This study employs Fully Modified Ordinary Least Squares, Common Correlated Effects and Dumitrescu-Hurlin panel causality techniques to investigate the environmental impacts of nuclear energy generation in European Union countries from 1990 to 2022. The ongoing debate within the European Union and the empirical contradictions in the literature, coupled with the overall singular-dimensionality surrounding the impacts of nuclear energy on the environment, necessitate a broader and comprehensive examination of its effects across various environmental dimensions. These dimensions include the presence of CO2 emissions and the ecological footprint generated. The findings reveal that nuclear energy adoption by countries tends to affect CO2 emissions but this relationship goes from CO2 to nuclear energy consumption as per the causality test, while the ecological footprint variable does not exhibit a causal relationship with nuclear energy consumption. We estimated that a higher presence of air pollutants promotes the generation of nuclear energy as an alternative to fossil fuel energy sources. The study highlights that while nuclear energy generation produces no air pollution, it does impose significant land use requirements, potentially leading to ecosystem degradation. Factors such as uranium extraction, nuclear waste management, disposal, and accidents contribute to this impact. Further research is needed to understand the specific mechanisms and factors contributing to the observed environmental degradation associated with nuclear energy generation.

The concept of leadership is complex and has been studied from multiple approaches, especially from the psychological field and from the field of management. Small businesses created as way of subsistence for the entrepreneur and their family present a limited leadership. The cultural traditions of the forestry industry are based on the culture and indigenous know-how of the territory, especially affecting small timber businesses, the small businesses working in timber activities. This paper analyzed the interrelation between culture and leadership in the process of generating performance from sustainable competitive advantages using partial least squares (PLS) techniques. The results show that culture and leaderships are sources of competitive advantage in subsistence small businesses, but culture does not generate competitiveness directly; an organizational culture needs to act through entrepreneurial leadership.

Intellectual capital is defined as the set of intangible assets that generate value for the company. Normally, the models that measure the intellectual capital make use of investments in intangible assets, as indicators of the generation of value by the company; or are based on a holistic measure, using another focus to validate. This research proposes a new method to measure intellectual capital, reconciling the use of financial measures for the management of intellectual capital and its antecedents in triangulated indices; it also determines relationship path coefficients, between constructs developed from a general conceptual model, based on the academic and professional literature. The proposed method combines component indicators with holistic indicators using a structural equation model, allowing differentiating the components of intellectual capital from the stock of intellectual capital. The method is applied to more than 1,600 European companies from 2004 to 2015 to assess its validity, presenting the monetary value of intellectual capital in these companies. The results allow a comparison of the situation of intellectual capital in companies in different countries and industries, opening an opportunity to disclosure intellectual capital.

The COVID-19 crisis experienced since early 2020 has been the first time in decades that all the boundaries between European Union member-states have been systematically re-set. This paper examines the economic impact derived from re-establishing the boundary on a particular cross-border region located between Galicia (Spain) and Portugal. The paper begins by outlining the theoretical considerations on the interplay between borders and economy. After examining the case-study area and the decisions taken by the Spanish and Portuguese authorities in an attempt to control the spread of the virus in 2020, the article explains the methods used to obtain the results. Two sets of results are presented. Firstly, the direct consequences for cross-border economic activities are considered. Secondly, the fall in Gross Domestic Product is quantified for sectors and municipalities in the cross-border region, distinguishing between, on the one hand, the overall effect caused by the restrictions due to the lockdown situation and, on the other, the precise impact attributed to the re-establishment of the international boundary. This is a worthy addition to previous literature given that this paper details the specific economic effects caused by the COVID-19 crisis in a cross-border region directly affected by the boundary closure.