Претрага

Упит dcterms_subject_txt:data mining

1223 items

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Kristalne strukture Cs2HoSi4O10F i Cs2TmSi4O10F

    Predrag Dabić, Sabina Kovač, Aleksandar Kremenović (2021)
    ... 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 ...

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Хидротермалне промене у издвојеним стратиграфским јединицама у бушотини јужно од Бора

    Павле Јовичић (2024)
    Анализом уступљених узорака из истражне бушотине јужно од Бора, од стране компаније Serbia Zijin Mining, утврђене су хидротермалне промене (алтерације) које прате стратиграфске чланове набушене самом бушотином. Установљене алтерације директно осликавају класично развиће порфирског Cu система, при чему је указано на њихову повезаност са минерализацијом, као и на потенцијалност самог истражног простора којем изабрана бушотина припада.
    Бор, хидротермалне промене, порфир

  • Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”

    Vladimir Čebašek, Veljko Rupar (2018)
    Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".
    stabilnost kosina, povećanje nagiba kosina, metoda konačnih elemenata

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj ...
    ... mekušaca mogu se dobiti ı drugi značajni podaci korisni za rekonstrukciju paleosredina, kao npr. da li je neposredno okruženje bilo šumskog, stepskog ili otvorenog tipa (vlažne livade do stepe), da li su to vrste koje ukazuju na močvarnu, rečnu i Jezersku sredinu ili su u pitanju forme koje su ...
    ... shells from successive lineages can provide not only information on seasonal climate variations, but also data on global climate changes. Based on the remains of molluscs, other significant data useful for the reconstruction of palaecoenvironments can be obtained, such as whether the immediate e ...

  • Crystal structure of K3EuSi2O7

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu
    ... colorless single crystal was fixed on glass fiber using nail polish as glue and room-temperature X-ray diffraction data were collected. Relevant infor- mation on the crystal data, data collection and structure refinement are compiled in Table I. OnLin e Fir st CRYSTAL STRUCTURE OF K3EuSi2O7 3 ...
    ... presented in Table II. All figures of the crystal structures were prepared using the program VESTA.21 TABLE I. Experimental details. Crystal data Data collection Chemical formula K3EuSi2O7 Diffractometer Gemini S (Oxford Diffraction) Mr 437.44 Absorption correction Analytical + Empirical ...
    ... aBrown & Altermatt24; bBrese & O’Keeffe25 X-ray powder diffraction (XRPD) Collected XRPD data are shown in Fig. 4. A diffraction pattern calculated using the CIF file obtained from the single-crystal data of K3EuSi2O7 was overlaid. The experimental XRPD patterns are in good agreement with those ...

  • 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)
    ... 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 ...

  • Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije

    Branko M. Petrović (2016-07-12)
    Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...
    površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija
    ... laboratorijskih ispitivanja, može često biti nedovoljan da bi se mogla izvršiti korektna i racionalna interpretacija rezultata merenja. Iz tog razloga, sadržaj i obim laboratorijskih ispitivanja fizičko – mehaničkih svojstava materijala, dati su u Tabeli 5.2. Postoji više metoda ispitivanja stabilnosti ...
    ... bagera, treba dokazati da bageri sa dužom strelom imaju veću efektivnost, da mogu otkopati blok veće širine, dužine i visine, da imaju manji broj i interval pomeranja transportera, da mogu da ostvare manje nagibe bočnih kosina etaža koji su veoma bitni za njihovu stabilnost, da imaju veće sigurnosno ...
    ... izdvojiti nedostaci koji se ogledaju u činjenicama da manja dužina strele bagera povlači za sobom manju širinu, manju visinu i manji korak napredovanja bagera u bloku, da nije moguć nesmetani pristup dozera u cilju planiranja trase za nastup bagera, da se formiraju veći uglovi nagiba čeonih i bočnih ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... and grammat- ical category and for each ending of length 3,4,5,6, as an estimate of the probability that the FST class is the appropriate one. The da- taset includes: ending, POS, gender, animateness, pronunciation, FST and proba- bility (chance rank 0-100) for FST (table 1, column Rel. freq.). ...
    ... Intelligence 2015 (Granada, Spain) 88 References Ammar, C., Haddar, K., & Romary, L. (2015). Auto- matic Construction of a TMF Terminological Da- tabase Using a Transducer Cascade. Proc. of Recent Advances in Natural Language Processing. (pp. 17-23). Baldwin, T., & Kim, S. N. (2010). Multiword ...
    ... 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 ...

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... entries, as well as search them by lemma or data category markers. Lexical entries that match the specified search criteria appear as rows in the table. The registered user has access to multiple corpus searches (in the MatKorp and SrpKorpRGF corpora). The Mining Corpus (RudKorp) (Tomašević et al., 2018) ...
    ... more information on how the automatic mapping of DELA dictionary data into a database was conducted. During the transfer of data to the database some errors were discovered, that inevitably occur when working without automatic control of data entry. It happened that category labels were misspelled due to ...
    ... components. 3.3 Data categories The main classes for lexical notations, morphological, syntactic, and se- mantic categories are controlled by the internal thesaurus of the data cate- gories. Figure 2 shows a model of a lexicographic database that stores various categories of data, that is, grammatical ...

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... . Chemical analyses (470 samples of groundwater) were statistically processed to assess and interpret hydrochemi- cal data and to generate a prognostic hydrochemical map. The data were statistically processed and graphically inter- preted by water supply source and by populated area using statistical ...
    ... ingested inorganic arsenic in drinking water. Brit. J. Cancer, 66, 888, 1992. 4. BERG M., KIM TRANG P.T., STENGEL C., BUSCHMANN J., HUNG VIET P., VAN DAN N., GIGER W., STÜBEN D. Hydrological and sedimentary controls leading to arsenic contamination of groundwater in the Hanoi area, Vietnam: The impact ...
    ... 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 ...

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • 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
    ... available input data. Depending on the availability of data, thcir consistency, and time serics different tiecr approaches arc applied. A ticr represents a level of methodological complexity. Tier 1 Approach Ticr I represents the least complex approach, while requested input data are of the Ileast ...
    ... this company, three major emitters are identified: flow station, gas plant, and field offices. The synthetic data used is based on actual data from similar facilities in the industry. This data is used to model the cmissions generated by cach cntity in a rcalistic way, allowing us to access the total ...
    ... dow(n lžy facišity and Using the input data described in Section 3, the GHG emissions are calculated for the case of the upstrcam O&G company. Thce model is developed based on the most up-to-date cmission factors available, presented in Table 4. The input data consists of fuel consumptions, flare ...

  • Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja

    Branko Kostić, Dejan Prelević, Sabina Kovač, Ksenija Eraković, Dragana Životić (2022)
    Ugljevi niskog ranga – ligniti u Republici Srbiji predstavljaju glavnu energetsku sirovinu koja se koristi za proizvodnju električne energije. Rudarstvo u Srbiji doprinosi bruto dodatoj vrednosti sa 1,8% (2020; https://publikacije.stat.gov.rs/). Sagorevanjem ugljeva niskog ranga u termoelektranama generišu se velike količine elektrofilterskog pepela i pepela, koje često predstavljaju jedan od izvora zagađenja životne sredine usled sadržaja toksičnih elemenata. Dalja upotreba produkata sagorevanja zavisi od njihovog sastava i sadržaja toksičnih mikroelemenata. Svakodnevno sagorevanje lignita u termoelektranama uslovljava konstantan monitoring potencijalno toksičnih ...
    ugalj, produkti sagorevanja, XRF, ICP-MS

  • Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7

    Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković (2019)
    Part of E-80 highway that passes through Serbia (from the city of Nis to the administrative border Merdare) is 77 km long. The highway is divided into two sections: the first from Nis to Plocnik (39.4 km long) and the second from Plocnik to the administrative border with Kosovo. The route is designed through a typical plain and hilly terrain in which different geological units are dominant: crystalline schists, neogene sediments of foothills and quaternary sediments in the valley ...
    ... Dragoslav Rakic University of Belgrade – Faculty of Mining and Geology, Belgrade, Serbia Zoran Berisavljevic Corridors of Serbia, Belgrade, Serbia Irena Basaric, Snezana Bogdanovic, Jovana Jankovic University of Belgrade – Faculty of Mining and Geology, Belgrade, Serbia ABSTRACT: Part of ...
    ... 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 ...

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • Combining Heterogeneous Lexical Resources

    Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić (2004)
    development of lexical resources, morphological dictionaries, WordNet
    ... instrument in any form) enables, for instance, retrieving from a text of all the phrases of the type “to play on a musical instrument”. Da bi na gitari moglo da se svira solo dodata je josx jedna zxic muzike iz Vaca, koji na klaviru i fruli sviraju baroknu muziku, Mnogi gitaristi koji sviraju klasicynu ...
    ... professor, Faculty of Mathematics, Belgrade, vitas@matf.bg.ac.yu Ranka Stankoviæ , assistant, Faculty of Mining and Geology, Ðušina 7, Belgrade, ranka@rgf.bg.ac.yu Ivan Obradoviæ , professor, Faculty of Mining and Geology, Ðušina 7, Belgrade, ivano@rgf.bg.ac.yu Gordana Pavloviæ -Laž etiæ , professor, Faculty ...
    ... integration of these diverse lexical resources, as well as possible applications. We envisage the use of these resources in defining and linking lexical data in a way that will enable their more effective retrieval, integration, and reuse across various Web applications. 1 Introduction One of the ...

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... Zlatibor Mts. (Serbia), Abstract volume, p. 22, University of Belgrade, Faculty of Mining and Geology, Belgrade. BRAGIN, N., BRAGINA, L., GERZINA SPAJIĆ, N., DJERIĆ, N. & SCHMID, S. 2018. New radiolarian data from the Jurassic ophi- olitic mčlange of Avala Mountain (Serbia, Belgrade Re- gion) ...
    ... hadrecaena (DE WEVER), Praehexasaturnalis tenuispinosus (DONOFRIO & MosTLER), Žiphothecaellla longa (KozuR & Mock). According to the radiolarian data, the investigated cherts are oflatest Carnian to early Norian age. AncrpakT. TopboTpuHjackH {ropbH KapH – peT) cHBH KpeuMbauH Cca po- *KHaliHMa ...
    ... macrofossils are unknown here. SUDAR [1986, 1996) distinguished Ladinian, Carnian and Norian cherty limestones using conodont dating, but these data were rarely used in geological studies, and the Grivska For- mation was defined and mapped mostly on the base ofits macroscopic lithological ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... Hrouda, F., Jelı́nek, V. (2018). Anisoft 5.1—Advanced treatment of magnetic anisotropy data. Geophysical Research Abstracts 20, EGU-2018-15017. Chadima, M., & Jelı́nek, V. (2008). Anisoft 4.2.—Anisotropy data browser. Contributions to Geophysics and Geodesy, 38, 41. Collinson, D. W. (1983). Methods ...
    ... Mišića 39, Belgrade 11000, Serbia 2 Paleomagnetic Laboratory, Mining and Geological Survey of Hungary, Columbus utca 17-23, Budapest 1145, Hungary 3 Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djušina 7, Belgrade 11000 ...
    ... thesis, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, 108 pp. (in Serbian). Gajić, V. (2014). Sedimentology of Upper Cretaceous of the central part of the Vardar zone. Ph.D. dissertation, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, 265 pp. (in ...