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Упит dcterms_subject_txt:information science

720 items

  • Uticaj geološke neizvesnosti u razvoju rudarskih projekata

    Petar Marković, Dejan Stevanović, Mirjana Banković (2023)
    Rudarstvo je industrija koja se nosi sa različitim vrstama neizvesnosti i rizika zbog svoje prirode i specifičnosti. Neizvesnost u rudarstvu može poticati iz različitih izvora i uticati na različite aspekte rudarskih projekata. Kao jedan od dominantnih faktora, ističe se geološka neizvesnost. Geološka neizvesnost igra ključnu ulogu u rudarstvu i može značajno uticati na procenu resursa i rezervi, planiranje eksploatacije, ekonomsku isplativost i upravljanje rizicima. Ova neizvesnost se ne može eliminisati, ali se uz primenu adekvatnih standarda i zakona može ...
    ... (2013). Stochastic long-term production scheduling of iron ore deposits: Integrating joint multi-element geological uncertainty. Journal of Mining Science , 49, 68-81. [4] (2014). CIM Definition Standards For Mineral Resources and Mineral Reserves. Canadian Institute of Mining, Metallurgy and Petroleum ...

  • Strukture kristala - odabrana poglavlja iz kristalografije i njena multidisciplinarnost

    Ljiljana Karanović (2024)
    Kristalografija

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova

    Daniel P. Kržanović (2016-06-14)
    Optimizacija graničnog sadržaja metala u rudi jedan je od osnovnih koraka u planiranju i dizajniranju površinskih kopova i ima za cilj postizanje maksimalne neto sadašnje vrednosti (NPV). Iz tog razloga, optimizacija graničnog sadržaja i danas je predmet mnogih istraživanja u rudarskoj nauci, sa ciljem rešavanja praktičnih problema u eksploataciji ležišta.Dugoročno planiranje eksploatacije na površinskim kopovima podrazumeva sagledavanje svih relevantih parametara i faktora (geologije rudnog ležišta, tehnologije proizvodnog procesa, kapaciteta otkopavanja i prerade, troškova, cena metala, iskorišćenja i dr) kako ...
    površinski kop, dugoročno planiranje, optimizacija graničnog sadržaja, maksimizacija neto sadašnje vrednosti (NPV).
    ... for open pit mining considerations, Journal of Engineering Applied Science, 21, pp. 119-127. Mohammad, W.A., 2003, Generalized cutoff grades optimization algorithm in two minerals case, Journal of Engineering Applied Science, 22, pp. 81–87. Mohammad, W.A. and Khan, M.N., 2004, Management of open ...
    ... maximum net present value (NPV). For this reason, the optimization of cut off grade is even today the subject of many researches in the mining science, with the aim of solving the practical problems in the exploitation of deposits. Long-term planning of exploitation at the open pit involves c ...
    ... 2011, Strategic mine planning under uncertainty, stochastic optimization for strategic mine planning: a decade of developments, Journal of Mining Science, Vol. 47, pp. 138-150. Dimitrakopoulos, R., 1998, Conditional simulation algorithms for modeling orebody uncertainty in open-pit optimization. ...

  • Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)

    Невенка Новаковић (2024)
    Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...
    керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрада

  • Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija

    Dragana D. Đurić (2019)
    U radu je prvi put opisan deo herpetofaune (Anura i Squamata) iz neogenih i kvartarnih lokaliteta Srbije. Obrađeni su lokaliteti Sibnica, Prebreza, Lazarevc, Vračević i Riđake, neogene starosti. Lokaliteti kvartarne starosti su pećine Mala i Velika Balanica, Pešturina, Hadži Prodanova, Baranica, Vrelska pećina i sedimentne ispune fisura u kamenolomima Venčac i Beočin. U radu je prikazana je taksonomska analiza herpetoloških ostataka. Pored taksonomske analize fosilnog materijala dat je kratak geografsko-geološki opis proučavanih lokaliteta, osnovne osteološke karakteristike anura i skvamata ...
    paleoherpetofauna, Anura, Squamata, kvartar, pleistocen, neogen, Srbija, paleoekologija, paleoklima
    ... in Belgrade: 63–117. Martin, J., Lopez, P. 1990. Amphibians and reptiles as prey of birds in southwestern Europe. Smithsonian Herpetological Information Service 82:1-43. Matejić B., Pavlović M. 1959. O nalasku „štajerske“ sisarske faune u selu Prebrezi kod Blaca. Zapisnici Srpskog geološkog društva ...
    ... ntal context of the Early Pleistocene hominins from Dmanisi (Georgia, Lesser Caucasus) inferred from the herpetofaunal assemblage. Quaternary Science Reviews, 105: 136–150 Blain, H.–A., Bailon, S., Cuenca–Bescós, G., Arsuaga, J.L., Bermúdez de Castro, J.M., Carbonell, E. 2009. Long–term climate ...
    ... European hominins inferred from the amphibian and squamate reptile assemblages: Sima del Elefante Lower Red Unit, Atapuerca, Spain. Quaternary Science. Revievs, 29: 3034–3044. Blackwell, B., Chu, S., Chaity, I., Huang, Y. E. W., Mihailović, D., Roksandic, M., Dimitrijević, V., Blickstein, J., Huang ...

  • Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije

    Dragana D. Petrović (2015-12-29)
    Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...
    Istočna vardarska zona; ofioliti; 2D i pseudo 3D geofizičko-geološkimodel; geodinamička evolucija
    ... 938-955. Boudier, F., and Nicolas, A., 1985. Harzburgite and lherzolite subtypes in ophiolitic and oceanic environments, Earth and Planetary Science Letters 76, 84-92, doi: 10.1016/0012-821X(85)90150-5. Božović, М., Prelević, D., Romer, R., Barth, M., Bogaard, P. V. D., Boev, B., 2013. The ...
    ... Dimitrijević, M. D. and Dimitrijević, M.N., 1987. The Paraflysch of the Central Vardar Subzone. The Turbiditic Basins of Serbia (Serbian Academy of Science and Arts), 79-100. Dimitrijević, M. D., 1997. Geology of Yugoslavia, Belgrade: Barex, Special Publications. Dimitrijević, M. D., 2001. Dinarides ...
    ... Speranza, F., Islami, I., and Hyseni, A., 1995. Paleomagnetic evidence for Cenozoic clockwise rotation of External Albanides, Earth and Planetary Science Letters, 129, 121-134 Koroneos A., Poli G., Cvetković V., Christofides G., Krstić D., Pécskay Z. 2011. Petrogenetic and tectonic inferences from ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... source in Serbia. Almost all lignite production (90%) from the Kolubara and Kostolac basins is used in thermal power plants (TPP), (EPS, 2018). Information on the content, distribution and mode of occurrence of major and trace elements, especially po­ tentially toxic and radioactive ones, are of great ...
    ... 112–126. doi: 10.1016/j.coal.2005.09.003 YUDOVICH, YA.E., KETRIS, M.P. & MERTS, A.V. (1985): Trace Elements in Fossil Coals.– Nauka, Leningrad [“Science” Pub. House], 239 p. (in Russian). ZHANG, Y., TIAN, J., FENG, S., YANG, F. & LU, X. (2018): The occurrence modes and geologic origins of arsenic ...

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... topography and water is sprinkled on the sand layers to increase cohesion within the sand and to allow for sectioning of the experiments to obtain information on the internal structures. We monitor surface deformation by taking top-view photographs (by using Panasonic Lumix DC-G9 with 20.3 megapixels ...
    ... study are deposited in the Yoda data repository system of Utrecht University with the DOI number https://doi.org/10.24416/UU01-8TX6RL. Further information is avail- able by contacting the corresponding author or the TecLab (teclab. geo@uu.nl). References Anderson, D.L., 1971. The san Andreas Fault ...
    ... 104386 Received 4 November 2020; Received in revised form 23 April 2021; Accepted 31 May 2021 mailto:n.krstekanic@uu.nl www.sciencedirect.com/science/journal/01918141 https://www.elsevier.com/locate/jsg https://doi.org/10.1016/j.jsg.2021.104386 https://doi.org/10.1016/j.jsg.2021.104386 Journal ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... online Appendix A together with a detailed descrip- tion of the analysed material and complete “ Ar/”Ar data. A brief overview of critical sample information is given in Table 1, while relevant “Ar/”Ar date spectra, K/Ca dia- grams, and isotope correlation plots are shown in Fig. 14. Additionally ...
    ... Yugoslavia. Geological Institute GEMINI, Belgrade Dimitrijević MN, Dimitrijević MD (1987) The turbiditic basins of Serbia. Serbian Academy of Science and Arts, Belgrade Dimitrijević MD, Drakulić N (1958) Kristalasti škriljci Jablan- ice. Zbornik radova RGF 6 Dimitrova E (1964) Petrologie des ...

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... (containing more information on the structural properties of the input text), but here we can explore the performance on the shorter texts [8]. The achieved results suggest that SBKE can be applied to shorter documents as well. Since SBKE is grounded in a structural and statistical information incor- porated ...
    ... approach, where a network (or graph) of words is used for the representation of texts, enables the exploration of the relationships and structural information incorporated in a text very efficiently. Although, there are variations, the usual way of representing documents as a graph models words as vertices ...
    ... method does not require linguistic knowledge (apart from stemming or lemmatization) as it is derived purely from the statistical and structural information of the network [10]. In this study, we use the SBKE method on a directed and weighted network. An individual network is constructed separately for ...

  • A bilingual digital library for academic and entrepreneurial knowledge management

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić (2015)
    A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...
    Knowledge management, Digital library, Multilingualism, Language Resources, Terminology
    ... Mining and Geology, University of Belgrade. She graduated at The Faculty of Philology, University of Belgrade, at Department of Library and Information Science, in 2011. In 2012, at the same Department, she completed her MA studies with thesis in audiovisual archiving. Currently she is PhD candidate ...
    ... and use as a continuum where data transforms into information, information transforms into knowledge and knowledge drives and underpins behaviour and decision-making (Abram,1997; p.20). To deal with the almost infinite amount of digital information, new methods such as data mining, text mining, ...
    ... be a part of recent developments in knowledge management systems. DL researchers have a need to transform information access into knowledge creation. Instead of serving as information providers, DL could become knowledge repositories by effectively categorizing, analyzing and organizing the contents ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • High-resolution sequence stratigraphy of carbonates - theory and examples

    Jelena Stefanović, Dejan Radivojević (2020)
    Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...
    изданак, системска група, јура-креда, карбонатна платформа, плитководна средина
    ... From the 70s and the development from the seismic stratigraphy - sequence stratigraphy has become powerful tool in modern scientific research. Science has encouraged the development of the method and biggest advances can be seen in resolution improvement and application of the original siliciclastic ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... magnificd methane emissions cffect, as a potent greenhouse gas of high global warming potential, which is closely associated to the gas flaring. This information can assist policymakers and industry stakeholders in understanding the impact of gas flaring and stress the importance of developing targeted ...
    ... god. XXV, br. 1 betwecen fucis, technologies, individual plants, etc. The use of country-specific cmission factors derived from #detailed information is cxpccted to reduce thc uncertaintics in the estimation of emission factors and result in a morce accuratc estimate of CO» emissions. The ...
    ... Tier 3 4pproach Tier 3 approach, as the most complex, requires a detailed GHG emissions model or measurements at facility level. Due to high information requirements and increased costs this approach is rarely chosen. Input data for inventorying emissions from stationary combustion processes are: ...

  • Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate

    Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)
    Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...
    Underplating, akrecija kore, Magnetske anomalije, Jadranska ploča

  • Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics

    Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić (2024)
    Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...
    Lecki vulkanski kompleks, andeyit, kalcedon, kvarc, opal-CT, mikrostruktura, organska materija