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Упит dcterms_creator_txt:Jelena R. MALENOVIĆ -Nikolić

856 items

  • Određivanje prostorne distribucije vrednosti hidrauličkih parametara izdani: primer površinskog kopa „Radljevo“

    Dragoljub Bajić, Dušan Polomčić, Jelena Ratković, Predrag Pajić (2019)
    Najčešće se kalibracija hidrodinamičkih modela vršila manuelno - „probanjem“ sa različitim vrednostima hidrauličkih parametara i hidrauličkih karakteristika graničnih uslova. Ovakav način rada zahteva veliko znanje i iskustvo eksperta, pri čemu ostaje otvoreno pitanje da li dobijeno rešenje ima optimalan skup parametara. Primenom optimizacione metode, koja se zasniva na Gauss-Marquardt-Levenberg-ovom algoritmu, i PEST softvera, ...
    kalibracija hidrodinamičkog modela, PEST, koeficijent filtracije

  • Hydrodynamic analysis of radial collector well ageing at Belgrade well field

    Đorđije Božović, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2019)
    The origin and effect of hydraulic resistances on the rate of ageing of radial collector wells are identified through numerical hydrodynamic analysis. The research includes hydrodynamic modeling of one such well with new laterals at Belgrade well field. The performance of the laterals is aggravated by rapid ageing. The change in the hydraulic parameters of the laterals during the first decade of operation is analyzed through simulations of the groundwater regime with realistically specified geometries and hydraulics of the ...
    Colmation, Incrustation, Groundwater modeling, MODFLOW–USG, Connected Linear Network Process

  • Mogućnost korelacije zatezne čvrstoće i dinamičkih svojstava belog venčačkog mermera

    Jelena Majstorović, Vladimir Čebašek, Veljko Rupar, Nebojša Gojković (2022)
    Zatezna čvrstoća se koristi pri dimenzionisanju komora (raspona između stubova), određivanju rezne sile na bagerima, izračunavanja efekata miniranja itd. Iskustvo je pokazalo da zatezna čvrstoća stena predstavlja 10-15% jednoosne č vrstoće na pritisak. Za preciznije određivane ovog parametra pristupa se laboratorijskim ispitivanjima, direktim ili indireknim metodama. U ovom radu su prikazana ispitivanja zatezne čvrstoće indirektnom metodom na uzorcima belog meremera ležišta Venčac. Pre utrđivanja zatezne čvrstoće, na svakom probnom telu izvršeno je merenje brzine longitudinalnih elastičnih talasa. Na osnovu ...
    mermer, zatezna čvrstoća, brzina longitudinalnih elastičnih talasa, indirektna metoda

  • Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields

    Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić (2022)
    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 ...
    upravljanje podzemnim vodama, izvorište podzemnih voda, prognoziranje

  • Application of the autoregressive model, grey model and biplot method to groundwater sources

    Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić (2022)

  • Football terminology: compilation and transformation into OntoLex-Lemon resource

    Jelena Lazarević, Ranka Stanković, Mihailo Škorić, Biljana Rujević (2023)
    У овом раду представља се пројекат који је у развоју, креирање првог дигиталног фудбалског речника на српском језику, као и да демонстрација примене модела OntoLex и љегових модула. OntoLex-FrAC модул укључује информације о учесталости и примерима употребе екстрахованих из корпуса. У овом случају, креиран је корпус за специфичан домен под називом СрФудКо, који садржи чланке вести о фудбалу на српском језику. Вишечлани термини аутоматски су екстраховани из српског корпуса, а затим ручно евалуирани и класификовани као спортски или ...
    повезани отворени подаци, корпус, СрФудКо, OntoLex, OntoLex-FrAC

  • Анализа рада дисконтинуалног система на основу симулације утовара и транспорта целог површинског копа

    Милош Јовановић (2024)
    У овом раду анализира се рад дисконтинуалног система утовара и транспорта на површинским коповима користећи софтверски пакет Haulsim. Циљ истраживања је побољшање ефикасности процеса транспорта и оптимизација коришћења ресурса. Симулација је спроведена за различите сценарије утовара и транспорта, укључујући варијације у броју возила, њиховој брзини, капацитету, као и рутама транспорта. Добијени резултати су показали значајне могућности за унапређење постојећих процедура и смањење трошкова. Дисконтинуални системи су сложени и захтевају пажљиву анализу како би се постигла максимална продуктивност и смањење ...
    анализа, симулација, оптимизација, ефикасност, Haulsim
    ... IIOBpIIHHCKOT KOIIA Ha cmamM 5.1 npHMKa3daHC Cy OCHOBHC KOHCTDyKTHBHC H TCEXHHUKC KapakrepucrukKe Garepa Komatsu PC 3000. S p z r a A N S K 2 L RNT Š al |38 e r r r t * h F f F Y N F M M M A M A S Y I | - |j ODE KEBJII UUUUDUKIK IKO C, _ 5600mm 184"* L 7455mm 247" D 2210 mm 73' M, ...
    ... 0p3uHa KaMH0OHa y KpHBHHMH CurypHa Op3HHa KaMHOHa KpeTaMba KaMHOHa y KDpHBHHMH pauyHa Ce HpeKO Vskr = /_g · R(kp + ik»),m/s mte je: g — rpaBranHoHo yOp3ambe 3eMJbHHe Te»ke, m/s? o0pacma: R – panujyc KpaBHHe, m ikp — HOHpeuHH HarH0 KpHBHHe, % kp = 0,32 — Koe(MnujeHT OTHOpa HOHpeuHOM KJH3aMby ...
    ... nokKamuuja 0arepy (t) Belaz 75581 KOMATSU Loader 7 PC-1250 RI_01 600.000 3 KOMATSU Loader 8 PC-1250 RI_02 650.000 3 LIEBHERR R1_03 Loader 9 R-9100 R? 450.000 2 YkynHo 3 Garepa .. OTKOHHC 1.700.000 t 8 KkaMHoHa JoKalje 5.6.3. Peayajrraru cuMyaanuje yroBapHo-TpaHciopTHHux cHcTeMa Hakon oj ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... ventures and public support mechanisms. R&D Management, 33: 107–115. http://www.irrodl.org/index.php/irrodl/article/view/195/277 Title Obradović, I., Stanković, R., Prodanović, J., & Kitanović, O. ...
    ... eLearning-2013, 65-70. Rhoads, R. A., Berdan, J., & Toven‐Lindsey, B. (2013). The Open Courseware Movement in Higher Education: Unmasking Power and Raising Questions about the Movement's Democratic Potential. Educational Theory, 63(1), 87-110. Stanković, R., Obradović, I., Kitanović, O., Prodanović ...
    ... eLearning 2011, 61-66. Stanković, R., Obradović, I., Kitanović, O., & Kolonja Lj. (2012). Building Terminological Resources in an e-Learning Environment. In Proceedings of the Third International Conference on e-Learning, eLearning-2012, 114-119. Stanković, R., Obradović, I., Krstev, C., & Vitas ...

  • Dosadašnja saznanja o bijelim boksitima na prostoru Crne Gore

    Mia Jovanović, Slobodan Radusinović, Vladimir Simić (2023)
    bijeli boksit, geološka istraživanja, geologija, geohemija

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... platform for management of academic and entrepreneurial knowledge, In Proceedings of IFKAD, Bari, Italy, 2014. [8] Stanković, R., Kitanović, O., Obradović, I., Linzalone, R., Schiuma, G., Carlucci, D., Using Metadata For Content Indexing Within An Oer Network. In Proceedings of The Fourth International ...
    ... Learning Object Metadata Survey, CanCore Initiative, 2004. http://www.irrodl.org/index.php/irrodl/article/view/1 95/277 [6] Obradović, I., Stanković, R., Using technology for knowledge transfer between academia and enterprises Proceedings of IFKAD, Matera, Italy, pp. 788-801, 2014. [7] Carlucci ...
    ... linked open data: the case of OpenCourseWare", Program: electronic library and information systems, Vol. 48 Iss: 1, pp.16 - 40, 2014. [11] Meusel, R., Petrovski, P., Bizer, C.: The webdatacommons microdata, rdfa and microformat dataset series. In: ISWC, 2014. [12] Paulheim, H. What the Adoption ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations

    Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković (2024)
    The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...
    dip-slip faults, vertical gravity gradients, field data analysis
    ... l Sciences, 50(1): 127-139. Tousbmalani R., 2010: Application of Gravity Method in Fault Path Detection. Australian Journal of Basic and Applied Sciences, 4(12): 6450-6460. Wada S. Sawada A.„ Hiramatsu Matsumoto Y., Okada S., Tanaka T., Honda R., 2017: Continuity of subsurface fault structure ...
    ... OGRAPHIC AND CHEMICAL CHARACTERISTICS OF ANCIENT SAMPLES FROM THE ARHAEOLOGICAL SITE “STOBI” R.MACEDONIA Filip Jovanoski, Igor Mitev, Dobriela R. Stavreva, Zlatko Ilijovski Teo( uyauHuku ucrpaxkyBama KAPTA HA IIOBPITIHMHA HA MOXO JUHCKOHTMHVYVMHMTET HA PEITIVBJIHMKA CEBEPHA MAKEJIOHMHJA ...
    ... KJIMMATCKHTE IIPOMEHH KAKO JIHJI OJI HCTPA)KVBAUKATA TIJJATDOOPMA BO TIIPOCTOPHOTO TIJJAHMPAMĐE Zlyuuua Tpnuesecka 4Hrenkoduk, Cotba Jlenumkos6a, R opou /{luo6, PEUURIE-ULI :BBEKGRGAWl]dCco . O OO O 0OOogDPOSOGOO O O OO 66 262 F ojnteMH HđoJaTotH H BeliITauKa I/IHTeJleI'eHHI/Ija USING THE iPhone ...

  • Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)

    Gordana M. Jovanović (2014-12-05)
    Rad obuhvata detaljnu studiju badenskih školjaka koje potiču sa terenajugoistočnog oboda Panonskog basena (Centralni Paratetis). Proučavani su lokaliteti naprostorima Srbije (Fruška gora, Golubac, okolina Beograda, Aranđelovca, Koceljeva,Loznica) i severoistočne Bosne (Ugljevik). Pored taksonomske analize i paleontološkihopisa bivalvija, u radu je dat i spisak revidovanih vrsta koje su do sada pronađene usedimentima badenskog kata istraživanog terena. Do sada je ukupno poznato 41familija, 108 rodova i 174 taksona. Identifikovano je 170 bivalvijskih vrsta, međukojima su neke prvi put konstatovane na ovim ...
    školjke, baden, Panonski basen (Centralni Paratetis), stratigrafija,paleoekologija, paleogeografija, paleobiogeografija
    ... 1961. Pectinídeos do Miocénico da Bacia do Tejo. Comunicacões dos Servicos Geolόgicos de Portugal, 45: 419-465. Fodor, L., Jelen B., Márton E., Rifelj H., Kraljić M., Kevrić R., Márton P., Koroknai B. i Báldi-Beke M. 2002. Miocene to Quaternary deformation, stratigraphy and paleogeography in No ...
    ... Geologija Bosne i Hercegovine, Fosilna Fauna i Flora 1, Sarajevo, 308. Avanić R. 1997: Facies analysis of the Middle Miocene of the southern-eastern part of the Mt. Medvednica. Unpubl. MSc Thesis, Univ., Zagreb, 54. Avanić, R. i Kurtanjek, N. 2006. Middle Miocene (Upper Badenian/ Sarmatian) Palaeoecology ...
    ... Basin, Lower Austria). Geologica Carpathica 55, 2: 165-178. Ćorić, S., Harzhauser, M., Hohenegger, J., Mandic, O., Pervesler, P., Roetzer, R., Rögl, F., Schloger, R., Spezzaferri, S., Stingl, K., Švabenická, L., Zorn, I. i Zuschin, M. 2004: Stratigraphy and correlation of the Grund formation in the ...

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... voda (H- statistika K-W testa, ΣR – suma rankova, Mean R – srednja vrednost rankova) K: K-W p =0.0000 H(2, N:155) =42.2 U: K-W p =.0000 H(2, N: 155) =28.97 Th: K-W p =.0014 H (2, N:155) =13.1 Grupa N ΣR Mean R ΣR Mean R ΣR Mean R Na-HCO3 96 9250 96.35 6039 62.91 7960 82.92 Ca-HCO3 ...
    ... suma rankova, Mean R – srednja vrednost rankova) Grupa N K: Kruskal-Wallis test:H (5, N= 144) =12.87212 p =.0246 U: Kruskal-Wallis test: H ( 5, N= 144) =21.08905 p =.0008 Th: Kruskal-Wallis test: H ( 5, N= 144) =22.96684 p =.0003 ΣR Mean R ΣR Mean R ΣR Mean R 1 9 366 40.66 896 ...
    ... nekompatiblnim elementima i dele se u dve podgrupe:  LIL elementi (engl. large ion litophile) su litoflni elementi sa velikim jonskim radijusima (r) u odnosu na naelektrisanje z (uglavnom su u jednovalentnom ili dvovalentnom obliku, +1 i +2). Ova grupa elemenata odlikuje se velikom mobilnošću ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... ‘(gold OR Au) AND (Bor OR Bor district)’. For evaluation standard measures were used, namely Precision P = tp/(tp+ fp), Recall R = tp/(tp+ fn), and F- measure F = 2 ·P ·R/(P +R), where tp – true positive is the number of relevant documents retrieved, fp – false positive is the number of non-relevant documents ...
    ... negative is the number of relevant documents that were not retrieved. During the evaluation ranked responses were offered to users, and the measures P and R were calculated for sets containing the first i choices of- fered, where i ∈ [1, 120] [8]. In this way, curves showing the dependency between precision ...
    ... Benjamins Pub. Co., Amsterdam/Philadelphia (2009) 14. Salton, G., McGill, M.J.: Introduction to modern information retrieval (1983) 15. Stanković, R., Trivić, B., Kitanović, O., Blagojević, B., Nikolić, V.: The Develop- ment of the GeolISSTerm Terminological Dictionary. INFOtheca 12(1), 49a–63a ...

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... support mechanisms. R&D Management, 33: 107–115. Obradović, I., Stanković, R., Prodanović, J., & Kitanović, O. (2013). A TEL Platform Blending Academic and Entrepreneurial Knowledge. In Proceedings of the Fourth International Conference on e-Learning, eLearning-2013, 65-70. Rhoads, R. A., Berdan, J ...
    ... Theory, 63(1), 87-110. Stanković, R., Obradović, I., Kitanović, O., & Kolonja Lj. (2012). Building Terminological Resources in an e-Learning Environment. In Proceedings of the Third International Conference on e-Learning, eLearning-2012, 114-119. Stanković, R., Obradović, I., Krstev, C., & Vitas ...

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun

    Anja Dević (2024)
    U ovom završnom radu prikazani su literaturni podaci koji se odnose na geotehničke karakteristike terena izgrađenih od lesa na primeru šireg istražnog prostora, tzv. Zemunskog lesnog platoa, kao i rezultati detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun. U prvom delu rada prikazani su uslovi nastanka karakteristične makroporozne strukture lesa i njen uticaj na fizičko-mehaničke karakteristike i stabilnost terena izgrađenih od lesa. Na osnovu analize i interpretacije rezultata detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun prikazane su ...
    struktura lesa,stišljivost, nosivost, sleganje, plitko fundiranje i duboko fundiranje
    ... — 5 ui i f O | [14 < [| < oO ul C r d — < ~ ILI r [) o 7 o _— i [} a E – [-:] o o o a + a o o [će] e Woeo JJo NI J saaay2a o y O š r v š č š č g g e j ! y o N o Y o g P e B R B r n e ı s n ı S B 8 Š Datum: novembar 2023 ...
    ... neporemećeni poremećeni (SPT) Ko ta Du bi na Ge ol oš ka st ar os t Ge ne ts ka pr ip ad no st Li to lo š oz na ka K V A R T A R Gr af ič ki 3 . . Ž ž = -d Opis tla sa klasifikacijom |A Q 5 e > Nasip aniropogenog porekia, Nasiao je mašanjem pska sa građavinskim ulom ...
    ... Klasfikacijatja Konsolida GRANULOMETRUSKI SASTAV ZAPREMINSKAMASA |a| ORANICEKONZISTENCNE - > Modul My za opterećenja a D u b i n a u z o r k a ( m ) p a m a x ( t r m 3 ) 140443 12,3426 22,0 , -| - - |0 | 427300 114117 16,7.47,0 Broj priloga: 5 O0pasau 1 H3JABA O AVTOPCTBY 3ABPIIHOT ...

  • Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event

    Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco (2023)
    Brachiopods, taxonomy, biostratigraphy, early Toarcian Anoxic Event, Bulgaria

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... Expert Systems, North-Holland, Amsterdam, 1986. [5] Lilić,N., Stanković,R., and Obradović.I., Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Beograd, 2000. [6] Lilić,N., Stanković,R., and Obradović.I., "A software package for mine ventilation simulation in ...
    ... in damage conditions", Ecologica, special issue 1, 9-12, (in Serbian), 1994. [7} Lilić,N., Obradović.I., Stanković,R., “Ventex: An Expert System for Mine Ventilation Systems Analysis“, Mining Technology, Vol. 79, No 915, pp. 295-302, 1997. [8] Oral,M.K. and Durucan,S., (1993), "An Integrated Environment ...