Претрага

Упит dcterms_subject_txt:data mining

1223 items

  • Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... ed19457335/GlobalEnergyReview2021.pdf https://doi.org/10.5937/PodRad1832061T https://scindeks-clanci.ceon.rs/data/pdf/0354-2904/2018/0354-29041832061T.pdf https://scindeks-clanci.ceon.rs/data/pdf/0354-2904/2018/0354-29041832061T.pdf https://doi.org/10.1016/j.rser.2014.07.093 https://www.sciencedirect ...
    ... -report/ https://www.ipcc.ch/site/assets/uploads/2018/03/srccs_wholereport-1.pdf https://www.iea.org/data-and-statistics/charts/global-energy-related-co2-emissions-by-sector https://www.iea.org/data-and-statistics/charts/global-energy-related-co2-emissions-by-sector https://www.intechopen.com/chapters/26045 ...
    ... 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.rs 249 8th International Conference MINING AND ENVIRONMENTAL PROTECTION 22 – ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... are very useful for investigation, exploitation and manage- ment of geothermal resources. Their correct interpretation based on exploratory drilling data may give accurate estimates of fluid temperature in a geothermal reservoir. They are also useful in monitoring, because variation of a geothermometer ...
    ... mpoweruk.com/geothermal_energy.htm [17] Erkan, K., et al., Understanding the Chena Hot Springs, Alaska, Geothermal System Using Temperature and Pressure Data from Exploration Boreholes, Geothermics, 37 (2008), 6, pp. 565-585 [18] Martinovi}, M., et al., Possibility of Electricity Production from Hydrogeothermal ...
    ... у 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 ...

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... the natural language used by man and the numerical data used by a computer. In recent years there has been a rapid increase in the number and types of applications of systems based on the fuzzy theory. While it was originally used to analy- ze data that allow for partial set membership, to avoid the ...
    ... fuzzy бројевима и анализом различи- тих фактора као што су време које је потребно да се ниво подземних вода спусти на проектовани ниво, затим карактеристике система одбране од подзем- них вода и фактор сигурности, дате су различите оцене које утичу на избор оптималне алтернативе. Према прорачунима ове ...
    ... вода црпне станице „Бездан 1”, тзв. „Алтернатива 2” која укључује у систем одбране 12 бунара појединачних капа- цитета од 40 l/s, где је потребно 7 дана да се обори ниво подземних вода. DRAGOLJUB BAJIĆ & DUŠAN POLOMČIĆ110 ...

  • 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

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... of lig- nite mining lakes in Central Germany using airborne hyperspectral casi-scanner data. Int. J. Coal Geol. 86, 40–53. https://doi.org/10.1016/j.coal.2011.01.007. Hammer, Ø., Harper, D.A.T., Ryan, P.D., 2001. Past: paleontological statistics software package for education and data analysis. Palaeontol ...
    ... tegrative toolkit developed for interactive analyses of big biological data. Mol. Plant 13, 1194–1202. https://doi.org/10.1016/j.molp.2020.06.009. Ciuk, E., 1991. Historical outline of brown coal exploration, examination and mining in Poland and the role of the State Geological Institute. Geol. Q. 35 ...
    ... R., 2020. Global methane emissions from coal mining to continue growing evenwith declining coal production. J. Clean. Prod. 256, 120489. https://doi.org/10.1016/j.jclepro.2020. 120489. Knoema, 2020. Production of lignite coal [WWW Document]. World data atlas. URL. https://knoema.com/atlas/topics/E ...

  • Methods of transportation and discharge of tails to flotation tailings pond

    Sandra Milutinović, Milena Kostović, Ljubiša Obradović, Srđana Magdalinović, Sanja Petrović (2023)
    There are different ways of transporting tailings to flotation tailings, this paper presents all of them that are in use in Europe. For conventional storage, tailings are generally discharged from outfalls located along the embankments (dams) of the facility. For surface thickened disposal and paste storage, the tailings are generally discharged from a central location - either through risers or from point sources that are raised during the life of the plant. There is also dry stacking of tailings, ...
    Tailings, transportation,discharge, methods

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... Hydrogeology, Faculty od Mining and Geology, University of Belgrade. His special field of research interest are karst groundwater resources of Fastern Herzegovina and Serbia. He also works in the field of management of groundwater resources, GIS analyses of hydrogeological data, karst water quality ...
    ... Departmanu · za hidrogeologiju Rudarsko-geološkog fakulteta. Dakle pred vama je jedan pokušaj “navijača” da ostane objektivan, čemu donekle u prilog ide činjenica da već duže od godinu dana nakon penzionisanja nije na njegovom čelu i nije neposredno uključen u svakodnevne nastavne i istraživačke ...
    ... workshop-a 2013. godine Participants of workshop 2013 Ova uspešno realizovana “generalna proba” dala je novi podstrek ideji da se uspostavi stalni međunarodni kurs na engleskom Jeziku, čija okosnica treba da bude kurs MS studija na RGF. U pripremi i razradi ove ideje učestvovali su pored autora priloga ...

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... poorly controlled combustion processes. 2.ENERGY CONSUMPTION AND PRODUCTION IN SERBIA Data on energy consumption: by fuel and by activity are the bases for determination of pollutants emissions. For the case of Serbia data can be found in energy balances of the country 7. The trend and the structure of primary ...
    ... controlled and regulated. The rest is taking place in internal combustion engines or stoves and furnaces. 3. ENERGY RELATED EMISSIONS Based on the data presented in 8 and default values for carbon dioxide emission factors 9 annual energy related carbon dioxide emission in Serbia is determined. In 2017 ...
    ... 46 2.98 Bulgaria 2.55 0.32 5.68 2.23 Croatia 2.03 0.14 3.80 1.87 Germany 3.77 0.09 8.88 2.36 Poland 2.58 0.10 7.63 2.95 Data about carbon dioxide emission can be analyzed and discussed when they are transformed to indicators and considered in wider context (Table 1) 10. Among ...

  • Eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje

    Marko Lazić, Filip Miletić, Milena Lekić, Veljko Rupar, Željko Petrović, Lazar Žujović (2021)
    U radu su analizirani eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje. Period analize je prvih šest meseci tekuće godine. Analiza je vršena sa aspekta ostvarene proizvodnje, kvaliteta uglja, efektivnog vremena rada, kapacitetnog i vremenskog iskoršćenja i zastoja sistema. Za poređenje podataka različitih parametara koji po svojoj prirodi nisu međusobno uporedivi, u radu su korišćene metode višekriterijumskog odlučivanja.
    proizvodnja uglja, zastoji, metode višekriterijumskog odlučivanja
    ... uglja prema otkopanoj količini proslojaka peska i gline. Slika 2.1 Odnos ostvarene proizvodnje uglja i međuslojne jalovine Na osnovu datog prikaza može se uočiti da je III BTD sistem otkopao veću količinu međuslojne jalovine nego uglja. Rad ovog sistema podrazumevao je otkopavanje većih količina jalovine ...
    ... odluke. Metoda se zasniva na pretpostavci da je kompromis prihvatljiv za rešavanje konflikta, da donosilac odluke želi rešenje koje je najbliže idealnom i da su alternative vrednovane prema svim postavljenim kriterijumima. Razvijena je na takvim osnovama da se donosiocu odluke predlažu alternative koje ...
    ... prema merama Rj, Sj i Qj. 3.2 TOPSIS metoda Metoda TOPSIS je zasnovana na konceptu da izabrana alternativa treba da ima najkraće rastojanje od idealnog rešenja, kao i najduže rastojanje od anti–idealnog rešenja. To znači da je pozitivno „idealno” rešenje sačinjeno od svih najboljih vrednosti koje se mogu ...

  • 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
    ... научни рад 1 University of Belgrade – Faculty of Mining and Geology, Department of Paleontology, Kamenička 6, 11000 Belgrade, Serbia. E-mails: zorica.lazarevic@rgf.bg.ac.rs; jelena.milivojevic@rgf.bg.ac.rs 2 University of Belgrade – Faculty of Mining and Geology, Department of Geophysics, Đušina 7, ...
    ... 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 ...

  • Uniaxial compressive strength test before and after standard fire test on rock mass

    Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)
    ... у 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 ...
    ... Radovan Gospavića , Snežana Ilićc , Aleksandar Kijanovićc a Faculty of Civil Engineering, University of Belgrade, Serbia b Faculty of Mining and Geology, University of Belgrade, Serbia c Institute for testing materials IMS, Belgrade, Serbia d Unogradnja V.V. Belgrade, Serbia ...
    ... as they were in standard fire test. REFERENCES Hoek, E. and Brown, E.T., 1980. Underground excavations in rock. The Institution of Mining and Metallurgy, London. Wittke, W., 2014, Rock Mechanics Based on an Anisotropic Jointed Rock Model (AJRM) SRPS EN 1926:2007, Natural stone test ...

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • Synthesis, characterization and photocatalytic examination of Co0.9Ho0.1MoO4 nanopowders

    Milena Rosić, Maja Milošević, Maria Čebela, Vladimir Dodevski, Vesna Lojpur, Radomir Ljupković, Aleksandra Zarubica (2023)
    ... у 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 ...
    ... University of Belgrade, P.O. Box 2522, 11001 Belgrade, Serbia 2 Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia *Department of 4tomic Physics, Pinča Istitute of Nuclear Sciences, National ...

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... 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 Resource based WordNet augmentation and enrichment Ranka Stanković and Ivan Obradović Faculty of Mining and Geology ...
    ... xls format, with 6,939 term entries, and 6,971 aligned pairs of terms. Microsoft language portal10 has published Microsoft Terminology Collection data in the form of a .tbx (ISO 30042:2008) file containing: Concept ID, Definition, Source term, Source language identifier, Target term, Target language ...
    ... letter, e.g. ML next to the term pair update - ažurirati means that this pair was found in the list obtained from Microsoft Terminology Collection data (M) and the parallel list (L). If the expert wants to add a new literal, he/she must insert a row, and copy the appropriate ID in the first column ...

  • Анализа утицаја искоришћења у преради на резултате оптимизације површинских копова

    Стефан Митић (2024)
    Одређивање оптималних граница површинског копа је сложен и итеративни процес који захтева мултидисциплинарну експертизу, софистициране технике анализе и пажљиво разматрање геолошких, рударских, економских,техничких, еколошких и друштвених фактора. Оптимизација подразумева генерисање серије шкољки, површинског копа на основу различитих фактора прихода (Revenue factor) са итеративним кораком промене цене метала у односу на базну цену. Свака генерисана шкољка представља инкрементално повећање запремине резерви према инкременталном повећању продајне цене метала. Велики број техно -економских фактора утиче на овај процес, и промена сваког од њих ...
    оптимизација површинског копа, анализа границе копа, оптимална контура копа, лежиште Бувач, профит, искоришћење у преради, трошкови прераде руде
    ... Selection. 4. Coombes J, 2004. Resource Estimation. :Snowden Mining Industry Consultants. 5. Dagdelen K., 2001. Open Pit Optimisation - Strategies for Improving Economics of Mining Projects through Mine Planning, International Mining Congress and Exhibition of Turkey 6. David M., 1977. Geos ...
    ... whittle 4X. Int. J. Mining and Mineral Engineering, 7(4). 9. Hall G., 2004. Multi-mine Better Than Multiple Mines. Perth, Orebody Modelling and Strategic Mine Planning Symposium. 10. Hartman, H. L., 1992. SME Mining Engineering Handbook. Littleton, Colorado: Society for Mining, Metallurgy, and ...
    ... Society for Mining, Metallugy & Exploration (SME). 14.Joukoff T. ; Purdey D. ; Wharton C., 2004 . Development and Application of Whittle Multi-Mine at Geita Gold. Perth, Proceedings of the Orebody Modelling and Strategic Mine Planning Conference. 15. Kennedy B. A., 1990. Sur/face Mining. Littleton ...

  • Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji

    Ljiljana R. Kolonja (2016-09-23)
    Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...
    rudarstvo, bezbednost i zdravlje na radu, poslovna inteligencija,tehnička zaštita, ontologije
    ... podaci smešteni u bazi postaju pristupačni za istraživanje (eng. data mining) pomoću alata za analizu, pri čemu je model podataka projektovan tako da krajnji korisnik može jednostavno da definiše upite, što znači da su nazivi i opisi polja semantički bogati, veze jednostavne, uz raznovrsne ...
    ... in chemical process industrie. Process Safety and Environmental Protection, 79, 65‐80. 126 KNIESNER, T. J. & LEETH, J. D. 2004. Data mining mining data: MSHA enforcement efforts, underground coal mine safety, and new health policy implications. Journal of Risk and Uncertainty, 29, 83‐111 ...
    ... odnosno na bazi toga šta se dešava kada nešto krene pogrešnim putem, pod datim okolnostima, iako korisno, u rudarstvu može da znači katastrofalne posledice. Zaposleni u rudarstvu, pre svih neposredni izvršioci – rudari, moraju da se oslanjaju na protokole, „post‐hok“ analize prethodnih incidenata ...

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... development, whose main goal is the integration of existing geologic archives, data from published maps on different scales, newly acquired field data, Intranet and Internet publishing of geologic information. The Faculty of Mining and Geology of Belgrade University realized the GeolISS project financed ...
    ... repository for digital archiving, query, retrieving, analysis and visualization of geological data. The development and implementation of the GeolISS is managed by a team from the Faculty of Mining and Geology of Belgrade University and financed by Ministry of the Environmental protection. The ...
    ... raster and the vector data model to represent reality. Raster data sets record a value for each point in the area of interest, which may require more storage space than the representation in vector format that stores only the Ranka Stanković 66 necessary data. Vector data can be displayed as vector ...

  • Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders

    Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)
    ... у 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 ...
    ... Faculty of Pharmacy, Department of Bromatology, Belgrade, Serbia “Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia We studied the influence of Ag doping on the crystal structure and magnetic ...

  • Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines

    Ugljesa Bugarić, Milos Tanasijević, Stevan Djenadić, Dragan Ignjatović, Ivan Janković (2022)
    This paper presents the model for the identification of reference points on the lifetime curve of engineering systems. This curve commonly represents the increase and decline of failure in relation to time. A direct correlation between failure rate and costs is assumed in this paper, therefore, statistical and empirical analysis of costs provided reference points. This approach is used for positioning stages of the engineering system’s lifetime with a minimal number of failures and costs, regardless of whether these ...
    Electrical and Electronic Engineering,Industrial and Manufacturing Engineering, Control and Optimization, Mechanical Engineering, Computer Science (miscellaneous), Control and Systems Engineering