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Item Sustainable production of graphene oxide and zinc oxide nanoparticles from spent Zn-C batteries(University of Belgrade, Technical Faculty in Bor, 2025) Stanković, Sonja; Nedelkovski, Vladan; Radovanović, Milan; Đorđievski, Stefan; Medić, Dragana; Milić, SnežanaZinc-carbon (Zn-C) batteries are the primary cells [1] used in numerous portable electronic devices worldwide due to their low cost, good durability and simple production technology [2,3]. The Zn-C battery contains graphite as the cathode, a mixture of manganese dioxide and carbon moistured with NH4Cl/KCl as the electrolyte and a zinc container as the anode [4]. Since spent Zn-C batteries cannot be recharged and their proper storage is very expensive, spent Zn-C batteries are usually disposed of directly in landfills [5]. The improper disposal of Zn-C batteries in the environment not only leads to waste of Zn, Mn and C resources [6], but also to environmental pollution [3,7]. Recently, numerous research teams have focused their attention on recycling Zn-C batteries as an optimal solution to reduce the amount of waste, protect natural resources, the environment and human health [1,3-5,8].Item Kinetic analysis of copper ions adsorption on sunflower hulls(University of Belgrade - Technical Faculty in Bor, 2025) Marković, Marina; Gorgievski, Milan; Marković, Miljan; Grekulović, Vesna; Štrbac, Nada; Božinović, Kristina; Zdravković, MilicaThis paper presents the kinetic analysis of the adsorption process of copper ions on sunflower hulls. Three theoretical kinetic models were used to analyze the experimental results: the pseudo-first order kinetic model, the pseudo-second order kinetic model and the Elovich kinetic model. The results showed that the pseudo-second order kinetic model is the best fit for the analyzed data.Item Assessment of element accumulation efficiency in plant parts using biological factor analysis(University of Belgrade - Technical Faculty in Bor, 2025) Kalinović, Jelena; Kalinović, Tanja; Radojević, Ana; Šerbula, Snežana; Jordanović, JelenaUnderstanding the processes of accumulation and translocation of potentially toxic elements through the soil-plant system is crucial for environmental protection and pollution risk assessment. The aim of this study is to investigate the possibility of accumulation and translocation of potentially toxic elements in Crataegus spp. and to assess the applicability of this plant species in phytoremediation.Item Failure mode and effects analysis–analytic hierarchy process (FMEA-AHP) model in supplier risk management(Infopro Digital Services, 2025) Panić, Marija; Que, XiaojunRisk management is a crucial process that enables organizations to identify, assess and manage risks that could potentially impact their goals and operations. This paper uses the failure mode and effects analysis–analytic hierarchy process (FMEA–AHP) risk model to identify and manage supplier risks in a mining firm. First, the FMEA approach is used to identify and evaluate the supplier’s risks and to determine the risk priority. Then the AHP is used to suggest several potential solutions for reducing the risks that identified by the FMEA, with each solution being evaluated based on several criteria. Validation of the risk model in this paper confirmed that it can help managers develop risk management plans and select the best course of action. The approach in this paper provides an enterprise risk management model that is universally applicable and adaptable, no matter the type of risk or the size or activity of the company.Item Applying the COPRAS method for metaheuristic algorithm selection: The case of the economic dispatch problem(Obuda University, Keleti Faculty of Business and Management, Budapest, Hungary, 2025) Gajić, Milena; Arsić, SanelaIn recent literature, an increasing number of metaheuristic algorithms have been proposed for solving individual optimization problems. One such complex problem, widely studied and addressed with various algorithms, is the economic dispatch problem. Hence, this paper aims to establish a systematic approach for selecting the most suitable metaheuristic algorithm by employing the COPRAS (COmplex PRoportional ASsessment) method, a multi-criteria decision-making (MCDM) technique. The proposed methodology is applied to evaluate and rank five metaheuristic algorithms (MSA, FA, PSO, PSOGSA, and PSOCGSA) across four variants of the economic dispatch problem. The assessment considers multiple performance metrics, including best-obtained results, standard deviation, mean values, error rates, computation time, and convergence behaviour. To ensure the reliability of the ranking, the results were further validated using the EDAS method, confirming the robustness of the selection process. This study provides a structured framework for algorithm recommendation, aiding researchers and practitioners in choosing the most effective optimization approach for similar complex problems.Item Tracing the development of platform economy research: key trends and insights(Obuda University, Keleti Faculty of Business and Management, Budapest, Hungary, 2025) Arsić, Sanela; Stojanović, Anđelka; Milošević, IsidoraIn recent years, the platform economy has transformed how individuals share and conduct transactions in digital spaces. This phenomenon has attracted scholars from various diverse fields and disciplines into an emerging research area. This study aims to explore the trends and key insights in the literature on the platform economy through a bibliometric approach. The analysis includes research articles published between 2000 and 2024 on the platform economy. Using publications available on the Web of Science, this study identifies influential journals, institutions, landmark papers, and citation bursts. In addition to researchers in management, business, and economics, scholars from sociology, communication, law, and computer science are increasingly contributing to platform economy research. The findings reveal that the focus of platform research has evolved over time. This research will serve as a basis for future discussions on the crucial roles played by digital platforms in the platform economy.Item E-commerce in the digital age: empirical evidence from Serbia(University of Belgrade, Technical Faculty in Bor, 2025) Arsić, SanelaElectronic commerce or e-commerce has become integral to the contemporary business landscape. Organizations widely adopt e-commerce technologies to enhance efficiency and gain a competitive edge. As one of the crucial driver of economic growth, adopting e-commerce is essential for developing countries to promote their prosperity and contribute to sustainable economic development. The factors influencing e-commerce are diverse, and understanding them is vital for businesses aiming to thrive in this competitive digital landscape. Therefore, this study aims to identify the factors that impact consumers' online repurchase intentions. Employing quantitative methods, including partial least squaresstructural equation modeling (PLS-SEM) and fuzzy set qualitative comparative analysis (fsQCA), the research analyses survey data from Serbia. This study contributes to the literature by offering new insights into the relationship among the predictors of online shopping behaviour and advancing the theoretical ground of how site quality, customer satisfaction, trust and commitment combine to explain high repurchase intentions better. The findings provide deeper insights into priority areas for strategic improvements in adopting e-commerce services and pave the way for future research.Item An integrated PLS-SEM-TOPSIS-Sort approach for assessing ERP solutions acceptance across various industries(MDPI, 2025) Radić, Aleksandra; Bobek, Samo; Arsić, Sanela; Nikolić, Ðorđe; Sternad Zabukovšek, SimonaIn the context of accelerated digitalization, enterprises are increasingly adopting information-driven solutions to support managerial decision-making, with Enterprise Resource Planning (ERP) systems playing a crucial role in organizational development. Despite its importance, ERP adoption varies significantly across industries, particularly between developed and developing economies, where technological and structural differences persist. This paper proposes and validates a classification framework for assessing industry readiness for ERP adoption, based on an integrated PLS-SEM-MCDA methodological approach. PLS-SEM identified statistically significant factors and transformed them into weights to compare ERP user attitudes across eleven industries in Serbia and Slovenia. In addition, the TOPSIS-Sort method classified industries into high, moderate, and low readiness as predefined order classes. Finally, sensitivity analysis and comparative analysis are performed with AHP expert weights and the PROMETHEE-FlowSort method to determine the robustness of the PLS-SEM-TOPSIS-Sort results. The results show that the IT industry is the most consistent in adopting ERP systems. In contrast, other industries exhibit varying levels of readiness, depending on their degree of digital maturity and organizational preparedness. The proposed framework’s methodological flexibility allows it to be adapted to various contexts, making it suitable for future academic research and comparative studies. Additionally, the practical implications of the research are twofold. For ERP suppliers, the findings provide guidance on how to approach market segmentation and strategic positioning tailored to the specific needs of individual industries. For ERP users, their success in ERP adoption can be amplified by using the research insights as a benchmarking model.Item Recycling and Sustainable Development(Univerzitet u Beogradu, Tehnički fakultet u Boru, 2024) Trumić, Milan; Trumić, Maja; Tot, BojanaItem Recycling and Sustainable Development(Univerzitet u Beogradu, Tehnički fakultet u Boru, 2023) Trumić, Milan; Trumić, Maja; Tot, BojanaItem Recycling and Sustainable Development(Univerzitet u Beogradu, Tehnički fakultet u Boru, 2022) Trumić, Milan; Trumić, Maja; Stanisavljević, NemanjaItem Recycling and Sustainable Development(Univerzitet u Beogradu, Tehnički fakultet u Boru, 2021) Trumić, Milan; Trumić, Maja; Stanisavljević, NemanjaItem Recycling and Sustainable Development(Univerzitet u Beogradu, Tehnički fakultet u Boru, 2020) Trumić, Milan; Trumić, Maja; Stanisavljević, NemanjaItem Flotacija(Univerzitet u Beogradu - Tehnički fakultet u Boru, 2025) Trumić, Maja S.Udžbenik predstavlja osnovni univerzitetski udžbenik namenjen pre svega studentima ali i svim naučnim radnicima i stručnjacima u oblasti flotacije, postdiplomcima i istraživačima koji kroz svoje master radove ili doktorske disertacije izučavaju fenomene ili zbivanja vezana za flotiranje. Takođe, može biti od koristi i svima kojima je stručno opredeljenje flotacija, da osete i razumeju u kojoj meri postavke u teoriji flotiranja mogu da im pomognu u rešavanju određenih problema u industrijskim procesima flotiranja.Item From awareness to action: Ranking EU countries by consumer readiness to adopt sustainable products using a hybrid M-M methodology(University of Belgrade - Technical Faculty in Bor, 2025) Stojanović, Anđelka; Djordjević, Predrag; Shapkova Kocevska, Katerina; Tambovceva, TatjanaIn light of growing economic, environmental and sustainability challenges, increasingly more attention from policymakers, companies and researchers is being devoted to consumption patterns and understanding the factors that shape consumer behavior. The adoption of sustainable products within the European Union is actively promoted through a series of policies and initiatives aligned with the principles of the circular economy, to provide consumers with more transparent and accessible information, thereby empowering them to make eco-friendly choices. Nevertheless, consumer acceptance of sustainable products appears to vary considerably and is influenced by complex interactions among diverse factors. This study examines consumer readiness for sustainable products across twenty-seven EU countries using nine indicators across three dimensions: environmental awareness, financial readiness and trust in institutional sustainability mechanisms. A hybrid MEREC–MARCOS methodology was employed for ranking countries. This novel methodological approach allows for a detailed cross-country comparison and identification of areas for improving policies that incentivize sustainable consumption across the EU. Sweden emerges as the top-ranked country, followed by Cyprus and the Netherlands, while Latvia and Estonia rank lowest. The results suggest considerable divergence among EU Member States and potentially offer valuable insight into gaps in sustainable consumer behavior.Item Analyzing the impact of corporate social responsibility on employee satisfaction using a hybrid SEM-ANN approach(MDPI, 2025) Stojanović, Anđelka; Arsić, Sanela; Milošević, Isidora; Mihajlović, Ivan; Spasojević Brkić, VesnaIn the conditions of modern market dynamics, corporate social responsibility (CSR) is increasingly evolving from a formal ethical principle into a powerful strategic instrument, key to achieving sustainable growth and long-term competitive advantage. Companies that integrate CSR into their business not only affirm the values of social responsibility, but also position themselves as reliable and ethically oriented actors, thereby winning the trust of investors, motivating employees and building a stable base of loyal consumers. Hence, the aim of this research is to determine, through empirical analysis, to what extent and in what way individual aspects of corporate social responsibility influence employee perception and satisfaction, as well as to develop a predictive model of their mutual connection. The specific hybrid SEM-ANN methodology in the CSR field was applied to obtain more precise results than standard data analysis methods, which fulfilled the literature gap in this research field. The detailed hypotheses designed were empirically tested using SEM methodology and indicated a positive association between the social and stakeholder aspects with employee satisfaction. These outcomes were confirmed by the results of the ANN models. The findings obtained are not only theoretical, but also have a useful application in the real business environment, which is reflected in the development of strategies that can serve as a road map for organizations in achieving employee satisfaction. This could lead to a change in organizational culture with an emphasis on ethical business and greater responsibility towards society and stakeholders.Item Analysis of the energy potential of briquettes made from ground plum, date, and avocado pits(University of Belgrade - Technical Faculty in Bor, 2025) Grozdanović, Milan; Jovanović Pešić, Živana; Djoković, Jelena; Tanikić, DejanThis paper presents an analysis of the energy potential of briquettes made from ground plum pits. The higher and lower calorific values of briquettes produced from ground plum pits were determined experimentally. To assess the energy potential more comprehensively, the heat values of briquettes made from date and avocado pits were also determined. Based on the results presented, briquettes made from date pits have an average calorific value of around 19 MJ/kg, placing them in the same range as certain types of wood. Plum pit briquettes exhibit even higher energy potential, exceeding 21 MJ/kg, while avocado pit briquettes show a slightly lower value, around 16 MJ/kg. The results indicate that briquettes made from plum, date, and avocado pits possess notable energy potential, though sample preparation is essential to achieve maximum efficiency.Item Praćenje rudarske eksploatacije u cilju smanjenja negativnog uticaja na životnu sredinu(Udruženje Građanska uprava, Medveđa, Srbija, 2025) Dragović, Njegoš; Filić, Olivera; Bogdanović, DejanSrbija ima dugu istoriju rudarstva, dok se ograničene količine javljaju kao smetnje i to najčešće zbog nedovoljnog istraživanja potencijala. Na teritoriji Srbije ima dosta mineralnih resursa, kao što su metali, plemeniti i obojeni. Kroz tri perioda smo posmatrali razvoj rudarstva u Srbiji, od II svetskog rata do 1980-ih godina, od 1990-ih do ranih 2000-ih i od sredine 2000-ih do danas. Izvršena je reonizacija rudarskih eksploatacija u Srbiji na istočni, centralni i južni region. Sve ove segmentacije rudarskih aktivnosti dopirneće praćenju eksploatacija ruda kako bi se smanjio negativni uticaj na životnu sredinu. U radu se analiziraju najveći problemi koji utiču na životnu sredinu, sa posebnim osvrtom na južni region, tj. Jugoistočnu Srbiju.Item Evaluating transatlantic cruise service quality: An integrated SERVQUAL and ipa approach(University of Belgrade, Technical Faculty in Bor, 2025) Djordjević, Predrag; Stojanović, Anđelka; Nikolić, IvicaThis study investigates the service quality of transatlantic cruises by applying the SERVQUAL model combined with Importance-Performance Analysis (IPA) and gap analysis. Transatlantic cruises are a unique segment within the rapidly growing cruise tourism industry, where high service quality is crucial for customer satisfaction and loyalty. Despite its importance, empirical research applying robust service quality frameworks to this specific sector is still limited. This research utilizes a quantitative survey approach using a structured SERVQUAL questionnaire. Gap analysis revealed negative gaps across all five SERVQUAL dimensions, indicating that passenger’s perceptions consistently fell short of their expectations. The Responsiveness, Reliability, and Empathy dimensions showed the largest gaps highlighting critical areas for improvement. A modified IPA analysis identified specific attributes requiring immediate attention, such as service timeliness and staff responsiveness to passenger requests. Additionally, it provided strategic guidance for resource allocation according to the categorization of other quality service attributes. The findings from the integrated IPA and gap analysis reveal a consistent pattern of performance deficits across all evaluated attributes, thereby highlighting the necessity for comprehensive service quality improvements within the observed transatlantic cruise operator. This study provides valuable insights for cruise service providers seeking to improve service delivery and passenger satisfaction.Item Refinement of the Bond work index calculation method for finer samples(University of Belgrade - Technical Faculty in Bor, 2025) Nikolić, Vladimir; Trumić, MilanThe Bond work index (BWI) is a widely recognized method used for selecting comminution equipment, evaluating grinding efficiency, and calculating the required grinding power. Although it is considered an industry standard, Bond did not fully define all steps in his original procedure, which can lead to significant variability in test results. One such undefined aspect is the initial particle size of the test materialspecifically, the commonly used 3.35 mm feed size. This raises the question of whether the BWI can be reliably determined using finer samples. In practice, materials with particle sizes smaller than 3.35 mm are often encountered. This study continues previous research by examining whether the proposed model for calculating the BWI on fine samples is applicable to medium-hard ores. The validation of the model on medium-hard samples resulted in an error of less than 1%, confirming its high accuracy.