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Упит dcterms_creator_txt:Лука Обрадовић

224 items

  • Prediction of roadheader performance in Serbian underground coal mines

    Duško Đukanović, Nemanja Đokić, Rade Tokalić, Luka Crnogorac, Kemal Gutić (2022)

  • Steel Arch Support Deformations Forecast Model Based on Grey–Stochastic Simulation and Autoregressive Process

    Luka Crnogorac, Suzana Lutovac, Rade Tokalić, Miloš Gligorić, Zoran Gligorić (2023)
    Relatively large deformations of the steel arch support in underground coal mines in the Republic of Serbia present one of the main problems for achieving the planned production of coal. Monitoring of the critical sections of the steel arch support in the underground roadways is necessary to gather quality data for the development of a forecasting model. With a new generation of 3D laser scanners that can be used in potentially explosive environments (ATEX), deformation monitoring is facilitated, while ...
    čelična podgrada, prognoza deformacija, vremenske serije, grey-stohastička simulacija, autoregresija, podzemni rudnik uglja

  • Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types

    Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac (2019)
    Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...
    линеарна регресија, метода најмањих квадрата, динамички модул еластиности, брзина уздужних таласа

  • Primena programa UVSZ pri zaštiti od miniranja

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić (2021)
    Primena energije eksploziva tj. miniranje, predstavlja osnovni način eksploatacije čvrstih mineralnih sirovina u rudarstvu. Miniranjem se postižu vrlo povoljni tehnoekonomski pokazatelji, koje nažalost prate i negativni efekti miniranja. U cilju zaštite životne sredine potrebno je za svaku radnu sredinu odrediti jednačinu oscilovanja stenske mase pri miniranju. Ova jednačina definiše promenu brzine oscilovanja stenske mase u zavisnosti od rastojanja, količine eksploziva, uslova izvođenja miniranja i geoloških karakteristika stenske
    Program UVSZ, miniranje, potres, zaštita životne sredine
    ... Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Primena programa UVSZ pri zaštiti od miniranja | Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić | XIII skup ...
    ... ZAŠTITI OD MINIRANJA APPLICATION OF UVSZ PROGRAM DURING PROTECTION OF BLASTING Suzana Lutovac1, Miloš Gligori 2, Jelena Majstorovi 3, Luka Crnogorac4, Rade Tokali 5 1 Univerzitet u Beogradu, Rudarsko-geološki fakultet, suzana.lutovac@rgf.bg.ac.rs 2 Univerzitet u Beogradu, Rudarsk ...

  • Wordnet Development Using a Multifunctional Tool

    Ivan Obradović, Ranka Stanković (2007)
    In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...
    Wordnet development, language resource integration, HLT tools
    ... 04:21:10 Wordnet Development Using a Multifunctional Tool Ivan Obradović, Ranka Stanković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Wordnet Development Using a Multifunctional Tool | Ivan Obradović, Ranka Stanković | Proceedings of the International Workshop ...
    ... as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Wordnet Development Using a Multifunctional Tool Ivan Obradović University of Belgrade Faculty of Mining and Geology Đušina 7, 11000 Belgrade, Serbia ivano@rgf.bg.ac.yu Ranka Stanković University of ...
    ... Proceedings of the Third International WordNet Conference - GWC 2006, Seogwipo, Jeju Island, Korea, pp. 325-328, 2006. [10] C. Krstev, I. Obradović, D. Vitas. Developing Balkan specific concepts within BalkaNet - a multilingual database of semantic networks, Proceedings of the Fifth International ...

  • 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 ...
    ... Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Terminology Acquisition and Description Using Lexical Resources and Local Grammars | Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić | Proceedings ...
    ... www.dr.rgf.bg.ac.rs Terminology acquisition and description using lexical resources and local grammars Cvetana Krstev Ranka Stanković Ivan Obradović Biljana Lazić University of University of University of University of Belgrade Belgrade Belgrade Belgrade cvetana @matf.bg.ac.rs ranka ...

  • Дигиталне библиотеке у рударству и геологији са посебним освртом на представљање сиве литературе

    Биљана Лазић, Александра Томашевић, Михаило Шкорић (2019)
    Имајући у виду потребу за проналажењем информација похрањених у различитим облицима документације која се генерише у областима рударства и геологије на Рударско-геолошком факултету Универзитета у Београду, отпочет је процес развоја дигиталне библиотеке ROmeka@RGF, на платформи за приказивање дигиталних колекција - Омека. Значајан део документације представља такозвана сива литература која је претежно заступљена у виду вишетомне документацијe. Први савладани изазов представљало је повезивање различитих вишетомних делова пројектних извештаја у једну целину која би била лако доступна и претражива.
    дигиталне библиотеке, сива литература, Омека, језички ресурси, речници
    ... Grey Literature in Library and Information Studies. Amsterdam: Walter de Gruyter, 2010. 1-9. Krstev, Cvetana, Ranka Stanković, Duško Vitas, Ivan Obradović. “The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines”. Sixth International Conference on Language ...
    ... Macarthur Foundation Grant Research Project“. Library Philosophy and Practice, 706 (2012) Веб. 10. 11. 2018. Stanković, Ranka, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić. “A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals”. Eighth International Conference ...
    ... Nicoletta Calzolari et al. (ur.). Istanbul : European Language Resources Association (ELRA), 2012. 1710-1717. Stanković, Ranka, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac. “Rule- based Automatic Multi-word Term Extraction and Lemmatization”. 10th International Conference on Language ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Indexing of textual databases based on lexical resources: A case study for Serbian | Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović | Semantic ...

  • Examination and characterization of nanostructured Co0.9Ho0.1MoO4

    Милена Росић, Маја Милошевић, Мариа Чебела, Владимир Додевски, Весна Лојпур, Марија Васић, Александра Зарубица (2023)
    ... Conference - ADVANCED CERAMICS AND APPLICATION XI Program and the Book of Abstracts Publisher: Serbian Ceramic Society Fditors: Dr. Nina Obradović Dr. Lidija Mančić Technical Editors: Dr. Adriane} Peleš Tadić Dr. Jelena Zivojinović Printing: Serbian Ceramic Society, Belgrade, 2023 ...
    ... in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023. ; [editors Nina Obradović, Lidija Mančić]. - Belgrade : Serbian Ceramic Society, 2023 (Belgrade 90 str. : ilustr. ; 30 cm Tiraž 120. ISBN 978-86-905714-0-6 a) KepaMuka ...

  • Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... Conference - ADVANCED CERAMICS AND APPLICATION XI Program and the Book of Abstracts Publisher: Serbian Ceramic Society Fditors: Dr. Nina Obradović Dr. Lidija Mančić Technical Editors: Dr. Adriane} Peleš Tadić Dr. Jelena Zivojinović Printing: Serbian Ceramic Society, Belgrade, 2023 ...
    ... in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023. ; [editors Nina Obradović, Lidija Mančić]. - Belgrade : Serbian Ceramic Society, 2023 (Belgrade 90 str. : ilustr. ; 30 cm Tiraž 120. ISBN 978-86-905714-0-6 a) KepaMuka ...

  • Carbonate filler resources of the Bjelopavlići area, Montenegro

    Božović Darko, Simić Vladimir, Radulović Dragan, Abramović Filip, Radusinović Slobodan (2016)

  • The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines

    Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan (2008)
    In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...
    LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval
    ... belim lukom AND beli lukovi AND belih lukova AND belima lukovima AND belim lukovima AND bele lukove AND bela luka AND beloga luka AND belog luka AND belome luku AND belom luku Due to the third inflectional transducer this query expands into only 12 combinations of an adjective form and a noun ...
    ... for the information on beli luk ‘garlic’. When searching with the two constituent keywords beli ‘white’ AND luk 219 ‘onion’ the search engine would typically return an irrelevant document based on the following content: Sastojci za 10 porcija: 3 glavice crnog luka, 1 šoljica ulja, 1/2 čaša ...
    ... keyword beli luk, three inflectional transducers are used: one for inflection of the adjective beli ‘white’, one for inflection of the noun luk ‘onion’ and one for the compound as whole which takes care of agreement conditions. These transducers expand the query beli luk into beli luk AND belim ...

  • Mineralogy and crystallochemical characteristics of HEU-type minerals from zeolitic tuff deposits of Serbia

    Kašić Vladan, Simić Vladimir, Životić Dragana, Radosavljević-Mihajlović Ana, Stojanović Jovica (2016)

  • Karakterizacija zeolitskog tufa iz ležišta „Igroš-Vidojevići“ sa geološkog i tehnološkog aspekta

    Kašić Vladan, Mihajlović Slavica, Životić Dragana, Simić Vladimir, Stojanović Jovica, Sekulić Živko, Kragović Milan (2018)

  • 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
    ... Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Automatic construction of a morphological dictionary of multi-word units | Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić ...

  • 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
    ... Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Resource-based WordNet Augmentation and Enrichment | Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev | P ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Obtaining of Ceramic Materials by the Method of the Thermal Transformation of Cation Exchanged Zeolites

    Radosavljević Mihajlović Ana, Stojanović Jovica, Došen Anja, Vulić Predrag (2012)

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • Comparison of raw clay from different localities for application in the production of traditional pottery in Serbia

    Maja Milošević, Alena Zdravković, Biljana Đorđević (2022)