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Упит dcterms_creator_txt:Marija D., Matović Branko Z., Rosić Aleksandra A.

1916 items

  • Fuzzy Model for Selection of Underground Mine Development System in a Bauxite Deposit

    Jovanović Saša, Gligorić Zoran, Beljić Čedomir, Gluščević Branko, Cvijović Čedomir (2014)

  • Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara

    Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević (2021)
    U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...
    dozeri, pouzdanost, kolubarski ugljeni basen
    ... Miloš Milovančević2 [1: ] 1Univerzitet u Beogradu, Rudarsko–geološki fakultet, Đušina 7, Beograd, Srbija 2Univerzitet u Nišu, Mašinski fakultet, Aleksandra Medvedeva 14, Niš, Srbija Sažetak: U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima ...
    ... velike vučne sile, pa je njegov sistem transporta posebno opterećen. 8. Literatura [1] Ignjatović D. Rudarske mašine, Univerzitet u Beogradu, Rudarsko–geološki fakultet, 2015.; [2] Ignjatović D., Jovančić P., Đenadić S., Miletić F. Analiza trenda tehničke raspoloživosti buldozera na površinskim kopovima ...
    ... [7] Milčić D., Mijailović M. Analiza pouzdanosti mašinskih delova i sistema u okruženju Microsoft Excel, Infoteh–Jahorina Vol. 10, Ref. C-8, p. 273-277, Mart 2011; [8] Ashish S., Muni S. Regression analysis - Theory, Methods, and Applications, Springer-Verlag New York, 1990.; [9] Milčić D. Pouzdanost ...

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... 1: 100000. Explanatory booklet for the Sheet Gornji Mi- lanovac — in Serbian|.- Savezni geološki zavod, Beograd. GAJIĆ, V., MATOVIĆ V., VASIĆ, N. & SREĆKOVIĆ-BATOĆANIN, D.(2011): Petrophysical and mechanical properties ofthe Struganik limestone (Vardar zone, Western Serbia).– Ann. Geol. Penins. ...
    ... [Geo/ogic Map of SFR Yugoslavia, 1:500 000|, Beograd. SCHAALF, A. (1985): Un nouvcau canevas biochronologique du Crćčtacć infćrieur et moyen: les biozoncs a radiolaires.- Sci. Geol. Bull., 38/2, 227—269. SCHMID, M.S., BERNOULLI, D., FOGENSCHUH, B., MATENCO, L., SCHEFER, S., SCHUSTER, R., TISCHLER ...
    ... ///Z·).. | MATA, 2006), the Central Dinaridic Ophiolite Belt (LUGO- Na aA VIĆ et al., 1991) or the Ophiolite Belt (DIMITRIJEVIĆ, 1997). The ophiolite belt in the northcast is referred to as the Vardar Zone Western Belt (KARAMATA, 2006), but also referred to under a variety of names ...

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... I. Gurevych, D. Bernhard and A. Burchardt, “Educational Natural Language Processing,” Notes for ENLP tutorial held at AIED 2009 in Brighton, Jul, 2009. [2] J. M. Balkin and J. Sonnevend, “Digital Transformation of Education (April 4, 2016),” in Education and Social Media: Toward a Digital Future ...
    ... Heidelberg, 2001, pp. 36-46. [13] K. Heylen and D. De Hertog “Automatic Term Extraction,” in Handbook of Terminology, 2nd ed., vol. 1, H. J. Kockaert and F. Steurs, Ed. Amsterdam: John Benjamins, 1964, pp. 203–221. [14] A. Oliver and M. Vàzquez, “TBXTools: A Free, Fast and Flexible Tool for Automatic ...
    ... I. Obradović, R. Stanković, J. Prodanović and O. Kitanović, “A TEL platform blending academic and entrepreneurial knowledge,” in Proc. 4 th Conference on e- Learning, 2013, pp. 65–70. http://termi.rgf.bg.ac.rs/ [6] R. Stanković, D. Carlucci, O. Kitanović, N. Vulović and B. Zlatić, “LRMI markup ...

  • Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... Dodevski, Milena Rosić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3 | Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić | Programme and ...
    ... CHARACTERIZA TION OF NANOME'TRIC Ca»pSEro.. MnO; Tijana B. Vlašković!, Bojana Laban', Maja Milošević”, Maria Čebela?, Vladimir Dodevski?, Milena Rosić? !Faculty of Sciences and Mathematics, University of Priština in Kosovska Mitrovica, Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia ?Department ...
    ... University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia For Publisher Prof. Dr. Biljana Pajin Printing layout Vladimir V. Srdić, Marija Milanović, Ivan Stijepović Press , TRI 0 Štamparija, Aranđelovac CIP – Karanorunauuja y nyOnakannju BuOnuoreka Marurnce cpricke, HoBu Cajn ...

  • Smanjenje sleganja plitkih temelja primenom mikrošipova

    Slobodan Ćorić, Dragoslav Rakić (2021)
    Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...
    mikrošipovi, sleganje plitkih temelja i mikrošipova, krutost tla i mikrošipova

  • BST Ceramics Obtained by Hydrothermally Assisted Complex Polymerization Method

    Ćirković Jovana, Vojisavljević Katarina, Vulić Predrag, Dojčinović Biljana, Branković Zorica, Srećković Tatjana, Branković Goran (2015)

  • Savremeni pristup rešavanja problema industrijskog otpada

    Mariја Bošković (2024)
    Rad ukazuje na savremene metode rešavanja problema industrijskog otpada, sa posebnim fokusom na pećnu prašinu koja nastaje tokom metalurških procesa, poput proizvodnje čelika u elektrolučnim pećima. U radu se detaljno razmatra hemijski sastav pećne prašine, koja sadrži teške metale poput cinka, olova i kadmijuma, i naglašavaju ekološki izazovi koje predstavlja njeno zbrinjavanje. Takođe, analiziraju se metode tretmana i valorizacije pećne prašine, uključujući pirometalurške i hidrometalurške procese, pri čemu je poseban akcenat stavljen na reciklažu cinka iz pećne prašine. Dalje, ...
    prašina, elektrolučna peć, cink, teški metali, reciklaža
    ... ......c..aa a aaaeaaaataotk 29 Slika 8. Čestica uglja..aaaaaaa a iii d tittaaatt 30 Slika 9. Čestica kreča ly iii itittaaa ii 30 Slika 10. Čestica sfernog oblika čiji sastav odgovara sastavu šljake.......aa.aaaaannnn.... 31 Slika 11. Veliki aglomerati finih čestica.......aaaaa a anaoaaaaatataotk ...
    ... 40 Slika 20. Okviri sa video snimka pri 1000 sličica u sekundi (a: mehurić se pojavljuje na površini kupke; b: prekid kapice mehurića; c, d: formiranje uzlaznog tečnog mlaza; e: emisija kapljice mlaza) ....daaa a aaaaaaaaaaeaaaa e a aaaaaaaaaaaaeaagatataoaa 40 Slika 21. Koeficijenti su izračunati ...
    ... Tabela 5. Hemijska analiza obavljena XRF uređajem na svih 8 uzoraka elektrolučne prašine [12] i i [a]ce [6 no | o | wa,| a[ a [6 |r 1080 | | |_ | 7 | # | 55 | 92 | / 44 | 78 | M% | D | 148 | 255 | JJ | 222 | | | || / |_35 | 2411 / |o% | ___|i» | 35 |__/ XJ / / |] 7 | 18 N2 ...

  • Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)

    Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    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 ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)
    General Earth and Planetary Sciences

  • Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... Dodevski, Milena Rosić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure | Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić | Program ...
    ... Cao„SEr,ı MnOx obtained by sucrose nitrate procedure Tijana B. Vlaškovićl, BojanaLabanl, MajaMilošeVićZ, MariaČebeIa3, Vladimir Dodevski3, Milena Rosić? !Faculty of Sciences and Mathematics, University of Priština in KosovskaMitrovica, Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia Ž Department ...
    ... Mn(NOx)>xH»O, erbium nitrate pentahydrate Er(NOay)ax5H»O. Metal nitrates and sucrose were mixed in stoichiometric ratios, in order to obtain a perovskite with a crystalline structure. The resulting: CapEro,, MnOxy is calcined for 15 minutes in the temperature range from 800% to 1000%. Diffraction thermal ...

  • Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata

    Sabina Z. Kovač (2015-09-28)
    Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...
    hidrotermalna sinteza, mikroporozna jedinjenja, arsenati, fosfati,rendgenska strukturna analiza
    ... kodovi: (i) ‒x+1/2, ‒y+3/2, z; (ii) y‒1/2, ‒x+1, z+1/2; (iii) ‒y+1/2, x+1, ‒z+1/2; (iv) ‒y+1, x+1/2, z‒1/2; (v) y‒1, ‒x+1/2, ‒z+1/2; (vi) ‒x‒1/2, ‒y+3/2, z; (vii) ‒x, ‒y+1, ‒z+1. Tabela 21. Vodonične veze u strukturi ZnCoAs. D‒H···A D‒H (Å) H·· ·A (Å) D·· ·A (Å) D‒H···A (º) N1‒H1···O3vii 0,89 ...
    ... kodovi: (i) ‒x+1/2, ‒y+3/2, z; (ii) y‒1/2, ‒x+1, z+1/2; (iii) ‒y+1/2, x+1, ‒z+1/2; (iv) ‒y+1, x+1/2, z‒1/2; (v) y‒1, ‒x+1/2, ‒z+1/2; (vi) –x‒1/2, ‒y+3/2, z; (vii) ‒x, ‒y+1, ‒z+1. Tabela 22. Vodonične veze u strukturi ZnFeAs. D‒H···A D‒H (Å) H·· ·A (Å) D·· ·A (Å) D‒H···A (º) N1‒H1···O3vii 0,89 ...
    ... Simetrijski kodovi: (i) ‒x+1, ‒y, ‒z+1; (ii) ‒x+3/2, y+1/2, ‒z+1/2; (iii) x‒1/2, ‒y+1/2, z‒1/2; (iv) ‒x+1/2, y+1/2, ‒z+1/2; (v) ‒x+1, ‒y, ‒z; (vi) x‒1, y, z; (vii) x‒1/2, ‒y‒1/2, z+1/2. Tabela 56. Vodonične veze u Sr2Cu. D‒H···A D‒H (Å) H·· ·A (Å) D·· ·A (Å) D‒H···A (º) O1‒H1···O3xiv 0,79(4) 2 ...

  • 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 материјалима

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... Kralja Aleksandra 73, Belgrade, Serbia milos.marjanovic@rgf.bg.ac.rs Abstract. In this article, we are elaborating an example of predictive rockfall assessment by using Terrestrial Laser Scanning (TLS) in monitoring a road cut, hosted in flysch rock formation, near Ljig in Serbia. A sequence ...
    ... target point spatial coordinates (X,Y,Z) in respect to the optical center of the instrument (0,0,0), with an accuracy of а few millimeters. In result, it generates a discrete surface model consisting of millions of points called point clouds, referenced to a relative Euclidean coordinate system ...
    ... 1088/1755-1315/833/1/012197 6 Figure 3. Cloud difference: a) 2013-14; b) 2014-15; c) 2015-16; d) 2016-17; e) 2017-18; f) 2018-19. Figure 4. Cloud difference: a) 2013-19; b) 2014-19; c) 2015-19; d) 2016-19 e) 2017-19; f) 2018-19. Comparison between 2015-2016 epoch (figure ...

  • Frequency and Length of Syllables in Serbian

    Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)
    Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.
    frekvencije slogova, dužina slogova, srpski jezik
    ... of phonemes in Serbian language vowels a(а), e(е), i(и), o(о), u(у) consonants sonorants j(ј), l(л), lj(љ), m(м), n(н), nj(њ), r(р), v(в) obstruents b(б), c(ц), č(ч), ć(ћ), d(д), dž(џ), đ(ђ), f(ф), g(г), h(х), k(к), p(п), s(с), š(ш), t(т), z(з), ž(ж) Two further aspects of Serbian must ...
    ... articulation, phonemes are classified as plosives (their graphemic representations are b, p, d, t, g, k), affricates (c, č, ć, dž, đ), fricatives (f, z, s, ž, š, h), nasals (m, n, nj), laterals (l, lj), a vibrant (r) and semivowels (v, j). The Serbian language uses two alphabets: Latin and Cyrillic ...
    ... Press. Crystal, D. (2008). A Dictionary of Linguistics and Phonetics. Oxford: Blackwell. Eddington, D., Treiman, R., Elzinga, D. (2013a). Syllabification of American English: Evidence from a large-scale experiment. Part I. Journal of Quantitative Linguistics 20, 45-67. Eddington, D., Treiman, R. ...

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • The external aggregation Newton's method for solving nonlinear equations and applications

    Marija Paunović, Dejan Ćebić, Nebojša Ralević (2020)
    Њутнов метод, агрегациона функција, ред конвергенције