Претрага
445 items
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфијаSaša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara
U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević. "Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara" in 10th International Conference Coal 2021, Jugoslovenski komitet za površinsku eksploataciju, Zlatibor (2021)
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...... bucket-wheel excavators are considered to have a lifetime equal to the lifetime of a steel structure. From the aspect of asset management, operational security, and risk management, such a statement should be further analyzed. The reduction in the effectiveness of the machine indicates that it is necessary ...
... The study of decision making tools for equipment selection in mining engineering operations. Gospodarka Surowcami Mineralnymi – Mineral Resource Management, 25, 37-56. 7. Djenadic, S., Jovancic, P., Ignjatovic, D., Miletic, F., & Jankovic, I. (2019). Analysis of the application of multi-criteria ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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From post-disaster landslides inventory to open landslides data
... the UNDP Office in Serbia, the project “Beyond landslide aWAREness” (BEWARE) was implemented with the aim to support landslide risk assessment and management in the affected territory. This paper is presented basic results and main project deliverables. Methodology Study area covered 11.840 km2, ...Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić. "From post-disaster landslides inventory to open landslides data" in Proceedings of 3rd European Regional Conference of IAEG/ Athens/ Greece/ 6-10 October 2021, International Association for Engineering Geology and the Environment (2021)
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A Description of Morphological Features of Serbian: a Revision using Feature System Declaration
In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...Cvetana Krstev, Ranka Stanković, Vitas Duško. "A Description of Morphological Features of Serbian: a Revision using Feature System Declaration" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta : European Language Resources Association (2010)
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Serbian Society of Geomorphologists
Dragana Đurić, Jelena Ćalić (2019)... within the Carpatho-Balkan Geomorphological Commission (CBGC) (2012-2015). Society in the period 2011 - 2015 Subsequent to the foundation, the Management Board was elected by the participants at the meeting, and consisted of: Jelena Ćalić (president), Tivadar Gaudenyi (vice- president), Igor Jemcov ...
... the period 2016 – 2019 The Assembly of the Serbian Society of Geomorphologists held in December 2015 approved the election of the new Board of management for the upcoming period: Dragana Đurić (president), Marko V. Milošević (vice president), Sanja Manojlović (secretary), Ana Mladenović (member) ...Dragana Đurić, Jelena Ćalić. "Serbian Society of Geomorphologists" in GeomorForum 2019: Landforms related to plains of Serbia and its neighboring area, Conference Programme and Abstracts, Beograd, 10-12. maj 2019, Serbian Society of Geomorphologists (2019)
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Evaluating the deep learning software tools for large-scale enterprises using a novel TODIFFA-MCDM framework
Zoran Gligorić, Ömer Faruk Görçün, Miloš Gligorić, Dragan Pamucar, Vladimir Simić, Hande Küçükönder (2024)duboko učenje, industrije velikih razmera, MAXC (maksimum kriterijuma), TODIFFA (totalni diferencijal alternative), izbor softvera za dubinsko učenjeZoran Gligorić, Ömer Faruk Görçün, Miloš Gligorić, Dragan Pamucar, Vladimir Simić, Hande Küçükönder. "Evaluating the deep learning software tools for large-scale enterprises using a novel TODIFFA-MCDM framework" in Journal of King Saud University - Computer and Information Sciences, Springer Science and Business Media LLC (2024). https://doi.org/10.1016/j.jksuci.2024.102079
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacijaSvetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Anticipated sulfur dioxide emissions from coal-fired power plants
Aleksandar Madžarevic, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2024)Southeastern Europe (SEE), which includes Serbia, along with Germany and Poland, is one of the largest producers of solid fuels in Europe. Despite growing environmental concerns, coal, especially lignite, persists and remains the dominant fuel for electricity generation in this region. Concurrently, these power plants emerge as the predominant emitters of pollutants in all the observed states. To conduct a comprehensive analysis, data on major emitters within the European Union were gathered, allowing for a detailed comparison with SEE ...Aleksandar Madžarevic, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac. "Anticipated sulfur dioxide emissions from coal-fired power plants" in Thermal Science, National Library of Serbia (2024). https://doi.org/10.2298/TSCI240308167M
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
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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. ...Biljana Lazić, Mihailo Škorić. "From DELA Based Dictionary to Leximirka Lexical Database" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.4
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Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181
Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić. "Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60196-6_14
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Semantic Textual Similarity of Courses Based on Text Embeddings
This paper explores the application of textual embeddings to measure semantic similarity between educational courses’ curriculums, aiming to enhance the effectiveness of the next faculty accreditation. Leveraging state-of-the-art natural language processing techniques, we employ pre-trained embeddings to capture the semantic meaning of course descriptions. Our methodology involves transforming course curriculum texts into high-dimensional vector representations, enabling efficient and meaningful comparisons. We evaluate the proposed approach on a diverse dataset of course descriptions, employing established benchmarks for semantic textual similarity ...... Automation and Orchestration of Hardware-in-the-Loop Testing Processes Vanja Mijatov, Bojana Ivanovic Mijatov, and Branko Milosavljevic Configuration Management in the Distributed Cloud ........... Tamara Ranković, Ivana Kovačević, Veljko Maksimović, Goran Sladić, and Miloš Simić Advanced Automated ...
... De Rijke, M.: Short text similarity with word embeddings. In: Proceedings of the 24th ACM International Conference on Information and Knowledge Management (CIKM 2015), pp. 1411—1420. Association for Computing Machinery, New York, NY, USA (2015) Anuyah, O., Azpiazu, L.M., Pera M.S.: Using structured ...
... University of Belgrade (2022). |[ [Peumm y HTHTaJHOM JOOy HH}popMaTHuka mojipmmKa 34 CpHCKH je3HK]| Tomašević, A.: Development of a model for management of mining project documentation. Doctoral dissertation. University of Belgrade - Faculty of Mining and Geology (2018). [ [Paspoj Mojema 30 - ...Olivera Kitanović, Aleksandra Tomašević, Mihailo Škorić, Ranka Stanković, Ljiljana Kolonja. "Semantic Textual Similarity of Courses Based on Text Embeddings" in Lecture Notes in Networks and Systems, Springer Nature Switzerland (2024). https://doi.org/10.1007/978-3-031-71419-1_27
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Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu
Četvrtu industrijsku revoluciju – Industriju 4.0 karakteriše upotreba cyber-fizičkih sistema. Da bi se postigla optimalna strategija održavanja (ali i eksploatacije), neophodno je razviti sisteme koji podržavaju napredne inteligentne sisteme održavanja ili tehnologije pametnog održavanja. Iz toga su proizašli postulati Prediktivnog održavanja 4.0 (PdM 4.0) koji definišu veoma blisku budućnost u oblasti održavanja tehničkih sistema pa i rudarske opreme. PdM 4.0 uključuje iskorišćenje snage veštačke inteligencije za stvaranje stalnog uvida u otkrivanje uzroka i anomalija u radu opreme, koje se ...... Wi-Fi Senzori temperature Senzori vibracija KONTROLER KONTROLER L A N L A N 100 Literatura [1] Jovančić, P. (2016), Asset management and condition monitoring on maintenance of mining equipment lignite mines, Conference Proceedings 13th International symposium Continuous Surface ...
... monitoring system for basic mining equipment at open pit mines of Electric Power Industry of Serbia, XXI International Congress on Maintenance and Asset Management- EUROMAINTENANCE 2012, 2012, Sava Centar, Belgrade, Serbia, Conference Proceedings, pp. 622-630, ISBN 978-86-89141-00-9, COBISS.SR-ID 190591244 ...Predrag Jovančić, Vesna Damnjanović, Dragan Ignjatović, Miloš Tanasijević, Stevan Đenadić. "Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu" in IX Međunarodna konferencija UGALJ 2019, Zlatibor, Srbija, 23-26. oktobar 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources
Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović. "Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources" in Trans. Computational Collective Intelligence - Lecture Notes in Computer Science 26, Springer (2017). https://doi.org/10.1007/978-3-319-59268-8_8
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A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach
Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependabilityNikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović. "A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach" in Applied Sciences, Basel, August 2024, MDPI (2024). https://doi.org/https://doi.org/10.3390/app14177947
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage
Maja Milošević, Biljana Đorđević, Alena Zdravković . "Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage" in 9th International Conference Mineralogy and Museums, Sofia, Bulgaria, Earth and Man National Museum and Bulgarian Mineralogical Society (2021)