Претрага
845 items
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Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?
Nikola Stanković, Taras Gerya, Vladica Cvetković, Vesna Cvetkov. "Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?" in EGU General Assembly 2024, Vienna, 14-19 April 2024, Göttingen : Copernicus GmbH (2024). https://doi.org/10.5194/egusphere-egu24-568
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Fragmentation Size Prediction of Blasted Material Using a Specialized Software for Drilling and Blasting
Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić, Miljan Gomilanović (2024)Design and optimizing the drilling and blasting parameters, should fill the requirements for the capacity, fragmentation size, and technical characteristics of loading and transport equipment, and enable a safe work at the open pit. Besides mentioned, it also achieves the minimal impact on the environment of the open pit and decreases the negative effects on the environment, especially in the blast vibration and flyrock. To obtain the best possible blasting effects and consider all the factors, a specialized software is ...Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić, Miljan Gomilanović. "Fragmentation Size Prediction of Blasted Material Using a Specialized Software for Drilling and Blasting" in The 55th International October Conference on Mining and Metallurgy, Mining and Metallurgy Institute Bor (2024). https://doi.org/10.5937/IOC24077M
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Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem
Mirko Kurdulić (2024)Rudarstvo je ključna grana industrije koja obezbeđuje osnovne sirovine neophodne za razvoj savremenih tehnologija i infrastrukturnih projekata. Sa razvojem tehnoloških inovacija i povećanjem globalne potražnje za mineralnim resursima, efikasnost i bezbednost u rudarstvu postaju prioriteti. Ovaj diplomski rad istražuje aspekte koji se odnose na optimizaciju, analizu i unapređenje tehnika eksploatacije i obrade mineralnih resursa, sa posebnim fokusom na pripremu ležišta za eksploataciju primenom podetažne metode otkopavanja sa zapunjavanjem otkopa.Podetažna metoda otkopavanja sa zapunjavanjem otkopa u radu će biti analzirana ...rudarstvo, priprema ležišta, optimizacija, eksploatacija, podetažne metode, zapunjavanje, životna sredina... Republičkom komisijom za overu rezervi su bilansirane rezerve kategorije A+B+C1 (od nivoa -75m do nivoa -315m). Za kategoriju A vršeni su istražni radovi ı bušenje sa maksimalnim rastojanjem između njih 100h100m. Za kategoriju B i C1 rađena su istražna bušenja 30 sa rastojanjem 150h150m ı 200h200m ...
... Dimenzije kanala trapeznog oblika su: Širina kanala a = 0.25 m Širina kanala b = 0.30 m Visina kanala h = 0.25 m Pad kanala i = 0.5 %, i = 144 Koef. hrapavosti po Bazinu kr = 0.85 Površina poprečnog preseka kanala: (b-a)·h A=a'·h+ ——= 0.06875 m? 67 Obim kvašenja: U=a+h+c= 0,755m Hidraulični ...
... ( rOfaH > 2A L]b}l/k , (ue (ue poOume/bd) npe'Šmte) 6p. MHHJeKca + {8 npe/lao/na eceKTpOHCKy Bep3Hjy 3aBPpHIHOTr paa Ha OCHOBHHM/MBCTCP aKaJIČMCKHM CTylll/IjaMa TIOJ1 HaCJIOBOM: {ipunpeM2 ___VoHuuTO __ _ČecAVOATa4u0 -77 __TPUMEHOM hođdelaWqQ&C _METOJME Ov~conaWfbA __CA _GA /b/A/MA/ ĆA OTVOhnd ...Mirko Kurdulić. Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem, 2024
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Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin
Filip Anđelković, Dejan Radivojević (2018)... Petroleum Generation in the Southeastern Part of the Pannonian Basin (Serbia). Technics – Mining, Geology and Metalurgy 63, 43–47. Lučić, D., Saftić, B., Krizmanić, K., Prelogović, E., Britvić, V., Mesić, I., Tadej, J. 2001. The Neogene evolution and hydrocarbon potential of the Pannonian Basin in Croatia ...Filip Anđelković, Dejan Radivojević. "Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin" in CBGA, Salzburg, Austria, Septembar 10-13, 2018, Bulgarian Academy of Science (2018)
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Tracking of the temporal dependency of fading of the human footprint temperature contrast
In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović. "Tracking of the temporal dependency of fading of the human footprint temperature contrast" in VIII International School and Conference on Photonics, Belgrade, Serbia, 23-27 August 2021, Institute of Physics Belgrade (2021)
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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 ...... Production And Transportation. SPE Production & Facilities, 10(1), 50-54. 15.Prstojević, B. (2012). Cevovodni transport nafte i gasa. Beograd: Univerzitet u Beogradu, Rudarsko-geološki fakultet. 16.Prstojević, B. (2012). Priprema nafte, gasa i ležišnih voda. Beograd: Univerzitet u Beogradu, Ruda ...
... transporta. lako manje efikasni u poređenju sa drugim metodama prema obimu i kapacitetu, prednost kamiona leži u lakoći manevrisanja od tačke A do tačke B. (Abdel-Aal, 2021) Slika 3.7 - Cisterne (iStock) 15 4. PREDNOSTI CEVOVODA, I RIZICI KOJIMA SU ONI IZLOŽENI Stvarni potencijal ovih cevovoda ...
... Nedostatak ovog rešenja je da se naftovod ne može čistiti čistačem. (Prstojević, Cevovodni transport nafte ı gasa, 2012) Kod drugog rešenja, pod „b“, nafta protiče kroz unutrašnju cev, a grejni fluid, vruća voda ili para, protiče kroz prstenasti prostor. Prednost ovih tehničkih rešenja Je što ...Dunja Milojević. Analiza primenjenih metoda za transport parafinske nafte, 2024
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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... 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 correct lemma and assigned the correct inflectional class for a given MWU the overall solution was considered as correct; b) If the ...
... belonging to a particular inflectional class, and on the other, we identified inflectional classes associated with the same additional information. B. The rule design strategy The procedure for automatic construction of a DELAC type dictionary relies on a manually produced set of rules. The rule ...
... figure shows the percent of correct solutions for nouns and adjectives produced by the system (case a), the percent of partly correct solutions (case b), and the percent of incorrect solutions (case c). The bottom part of Fig. 6 illustrates the rank of the correct solution in the case of nouns, expressed ...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)
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... Figure 2 The X-ray diagram of the sample, which is exposed for 7 days in a humid environment with the addition of lime binders: a) 6 %, b) 4 %, c) 2 % M. Šešlija i dr. ...
... (Fig. 3a, 3b, 3c). Figure 3 The X-ray diagram of the sample exposed to 7 days in a humid environment with the addition of cement binder: a) 6%, b) 4%, c) 2% 3.2.4 The sample exposed for 28 days in a humid environment without the addition of binders (TA-P-28) A sample of the mixture of ...
... Figure 5 The X-ray diagram of the sample, which is exposed for 28 days in a humid environment with the addition of lime binders: a) 6 %, b) 4 %, c) 2 % Laboratory testings of fly ash ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Energetska tranzicija u domaćinstvima: analiza usaglašenosti Srbije sa paketom „Čista energija za sve Evropljane“ / Energy Transition in Households: Analysis of Serbia’s Compliance with the „Clean Energy for All Europeans“ Package
Zahvaljujući svojoj složenosti i heterogenosti, sektor domaćinstva predstavlja neizostavnu tačku u politikama energetske tranzicije. U Evropskoj uniji, potrošnja energije u domaćinstvima čini oko 26% finalne potrošnje energije, dok u Srbiji ovaj sektor ima najveći udeo u finalnoj potrošnji, što čini oko trećinu finalne potrošnje. Primenom mera energetske efikasnosti moguće je ostvariti značajne energetske uštede, što zajedno sa smanjenjem i supstitucijom upotrebe fosilnih goriva vodi manjem doprinosu klimatskim promenama i značajnom smanjenju zagađenja vazduha. Paket zakonskih mera “Čista energija za ...energetska tranzicija, paket čiste energije, regulatorni okvir, energetska politika, domaćinstva, srbijaBoban Pavlović, Aleksandar Madžarević, Dejan Ivezić, Marija Živković, Dušan Mojić. "Energetska tranzicija u domaćinstvima: analiza usaglašenosti Srbije sa paketom „Čista energija za sve Evropljane“ / Energy Transition in Households: Analysis of Serbia’s Compliance with the „Clean Energy for All Europeans“ Package" in Energija, ekonomija, ekologija, Univerzitetska biblioteka u Kragujevcu (2024). https://doi.org/10.46793/EEE24-1.51P
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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Моделирање дисперзије прашине у фази одлагања флотацијске јаловине у руднику “Шупља стијена”
Вања Живановић (2024)Рударство, као једна од кључних индустрија у многим земљама света игра важну улогу у стварању економске вредности али истовремено и велики притисак на животну средину. Процеси експлоатације и обраде руде често укључују употребу разних хемикалија, што може изазвати загађење земљишта, воде и ваздуха. Очување животне средине постаје све важније питање у свету у којем се суочавамо са изазовима као што су климатске промене, деградација земљишта, губитак биодиверзитета. Моделирање дисперзије загађења животне средине представља процес у ком се коришћењем математичких модела ...... HIpHOpHTeT HOCTaBJba OOaBe3a nedouHHucama Moryhux yrumaja y OJIHOCy Ha OCHOBHČ ČCKOJIOINIIKC KaTerOpHje KaO IIITO Cy: Ba3JlyX, BOJIA, TJIO, KHIHMa, (b;topa, (bayHa, rej3ax H JIp. CaBpeMeHa HayKa H IIpaKCa KOpHCTH IIHDpOK CHeKTAPp MOJICIIa 32 JIOHOTNHIČMe OJUIyKa KOJC Tioip)KaBajy MHCHJy 3aTHTC JbyJICKOT ...
... 019/19) OBHM TIpaBH:JIHHKOM riponucyje ce OnMDxa canpx)kuHa emna0opara o riponjeHu yrHmaja Ha JKHBOTHJy CPpeJUHHy. 2.2. Monenupame – Iojasm H b Mojne: je "roje)HOCTaBJbHBaMbC CTBapHOCTH KOJe je H3BpIHCHO TaKO JIa Ce CTEKHC yBHJI y g3aOpaHe arpHOyTe ojpebeHor (DH3HuKOr, OHOJIOHIKOI, ČKOHOMCKOT ...
... XEMOIJIOOHH. AnaoT-nmuokKcuji npencTaBJjba rac KapaKTepHcTHuHOr MMHpHca H TaMHOINIpBeHe (Ooje. HajorponBHujH je 0L CBHX a3OTOBHX OKcHJIa. Criaxta y (b)urorokcHuHa jeniMeMa Ira 3Haul Jla 8323HBa HCHOBOJPHC IHIOCIICJUHIIe IIO BereTanujy, yKJbyuyJyhuH omrrehema Ha nmumhy MJI HrJIHHMHMa H Ha Taj HauiiH ...Вања Живановић. Моделирање дисперзије прашине у фази одлагања флотацијске јаловине у руднику “Шупља стијена”, 2024
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Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides
Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević. "Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides" in Eurosoil2020, online event 2021, Eurosoil, Frontiers Abstract Book (2021)
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Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example
Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska. "Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2020). https://doi.org/10.1007/978-3-030-60227-7_29
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The analysis of the geothermal energy capacity for power generation in Serbia
Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)... GENERATION IN SERBIA by Jana S. STOJKOVI] a*, Goran H. MARINKOVI] b, Petar J. PAPI] a, Mihailo G. MILIVOJEVI] a, Maja M. TODOROVI] a, and Marina D. ]UK a a University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia b Geological Survey of Serbia, Belgrade, Serbia Original scientific paper ...
... pp. 947 -953 [7] Fournier, R., Chemical Geothermometers and Mixing Models for Geothermal Systems, Geothermics, 5 (1977), 1-4, pp. 41-50 [8] Hitchon, B., et al., Introduction to Ground Water Geochemistry, Geoscience Publish. Ltd, Edmonton, Al- berta, Canada, 1999 [9] Giggenbach, W., et al., Geothermal ...Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk. "The analysis of the geothermal energy capacity for power generation in Serbia" in Thermal Science, National Library of Serbia (2013). https://doi.org/10.2298/TSCI120215033S
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WS4LR - a Worksation for Lexical Resources
... further used in a number of software tools for wordnet management, such as VidDic (Horák, 2004). The underlying XML format is illustrated in Appendix B. 2.3 Aligned Texts A pair of semantically equivalent texts in different langauges, such as an original text and its translation, that are and aligned ...
... synset literals only, without their inflected forms. We plan to include these forms in the search as well. 6. Bibliographical References Courtois, B. & Silberztein, M. (eds.) (1990) Dictionnaires électroniques du français, Langue française 87, Paris: Larousse Fellbaum, C. (ed.) (1998) WordNet: ...
... redovni profesor .NC_AXN+N+Comp:mp4v redovni profesor,redovni profesor .NC_AXN+N+Comp:ms1v redovnih profesora,redovni profesor .NC_AXN+N+Comp:mp2v B. Wordnet FormatENG20-11902751-n n pear 2 Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
... sample are representing deformation propagation, so depending of type of deformations, waves of different types can be caused: a) longitudinal waves b) transversal waves Today, ultrasonic waves with frequency over 20 000 Hz are applied in elastic properties investigations of different materials, ...
... „Podzemna eksploatacija mineralnih sirovina 2017“, Beograd. Beograd: Univerzitet u Beogradu – Rudarsko – geološki fakultet. JASIEHKO J. and STAWISKI B. (2001) Analysis of cracking plane geometry in old sandstone columns. Materials and Structures, 34, pp. 248–252. KAHRAMAN S. (2007) The correlations ...
... well log on the Norwegian Continental shelf. Thesis (MSc), Faculty of Mathematics and Natural Sciences, University of Oslo MOORE R. E., KEARFOTT R. B. and CLOUD M. J. (2009) Introduction to interval analysis. Philadelphia: Society for Industrial and Applied Mathematics. MYRIN M. and MALAGA K. (2006) ...Miloš Gligorić, Jelena Majstorović, Suzana Lutovac. "Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty" in Underground Mining Engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2018). https://doi.org/10.5937/PodRad1832001G
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Оптимизација управљања процесима рекултивације површинских копова угља
Bojan S. Dimitrijević (2014-05-30)Ширење површинске експлоатације минералних сировина а нарочито енергетских ресурсафосилних горива, чине површинске копове угља просторно доминантним објектима великих рударскихбасена како у нас тако и у свету. Експлоатациона активност, прати негативне еколошке утицаје наживотну средину шире околине, што нас обавезује на интегрално планирање, ревитализацију,рекултивацију и уређење нарушеног простора за његово поновно хумано коришћење упостексплоатационом периоду. Постексплоатационо санирање и уређење предела површинских коповаи одлагалишта односно нарушеног простора изазваног рударским радовима и пратећих објеката,представља синтетички мултидисциплинарно-интердисциплинаран веома комплексан вишефазниинжењерски пројектни задатак.У уводном ...рекултивација, постексплоатациони предео, површински коп угља,вишеатрибутна анализа, одлучивање, процеси, рекултивационо решење... метода PROMETHEE II. Метода PROMETHEE уводи функцију преференције P(a,b) за алтернативе a и b које су вредноване критеријумским функцијама (означимо једну од њих са f). Алтернатива a je боља од b према критеријуму f ако je f(a) > f(b). Функција преференције ce дефинише на следећи начин: ⎩ ⎨ ⎧ >− ...
... критеријумску функцију према усвојеном типу преференције. Функција преференције Р(а, b )ce односи на једнокритеријумско упоређивање алтернатива a и b . Вишекритеријумски индекс преференције алтернативе a над b дефинисан je изразом ∑∏ = = n i ii baPwba 1 ),(),( (4.50) где je п - број ...
... чине: Роторни багер SRs 2000 32/5 + VR, транспортери са траком B = 2000 mm (4 ком.), и одлагач А2Rs-B 8500*60. � II БТО систем чини: Роторни багер SchRs 630 25/6 и самоходни транспортер BRs 1400 (37+50)*16, транспортери са траком B = 1600 mm (4 ком.), и одлагач ARs (BRs) 1600 (28+50)*17. По ...Bojan S. Dimitrijević. "Оптимизација управљања процесима рекултивације површинских копова угља" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-05-30)
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Model of the Geomagnetic reference field of the Republic of Serbia
Spomenko J. Mihajlović, Vesna Cvetkov (2024)Spomenko J. Mihajlović, Vesna Cvetkov. "Model of the Geomagnetic reference field of the Republic of Serbia" in 5th Congress Geologists of the Republic of North Macedonia, Ohrid, 28-29. 10. 2024, Македонско геолошко друштво (2024)
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Using English Baits to Catch Serbian Multi-Word Terminology
In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection... We have used two bilingual lexical resources. (a) Serbian Wordnet (SWN) (Cvetana Krstev, 2013) that is aligned to the Princeton WordNet (PWN)9 and (b) a bilingual list con- taining general lexica with 10,551 English/Serbian entries. The production of the bilingual list of inflected forms was done in ...
... lly evaluate extracted nominal phrases in the target language terminology by aligning it with the es- tablished terminology in the source language; (b) to build a classifier that would evaluate as positive automatically caught Serbian terminology using English baits. As an ad- ditional result we enriched ...
... Krstev, C. (2008). Processing of Serbian. Automata, Texts and Electronic Dictionaries. Faculty of Philology of the University of Belgrade. Moirón, B. V. and Tiedemann, J. (2006). Identifying id- iomatic expressions using automatic word-alignment. In Proceedings of the EACL 2006 Workshop on Multi-word ...Cvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)