26 documents found, page 1 of 3
Municipal solid waste generation in Algarve, Portugal: Challenges of seasonal t...
Magro, C.; Roseta-Palma, C.; Dionísio, J.; Mota, J.; Almeida, C. R. de.; Cardadeiro, E.Regions with strong tourism seasonality, like Portugal’s Algarve, face major challenges in municipal solid waste (MSW) management. This study quantifies tourism-induced waste using data from 2017–2024, in collaboration with Algar, the regional MSW utility. In 2024, the Algarve experienced six times more overnight stays in high season than low season, accounting for 25% of Portugal’s total. Yet only 9 of its 16 ...
Dealing with endogeneity in stochastic frontier models: A comparative assessmen...
Zheng, H.; Ramalho, J. J. S.; Roseta-Palma, C.Endogeneity poses a major challenge for Stochastic Frontier Analysis, as input choices may be endogenous to unobserved components of the error term, resulting in biased efficiency estimates. This paper compares leading estimators that address this issue, including control-function estimator (Kutlu, 2010), Generalized Method of Moments (GMM) (Tran and Tsionas, 2013) and copula (Tran and Tsionas, 2015) approaches...
Can operational efficiency in the Portuguese electricity sector be improved? Ye...
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Efficiency has long been an issue of concern in the electricity sector. Most existing studies relate technical efficiency in electricity generation to policy factors while that in transmission and distribution is associated with environmental factors. Although firm operation is also a relevant perspective on this topic, its explicit impact upon technical efficiency has rarely been studied. In order to analyze t...
Rewilding with the beaver in the Iberian Peninsula - Economic potential for riv...
Veríssimo, D.; Roseta-Palma, C.Nature restoration is essential to tackle the loss of biodiversity and to adapt and mitigate the effects of climate change. Recently the United Nations declared 2021 - 2030 the decade for the Restoration of Ecosystems, while the European Union 2030 Biodiversity Strategy includes restoration as a core pillar. Rivers and streams are a key component of ecosystems, yet many are in poor ecological condition. The Por...
Encouraging household waste separation: Can social comparison help?
Cardadeiro, E.; Roseta-Palma, C.; Laneiro, T.As more people move to urban areas, larger flows of solid waste are generated, bringing about significant challenges in municipal solid waste management. Implications of management failure can be serious for human health and for the environment, and landfills are not a sustainable solution. European legislation makes it clear that business-as-usual is not good enough and sets ambitious targets for the coming ye...
Introduction to sustainability as a transversal competence in higher education
Belchior-Rocha, H.; Ramalho, V.; Roseta-Palma, C.Sustainability in higher education institutions is little discussed, but there is a large amount of literature that mentions its importance for the awareness of all those who frequent their spaces, whether they are teachers, employees, or students. The understanding, by the human being, of the complex nature of the environment and the perception of the interdependence of the environmental elements in space and ...
Does directed technological change favor energy? Firm-level evidence from Portugal
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Economic performance is closely related with energy consumption, the major part of which still comes from non-renewable sources. While endeavoring to promote renewable energy, policy makers are interested in technological change that also increases energy efficiency. However, both growth models of directed technological change and microeconomic theories regarding innovation suggest that technological change is ...
Directed technological change, energy and more: a modern story
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Reliance of modern economic activities on the use of energy, most of which still comes from non-renewable sources, provokes concerns regarding the most efficient utilization of energy inputs in production. While most theory expects directed technological change to be biased towards the non-renewable input, there is rare macro-level evidence that technological change is actually biased towards energy rather than...
Psychosocial and economic impacts of a charge in lightweight plastic carrier ba...
Luís, S.; Roseta-Palma, C.; Matos, M.; Lima, M. L.; Sousa, C.Reducing plastic waste has become an urgent global challenge. To help fight this problem, European countries have undertaken the mission to reduce lightweight plastic bag consumption. In 2014, Portugal implemented a charge on lightweight plastic bags, calling for an adjustment from both consumers and firms. The present re- search aims to study the psychosocial and economic impacts of this tax measure, namely in...
Downside risk in reservoir management
Roseta-Palma, C.; Yiğit SağlamDownside risk, which refers to deviations below a threshold, is often important in water management decisions, especially in areas with large and skewed variations in precipitation patterns. In this paper, we present a model for a reservoir manager who is downside risk averse and who performs a dynamic allocation of irrigation water, taking into account the negative effects of droughts on farm profits and diffe...