Претрага

Упит dcterms_subject_txt:Gas Well

936 items

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... 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.rgf.bg.ac.rs Keyword Extraction from Parallel Abstracts of Scientific ...
    ... To the best of our knowledge, this will present a graph-based keyword extraction for parallel abstracts in scientific articles for the first time, as well as a new bilingual keyword extraction dataset. The main contributions of this paper are: (1) the development of bilingual (Serbian-English) keyword ...
    ... Geology. Apart from technical underground mining related topics, the journal publishes papers from other fields of mining, geology, and geosciences, as well as from other scientific and technical disciplines having a direct or indirect application in mining. During the period of 2004–2012, the journal published ...

  • Automatic construction of a morphological dictionary of multi-word units

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić (2010)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion
    ... 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.rgf.bg.ac.rs Automatic Construction of a Morphological Dictionary of Multi-Word ...
    ... a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation of the proposed procedure on sev- eral different sets of data. Finally, we discuss some implementation issues ...
    ... simple words to model these MWUs correctly [4]. When applied to a text in automatic text analysis these FSTs associate recognized MWUs with lemmas as well as with appropriate grammatical categories. Both the associated lem- mas and grammatical categories are in the same format as the one provided by d ...

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... Table 5, it becomes obvious that SrpCNNER does not perform so well on un- seen texts. In order to understand the reasons for that, we observed each and single case in isolation, which brought us to certain findings. SrpCNNER performed rather well in re- cognizing personal names (e.g. Ana, Nikola, Gavra ...
    ... 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.rgf.bg.ac.rs Proceedings of Recent Advances in Natural Language Processing ...
    ... in general were de- veloped mostly for newspaper and similar te- xts, there were some endeavours to produce functional systems for literary texts as well. Enrichment of French Renaissance texts with proper names (Maurel et al., 2014) faced two challenges: text diversity due to various spel- lings of words ...

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... there is a highly developed suffixial word formation. With verbs, prefixation is also well developed (mainly related to aspectual meanings). Composition, on the whole, is less developed. Calques and coinages, as well as so-called exocen- tric noun compounds, are frowned upon by language purists, as something ...
    ... of the former Serbo-Croatian language at univer- sities abroad, as well as in the names of university de- partments where this instruction was formerly held: for these languages, hence for the Serbian language (and lit- erature) as well, distinct curricula and diplomas now ex- ist, with various combinations ...
    ... as well as for experiments in alignment at the word level and in automatic transla- tion. The situation in various domains related to processing of Serbian differs, but there is definitely a considerable improvement in corpus development, morphological analysis, electronic dictionaries as well as NE ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... previously formed thrust wedge. The latter fault is short-lived, so its effect on the cumulative deformation is small, but it is well visible in the top-view photo as well as in the incremental strain in video S2. To the SW D o w n lo a d e d fro m h ttp s ://a c a d e m ic .o u p .c o m ...
    ... stretch tensor U as well as the left stretch tensor V (Hoger & Carlson 1984). As the polar decomposition holds: F = RU = VR (B1) Knowledge on U and U−1 leads to V and R (recall that RRT = I) by: R = FU−1 V = FRT (B2) Hoger & Carlson (1984) provide expressions for U in closed form as well as its inverse ...
    ... stretch tensor U as well as the left stretch tensor V (Hoger & Carlson 1984). As the polar decomposition holds: F=RU=VR (Bl) Knowledge on U and U~! leads to V and R (recall that RR’ = I) by: R=FU! V=FR’ (B2) Hoger & Carlson (1984) provide expressions for U in closed form as well as its inverse, without ...

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... 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.rgf.bg.ac.rs 17. Конгрес геолога Србије  17 th  Serbian Geological Congress  ...
    ... tical evaluation on locality level (Fisher 1953).  Overall‐mean paleomagnetic direction was calculated from the in situ locality mean directions as well as  from those after tilt corrections  in order to find out  if the magnetization  is of pre or post–folding age.  Magnetic mineralogy experiments  ...
    ... eded to prove this interpretation.   Based on  the  linear segments or selected steps of demagnetization we were able  to calculate  statistically well defined locality mean directions for 7 locality/sites out of 13. The samples from six loca‐ lites  /sites were unstable during demagnetization and  ...

  • Novi pristup proučavanju tekstura minerala značajnih za istraživanje rudnih ležišta

    Aleksandar Pačevski (2022)
    ... 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.rgf.bg.ac.rs Srpsko geološko društvo Zbornik apstrakata XVIII Kongpres ...
    ... nanometer grains of other minerals which were actually subsequently deposited filling the nano-pores in pyrite. In this way, copper-bearing pyrite is well defined and guidelines are provided for further deciphering the depositional conditions of this, otherwise rare variety of pyrite in nature. On the ...
    ... the specificity in the conditions of ore material deposition. Further examination of the Fe isotope composition of pyrite by LA-MC-ICP- MS, but on well-defined textural varieties such as colloform and cuhedral pyrite, it is found a significant difference in 6%'Fe values at the distance of only few ...

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... individually or jointly in a cooperative or other legal entity, should not have preferential treatment in the public procurement procedure. However, it is well known that transport costs have significant share in the price of biomass, and from that point of view, local biomass producers would be in a better ...
    ... model means association of Kostojevići’s citizens in energy cooperative. Energy cooperative could be an initiator, investor and project implementer, as well as biomass supplier and biomass plant operator. The scheme of functioning of this business model is shown in Figure 1. This concept is widely implemented ...
    ... favorable. Public private partnership model - ESCO model In the cases when the local self-government unit recognizes the environmental significance, as well as the economic and social potential of the biomass project in some of the local communities, but lacks sufficient financial, technical and human capacities ...

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... 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.rgf.bg.ac.rs 9 International Conference MINING AND ENVIRONMENTAL PROTECTION ...
    ... interval from 1 to 3, most frequently in the interval from 1 to 2. Taking into consideration the characteristic of the rock mass oscillation equation as well as the values of parameter m , which is mostly in the interval from 1 to 2, we can accept that it is 1 =1.5, which means that rock mass oscillation ...
    ... reduced distances for models 1 — 5. In table 3, the review of reduced distances R , registered rock mass oscillation velocities v, is given, as well as calculated rock mass oscillation velocities from v,, to v,s , for models 1 — 5. Table 3. Review of registered and calculated rock mass oscillation ...

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... 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.rgf.bg.ac.rs 9 International Conference MINING AND ENVIRONMENTAL PROTECTION ...
    ... data collected on exploring the "Valjevo" deposit. The emphasis was made on understanding the structural style and depth of the Miocene cover, as well as the spatial distribution of the estimated temperatures in the Triassic reservoir. Still, uncertainty remains about the hydraulic properties and ...
    ... correspond with the zone where the Neogene sediments cover is estimated to have the highest thickness (approximately 950 m). This temperature correlates well with the temperatures derived from the quartz geothermometers, which are in the range of 40-60 *C [8]. 5. CONCLUSION Geological data collected ...

  • Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis

    Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović (2019)
    ... moisture) occurs between 400 "С and 500 %C. Aliphatic апд aromatic fractions isolated from lignite extracts and hquid pyrolysis prođucts were analyzed by gas chromatography-mass spectrometry. Carbon isotope determinations (65С) of indiviđual compounds in these fractions were also performed. Compositions ...
    ... 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.rgf.bg.ac.rs MATURATION AND ISOTOPIC СНАМСбЕ5 ОЕ INDIVIDUAL HYDROCARBONS ...
    ... Životić!, К. Stojanović! 1University ог Belgrađe, Serbia, Montanuniversitat Leoben, Austria Маћицу changes ог biomarkers and аготанс hydrocarbons, as well as changes in their isotopic compositions were studied through diagenes1s and early catagenesis. Lignite samples (buminite reflectance, Rr = 0.30+0 ...

  • Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić, (2019)

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

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)

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

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

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... 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.rgf.bg.ac.rs IOP Conference Series: Earth and Environmental Science PAPER ...
    ... approach originally suggested by [2] and explore not only “zero” vs. current scanning sequence, but to explore differences between sequences as well. We also abandoned frequency analyses as impractical and focused on displacement analysis. We acknowledged the individuality of each rock face site ...
    ... 148/79°) were established, appointing to the block and wedge failure potential. Rock block size and volumes (0.5-2.7 m3) were reported in [9], as well as the first monitoring results and the first rockfall analyses, wherein several detachment zones were distinguished. Further on, these zones were ...

  • Combining Heterogeneous Lexical Resources

    Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić (2004)
    development of lexical resources, morphological dictionaries, WordNet
    ... 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.rgf.bg.ac.rs Combining Heterogeneous Lexical Resources Cvetana Krstev ...
    ... the most interesting examples. W e also present an integrated programming tool that enables the 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 ...
    ... Other relations are implemented more freely, depending on specific lexicalizations in Serbian. These relations include antonymy, meronymy, as well as some cross-part of speech relations (XPoS), such as CAUSES and BE_IN_STATE. For instance, synset [zatvoriti:1a] (synset [close:3, shut:1] in ...

  • NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands

    Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)
    Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...
    Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry

  • Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area

    Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić (2016)
    jurski sedimenti, uran, torijum, elementi retkih zemalja, podzemna voda, istočna Srbija