Претрага
1180 items
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Modeliranje parametara kompenzacionih uređaja u sistemu transporta uglja u podzemnoj eksploataciji
Dragan M. Medenica (2005)Dragan M. Medenica. Modeliranje parametara kompenzacionih uređaja u sistemu transporta uglja u podzemnoj eksploataciji, Beograd:Rudarsko Geološki Fakultet, 2005
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Unapređenje konstrukcije pelet mašine
Dragan Medenica (2000)Dragan Medenica. Unapređenje konstrukcije pelet mašine, Beograd:Rudarsko-geološki fakultet, 2000
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Research on Power Plant Ash Impact on the Quality of Soil in Kostolac and Gacko Coal Basins
Savić Dragana, Nišić Dragana, Malić Nenad, Dragosavljević Zlatko, Medenica Dragan. "Research on Power Plant Ash Impact on the Quality of Soil in Kostolac and Gacko Coal Basins" in Minerals 54 no. 8 (2), Basel, Switzerland:MDPI AG (2018): 1-16. https://doi.org/doi:10.3390/min8020054
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Some models for determination of parameters of the soil oscillation law during blasting operations
... of Rade Tokalić and revised by Čedomir Beljić. Field measurement was performed by Dragan Medenica and Suzana Lutovac. Conflicts of Interest: The authors declare no conflict of interest. References 1. Savić, M. Blasting at of the Open Pits; Monograph, RTB Bor; Cooper Institute Bor, Indok Center: ...
... Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Some models for determination of parameters of the soil oscillation law during blasting operations | Suzana Lutovac, Dragan Medenica, Branko ...
... energies Article Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations Suzana Lutovac 1,*, Dragan Medenica 2, Branko Gluščević 1,*, Rade Tokalić 1 and Čedomir Beljić 1 1 Faculty of Mining and Geology, Djušina 7, Belgrade 11000, Serbia; rade.tokalic@rgf ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Mašine za ugradnju AT viseće podgrade
Čokorilo Vojin, Medenica Dragan, Dragosavlјević Zlatko, Denić Miodrag. "Mašine za ugradnju AT viseće podgrade" in Zbornik referata sa VIII međunarodnog simpozijuma MAREN 2010, Lazarevac:EPS Kolubara, RGF (2010): 384-388
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Neki aspekti održavanja jamske mehanizacije u rudniku Lece
Čokorilo Vojin, Jovančić Predrag, Milisavlјević Vladimir, Medenica Dragan. "Neki aspekti održavanja jamske mehanizacije u rudniku Lece" in Tehnika no. 4, Beograd:Savez Inžinjera i Tehničara Srbije (2013): 631-639
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Behaviour Diagnostics Of Bucket Wheel Support Structure Using Finite Elements Method: Optimization Of Structures
Predrag Jovančić, Dragan Medenica, Vladimir Milisavljević, Ivica Ristović. "Behaviour Diagnostics Of Bucket Wheel Support Structure Using Finite Elements Method: Optimization Of Structures" in Applied Mechanics and Materials 806, :Scientific.Net , Trans Tech Publications Inc. (2015): 187-196. https://doi.org/10.4028/www.scientific.net/AMM
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New Approach to Equipment Quality Evaluation Method with Distinct Functions
Milisavljević Vladimir, Medenica Dragan, Čokorilo Vojin, Ristović Ivica. "New Approach to Equipment Quality Evaluation Method with Distinct Functions" in Thermal Science 20 no. 2, Belgrade, Serbia:Institut za nuklearne nauke “Vinča”/ Vinča Institute of Nuclear Sciences, UoB (2016): 743-752. https://doi.org/10.2298/TSCI150324142M
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Dispersion Modeling of Particulate Matter in Surface Lead and Zinc Mine Šuplja Stijena
Nikola Lilić, Vladimir Milisavljević, Uroš Pantelić, Ljiljana Kolonja, Dragan Medenica. "Dispersion Modeling of Particulate Matter in Surface Lead and Zinc Mine Šuplja Stijena" in Mining and Environmental Protection, 5th International Symposium, Beograd:Rudarsko-geološki fakultet, Center for Environmental Engineering (2015): 366-375
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Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations
Lutovac Suzana, Medenica Dragan, Gluščević Branko, Tokalić Rade, Beljić Čedomir. "Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations" in Energies no. Energies 2016, Vol 9, issue 8, 617, Basel, Switzerland:MDPI AG (2016). https://doi.org/doi:10.3390/en9080617
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)... Policy 2013, 46, 15–26. [CrossRef] 24. Milisavljević, V.; Medenica, D.; Čokorilo, V.; Ristović, I. New approach to equipment quality evaluation method with distinct functions. Termal. Sci. 2016, 20, 743–752. [CrossRef] 25. Stevanović, D.; Lekić, M.; Kržanović, D.; Ristović, I. Application of MCDA in ...
... energies Article Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining Ivan Jankovic 1, Stevan Djenadic 2, Dragan Ignjatovic 2, Predrag Jovancic 2, Tomislav Subaranovic 2 and Ivica Ristovic 2,* 1 Ministry of Mining and Energy, 11000 Belgrade, Serbia; ivan.jankovic@mre ...
... es energies (mort, Article Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining Ivan Jankovic 1, Stevan Djenadic 7, Dragan Ignjatovic *, Predrag Jovancic 2, Tomislav Subaranovic 2 and Ivica Ristovic *’* 1 2 Ministry of Mining and Energy, 11000 Belgrade, Serbia; ivan. ...Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245
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Reclamation methods and their outcomes in Serbian mining basins
Ranđelović Dragana (2017)Ranđelović Dragana. "Reclamation methods and their outcomes in Serbian mining basins" in Book of Abstracts of 2nd International and 14th National Congress of Soil Science Society of Serbia Solutions and Projections for Sustainable Soil Management, :Soil Science Society of Serbia (2017): 56-57
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Modelsko ispitivanje uticaja ekrana na smanjenje potresa od miniranja
Dragan M. Bogunović (2005)Dragan M. Bogunović. Modelsko ispitivanje uticaja ekrana na smanjenje potresa od miniranja, Beograd:Rudarsko-geološki fakultet, 2005
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076
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Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija
Dragana D. Đurić (2019)U radu je prvi put opisan deo herpetofaune (Anura i Squamata) iz neogenih i kvartarnih lokaliteta Srbije. Obrađeni su lokaliteti Sibnica, Prebreza, Lazarevc, Vračević i Riđake, neogene starosti. Lokaliteti kvartarne starosti su pećine Mala i Velika Balanica, Pešturina, Hadži Prodanova, Baranica, Vrelska pećina i sedimentne ispune fisura u kamenolomima Venčac i Beočin. U radu je prikazana je taksonomska analiza herpetoloških ostataka. Pored taksonomske analize fosilnog materijala dat je kratak geografsko-geološki opis proučavanih lokaliteta, osnovne osteološke karakteristike anura i skvamata ...... (Anura i Squamata) Srbije : doktorska disertacija Dragana D. Đurić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija | Dragana D. Đurić | | 2019 | | http://dr.rgf.bg.ac.rs/s/r ...
... RUDARSKO-GEOLOŠKI FAKULTET Dragana D. Đurić NEOGENA I KVARTARNA HERPETOFAUNA (ANURA I SQUAMATA) SRBIJE doktorska disertacija Beograd, 2019 UNIVERSITY OF BELGRADE FACULTY OF MINING AND GEOLOGY Dragana D. Đurić NEOGENE AND QUATERNARY ...
... gische Zeitschrift, 84(1): 3–41. Böhme M, Ilg A 2003. fosFARbase, www.wahre–staerke.com (accessed 20 December 2018). Böhme, M., Ilg, A., Winklhofer, M. 2008. Late Miocene “washhouse” climate in Europe. Earth Planetary Scientific Letter, 275:393–401. Böhme, M., Ilg, A., Ossig, A., Küchenhoff, H., 2006 ...Dragana D. Đurić. Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija, Beograd : Rudarsko-geološki fakultet, 2019
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Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije
Dragana D. Petrović (2015-12-29)Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...... 5 . U pr oš će na i nt er pr et ac ija r up tu rn og s kl op a u ši re m i st ra ži va no m p od ru čj u (iz m eđ u IV Z i SM M ), d o b ij en a k o m b in ac ij o m p o d at ak a d al ji n sk e d et ek ci je , te re n sk o g o sm at ra n ...
... рада Име и презиме аутора Драгана Петровић Број индекса 802/2009 Студијски програм геофизика Наслов рада „Просторни положај офиолита Источне вардарске зоне: геофизичко-геолошки модел и његове геодинамичке импликације“ Ментор др Владица Цветковић Потписани/а Драгана Петровић Изјављујем да ...
... Contributions to Mineralogy and Petrology 106, 201–216, doi: 10.1007/BF00306434. Malešević, M., Vukanović, M., Brković, T., Karajičić, Lj., Obradinović, Z., Stanisavljević, R., Dimitrijević, M., Urošević, M., 1974. Tumač za Osnovnu geološku kartu SFRJ, List Kuršumilja (K 34-31), Osnovna geološka ...Dragana D. Petrović. "Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-12-29)
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)