Претрага

Упит dcterms_subject_txt:Geotechnical Engineering and Engineering Geology

2389 items

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... provides the infrastructure for successful blending of two major sources of engineering knowledge: 54 the academia and the enterprise. It thus contributes to the important task of preparing university students for their future jobs, but also enables them to improve their academic knowledge after ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.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 ...
    ... , 22-23 September 2014, Belgrade, Serbia USING METADATA FOR CONTENT INDEXING WITHIN AN OER NETWORK University of Belgrade, Faculty of Mining and Geology, ranka.stankovic@rgf.bg.ac.rs, olivera.kitanovic@rgf.bg.ac.rs, ivan.obradovic@rgf.bg.ac.rs ROBERTO LINZALONE, GIOVANNI SCHIUMA, DANIELA CARLUCCI ...

  • Analiza uporednog praćenja temperature površine ohlađenih materijala pri njihovom zagrevanju do ambijentalne temperature

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Katarina Nestorović (2021)
    U datom eksperimentalnom radu su termografskim metodama ispitivane termofizičke karakteristike različitih materijala. Za ispitivanja su izabrani mesingani niovčić, ugalj i pelet, jer imaju različita termoizolaciona svojstava i različito stanje površine. Uzorci su najpre hlađeni, a zatim je njihovo zagrevanje na sobnoj temperaturi praćeno termalnom kamerom. U drugom delu eksperimenta, korišćena je impulsna termografija, a zagrevanje površine uzoraka vršeno je svetlosnom pobudom.
    termografija, impulsna termografija, nedestruktivno testiranje materijala, mesing, ugalj, pelet

  • 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
    ... Gebrüder Borntraeger: Berlin, Germany, 1998. 62. Životić, D. Geology of Coal; University of Belgrade, Faculty of Mining and Geology: Belgrade, Serbia, 2018; pp. 10–13. (In Serbian) 63. Wong, S.; Ngadi, N.; Abdullah, T.; Inuwa, I. Current state and future prospects of plastic waste as source of fuel: A review ...
    ... Canada). TGA-FTIR analysis was done at the Montanuniversität Leoben, Department of Product Engineering. 2.4. Pyrolysis of Lignite, HDPE, and Their Mixture Pyrolysis of initial pre-extracted lignite, HDPE, and their mixture (mass ratio 1:1) was performed in an open pyrolysis system (Pyrolyser, Model ...
    ... 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 polymers Article Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)

    Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović (2024)
    General Materials Science

  • The Newton method for solving nonlinear equations based on aggregation operators

    Nebojša M. Ralević, Dejan Ćebić (2019)

  • 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

  • Одређивање оптималних параметара цевовода за двофазни проток

    Николина Ћурчић (2024)
    Eфикасно управљање протоком флуида је кључно за оптимизацију перформанси система и обезбеђивање оперативне сигурности. Двофазни ток, који подразумева истовремено присуство течне и гасне фазе унутар цевовода и измењивача топлоте, представља један од најсложенијих аспеката динамике флуида. Овај феномен намеће јединствене изазове који захтевају дубоко разумевање и прецизно планирање. Ефикасно управљање двофазним током није само кључно за одржавање ефикасности система, већ је и неопходно за спречавање потенцијалних проблема као што су повећана ерозија, неочекиване флуктуације притиска и ризици по безбедност. У ...
    евовод, оптимизација, двофазни проток, параметри цевовода, трошкови
    ... ions/User- submitted/Why-are-pipelines-safest-way-to-move-energy-products.aspx Engineering, C. (n.d.). 7wo-Phase Flow in Pipelines and Heat Exchangers: A Comprehensive Guide. Retrieved from Converge Engineering Pvt. Ltd: https://converge.net.in/two-phase-flow-pipelines-heat-exchangers/ Guo ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.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 ...
    ... to Oil and Gas Pipelines. Retrieved from FracTracker Alliance: https://www.fractracker.org/2016/06/introduction-oil-gas- pipelines/ Arya, A. K. (2022). A critical review on optimization parameters and techniques for gas pipeline operation profitability. owrma! of Petroleum Exploration and Production ...

  • Mogućnost infracrvene termografije pri detekciji štetnih gasova

    Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković (2021)
    Curenje pojedinih gasova je opasnost koja može da izazove velike nezgode. Često je praćeno požarima i eksplozijama koji za posledicu mogu da imaju kako ljudske povrede, tako i štetan uticaj na ekologiju i ekonomiju. Da bi se izbegle takve situacije, preventivna inspekcija je od presudne važnosti. Curenje većine gasova se ne može uočiti golim okom a za otkrivanje i procenu stepena curenja može se koristiti tehnologija toplotnog snimanja (infracrvena termografija). U datom radu predstavljene su mogućnosti i ograničenja primene ...
    IC termografija, curenje gasa, termogram

  • 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
    ... Production“ Centre for Frontier Engineering Research (C·FER); Fater Rick, (2014). „The Defining Series: Electrical Submersible Pumps“; Gabor Takacs, (2015). „Sucker-Rod Pumping Handbook-Production Engineering Fundamentals and Long-Stroke Rod Pumping“, Petroleum Engineering Department, University of ...
    ... Gabor Takacs, (2018). „Electrical Submersible Pumps Manual Design, Operations, and Maintenance Second edition“; H. Stel, T. Sirino, F.J. Ponce, S. Chiva, R.E.M. Morales, (2015). „Journal of Petroleum Science and Engineering“ 136 (2015) 41—54; Hisham, B., M., Aman, A., (2017). „Investigate a Gas Well ...
    ... Khusainov, F. F. & Shafikov, I. N., (2016) „Electrical Submersible Pumps IN Oil Production and Their Efficiency Analysis“, Ufa State Petroleum Technological University — Faculty of Electrical Engineering and Electrical Equipment, Russian Federation; Kimaraz, Inc., „How Does an Electric Submersible ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... Committee: prof.dr Predrag Jovančić,mentor Faculty of Mining and Geology.,Belgrade doc.dr Miroslav Crnogorac,member Faculty of Mining and Geology.,Belgrade doc.dr Aleksandar Madžarević.member Faculty of Mining and Geology.,Belgrade Defense date: SUMMARY This paper will thoroughly ...
    ... 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 University of Belgrade Faculty of Mining and Geology Master thesis Master Studies Application ...
    ... use in machine learning algorithms. This includes removing unnecessary data, splitting the dataset into training and testing subsets, standardizing the data, and feature engineering. In this study, which deals with logs containing numerous data points, dimensionality reduction methods such as ...

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... Netherlands. E-mail: d.b.t.broerse@uu.nl 2Department of Regional Geology, Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia 3Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands Accepted 2021 March 22. Received 2021 February 16; in ...
    ... resulting deformation with applying distortion and rotation. For example, shearing (simple shear) parallel to x can be achieved by engineering strain γ �= 0. Subsequently, extension or shortening along x can be achieved with stretch parameter a > 1 and 0 < a < 1, respectively. Similarly extension along ...
    ... the resulting deformation with applying distortion and rotation. For example, shearing (simple shear) parallel to x can be achieved by engineering strain y ~ 0. Subsequently, extension or shortening along x can be achieved with stretch parameter a > 1 and 0 < a < 1, respectively. Similarly extension along ...

  • 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

  • Određivanje parametara smičuće čvrstoće tla primenom statističke metode

    Božidar Rudnjanin (2024)
    Određivanje parametara smičuće čvrstoće tla je od ključne važnosti u geotehničkom inženjerstvu jer utiče na stabilnost i nosivost raznih građevinskih konstrukcija. Ovaj master rad obrađuje temu primene deskriptivne statistike za analizu parametara smičuće čvrstoće tla,čime se obezbeđuje osnov za donošenje odluka o planiranju i izvođenju građevinskih projekata.U prvom delu rada, prikupljaju se relevantni podaci o smičućoj čvrstoći tla iz prethodnih laboratorijskih ispitivanja za trasu buduće brze saobraćajnice Novi Sad - Ruma.Ti podaci uključuju vrednosti smičuće čvrstoće i različite faktore ...
    deskriptivna statistika, parametri čvrstoće tla, geostatistika
    ... Definition and determination of characteristic soil properties, In proceedings XII International conference on soil mechanics and geotechnical engineering, Hamburg, 2271-2274. Frank R., Baudin C., Driscoll R. i ostali (2004): Designer's Guide to EN 1997-1 Eurocode 7: Geotechnical Design – General ...
    ... Spross, J., and Larsson, S. (2019). “Characteristic values of geotechnicalparameters in Eurocode 7.” Proceedings of the Institution of Civil Engineers:Geotechnical Engineering, 172(4), 301—311 Samy K. (2003): Stochastic analysis with finite elements in geotechnical engineering, PhD Thesis, ...
    ... u inženjerskoj praksi, Rudarski institut, Beograd. Orr TLL. i Breysse D., (2008): Eurocode 7 and reliability-based design. In reliability-based design in „geotechnical engineering: Computations and Applications. CRC Press, London, UK, 299-344. Pavlović N. ı Lokin P., (2002): Principi inženjerske ...

  • Одређивање резерви нафтног лежишта „Х“ методом материјал баланса

    Александра Петровић (2024)
    Метода материјалног баланса је кључна техника у процени резерви нафте и гаса у лежиштима која омогућава системско прорачунавање доступних резерви. Циљ ове методе је да се прецизно израчунају количине флуида у лежишту на основу доступних PVT података, података о лежишту и производњи. Резултати примене методе материјалног баланса показују да је она ефикасна у пружању кавнтитативних процена, међутим њена тачност зависи од квалитета улазних података. Метода материјалног баланса пружа основу за процену резерви, али може бити подложна грешкама због непрецизности ...
    материјални баланс, прорачун, енергетски режим, притисак, аквифер
    ... S., ikporo, B., 2019. Reservoir engineering fundamentals and applications, Springer . Sečen,J., 2002. Razrada ležišta ugljikovodika, INA — Naftaplin, Grupa za tiskarse i grafičke poslove . Craft, B.C., Hawkins, M., 2015. 4pplied Petroleum Reservoir Engineering, Pearson Education 61 CIHCAK ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.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 ...
    ... JIHTEPATYPE . Ahmed, T., 2019. Reservoir engineering handbook, Gulf Professional Publishing, Elsevier . Ahmed, T., McKinney, P.D., 2005. 4dvanced Reservoir Engineering, Gulf Professional Publishing . Dake, L.P., 1978. Fundamentals of reservoir engineering, Elsevier science B.V. . Okotie, S ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... Abstract The decision making and management in mining engineering are characterized by complexity, variability, ambiguity, sensibility and risk. There are several incentives for such attribution. The first is multi-variability of environmental conditions and the functional and structural complexity of ...
    ... PROMETHEE Group Decision Support System and the House of Quality, Group Decision and Negotiation, Online ISSN 1572-9907, Publisher Springer Netherlands, 2011. 12. Belegendu A. D., Chandrupatla T. R., Optimization Concepts and Applications in Engineering, Cambridge University Press, 2nd edition ...
    ... analysis of possible technologies used for selective mining, conveyance and dumping of solum at coal open pit mines of the Electric Power Industry of Serbia, Annual of University of Mining and geology "St. Ivan Rilski", Part II: Mining and mineral processing, Vol. 47, Sofia, Bulgaria, 2004,197-200. 102 ...

  • Одређивање оптималних параметара рада бушотина у повременом гаслифту

    Радослава Јованчевић (2024)
    Гаслифт представља механичку методу производње при коме се производна бушотина снабдева гасом под високим притиском, а његова притисна енергија се користи како би се подржао еруптивни рад бушотине или након еруптивног рада, у циљу истискивања заосталог флуида. Два основна типа гаслифта су повремени и континуални гаслифт. У овом раду је детаљније описана метода повременог гаслифт система. Одређивање оптималне количине гаса који се утискује и расподела ограничене количине гаса на групу бушотина представља битан део пројектовања сваког гаслифт система. Главни ...
    гаслифт, повремени гаслифт, пројектовање, производња, оптимизација
    ... Journal of Petroleum Science and Engineering 8. Rashid F., 2017. Gas Lift System 9. Rashid K., 2010. Opfimal Allocation Procedure for Gas-Lift Optimization 10. Schlumberger, 1999. Gas Lift Design and Technology 11. Szilas, A. P., 1975. Production and transport of oil and gas 12.IIprHoropan II.M ...
    ... A., 2016. Fundamentals of gas lift engineering 6. Nishikiori N., Redner. R. A., Doty D. R., Schmidt Z., 1989. An Improved Method Jor Gas Lift Allocation Optimization 7. Santos O. G., Bordalo S. N., Alhanati F. J., 2001. Study of the dynamic, optimization and selection of intermittent gas-lift ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.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 ...

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... International Journal of Coal Geology, 112, 141-153, 2013 Naworyta W., Sypniowski S. & Benndorf J.: Planning for reliable coal quality delivery considering geological variability: A case study in polish lignite mining. Journal of Quality and Reliability Engineering, 2015 Stevanović D., Banković ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.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 ...
    ... efficiency of production. It is a complex task that is very often subject to very strict geometric and other practical mining restrictions. These limitations are particularly pronounced in open pit coal mines, and can significantly increase the degree of uncertainty of the mining project, or cause side ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... Proc. of RANLP, pp. 17--23. Bounhas, I., and Slimani Y. (2009). A hybrid approach for Arabic multi-word term extraction. Proc. Of the Natural Language Processing and Knowledge Engineering, 2009. NLP-KE 2009, pp. 1--8. Broda, B., Derwojedowa, M., and Piasecki, M. (2008). Recognition of structured ...
    ... 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 Rule-based Automatic Multi-Word Term Extraction and Lemmatization Ranka Stanković1, Cvetana ...
    ... Cvetana Krstev2, Ivan Obradović1, Biljana Lazić1, Aleksandra Trtovac3 1University of Belgrade, Faculty of Mining and Geology 2 University of Belgrade, Faculty of Philology 3 University Library “Svetozar Marković”, Belgrade E-mail: ranka.stankovic@rgf.bg.ac.rs, cvetana@poincare.matf.bg.ac.rs, ivan ...