Objectives:This study explores the transformation of energy consumption in Europe between 2002 and 2022, focusing on the declining role of fossil fuels and the increasing significance of renewable and nuclear energy sources. The study also considers how countries with varying levels of economic development adopt different energy strategies and how these strategies correlate with shifts in energy usage. A circular economy approach that includes energy recovery from waste and resource reuse is a complementary aspect of sustainable energy transitions. Methods/Analysis: The per capita energy consumption data were analyzed through decile classification and cluster analysis to group countries with similar energy profiles. To explore the relationship between GDP and energy use—both total and renewable—linear and exponential regression models were applied. Outlier countries with atypical consumption trends were excluded to improve model reliability. Statistical analyses were conducted using SPSS, and Excel was used to support the visualization process. Findings: Six distinct clusters of energy consumption patterns emerged. In lower- and middle-GDP countries, renewable energy use showed a stronger exponential correlation with GDP growth than total energy use. While fossil fuel dependence has declined across most countries, the pathways taken have been diverse. High-GDP nations such as Iceland and Norway have demonstrated unique, resource-driven strategies. Novelty/Improvement: This study introduces a novel methodological blend of decile-based classification and clustering to enable clearer cross-country comparisons of energy use. The results also highlight the importance of excluding statistical outliers to improve regression precision. By integrating insights relevant to circular economy principles, the findings contribute to designing more effective and regionally adapted energy transition strategies.

Generational differences shape technological preferences and fundamentally influence workplace motivation and interactions. Our research aims to examine in detail how different generations assess the importance of workplace communication and leadership styles and how these diverse preferences impact workplace motivation and commitment. In our analysis, we studied the behavioral patterns of four generations—Baby Boomers, Generations X, Y, and Z—through anonymous online questionnaires supplemented by in-depth interviews conducted with a leader and a Generation Z employee. To verify our hypotheses, we employed statistical methods, including the Chi-Square test, Spearman’s rank correlation, and cross-tabulation analysis. Our results clearly demonstrated that different generations evaluate the importance of applied leadership and communication styles differently. While Generations Y and Z highly value flexible, supportive leadership styles, older generations, such as the Baby Boomers prefer more traditional, structured approaches. The study confirmed that aligning leadership and communication styles is crucial, as it significantly impacts the workplace atmosphere and employee performance. Our research findings hold both theoretical and practical significance. This research highlights how understanding generational preferences in leadership and communication styles can enhance workplace cohesion and efficiency. The results provide specific guidance for leaders and HR professionals to create a supportive and adaptable environment that effectively meets the needs of diverse generations.

Purpose: The central research question of the study is how objective financial knowledge and subjective financial confidence interact and relate to digital financial behavior and the use of FinTech tools. By examining both objective knowledge refers to measured, test-based financial competence and subjective confidence denote self-assessed financial understanding, the research offers insight into the psychological and demographic drivers of FinTech use and perceived financial well-being. Design/methodology/approach: Based on the OECD’s 2023 international financial literacy survey, the study uses a nationally representative Hungarian sample. It employs non-parametric statistical methods, linear regression, and two-step cluster analysis. Three composite indicators, general digital activity, digital financial engagement frequency, perceived financial security were developed to measure general digital activity, frequency of digital financial engagement, and perceived financial security. Findings: Results reveal a moderate but significant correlation between actual and self-assessed financial knowledge. Men score higher on both measures, though self-assessment bias does not significantly differ by gender. Higher education and income levels are associated with stronger financial literacy and more frequent use of FinTech tools, while age correlates negatively. However, the accuracy of self-perception is not explained by these demographic factors. Cluster analysis identifies four distinct financial knowledge profiles and five consumer digital behavior types, revealing disparities in digital financial inclusion and confidence. Originality: This research contributes a multidimensional perspective on how consumer capabilities, attitudes, and digital behavior influence FinTech adoption. By integrating behavioral, demographic, and psychological factors, the study offers practical implications for targeted financial education and the design of inclusive, human-centered digital financial services—especially relevant for emerging European markets.

Objective: This study investigates resource productivity by exploring the factors that influence it and the strength of their impact using sustainability statistics from Eurostat. Theoretical Framework: The research analyzes the interdependence between national income and material consumption, with a focus on the paradoxical effects of circular material use on these variables. Method: Data from bibliographic sources are analyzed using statistical methods, including regression and path models, to assess the relationships between material consumption, national income, and the use of circular materials. Results and Discussion: The study concludes that national income and material consumption are interdependent, with material consumption directly affecting national income. Notably, the use of circular materials, contrary to expectations, increases material use and decreases national income. The cases of Hungary and the Netherlands are specifically examined to illustrate these findings. Research Implications: The findings suggest that strategies to increase resource productivity and sustainability performance need to consider the complex and sometimes counterintuitive impacts of circular material use on national income and material consumption. Originality/Value: This study provides new insights into the relationship between resource productivity, national income, and material consumption, highlighting the unexpected effects of circular material use. It contributes to the broader understanding of sustainability performance, particularly in the context of Hungary and the Netherlands.

Objective: This study investigates resource productivity by exploring the factors that influence it and the strength of their impact using sustainability statistics from Eurostat. Theoretical Framework: The research analyzes the interdependence between national income and material consumption, with a focus on the paradoxical effects of circular material use on these variables. Method: Data from bibliographic sources are analyzed using statistical methods, including regression and path models, to assess the relationships between material consumption, national income, and the use of circular materials. Results and Discussion: The study concludes that national income and material consumption are interdependent, with material consumption directly affecting national income. Notably, the use of circular materials, contrary to expectations, increases material use and decreases national income. The cases of Hungary and the Netherlands are specifically examined to illustrate these findings. Research Implications: The findings suggest that strategies to increase resource productivity and sustainability performance need to consider the complex and sometimes counterintuitive impacts of circular material use on national income and material consumption. Originality/Value: This study provides new insights into the relationship between resource productivity, national income, and material consumption, highlighting the unexpected effects of circular material use. It contributes to the broader understanding of sustainability performance, particularly in the context of Hungary and the Netherlands.