FEC2-Artigos (em revistas ou actas indexadas)
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- Exploring the relationship between clean energy indices and oil prices: a ten-day window approachPublication . Dias, Rui; Galvão, Rosa; Cruz, Sandra P.; Irfan, Mohammad; Teixeira, Nuno; Gonçalves, SidalinaThis paper aims to assess the comovements between clean energy indices, namely the Clean Energy Fuels (CLNE), Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), TISDALE Clean Energy (TCEC.CN), Wilderhill (ECO), West Texas Intermediate (WTI) stock indices, over the period from 1 January 2018 to 23 November 2023. We used 10-day windows to analyse the duration and nature of the shocks. Granger causality tests revealed that 20 of the 30 possible pairs showed significant movements, with the WTI influencing all the clean energy indices, highlighting its global importance. CELS also showed a robust influence on all pairs, while SPGTCLEN had a significant but less far-reaching influence. The CLNE and ECO indices showed limited influences, suggesting the potential for diversification, the TCEC.CN proved to be independent and a determining factor for portfolio diversification. The Impulse Response Functions (IRF) confirmed significant movements between CELS, SPGTCLEN and WTI, reflecting the market's response to policies and adjustments in expectations. Fluctuations in oil prices substantially affect clean energy indices, highlighting the interconnectedness and volatility of these markets. In conclusion, these results indicate that despite the growth of clean energy, the sector is still influenced by fluctuations in the fossil fuel market.
- Mapping organizational culture, work motivation and innovative behaviour, before and during the crisis: a bibliometric analysisPublication . Rodrigues Guita Almeida, Maria Helena; Kumi, S.; Lampreia Carvalho, FatimaAbstract COVID-19 and the Russia–Ukraine war have profoundly transformed the organisational culture of many organisations, shifting from a focus on security to innovation, which poses a major challenge for managers in all aspects of service delivery, including the healthcare sector. This article addresses gaps in the literature by exploring and mapping the evolution of organisational culture, work motivation, and innovative behaviour before and during the crisis (2012–2018), and summarises the relationship between these variables in 25 selected articles. A literature review on Web of Science with bibliometric analysis and RStudio was conducted. The dynamics, associations, dimensions, and networks that emerge as a way of adapting to new contexts to foster innovation are examined. Results indicate that keywords have evolved over time, and a positive and significant relationship between organisational culture, motivation, and innovation was also identified. The findings suggest that organisations should focus on organisational culture to leverage it as a tool for motivating and fostering innovative behaviour in the workplace.
- Measuring the effect of deprivation on primary health care performance using data envelopment analysis and Malmquist IndicesPublication . Merelie, Holly Bea; Amado, Carla; Pereira dos Santos, SérgioLife expectancy is typically shorter in areas with higher deprivation, highlighting the need for policymakers and health care managers to focus on reducing health inequalities through efficient and effective care. This study aims to assess the impact of deprivation on primary health care performance using data from the National Health Service (NHS) in England. Two methods are applied: Data Envelopment Analysis (DEA) to evaluate the performance of 188 Clinical Commissioning Groups (CCGs), whose duties were recently taken on by the new Integrated Care Systems (ICSs), and the Malmquist Index (MI) to assess deprivation’s effect on performance. The DEA results reveal significant variation among CCGs in equity, efficiency, and effectiveness, indicating substantial room for improvement. The MI results show that while CCGs in more deprived areas had more resources per capita and higher efficiency, they were generally less effective than those in less deprived areas. This emphasizes the need to enhance health and social policies to address persistent health inequalities due to deprivation, a critical challenge for the new ICSs. This study illustrates how DEA and the MI can support policymakers and managers in this effort.
- Economic reconversion and the creation of new trajectories in peripheral mining regions: proposing a theoretical frameworkPublication . Belisario, Helen; Pinto, Hugo; Guimarães, Liliane de OliveiraSeveral regions around the world face the challenge of renewing their economies when the usual growth trajectory begins to weaken. In territories where a particular economic activity predominates - a lock-in, as in the case of mining regions it is considered essential to define new trajectories that allow for economic diversification following the closure of extraction activities. These regions are at a critical juncture to plan for future diversification. This article seeks, based on the literature of evolutionary economic geography (EEG), to expand the understanding of the relationship between mining in peripheral areas and regional diversification, highlighting the role of regional actors in creating new trajectories, whether related to mining or not. The search for a path creation model that considers social, environmental, and economic aspects is becoming increasingly important, both for civil society and for initiatives from national, international, and regulatory bodies. As such, the discussion about path development has gained significant prominence in political agendas and civil dialogues. The article presents a theoretical framework that cyclically integrates the creation of new trajectories, influenced by the actions of local agents, who also contribute to strengthening territorial resilience.
- Revisitando a hipótese da estagnação secular à luz do paradigma da complexidadePublication . Morais, HenriqueApós as disrupções trazidas, também ao cenário macroeconómico, por fenómenos como a pandemia do COVID 19 e a invasão da Ucrânia, é provável que o tema da estagnação secular do crescimento económico, retomado em 2013 depois do contributo original de Alvin Hansen, venha novamente a ocupar, até pela sua verificação empírica, um lugar central na investigação e na análise geoeconómica. O paradigma dominante, pelo menos desde o início do século XX, não apenas nas ciências dita exatas, nas também noutras áreas das ciências sociais, como a economia, tem sido caracterizado pelo determinismo, pela confiança quase ilimitada nos modelos lineares, nas suas conclusões e na sua quase infalibilidade. Tem sido evidente a falta de precisão destes modelos, nomeadamente naquilo que supostamente seria a sua grande força, ou seja, a capacidade preditiva. Acontecimentos como a crise financeira de 2007/2008, a crise das dívidas soberanas europeias que se lhe seguiu, o aumento significativo do contributo dos mercados emergentes para a riqueza global, têm mostrado como estes modelos lineares são limitados na sua capacidade de análise e, também por isso, suscetíveis de virem a ser olhados com algum ceticismo pelos decisores. Perante este quadro concetual, pretendemos revisitar a tese de estagnação secular, nos seus alicerces teóricos fundamentais, mas também na evidência empírica com os dados mais recentes e, para além disso, olhar para uma visão alternativa à do mainstream.
- Show me the money: A systematic literature review on financial transparency and USALI’s global adoption challengesPublication . Elston, Jennifer Nicole; Coelho, Luis; Peixinho, RúbenThis systematic literature review explores the adoption and implementation of the Uniform System of Accounts for the Lodging Industry (USALI) across 25 studies, including academic articles and grey literature. This review aims to shed light on the diverse experiences of hotels adopting USALI by examining its impact on financial transparency, cost allocation practices, benchmarking capabilities, and sustainability reporting within the global hospitality sector. While larger, chain-affiliated hotels tend to benefit from full compliance, smaller independent hotels often struggle due to limited resources and the system’s complexity. The introduction of the 12th edition of USALI in 2024, which includes new Energy, Water, and Waste (EWW) metrics to promote sustainability, presents additional challenges for smaller hotels. Findings underscore the importance of USALI for benchmarking and management within hospitality units and highlight the need for future research into simplified, scalable USALI solutions. Such developments would make this management accounting system more accessible to smaller hotels and emerging markets, allowing them to realize its long-term financial benefits.
- Asymmetric connectedness among regional green economies, carbon markets, and oil shocksPublication . Hanif, Waqas; El Khoury, Rim; Gubareva, Mariya; Teplova, TamaraThis study investigates spillovers among the US, Europe, and Asia green economies, carbon allowances and oil price shocks in 2010–2023. We segregate oil shocks in demand-, supply-, and risk-driven price movements. The TVP-VAR methodology is applied to model the dynamic interrelationships among the markets. Our static connectedness outcomes highlight a substantial role of the US and European green economy and the demand-driven shocks as emitters of innovations to other markets. It is found that European green economy is the main innovations contributor to global carbon allowances whereas the demand-driven oil shocks dominate in transmitting spillovers to others. We demonstrate that major economic events make connectedness increase. Our asymmetry analysis reveals a heightened susceptibility of the system to negative news, with the impacts of negative spillovers overcoming those of positive ones. The dynamics of spillovers emphasize how crucial it is to take into account both the time and the sign. Our research advances understanding of the complex relationships within the green-carbon-oilshocks system. The results are potentially useful for risk managers and investors, as they allow the creation of effective risk management plans.
- Destinationscape: an integrated and holistic conceptualizationPublication . Bender, Ana Carolina; Agapito, Dora Lúcia Miguel; Martins Guerreiro, Maria ManuelaDestinations are growingly acknowledged as dynamic entities requiring strategic resource management to provide value for stakeholders. In this sense, to be recognized as desirable places to visit, to live or to invest in, with a harmonious integration among the stakeholders, it is imperative to frame destinations’ distinctiveness using the experience marketing perspective. Through a combination of an integrative literature review and an academic panel with diverse expertise, this conceptual research aims to conceptualize and depict the environmental features composing destinationscape as a construct, considering the dynamic interplay of multiple ‘scapes’. As a result, the proposed conceptual framework comprises five second-order and 17 first-order dimensions. This research is expected to contribute to the theory around destination experience and experiencescape by offering a comprehensive view, where destinationscape emerges from continuous interactions between the destination’s external environment and its stakeholders. Consequently, this research contributes to destination competitiveness and governance by conceptualizing and providing a framework around destinationscape.
- Modelling of childbearing progression among women living with HIV in Ibadan, NigeriaPublication . Akinyemi, Joshua O.; Afolabi, Rotimi; Awolude, Olutosin A.; OLAGUNJU, AHMEDBackground Childbearing is a major concern for women living with HIV especially in low-middle income countries. There are fears about access to care, risk of vertical transmission, health challenges, maternal and child morbidity/ mortality. Investigation of childbearing progression and its associated factors among these women will be useful for design of reproductive healthcare services of these women and ultimately address their multifaceted concerns. This study examined childbearing progression and its correlates another among women living with HIV in Ibadan. Method The study used a dataset from a cross-sectional study on childbearing progression among 933 respondents aged (18–49) receiving HIV care at the University College Hospital, Ibadan. Synthetic Relational Gompertz method was used to estimate fertility rate in the study population while a multistate model was developed to identify the factors associated with progression from one birth to the next. Results The average age of participants was 38 years, with majority being Yoruba tribe (80.5%). Nearly all had at least basic education (93%), and about half had 1–2 children at the time of their HIV diagnosis (47.6%). The likelihood of progressing from the first to a second birth was 77%, though no specific factors were statistically significant. However, progression to a third birth was significantly less likely (86% lower), and associated with factors such as: Having 1–2 children at HIV diagnosis (59% less likely to progress). Having more than 2 children at HIV diagnosis (94% more likely to progress), marital status (widowed women were 36% more likely to progress), partner’s education (secondary education increased the likelihood by 23%), partner’s employment status (unemployed partners increased the likelihood by 40%), desire for more children, partner’s HIV-negative status. Progression to fourth and subsequent births showed a continued decline, with the likelihood of a fourth birth being 82% lower and a fifth or sixth birth 85% lower. Women with secondary education were significantly less likely to progress to fifth births. Conclusion Overall, the corrected total fertility rate is 3.54, it’s below the national estimates and Southwest region which implies fertility is declining among women living with HIV in Ibadan. The findings revealed the relevance of socio-economic and demographic factors in childbearing progression among women living with HIV. Focused interventions should aim to provide better family planning support and integrate reproductive health counseling into HIV care programs.
- From host's descriptions to guests' reviews: semantic similaritiesPublication . Cavique, Mariana; Ribeiro, Ricardo; Batista, Fernando; Correia, AntóniaThis study investigates the semantic alignment between Airbnb property descriptions and guest reviews. Word2Vec embeddings and affinity propagation clustering are used to identify granular semantic concepts, enabling a detailed comparison of the two text types. A new metric, concept coverage ratio, is introduced to measure the extent to which the guest review content is reflected in property descriptions. Results show that a higher concept coverage ratio is generally associated with more positive sentiment in reviews, suggesting that better alignment between host and guest perspectives contributes to guest satisfaction. However, longer and detailed descriptions may limit the potential for pleasantly surprising guests, as it reduces the chance for positive disconfirmation. These findings offer practical insights for improving communication in peer-to-peer accommodation.