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Упит dcterms_subject_txt:data correlation

263 items

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... deviation (o) to the mean ( x ). The original experimental data are processed, analyzed and evaluated using the following mathematical and statistical methods: factor impact on the plant characteristics (variance analysis) and correlation analysis of plant characteristics with the use of the statistical ...
    ... the experimental data processing, analysis and evaluation of the research results enabled the correct understanding of all results. Significance was calculated based on LSD test for probability levels 0.05% and 0.01%. Relative dependence was defined by method of correlation analysis and stability ...
    ... some of the most interesting data, with special emphasis on the unwashed aboveground parts as very useful biomonitoring tools but also, we performed some additional analyses and comparisons between them (using one-way analysis of variance, the Pcarson”s correlation study, and hierarchical cluster ...

  • Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides

    Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)
    Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis
    ... Camp. Paleozoic diagram of the strike of F, fold axis orientation. Number of measured data for each azimuth slice is indicated. c Rose diagram of the strike of F fold axis orientation. Number of measured data for each azimuth slice is indicated. d Simplified stratigraphic column of the study area ...
    ... !!!%! 9 Phr: 06526 Phi:0,403. Fig. 5 Stereographic projections of fault-slip data collected in the study area. The locations of measurements are indicated by the number in the top right corner of the boxes. The data are grouped according to the distinguished deformation phases (Dx strike-slip ...
    ... metamorphism. For sample locations see Fig. 2a We examined several samples with both IC and K/Ar methods. The two parameters show a strong correlation. The trend of the regression line (Fig. 6b) implies that the K/Ar ages become younger with a decrease of the KI values. The decrease in KI ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... samples (Triassic shale 0.78 % Rr and Neogene coal 0.34% Rr) are in good correlation with the T max parameter from Rock-Eval pyrolysis. T max generally shows lower values in most Mesozoic samples. The organic petrographic data indicate that specific kerogen in Cretaceous and some Triassic sedimentary ...
    ... group, pro- vided the most reliable data. More than 450 measurements were made, and the mean re�ectance was 0.34% Rr (lignite coal rank). �ese are also the �rst results on vitrinite/humi- nite re�ectance of the Gacko coal, as no such data have been published to date. DISCUSSION �e �rst results on ...
    ... group, pro- vided the most reliable data. More than 450 measurements were made, and the mean reflectance was 0.34% Rr (lignite coal rank). These are also the first results on vitrinite/humi- nite reflectance of the Gacko coal, as no such data have been published to date. DISCUSSION The first results on ...

  • 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

  • Palaeoflora of Kamenica (Pranjani Basin, western Serbia)

    Zorica Lazarević, Ljubica Milovanović, Jelena Milivojević, Ivana Vasiljević (2019)
    Palaeofloras of the Paleogene in Serbia are relatively rare, especially in comparison with floras from Neogene sediments. Most Paleogene phytoas sociations from the territory of Serbia existed in a dry and warm climate. The youngest Paleogene phytoassociation originates from the Pranjani Basin (Western Serbia), locality Kamenica. The age of this palaeoflora is determined as Late Oligocene. This fossil plant assemblage is different from other Paleo gene phytoassociations.The palaeoflora from Kamenica is characterized with leaf imprints larger than in other ...
    макрофлора, млађи олигоцен, Прањански басен, Каменица
    ... central Graben sank the most, over a relatively wide area. (MarOvIć et al., 2007). a gravity anomaly map (Fig. 2) was compiled in order to check the correlation between the position of Neogene basins and the distribution of gravity anomalies. Neogene basins are filled with sediments of low density, in comparison ...
    ... Каменичке реке у селу Каменица. Лисни отисци су из сивих, табличастих лапораца који леже преко серпентинита. Лисни отисци су добро очувани и указују на то да је палеовегетација највероватније егзисто - вала у близини некадашњег језера. Палеофитоасоцијација Каменице се кара кте - рише лисним отисцима који ...
    ... Daphnogene, у флори Каменице ови флорни елементи су мање при - сутни. На основу дрвенастих дикотиледоних скри - веносеменица из Каменице може се рећи да је клима у време егзистовања ове вегетације била топла и влажна, суптропско-тропска. Овако по - ољни климатски услови погодују биљној ас - оцијацији ...

  • Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata

    Dejan N. Radivojević (2014-12-30)
    Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...
    Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika
    ... (Eds.): Neogene of the Mediterranean Tethys and Paratethys. Stratigraphic correlation tables and sediment distribution maps,Inst. Paleont., Univ. Vienna, v. 1, p. 73–74. Rögl, F., 1996, Stratigraphic correlation of the Paratethys Oligocene and Miocene, Mitteilungen der Gesellschaft der ...
    ... to da su oni pretaloženi. Mekušci su mnogo manje skloni pretaloženju, ali su isto tako i veoma retki. Glavna karakteristika ovih sedimenata u Mađarskoj jeste da su oni prisutni, ali i veoma raštrkani (Magyar et al., 2004). Postoje dva moguća objašnjenja za ovakav model. Prvo objašnjenje je da je ...
    ... ukazuje na to da je 7 km dubok Mako trog formiran duž detačmenta velikih razmera (pada ka istoku) i da se ekshumacija krupnog bloka metamorfita (Alđe) odigrala u vreme srednjeg miocena (Tari et al., 1999). Nedavna interpretacija ukazuje na to da su najdublji sedimenti ...

  • 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
    ... temperature. The results of Raman spec- troscopy did not well correlate with the amount of sp? hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in ...
    ... permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Data Availability Statement: All relevant data are Within the paper and its Supporting information files. Funding: The authors report the following funding: Project 2173 ...
    ... with maxima between 1563 (M200h) and 1588 cm ! (HW1100g) arising from the vibration of sp-bonded carbon atoms (Exg mode) [107]. No reli- able correlation could be found for the crystallite size or the peak maxima of the series of chars from different processes neither with the temperature of production ...

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)

    Howard R. Feldman, Barbara V. Radulović, Fayez Ahmad (2023)
    Brachiopods, Middle Jurassic, Sphriganaria, shell microstructure, Ethiopian Province

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... where rejected based on correlation between Ash and LCV (Figure 4). Figure 4. Preliminary statistic analyses of Ash/LCV corelation 2.1.2. Geological Modeling The geological model for Tamnava West was developed using the Minex software package with the data provided by EPS. To provide ...
    ... from BpUBS (Integral data base of Serbian Coal Basins). This database stores all exploration drilling data from Kolubara Coal Basin, such as: basic information about drill hole (collar data), complete lithology and assaying data, geotechnical, hydrogeological, geophysical data. This system can ...
    ... Preparation of data - Geological modeling - Ultimate pit design - Design of pit benches - Discretization of benches on mining blocks and cuts - Reporting 2.1.1. Preparation of data For the purpose of importing in Minex, the data went through many transformations. Borehole data where obtained ...

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... local development. Studying of rockfalls primarily relies on historic data on their: spatial context; volume; frequency/return periods; runout and velocity. In practice, this is rarely as systematic as it should be, and data are usually scarce. Modeling and simulation is another tool that can be ...
    ... compensate for the lack of specific data [1]. Suspicious rock faces can be monitored for longer periods, using multiple monitoring systems (primarily Terrestrial Laser Scanning - TLS), seasonally or annually, or even in real-time. This provides systematic data for better understanding of the (pre)failure ...
    ... collected by using external, High-Definition cameras to obtain better results. 3.2. Data acquisition The first couple of years of the slope monitoring were experimental with unregular and not as systematic data acquisition. This period was used to establish standard protocol and decide on resolution ...

  • Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty

    Miloš Gligorić, Jelena Majstorović, Suzana Lutovac (2018)
    ... f a n is o tr o p y , % Number of directions Degree of anisotropy for each special direction icluding all of the anisotropic samples DAj,max DAj,min 0.0 20.0 40.0 60.0 80.0 100.0 120.0 1 2 3 A n is o tr o p y c o e ff ic ie n t, % Number of directions Anisotropy coefficient ...
    ... the quantitative indicators of anisotropy would be of great use for creating reliable models. Further researches can be related to determine correlation between other mechanical properties such as Young’s modulus, Poisson’s ratio, bulk density and compressive strength in order to create an dynamic ...
    ... inexperience of workers. Due to these problems, sometimes the results of measurements are not so accurate and precise. Presence of vague and imprecise data is the basic indicator of uncertainty. In order to overcome these problems it is necessary to apply interval numbers. Interval numbers provide a ...

  • Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition

    Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)
    Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...
    hidrogeotermalni sistem, gornjokredni krečnjaci, trijaski mermeri, Brus

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...
    Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinica

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... technical systems, it is necessary to fuzzify the input data. The process of fuzzification is applied based on the data received for Symmetry 2020, 12, 525 6 of 26 a failure (more details on fuzzification can be found in Section 3.2). Data on the failure of components in an engineering system can ...
    ... risk was assessed for five characteristic failures. These characteristic failures were based on data on the types of failures that occur within the subsystems and elements. 4.2. Data Collection Data related to the type of failure and the time between failures were obtained from a thorough analysis ...
    ... model, is the absence of empirical data. Some companies did not develop the data acquisition system for the time picture state of the equipment in use. In such conditions, this model is impossible to apply in its present form and it is necessary to implement the data as expert opinions. A system with ...

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver