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Упит dcterms_subject_txt:data correlation

263 items

  • Numerical modelling of the roughly simultaneous emplacement of two distinct ophiolite belts

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • 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
    ... 985 mantle flow in models (Funiciello et al. 2006). Similar correlation techniques are used to detect near step-wise displacements from coseismic deformation using optical satellite imagery (Kääb et al. 2017; Sotiris et al. 2018), SAR data (Morishita et al. 2017) or a combination of both (Lauer et ...
    ... provide a solution for temporary data gaps, by integrating PIV and the estimation of Lagrangian displacements, while applying PIV not strictly sequential. In this PIV approach, the reference image is not updated every time step, but only when the loss cross-correlation, due to cumulative deformation ...
    ... inversions of SAR and optical data, J. geophys. Res., 125(7), doi:10.1029/2019JB018380. Le Corvec, N. & Walter, T.R., 2009. Volcano spreading and fault interaction influenced by rift zone intrusions: insights from analogue experiments an- alyzed with digital image correlation technique, J. Volc. Geotherm ...

  • 2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem

    Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov (2019)
    2D inversion, geoelectrical method, Wenner array, ecology, Ada Huja
    ... possibility of renewing already acquisitioned data using new and improved software capabilities. The potential to gather 3D inversion results from 2D acquisitioned data is one of many new software options that were not available twenty years ago. Data obtained by ground penetrating radar (GPR) using ...
    ... geometry have shown its full potential in the form of needed funds, reliability and acquisition speed. Further surveys showed a good correlation between the borehole data and 2D inversion process. The location of the surveyed area is a very interesting terrain in a form of civil engineering opportunities ...
    ... the degree of possible environmental pollution are one of many reasons why it was crucial to reinterpret the 2D inversion data. Two decades after the initial scanning the data was used to solve the eco-geological problem which is a side effect of the decade long disposal and non-aiding of the communal ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings

    Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović (2024)

  • Numerical modelling of a single intra-oceanic subduction for the origin of the Balkan ophiolites

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... al., 2014). All of these various susceptibility models have their advantages and disadvantages in relation to the reliability of data sources, questionable correlation with landslide development (for example the use of distance to road or distance to drainage fac- tors), subjectivity of the engin ...
    ... These include the inability to use it for a coarser scale analysis where more exact correlation between the landslide con- ditioning factors and landslide occurrences needs to be supported by detailed statistical data, rainfall thresholds, and exact earth- quake intensities during sliding events. Another ...
    ... a clearly visible outline on some of the aforementioned data sources. For some of the landslides, published newspaper data was checked and data on their precise location was then confirmed by local residents. Un- fortunately, the exact date of occurrence is known for only a very small number of ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... altered dacite and is defined by the Equation (3) (R2 = 0.62) σci UCS = −0.058 × AD + 39.24 (3) The correlation coefficient in the first zone is R2 = 0.93, which is classified as an excellent correlation [22]. However, the diagram clearly shows the line does not pass through a set of points for 0% and ...
    ... ‘Ćeramide’ near Rudnik in the Exploitation Field; Technical Report for Jantar grupa d.o.o.: Pancevo, Serbia, April 2020. 12. Tuğrul, A.; Zarif, I. Correlation of mineralogical and textural characteristics with engineering properties of selected granitic rocks from Turkey. Eng. Geol. 1999, 51, 303–317. ...
    ... Properties of Composite Structures Made of a Cement-Tailing Backfill and Rock Core. Minerals 2020, 10, 159. [CrossRef] 22. Mavrinac, M.; Bilić, L. Correlation and Linear Regression; Medicinska Naklada: Zagreb, Croatia, 2010. 23. Hoek, E.; Brown, E. The Hoek–Brown failure criterion and GSI—2018 edition. ...

  • 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
    ... | Thermal UNDERSATURATED OIL MIXTURE Correlation: Vasquez & Beggs +| Emulsion viscosity method: Set to viscosity of the continuous ph... + UVE OIL Inversion watercut: (%) Specify _ () Calculate Correlation: Chew & Connally - 60 % DEAD OIL Correlation: Begos & Robinson Temperature (1st): · ...
    ... TIIparucak 3acuhema (bar) 68 TIIpnurucak Ha nny (bar) 32,2 IIocnenmmba H3MepeHa npon3B0/Uba (m3/dan) | 15,6 Taoena 2 KPAKTEPHCTMHKE IIYMIIE TFa6apur nymne 12 Howmuna;iHa rpouH3B0o/uba (m3/dan) 5 Hanop koju nyMrna MO;Ke Ja ocrBapu (m) 1500 JlyoHHa yrpa;ube (m) 735 ODpeknenmuja (Hz) 12,5 ...

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Is the Sava-Vardar zone a remnant of an Upper Cretaceous ocen? Pro et contra

    Vladica Cvetković, Dejan Prelević, Ana Mladenović (2024)
    Neotethys, ocean closure, subduction
    ... D., Figenschuh, B., Matenco, L., Schefer, S., Schuster, R., ... & Ustaszewski, K. (2008). The Alpine-Carpathian-Dinaridic orogenic system: correlation and evolution of tectonic units. Swiss Journal of Geosciences, 101, 139-183. 3. Prelević, D., Wehrheim, S., Reutter, M., Romer, R. L., Boev ...
    ... magmatic rocks originated within an Upper Cretacecous ocean floor can be systematized into three groups: 1) Numerous new geochemical and geological data suggest that the SVZ magmatic rocks are not truc ophiolites . but products of more heterogeneous intracontinental magmatism. Even the most oph ...

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • 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

  • Палеогеографска реконструкција јадарског блокатоком млађег палеозоика

    Весна Цветков (2018)
    ... ротацијом. Правац и смер ротације средњег вектора ChRМ наводи на закључак да је блок део Гондванског промонторија. Чињеница да положај VGP блока одступа свега неколико степени од APWP Африке, додатно доприноси ставу да Јадарски блок поседује Афрички афинитет. Седименти средњег карбона депоновани ...
    ... ом раседу тзв. Зворничком шаву (ДИМИТРИЈЕВИЋ, 1995), за који КАРАМАТА (2006) сматра да је офиолитски шав између континенталног Дринско- ивањичког и Јадарског терана, док SCHMID И САРАДНИЦИ (2008), сматрају да је Зворнички шав северозападни продужетак дугачког појаса сенонског флиша који маркира ...
    ... Резултати палеомагнетних испитивања указују да је Јадарски блок током девона и млађег палеозоика мигрирао од високих јужних до ниских северних палеоширина. После девона и доњег карбона северно кретање се успорило и блок долази у област палеоекватора, да би га током горњег перма прешао. Корелацијом ...

  • Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)

    Dejan Radivojević, Ljupko Rundić (2017)
    ... 2010, PIGOTT & RADIVOJEVIĆ, 2010, MATENCO & RADIVOJEVIĆ 2012, MAGYAR et al., 2013). °e database consisted of numerous seismic data, both 2D and 3D, and exploration wells data allowed building of subsurface model of explored area. Special emphasis was placed on the Miocene sediments which are the most ...
    ... 2010, PIGOTT & RADIVOJEVIC, 2010, MATENCO & RADIVOJEVIG 2012, MAGYAR et al., 2013). The database consisted of numerous seismic data, both 2D and 3D, and exploration wells data allowed building of subsurface model of explored area. Special emphasis was placed on the Miocene sediments which are the most ...
    ... JOVANČIĆEVIĆ, B., VITOROVIĆ, D., GOLOVKO, Y., PEVNEVA, G. & GOLOVKO, A. (2007): Evaluation of saturated and aromatic hydrocarbons oil–oil maturity correlation parameters (SE Pannonian Basin, Serbia). J. Serb. Chem. Soc., 72/12, 1237–1254. ŠOLEVIĆ, T., STOJANOVIĆ, K., BOJESEN‐KOEFOED, J., NYTOFT, H.P. ...

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... and the gearbox. However, the selection and construction of the excavator parts were performed on the ground of available laboratory data for digging resistance. The data itself was determined by the testing methodology that did not include the influence of surrounding water pressure at a certain depth ...
    ... coefficient of determination, r2, and the Pearson’s correlation coefficient, r, was determined by approximating the cutting resistance test results with a linear function (Table 4). The values of Pearson’s coefficient, r, indicate a significant correlation between the values of the measured cutting resistance ...
    ... and the gearbox. However, the selection and construction of the excavator parts were performed on the ground of available laboratory data for digging resistance. The data itself was determined by the testing methodology that did not include the influence of surrounding water pressure at a certain depth ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... and vicinity of populated areas). The total procedure to obtain all permits related to exploration is usually 1–6 months depend- ing on required data. All data on protected areas are available online [64]. For the land use changes necessary for exploitation of a mineral deposit two manda- tory docum ...
    ... D.; Eloranta, T.; et al. Deliverable 1.4: Draft good practice guidelines for harmonisation of resource and reserve data. In Optimizing Quality of Infor- mation in RAw MAterial Data Collection across Europe—ORAMA; European Commission: Luxembourg, 2019; p. 90. Available online: https://ec.europa.eu ...
    ... ed classifications. As D1 and D2 Serbian reserves are in fact mineralisation, it will not be discussed fur- ther. Occasionally, problems with correlation started with C2 reserves, i.e., inferred re- sources. In Serbia, C2 category is usually not supported by exploration results as that cat- egory of ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje

  • Opremanje bušotine X zavojnom pumpom

    Milan Filipović (2024)
    Ovaj rad se bavi osnovnim pojmovima i karakteristikama zavojnih pumpi.Prikazan je sklop zavojnih pumpi i njena prateća oprema. Objašnjen je princip rada zavojnih pumpi kao i uloga svakog mašinskog elementa koji se nalazi u pumpi. Razmotrene su prednosti i nedostaci primene ovih primarnih mehaničkih metoda eksploatacije ugljovodonika. Dat je uvid u inovativna rešenja problematike primene zavojnih pumpi. Na konkretnom primeru bušotine X su prikazani problemi kao i rešenja primene ovih primarnih mehaničkih metoda u praksi. Napravljena je detaljna analiza ...
    zavojne pumpe, oprema, primarne mehaničke metode, ugljovodonici, analiza rada
    ... Name: Black Oil Description: Properties ' Viscosity | Calibration | Thermal UNDERSATURATED OIL Correlation: 'Vasquez & Beggs LIVE OIL Correlation: Chew & Connall& DEAD OIL Correlation: Beggs & Robinson Temperature (1st): |68 degC Viscosity (1st): 0.007206577 |kg/(m.s) Temperature ...
    ... rada pumpe. Potreba za mehaničkom metodom koja Je sposobna da proizvodi viskozni i abrazivni fluid je bila evidentna u Južnoj Americi osamdesetih godina. Razvoj tehnologija izrade pumpi i tehnologija materijala su doprineli da se do dana danas primenjuju inovativna rešenja za probleme proizvodnje ...
    ... pogonskom sklopu ove dve pumpe je u reduktoru koji mora da smanji broj obrtaja na određen broj koji Je potreban za funkcionisanje zavojne pumpe. Opšte je poznato da se ESP okreće većim brojem obrtaja od zavojne pumpe. Na slici 5 je dat uporedni prikaz ESP I zavojne pumpe I njihovog pogonskog ...

  • 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
    ... The MCC ranges from -1 to 1: 1 indicates a perfect correlation (all predictions are correct), 0 indicates no correlation (no relationship between predictions and actual results), -1 indicates a perfect negative correlation (all predictions are incorrect). TP*TN-FP*FN MCC = V(TP+FP)*(TP+ ...
    ... learned models to predict labels on unlabeled data. Predicted data with high confidence are added to the training set as pseudo-labeled data for further training. If the model recognizes certain patterns in the unlabeled data that are similar to labeled data, it can use them for further training and ...
    ... nodes are data points and edges represent similarity between them. The model propagates information through the graph to label unlabeled data based on the labels of their neighbors. If some data are labeled as "normal," the model can use the similarity between unlabeled data and labeled data to assess ...