The impact of climate change is increasingly evident in various domains today and is gaining prominence in scientific inquiries. Climate change also affects the utilisation of renewable energies. The article examines the effects of 21st-century climate change on the annual electric energy production of medium-sized photovoltaic module systems. The study bases its analysis on three possible scenarios: a pessimistic (RCP 8.5), a less pessimistic (RCP 4.5), and an optimistic (RCP 2.6) scenario. The applied Representative Concentration Pathways (RCP) scenarios were developed by the Intergovernmental Panel on Climate Change (IPCC) to enhance comparability in analyses related to climate change. Compared to older linear models, an innovation utilises a more flexible and multidirectional model. One of the article’s key findings is that, for all three examined settlements, the annual yield of the studied photovoltaic systems will surpass the levels of the base year 2010 by the middle and end of the century. Another significant outcome is that, under the three scenarios analysed, the ratio of annual performance variation to annual global radiation variation shows substantial differences by the middle and end of the century compared to the 2010 baseline. In the optimistic scenario, this ratio exceeds 1, whereas in the pessimistic and less pessimistic scenarios, it falls below 1. This ratio does not directly inform about the annual production—which increases in all cases—but rather about the changes in efficiency. These efficiency changes are influenced by the rise in annual average temperatures and the fluctuation in sunny hours yearly. The third finding reveals that under the climate change pessimistic scenario (RCP 8.5), the efficiency decrease is less adverse than in the less pessimistic scenario (RCP 4.5).

Foreign direct investment (FDI) is one of the most important elements influencing countries' international economic integration. FDI establishes direct, consistent, and long-lasting interconnections between economies as well as encouraging innovative technology and know-how transmission across territories while allowing host economies to offer their goods more extensively on global markets. FDI is also a source of investment financing that creates the climate for appropriate policies. Aside from the obvious advantages for all economic sectors, attracting FDI in small and midsize enterprises (SMEs) has a variety of additional benefits. For example, an opportunity to participate in the global supply chain for parts and components; an opportunity not yet wholly established in most developing nations but is critical for industrialization and improving income distribution through job creation for low-skilled employees. This study compared the impact of FDI on the performance of SMEs in Vietnam to that of a group of ASEAN nations with comparable economic structures including Indonesia, Malaysia, and Thailand. The empirical evidence indicates that FDI has a negative effect on the performance of SMEs in the group of four ASEAN member countries while having a positive influence on Vietnamese SMEs.

The research presents an analysis of the food security policy effectiveness on the component of food availability and access in two developing countries, Colombia and Kyrgyzstan, during the period from 2000 to 2018. Determining the state of their food balance trade and the regression analysis for the Food Production Index of the countries, considering four economic indicators. Thus the study attempts to show that policies and strategies have not reached the expected results in terms of reduction of food imports dependency and strengthening of national production and export industry. Furthermore was found that among the economic indicators considered, food inflation, food imports, food exports, and extreme monetary poverty; the last one was the indicator that presented influence on the Food Production Index of both countries, during the period analyzed, showing that access was the main component that defines the food production. The results highlighted the need of integrating food security with the monetary and trade policies of these countries.

Public acceptance is a key prerequisite for renewable energy deployment, yet evidence from post-socialist, energy import-dependent countries remains limited, and acceptance is often treated as a single construct. This study examines Hungary and distinguishes between (i) general societal support for renewable energy and (ii) individual-level commitment to adoption. Using an online survey conducted in October–November 2024 (N = 417), we test for an acceptance gap and assess attitudinal drivers with paired-sample t-tests, OLS regression, and cluster-based comparisons. Results show a significant acceptance gap: general societal support exceeds individual-level commitment (mean difference = 0.17 on a three-point scale; Cohen’s d = 0.36; p < 0.001). In bivariate terms, perceived economic benefits exhibit only a weak association with acceptance, but in multivariate models they emerge as a strong predictor of individual-level commitment (β = 0.600; R² = 0.407), whereas environmental attitudes and energy security perceptions show weaker and non-significant independent effects. Cluster analysis further indicates heterogeneous attitudinal profiles and varying levels of acceptance, suggesting that economic evaluations operate as an enabling dimension within broader attitudinal configurations rather than a standalone driver. These findings highlight why broad societal endorsement may not translate into personal engagement and imply that policy strategies should complement general pro-renewable narratives with measures that address perceived feasibility and individual-level costs and uncertainties.