Претрага
857 items
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... permitted speed need to be taken into account. Because of risk of overheating of the electric motor, every stacker has a minimum travel speed (around 2-4 m/minute), which then restricts the minimum number of layers. This consideration should include an analysis of the stacker's operating capacity. This ...
... stacking coal from the "Tamnava – Zapad" pit Thus for the maximum hourly pit capacity of 5000 t and the permitted speed range of the stacker (4-20 m/min) coal can be stacked in 16 to 90 layers. For a more realistic hourly capacity, the minimum and maximum number of layers changes. For a pit rate ...
... at the stockyard Table 1. Comparing coal stockyard capacity utilization with 4 and 6 piles Number of packages 2 + 2 3 + 3 Total length 570 m Coal mass, total 400,000 t 375,000 t Coal mass per package 100,000 t 65,000 t Reserve 8 days 7.5 days Time per package 6 shifts 4 shifts Max ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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An Efficient Class of Iterative Root-Finding Methods with Applications
Dejan Ćebić, Nebojša Ralević (2021)Dejan Ćebić, Nebojša Ralević. "An Efficient Class of Iterative Root-Finding Methods with Applications" in 2021 IEEE 19th International Symposium on Intelligent Systems and Informatics (SISY), IEEE (2021). https://doi.org/10.1109/SISY52375.2021.9582495
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The different approaches in seismic stratigraphy interpretation
Dejan Radivojević (2018)U tekstu su prikazana dva osnovna pristupa u seizmostratigrafskoj interpretaciji. Prvi kao polaznu osnovu ima seizmičke sekcije, čija se interpretacija u kasnijoj fazi koreliše sa bušotinskim podacima. Drugi u prvoj fazi analizira podatke dobijene dubokim bušenjem koji se kasnije korelišu sa seizmičkim sekcijama. Prikazan je hronološki redosled i objašnjen postupak pri seizmostratigrafskoj interpretaciji oba pristupa. Ovakav način interpretacije omogućio je naftnim kompanijama detaljnije i preciznije sagledavanje geoloških odnosa, smanjenje rizika istraživanja i racionalnije projektovanje razradnih bušotina.seizmostratigrafija, istraživanje nafte i gasa, karakteristične seizmičke sekvence, seiz-mofacijalna analiza... J. M, Seismic Stratigraphy and global changes in sea level Part 9: seismic interpretation of clastic depositional facies. In: Pay- ton (Eds.), Seismic Stratigraphy: Application to Hy- drocarbon Exploration, AAPG-Mem., 26, p 165-184. Tulsa, Oklahoma, 1977. [10] Vail P. R, Mitchum, R. M. and ...
... Elsevier, pp 375, Amsterdam, 2007. [2] Emery D. & Myers K. J, Sequence Stratigraphy, Bla- ckwell Science, pp 297, Oxford, 2001. [3] Mitchum R. M. Jr. & Vail P. R, Seismic stratigraphy nad global changes of sea level, part 7: stratigraphic interpretation of seismic reflection patterns in ...
... Payton (Eds.), Seismic Stratigraphy: Application to Hydrocarbon Explo- ration, AAPG-Mem., 26, p 135-144. Tulsa, Oklaho- ma, 1977. [4] Mitchum R. M, Vail P. R. & Thompson S, Seismic stratigraphic and global changes in sealevel, part 2: The depositional seqence as a basic unit for strai- graphic ...Dejan Radivojević. "The different approaches in seismic stratigraphy interpretation" in Tehnika – rudarstvo, geologija i metalurgija, Savez inženjera i tehničara Srbije, Beograd (2018). https://doi.org/10.5937/tehnika1802211R
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In vitro and in silico study of the biological activity of tetradentate Schiff base copper(II) complexes with ethylenediamine-bridge
Aleksandar Mijatović, Nevenka Gligorijević, Dušan Ćoćić, Snežana Spasić, Aleksandar Lolić, Sandra Aranđelović, Milan Nikolić, Rada Baošić (2023)The biological activity of six structurally similar tetradentate Schiff base copper(II) complexes, namely [Cu (ethylenediamine-bis-acetylacetonate)] (CuAA) and five derivatives where two methyl groups are replaced by phenyl, (CuPP), CF3 (CuTT) or by mixed groups CH3/CF3 (CuAT), Ph/CF3 (CuPT), and Ph/CH3 (CuAP) has been investigated. The set of antioxidant assays was performed, and the results were expressed as IC50 and EC50 values. The series of complexes showed interesting bioactivity and were investigated for the determination of antioxidant, antifungal, antimicrobial, and ...Aleksandar Mijatović, Nevenka Gligorijević, Dušan Ćoćić, Snežana Spasić, Aleksandar Lolić, Sandra Aranđelović, Milan Nikolić, Rada Baošić. "In vitro and in silico study of the biological activity of tetradentate Schiff base copper(II) complexes with ethylenediamine-bridge" in Journal of Inorganic Biochemistry, Elsevier BV (2023). https://doi.org/10.1016/j.jinorgbio.2023.112224
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Projected changes in air temperature, precipitation and aridity in Serbia in the 21st century
Boško Milovanović, Sebastian Schubert, Milan Radovanović, Vesna Ristić Vakanjac, Christoph Schneider (2021)In this study, the projected changes of the average monthly and annual air temperatures, precipitation amounts and De Martonne aridity index in Serbia in the 21st century are examined. For that purpose, the spatial distribution of air temperature and precipitation amount is statistically modelled using data of 64 climatologic stations and 421 precipitation stations for the period 1976–2005 using multiple linear regression. The De Martonne aridity index is calculated from the spatially distributed data. In order to obtain regional ...Boško Milovanović, Sebastian Schubert, Milan Radovanović, Vesna Ristić Vakanjac, Christoph Schneider. "Projected changes in air temperature, precipitation and aridity in Serbia in the 21st century" in International Journal of Climatology (2021). https://doi.org/10.1002/joc.7348
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Optimising in electrical energy consumption in mining plants
Snežana Aleksandrović, Vesna Damnjanović, Ilija Jeftenić. "Optimising in electrical energy consumption in mining plants" in 17th International Symposium INFOTEH-JAHORINA 2018, Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2018)
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Why classical sequence stratigraphy doesn't work in Pannonian basin?
Dejan Radivojević (2018)... Sequence Stratigraphy, edited by G. D. Williams and A. Dobb, Geol. Soc. Spec. Publ., 71, 35–66, doi:10.1144/GSL.SP.1993.071.01.03. Sztanó, O., M. Kovač, I. Magyar, M. Šujan, L. Fodor, A. Uhrin, S. Rybar, S., G. Csillag, and L. Tokes, 2016. Late Miocene sedimentary record of the Danube / Kisalföld Basin: ...
... asin: interregional correlation of depositional systems, stratigraphy and structural evolution, Geologica Carpatica, 67, 6, 525–542. ter Borgh, M., Radivojević, D., Matenco, L., 2015. Constraining forcing factors and relative sea‐level fluctuations in semi‐enclosed basins: The Late Ne ...Dejan Radivojević. "Why classical sequence stratigraphy doesn't work in Pannonian basin?" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)
Dejan Radivojević, Ljupko Rundić (2017)... of Pannonian Basin. JELENKOVIĆ, R., KOSTIĆ, A., ŽIVOTIĆ, D. & ERCEGOVAC, M. (2008): Mineral resources of Serbia. Geo- logica Carpathica, 59/4, 345–361. MAGYAR, I., RADIVOJEVIĆ, D., SZTANÓ, O., SYNAK, R., UJSZÁSZI, K. & PÓCSIK, M. (2013): Prograda- tion of the paleo-Danube shelf margin across the Pannonian ...Dejan Radivojević, Ljupko Rundić. "Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)" in 7th International Workshop: Neogene of Central and South-Eastern Europe, Velika, Croatia, maj 2017, Croatian Geological Society (2017)
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Development of terminological resources for expert knowledge: a case study in mining
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić. "Development of terminological resources for expert knowledge: a case study in mining" in Knowledge Management Research & Practice, Palgrave Macmillan (2015). https://doi.org/10.1057/kmrp.2015.10
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Development of Open Educational Resources (OER) for Natural Language Processing
In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...... Manual. 2015, Paris: Université Paris-Est Marne-la-Vallée. [12] Gross, M., The use of finite automata in the lexical representation of natural language, in Electronic Dictionaries and Automata in Computational Linguistics, M. Gross and D. Perrin, Editors. 1989, Springer Berlin Heidelberg. p. 34-50 ...
... Electronic Dictionaries. Prace Filologiczne, 2012. LXIII: p. 279-292. [14] Utvić, M., Izgradnja referentnog korpusa savremenog srpskog jezika. 2014, Univerzitet u Beogradu, Filološki fakultet: Beograd. [15] Radojičić, M., et al., Creating an environment for free education and technology enhanced learning ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... the generated matrix, an extent ana- lysis of all the elements of the matrix is conducted, resulting in m values of step analyses for each element of the set X: where all , j = 1, 2, …, m are triangular fuzzy numbers. Then, taking into account the membership function of the triangular fuzzy ...
... the “Bezdan 1” PS, were defined as follows: • Alternative 1 (A1): Long-term average stages of the canals within the study area (Baračka Canal 82.80 m above sea level and Bezdan–Vrbas Canal 84.80 m.a.s.l.) were used in the predictive hydro- dynamic analysis. The groundwater control sys- DRAGOLJUB BAJIĆ ...
... this method are presented below in several steps. The basic concept of the FAHP approach is the tri- angular fuzzy number. If this number is denoted by M(l,s,d), as illustrated in Fig. 3, it is defined by its membership function as follows: The correlation between the numerical values of triangular fuzzy ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Analysis of the exhaust emissions inventory from auxiliary mining machines
Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović. "Analysis of the exhaust emissions inventory from auxiliary mining machines" in 9th International Conference Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology (2023)
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Analiza primenjenih metoda za transport parafinske nafte
Dunja Milojević (2024)Sadržaj parafina u nafti ima dominantan uticaj na svojstva parafinskih nafti. Taloženje parafina, odnosno taloženje čvrstih čestica parafinskog voska, predstavlja ozbiljan globalni problem tokom proizvodnje i transporta sirove nafte. Samo taloženje voska zavisi od termodinamičkih faktora, poput temperature, pritiska i sastava nafte. Transport nafte cevovodima je uobičajeni proces transporta u naftnoj industriji. Kada prilikom cevovodnog transporta parafinske sirove nafte, dođe do prekida protoka i hlađenja nafte ispod temperature stinjavanja, parafini će kristalisati, pri čemu će doći do, geliranja celokupne transportovane ...... 7) Naftovodi se najčešće ukopavaju u zemlju na dubini od 0,80 — 1,50 m, mereno od površine zemlje do gornje ivice cevovoda. Ponekad se magistralni naftovodi polažu iznad zemlje na betonskim stubovima visine 0,50 – 0,75 m. Način polaganja magistralnih naftovoda može da bude ispod mora i jezera ...
... Of6paaau 2 H3JABA O HCTOBETHOCTH IITTAMITAHE, M EJIEKTPOHCKE BEP3HJE 3ABPIIIHOT PAJIA e (HMe pojiHTeJba) H npe3HMe cTyJleHTa , ip (HEE=o; ura ) /V{a, qo:cpu Bpoj aHneKkca __AA /1+ Cryujcku nporpaM _l|/{H>6« cCMeE Pćiteo _ HdlcoeTE M r«+CA Hacnon pana ___/lL 44 sA _THNOVIAA E |b &-H- ...
... Zagrevanje bušotinskog naftovoda sa grejnim kablom (Danilović d& sar., 2012) 27 Za zagrevanje se koriste grejni kablovi odgovarajuće snage 5 i više W/m. Sistem ima automatsku kontrolu rada u zadatom temperaturnom opsegu. Posebnu pogodnost predstavlja mogućnost rada sistema sa 1/3 snage. Nakon podizanja ...Dunja Milojević. Analiza primenjenih metoda za transport parafinske nafte, 2024
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An Integrated Environment for Management and Exploitation of Linguistic Resources
Ranka Stanković, Ivan Obradović (2009)... Resources and Evaluation, LREC 2006, Genoa, Italy, pp. 1692-1697, 2006. [7] M. Silberztein, “ INTEX: a Finite State Transducer toolbox”, in Theo- retical Computer Science, vol. 231, no.1, pp.33-46, Jan 2000. [8] S. Paumier, “M anuel d’utilisation du logiciel Unitex”, IGM, Université de Marne-la-Vallée ...
... http://www-igm.univ-mlv.fr/~unitex/ manueluni- tex.pdf , 2002. [9] M. Silberztein, “NooJ: an Object-Oriented Approach”, in INTEX pour la linguistique et le traitement automatique des langues . C. Muller, J. Royauté, M. Silberztein, Eds. Cahiers de la MSH Ledoux, Presses Universitaires ...
... usage o some WS4LR functions, with the possibility of access to the WS4QE web application, is also being considered. REFERENCES [1] B. Courtois, M. Silberztein, (eds.), Dictionnaires électroniques du français . Langue française 87, Paris, Larousse, 1990. [2] D. Tufiş, (ed.), Special Issue ...Ranka Stanković, Ivan Obradović. "An Integrated Environment for Management and Exploitation of Linguistic Resources" in Proceedings of the International Multiconference on Computer Science and Information Technology, Computational Linguistics – Applications Workshop (CLA09), Mrągowo, Poland, October 2009, Piscataway : IEEE (2009)
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Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia
Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović. "Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia" in Proceedings of IAH2019, the 46th Annual Congress of the International Associaton of Hydrogeologists, Málaga (Spain), September 22-27, 2019, International Association of Hydrogeologists (IAH) (2019)
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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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Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia
The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić. "Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia" in 5th IAH CEG conference, Slovenian Committee of International Association of Hydrogeologists - SKIAH (2022)
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... ne sediments in northern Banat region, PhD thesis, University of Belgrade ‐ Faculty of Mining and Geology, 167 pp. Sztano, O., Kovač, M., Magyar, I., Šujan, M., Fodor, L., Uhrin, A., Rybar, S., Csillag, G., Tokes, L., 2016, Late Miocene sedimentary record of the Danube/Kisalfold Basin: in ...
... junction area between the Carpathians and Dinarides, Tectonics, v. 31, TC6007. Magyar I., Juhasz, Gy., Szuromi‐Korecz A., Sutő‐Szentai, M., 2004, The Totkomlos Calcareous Marl Member of the Lake Pannon sedimentary sequence in the Battonya‐Pusztafoldvar region, SE Hungary ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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A bilingual digital library for academic and entrepreneurial knowledge management
A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...... Marrakech, Morocco. Lesk, M. (2005) Understanding digital libraries. Elsevier, San Francisco. Linzalone, R. (2008), “Leveraging knowledge assets to improve new product development performances”, Measuring Business Excellence 12(2), pp. 38-50. Lytras, M., Sicilia, M. A., Davies, J., & Kashyap, ...
... system: A theoretical perspective", Library Review, Vol. 58 Iss: 5, pp. 372 – 386. Stanković, R., Krstev, C., Obradović, I., Trtovac, A., Utvić, M. (2012a), A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals, in Proceedings of the 8th International Conference on Language ...
... Proceedings of the Third International Conference on e-Learning, eLearning-2012, ed. D. Milošević, Belgrade Metropoloitan University, Belgrade. Utvić, M. Stanković, R.Obradović, I. (2007) Integrisano okruženje za pripremu paralelizovanog korpusa, in Zbornik radova međunarodnog simpozijuma Razlike između ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić. "A bilingual digital library for academic and entrepreneurial knowledge management" in Proceeding of 10th International Forum on Knowledge Asset Dynamics — IFKAD 2015: Culture, Innovation and Entrepreneurship: connecting the knowledge dots, Bari, Italy, 10-12 June 2015, Bari : IFKAD (2015)
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Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia
Maja Milošević, Bojan Kostić (2021)... multiphase inclusions that are occurring in the samegarnet host with a random distribution are suggesting different genetic relations. [1] Milošević M., Kostić B., Vulić P., Jelić I. 2019. Garnets from river Lešnica alluvion, mountain Cer. IIKongres Geologa Bosne i Hercegovine sa medjunarodnim učešćem ...Maja Milošević, Bojan Kostić. "Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia" in EGU Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-2423