Instituto Politécnico de Viseu

Scientific Repository

Welcome to the Polytechnic Institute of Viseu Institutional Repository

The aim of this Repository is to give greater visibility to the scientific production of the academic community of the Polytechnic Institute of Viseu, by increasing the impact and use through Open Access, ensuring the storage and preservation of all research produced in its organic units and research centres.

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Recent Submissions

The Bologna reform: national study on the perception and opinion of Portuguese higher education teachers

Publication . Gouveia Antunes, Sandra Maria; Guedes, Anabela; FERREIRA LOUSADO, JOSÉ PAULO; Marques dos Santos, Paula Alexandra

This study aims to find out the perception of Portuguese higher education teachers about the adaptation processes adopted by national institutions to meet the challenges posed by the Bologna Reform and their opinion on the effects generated by the reforms undertaken. From a theoretical point of view, we made use of neo-institutionalism and the theory of practical action which emphasizes a cognitive perspective of professional action from an affective and evaluative perspective, considering the influence of normative schemes and pre-conscious processes that are transformed into routine behavior, internalized, and rebound into practical action. The methodological design ensured the representativeness of the higher education subsystems in the sample set, and the quota sample comprised 381 Portuguese higher education teachers. To gather data, a questionnaire survey was sent to all higher education institutions and various national bodies, using Google technology. The data analysis and the statistical treatment of the data collected were possible due to IBM SPSS Statistics software, version 21.0, using descriptive and inferential statistics. Results suggest the objectives aimed at with the Bologna Reform were only partially achieved, especially those referring to the development of students' professional and research skills, linked to the degree structure and the Bologna curricular reform, which were evaluated by a not insignificant number of teachers as not being achieved. The comparison of the results according to the sub-systems to which the teachers belong has made it possible to find out that, despite the low explanatory power that the type of education sub-system has on the differences registered in the perceptions built by their teachers around the Bologna Reform, there are statistically relevant differences between the perceptions of the various groups of teachers which suggest that teachers from private sector institutions felt more impact and more change because of the Reform than teachers from public higher education institutions. The results showed that within the private higher education sector, the teachers from the polytechnic institutions were the ones who presented the "strongest" perceptions regarding the scope registered by implementing the various Bologna dimensions, their implementation in the teaching-learning processes and regarding the globally perceived implementation of the Reform.

2022-07-06Conference paper

Open access

Mental health challenges in professional musicians: A systematic review of stress, anxiety, and depression

Publication . Cardoso, Mário; Leonido, Levi; Pereira, Antonino; Morgado, Elsa

Mental health challenges among professional musicians have gained attention due to the unique stressors associated with their careers. This review provides a comprehensive overview of these challenges and identifies potential areas for further research and intervention. A systematic search was conducted across multiple databases, including PubMed, Scopus, and Web of Science, using keywords such as "mental health," "musicians," "professional musicians," "stress," "anxiety," "depression," and "psychological well-being." The findings highlight the multifaceted nature of Music Performance Anxiety (MPA), influenced by psychological, physiological, and environmental factors. Interventions such as Cognitive Behavioral Therapy (CBT), biofeedback, and structured programs like ConfiDance show promise in reducing MPA and enhancing performance. However, additional research is needed to develop interventions tailored to musicians of different skill levels and genres. Further studies should also explore personality traits, performance settings, and long-term coping mechanisms for comprehensive support. The review underscores the significant mental health challenges musicians face, including high levels of stress, anxiety, and depression. The demanding nature of their profession—marked by performance pressure, irregular schedules, financial instability, and social isolation—contributes to these issues, potentially affecting creativity and career longevity. Addressing these challenges through targeted interventions is crucial for supporting musicians' mental well-being.

2025-04-10Research article

Open access

Lignocellulosic Byproducts as Bio-Adsorbents for Lead Removal

Publication . Macena, Morgana; Pereira Helena; Grosche, Lucas; Esteves, Bruno; Santos-Vieira, Isabel; Gonçalves Oliveira Valente da Cruz-Lopes, Luísa Paula

Water pollution by toxic metals, especially by lead ions, is a serious environmental concern due to these metals’ persistence, bioaccumulation, and toxicity. Aiming to reduce metal concentrations to non-toxic levels, this study analyzed the removal of lead from water through adsorption with bio-adsorbents. The adsorbent potential of the following four lignocellulosic byproducts were tested: walnut and chestnut shells, pine wood, and burnt pine wood. Removal rates of 97–99% were achieved at optimized conditions, i.e., at a pH of approximately 7, adsorbent dose of 4 g L−1, and 12 h of reaction. The BET specific surface area was between 1.74 and 4.85 m2 g−1. The pore size of the wood bio-adsorbent was 26.54 nm, and those of the remaining materials were between 5.40 and 7.33 nm. With R2 = 0.998–1.000, the kinetics fit the pseudo-second-order model better, suggesting that chemisorption is the dominant mechanism. Both Langmuir and Freundlich isothermal models fit the data well, with R2 = 0.946–0.999. It can be concluded that all the bio-adsorbents tested have the potential to efficiently remove lead ions from water.

2025-05-16Research article

Open access

The Importance of Diagnosing Before Planning

Publication . Marques dos Santos, Paula Alexandra; Guedes, Anabela

Any organisation wants to achieve success and, to do so, it needs to follow a set of steps to maximise that goal. Although non-profit organisations do not pursue profit as their central objective, they must be sustainable in the medium and long term and therefore need to apply all the tools available to guarantee this. The main aim of this chapter is to propose a diagnosis survey to help the gathering/systematisation of all the needed information regarding internal environment in non-profit organisations. After a brief theoretical conceptualisation, some tools to support the external environment analysis – general and task environment – will be presented and explained. As we also need a tool that helps internal organisation's analysis, it will be presented our innovative diagnosis survey proposal. Finally, we also aim to analyse and explain two different tools to summarize external and internal environment analyses - the SWOT analysis and the problem tree.

2025Book part

Restricted access

Intergração de BIM no datalhamento de ligações metálicas: uma abordagem com Tekla Structural Designer e IDEA Statica

Publication . Gartner, Gabriel Vinicius; Rouxinol, Gilberto Antunes Ferreira; Milani, Cleovir José

Este trabalho teve como objetivo o estudo e o dimensionamento de um pavilhão industrial metálico, de caráter meramente académico, destinado ao armazenamento de materiais. O pavilhão apresenta dimensões de 36 metros de comprimento, 24 metros de vão e é composto por sete pórticos dispostos longitudinalmente. Adotou-se uma abordagem integrada com base nas metodologias BIM (Building Information Modeling), utilizando licenças estudantis cedidas pela empresa Construsoft em colaboração com o Instituto Politécnico de Viseu. Para a modelação análise estrutural, dimensionamento e detalhamento dos principais elementos estruturais do projeto, foram utilizados os softwares Tekla Structural Designer e IDEA StatiCa. O processo teve início com a definição das ações atuantes na estrutura, em conformidade com os Eurocódigos, seguida da realização de análises estruturais, incluindo análises estíticas de primeira e segunda ordem, bem como a verificação de deslocamentos e tensões. Com base nesses estudos, foi possível determinar os perfis metálicos mais adequados para os elementos estruturais. Posteriormente, procedeu-se à verificação e ao dimensionamento detalhado das ligações metálicas, explorando a interoperabilidade entre os softwares Tekla Structural Designer e IDEA StatiCa, de forma a garantir a precisão dos resultados e a conformidade com os requisitos normativos. Adicionalmente, foram gerados elementos de documentação técnica com base no modelo estrutural desenvolvido, incluindo vistas gerais da estrutura e relatórios automáticos provenientes dos softwares utilizados. Estes relatórios apresentam os resultados das análises estruturais realizadas, as combinações de ações aplicadas, a verificação dos estados-limite e os critérios normativos adotados, constituindo uma ferramenta de apoio à validação do projeto. Os resultados obtidos confirmam que os elementos estruturais e as ligações metálicas dimensionadas cumprem os critérios de segurança e funcionalidade estabelecidos pelos Eurocódigos, tal como implementado nos softwares utilizados. Estes, por sua vez, baseiam-se em normas internacionais de referência, assegurando a conformidade do projeto com os requisitos regulamentares aplicáveis. Para além de cumprir os objetivos académicos propostos, este estudo constitui um contributo relevante para a consolidação de boas práticas na aplicação de ferramentas computacionais avançadas em estruturas metálicas, oferecendo uma base de apoio a futuros desenvolvimentos e aplicações profissionais na área da engenharia estrutural.

2025-07-17Master thesis

Open access