Browsing by Issue Date, starting with "2025-02-05"
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- A dupla residência das pessoas singulares no contexto da jurisprudência portuguesaPublication . Ceia, João Tomás Gomes da Silva; Santos, Leonardo João Marques dosA presente dissertação de mestrado aborda as problemáticas advindas da dupla residência de pessoas singulares, concretamente no caso português. Assim, neste estudo, procedemos a uma análise das situações em que se pode gerar a dupla residência e como resolvê-las, com o apoio da CMOCDE, um instrumento vital na interpretação do conceito de dupla residência, e das CDT’s, assim como as limitações do artigo 4.º, n.º 2 da CMOCDE. Nesta dissertação abordamos com especial ênfase a resposta dada ao problema da dupla residência pela jurisprudência nacional, através da análise de variados casos resolvidos pelos tribunais portugueses, assim como as alterações ao CIRS motivadas pelo resultado destes casos.
- Consumo de pornografia online : correlatos psicossociais e relação com crenças sobre violência sexual numa amostra de estudantes do ensino superiorPublication . Conceição, Bruna Daniela Fernandes; Maia, Berta Maria Marinho RodriguesA pornografia online apresenta diversas complexidades que têm sido alvo de investigação por parte da comunidade científica. Em Portugal, os estudos encontram-se em fases iniciais, desconhecendo-se as principais motivações para este consumo. Adicionalmente, a violência sexual tem sido uma preocupação a nível mundial, sendo que a pornografia online poderá contribuir para distorções acerca da intimidade e, por conseguinte, para a violência sexual. Deste modo, o presente estudo explorou os principais correlatos psicossociais do consumo de pornografia online e a relação entre o consumo de pornografia online e as crenças sobre violência sexual, numa amostra de estudantes do ensino superior. A amostra foi constituída por 50 estudantes, distribuídos igualitariamente por sexo e com uma idade média de 22.48 anos (DP = 2.75; variação = 1830). Foram aplicados o Questionário Sociodemográfico, o Questionário sobre Padrões de Uso da Internet e Conteúdo Pornográfico, o Cyber Pornography Use Inventory 9, o Dickman Impulsivity Inventory e a Escala de Crenças sobre Violência Sexual. Os resultados obtidos revelam que os participantes foram expostos a pornografia online aos 12.71 anos (DP = 2.21, variação = 818) e começaram a visualizar intencionalmente estes conteúdos aos 14.87 anos (DP = 2.93, variação = 825). Os homens apresentaram um consumo semanal (r = .60) e mensal (r = .61) de pornografia online e uma auto perceção de adição (r = .50) significativamente mais elevados. A idade de exposição à pornografia online mostrou se correlacionada com a compulsividade relativa à adição à pornografia online (rs = .30*). Verificou-se, igualmente, que a impulsividade disfuncional se encontra correlacionada com a compulsividade (rs = .30*). Por fim, foi possível encontrar uma relação entre a auto perceção de adição à pornografia online e as crenças sobre a violência sexual (rs = .28*). Torna-se importante sensibilizar pais, educadores e jovens acerca dos riscos associados à exposição precoce à pornografia online, de modo a acautelar os impactos posteriores associados a esta visualização, como a aceitação de crenças permissivas da violência sexual.
- Body composition analysis in metastatic non-small-cell lung cancer: depicting sarcopenia in portuguese tertiary carePublication . Mendes, José Leão; Ferreira, Rita Quaresma; Mata, Inês; Barreira, João Vasco; Rodrigues, Ysel Chiara; Dias, David Silva; Capelas, Manuel Luís; Mäkitie, Antti; Guerreiro, Inês Maria; Pimenta, Nuno M.; Ravasco, PaulaBackground/Objectives: Sarcopenia is an emergent prognostic biomarker in clinical oncology. Albeit increasingly defined through skeletal muscle index (SMI) thresholding, the literature cut-offs fail to discern heterogeneous baseline muscularity across populations. This study assesses the prognostic impact of using cohort-specific SMI thresholds in a Portuguese metastatic non-small-cell lung cancer (mNSCLC) cohort. Methods: Retrospective study including mNSCLC patients treated between January 2017 and December 2022. ImageJ v1.54 g was used to assess cross-sectional CT imaging at the third lumbar vertebra (L3) and calculate L3SMI. Sarcopenia was defined both according to Prado et al. and L3SMI thresholds derived from receiver operating characteristic analysis. Overall survival (OS) was the primary endpoint. Secondary endpoints included first-line (1L) progression-free survival (PFS) and sarcopenia subgroup analysis regarding body mass index impact on OS. Results: The initial cohort included 197 patients. Mean age was 65 years (±11.31). Most tumors were adenocarcinomas (n = 165) and presented with metastasis (n = 154). SMI was evaluable in 184 patients: cohort-specific thresholds (<49.96 cm 2/m 2 for men; <34.02 cm 2/m 2 for women) yielded 46.74% sarcopenic patients (n = 86) versus 66.30% (n = 122) per the literature definition. Cohort-specific thresholds predicted both OS (12.75 versus 21.13 months, hazard ratio [HR] 1.654, p = 0.002) and PFS (7.92 versus 9.56 months, HR 1.503, p = 0.01). Among sarcopenic patients, overweight (HR 0.417, p = 0.01) and obesity (HR 2.723, p = 0.039) had contrasting impacts on OS. Conclusions: Amid reclassification of nearly one-fifth of the cohort, cohort-specific thresholds improved sarcopenia prognostication in mNSCLC. Homogeneity regarding both cancer treatment setting and ethnicity could be key to defining sarcopenia based on SMI.
- Global comfort scale: construção e validação de conteúdoPublication . Veludo, Filipa; Marques, Rita Margarida; Pontifice Sousa, Patrícia; Dixe, Maria dos AnjosIntrodução: O conforto é um indicador de boas práticas pelo que é fundamental a sua promoção e avaliação, qualquer que seja a condição de saúde/doença da pessoa.Objetivo: Construir e validar o conteúdo da Global Comfort Scale.Métodos:Estudo metodológico. A validação de conteúdo foi realizada com recurso à técnica de e-Delphi com peritos que se pronunciaram acerca da clareza, pertinência e relevância. A validade de conteúdo dos itens foi verificada através do IVC-I e da escala através do IVC-S. O pré-teste efetivou-se por reflexão falada a 20 elementos da população alvo (pessoas adultas ou idosas, saudáveis ou em situação de doença) e aplicou-se a versão final do instrumento a 43 participantes.Resultados:12 peritos avaliaram o conteúdo dos itens do instrumento através de uma escala de resposta tipo Likert, tendo resultado numa escala final constituída por 55 itens com um critério de aceitabilidade superior a 0,80. Obteve-se um IVC-S relativo à clareza de 0,97; à pertinência de 0,90 e à relevância de 0,93, o que confirma a validade do conteúdo. Na reflexão falada, os participantes não tiveram dificuldades nem sugestões. Os 43 participantes, apresentam um bom nível de conforto em todos os itens. Verificámos um alfa de Cronbach de 0,981 e valores de correlação de Pearson do item com o total da escala sem o item entre 0,247 e 0,879.Conclusão:O instrumento apresentou bom índice de validade de conteúdo, seguindo-se numa fase posterior a validação psicométrica.
- How generational transitions manage digital technology’s introduction while balancing tradition and family values in SMEsPublication . Niederndorfer, Anna; Dinis, LilianaThis dissertation focuses on how family-run small and medium-sized enterprises leverage their unique knowledge resources to sustain their competitive advantage over non-family firms in the face of digital transformation. In addition, this work builds on the Resource-based-view, Stewardship Theory and Paradox Theory, particularly on the concept of innovation through tradition. This study examines how generational transitions balance the preservation of expertise with the introduction of digital knowledge management systems that promote transparency and sharing. A qualitative study was conducted with 15 interviews with senior and junior executives, including 13 in Austria and 2 in Mexico, in different industries. This approach made it possible to collect a wide range of data to understand digitalization in family businesses. Applying all three theories, these interviews reveal both the facilitators and barriers and how they manage the paradox of maintaining traditional family values while implementing systems that enable knowledge sharing for long-term innovation. The results show that generational dynamics have a strong influence on digitalization in family businesses and offer both opportunities and challenges. While younger managers emphasize more digital innovation, older generations focus on keeping traditions alive. The transfer of knowledge continues to be primarily through personal experience, shaped by close relationships since childhood and transmitted through a practice of “learning by doing”. However, integrating digital tools for process and knowledge documentation is becoming essential. Barriers such as generational risk differences and employee resistance can be overcome through open communication, training and gradual implementation.
- The longevity industry : a new model within healthcarePublication . Seidler, Victor; Rajsingh, PeterThe longevity industry, driven by advancements in biotechnology, AI-driven diagnostics, and digital health, is challenging traditional healthcare paradigms. This thesis analyzed funding trends in longevity-focused companies and identified emerging technologies poised to dominate the sector. Using data from platforms like PitchBook, along with expert interviews and surveys, the study explored the strategic focus of innovations that captured significant investor and consumer interest. Key technological advancements were evaluated for their growth potential and impact on the industry. The findings highlighted a shift from reactive to preventive care models, signaling strategic challenges for traditional healthcare providers. Longevity startups are leveraging innovations to integrate personalized care into existing systems rather than entirely revolutionizing them. New technologies and treatments transform healthcare into a more personalized, preventive model. Primary data from industry specialists and venture capitalists were combined with secondary research to present a comprehensive sector view. The study concluded that while longevity technologies hold transformative potential, their impact is more likely to complement and enhance traditional healthcare systems rather than replace them entirely.
- Art and design innovation in the luxury hospitality businessPublication . Vermeil, Armand Marie Daniel André; Rajsingh, PeterThis dissertation investigates how innovation in art and design contributes to a competitive edge in the luxury hotel industry. Combining an online survey and semistructured interviews, we analyzed the impact of aesthetics, cultural authenticity and artistic creation on customer experience, brand perception and Willingness-To-Pay a premium price. Quantitative results show that almost 86% of participants considered design and artistic staging to be essential elements in their hotel experience. Moreover, 83% said they were willing to pay a premium for a unique artistic concept or design, underlining the strong correlation between visual innovation and price. Statistical analysis also revealed that integrating local cultural elements, sustainability and storytelling around design increases emotional satisfaction and brand attachment. Interviews with experts confirmed the strategic importance of thoughtful, inimitable design: the creation of immersive spaces and collaboration with renowned architects or artists help to differentiate establishments in an increasingly competitive market. The study also revealed a gap between the current enthusiasm for sustainability and the extent to which it is considered when choosing hotels. While professional players insisted on integrating eco-responsible materials, only 30% of customers deemed this essential. Artistic and design innovation appeared to be a major lever for enriching the customer experience and justifying premium pricing. An authentic cultural approach, combined with meticulous aesthetics, coherent storytelling and premium hotel services and amenities, consolidates exclusivity and customer loyalty in luxury hotels.
- Rocking the boat : alt-fuels and the super yacht industryPublication . Hirtenlehner, Jerome Joseph; Rajsingh, PeterThe superyacht industry, traditionally associated with luxury and exclusivity, is under pressure. With rising public scrutiny, changing climate regulations, and demands from different stakeholders, it is essential to promote the adoption of alternative fuels. This study used a literature review, twelve semi-structured expert interviews, and a survey with 179 respondents to investigate drivers of alternative fuels for the superyacht industry. The findings indicated that regulatory frameworks were the leading driver of the transition to alternative fuels, outweighing incentives from yacht owners or market forces. Although younger, more environmentally conscious owners expressed interest in lower-emission propulsion systems, they remain reluctant to invest substantially in new technologies without regulatory mandates and sufficient infrastructure. Furthermore, contrary to the findings of the literature, the Veblen effect does not apply to superyachts. Among the alternative fuels, methanol, and hydrotreated vegetable oil appeared to be practical transitional options, while hydrogen and other advanced solutions are hampered by high costs and infrastructural challenges. Growing pressure from stakeholders, including increased scrutiny from environmental groups and the adoption of transparent lifecycle assessment tools, highlights the need for credible sustainability measures to avoid accusations of greenwashing. In conclusion, the superyacht sector is at a turning point. Decisive policy intervention, stakeholder collaboration, and a strategic focus on established alternative fuels provide a clear pathway to integrating environmental responsibility with luxury maritime experiences.
- To swe*r or not to swear? : impact of profane language in social media ads on brand perception and trustPublication . Jerónimo, Joana Filipa Correia; Braga, João NizaThis research aims to explore the strategic use of profanity in social media advertising, focusing on its effects on brand perceptions such as emotionality, authenticity, trustworthiness, and brand personality. By examining how different styles of profanity (uncensored, censored, euphemistic) and language proficiency (native vs. non-native) influence consumer attitudes, the study seeks to demystify the role of swearing in marketing communication. Through a 3 profanity style x 2 language proficiency between-subjects design, this study revealed that incorporating the heaviest forms of profanity, uncensored or censored, can effectively enhance perceptions of authenticity, hedonic qualities, and brand personality traits such as aggressiveness and activity. Conversely, for brands aiming to emphasize simplicity and sophistication, the use of euphemistic swear words in social media advertisements offers a compelling solution. These insights provide actionable guidance for brands to tailor their communication strategies based on their desired image and audience expectations.
- The influence of emotions, product type, and self-control on impulse buying : an online shopping perspectivePublication . Caravaggio, Silvia; Braga, João NizaImpulsive buying, characterized by unplanned and emotionally driven purchasing behavior, is a prevalent phenomenon in online shopping environments. This study explores the independent and combined effects of emotional states (boredom, stress, happiness), product type (hedonic vs. utilitarian), and self-control on impulsive buying tendencies. Using a quantitative approach, data were collected from 242 participants through an online experiment employing a three-way factorial design. Emotional states were induced using a validated memory recall task, and participants evaluated hypothetical shopping scenarios involving hedonic or utilitarian products. The results revealed significant main effects of product type, self-control, and emotional states on impulsive buying. Hedonic products elicited higher impulsive tendencies than utilitarian products, while participants with low self-control exhibited greater impulsivity across all conditions. Among emotional states, boredom was identified as the strongest driver of impulsive buying, followed by stress and happiness. However, no significant interactions were found between the variables, indicating that these factors operate independently. These findings highlight the critical role of boredom as an underexplored emotional driver in consumer behavior. Future research should address limitations, such as the lack of cultural diversity in the sample and the use of hypothetical scenarios, by incorporating real-world shopping environments and cross-cultural comparisons. This study contributes to the theoretical understanding of emotion-driven consumption and provides practical insights for designing ethical and consumer-centered online shopping experiences.