Претрага
623 items
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6
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Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas
This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – ...HPP ''Djerdap 1'', backwater influence, groundwater regime, hydrodynamic analysis, melioration area, drainage system, additional energy engagementPredrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić. "Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas" in IWA Specialist Groundwater Conference, Conference Proceedings and Book of Abstracts, 09-11 June 2016, Belgrade, Serbia, Institut Jaroslav Černi (2016)
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Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields
Groundwater management is one of today’s important tasks. It has become necessary to seek out increasingly reliable methods to conserve groundwater resources. Dependable forecasting of the amounts of groundwater that can be abstracted in a sustainable manner requires longterm monitoring of the groundwater regime (rate of abstraction and groundwater levels). Monitoring of the groundwater source for the town of Bečej, Serbia had been disrupted for multiple years. The objective of the paper is to assess the possibility of reinterpreting ...Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić. "Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields" in Geologia Croatica, Hrvatski geološki institut (2022). https://doi.org/10.4154/gc.2022.14
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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 indikatoriBoban 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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Development Of The Serbian Geological Resources Portal
... coordinate system of the Basic geological map 1:100.000, 2009, BLAGOJEVIĆ D. Geozavod Nemetali: Map of geological curiosities in Serbia 2004-2005, JOVANOVIĆ, J. FMG: Study on the hydro-geological research carried out in order to create the geological and hydro-geological information system of the National ...
... information system of Serbia (GeolISS) 2008-2009, JEMCOV, I. & TRIVIĆ, B. 2009. 8 The project funded by the Provincial secretariat for energy and mineral resources: “Creation of the subsystem for the Autonomous province of Vojvodina within the framework of the geological information system of Serbia – ...
... open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Introduction The Geological information system of Serbia (GeolISS) represents a repository for digital archiving, query, retrieving, analysis and visualization of geologi- cal data. The development ...Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić. "Development Of The Serbian Geological Resources Portal" in Proceedings of the 17th Meeting of the Association of European Geological Societies, Belgrade, Serbia : The Serbian Geological Society (2011)
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Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry
Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalizationSteven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... hydrogeologic model is an interpretation of the dynamic and physical properties of a hydrogeologic system (American Society for Testing and Materials, 2014). According to Polomčić (2001), a hydrologic system is determined by: input elements, characteristics of the medium, processes that take place in the ...
... elements are inter-dependent. The characteristics of a hydrogeologic system are its geometry (i.e. spatial distribution of water-bearing media) and filtration properties. Hydrogeologic modeling is schematization of the hydrogeologic system, due to the hydrogeologic and hydrodynamic complexity of the conditions ...
... and outflow. Given that there is a groundwater control system in place, the rate of groundwater extraction is greater than the rate of aquifer recharge (422.78 l/s vs 452.15 l/s). Analysis of the boundary conditions of the hydrogeologic system included effective infiltration and boundary conditions: ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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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 ...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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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
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WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)... of the conceptual data model. Figure 1 Characteristic part of the conceptual model 3. SYSTEM IMPLEMENTATION 3.1 Development environment The relational database management system used was PostgreSQL with the PostGIS extension to support spatial data. GeoServer was used for generating ...
... property type, by district, municipality, by mineral resource or method of registration and the like are also available. A system for reporting problems in system operation and review of frequently asked questions is also implemented at http://bugzilla.rgf.bg.ac.rs/. http://bugzilla.rgf ...
... , and a description of logical structure and physical database implementation. Section 3 outlines the development environment and usage of the system components, including the handling of spatial and attribute data, searching, reporting, and various types of statistics. 2. METHODOLOGY ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina" in Proceedings of the 5th International Symposium Mining And Environmental Protection,June 10-13,2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)
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Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem... Cerna- Timok system transfers a large part of its offset to thrusting in the Bal- kanides. The timing of this deformation is constrained by cross-cutting relationships, deformation truncating Upper Cretaceous - Paleogene sediments, syn- to post- kinematic deposition observed in the early- middle Miocene ...
... Tectonics 31, TC6007. https://doi.org/10.1029/ 2012TC003206. Matenco, L., Schmid, S., 1999. Exhumation of the Danubian nappes system (South Carpathians) during the Early Tertiary: inferences from kinematic and paleostress analysis at the Getic/Danubian nappes contact. Tectonophysics 314, 401–422 ...
... K., Schmid, S.M., Fügenschuh, B., Tischler, M., Kissling, E., Spakman, W., 2008. A map-view restoration of the Alpine–Carpathian–Dinaridic system for the Early Miocene. Swiss J. Geosci. 101, 273–294. Ustaszewski, K., Kounov, A., Schmid, S.M., Schaltegger, U., Krenn, E., Frank, W., Fügenschuh, B. ...Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides" in Global and Planetary Change, Elsevier BV (2022). https://doi.org/10.1016/j.gloplacha.2021.103714
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Risk management in coal mining
Miljanović Igor, Milutinović Aleksandar, Tokalić Rade. "Risk management in coal mining" in Proceedings, 2nd Virtual International Conference on Science, Technology and Management in Energy, Niš:Research and Development Center “ALFATEC”, Niš, Serbia, and Complex System Research Centre (2016): 89-96
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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... ability of the technical system to be able to perform the required function [1], under given conditions and at a specific moment in time, and assuming that the necessary supply is provided (external resources) [2]. Availability may also be expressed as the probability that the system will be ready for use ...
... use at any (calendar) time, or that it will be in working order or ready to be activated [3]. System availability presents the degree of efficiency of the system in terms of getting started and achieving output values at the level of the allowed tolerances of the set function of the criteria in a ...
... ability of the technical system to be able to perform the required function [1], under given conditions and at a specific moment in time, and assuming that the necessary supply is provided (external resources) [2]. Availability may also be expressed as the probability that the system will be ready for use ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom
Izrada nesavršenog ekrana do drugog sloja uglja na površinskom kopu Drmno, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara, predviđena je poslednje decenije u celokupnoj rudarskoj projektnoj dokumentaciji. Iz objektivnih i subjektivnih razloga njegova realizacija nije ostvarena do danas. U međuvremenu je, uz dodatna geološka istraživanja i promenu dinamike i parametara sistema površinske eksploatacije, došlo do određenih značajnih prostornih promena geoloških i rudarskih uslova u eksploatacionom polju. Ovo je omogućilo preliminarno inoviranje pristupa procesu i konceptu ...Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović. "Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom" in Zbornik apstrakata sa 9. Međunarodne konferencije Ugalj, Zlatibor, 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Metals in Sediment and Phragmites Australis (Common Reed) from Tisza River, Serbia
Štrbac Snežana, Šajnović Aleksandra, Grubin Kašanin Milica, Vasić Nebojša, Dojčinović Biljana, Simonović Predrag, Jovančićević Branimir (2014)Štrbac Snežana, Šajnović Aleksandra, Grubin Kašanin Milica, Vasić Nebojša, Dojčinović Biljana, Simonović Predrag, Jovančićević Branimir. "Metals in Sediment and Phragmites Australis (Common Reed) from Tisza River, Serbia" in Applied ecology and environmental research 12 no. 1, Budapest:Szent Istvan Egyetemet ^Landscape Architecture and Decision Support System Ph D School (2014): 105-122
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Geochemical and Sedimentation History of Neogene Lacustrine Sediments from the Valjevo-Mionica Basin (Serbia)
Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Jovančićević Branimir. "Geochemical and Sedimentation History of Neogene Lacustrine Sediments from the Valjevo-Mionica Basin (Serbia)" in Geochemistry - Earth's System Processes, San Francisco State University, United States:Intech: The international journal of instrumentation and control, The Instrumentation, Systems and Automation Society (2012): 1-26. https://doi.org/10.5772/32180
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Tectono-sedimentary evolution of the NE Dinarides margin during the Cretaceous Adria-Europe convergence
Uroš Stojadinović, Nemanja Krstekanić (2023)Uroš Stojadinović, Nemanja Krstekanić. "Tectono-sedimentary evolution of the NE Dinarides margin during the Cretaceous Adria-Europe convergence" in Geološki anali Balkanskoga poluostrva (2023). https://doi.org/10.2298/GABP230112001S
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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 ...... implementation The Bibliša tool operates within a complex system composed of several modules as depicted in Figure 3. Targeted at textual resources in the form of collections of TMX documents and the corresponding metadata, the system has at its disposal several other lexical resources, such ...
... morphological e-dictionaries. Together with the system of rules for compound inflection, finite automata and transducers, these dictionaries represent the basis for morphological expansion of queries. As for semantic and bilingual expansion, the system relies on wordnets (Serbian and English at ...
... using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed of several modules including a web application, which makes it readily accessible on the web. Its functionality has been tested on a collection ...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 ...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 expansion... Implementation of LeXimir followed a modular approach. Namely, there exists a common core of the system, which is coupled with several modules performing different tasks. The central part of the system is LeXimir Core composed of several .Net libraries: CommonRes.dll, NlpQuery.dll, Visu- alTMX.dll ...
... produced by the system were validated manually. In line with the possibility of a “partly” correct solution that we have recognized in subsections IV-B and IV-C, the evaluation results were classified as follows: Fig. 6. Results obtained on the first set of test data (in%) a) If the system produced the ...
... the analysis of the first set of data, that system performance tends to decrease considerably in the case of toponyms. The results illustrated by Fig. 7 confirm the conclusion that toponyms can be viewed as the system’s week point. Namely, the system failed to give a correct or partly correct solution ...Ranka 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)