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Упит dcterms_subject_txt:Sociology and Political Science

2375 items

  • An Efficient Class of Iterative Root-Finding Methods with Applications

    Dejan Ćebić, Nebojša Ralević (2021)

  • Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia

    Maja Milošević, Bojan Kostić (2021)
    ... xenotime, columbite-tantalite) and accessory minerals that usually incorporate REE (titanite,apatite, and zircon) together with uranium oxide minerals. Other single-phase inclusions are oftenquartz and rutile. Size of inclusion varieties from grain to grain, between 5 and 40 µm, while theirdistribution ...
    ... distributed under the Creative Commons Attribution 4.0 License. Single and multi-phase inclusions in garnets from the Lešnicaalluvion in the Internal Dinarides, Serbia Maja Milošević and Bojan Kostić University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia Inclusions in garnets from the river ...
    ... often found coupled and as multiphase inclusions while monazite,xenotime and columbite-tantalite minerals are observed as separate, single, inclusions. Chondritenormalized REE in the host garnets plotted on spider diagram show extreme depletions of largeion lithophile elements (LILE) and enrichment in high ...

  • Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen

    Nemanja Krstekanić, Liviu Matenco, Ernst Willingshofer, Marinko Toljić, Uroš Stojadinović (2021)

  • The State and Perspective of Belgrade District Heating System Development

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić (2019)
    District heating (DH) system in Belgrade provides energy for heating of more than 21 million m2 in households (app. 50% of all households), public, commercial and industry sectors. Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of ...
    daljinsko grejanje, Beograd, razvoj
    ... 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 Dejan Ivezić is Professor in Energy and Sustainable Development at University of Belgrade – Faculty of Mining and Geology, Head ...
    ... Head of the Center for Energy. He has more than 20 years of experience in research and involvement in Serbian energy planning and policy making. The State and Perspective of Belgrade District Heating System Development Dejan Ivezić (presenter)1, Marija Živković1, Aleksandar Madžarević1, Fethi ...
    ... dependency, primary/final energy consumption, GHG and pollutants emissions). Projections are given and indicators are calculated for 4 different scenarios, analyzing different demand of consumers (BAU, energy efficiency measures, measurement of delivered heat, and payment based on the measured value, etc ...

  • From ELTeC Text Collection Metadata and Named Entities to Linked-data (and Back)

    Milica Ikonić Nešić, Ranka Stanković, Christof Schöch and Mihailo Škorić (2022)
    In this paper we present the wikification of the ELTeC (European Literary Text Collection), developed within the COST Action ``Distant Reading for European Literary History'' (CA16204). ELTeC is a multilingual corpus of novels written in the time period 1840—1920, built to apply distant reading methods and tools to explore the European literary history. We present the pipeline that led to the production of the linked dataset, the novels’ metadata retrieval and named entity recognition, transformation, mapping and Wikidata population, ...
    Wikidata, linked data, SPARQL, distant reading, literary corpus, named entity linking, ELTeC

  • An update on the mineral-like Sr-containing transition metal arsenates

    Tamara Đorđević, Ljiljana Karanović (2021)
    We report on the crystal structures of three novel synthetic SrM-arsenates (M = Ni and Fe3+), isostructural or structurally related to the minerals from tsumcorite, carminite and brackebuschite groups. They were synthesised under mild hydrothermal conditions and further characterised using single-crystal X-ray diffraction (SXRD), scanning electron microscopy with energy dispersive spectroscopy (SEMEDS) and Raman spectroscopy. SXRD and SEM-EDS yielded formulae: (I) SrNi2(AsO4)2·2H2O, (II) Sr1.4Fe3+ 1.6(AsO4)2(OH)1.6 and (III) SrFe3+(AsO4)(AsO3OH). All three structures are built up of slightly distorted MO6 octahedra ...
    арсенати метала, кристална структура, дифракција рендгенских зрака на монокристалима, хидротермална синтеза, Раманова спектроскопија, релевантна једињења у животној средини, арсенeochemistry and Petrology

  • Projected changes in air temperature, precipitation and aridity in Serbia in the 21st century

    Boško Milovanović, Sebastian Schubert, Milan Radovanović, Vesna Ristić Vakanjac, Christoph Schneider (2021)
    In this study, the projected changes of the average monthly and annual air temperatures, precipitation amounts and De Martonne aridity index in Serbia in the 21st century are examined. For that purpose, the spatial distribution of air temperature and precipitation amount is statistically modelled using data of 64 climatologic stations and 421 precipitation stations for the period 1976–2005 using multiple linear regression. The De Martonne aridity index is calculated from the spatially distributed data. In order to obtain regional ...
    21 vek, temperatura vazduha, klimatske promene, De Martonne-ov indeks ardinosti, padavine, Srbija

  • Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia

    Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić (2022)
    The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...
    mine water, hydrogeology, multivariant statistics, groundwater inflow, water quality

  • Petrological and geochemical studies of lignite from the Tamnava West field, Kolubara basin (Serbia)

    Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić (2021)
    ... coal with high huminite. lowerliptinite and low inertinite content. Textinite, ulminite and attrinite are the most abundant huminite macerals. Liptodetrinite, sporinite and suberinite are the most abundant liptinite group macerals., whereas inertodetrinite and fusinite are predominant inertinite maccrals ...
    ... ofBelgrade, Faculty ofMining and Geology, Djusina 7, 11000 Belgrade, Serbia * Corresponding Author: Dragana Živofić (dr daZORU diraD 5 2 Abstract Lignite from ihe Tamnava West held, Kolubara basin (Serbia) was investigated using micropetrography, proximate and ultimate analyses and biomarker proxy. Upper ...
    ... of asphaltenes and polar-NSO compoumdsın bitumen (>901 %) implymg the high proportion of biogenic and diagenelic compoundsexpectable for immature terrestrial organic matter (OM), Diterpenoids are the main constituents of saturated fractions with variable amount of m- alkanes and hopanoids. Content ...

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders

    Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović (2022)
    Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have been intensively studied for several decades because of excellent resorptive and osteoconductive properties that can satisfy the requirements needed for various medical applications, such as bone cements, coatings of metallic implants and bone grafts ...

  • Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia

    Biljana Abolmasov, Uroš Đurić (2021)
    klizišta, monitoring
    ... Faculty of Mining and Geology, Serbia, biljana.abolmasov@rgf.bg.ac.rs 2University of Belgrade, Faculty of Civil Engineering, Serbia, udjuric@grf.bg.ac.rs Background The Umka landslide is the deepest and biggest active landslide in the Republic of Serbia and has been investigated and monitored by ...
    ... will be focused on results and experience gained from automated Global Navigation Satellite System (GNSS) monitoring network data, PSInSAR data analysis from Sentinel1 radar satellite images, conventional geodetic monitoring network data and UAV imaging, processing and data analysis in the last six ...
    ... monitoring: automated GNSS monitorong network, geodetic benchmark survey monitoring, UAV imaging with photogrammetric processing and analysis, and PSInSAR data processing and analysis. Common to all implemented monitoring techniques is to measure displacement of the observed points (dx, dy, dz) on the ...

  • Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2021)
    ... of a foreland-convex orocline, situated in the north and east and a backarc-convexorocline situated in the south and west. The southern orocline of the Carpatho-Balkanides orogenformed during the Cretaceous closure of the Alpine Tethys Ocean and collision of the Dacia mega-unit with the Moesian Platform ...
    ... ing processes, the Carpathianssubduction and Miocene slab retreat in the West and East Carpathians have driven the formationof the backarc-convex oroclinal bending in the south and west. The orocline formed duringclockwise rotation of the Dacia mega-unit and coeval docking against the Moesian indenter ...
    ... South Carpathians and with a large late Oligocene – middleMiocene Circum-Moesian fault system that affected the orogenic system surrounding the MoesianPlatform along its southern, western and northern margins. This fault system is composed ofvarious segments that have different and contrasting types ...

  • Paleomagnetic evidence for post-collisional Miocene clockwise rotation in the Serbian segment of the Vardar Zone and the Danubicum

    Vesna Lesić, Emő Márton, Vesna Cvetkov, Dragana Tomić (2015)

  • New data on Mesozoic Radiolaria of Serbia and Bosnia, and implications for the age and evolution of oceanic volcanic rocks in the Central and Northern Balkans

    Valentina Vishnevskaya, Nevenka Djerić, G.S. Zakariadze (2009)
    Geochemistry and Petrology, Geology

  • Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas

    Predrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić (2016)
    This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – ...
    HPP ''Djerdap 1'', backwater influence, groundwater regime, hydrodynamic analysis, melioration area, drainage system, additional energy engagement

  • A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area

    Filip Anđelković, Dejan Radivojević (2018)
    baden, Beograd, facije, facijalna raznovrsnost, sedimenti
    ... erates  (on  Kalemegdan  and  in Rakovica  stream)  and  poorly  cemented  sandstones  and  sands  (type  locality  is  in  Rakovica  stream).  The  conglomerates  contain  numerous  Ostrea  shells  and  represent  a  basal  series.  According to Anđelković M. and Anđelković J., they mark the second ...
    ... composed of Mesozoic  sediments, ophiolites  and ophiolitic mélange, Cretaceous  to Paleogene  flysch  sediments  and  Lower Miocene  continental  sediments.  The  diversified  basin  basement  and  tectonic  processes during the Badenian led to the horizontal and vertical facial changes. Badenian sediments are  ...
    ... „Leitherkalk“  (Gruber,  1988)  or  „Leitha  limestones“)  and  Rakovica  clastic  sedi‐ ments (sands and conglomerates). There are two additonal facies in the Belgrade area, Višnjica clays and  Konjarnik schlier, but they have limited exposure and were inaccessible at the time of field exploration.  Th ...

  • Evidence for Badenian marine transgression in Belgrade (Serbia)

    Filip Anđelković, Dejan Radivojević (2019)
    ... Tašmajdan limestones, Višnjica clays and Konjarnik schlier (Anđelković M., 1987; Anđelković, M.&Anđelković, J., 1997; Anđelković F. & Radivojević, 2018). Of these, clastics (conglomerates, sands and sandstones) and limestones (mostly subreefal) have the greatest extent and palaeogeographic significance ...
    ... Mediterranean is the cause for the partial isolation and fall of salinity (Rögl, 1999). REFERENCES Anđelković, M. 1987. Geology of the wider Belgrade area – Geology and geodynamics. Institute for regional geology and palaeontology, Faculty of Mining and Geology, p. 428 (in Serbian) Anđelković, M., Anđelković ...
    ... 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 Evidence for Badenian marine transgression in Belgrade (Serbia) Filip Anđelković1 and Dejan Radivojević1 1University ...

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... structure and user interface. 1. Introduction The methodology of mine ventilation planning and design in contemporary Yugoslav mining theory and practice differs substantially from the traditional approach. Novel approaches take full advantage of the possibilities offered by computer hard- ware and software ...
    ... ward and easy manipulation of input data and control over different components of the problem-solving process. Through the interface the system also offers suggestions and recommendations to the user for the improvement of the overall performance of the mine ventilation system (Figs. 12 and 13). ...
    ... Design and Development (Macmillan Publishing Company, New York, 1994). 3. J. S. Kowalik (ed.), Coupling Symbolic and Numerical Computing in Expert Systems (North-Holland, Amsterdam, 1986). 4. N. Lilic, R. Stanković and I. Obradović, A hybrid system for mine ventilation systems planning and analysis ...

  • Dating of alluvial sediments from borehole at the lower course of the Sava river and indications of the connection between their genesis and climate changes in the Pleistocene

    David Mitrinović, Jelena Zarić, Oliver Anđelković, Gyorgy Sipos, Dušan Polomčić, Milan Dimkić (2019)
    This paper analyses the way in which Pleistocene climate change and glaciations in Dinaric Mountains was reflected in the deposition of alluvial sediments in the Sava river Valley, using a case study of Belgrade Groundwater Source (BGS), the largest and most downstream alluvial water supply source along the Sava river. A stratigraphic analysis of the Quaternary sediments from two boreholes on this site, based on sediment dating, lithological members identification, grain size distribution analysis was performed. Comparison with the ...
    Pleistocene, Alluvial deposits, Climato-lithostratigraphy, Sava river, Belgrade groundwater source, Luminescence