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Упит dcterms_subject_txt:Well Modeling

255 items

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    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 ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • Моделирање утицаја одступања линије најмањех отпора од пројектоване на интензитет потреса од минирања

    Стефан Милановић (2024)
    Према дефиницији линија најмањег отпора представља најкраће растојање од центра минског пуњења до слободне површине. Oвим истраживањем представљен је утицај линије најмањег отпора, као и њеног одступања од пројектоване на интезитет потреса услед минирања. Проблем линије најмањег отпора је веома заступљен у пракси, где се занемарује изглед слободне површине, који може бити врло неправилан. Линију најмањег отпора је потребно мерити целом дужином минске бушотине према слободној површини, иако је у пракси случај да се мери најчешће као растојање од ...
    линија најмањег отпора, 3D модел, потреси услед минирања, минирање, слободна површина, метода раздвојених елемената

  • Modeliranje disperzije dimnih gasova iz termoelektrane Kostolac B

    Bojan Živanović (2024)
    Bez hrane se može preživeti nedelju dana, bez vode svega nekoliko dana, međutim, bez vazduha se može preživeti najmanje, nekoliko minuta. Pitanje je kakav uticaj na zdravlje čoveka i okoline ima vazduh koji je lošeg kvaliteta, a kojem je skoro celokupno stanovništvo planete izloženo? Ovaj rad se bavi problematikom modeliranja disperzije dimnih gasova iz novog bloka B3 TE ,,Kostolac’’ B. Ključni momenti koji će biti predstavljeni jesu zagađenje, zdravstveni efekti, modeliranje disperzije i analiza dobijenih rezultata korišćenjem programa AERMOD. Analiziran ...
    zagađenje vazduha, podizanje perjanica, modeliranje disperzije polutanata, TE ,,Kostolac B’’
    ... and environment? This paper deals with the problems of modeling of flue gas dispersion from the new station B3 ofthe “Kostolac B” thermal power station. The key parts that are presented are pollution, health effects, dispersion modeling and analysis of the results by using the AERMOD programme ...
    ... regulativom. Ključne reči: zagađenje vazduha, podizanje perjanica, modeliranje disperzije polutanata, TE „Kostolac B"'. Flue gas dispersion modeling from the B3 block of the Kostolac B power plant Abstract 'Without food a man can survive a week, without water only few days. However, a man ...
    ... will be reduced to 50 mg/m?, which is in accordance with the Serbian and EU directive. Key words: air pollution, plume rise, pollutant dispersion modeling, the “Kostolac B” thermal power station SADRŽAJ IB 014601 b VAAAAAA AAAAAA RAAAAAA || 1.1 Cilj modeliranja ... aaana a aaaeaaaaakaNaNoi 3 ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... Given the variety of applications of RudOnto and in view of the need to secure its functionality within the information system, an UML (Unified Modeling Language) engineering model with a special structure has been developed, whose main features are depicted in Figure 2. Assuming basic familiarity ...
    ... “knowledge domain ontology” [2]. A well known implementation of Semantic Web in education was realized within the AquaRing project [1]. Namely, this project turned to ontologies in order to support annotation and retrieval of educational content, as well as enhanced education and informal learning ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs The Third International Conference on e-Learning (e ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... analyze the data set individually or in smaller groups, depending of the magnitude of the problem. Some of the exercises contain database and GIS modeling tasks aimed at solving problems related to different topics. For example, this year a student group created a GIS of the FMG building. Students ...
    ... postgraduate studies, on the example of a course named InfoTeh, as well as terminological resources developed for this level of studies. In the concluding remarks we present our plans for future upgrading of the existing system as well as for popularization of the use of blended learning technologies ...
    ... teachers who have already realized courses using Moodle, as well as available Moodle functionalities, and functionalities yet to be implemented. From a technical point of view, an upgrade of the hardware platform for Moodle is planed, as well as an upgrade of Moodle to version 2.1. In the course ...

  • Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama

    Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović (2021)
    Zbijanje komunalnog otpada predstavlja jednu od osnovnih faza korišćenja komunalne deponije. Zbog toga je kao i kod drugih nasutih građevina, veoma korisno odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). Dobijeni rezultati mogu da posluže prilikom projektovanja kapaciteta deponije kao i prilikom definisanja obradivosti otpada. U dosadašnjoj praksi najčešći način određivanja parametra zbijanja je standardna metoda (Proktorov opit) koja se koristi u mehanici tla, uz eventualnu redukciju energije zbijanja. Međutim, različiti tretmani komunalnog otpada na ...
    deponija komunalnog otpada, zbijanje, Proktorov opit, malj sa šiljcima
    ... Navcen, B.P.: Geotechnical Properties of Fresh Municipal Solid Waste Landfill in India, 7Ћ lInternational Conference on "Experiments/Process/System/Modeling/Simulation /Optimization, Афепз, Greece Vol. 2017. Pulat H.F., Yukselen-Aksoy Y.: Сотраспоп behavior of synthetic and nmatural MSW хатрјек in ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs БАУЕ7, GRAĐEVINSKIH INŽENJERA SRBIJE UDK: 624(059) ISSN 0352-2733 ...
    ... maximum dry unit weight (ydmax) and optimal moisture content (Wopt). The obtained results can be изед in designing the capacity ог the landfill as well as when defining the workability of waste. In current practice, ће most common method ог determination compaction parameters is by standard method ...

  • Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj

    Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)
    ... susceptibility ma- pping: Sultan Mountains, SW Turkey. Journal of Asian Earth Sciences 64, pp.180-197, 2013. [23] Regmi NR, Giardino JR, Vitek JD. Modeling sus- ceptibility to landslides using weight of evidence approach: Western Colorado, USA. Geomorpho- logy 115, pp.172-187, 2010. [24] Saaty TL. ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs IZGRADNJA 71 (2017) 7–10, 239–246 239 1. UVOD Procene podložnosti ...

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... a la Ingeniería, 2008. (http://nora.nerc.ac.uk/3817/1/EUROENGEO_2008_Kessler_et_al.pdf) QIANG, W. et. alii. An effective method for 3D geological modeling with multi-sour- ce data integration. Computers & Geosciences, n. 31, p. 35-43, 2005. SCHOFIELD, W., BREACH M. Engineering surveying. UK: Elsevier ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 323 Aleksandar Milutinovic et al. REM: R. Esc. Minas, Ouro ...
    ... of the mining project, it is necessary to carry out a series of mining and surveying tasks during the pre-project and project stage of mining, as well as during the construction of mining facilities and excavation of mineral resources. Speci�c features of the project concerning excavation of the ...

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e physical-archaeological modeling tech- niques, First Break, 21, 2: 51-61. Eppelbaum, L. 2010. Application of Potential Geophysical Fields at Archa- eological Sites in Israel: An ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 14 ZNAČAJ GEOGRAFSKE ŠIRINE ZA LOCIRANJE UZROČNIKA MAGNETNIH ...

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... CAM-B3LYP density functional [60], together with the 6-311++G(d,p) basis set [61,62]. TD-DFT calculations were performed with ORCA 5.0.3. molecular modeling, package developed by Prof. Frank Neese and coworkers [63—70]. Input files for TD-DFT analyses were prepared with the online ORCA input generator ...
    ... Kinetics, mechanism and toxicity of intermediates of solar light induced photocatalytic degradation of pindolo]: Experimental and computational modeling, approach. J. Hazard. Mater. 2020, 393, 122490. [CrossRet] Kostić, A.J.; Kanas, N.; Rajić, V.; Sharma, A.; Bhattacharya, S.; Armaković, S.; Savanović ...
    ... that the crystallite size (1251(35) A) and lattice strain (0.16(2)%) values point to well-crystallized material with a significant lattice strain. SEM micrographs show that hexagonal-shaped platelets with well-defined morphology were obtained as substantial entities with diameters in the range ...

  • Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije

    Branko M. Petrović (2016-07-12)
    Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...
    površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija
    ... length of BWE boom, as well as its impact on the structure of the excavator, the thesis defines the overall research methodology of this issue to the analysis and systematization of current knowledge and research results in this area. In this thesis were used modeling methods of excavator boom ...
    ... boom, working environment modeling and modeling of operating machinery with the use of real data from the opencast mines of MB KOLUBARA and field measurements of the dynamic behavior of excavator during operation. Implementation of such designed methodology for optimization of BWE’s ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs UNIVЕRZIТЕТ U BЕОGRАDU RUDАRSKО - GЕОLОŠKI FАKULTЕT ...

  • Analiza softvera za projektovanje ESP sistema

    Aleksandar Sredojević (2024)
    U momentu kada pritisak na dnu bušotine nije dovoljan da savlada ukupne gubitke pritisaka od dna bušotine do separatora, proizvodnja pomoću ležišne energije nije više moguća i bušotina prestaje sa eruptivnim radom. Kako bi ponovo omogućili proizvodnju fluida iz bušotine, potrebno je primeniti neke od mehaničkih metoda eksploatacije. Najprimenljivije mehaničke metode eksploatacije su: gas lift (GL), dubinske pumpe sa klipnim šipkama (SRP), električne uronjene centrifugalne pumpe (ESP), zavojne pumpe (PCP) i hidraulične pumpe (HP). Jadna od tih metoda koja ...
    električna centrifugalna pumpa (ESP), proizvodnja fluida, mehaničke metode eksploatacije, Prosper, Pipesim
    ... Zagrebu, Rudarsko-geološko-naftni fakultet; Zhu, J. & Zhang H.Q. (2018). „A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps“, project: Mechanistic modeling in Electrical Submersible Pumps (ESP); 77 O0pasau 1 H3JABA O AVTOPCTBY J3ABPII(IHOT PAJIA Me ...
    ... PercentN2 5,51 Pb, Rs, Bo Correlaton Glaso- | Od Viscosity Correlaton Beal et al Other Data Viscosity | Emuson | Pumo |O OaL _JI Viscosity Modeling Viscosity Model [Newtonan Fiud. . Bergman-Sutton,_|_De Ghetto_|_De Ghetto Nod Standard Parameter 1 | Parameter 2| Deviaton ResetAl OdVacosty ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Univerzitet u Beogradu Rudarsko-geološki fakultet Master ...

  • 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)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... and Transtensional Tectonics, Special Publications 135. Geological Society, London, pp. 15–33. Fossen, H., Tikoff, G., Teyssier, C., 1994. Strain modeling of transpressional and transtensional deformation. Nor. Geol. Tidsskr. 74, 134–145. Fügenschuh, B., Schmid, S.M., 2005. Age and significance of ...
    ... 2011. The effect of convergence angle on the kinematic evolution of strain partitioning in transpressional brittle wedges: insight from analog modeling and high-resolution digital image analysis. Tectonics 30, TC2013. https://doi.org/10.1029/ 2010TC002823. Lesić, V., Márton, E., Gajić, V., ...
    ... since the late Cretaceous. Tectonophysics 675, 103–140. Menant, A., Sternai, P., Jolivet, L., Guillou-Frottier, L., Gerya, T., 2016b. 3D numerical modeling of mantle flow, crustal dynamics and magma genesis associated with slab roll-back and tearing: the eastern Mediterranean case. Earth Planet. Sci ...

  • Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area

    Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić (2016)
    jurski sedimenti, uran, torijum, elementi retkih zemalja, podzemna voda, istočna Srbija

  • 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

  • Primena digitalne fotogrametrije u rudniku Rudnik

    Nikola Mirković, Luka Crnogorac, Katarina Urošević (2023)
    Digitalna fotogrametrija, lasersko skeniranje i virtuelizacija sve više pronalaze aktivne uloge u rudarstvu, prvenstveno zbog svoje široke mogućnosti primene. Laserskim skeniranjem i fotogrametrijom snimaju se i kreiraju 3D modeli otkopa, jamskih hodnika, površinskih kopova, površinskih objekata (zgrada, spomenika, predmeta), a vrši se skeniranje celih rudnika koji se rekonstruišu u 3D digitalne modele. Fotogrametrija predstavlja proces fotografisanja objekata pomoću fotoaparata i daljom obradom fotografija u različitim softverskim alatima kreiraju se realne kopije 3D modela objekata ili predmeta u digitalnoj formi. Za ...
    digitalna fotogrametrija, prostorna vizuelizacija, rudarski objekti, podzemna eksploatacija
    ... 2015. [4] VIRTUALMINE · „(2023) - #Website Accessed · [10.07.2023.], Available · online 119 [https://virtualmine.net/index.html| – as a modeling tool for Wider Society Learning [5] Janeras, M., Roca, J., Gili, J. A., Pedraza, O., Magnusson, G., Nufiez-Andrćs, M. A., & Franklin, K. (2022) ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs XI MEĐUNARODNA KONFERENCIJA UGALJ I KRITIČNI MINERALI 2023 ...
    ... objects or tools are created in digital form. For the development of high-quality 3D models, it is necessary to provide top-quality laser scanners, as well as supporting computer equipment (hardware and software) that can quickly process a huge amount of data and form high density point clouds. The a ...

  • Multiword Expressions between the Corpus and the Lexicon: Universality, Idiosyncrasy and the Lexicon-Corpus Interface

    Verginica Barbu Mititelu, Voula Giouli, Kilian Evang, Daniel Zeman, Petya Osenova, Carole Tiberius, Simon Krek, Stella Markantonatou, Ivelina Stoyanova, Ranka Stankovic, Christian Chiarcos (2024)
    Predstavljamo trenutne aktivnosti na definisanju interfejsa leksikona i korpusa koji će služiti kao referenca u prikazu polileksemskih jedinica - višečlanih izraza - (različitih tipova - imenskih, glagolskih, itd.) u specijalizovanim leksikonima i povezivanju ovih unosa sa njihovim pojavljivanjima u korpusima. Konačni cilj je korišćenje ovakvih resursa za automatsko identifikovanje višečlanih izraza u tekstu. Uključivanje nekoliko prirodnih jezika ima za cilj univerzalnost rešenja koje nije usredsređeno na određeni jezik, kao i prilagođavanje idiosinkrazijama. Raspravljaju se izazovi u leksikografskom opisu višerečnih ...
    multiword expression lexicon, corpus, proof-of-concept lexicon encoding