Browsing by Issue Date, starting with "2023-10-18"
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- Detecting aggressive behaviour patterns using video analysis in farmed rainbow trout (Onchorynchus mykiss) in recirculating aquaculture systems (RAS)Publication . José, Alexandre Miguel Poeira; Oliveira, Catarina Cortes Valente de; Prescott, Steven G.In 2018, the European Union funded the iFishIENCi Horizon 2020 project to promote sustainable aquaculture production while improving aquafeed usage and reducing wastes. Given that feed ration and fish behaviour may have a significant impact on production efficiency and fish welfare, one aim of the iFishIENCi project was to incorporate automated feeding and behaviour assessments of juvenile rainbow trout (Oncorhynchus mykiss) to assess the relationship between aggressive behaviour frequency with different feed ratios (FR). Under the scope of this project, one-hundred rainbow trout were cultivated in a recirculating aquaculture system (RAS) and a feed availability/behavioural frequency experiment was conducted implementing three distinct feeding regimes. Feeding regimes intended to investigate aggression at different levels of feed availability: Minimum FR (1.99% total biomass), Recommended FR (2.44% total biomass) and Maximum FR (2.88% total biomass). Pursuing, circling, lateral display, and frontal confrontations were taken into consideration. Behaviour frequency was monitored during prefeeding and postfeeding events at 12-minute intervals. Significant influences of FR were between Minimum FR and Maximum FR in prefeeding events, and between Recommended FR and Maximum FR for postfeeding events. Mean frequency values recorded for Recommended FR peaked for prefeeding events with pursuing behaviours ( = 252.0 ± 210.4), and with circling in postfeeding events ( = 74.3 ± 39.58). The findings indicate FR influence in aggressive behaviour frequency, with Maximum FR being the optimum to minimize fish aggression. Further research is needed to continue to improve efficient aquaculture production and to develop new techniques to minimize fish aggression.
- Life satisfaction and health related quality of life among older people (65+) in GhanaPublication . Owusu, Daniel Kwaku; Ferreira, Lara NEffective aging can be seen in the need for fulfillment, satisfaction with life, mental health, body emotions, happiness, and the way things are going in life. Still, there isn't a lot of research on the quality of life (QoL) of older people in Ghana's rural areas. Older people live in rural areas and urban slums in some developing nations where pension programs do not exist (Aikins and Koram, 2017; Kpessa-Whyte, 2018). The study sought to study the satisfaction with life and health-related quality of life (HRQoL) of people aged 65 and over in Ghana and explore how it affects their life satisfaction. The study used a predominantly quantitative methodology to reach out to as many people as possible. 578 respondents were chosen using the snowball sampling approach and the purposive sampling technique. Questionnaires were used to gather the relevant information from the respondents. The questionnaire was divided into four sections: satisfaction with life scale (SWLS), personal wellbeing, HRQoL, and sociodemographic profile. Descriptive statistical analyses (i.e., mean, standard deviation [SD], frequencies, and proportions [%]) were carried out to describe the sample and the respondents' satisfaction with life and wellbeing. Parametric tests using correlation and SEM were conducted to analyze the sample. The study found that older people in rural areas of Ghana have higher life satisfaction due to their own ideals, having an excellent life and not making changes. However, they are not satisfied with their lives and the number of things they have achieved in life. In terms of HRQoL, older people are more concerned about self-care, mobility, and their usual activities but less about their pain, discomfort, and anxiety or depression. HRQoL leads to life satisfaction. The study suggests that there should be a public policy on older people, as monitoring HRQoL and life satisfaction is critical to the development of sound public policy. The government should initiate a social intervention scheme to provide older people in rural areas with an apartment or building with a lot of elderly people to help them not feel lonely.
- Desenvolvimento de uma aplicação web para visualização de parametros ambientaisPublication . Garcia, Breno Tartaroni Soares; Rodrigues, J. M .F.Entende-se por aplicações web ou web apps uma solução que é executada diretamente no navegador (browser), não sendo preciso fazer uma instalação na máquina do utilizador. Este relatório de estágio descreve o desenvolvimento de uma web app para a visualização de parâmetros ambientais usando tecnologias e técnicas modernas de desenvolvimento web, como implementação do CI/CD (Continuous Integration/Continuous Delivery). O relatório descreve o que é CI/CD e suas melhores práticas, bem como algumas medidas de segurança que devem ser levadas em consideração. Analisa e descreve as ferramentas usadas, nomeadamente a framework Scrum, Angular, Spring Boot, MySQL, Keycloak e ActiveMQ. Apresenta um estado da arte sobre aplicações semelhantes no mercado e descreve em detalhe o desenvolvimento da web app. Quanto a aplicação, é capaz de fornecer informações precisas sobre o tempo atual e previsões futuras para várias cidades em toda a Espanha. A interface do utilizador é projetada de forma intuitiva e interativa, embora o design seja muito parecido com outros existentes, permitindo que os utilizadores visualizem facilmente as informações meteorológicas relevantes. A aplicação também fornece recursos adicionais, como autenticação (login/logout) e lista de favoritos. Os testes e resultados efetuados pelo cliente (“orientador industrial”) mostram que a aplicação é eficaz e fácil de usar fornecendo informações úteis e precisas para os utilizadores.