alunos com diabetes tipo 1; comparar o nível de conhecimento dos educadores escolares com suas variáveis acadêmicas e profissionais.
- What are the practices of caregivers to prevent falls among institutionalized elders?Publication . Baixinho, Cristina Lavareda; Dixe, Maria dos AnjosTo describe the practices of caregivers in managing the risk of falls of institutionalized elders, relating these practices with age, education, and the time the caregivers have been exercising this profession.
- Redesigning English for Tourism Purposes (ETP) subjects during the period of emergency remote teaching: challenges and opportunitiesPublication . Pires, Ana; Cardoso, PaulaThe six undergraduate degrees offered by the School of Tourism and Maritime Technology in the scientific area of Tourism (Tourism, Tourism and Hotel Management, Marketing for Tourism, Restaurant and Catering Management, Tourism and Recreation and Event Management) have English subjects as part of their curricula. Designed under an ESP (English for Specific Purposes) framework, which privileges the needs of the learners, these subjects focus mainly on work contexts and interactions, providing practical language skills for tourism professionals. Given that contents, methodologies, and assessment are designed and planned to consider the type of language and discourse related to what the learners will need in their jobs, these subjects fall under the category of English for Tourism Purposes (ETP). Following the lockdown in March 2020, adjustments to online teaching and learning were implemented in those subjects in terms of teaching and learning methodologies, as well as in terms of assessment activities. Even though the teaching and learning contexts changed significantly, the aim of preparing students to perform specific job-related functions remained as one of the main concerns. Moving classes online was a challenging endeavor, but also created the opportunity to prepare students for their future participation in work-related online tasks. In this paper the authors describe the main adjustments made to ETP subjects and reflect on the challenges and opportunities created by the context of emergency remote teaching.
- O processo de Amostragem em Auditoria e a sua aplicação pelos auditores financeirosPublication . Rocha, Marlene; Eugénio, Teresa; Almeida, BrunoOs escândalos e as crises financeiras que têm afetado a economia mundial levam-nos a repensar o papel do auditor e como promover a qualidade do seu trabalho. Trazer para o debate as várias técnicas possíveis associadas a um trabalho de qualidade, como é a amostragem, torna-se fundamental. O objetivo deste trabalho é aferir sobre a utilização de técnicas de amostragem pelos Revisores Oficiais de Contas em Portugal. Esta pesquisa pretende responder a questões acerca da extensão da utilização de técnicas de amostragem (estatística e não estatística) pelos auditores financeiros e quais os softwares a que recorrem para aplicar essas técnicas; quando são utilizadas técnicas estatísticas; o tipo de amostragem utilizada por áreas da contabilidade; os critérios mais utilizados para calcular o tamanho da amostra; a participação em ações de formação na área da amostragem e a opinião dos auditores sobre esta matéria. Para obter os resultados foi realizado um questionário aos Revisores Ociais de Contas que trabalham na área da auditoria financeira em Portugal. As conclusões permitiram armar que os auditores financeiros valorizam a utilização de técnicas de amostragem, tendo a noção que estas podem contribuir para o aumento da qualidade do seu trabalho. Recorrem quer à amostragem estatística quer à amostragem não estatística aplicada aos testes aos controlos e aos testes substantivos. No entanto, dada a complexidade de algumas técnicas verifica-se que os auditores têm algumas lacunas nesta matéria, em particular quando se trata de abordagens estatísticas complexas.
- Complexity Estimation for Load Balancing of 360-Degree Intra Versatile Video CodingPublication . Filipe, Jose N.; Monteiro Carreira, João Filipe; Tavora, Luis M. N.; Faria, Sergio; Navarro, Antonio; Assuncao, Pedro A. A.The ever increasing demand for image and video content poses new requirements to support higher resolutions and richer representation formats, creating new challenges in coding algorithms. The forthcoming Versatile Video Coding (VVC) standard aims to increase the coding efficiency of existing algorithms and it is particularly suitable for Ultra-High Definition (UHD) resolutions and 360° video. However, since coding efficiency gains are obtained at the cost of increased complexity, fast computational approaches are needed to cope with realtime requirements, such as parallel processing. Thus, this work presents a contribution towards efficient parallel encoding of 360° video, based on coding complexity estimation and nonuniform data-level splitting (slice-based) for load balancing across multiple processors. A machine learning approach is proposed to estimate the complexity of intra coding VVC, using uncorrelated features, obtained through Principal Component Analysis (PCA) and Extremely Randomised Trees (ERT). Then, a complexity-balanced slice partition is devised, taking advantage of the clustered complexity inherent to Equirectangular Projection (ERP). It is shown that coding complexity is estimated with an accuracy of 92.25%, and the encoding time is reduced by 8.50%, when compared to the case where the 360° frames are evenly split.
- Robust Depth Estimation From Multi-Focus Plenoptic ImagesPublication . Cunha, Francisco; Thomaz, Lucas; Tavora, Luis M. N.; Assunção, Pedro A. A.; Fonseca-Pinto, Rui; Faria, Sérgio M. M.This paper describes a robust depth estimation algorithm for multi-focus plenoptic images. The main feature of the proposed method consists of a hybrid template matching scheme built-upon intensity and local phase information, which adapts to the blurriness of neighbouring lenslet microimages. By reducing the impact of defocusblur on the template matching accuracy, the proposed method efficiently handles the varying triangulation baseline over the depth-of-field, thus discarding the need for scene-related information such as the expected range of disparities. Experimental results demonstrate the robustness of the proposed method over the most used commercially available depth estimation algorithm, achieving a reduction of 73% on the depth estimation error.
- Evaluation of an educational project for the development of the autonomy of life in young people leaving residential carePublication . Santos, Rui; Margarido, Cristóvão; Pocinho, Ricardo; Silva, Tânia; Póvoa, VanessaOne of the protection measures provided to at-risk children and young people in Portugal is residential care. Residential care facilities foster children and young people from unstructured families, providing them with conditions that may allow to enhance their full development, including their education, well-being and preparation for life autonomy. Projet' Ar-te is an intervention project developed at Casa do Canto, under the direction of the Portuguese Association for the Rights of Minors and the Family - CrescerSer, financed from 2012 to 2015 through the "Children and Youth at Risk"Program of Fundação Calouste Gulbenkian. The main objectives of this project were the creation of the Life Skills Development Program (PDCV) and the Support and Monitoring Structure (ESAAC) for the young people leaving residential care, in order to provide them with a close affective rear, helping to face the challenges and difficulties they encounter successively outside the residential care facility. Through ethnobiographic interviews with two young women experiencing the project for one year, the aim was to understand their perceptions regarding two moments: the residential care period and the experiences after leaving Casa do Canto through the support provided by the ESAAC Structure. The results showed that participation in the project activities provided significant moments during residential care, which seem to have an important impact on the autonomy strategies adopted by young women after leaving the facility.
- Scalable Coding of 360-degree Video for Streaming Adaptation at 5G Network EdgesPublication . Carreira, J.; Faria, Sergio M. M. de; Tavora, Luis M. N.; Navarro, Antonio; Assuncao, Pedro A. A.The huge amount of data that is necessary to capture the full field-of-view (FoV) in omnidirectional video, i.e., 360°, imposes the use of highly efficient compressed formats as well as adaptive broadcast and streaming mechanisms, such as those foreseen for 5G networks. To cope with the demanding requirements of 360° video streaming over 5G networks, this work proposes a scalable 360° video coding architecture, by enabling adaptation through the Multi-Access Edge Computing (MEC) server in two different domains of the spherical visual content, namely spatial resolution and FoV. In the proposed architecture two-layers are encoded from the input 360° video content: (i) the base-layer (BL), encoding each 360° image as a whole, at a lower spatial resolution; (ii) the enhancement-layer (EL) encoding each spherical image as a set of multiple FoVs with higher spatial resolution. Such arrangement enables flexible stream adaptation for the smart decision algorithms to be implemented at the MEC server, enabling significant reduction of the overall bit rate through the radio interface. The simulation results show that the proposed scalable coding scheme allows a great deal of bit rate savings across the 5G network, achieving 36% of bit rate saving, on average, for a 90° FoV in comparison with conventional single-layer coding.
- PrefacePublication . Moreira, António Carrizo; Dantas, José Guilherme LeitãoEntrepreneurship is far from being a novel concept. To find its roots we have to go back to the 18th century and to the original authors of the concept, namely Richard Cantillon and Jean-Baptiste Say. Nevertheless, despite the multiple authors who have successively addressed this issue over the many decades, entrepreneurship only earned “citizenship rights” in the economy from the 1970s/80s onwards, given the evidence that SMEs were critical regarding wealth and jobs creation, the reduction of regional asymmetries, and being more effective than larger firms in terms of innovation (particularly in the early stages of the innovation process).
- Versatile Video Coding Of 360° Video Using Adaptive Resolution ChangePublication . Carreira, J.; Faria, Sergio M. M. de; Tavora, Luis M. N.; Navarro, Antonio; Assuncao, Pedro A. A.Encoding 360° video with ultra high spatial resolution requires high bitrates to guarantee acceptable QoE in video delivery services. However, since in general the full Field-of-View (FoV), i.e., 360°, is not required at once, a great deal of bandwidth can be saved if only a limited FoV is delivered, according to content relevancy or/and user demand. This work addresses this problem using the concept of Adaptive Resolution Change (ARC) defined in the forthcoming Versatile Video Coding (VVC) standard, by dynamically mapping the full FoV into multiple video frames with different spatial resolutions. Those FoVs attracting more visual attention are encoded with higher resolution while the others are encoded with lower resolution, thus without compromising the visual quality and resolution of the most relevant regions. The simulation results show that the proposed adaptive coding scheme is able to deliver high quality video for the most relevant FoV at any time instant, achieving a maximum bitrate reduction of 37.2%.