1. Analysis of the Effect of Eco-Efficiency on Asset Return in Food and Beverage Manufacturing Companies Listed at the Johannesburg Stock ExchangeDimakatso Hellen Malapa, Collins C. Ngwakwe, 2025, original scientific article Abstract: This article examines the effect of eco-efficiency on corporate return on assets (ROA). The paper aimed to analyse whether corporate eco-efficiency performance (represented by energy consumption, water consumption, carbon emission and waste generation) affects the performance of ROA. Data on the eco-efficiency and ROA was collected from fourteen food and beverage companies listed in the Johannesburg Stock Exchange for a period of ten years (2012 to 2021). Using the STATA Software, the data was analysed by applying the Generalised Method of Moment (GMM) statistical technique, which enhanced the statistical analysis robustness. Findings from the GMM analysis showed different results. On the one hand, the results indicate that energy and water consumption in the food and beverage companies have a positive (but insignificant) effect on ROA. On the other hand, the results show that waste generation has a negative (but insignificant) effect on ROA; and that carbon emission has a negative and significant effect on ROA.
Keywords: environmental accounting, return on assets, financial performance, eco-efficiency, energy consumption, water consumption, carbon
emission, waste generation, sales revenue
Published in RUP: 18.12.2025; Views: 161; Downloads: 0
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2. Revolutionizing Hotel Operations with AI: A Case Study on the Power of ChatGPT and Gemini IntegrationPongsakorn Limna, Tanpat Kraiwanit, Tanatorn Tanantong, Todsanai Chumwatana, 2025, original scientific article Abstract: This study investigates the implementation and impact of ChatGPT and Gemini in a four-star hotel in Ao Nang, Krabi, Thailand, during January–February 2024. Through a mixed-methods approach combining quantitative analysis and qualita-tive insights, the research assessed operational metrics across multiple service areas and gathered detailed feedback from the hotel owner. The study revealed significant improvements in operational efficiency, with check-in processing times decreasing from 3.3 to 2.7 minutes and AI system adoption increasing from 82% to 93%. Gu-est satisfaction scores showed notable enhancement, with overall satisfaction rising from 4.6 to 4.8 out of 5. The AI systems demonstrated impressive multilingual ca-pabilities, handling 28 languages with 98.7% accuracy, while document processing achieved 99.2% accuracy across various types. Internal communications benefited from 32% time savings, with efficiency rates exceeding 96% across all categories. Staff adaptation, though initially challenging, was successfully managed through comprehensive training and gradual implementation, resulting in improved job satisfaction and team collaboration. The findings provide empirical evidence that strategic AI integration can enhance both operational efficiency and guest satisfa-ction while complementing human service elements. This research contributes va-luable insights for hospitality managers considering AI implementation and offers a practical blueprint for successful technology integration in the hospitality sector, while also highlighting areas for future research in different hotel categories and geographical contexts.
Keywords: AI integration, ChatGPT, Gemini, hospitality, operational efficiency
Published in RUP: 16.12.2025; Views: 152; Downloads: 0
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5. Energy retrofitting opportunities using renewable materials-comparative analysis of the current frameworks in Bosnia-Herzegovina and SloveniaDarija Gajić, Slobodan Peulić, Tim Mavrič, Anna Malgorzata Sandak, Črtomir Tavzes, Milica Malešević, Mladen Slijepčević, 2021, original scientific article Keywords: legal framework, developing countries, existing building stock, energy efficiency, energy consumption, timber, renewable materials
Published in RUP: 04.02.2021; Views: 3684; Downloads: 74
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6. Subsidies, enterprise innovativeness and sustainable growthSabina Žampa, Štefan Bojnec, 2015, published scientific conference contribution Keywords: podjetništvo, financiranje, subvenije, inovativnost, ekonomska učinkovitost, finančna učinkovitost, trajnostni razvoj, subsidies, enterprise innovativeness, economic-financial efficiency of enterprises, sustainable development
Published in RUP: 03.04.2017; Views: 3817; Downloads: 77
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7. R&D and education resources in innovation processes : evidence from Slovenia and the Visegrad GroupMitja Ruzzier, Tanja Kosi, Doris Gomezelj Omerzel, 2016, original scientific article Abstract: This article provides a cross-country analysis of the efficiency and effectiveness of innovation processes in the European Union countries, with a focus on Slovenia and the four countries of the Visegrad Group (the Czech Republic, Hungary, Slovakia and Poland). By examining relationships between different composite innovation indicators, our study reveals patterns in the input-output-outcome relationships at different stages of the innovation process and highlights country-specific bottlenecks and possible efficiency gains in the use of R&D and education resources. Benchmarking the effectiveness and efficiency of innovation systems and processes across selected countries is valuable for different target groups, to whom we offer insights into the R&D environment, barriers to technology transfer and possible improvements in innovation policies.
Keywords: R&D, education, innovation, efficiency, European Union, effectiveness
Published in RUP: 08.08.2016; Views: 3682; Downloads: 151
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8. Regulatory dimensions of social entrepreneurship in SloveniaBenjamin Lesjak, Dušan Lesjak, 2015, published scientific conference contribution abstract Keywords: socialno podjetništvo, socialno podjetje, ureditev, zakonodaja, učinkovitost, social entrepreneurship, social enterprise, regulatory environment, legislation, efficiency
Published in RUP: 14.10.2015; Views: 5761; Downloads: 102
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9. Subsidies, enterprise innovativeness and sustainable growthSabina Žampa, Štefan Bojnec, 2015, published scientific conference contribution abstract Keywords: podjetništvo, financiranje, subvenije, inovativnost, ekonomska učinkovitost, finančna učinkovitost, trajnostni razvoj, subsidies, enterprise innovativeness, economic-financial efficiency of enterprises, sustainable development
Published in RUP: 14.10.2015; Views: 4056; Downloads: 81
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10. Efficient energy use and renewable sources of energy in SloveniaŠtefan Bojnec, Drago Papler, 2011, original scientific article Abstract: This paper presents unique survey results with opinions on the competitive supply and efficient energy use, sources of energy and renewable sources of energy. The multivariate factor analysis with three common factors confirms the significance of the price competitive supply of energy, energy costs for the economy, and the sustainable energy supply development and ecological perception in the energy use. Among renewable sources of energy, significance is given to the solar, hydro, biogas, and biomass energy, where the energy useand the renewable energy production in agriculture can play a greater role. Education and promotion activities are expressed as important for strengthening the knowledge, awareness, and social responsibility of the sustainable energy development and the use of renewable sources of energy.
Keywords: energy, efficiency, renewable sources, operation management, sustainability, social responsibility
Published in RUP: 15.10.2013; Views: 5690; Downloads: 201
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