Саобраћајни факултет [Научни радови] / Faculty of Transport and Traffic Engineering [Scientific papers]

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    (City Net Scientific Research Center Ltd, Beograd, Saobraćajni fakultet Beograd, 2023) Suzana Miladić-Tešić; Milan Tešić; Katerina Folla; Olja Čokorilo
    Road safety key performance indicators (KPI) are the indicators reflecting those operational conditions of the road traffic system that are influencing the system’s safety performance. The automated process of KPIs data collection, accompanied by advanced smart solutions in urban areas, smart in-car solutions, etc. is expected in the near future. The European Commission developed a set of common methodological guidelines for the data collection and estimation of the KPIs in the European Union countries. Internet of Vehicles is an emerging technology approach that can be expected to become a promising solution to overcome serious traffic issues. The objective of this paper is to explore the process of road safety KPIs data collection and sharing using Internet of Vehicles networking. In that context, a star rating of driver’s behavior could be done, and such data could be shared aiming to better improve drivers’ safety behavior.
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    (Oxford University Press, 2020) Curguz, Z.; Venoso, G.; Zunic, Z. S.; Mirjanic, D.; Ampollini, M.; Carpentieri, C.; Di Carlo, C.; Caprio, M.; Alavantic, D.; Kolarz, P.; Stojanovska, Z.; Antignani, S.; Bochicchio, F.
    The requirements about radon measurements in schools and public buildings included in most of the national and international legislations are generally restricted to all the rooms located at the ground floor and basement, assuming the soil beneath the building as the main source of indoor radon. In order to verify such an assumption for small buildings having at maximum two floors, a preliminary study was performed in 50 schools located in 15 municipalities of the Republic of Srpska. Results of this study suggest that a protocol requiring measurements at the ground floor only may be considered adequate. Due to the high radon spatial variability for rooms at the ground floor, it is preferable to require measurements in a high number of rooms (preferably in all of them) in order to assess the compliance with the reference level established by the legislation.
  • Ставка
    (2022) Vojinović, Nikolina; Stević, Željko; Tanackov, Ilija
    Decision-making represents a very popular field with many developed approaches. However, still exists the need for the creation of novel integrated models such as well is the case in this paper. The novel integrated Improved Fuzzy Stepwise Weight Assessment Ratio Analysis (IMF SWARA) method, Fuzzy Dombi weighted geometric averaging (FDWGA) operator and PESTEL (P-Political, E-Economic, S-Social, T-Technological, E-Environmental, L-Legal) model has been developed. Five decision makers (DMs) have evaluated six main elements of the PESTEL analysis and 30 elements more (five for each group). In total, we have created 35 models based on the developed model. Results of PESTEL analysis based on IMF SWARA method and FDWGA shows that legal and economic factors represent the most significant parameters, while last placed belong environmental group. Also, the usefulness of the developed integrated model has been demonstrated.
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    Experimental Testing of Combustion Parameters and Emissions of Waste Motor Oil and Its Diesel Mixtures
    (MDPI, 2021) Ðorđić, Dragiša; Milotić, Milan; Ćurguz, Zoran; Ðurić, Slavko; Ðurić, Tihomir
    The production of hydrocarbon fuel from waste engine oil is an excellent way to produce alternative fuels. The aim of the research in this paper is obtaining fuel with a mixture of waste engine oil (WMO) and diesel fuel that can be used as an alternative fuel for internal combustion engines and low power heat generators. With this goal in mind, tests were conducted to estimate the combustion parameters and emissions at a low heat output of 40 kW.Waste motor oils (WMO) and four of its diesel mixtures were used, varying in weight from 20% WMO to 50% WMO. Test results were analysed and compared with diesel fuel. Higher NO, CO and CO2 emissions were determined for WMO and its mixtures compared to diesel fuel. The flue gas temperature in the kiln was high for all WMO and diesel blends, which indicates the efficiency of the input energy. The absorption of flue gases in the scrubber with distilled water showed higher presence of sulphates, sulphides, nitrates and nitrites compared to allowable values.
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    Modeling the Influence of Information Systems on Sustainable Business Performance and Competitiveness
    (MDPI, 2021) Djalic, Natasa; Nikolic, Milan; Bakator, Mihalj; Erceg, Zivko
    The necessity for sustainable development, the coronavirus pandemic, and conducting business within the frameworks of the fourth industrial revolution—Industry 4.0 create a challenging environment where enterprises have difficulties to achieve and maintain competitiveness. Information is becoming a core construct when it comes to conducting business in the modern, globalized business environment. In this paper, the influence of information systems (IS) on sustainable business performance and competitiveness is analyzed. Additionally, the influence of human resource management (HRM) and decision making (DM) on sustainable business performance and competitiveness, as two crucial constructs in the new paradigm of conducting business, are addressed. The relations are discussed from the aspect of sustainable development and future post-pandemic business trends. The main goal is to determine the relations between the noted constructs in a transitional setting. In sum, 184 manufacturing enterprises from Republika Srpska were surveyed via a structured survey, where the focus was on quantifying and modeling the influence of IS, HRM, and DM on sustainable business performance. The results indicate that IS, HRM, DM can affect business performance in a transitional economic setting. This approach is novel, as the existing body of literature does not address all the noted influencing factors on sustainable business performance and competitiveness in a transition economy. Hence, this paper significantly contributes to the existing body of literature and provides a solid basis for future research in this domain.