Претрага
1397 items
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Evaluation And Perspectives Of Underground Coal Mines In Serbia
... such as Analytical Hierarchy Process (AHP), for the purpose of evaluating and ranking of the mines operated by PCUCE. Criteria for evaluation Initial step for evaluation of mines operated by PCUCE is to select criteria which will be used in AHP. For this purpose following criteria are selected: ...
... y ratio proposed by Saaty [7] is used. A consistency ratio is calculated for the pairwise comparison matrix. The upper limit proposed by Saaty for this ratio is 0.10. In a case where the consistency ratio calculated for the judgments is below 0.10, it is considered that the judgments exhibit a ...
... were [2], during which PCUCE was a part of JP EPS, and [3], study financed by European Agency for Reconstruction whose beneficiary was Ministry of Mining and Energy, RoS. These studies identified the need for investment in some of the mines to improve their technical performance and also limiting potential ...Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić. "Evaluation And Perspectives Of Underground Coal Mines In Serbia" in 7th Balkan Mining Congress Preceedings - BalkanMine2017, Prijedor, 11-13. oktobar 2017., Banjaluka : University of Banjalika, Faculty of Mining, RS, BiH (2017)
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Creation of a Training Dataset for Question-Answering Models in Serbian
Razvoj i primena veštačke inteligencije u jezičkim tehnologijama značajno su napredovali poslednjih godina, posebno u domenu zadatka odgovaranja na pitanja (Question Answering - QA). Dok su postojeći resursi za QA zadatke razvijeni za glavne svetske jezike, srpski jezik je relativno zanemaren u ovoj oblasti. Ovaj rad predstavlja inicijativu za kreiranje obimnog i raznovrsnog skupa podataka za obučavanje modela za odgovaranje na pitanja na srpskom jeziku, koji će doprineti unapređenju jezičkih tehnologija za srpski jezik. Pored brojnih istraživanja o jezičkim modelima ...veštačka inteligencija, obrada prirodnog jezika, jezički resursi, anotirani skupovi, ekstrakcija informacija, odgovaranje na pitanjaRanka Stanković, Jovana Rađenović, Maja Ristić, Dragan Stankov. "Creation of a Training Dataset for Question-Answering Models in Serbian" in South Slavic Languages in the Digital Environment JuDig Book of Abstracts, University of Belgrade - Faculty of Philology, Serbia, November 21-23, 2024, University of Belgrade - Faculty of Philology (2024)
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Conversion of land areas after coal mine closure and reclamation
Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.... and horticulture A7 Zone for industrial construction - wind generators A8 Zone for industrial construction — solar panels A9 Agricultural settlements and restitution for rural settlements +Al1I/A1-A5 A10 Surrendering to spontaneous succession and self-cultivation For each alternative, criteria ...
... mine land for solar energy projects is very attractive for the mine”s post-closure phase. Coal mining concession areas are generally larger than the mined area. Mining operations expand progressively during the operation lifecycle of the coal mine and portions of the site can be used for renewable ...
... important and present the concern in the sense of the loss of surface area and space for living. The study on the environment has a basic description of the effects that are expected, and it is a basic document that serves for the design of mining activities. During the operation of coal mine, a large void ...Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić. "Conversion of land areas after coal mine closure and reclamation" in 9th International conference mining and environmental protection MEP 23 Proceedings, Sokobanja, 24-27.05.2023., Belgrade : University of Belgrade - Faculty of mining and geology (2023)
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Using technology for knowledge transfer between academia and enterprises
Ivan Obradović, Ranka Stanković (2014)... international standards and initiatives such as ISO/IEC 19788 Metadata for learning resources depicted in Fig. 2. This standard is intended to provide compatibility with existing ISO Dublin Core (DC) Learning Object Metadata (LOM) standards and to support global requirements for adaptability both ...
... 19788 Metadata for learning resources Parts 1, 2, 3 and 5 of the ISO/IEC 19788 standard, marked in yellow are released as international standards, while the seven remaining parts, marked in light blue, are still under development.5 4 The language support system The need for multilinguality ...
... provide training for members of universities and enterprises for production of OER materials. The third objective is to produce materials in various languages, in video, audio and textual format, supported by electronic terminological resources, services, and functionalities for searching and browsing ...Ivan Obradović, Ranka Stanković. "Using technology for knowledge transfer between academia and enterprises" in Knowledge and Management Models for Sustainable Growth, Proc. of IFKAD 2014, 9th International Forum on Knowledge Asset Dynamics, 11-13 June 2013, Matera, Italy, Bari : IFKAD (2014)
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New Language Models for South Slavic Languages
Mihailo Škorić (2024)Izlaganje će predstaviti izazove i perspektive modelovanja južnoslovenskih jezika, sa posebnim osvrtom opšte jezičke modele građene na arhitekturi transformera (BERT, GPT), na dostupne skupove tekstova za obučavanje tih modela, te kvantitet i kvalitet tih skupova. Izlaganje će ponuditi pregled dostupnih skupova i modela, dok će posebna pažnja biti posvećena najnovijim korpusima tekstova. Prvi korpus, Kišobran, predstavlja krovni veb korpus južnoslovenskih jezika i ujedno trenutno najveći korpus tekstova na našim prostorima koji broji preko osamnaest milijardi reči i uključuje sve ...Mihailo Škorić. "New Language Models for South Slavic Languages" in South Slavic Languages in the Digital Environment JuDig Book of Abstracts, University of Belgrade - Faculty of Philology, Serbia, November 21-23, 2024, University of Belgrade - Faculty of Philology (2024)
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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Development of an integrated model for open-pit-mine discontinuous haulage system optimization
Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović . "Development of an integrated model for open-pit-mine discontinuous haulage system optimization" in Sustainability, MDPI (2024). https://doi.org/10.3390/su16083156
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A WordNet Ontology in Improving Searches of Digital Dialect Dictionary
In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...... databases, like Oracle used for storing the southern Dutch dialects [13] and Joseph Wright’s “English Dialect Dictionary” (EED) [8], MS SQLServer for storing a South Serbian dialect dictionary data [7], or it can be one of a machine- readable and interoperable Semantic Web standards, such as RDF, SKOS and ...
... digital resources for maintaining, enhancement, sharing, visu- alization and analysis of digital dialect dictionaries. This includes: the develop- ment of digital dictionaries of dialects [4], [13], [1], the development of tools for the management of dialectal dictionaries [10], the software for data visualization ...
... SKOS-XL which are used, for example, in the case of the dialect dictionary of the German language [15] and two Austrian dialectal dictionaries [2]. When it comes to search techniques over a dialect dictionary, the metadata are usually used to search for specific dialectal information. For example, the retrieval ...Miljana Mladenović, Ranka Stanković, Cvetana Krstev. "A WordNet Ontology in Improving Searches of Digital Dialect Dictionary" in New Trends in Databases and Information Systems: ADBIS 2017 Short Papers and Workshops - SW4CH (Semantic Web for Cultural Heritage) 767, Springer International Publishing (2017). https://doi.org/10.1007/978-3-319-67162-8_37
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... methods for calculations, the following ranking for the flotation tailing waste deposits was obtained, regarding their environmental impact: Žitkovac, Tvrd̄anski Do, Bostanište, Gornje Polje and Žarkov Potok. This result can contribute to the decision-making process of a prioritizing strategy for rehabilitation ...
... set of criteria for each individual criterion k(a). There are six types of the general criteria. In creation of the specific model for each type of general criterion, the parameters must be determined. In the next section, the presentations of each individual parameter are given. For the shorter text ...
... number of criteria, this method makes it harder to come to a conclusion for the analyzed problem [30]. For a more complete graphic presentation of the results obtained by the PROMETHEE method, the GAIA plan (Geometrical Analysis for Interactive Assistance) was used from the software Visual PROMETHEE 1 ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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Vebran Web Services for Corpus Query Expansion
Ranka Stanković, Miloš Utvić (2020)U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.... Online version currently includes 40,000 entries, but for the imple- mentation of our web service, the older version is used with 23,400 entries (11,300 in English and 12,100 in Serbian, 910 definition or annotation terms which belong to library standards, and 2,200 acronyms of international and national ...
... nb.rs 106 Infotheca Vol. 19, No. 2, December 2019 Scientific paper tronic resource of information for Library and Information Science profes- sionals, for scientists and students, as well as for library users with different interests. 4 Vebran Web Services Vebran Web Services enable users to search ...
... alphabets and character encod- ings (the aurora alphabet and ISO-8859-1 character encoding for SrpKor2013 corpus, Serbian Latin alphabet and UTF-8 character encoding for RudKor corpus), in order to enable query expansion for different corpora. There are several functions of Vebran Web Services which handle ...Ranka Stanković, Miloš Utvić. "Vebran Web Services for Corpus Query Expansion" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.5
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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 ...... 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 energy consumption for the last ten years are given in Figure 2. In 2017 total primary ...
... widely for each fuel among end-use sectors, depending on the technology implemented. For example: a gasoline car with a catalytic converter can emit 1.4 kt of NOX per Mtoe, while a diesel truck without filters can emit more than 50 kt of NOX per Mtoe 4. By applying appropriate emission factors for the ...
... pollution are: biomass (firewood) for carbon monoxide and NOx from the buildings sector and oil derivates for carbon monoxide and NOx from the transport sector. Reduction of emission can be achieved by implementation of measures aimed to avoid and reduce emissions. For the buildings sector energy reha ...Marija Živković. "Effects of Energy Production and Consumption on Air Pollution in Serbia" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities
Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević . "GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities" in Contributions to International Conferences on Engineering Surveying. Springer Proceedings in Earth and Environmental Sciences, Dubrovnik, Croatia, October 22-23, 2020, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-51953-7_21
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
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... strain, as ǫy is zero. For small strains this elongation along y may be small, and can thus be neglected. But it will become significant for large shears (shown in Section 2.5.4). For objects undergoing large deformation, the infinitesimal strain description can thus only be used for small cumulative rotations ...
... strain, as €, is zero. For small strains this elongation along y may be small, and can thus be neglected. But it will become significant for large shears (shown in Section 2.5.4). For objects undergoing large deformation, the infinitesimal strain description can thus only be used for small cumulative rotations ...
... negative, leading to strain type values of 1 for extension (>1 for extension in two directions), and –1 for shortening (<−1 for shortening in two directions). Thus, based on the relative magnitude and signs of the largest and smallest magnitude principal strains (|ǫmax| > |ǫmin|) we can discriminate ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Combining Heterogeneous Lexical Resources
... Balkanet project for wordnet development. For instance, it detects discrepancies between the hypernym/hyponym trees in two wordnets, synsets from a chosen subset of base concepts that have not yet been included in the wordnet under development, synsets which lack some information (for instance, glosses) ...
... the Balkanet project (Stamou, 2002) following the model adopted for the EuroWordnet project (Vitas, 2003). The current size of SWN is 6290 synsets with 10583 literal string-sense pairs. Since the core of wordnets developed for Balkan languages was produced by translation of the basic synsets ...
... All the WN developed in the scope of the Balkanet project use a common format for the exchange and linkage of data in XML. Although all BWNs use the same core XML schema, each wordnet can enhance this schema for some particular purposes (Figure 1). Although these two resources represent di ...Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić. "Combining Heterogeneous Lexical Resources" in Proceedings of the Fourth Interantional Conference on Language Resources and Evaluation, Lisabon, Portugal , May 2004, vol. 4, ELRA - European Language Resources Association (2004)
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement
Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić,. "Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement" in International scientific conference Challenges in Applied Geology and Geophysics: 100th Anniversary of Applied Geology at AGH University of Science and Technology, Book of abstracts, Kraków, Poland, 10-13. Sep. 2019, Kraków, Poland : AGH University of Science and Technology (2019)
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... p579—586. [68] Carpenter, M. et al.: Development of the First Internationally Accepted Standard for Geologic Storage of Carbon Dioxide utilizing Enhanced Oil Recovery (EOR) under the International Standards Organization (ISO) Technical Committee TC-265. Energy Procidea. 2014, Volume 63, Pages 6717-6729 ...
... become denser and sink, eliminating the potential for long-term leakage [60]. Onshore storage costs for saline formations in Europe for depths of 1000—3000 m is 1.9— 6.2 USS/t CO>, with a most likely value of 2.8 USS/t CO» stored. Estimated costs for offshore storage over the same depth range cover ...
... green plants absorb CO-» for photosynthesis and emit oxygen back into the atmosphere. CO» is used for many purposes such as preserving food and filling fire extinguishers. As a greenhouse gas, it traps heat from the sun. Normally, this keeps the climate warm enough for life to continue. Meanwhile ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić. "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, IOP Publishing (2019). https://doi.org/10.1088/1361-6528/ab3ca2
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FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain
U radu se daje kratak prikaz teorije semantike okvira, na kojoj je zasnovana leksička baza Frejmnet. Predstavljena je koncepcija ove mreže, kao i mogućnosti njene primene. Predstavljena je i leksička analiza koja se primenjuje u projektu izrade Frejmneta i ukazano na razlike između analize zasnovane na okviru u odnosu na analizu zasnovanu na reči. Zatim je prikazano nekoliko povezanih okvira koje prizivaju reči iz domena rizika. U radu je predstavljena i platforma NLTК pomoću koje se mogu koristiti ...... words and compares them, which allows for a clear overview of the differences in their use. This op- tion is particularly valuable for similar meaning words, for antonyms and 26 Infotheca Vol. 21, No. 1, September 2021 Scientific paper Figure 9. Concordances for ризик од in Sketch engine Figure 10 ...
... bg.ac.rs University of Belgrade Faculty for Mining and Geology Belgrade, Serbia Natalija Tomić ntomic@hotmail.com University of Belgrade Faculty for Mining and Geology Olivera Kitanović olivera.kitanovic@rgf.bg.ac.rs University of Belgrade Faculty for Mining and Geology Belgrade, Serbia 1 ...
... broader relation of Using, but it puts greater constraints on the frames bound by it (82). In order for this relation to be possible, there need to be at least two perspectives for viewing a neutral frame. For instance, the frame Risk_scenario is a neutral frame, while the frames Risky_situation, Being_at_risk ...Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović. "FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.1