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1131 items
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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 ...... M. Tanasijević, V. Milić, N. Lilić, S. Stojadinović, I. Svrkota, Risk assessment model of mining equipment failure based on fuzzy logic, Expert Syst. Appl. 41 (18) (2014) 8157–8164, http://dx.doi.org/10.1016/j. eswa.2014.06.042. [18] S. Radosavljević, N. Lilić, S. Ćurčić, M. Radosavljević, Risk assesment ...
... Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković | Applied Soft Computing | 2020 | | 10.1016/j.asoc.2020.106459 http://dr.rgf.bg.ac.rs/s/repo/item/0005027 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
... 1 June 2020 Available online 7 June 2020 Keywords: Severity of failure Severity of failure assessment Mining machinery Fuzzy sets Fuzzy logic a b s t r a c t Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain conse- quences, which require additional financial ...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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An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction
... ′(xn) ·Qf (s), s = f(yn) f(xn) , wn = zn − f(yn) f ′(xn) ·Kf (s, u), u = f(zn) f(yn) , xn+1 =wn − f(wn) f ′(xn) · Jf (s, u, v), v = f(wn) f(zn) , where Qf(s) = 1 1− 2s , Kf (s, u) = Qf (s) · (s− 1)2 1− 2s− u+ 2s2u , Jf (s, u, v)=Kf(s, u)· 1− s− s2 − 2s3+(−1− s+ s2)u + 2su2 1− s− s2 − 2s3+(−1− ...
... 11(2019), 691. [29] S. Sharifi, M. Ferrara, M. Salimi, S. Siegmund, New modification of Mahesh- wari’s method with optimal eighth order convergence for solving nonlinear equations, Open Math. J. 14(2016), 443–451. 288 D. Ćebić, N. Ralević and M.Marčeta [30] S. Sharifi, M. Salimi, S. Siegmund, T. Lofti ...
... 2s3+(−1− s− s3 − s4)u+(−1 + s+ s2 + 2s3)v . Salimi and Behl have developed an optimal family in [28], from this family we use a special member that has shown the best numerical performance in the original paper. This method is denoted by MSB with the following form: ...Dejan Ćebić, Nebojša Ralević, Marina Marčeta. "An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction" in Mathematical Communications (2020)
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Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types
Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac. "Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types" in Underground mining engineering, Рударско - геолошки факултет - Београд (2019)
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Sprega neuronskih mreža i numeričkih modela zadefinisanje sigurnih rastojanja kod razletanja komada pri miniranju
Saša S. Stojadinović (2013-09-16)Doktorska disertacija sa navedenim naslovom prezentuje rezultate istraživanjaproblema razletanja komada pri miniranjima. Cilj istraživanja bio je kreiranje opšteg iuniverzalno primenljivog modela za prognozu maksimalnih dometa razletelih komada idefinisanje sigurnih rastojanja. Kombinacijomterenskih istraživanja, numerikogmodeliranja balistikih trajektorija razletelih komada i adaptivne prirode neuronskihmreža definisan je koncept neuro-numerike sprege. Sprega je objedinila univerzalnuprimenljivost numerikog modela i sposobnost prilagoavanja neuronskih mrežalokalnim uslovima u opšti model za prognozu maksimalnih dometa razletelih komada.Za potrebe sprege, a kao integralni deo disertacije, razvijen je metod za odreivanjekoeficijenta ...Razletanje, miniranje, domet, sigurna rastojanja, numeriki modeli,neuronske mreže, sprega, verifikacijaSaša S. Stojadinović. "Sprega neuronskih mreža i numeričkih modela zadefinisanje sigurnih rastojanja kod razletanja komada pri miniranju" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-16)
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E-Waste Management in Serbia, Focusing on the Possibility of Applying Automated Separation Using Robots
Dragana Nišić, Branko Lukić, Zaviša Gordić, Uroš Pantelić, Arso Vukićević. "E-Waste Management in Serbia, Focusing on the Possibility of Applying Automated Separation Using Robots" in Applied Sciences, MDPI AG (2024). https://doi.org/10.3390/app14135685
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Primena bespilotnih letećih platformi za monitoring transportera sa trakom u površinskoj eksploataciji ležišta mineralnih sirovina
Kričak Lazar, Negovanović Milanka, Arsenijević Dragan, Milanović Stefan, Simić Nikola, Đokić Nikola (2015)Kričak Lazar, Negovanović Milanka, Arsenijević Dragan, Milanović Stefan, Simić Nikola, Đokić Nikola. "Primena bespilotnih letećih platformi za monitoring transportera sa trakom u površinskoj eksploataciji ležišta mineralnih sirovina" in TR33003 (2015)
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A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System
This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFISMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958
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Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy
Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)... oc en tr us pu lc he r 169 s a s |-4 .. i -i F š 3 3 xS50% Š š E Rasoč Š a -- NB - 839%55SSŠ S 3 š F s 88895ZS Š Š 9 3 38 Š„S88998S5S 2a — —— -— x"Q8—S5S_ a ŠB B E Š Š 8 —0 k s F1 SsSOBŠBoDPEŽ ——— -t —— ——— 9 NSESSSSKxS Seo š 'ei: BBB HIL S -i 5 o s 2 2s ;| — ——— LE 8 B BB SBaRRB:STS: ...
... ŠG&EBSŠSŠIGA tl FH agE2PSBSŠB8SE s --- 8955S93B388 - Š8 FEKR EIPFE Š — *đ""'”“"'žw.gc(wn_'o*)" i.„ + 00000 Š y o —— • ORRARIRERIRASI OI PRROOAERI TORAAAG BBR 1) s|? -|Š|Š FEEE alš|a o -- i s|5 a —— .. | a 0 —— ——— š|š š|a ••o o FI a Š aa Š BS8. s ašš — j, š NER not exposed TW ...
... the Carnic Alps (Austria). Faaes, 33: 167-184. Kova4cs S. (1994) - Conodonts of stratigraphical importance from the Anistan/Ladinian boundary interval of the Balaton Highland, Hungary. R:z. 7t. Paleontol. Strat., 99(4): 473–514. Kov4cs S., Doszt4aly L., Goczan E, Oravecz-Scheffer A. & Budai T ...Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag. "Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy" in Rivista Italiana di Paleontologia e Stratigrafia (2014)
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Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data
... financed by the Science Fund of Serbia, project RECON TETHYS (7744807). REFERENCES 1. Prelević, D., Wehrheim, S., Reutter, M., Romer, R. L., Boev, B., Božović, M. ... & Schmid, S. M. (2017). The Late Cretaceous Klepa basalts in Macedonia (FYROM) - Constraints on the final stage of Tethys ...
... Ana Mladenović, Violeta Gajić, Vladica Cvetković | Fifth Congress of Geologists of the Republic of North Macedonia | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008971 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
... geodynamic evolution of the northernmost Neotethys represent a subject of ongoing debate, particularly concerning the waning stages of the Tethyan ocean(s) in the Balkans and the timing of the Europe-Adria collision. While some researchers propose that this collision occurred in the Late Jurassic', ...Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković. "Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data" in Fifth Congress of Geologists of the Republic of North Macedonia, Macedonian Geological Society (2024)
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Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia
Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović. "Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia " in Environmental, Structural and Stratigraphical Evolution of the Western Carpathians, 11th ESSEWECA Conference, Geophysical Institute, Slovak Academy of Sciences Bratislava (2018)
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Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака
Зоран Гојковић (2023)Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...Зоран Гојковић. Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака, Београд : Универзитет у Београду, Рударко - геолошки факултет, 2023
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications
Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалимаDarko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic. "Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications" in Science of Sintering, Bor, August 2024, National Library of Serbia (2024). https://doi.org/10.2298/SOS240701029B
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A proposal for the landslide damage questionnaire in suburban areas
Landslides are one of the most often natural disasters that have an extensive impact on society including loss of life, destruction of infrastructure and properties, damage to land and loss of natural resources. Landslide losses can significantly vary and they depend on a variety of different criteria such as the size and type of landslide, lithological setting of terrain, the terrain slope gradient, the quality of materials used for construction, and the construction typology. Damage from landslides is usually ...Uroš Đurić, Biljana Abolmasov, Miloš S. Marjanović, Sanja Jocković, Miloš D. Marjanović. "A proposal for the landslide damage questionnaire in suburban areas " in 5th Regional symposium on landslides in Adriatic–Balkan Region, 23-26 March 2022, Faculty of Civil Engineering, University of Rijeka and Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb (2022)
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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)... and subbasin levels [Eqs. (31-1) and (31-2)]: I =BI- FFPI (31-1) vy: S1-G:O-D-J/F+1 M+S+L+V Ly: /Fy +1 4 I (31-2) where ( is the erosion parameter, between 0.1 for low and 1.0 for high erosional devel- opment; S, is the estimate of the water retention ranging from 0.4 for poor retention to 1.0 for ...
... Malet, J. P., Fotopoulou, S., . . . Smith, J. T. (2014). Recommendations for the quantitative analysis of landslide risk. Bulletin of Engineering Geology and the Environment, 73(2), 209�263. Available from https://doi.org/10.1007/s10064-013-0538-8. Dilley, M., Chen, R. S., Deichmann, U., Lerner-Lam ...
... , Malet, J. P., Fotopoulou, S., ... Smith, J. T. (2014). Recommendations for the quantitative analysis of landslide risk. Bulletin of Engineering Geology and the Environment, 73(2), 209—263. Available from https://doi.org/10.1007/s10064-013-0538-8. Dilley, M., Chen, R. S., Deichmann, U., Lerner-Lam ...Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
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Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia
Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology... VOZAROVA, A., HAASs, ]}., KovAcs, S., SUDAR, M., BIELIK, M. & PER6, Cs. (Eds.). Variscan and Alpine terranes of the Circum-Pannonian Region, 87–156, Geological Institute, SAS, Bratislava. KovAcs, S.*, SUDAR, M., GRADINARU, E., GAWLICK, H.-J., KARAMATA, S., HAAS, J., PER6, Cs., GAETANI, M., ...
... Drina-Ivanjica element (Dinarides). Acta Geologica Hungarica, 34: 11–44, Budapest. DIMITRIJEVIĆ, M.N., DIMITRIJEVIĆ, M.D., KARAMATA, S., SUDAR, M., GERZINA, N., KovAcs, S., DoszTALy, L., GULAcsI, Z., LESs, G. & PELIKAN, P. 2003. Olistostrome/mćlanges – an overview of the problems and preliminary ...
... H.-J., MISSONI, S., SUZUKI, H., SUDAR, M.N., LEIN, R., JOVANoVIĆ, D. 2016. Triassic radiolarite and carbonate components from the Jurassic ophiolitic mćlange (Dinaridic Ophiolite Belt). Swiss Journal of Geosciences, 109, 3, 473–494. GAWLICK, H.-J., SUDAR, M.N., MIssoNi, S., SUZUKI, H., LEIN ...Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić. "Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia" in Geološki anali Balkanskoga poluostrva (2019). https://doi.org/10.2298/GABP1901017B
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Oдређивање броја камиона за транспорт руде на површинском копу Шупља стијена
Грујичић Стефан (2024)Транспорт на површинским коповима се одвија паралелнпо са осталим процесима екаплоатације. Како не би долазило до непредвиђениих трошкова, потребно је усагласити све системе производње. Димензионисање адекватног транспортног система обезбеђује максималну продуктивност механизације и профитабилну експлоатацију. Чињеница да трошкови транспорта заузимају знатан део укупних трошкова иде у прилог томе да је одређивање потребног броја камиона за превоз откопаног материјала од великог значаја. У овом раду извршен је прорачун броја камиона потребног за транспорт руде од откопних етажа до дробилице на ...... IHIOTOJIHOT 32 HCTOBaP, KOJeE H3HOCH OKO 30 s; – BpeMe nH3aMb5a caHJLyKa 3a KHIIaMPbe, OKO 15 no 20 s; – Bpee cnymrrama caHayKa , 10 no 15 s; – BpeMe mopBparka mo yraxkeHe rpace , 10 no 15 s; 'VKyIHHO BpeMe HcTOBaPpa ce pauyHa no o0pacity: ti= b +ta+ts+to;(s) IIpH rmpojeKToBabby Hajuemihe ce ycBaja ...
... 308H2O0H O E V O A J D A | S E V O A J O A | O E V O A J O A | S E V O A J O A | O E V O A J G A | S E V O A J D A H O M W P Y I 9 1 0 9'%8C T9TI euO} e Wor:ed DHI Lo.LHHeHE»{ E'TE A 898 UIUI 'LeO WCHTed Ol PqeEMOh oMadg S? LA 24 Xoes ovyHmey EOA1 ...
... CTaHba HOJUIOTC). Tpajame yroBapa ce pauyHa no o0paciy: t= n t taey(S) n — Opoj Kamuka 3a IIyPbePbe BO3HIIa; t. — Tpajabbe jeyHor IHKJIyCa yTOBapa GCarepoM ojni 20 no 50 s; t, —Tpajab• 3aMeHe BO3HiTa 32 yTOB2aP, OKoO 15 s; Tpajame yToBapa HajBHIIe 3aBHcCH OJI Tpajabba IHKJyca KammkKe Oarepa ...Грујичић Стефан. Oдређивање броја камиона за транспорт руде на површинском копу Шупља стијена, 2024