Претрага
839 items
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An Underground Mine Ore Pass System Optimization via Fuzzy 0–1 Linear Programming with Novel Torricelli–Simpson Ranking Function
rudna sipka, optimizacija, fazi linearno programiranje, trouglasti graf, Toričelijeva tačka, funkcija rangiranjaDževdet Halilović, Miloš Gligorić, Zoran Gligorić, Dragan Pamučar. "An Underground Mine Ore Pass System Optimization via Fuzzy 0–1 Linear Programming with Novel Torricelli–Simpson Ranking Function" in Mathematics (2023). https://doi.org/10.3390/math11132914
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The recent fault kinematics in the westernmost part of the Getic nappe system (Eastern Serbia): Evidence from fault slip and focal mechanism data
Mladenović Ana, Trivić Branislav, Antić M., Cvetković Vladica, Pavlović Radmila, Radovanović S., Fügenschuh Bernhard (2014)Mladenović Ana, Trivić Branislav, Antić M., Cvetković Vladica, Pavlović Radmila, Radovanović S., Fügenschuh Bernhard. "The recent fault kinematics in the westernmost part of the Getic nappe system (Eastern Serbia): Evidence from fault slip and focal mechanism data" in Geologica Carpathica 65 no. 2, Bratislava, Slovak Republic:Veda, Publishing House of the Slovak Academy of Sciences (2014): 147-161. https://doi.org/10.2478/geoca-2014-0010
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Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina (2013)Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina. "Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)" in Book of abstracts of the International Symposium on Hierarchical Flow Systems in Karst Regions KARSTFLOW 2013, Budapest, :IAH (2013): 132
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Projection of SO2 emissions in coal power plants in Serbia
Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...... desulfurization system, a projection of SO» emissions in the period up to 2040 was created. TE Kostolac B is currently the only plant with installed desulfurization systems. The desulphurization system is only in the initial stages of its operation, based on the operating parameters of the system. Until ...
... with desulphurization system. This technology of SO» reduction can serve as an initial motivation for other thermal capacities in the country and in the surrounding area. The SEE region is treated as the biggest polluter in Europe with SO». In addition, the desulphurization system contributes to an ...
... consequence of the lack of desulphurization procedures in the recent past. This was partially changed in the last 2 years when the desulfurization system in TPP Kostolac worked for a certain number of hours. Currently, the only desulphurization plant in Serbia is the Kostolac B thermal power plant (blocks ...Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac. "Projection of SO2 emissions in coal power plants in Serbia" in 9th International Conference Mining and environmental protection, Sokobanja 24-27th May 2023., Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... into account for the choice of analytical methods that allow its full characterization and quality control. None of the spectroscopic methods used in this study was suitable for the quality control of all types of chars. Other methods like thermochemical characterization and the quantitative de ...
... application as technical products. For this reason, methods for the characterization of bio- chars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars ...
... in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area
Groundwater vulnerability maps represent an essential tool for protecting karst groundwater resources. Vulnerability assessment is usually based on spatial evaluation of various parameters that affect the vulnerability degree and regulate the protection role of the unsaturated zone. Most of these parameters, like soil and geology conditions, are constant and do not change during the year or over several years. In contrast, some parameters, such as the groundwater level, depend on the variability of recharge conditions. By considering the variability ...Vladimir Živanović, Igor Jemcov, Nebojša Atanacković. "The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area" in 5th IAH CEG conference, Slovenian Committee of International Association of Hydrogeologists - SKIAH (2022)
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Режим изданских вода карстног платоа Бабине (ЈЗ Србија, Пријепоље)
Бранислав Петровић, Вељко Мариновић, Зоран Стевановић, Саша Милановић, Љиљана Васић. "Режим изданских вода карстног платоа Бабине (ЈЗ Србија, Пријепоље)" in I скуп Одељења за математику, физику и гео-науке, 27.2.2021. , Београд : САНУ, Посебна издања Књ. DCXCVIII, Одељење за математику, физику и гео-науке (2021)
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Regulacija karstne izdani u okviru regionalnog vodoprivrednog sistema "Bogovina" - Management of Karstic Aquifer of Regional Water System "Bogovina" (Eastern Serbia)
urednik i autor monografije Zoran Stevanović. Regulacija karstne izdani u okviru regionalnog vodoprivrednog sistema "Bogovina" - Management of Karstic Aquifer of Regional Water System "Bogovina" (Eastern Serbia), Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Departman za hidrogeologiju, 2010
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Trace elements in pyrite from the Čukaru Peki porphyry Cu-high-sulfidation deposit, Serbia: implications for ore evolution in a polyphase hydrothermal system
Miloš Velojić, Viktor Bertrandsson Erlandsson, Frank Melcher, Peter Onuk, Rade Jelenković, Vladica Cvetković (2022)Porfirska ležišta bakra, Ležišta visoke sulfidacije, Pirit, Elementi u tragovima, Laserska ablacija, Timočki magmatski kompleks, Borska metalogenetska zonaMiloš Velojić, Viktor Bertrandsson Erlandsson, Frank Melcher, Peter Onuk, Rade Jelenković, Vladica Cvetković. "Trace elements in pyrite from the Čukaru Peki porphyry Cu-high-sulfidation deposit, Serbia: implications for ore evolution in a polyphase hydrothermal system" in Geologia Croatica (2022). https://doi.org/10.4154/gc.2022.25
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Tectonothermal evolution of an asymmetric extensional system: the Juhor Mts in Central Serbia (Northern Serbomacedonian massif)
Miloš Radonjić, Uroš Stojadinović, Elco Luijendijk, Dejan Radivojević, Željko Golubović, Nikola Vuković (2018)Miloš Radonjić, Uroš Stojadinović, Elco Luijendijk, Dejan Radivojević, Željko Golubović, Nikola Vuković. "Tectonothermal evolution of an asymmetric extensional system: the Juhor Mts in Central Serbia (Northern Serbomacedonian massif)" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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CliRtheRoads: An Integrated Approach to Landslide Risk Management on Roads in Serbia
Biljana Abolmasov, Ranka Stanković, Miloš Marjanović, Nikola Vulović, Uroš Đurić . "CliRtheRoads: An Integrated Approach to Landslide Risk Management on Roads in Serbia" in Progress in Landslide Research and Technology, Springer Cham (2023). https://doi.org/https://doi.org/10.1007/978-3-031-44296-4_23
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Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector
To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori... Vienna 25%) are transmission system op- erators (Ivezić et al., 2016). The natural gas transmission system can be characterized as a linear system with only one interconnection entry point at Horgos - border with Hungary (Madžarević et al., 2018). The main gas pipeline system connects all domestic gas ...
... the gas storage system, strike in the gas sector, failure of the management system, floods, earthquakes, higher technical failure (cracks), technical obsolescence or poor maintenance; • Termination of supply at the point of the biggest exit point from the domestic production system (T5) - Complete ...
... Im-the technical capacity of the largest entry in the transmission system [m3/day]. As in Serbia only exists one point of the entry into the pipeline system, the Im is equal to the Epm. The results of the N-1, calculated for the system after the imple- mentation of the strategic measures with high priority ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector" in Energy Policy, Elsevier BV (2020). https://doi.org/10.1016/j.enpol.2020.111936
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...... transport system, (Ministry of Mining and Energy,2007) Number of natural gas entrance to transport system Imported gas 1 (Horgos) Indigenous production 14 (NIS) Number of natural gas output from transport system Main Metering and Regulation Stations (MMRS) 169 Characteristics of transport system Capacity ...
... Public company “Srbijagas” is the only transport system operator, while the transport of natural gas is the responsibility of “Srbijagas” and joint stock company “Yugorosgaz” (with 50% share of Gazprom and 25% share of Srbijagas). The current transport system could theoretically provide transport of app ...
... station Horgos: 540,000 m3/h -12.96 mill. m3/daya Operation pressure 16–50 bar Compressor station 4.4 МW Transport system length 2,268 km Pipelines diameters DN 150–DN 750 Average age of system 30 years Basic characteristics of distributive network, (Ministry of Mining and Energy, 2007) Number of gas entrance ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796
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History of the development of the hydrodynamic model of the open pit mine “Drmno”, Serbia
With the creation of a hydrodynamic model, the need for it usually ceases until some next moment when the model needs to be updated and used for the set task for the necessary project documentation or dedicated studies. It is relatively rare that almost every year the model is improved and used for forecast calculations. The paper presents the basic characteristics and development of the hydrodynamic model of the open pit mine “Drmno” for 25 years. This open pit ...Dušan Polomčić, Jelena Ratković, Vesna Ristić Vakanjac. "History of the development of the hydrodynamic model of the open pit mine “Drmno”, Serbia" in Review of the Bulgarian Geological Society, Bulgarian Geological Society (2023). https://doi.org/10.52215/rev.bgs.2023.84.3.307
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Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition
Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović. "Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition" in XVII Srpski simpozijum o hidrologiji sa međunarodnim učešćem , Pirot, Srbija, 02-06. October 2024, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739406
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A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals
This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić. "A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals" in Proceedings of the 8th International Conference on Language Resources and Evaluation, LREC 2012, May 2012, Istanbul, Turkey, Istanbul, Turkey : European Language Resources Association (2012)
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...... a failure as a key factor for making decisions about taking action to reduce the risk level of the technical system failure. 3. Materials and methods The risk assessment of technical system failure is based on the risk indicators and, by combining their values in the models, a final risk assessment ...
... based on the risk analysis results. Formulating a risk assessment model of a system based on the failure risk of individual components and their partial indicators offers a better overview of the state of the engineering system based on which necessary measures for the high quality risk management and ...
... the results that indicate a risk trend and unambiguously point to future events related to system failure is very important. 3.1. Failure severity assessment The failure severity assessment of engineering system ele- ments based on the fuzzy logic theory, by proposed method, can be performed through ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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Production of morphological dictionaries of multi-word units using a multipurpose tool
The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansionRanka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas. "Production of morphological dictionaries of multi-word units using a multipurpose tool" in Proceedings of the Computational Linguistics-Applications Conference, October 2011, Jachranka, Poland, Jachranka, Poland : PTI - Polish Information Processing Society (2011)
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Quantifying the mass transfer from mountain ranges to deposition in sedimentary basins: Source to sink studies in the Danube Basin–Black Sea system
Matenco Liviu, Andriessen Paul, Avram Corina, Bada Gabor, Beekman Fred, Bielik Miroslav, ter Borgh Marten, Cifci Gunay, Cvetković Vladica, Dinu Corneliu, Dombradi Endre, Dondurur Derman, Ergun Mustafa, Francu Juraj, Fügenschuh Bernhard, Garcia-Castellanos Daniel, Götz Joachim, Horváth Ferenc, Houseman Gregory, Knežević Slobodan, Kovac Michal, Kralikova Silvia, Krijgsman Wout, Kucuk Mert, Legosteva Olga, Lericolais Gilles, Jipa Dan, Maximov Greg, Melinte Mihaela, Minar Jozef, Munteanu Ioan, I.J. Munt, C. Olariu, J.C. Otto, N. Panin, D. Plašienka, Reiser Martin, Rundić Ljupko, M. Rupprechter, Safanda Jan, Schmid Stefan, Schrott Lothar, Schuster Ralf, Starostenko Vitaliy, R.J. Steel, Stephenson Randell, Stovba Sergiy, Sokoutis Dimitrios, Stankoviansky Miloš, Stoica Marius, Stojadinović Uroš, Toljić Marinko, Tomljenović Bruno, ter Voorde Marlies, Wong How Kin (2013)Matenco Liviu, Andriessen Paul, Avram Corina, Bada Gabor, Beekman Fred, Bielik Miroslav, ter Borgh Marten, Cifci Gunay, Cvetković Vladica, Dinu Corneliu, Dombradi Endre, Dondurur Derman, Ergun Mustafa, Francu Juraj, Fügenschuh Bernhard, Garcia-Castellanos Daniel, Götz Joachim, Horváth Ferenc, Houseman Gregory, Knežević Slobodan, Kovac Michal, Kralikova Silvia, Krijgsman Wout, Kucuk Mert, Legosteva Olga, Lericolais Gilles, Jipa Dan, Maximov Greg, Melinte Mihaela, Minar Jozef, Munteanu Ioan, I.J. Munt, C. Olariu, J.C. Otto, N. Panin, D. Plašienka, Reiser Martin, Rundić Ljupko, M. Rupprechter, Safanda Jan, Schmid Stefan, Schrott Lothar, Schuster Ralf, Starostenko Vitaliy, R.J. Steel, Stephenson Randell, Stovba Sergiy, Sokoutis Dimitrios, Stankoviansky Miloš, Stoica Marius, Stojadinović Uroš, Toljić Marinko, Tomljenović Bruno, ter Voorde Marlies, Wong How Kin. "Quantifying the mass transfer from mountain ranges to deposition in sedimentary basins: Source to sink studies in the Danube Basin–Black Sea system" in Global and Planetary Change no. 103, Amsterdam:Elsevier (2013): 1-18. https://doi.org/10.1016/j.gloplacha.2013.01.00