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Упит dcterms_creator_txt:Seyed Ali S. Razeghi

1019 items

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... in N -S orientation. K ey as for Fig 1. 97 Archaeology and Science 10 (2014)Petković et al - Advantages and Disadvantages of a Parallel...(93-110) Fig. 3a Contour map of a vertical gradient of TMI in N-S orientation. Key as for Fig 1. Fig. 3b Contour map of a vertical gradient of TMI in N-S orientation ...
    ... and Disadvantages of a Parallel...(93-110) Fig. 3c Contour map of a vertical gradient of TMI in N-S orientation. Key as for Fig 1. Fig. 4 Vertical gradient of TMI contour map of zigzag fashion in N-S orientation fi ltered by moving average fi lter in two directions. 99 Archaeology and Science ...
    ... Magnetometric Archeological Research | Mirko Petković, Vesna Cvetkov, Branislav Sretenović | Arheologija i prirodne nauke | 2014 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005535 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • Макроскопско препознавање стена - практикум

    Кристина Шарић, Владица Цветковић (2021)
    петрологија, стене

  • The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia

    Branislav Petrović (2022)
    The epikarst as a part of the karst aquifer represents a complex point of contact and mixing of unconsolidated material from the terrain surface, carbonate rocks altered by “corrosive” water, flora and fauna (and remains of), which is partially saturated with groundwater. Recharge of karst aquifers, usually, occurs via the unsaturated zone which uppermost part could be epikarst zone. Significant amounts of (plant accessible) water, and other solutes and particles, can be stored in this zone for extended periods ...
    epikarst, tracer test, shallow cave, Suva Planina Mt., Serbia

  • Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava

    Boban S. Pavlović (2022)
    Aktuelnu energetsku tranziciju odlikuje ubrzanje procesa dekarbonizacije energetskih sistema, unapređenje energetske efikasnosti, razvoj čistijih tehnologija baziranih na obnovljivim izvorima energije i održivije korišćenje prirodnih resursa. Da bi se napravio ovako krupan zaokret u postojećim energetskim sistemima, osim promene postojećih tehnologija, potrebno je u planiranje energetske tranzicije uključiti i političke, sociološke, ekonomske i ekološke aspekte, a pre svega obrasce ponašanja i donošenja odluka krajnjih potrošača. Predmet istraživanja u disertaciji je energetska tranzicija sektora domaćinstva, preciznije tranzicija u grejanju domaćinstava, imajući u ...
    energetika, energetska tranzicija, energetsko planiranje, energetsko modeliranje, obnovljivi izvori energije, domaćinstva, ponašanje potrošača

  • Tektonska evolucija severoistočnih Dinarida

    Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović (2022)
    ... Bojan Kostić, Uroš Stojadinović | 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022. | 2022 | | http://dr.rgf.bg.ac.rs/s/repo/item/0006779 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... k i Drina-Ivanjica jedinice. Dobijeni rezultati ukazuju na tri glavne deformacione faze. Najstarija, prealpska deformaciona faza asocirana je sa S-J kontrakcijom tokom kasno paleozojske Variscijske orogeneze. Duktilne strukture koje odgovaraju prealpskim deformacijama predstavljene su S1 folijacijom ...
    ... units. The obtained results indicate the existence of three main deformation phases. The oldest, pre-Alpine deformation phase is associated with N-S contraction during the Late Paleozoic Variscan orogeny. The ductile structures that accommodate this pre-Alpine deformation are represented by S1 foliation ...

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... “Bezdan 1”, Serbia | Dragoljub Bajić, Dušan Polomčić | Geološki anali Balkanskoga poluostrva | 2014 | | 10.2298/GABP1475103B http://dr.rgf.bg.ac.rs/s/repo/item/0002913 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... sa–Danube Water Scheme. To resolve one of the func- tional issues of the multipurpose Danube–Tisa–Danu- be system, new pumping stations (total capacity 35 m3/s) will have to be built at the locations of previous pumping stations, which have been out of commission for some time. Apart from dealing with the issues ...
    ... predictive hydro- dynamic analysis. The groundwater control sys- DRAGOLJUB BAJIĆ & DUŠAN POLOMČIĆ104 tem is comprised of 12 wells, whose capacity is 40 l/s each. The time needed to lower the water table to below the design elevation and allow for the construction work to proceed is 5 days. • Alternative ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... ge ne ra ti on [1 Wh ] 1000 10,0 Pa rt ic ip at io n of co al in el ec tr ic it y pr od uc ti on [% ] 0,0 -- B F.G S-O-S T.O BBB .B -00 85B85BššŠ e a 82 – I I I I I RI :N-BR:Bo-Bo-O5-Bo-o5-Bo:Bso:BOB:Oo5-50:Bo-S0:o-B5-G0:-Bo-B5o:BeB: - Q e q RRRR RRRGSKSSSGSGSGS lss ...
    ... Madžarević, Predrag Jovančić | International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023 | 2023 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008187 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... 0 eo w i e T T n o u 00 miuČ- O T W i m TO O ~ 0 O O a eNeon E:o:u: ' o e i e oč reeo oeezkžjjBNj“”oZo S Wwe e esA Č e!đ e RT NTe ı.I I K TTKR OT G Figure 2. Ratio of specific electricity production in EU-27 a US Nevertheless, based on the strategic ...

  • Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)

    Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...
    ... the CS displayed notably more mature sterane and hopane distributions, which are characterized by presence of thermodynamically more stable ααα(S), αββ(S) and αββ(R) steranes, βα- and αβ-diasteranes, neohopanes (C27Ts, C29Ts), the prevalence of αβ- over βα- hopane isomers, and dominance of 22S- relative ...
    ... Ksenija Stojanović | 30th International Meeting on Organic Geochemistry (IMOG 2021) | 2021 | | 10.3997/2214-4609.202134040 http://dr.rgf.bg.ac.rs/s/repo/item/0005555 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... with ααα(R) configuration. Steranes with βαα(R)-configuration, typical for immature diagenetic OM, are identified in the C27–C29 range, while ααα(S) steranes are represented by C29 homologue only. In the hopane distribution C27 17β(H)- and 17α(H)-trisnorhopane, C29–C32 βα moretanes, C29–C32 αβ ...

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... 121.4 × mass proportion of H − 15.3 × mass proportion of O + 10.5 × mass proportion of S [53]; Qn3 = 33.9 × mass proportion of C + 121.5 × mass proportion of H − 12.7 × mass proportion of O + 9.3 × mass proportion of S [53]; Qn4 = 33.4 × mass proportion of C + 117.7 × mass proportion of H − 15.6 × mass ...
    ... 4 × mass proportion of S [55]; Qg—gross calorific value; Qg6 = 33 × mass proportion of C + 120 × mass proportion of H − 16 × mass proportion of O [41]; Qn7 = 35.2 × mass pro- portion of C + 116.2 × mass proportion of H + 6.3 x mass proportion of N + 10.5 x mass proportion of S − 11.1 × mass proportion ...
    ... proportion of O [40,56]; Qg8 = 971 + 323.6 × %C + 711 × %H [57]; Qg9 = (145.44 × %C + 620.28 × %H + 40.5 × %S − 77.54 x%O)/0.429923 [53,55]; Qg10 = (151.2 × %C + 499.77 × %H + 45 ×%S − 47.7 × %O + 27 × %N)/0.429923 [53,58]; Qn = Qg − 21.96 × mass proportion of H [53,59]. Concerning an environmental impact, ...

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Димензионисање система завојних пумпи

    Марија Дивац (2024)
    Овај завршни рад се бави димензионисањем система завојних пумпи (Progressive Cavity Pumps - PCP) које се широко користе у нафтној и гасној индустрији, нарочито за подизање тешких и вискозних флуида. Завојне пумпе су се показале као ефикасно решење у бушотинама са сложеним условима,захваљујући својој способности да транспортују флуиде са високим садржајем чврстих честица и гаса.Рад обухвата анализу кључних параметара као што су вискозност, густина, дубина бушотине и притисак, који су пресудни за избор одговарајуће пумпе.Применом софтверског алата извршена је ...
    завојне пумпе, димензионисање, експлоатација нафте, вискозни флуиди, софтверска симулација, PCP пумпе
    ... 3a paJi IIyMIe: P-Q'·H·p:g, m Ine cy: P – norpe0Ha cHara nyMme (W), Q – nporok (m?/s), H – BHcHHa nojmH3ahba HH IIpHrHcakK (m), p – rycraHa Oonmyuana (kg/m*), g – rpaBHranmuoHa KoHcTaHra (9.81 m/s?), 1) — e(-)HKaCHOCT CHCTEMAa. 3a onmTHMHnalHjy JHMCH3HOHHCAaHba CHCTEMA4, HCOTIIXOJIHO ...
    ... oJipeljiBapbe CHaTe ITyMTIc je: P-Q'·H·p:g, m Ine cy: P – cHara nyMne (W), Q – nporok (inyaana (m?/s), H – npuruacak (m), p – rycraHa Oonmyuana (kg/m*), g – rpaBHranmuoHa KoHcTaHra (9.81 m/s?), 1) — e(-)HKaCHOCT CHCTEMAa. CodQrBepcku anmara 31 mnpopauyH: PumpSizer, CFD camyanuje (Computational ...
    ... New Generation of Progressive Cavity Pump in a High GOR A4rgentinian Heavy Oil Field; 35. Sathyamoorthy, S., Stezn, A., McGilvray, J., Fuchs, H., Ainebyona, B., Kyomugisha, P., Vijapurapu, S., Kagga, N., Rindfuss, R., Basiima, D., 2012., First 4Application of Progressive Cavity Pumps for 4ppraisal ...

  • 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 ...
    Моделирање дисперзије загађења животне средине, дисперзија прашине, АЕРМОД, флотацијско јаловиште
    ... BeTPpa HIO JaTHM IHpaBHMMa 34 HeT aHanH3HpaHHx ronmuHa. |11] Ruža vetrova Ruža vetrova 2011 2012 w E s a N N Wina Speed 2013 2014 w E | Š o N 2011- 2015 w E 080 2015 10 s . s ii Cauka 5.6.- Pyxee BerpoBa a nojipyuje IUbepba [11] 40 V IUĐEBaJbCKOJ KOTJIHHM OOJauHOcT je )OCTa ...
    ... РГФ] Моделирање дисперзије прашине у фази одлагања флотацијске јаловине у руднику “Шупља стијена” | Вања Живановић | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008825 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... Š 200 j | \_ —— Tepwocbepa K pi 100 _ sR i. ·—–-'*/ Mesocbepa EN l——— 50 —— ·_'_'__„_._./·-'·' Crparocboepa Tponocdoepa — — ŠR ON 0 s OIO OO —a —. VO= —0 0 200 &00 600 800 1000 1200 TeMnepaTypa / •C Cnuka 3.1.- Ilonena arMocQbepe 3.2.H3xpopu 3arabema Baytyxa Uucr Ba3jtyx ce ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... Preece & H. Li (Eds.), Natural Language Processing and Information Systems (Vol. 6177, pp. 248-255): Springer Berlin Heidelberg. Justeson, J. S., & Katz, S. M. (1995). Technical ter- minology: some linguistic properties and an algo- rithm for identification in text. Natural Language Engineering, 1 ...
    ... Association for Computational Linguistics - EACL. Rodrıguez, F. M. B., Noya, E. D., Otero, P. G., Martınez, M. L., Mato, E. M. M., Rojo, G., Docıo, S. S. (2007). A Corpus and Lexical Resources for Multi-word Terminology Extraction in the Field of Economy in a Minority Language. Proc. of 3rd Language ...
    ... Biljana Lazić | Proceedings of the 11th Conference on Terminology and Artificial Intelligence, Granada, Spain, 2015 | 2015 | | http://dr.rgf.bg.ac.rs/s/repo/item/0001759 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • 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
    ... 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 mašinskih sistema, Univerzitet ...
    ... 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 Elektroprivrede Srbije, Zbornik radova VIII Međunarodne konferencije ...
    ... mehanzacije Rudarskog basena Kolubara; [4] Janković Ž. Održavanje tehničkih sistema, Univerzitet u Nišu, Fakultet zaštite na radu, 2017.; [5] Maksimović S. Sistem menadžmenta kvaliteta i preventivno održavanje, 32 Konferencija o kvalitetu, Kragujevac, 2005.; [6] Tomašević M. Model za donošenje odluka u procesima ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... 0c00971. Greenough S, Dumont MJ, Prasher S. The physicochemical properties of biochar and its applicability as a filler in rubber composites: A review. Mater Today Commun. 2021; 29: 102912. https://doi.org/ 10.1016/j.mtcomm.2021.102912. Mensah RA, Shanmugam V, Narayanan S, Razavi SMJ, Ulfberg A ...
    ... at 500 "C with a contact time of < 2 s from chopped spruce (Picea spec.) wood chips after drying to a moisture content of less than 10% [67]. HW500f was pro- duced by fast pyrolysis of hard wood in a fluidized bed reactor at 500 "C with a contact time of < 2 s. It was received as a fine powder from ...
    ... 70 3198 ŠSŽ'Š“S 60 2914 = 2900 o 50 589 40 30 20 10 0—— _L | —— — _L _—__—_L— / 4000 3500 3000 2500 2000 1500 1000 500 v/cm1 b) 100 , —— HW500f untreated 90 X ——> HW500f treated with HCI 80 _ 3198 potential CO, 70 3194 Zi_šifgds j 2914 5 64 2845 s 1 2840 j 503 ...

  • Classifying large strains from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    ... Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer | EGU General Assembly 2021, Vienna, Austria, 19.-30.4.2021. | 2021 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005604 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs EGU21-6046 EGU General Assembly 2021© Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Classifying large strains from digital imagery: application toanalogue ...

  • Regional Strike-Slip Structures in the Internal Dinarides: Insights from the Zvornik Fault

    Ana Mladenović, Violeta Gajić, Kristijan Sokol, Dejan Prelević (2024)

  • Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali

    Jovan Obradović (2024)
    Cilj ovog Završnog rada na temu „Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali” jeste dobijanje koordinata tačaka jamskog poligonskog vlaka, kao i prikaz samog rudnika na osnovu detaljnog snimanja jame, kao poprečnih profila podzemne rudničke prostorije. U datom radu biće predstavljene metode koje su primenjene prilikom snimanja, kao i rezultati samih merenja i sva potrebna računanja da bi se došlo do potrebnih koordinata.Merenja za završni rad obavljena su tokom terenske nastave održane u junu 2024. godine ...
    Rudarska merenja, povezivanje, plan jame, poprečni profil
    ... su hipotenuze dužine i i poligonskih strana S;. Na osnovu direkcionih uglova i dužina određuju se koordinatne razlike Ayi1Ax,- Koordinatne razlike računaju se po jednačini: Ay, =S, ·sinv/*! Ax, =S, ·cosy,*1 NAPOMENA: 1) Pošto su dužine S; uvek pozitivne veličine, znaci koordinantnih razlika ...
    ... vrednost koordinatne razlike biti 0 (A,= 0 ili Ayi;= 0), a druga će odgovarati dužini strane (Ay,= S; ili A„ .= S;) (slika 2-15); -zav=0" iliv= 180%, Ay=0; |Ax|=5S; - za v= 90* ili v = 2709, A„=0; |Ay|=S. 25 SLIKA 2-15 – VDREDNOSTI KOORDINATNE RAZLIKE U PRAVOUGLOM KOORDINATNOM SISTEMU; 3) Kontrola ...
    ... dužine strana koje merimo na terenu i na osnovu njih i direkcionih uglova dolazimo do vrednosti koordinatnih razlika po jednačini: Ay, =S, ·sinv,/*1 Ay, =S, ·cosy/* Kada su sračunate koordinatne razlike Ay, i Ax, računaju se koordinate y, i X, poligonskih tačaka, tako što se koordinatne razlike ...

  • 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