Institutional Repository Universidade Portucalense
Not a member yet
6170 research outputs found
Sort by
Cronótipo e relações afetivas: o impacto dos ritmos biológicos nas dinâmicas de atração e conexão emocional
No full textA crescente investigação sobre a influência dos ritmos biológicos na vida quotidiana
tem destacado o papel do cronótipo nas dinâmicas interpessoais. Contudo, os mecanismos
que ligam esta predisposição individual à qualidade dos relacionamentos íntimos
permanecem pouco explorados. O presente estudo teve como objetivo central investigar o
papel mediador em série da satisfação conjugal e da intimidade na relação entre o
cronótipo (matutinidade-vespertinidade) e a satisfação sexual. A amostra foi constituída
por 121 indivíduos em relacionamentos conjugais, que responderam a um conjunto de
questionários de autorrelato. Para testar o modelo teórico, recorreu-se a uma análise de
caminhos através da macro PROCESS para SPSS (Modelo 6). Os resultados confirmaram
o modelo de mediação em série. A análise revelou um efeito indireto significativo,
demonstrando que uma maior propensão para a matutinidade se associa a uma maior
satisfação conjugal, a qual, por sua vez, promove maiores níveis de intimidade, culminando
numa maior satisfação sexual. O efeito direto do cronótipo na satisfação sexual não se
revelou estatisticamente significativo quando os mediadores foram incluídos no modelo,
sugerindo uma mediação total. Conclui-se que a influência do cronótipo na satisfação
sexual não é direta, mas sim um processo sequencial canalizado pela qualidade do vínculo
relacional. Estes resultados sublinham a importância da satisfação e da intimidade como
mecanismos centrais na melhoria do bem-estar conjugal e sexual, sugerindo implicações
relevantes para a prática clínica com casais.Growing research on the influence of biological rhythms in daily life has highlighted
the role of chronotype in interpersonal dynamics. However, the mechanisms linking this
individual predisposition to the quality of intimate relationships remain underexplored. The
primary objective of this study was to investigate the serial mediating role of marital
satisfaction and intimacy in the relationship between chronotype (morningnesseveningness)
and sexual satisfaction. The sample consisted of 121 individuals in marital
relationships, who completed a set of self-report questionnaires. To test the theoretical
model, a path analysis was conducted using the PROCESS macro for SPSS (Model 6).
The results confirmed the serial mediation model. The analysis revealed a significant
indirect effect, demonstrating that a greater morningness propensity is associated with
higher marital satisfaction, which in turn predicts higher levels of intimacy, ultimately leading
to greater sexual satisfaction. The direct effect of chronotype on sexual satisfaction was not
statistically significant after accounting for the mediators, suggesting full mediation. In
conclusion, the influence of chronotype on sexual satisfaction is not direct but is instead a
sequential process channeled through the quality of the relational bond. These findings
highlight the importance of satisfaction and intimacy as core mechanisms in the architecture
of marital and sexual well-being, suggesting relevant implications for clinical practice with
couples
Cronótipo, (des)regulação emocional e memória de trabalho: uma investigação com estudantes universitários
No full textOs ritmos circadianos, que refletem variações individuais nos padrões biológicos de sono e vigília, estão associados a funções vitais como o bem-estar psicológico e o desempenho cognitivo. A tipologia circadiana (cronótipo) e a realização de tarefas em momentos mais ou menos alinhados com o ritmo biológico individual podem influenciar o funcionamento cognitivo, especialmente em contextos exigentes, como o académico. No entanto, a forma como estes fatores interagem com a regulação emocional permanece pouco estudada. Este trabalho teve como objetivo explorar a relação entre ritmos circadianos, fatores emocionais e desempenho cognitivo em estudantes universitários, através de dois estudos complementares. O primeiro estudo (N = 345) analisou o papel mediador das dificuldades de regulação emocional na relação entre estratégias cognitivas desadaptativas e distress psicológico (ansiedade, depressão e stress), revelando invariância deste modelo entre diferentes cronótipos. No segundo estudo, um grupo de 57 participantes (25 matutinos e 32 vespertinos) realizou uma tarefa de memória (Operation Span Task - OSPAN) com estímulos emocionais em momentos do dia considerados ótimos (síncronos) e não ótimos (assíncronos). Os resultados não revelaram efeitos significativos do cronótipo ou do momento do dia no desempenho cognitivo. Embora não se tenham encontrado as diferenças expectáveis entre cronótipos extremos quando a tarefa foi realizada em sincronia e assincronia, este trabalho permitiu apresentar um mecanismo psicológico subjacente à relação entre regulação cognitiva emocional, dificuldades de regulação emocional e distress, sendo esse padrão invariante para os diferentes cronótipos, mas reforçando a interligação entre do domínio cognitivo na regulação emocional, independentemente do ritmo biológico dos indivíduos. Os dados obtidos abrem caminho para futuras investigações que explorem a complexa interação entre emoção, cognição e fatores biológicos em populações e contextos distintos.Circadian rhythms, which reflect individual variations in biological sleep–wake patterns, are associated with vital functions such as psychological well-being and cognitive performance. Circadian typology (chronotype) and the extent to which task performance is aligned with one’s biological rhythm may influence cognitive functioning, particularly in demanding academic contexts. However, how these factors interact with emotional regulation remains insufficiently studied. Through two complementary studies, this dissertation examined the relationship between circadian rhythms, emotional factors, and cognitive performance in university students. The first study (N = 345) investigated the mediating role of emotional regulation difficulties in the relationship between maladaptive cognitive strategies and psychological distress (anxiety, depression, and stress), demonstrating the invariance of this model across different chronotypes. The second study involved an experimental group of 57 participants (25 morning-types and 32 evening-types), who performed a memory task (Operation Span Task - OSPAN) with emotional stimuli at both optimal (synchronous) and non-optimal (asynchronous) times of day. Results did not reveal significant effects of chronotype or time of day on performance. Although the expected differences between extreme chronotypes in synchronous versus asynchronous conditions were not observed, this research identified a psychological mechanism underlying the relationship between cognitive emotion regulation, emotional regulation difficulties, and psychological distress. This pattern proved invariant across chronotypes, but reinforcing the interconnection between cognitive processes and emotion regulation, regardless of individuals’ biological rhythms. The findings open avenues for future research exploring the complex interplay among emotion, cognition, and biological factors across diverse populations and contexts
Survapp: A shiny application for survival data analysis
No full textThere is a substantial demand for user-friendly graphical interfaces that empower professionals with limited programming knowledge to perform statistical analysis. Although R software is widely used for statistical analysis, it lacks an adequately intuitive graphical interface for individuals without statistical and programming skills. This paper aims to address this gap by introducing an application called Survapp, enabling users, regardless of their computational knowledge, to conduct survival analysis. The development leveraged R software, RStudio, and the Shiny package to create an interactive web app.
Survapp incorporates diverse methodologies for analyzing survival data, including Kaplan-Meier, log-rank tests, Cox regression models, parametric accelerated failure time models, decision trees, random forests, and competitive risk analysis (a specific case of multi-state models). Survapp enables users to analyze survival data, offering example databases for various methodologies within the application. However, the primary objective is to allow users to import their own data and conduct their respective analyses in a user-friendly environment. A distinguishing aspect of Survapp is its interface, bridging the gap between complex statistical methods and users with limited statistical and programming expertise
O Mecanismo de Ajustamento de Carbono nas Fronteiras (MACF) [artigo de imprensa]
No full textO problema ambiental tem uma dimensão global e diferentes partes interessadas têm promovido iniciativas que alinham estratégias globais. Assim, as jurisdições têm implementado várias medidas para atingir os objetivos de sustentabilidade, sendo o ajustamento do carbono nas fronteiras (ACF) uma dessas medidas. [...
Advancing fake news detection with Graph Neural Network and Deep Learning
Get PDFIn the modern era of digital technology, the rapid distribution of news via social media platforms substantially contributes to the propagation of false information, presenting challenges in upholding the accuracy and reliability of information. This study presents an updated approach that utilizes Graph Neural Networks (GNNs) alongside with advanced deep learning techniques to improve the identification of false information. In contrast to traditional approaches that primarily rely on analyzing text and assessing the credibility of sources, our methodology utilizes the structural information of news propagation networks. This allows for a detailed comprehension of the interconnections and patterns that are indicative of misinformation. By analyzing the intricate, graph-based connections between news items, our approach not only overcomes the constraints of conventional fake news detection methods but also demonstrates significant enhancements in detection accuracy. This paper emphasizes the revolutionary nature of utilizing Graph Neural Networks (GNNs) in the field of fake news detection. It also examines the potential consequences of our research in reducing the propagation of false information. Our model achieved an impressive accuracy rate of 97\%, demonstrating a significant improvement in its ability to identify and classify fake news. The findings highlight the substantial improvement in the ability to detect fake news provided by GNNs in comparison to traditional methods, demonstrating promising growth in the struggle against false information
Unveiling triple bottom line’s influence on business performance
Get PDFAddressing environmental, social, and economic challenges has become a pressing global priority. The Triple Bottom Line (TBL) framework offers a holistic approach for evaluating corporate performance by integrating economic, envi- ronmental, and social perspectives. Despite its increasing adoption in both managerial and academic research, there remains a significant gap in understanding how the TBL framework influences business performance. To address this, the study conducts a bibliometric review of 207 publications from the Web of Science database. The review highlights the multifaceted impact of practices linked to the TBL dimensions on business performance while introducing the TBL Influence on Business Performance model. This model provides valuable insights into how businesses can effectively apply TBL principles to address socio-environmental challenges, foster innovation, and achieve sustained long-term performance. The findings contribute valuable theoretical and practical insights into how organizations can utilize TBL principles to strengthen resilience, innovation, and performance in the face of global socio-environmental challenges
Agricultural support units: Buildings to structure the rural territory
Get PDFFrom the dovecotes in the northeast mountains to the windmills on the central coast, it is absolutely imperative to resort to vernacular architecture as an integral part of the collective memory that shapes the cultural landscape of Portugal.
Prior to the city, before (temporally and spatially) the urban building, and always beyond housing, the agricultural support building constitutes an inevitable legacy in the national built heritage. To understand the Portuguese territory without it, without considering their ethnographic and architectural terms, without perceiving its importance in the critical review of the modern movement, implies refusing a significant part of the foundations on the international recognition of contemporary Portuguese architecture and its relationship with the context (in its physical and cultural dimension).
Using the iconic granary (through its basic function, diversity and evolution), this reflection tests a critical itinerary having as parameters the Programme, Context and Time of this typology. According to the methodological organisation proposed in the research project: “Building Typology. Morphological Inventory of Portuguese City”. Somewhere between the recognition of its expiration and the moral (ir)relevance of its Documentation, between the original functional pragmatism and the (f)utility of reinterpretation, between technological inconsistency and cultural sustainability; this text intends to characterise and reflect on the role of this type of heritage in cataloguing and classifying our architectural heritage
Preventive conservation of vernacular adobe Architecture at seismic risk: The case study of a world heritage historical city
Get PDFSpecial Issue Earthen Architecture: Challenges and Opportunities for the 21st Century.Heritage is strengthened through proactive actions, known as preventive con- servation, that are considered before earthquakes, rather than reactive actions addressed when the emergency situation occurs. Considering that there are several regions around the world with very active seismicity, conservation interventions should guarantee human safety and the improvement of the inhabitant’s living conditions while keeping alive the earthen fabric and adobe buildings, thus preserving the lives of the residents but also preserving cultural heritage in the face of earthquakes. The main aim of this paper is to define a comprehensive conservation procedure addressing the preventive conservation of vernacular adobe vaulted houses in Yazd, an Iranian World Heritage property, since 2017. The fundamental phases of this procedure, which this paper’s structure is based on, include introducing the case study and addressing the conservation objectives, the assessment of significance and value, the seismic criteria, the conservation strategies, seismic safety assessment, and decision-making on interventions. The comprehensive preventive conser- vation procedure presented in this paper was determined by relevant conservation criteria, which contributed to an adequate seismic-retrofitted intervention design. This conservation approach requires evaluation of the seismic performance and the buildings’ safety, through which the decision regarding intervention could be made. Accordingly, this research also dealt with the seismic safety assessment of an adobe building through numerical research work performed using the software HiStrA Ver.2022.1.6. Based on the numerical results, decisions on the need and on the extent of intervention techniques were addressed. In addition, a comparative study was performed on different seismic strengthening techniques available in the literature to define fundamental conservation criteria. In this way, there are more chances for human lives to be preserved if an earthquake occurs
A estabilização da região do Sahel: Que papel para a CEDEAO [Brief]
Get PDFA região da África ocidental foi sacudida por uma onda de golpes de Estado que fez cair o governo em seis países da região – Guiné-Conacri, Mali, Burkina Faso, Níger, Chade, Sudão – que tem sido apelidada de Coup Belt. Os golpes de Estado podem ser entendidos como fenómenos abruptos, organizados e operados por uma fação militar (sobretudo), visando remover o poder político. Estamos perante episódios que acontecem num curto espaço de tempo e que configuram um problema de segurança para o Estado e para os cidadãos. Os golpes de Estado na região do Sahel não foram exceção e trouxeram uma instabilidade e incerteza a uma região já afetada pela insegurança, proliferação de grupos jihadistas, mas, sobretudo, pela pobreza e escassez de recursos e oportunidades