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Antecedents of Psychological Capital (PsyCap): An Analysis of Technical and Social Variables
Get PDFOver the past two decades, positive psychology researchers have explored the intricacies of
psychological capital (PsyCap), a multidimensional latent construct comprising resilience, selfefficacy, optimism, and hope, because it promotes desirable job attitudes and behaviors and
enhances job performance. Despite its established associations with favorable organizational
outcomes, the antecedents of PsyCap remain underexplored, limiting understanding of factors
fostering its development. This study aimed to identify the technical (role conflict and role
ambiguity) and social (supervisor support and perceived organizational justice) antecedents of
PsyCap. A quantitative method with a cross-sectional design was employed to achieve this
objective, collecting data via an online protocol consisting of self-report measures and a
sociodemographic questionnaire. The sample comprised 723 Portuguese Workers, with 42.8%
females and 57.2% males, meeting the inclusion criteria of being at least 18 years old and in
active employment. Multiple linear regression using R software has been selected as this
research’s primary data analysis technique. The analysis revealed that procedural and
interpersonal justice were positively associated with PsyCap, while distributive and
informational justice were not. Contrary to expectations, role conflict was positively associated with PsyCap, while role ambiguity established a negative relations. Supervisor support was not significantly related to PsyCap. These findings emphasize the importance of fair treatment and positive organizational interactions in enhancing PsyCap and highlight the nuanced roles of role stressors in its development. This study provides evidence to guide organizational practices to foster psychological resources in employees
Playful Work Design Measure: Validation Study for a Portuguese Sample
Get PDFWork design perspectives have recently focused on bottom-up strategies, such as job crafting
and playful work design (PWD). However, in the literature, there has not yet been a concern
to understanding how these constructs are distinguished, how they distinguish themselves
from other proactivity-related concepts (e.g., proactive personality), and how they relate to
different work attitudes and behaviors, as well as job performance. This study contributed to
adapting and validating a PWD measure for a Portuguese working sample. Also, it intended
to differentiate the concepts of job crafting and PWD and observe how they relate to different
work-related aspects (e.g., work engagement, job satisfaction, self-reported job performance,
affective commitment, and emotional exhaustion). Data was collected through an online
research protocol composed of self-reported measures and a sociodemographic
questionnaire. The data collection resulted in 597 valid responses from Portuguese workers
(68% females) aged 18 years or older (M=39.93; SD=12.68; Mdn=41). This research
followed a quantitative method using a cross-sectional design and a non-probabilistic
sampling technique. Data analysis techniques included descriptive statistics, confirmatory
factor analysis (CFA), testing for factor, convergent, discriminant, and criterion validity, and
reliability. Results showed that the Portuguese version of the PWD measure presented
evidence of factor, convergent, discriminant, and criterion validity and of reliability. Thus,
this measure can be considered accurate and precise for use in academic and professional
settings; that is, organizations can foster an environment that appreciates and allows
employees to feel more comfortable molding their work experience, either by engaging in
tasks in their own way or by making them more fun. Furthermore, the study proved that there
is enough evidence to affirm that PWD and job crafting are similar and are directly related
to proactive personality but different when it comes to the effects of their dimensions on
work-related aspects (e.g., increasing structural job resources and increasing challenging job
demands, dimensions of job crafting, showed a higher correlation magnitude with work
engagement than the dimensions of PWD). Therefore, they are different constructs
Multiple factors associated with forest decline in the context of control measures for the pinewood nematode
Get PDFForest decline is a complex phenomenon; however, there is often a tendency to oversimplify by attributing it to a single cause, neglecting the interaction of multiple factors. Ever since the detection of the pinewood nematode (PWN), Bursaphelenchus xylophilus, in Portugal (and in Europe) over two decades ago, pine wilt cases in the country have been primarily attributed to this pathogen, leading authorities to enforce strict containment and control measures. Other contributing factors are generally overlooked, with the system being easily overwhelmed by disturbances such as droughts and fires. In this study, a physiographic approach was used to assess multiple factors potentially affecting tree wilting, including environmental parameters in the landscape, alongside other biological agents, and infestation by the PWN. The study area is a highly managed production forest where control measures have been implemented since the detection of PWN in the 1990´s. Pine decline was found to be aggregated in the landscape, with topographic parameters associated with water availability playing a significant role. Wilting trees were affected by multiple biological agents, even though the density of PWN was positively correlated with the decline. However, B. xylophilus was also found to be present in asymptomatic hosts, suggesting an ability to persist for some time in healthy trees within the forest. This research illustrates the multifaceted nature of pine forest decline and the limitations of managing it as originating from a single cause. A critical overview of current PWN management measures is provided, along with proposals for a more heuristic and holistic approach
Plio-Quaternary coastal uplift along the western Iberian Margin: insights from dated marine terraces (Peniche, Portugal)
Get PDFThis study presents a detailed geomorphological and geochronological analysis of a marine terrace staircase developed into the Peniche Peninsula (Portugal), a rocky headland of Jurassic carbonate bedrock located in the central sector of the Western Iberian passive margin. The marine terrace levels are described morphologically and sedimentologically, but also dated using ESR and U-Series methodologies. The marine terrace staircase comprises six emerged levels ranging from 4 m (above mean sea level, asl) (Tm6) to 24–28 m asl (Tm1), inset into a summit wave-cut platform at 29–45 m asl (Pm). The marine terrace sediments are composed of rounded boulders to cobbles and coarse sands. Dating results reveal that the marine terrace staircase spans ∼900 ka across the Middle-Late Pleistocene. The terraces can be assigned to either a single sea-level highstand or a level that has been re-occupied by two sea level highstands. The staircase records very low uplift rates (0.04 to −0.02 m/ka; the longer-term mean rate for the entire Pleistocene staircase is 0.03 m/ka), typical of a passive continental margin. Regionally, coastal terrace staircases are typically found along the Western Iberian passive margin, with their configuration locally influenced by the underlying bedrock geology and tectonic history
Antonio Machado (1875 - 1939)
Get PDFEste verbete dá a conhecer, resumidamente, os géneros literários que Antonio Machado cultivou, bem como as trajectórias vitais, filosóficas e políticas, que marcaram a sua existência.----------------------------------This entry briefly describes the literary genres cultivated by Antonio Machado, as well as the vital, philosophical and political trajectories that defined his existence
Programa de Pós-graduação: Estudo da língua e suas tecnologias para o desenvolvimento de projetos em Humanidades Digitais
No full textEste documento, submetido à prova de Habilitação para o Exercício
de Funções de Coordenação Científica, apresenta conjuntamente uma
proposta de um programa de investigação (Parte1), e de um programa
de pós-graduação (Parte 2). O documento elabora sobre o papel da
língua portuguesa e suas tecnologias para o desenvolvimento das Humanidades
Digitais. A proposta está contextualizado na investigação
da proponente, em curso no CIDEHUS - Centro Interdisciplinar de
História Culturas e Sociedades da Universidade de Évora. A última
parte (Parte 3) apresenta as considerações finais
CNN INOVAÇÃO - Universidade de Évora - Malagueira
Get PDFEpisoódio do CNN INOVAÇÂO sobre o Projeto Malagueira.p
Vocal Exercises and Specific Techniques for Professional Singers in the Period of the Menopause
Get PDFAs fases da Menopausa podem ser um desafio para qualquer Mulher. As cantoras
profissionais não são uma exceção. Não têm apenas de lidar com os sintomas físicos
gerais causados pela questão hormonal, mas também outras questões relacionadas
concretamente com a Voz podem causar problemas variados. Até à década de 80 do
século XX, muito pouca literatura existia relativa a este tópico. A partir daí assistimos a
um florescer de pesquisa científica nesta área. Embora estes académicos que se
dedicaram sobre efeitos da Menopausa em cantoras se tenham debruçado acerca da
parte científica do processo, pouca clarificação foi dada no que respeita a exercícios
vocais que poderiam ser utilizados por profissionais do canto para lidar com essa fase
tão delicada na vida de uma Mulher. A dez especialistas em Voz (três cantoras
profissionais, três professores de técnica vocal e quatro terapeutas da Voz) foram
enviadas gravações de uma série de exercícios, cientificamente aprovados para
combater o envelhecimento da Voz, solicitando em questionário se tinham
conhecimento dos mesmos, se os utilizavam nas suas práticas regulares e por fim, se
poderiam recomendar alternativas a estas propostas. O resultado da investigação
demonstrou que os exercícios foram reconhecidos e a maioria utilizados na atividade
destes profissionais, embora nem sempre contextualizados com a menopausa
especificamente. Apenas uma cantora profissional reconheceu e confirmou o uso de
todos os exercícios no seu aquecimento vocal. As restantes inquiridas reconheceram
os exercícios, mas não sugeriram recomendações. Este estudo demonstra que existem
exercícios e técnicas que podem ajudar no tratamento e manutenção da Voz na
Menopausa. No entanto são maioritariamente utilizados para outros problemas vocais
(em terapia vocal) e como manutenção no ensino do canto. As cantoras profissionais
necessitam de mais conhecimento nesta área para identificar procedimentos que
possam auxiliar efetivamente nesta fase da sua Vida.
Golden Years: Mineralogical associations in the Casa-Novas orogenic gold deposit in the Ossa-Morena Zone (Portugal)
Get PDFGold mineralisations are frequently associated with orogenic belts where accretionary and collisional processes create favourable conditions for mineral deposit formation. These belts, subject to metamorphism and deformation, host significant gold resources in structurally controlled hydrothermal systems. Among the various models explaining gold transport and deposition, the role of bismuth (Bi)-rich fluids has recently emerged as a key factor in understanding the genesis of many orogenic gold deposits.
Orogenic gold deposits are formed under moderate to high pressures and temperatures ranging from 300◦C to 475◦C, typically between depths of 6 to 12 km. These deposits are often associated with shear zones, faults, and other crustal-scale deformation structures. The gold is transported in hydrothermal fluids as Au-HS complexes, with subsequent deposition triggered by chemical reactions, phase separation, or cooling.
The geological setting of the Casas Novas gold deposit provides an excellent example of orogenic gold mineralization. The region is characterized by complex metamorphic and magmatic processes, with significant fluid-rock interaction. The mineralised zones are predominantly hosted within quartz veins, associated with chlorite and sericite alteration, indicating a hydrothermal origin.
Recent studies emphasize the importance of bismuth in gold scavenging and deposition. Bismuth acts as a key carrier for gold, forming Au-Bi alloys and bismuth tellurides during the cooling of hydrothermal fluids. Experimental studies on the Au-Bi phase diagram indicate that gold remains dissolved in Bi-rich melts at elevated temperatures but precipitates as native gold upon cooling below _~371◦C, with further stabilization at _~116◦C. At Casas Novas, gold mineralization is closely associated with bismuth-bearing minerals such as maldonite (Au2Bi), hedleyite, and native bismuth. These phases occur within arsenopyrite and loellingite assemblages, suggesting that gold was initially transported as a Bi-Au melt or complex before being deposited in response to temperature reduction and sulfidation reactions. The precipitation of gold in orogenic systems follows several key mechanisms: i) Cooling and Phase Separation – As hydrothermal fluids migrate through shear zones, they cool, causing gold to destabilize and precipitate in quartz veins and shear-hosted structures; ii) Bismuth Transport and Gold Scavenging – Bismuth-rich melts effectively concentrate and transport gold. The interaction of Bi-melts with sulphides such as arsenopyrite leads to the exsolution of gold, often as nano-scale inclusions; iii) Sulfidation Reactions – The transformation of loellingite to arsenopyrite during retrograde metamorphism is accompanied by the release and redistribution of gold. Our findings highlight that this Bi-Au interaction occurred in the CasasNovas gold deposit.
The metallogenic model for gold deposits in the Casas Novas region aligns with global studies emphasizing bismuth as a critical agent in gold transport. The presence of Bi-rich minerals, coupled with the observed temperature-dependent gold precipitation, supports the hypothesis that gold was scavenged by bismuth-rich orogenic fluids and later precipitated due to phase separation and sulfidation. This model enhances the understanding of orogenic gold systems and has implications for future exploration strategies targeting Bi-associated gold mineralization. Acknowledgements: This work was funded be the FCT Portuguese National Science and Technology Foundation projects UIDB/04683 and UIDP/04683
ABRIR KAMINHU. Cerâmica, anil e urzela
No full textA investigação artística ABRIR KAMINHU: cerâmica, anil e urzela tem como questão central compreender de que modo se pode tornar visível o trabalho artístico de uma mulher negra cabo-verdiana no campo da arte contemporânea. Como questões secundárias destacamos de que modo a cor, a resistência, a performance, a memória, o decolonial, a desigualdade e a sobrevivência, se intersectam na arte contemporânea realizada por mulheres artistas negras. O caminho desta pesquisa artística, orienta-se na direção de reescrever a história da arte, na medida em que no seio da mesma se verifica a ausência de mulheres artistas cabo-verdianas, e de criar um conjunto de instalações artísticas, recorrendo à cerâmica, performance e tinturaria. Interessa-me a pós-memória, como ferramenta de estudo, no sentido de reinterpretar a história, ainda baseada em dinâmicas coloniais negativas. Nesta investigação, importa pensar sobre sinergias interculturais e sociais, para melhor observar e entender a construção da Outra na arte, recorrendo às perspetivas decoloniais das pensadoras bell hooks (EUA, 1954), Françoise Vergès (França, 1952), Angela Davis (EUA, 1944), Lélia Gonzalez (Brasil, 1935–1994) e Conceição Evaristo (Brasil, 1946). Esta pesquisa inspira-se também nas artistas Barbara Hepworth (Reino Unido, 1903–1975), Ana Mendieta (Cuba, 1948–1985), Magdalene Odundo (Quénia, 1950), Maria Magdalena Campos-Pons (Cuba, 1959) e Regina José Galindo (Guatemala, 1974). O resultado final integra um conjunto de instalações artísticas, criadas por mim, que procuram contribuir para a construção de uma nova narrativa da arte contemporânea que inclua as mulheres artistas cabo-verdianas; - ABRIR KAMINHU: ceramics, indigo and urzela
Abstract:
The artistic research ABRIR KAMINHU: ceramics, indigo and urzela focuses on understanding how the artistic work of a black Cape Verdean woman in the field of contemporary art can be made visible. Secondary issues include how colour, resistance, performance, memory, decolonialism, inequality and survival intersect in contemporary art produced by black female artists. This artistic research aims to rewrite art history, given the absence of Cape Verdean women artists within it, and to create a series of artistic installations using ceramics, performance and dyeing. I am interested in post-memory as a tool for study, in the sense of reinterpreting history, which is still based on negative colonial dynamics. In this research, it is important to think about intercultural and social synergies in order to better observe and understand the construction of the Other in art, drawing on the decolonial perspectives of thinkers bell hooks (USA, 1954), Françoise Vergès (France, 1952), Angela Davis (USA, 1944), Lélia Gonzalez (Brazil, 1935–1994) and Conceição Evaristo (Brazil, 1946). This research is also inspired by the artists Barbara Hepworth (United Kingdom, 1903–1975), Ana Mendieta (Cuba, 1948–1985), Magdalene Odundo (Kenya, 1950), Maria Magdalena Campos-Pons (Cuba, 1959) and Regina José Galindo (Guatemala, 1974). The final result is a set of art installations, created by me, which seek to contribute to the construction of a new narrative of contemporary art that includes Cape Verdean women artists