Technical Faculty in Bor
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Tekstilna industrija
(Savez inženjera i tehničara tekstilaca Srbije, 2024) Urošević, Snežana; Urošević, Snežana
Effect of Chemical Composition on the Corrosion Resistance, Microstructure, Hardness and Electrical Conductivity of the Ge–In–Sn Alloys
(Springer, 2023) Zečević, Milena; Tosković, Nemanja; Đorđević, Aleksandar; Minić, Duško; Tošković, Dragan; Kolarević, Milan; Ristić, Vladica; Tasić, Žaklina
This paper presents the results of experimental and analytical testing of the ternary Ge–In–Sn system.
Experimental part includes results of the corrosion resistance, microstructure, hardness and electrical properties of the selected ternary Ge–In–Sn alloys. The prepared alloys were tested using X-ray powder diffraction (XRD) method, scanning electron microscopy with energy dispersive spectrometry (SEMEDS), hardness and electrical conductivity tests. For the obtained values of hardness and electrical conductivity, a mathematical model was used in order to determine the properties of the alloy in the entire range of the composition. The results of the Brinell hardness test show that the Ge80In10Sn10 ternary alloy has the highest hardness of all tested ternary alloys, 254.2 MN/m2 . While, results of the electrical conductivity test show that the Ge10In10Sn80 ternary alloy has the highest conductivity of all tested ternary alloys and the highest corrosion resistance. Calculated isothermal section at 25 C, were confirmed with XRD and EDS results.
The Granger causality of digital connectivity and trade globalization in the health crisis
(University of Belgrade, Technical Faculty in Bor, 2024) Petkovski, Ivana; Fedajev, Aleksandra; Milošević, Isidora
The widespread adoption of digital technology in the last decade has caused global changes, leading to the belief that technology is altering the global connectivity of economies. This is especially emphasized in light of the global health crisis in 2020. To efficiently monitor this process, it is vital to assess the anticipatory potential of this type of digital connectivity and the growth of globalization in trade. An effective analysis of this issue necessitates looking into the causative relationship between digital technology connections and trade globalization. This is performed by applying the statistical approach of Granger causality to a data set consisting of 35 European countries from 2010 to 2022. A Granger causality study was performed using the lag value estimated based on the Akaike information criterion, which equals 2. The findings suggested that there is a unidirectional causal relationship between active mobile-broadband subscriptions and imports, with the former influencing the latter. However, this causal relationship fails to be valid in the opposite direction. The examination revealed a reciprocal relationship between fixed-telephone subscriptions and exports, as well as a reciprocal relationship between fixed-telephone subscriptions and imports. The results reveal the bidirectional value of the number of fixed telephone subscriptions as a measure of digital connectivity.
Fostering Green Transition in Central and Eastern Europe: Carbon Dioxide Emissions, Industrialization, Financial Development, and Electricity Nexus
(Vilnius Gediminas Technical University, Lithuania, 2024) Mitić, Petar; Fedajev, Aleksandra; Radulescu, Magdalena; Hudea, Oana Simona; Streimikiene, Dalia
Climate change presents a substantial impediment for the global community and prompts policymakers worldwide to prioritize environmental goals when defining national development strategies. Prioritizing these goals is particularly challenging for governments of developing economies still relying on fossil fuels, foreign capital, and industry contribution to GDP. This study examines the relationships between carbon dioxide emissions, industry value added, financial development, and electricity generation in 15 Central and Eastern European countries from 1995 to 2021. To achieve this objective, we examined stationarity and cointegration and employed a vector error correction model to investigate causalities between the variables, along with a variance decomposition analysis. Our findings suggest that the short-run unidirectional causalities exist from industry value-added to carbon dioxide emissions and from carbon dioxide emissions to financial development and electricity generation. Long-term causality exists between carbon dioxide emissions and industry value added. The findings shed light on the challenges and opportunities these countries face in transitioning to climate neutrality and meeting the decarbonization targets. Within this context, the findings underscore the significance of crafting customized strategies for these economies to navigate the complex landscape of climate change while promoting sustainable industrial, electricity and financial sector development.
Technology-based factors of globalization in market and transition economies. Is there a difference?
(Vilnius Gediminas Technical University, Lithuania, 2024) Petkovski, Ivana; Fedajev, Aleksandra; Mihajlovic, Ivan
Purpose – The global crises that emerged during the last two decades proved that economies that focus their development on demand are the most vulnerable during crises. However, development strategies depend on specific internal and external circumstances impacting development of particular country. In that sense, this research aims to identify how digitalization, science and technology, and ICT trade impact globalization in market and transition economies.
Research methodology – Authors employed the PLS-SEM methodology on available dataset for 32 European economies.
Findings – According to the findings, digitalization is the factor that has the highest positive impact on globalization in market economies, while ICT trade has the greatest positive impact on globalization in transition economies. Science and technological advancements have a diverse impact. The MGA results stressed out the difference between these groups even more clear.
Research limitations – The presented model does not consider country-level analysis of globalization.
Practical implications – The study is providing theoretical and empirical base for strategy and policy development in the globalization domain in line with economy character.
Originality – The value of the research is found in contributing to the globalization topic in market, and particularly in transition economie that lack empirical research in this field.