Претрага
2204 items
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Integracija heterogenih tekstualnih resursa
Ranka Stanković, Ivan Obradović (2007)U radu je opisan pristup integraciji heterogenih tekstualnih resursa za srpski jezik uz pomoć jednog kompleksnog softverskog alata, razvijenog specijalno za ove potrebe. Opisani su struktura i osnovne komponente razvijenog sistema. Iznete su i mogućnosti unapređivanja resursa međusobnom razmenom informacija, koje pruža razvijeno integrisano okruženje. Konačno, opisana je i mogućnost primene integrisanih heterogenih resursa za proširenje upita, kao i pretraživanje tekstova uopšte, a naznačeni su i neki od pravaca daljeg razvoja.... Romanian Journal on Information Science and Technology. Bucureş of the Romanian academy. t al. 2003 – Vitas, D. et al. (2003): Processing Serbian Written Texts: An Overview of Resources an (Hg.): Proceedings of the International Workshop on Balkan Language Resources and Tools. Thessaloniki, November ...
... opens new possibilities for processing of texts, namely resource combining, in particular the combining of morphological information from the dictionaries and semantic information from the wordnet. Finally, we explain how integrated heterogeneous resources can be used for query expansion, as well as ...
... morphological dictionaries for Serbian, the Serbian wordnet and the multilingual ontology of proper names Prolex. We describe the possibilities WS4LR offers for enhancement of these resource through mutual interchange of information. We also describe its even more important feature which opens ...Ranka Stanković, Ivan Obradović. "Integracija heterogenih tekstualnih resursa" in Zbornik radova međunarodnog simpozijuma Razlike između bosanskog/bošnjačkog, hrvatskog i srpskog jezika, Graz, Austria, April 2007, - (2007)
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Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)... University of Belgrade; Belgrade, Serbia 6 Department of Earth Sciences, Dalhousie University; Halifax, Nova Scotia B3H 4R2, Canada 7Department of Geology and Geophysics, Woods Hole Oceanographic Institution; Woods Hole, MA, USA 8Laboratoire de Géologie, Ecole Normale Supérieure (CNRS UMR), PSL Research ...
... hybrid plumbing system witnessed in the geometry of the imaged on- and off-axis magma accumulations and persistent geochemical signal. Collectively, the novel observations suggest that magmatic systems operating beneath the EPR and subaerial volcanoes may not be quite so different. ...
... 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 Session: V009: Focused Observations of Ridge Near-Axis Remote and In Situ Investigations: Magmatic ...Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter. "Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N" in AGU Fall Meeting 2021, American Geophysical Union (2021)
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... construction with and without binders. // Proceedings of the 5th Int. conference Civil Engineering - Science and Practice / Žabljak, 2014, pp. 1133-1138. Authors’ addresses Miloš Šešlija, MSc, BSc, Civ. Eng., Teaching Assistant University of Novi Sad, Faculty of Technical Sciences, Department ...
... of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia Tel. +381 65 440 59 00 E-mail: radovicn@drenik.net Milinko Vasić, PhD, Geo. Eng., Full Professor University of Novi Sad, Faculty of Technical Sciences, Department ...
... Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia Tel. +381 64 236 95 05 E-mail: vaske@uns.ac.rs Mitar Đogo, PhD, Civ. Eng., Full Professor University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia
Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović . "Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia" in Groundwater: Occurrence and Significance for Human Health, CRC Press, Balkema - Taylor & Francis Group (2014)
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Using technology for knowledge transfer between academia and enterprises
Ivan Obradović, Ranka Stanković (2014)... challenge that needs new approaches and tools to be developed. Technology-enhanced learning (TEL) relies on information technology (IT) to offer support in improving the quality of learning and its outcomes. Designing effective TEL environments in an efficient and affordable way is a demanding task ...
... engagement in virtual classes and tracking individual student progress. Another component envisaged in our TEL platform, Adobe Connect for Webinars, offers templates for creation of landing pages, speaker information, registration pages, login pages and emails. These templates and content can be customized ...
... tić G., Vitas D., Obradović I. (2004). Using Textual and Lexical Resources in Developing Serbian Wordnet. Romanian Journal of Information Science and Technology, 7(1-2), 147-161. Krstev C., (2008). Processing of Serbian – Automata, Texts and Electronic dictionaries. Faculty of Philology, University ...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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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Synthesis and characterization of nanostructured Ca0.9Er0.1MnO3
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... a mikroskopija (SEM). Synthesis and characterization of nanostructured Ca„Er.,MnO, Tijana B. Vlašković-, Bojana Laban!, Maja Milošević?, Maria Čebelaš, Vladimir Dodevski*, Milena Rosić* _ University of Priština in Kosovska Mitrovica, Faculty of Sciences and Mathematics, Lole Ribara 29, 38220 ...
... During this combustion method, sucrose Ci.H»Ori which is both fuel and complexant and metal ions in the form of calcium nitrate tetrahydrate, manganese(II) nitrate hydrate, erbium(III) nitrate pentahydrate were used. Metal nitrates and sucrose were combined to prepare this nanostructured in their ...
... structural changes, and specific surface area were investigated. DTA, X-ray diffraction (XRD), FTIR, and Field emission scanning electron microscopy (SEM) were used to characterize the synthesized samples at room temperature. This work was funded by the Ministry of Education, Science and Technological ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Synthesis and characterization of nanostructured Ca0.9Er0.1MnO3" in Book of Abstracts Proceedings / 59th Meeting of the Serbian chemical society, Novi Sad, Serbia, June 1-2, 2023, Belgrade : Serbian Chemical Society (2023)
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Stratigraphical characteristics of Pleistocene fluvial deposits of southeastern Srem near Belgrade (Serbia)
Nenadić Draženko, Gaudenyi Tivadar, Tošović Radule, Bogićević Katarina. "Stratigraphical characteristics of Pleistocene fluvial deposits of southeastern Srem near Belgrade (Serbia)" in Comptes rendus de l'Académie bulgare des Sciences (Proceedings of the Bulgarian Academy of Sciences) 2 no. 68, Sofia:Bulgarian Academy of Sciences (2015): 225-231
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Fuzzy model of autogenous suspension coal cleaning
Benović Tomo, Miljanović Igor, Vujić Slobodan. "Fuzzy model of autogenous suspension coal cleaning" in Archives of Mining Sciences 57 no. 4, -:Polish Academy of Sciences - Committee of Mining (2012): 821-838. https://doi.org/10.2478/v10267-012-0055-9
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Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке
... site and the approximate position of the objects (walls, floors of houses, trenches) in a relatively short time. The archaeological site of Kremenite njive is located in the settlement Barajevo near Belgrade (Serbia). Applied magnetic investigations were supposed to provide information on t ...
... maly, most commonly graphic procedures are used: the half‐width rule and the tangents procedure, which, although significantly improved compared to the original graphic procedu‐ res (Eppelbaum, 2015), give about 25% information on the depth of the source of magnetic anomalies (Isles & Rankin, 2013) ...
... ssing and interpretation of results, which led to a new discipline, known as Archaeological Geophysics. The greatest advantage of Archaeological Geophysics is that it is non‐destructive, and with the increase in speed and measurement resolution, the costs of the investigation and excavat ...Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић. "Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке" in Књига апстраката 17. Конгрес геолога Србије, Врњачка Бања 17-20. мај, Српско геолошко друштво (2018)
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Application of rough set theory for choosing optimal location for flotation tailings dump
Štirbanović Zoran, Miljanović Igor, Marković Zoran. "Application of rough set theory for choosing optimal location for flotation tailings dump" in Archives of Mining Sciences 58 no. 3, -:Polish Academy of Sciences - Committee of Mining (2013): 893-900. https://doi.org/10.2478/amsc-2013-0062
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Results of the promethee method application in selecting the technologycal system at the Majdan III open pit mine
Vujić Slobodan, Hudej Marjan, Miljanović Igor. "Results of the promethee method application in selecting the technologycal system at the Majdan III open pit mine" in Archives of Mining Sciences 58 no. 4, -:Polish Academy of Sciences - Committee of Mining (2013): 1229-1240. https://doi.org/10.2478/amsc-2013-0084
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Assessment of risks associated with the operation of the tailings storage facility Veliki Krivelj, Bor (Serbia
Nišić Dragana, Knežević Dinko, Lilić Nikola. "Assessment of risks associated with the operation of the tailings storage facility Veliki Krivelj, Bor (Serbia" in Archives of Mining Sciences 63 no. 1, Krakow:Polish Academy of Sciences, Committee of Mining (2018): 147-163. https://doi.org/10.24425/118892
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Approach to operational mine planning: Case study Tamnava West
... Kolubara Coal Basin, such as: basic information about drill hole (collar data), complete lithology and assaying data, geotechnical, hydrogeological, geophysical data. This system can perform export of data to the different formats for use with mining and geological software's like Minex. ...
... International energy outlook 2011, US Energy Information administration 2 Ignjatović D., Knežević D., Kolonja B., Lilić N., Stanković R, 2007, Upravljanje kvalitetom uglja ("Coal quality management"), University of Belgrade, Faculty of mining and geology, Belgrade. 3 Carpenter M.A., 1995 ...
... many analysis of the technical and economic parameters and detailed planning of all possible scenarios of production. Due to availability of the coal resources and their price stability, coal is and will retain its important role in power generation in Europe and worldwide 1. In Serbia, coal ...Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković. "Approach to operational mine planning: Case study Tamnava West" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2014). https://doi.org/10.5937/tehnika1406952S
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The deterministic fuzzy linear approach in planning the production of mine system with several open pits
Vujić Slobodan, Miljanović Igor, Kuzmanović Marija, Zoran Bartulović, Gajić Grozdana, Lazić Predrag (2011)Vujić Slobodan, Miljanović Igor, Kuzmanović Marija, Zoran Bartulović, Gajić Grozdana, Lazić Predrag. "The deterministic fuzzy linear approach in planning the production of mine system with several open pits" in Archives of Mining Sciences 56 no. 3, -:Polish Academy of Sciences - Committee of Mining (2011): 489-497. https://doi.org/-
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Mine ventilation system planning using genetic algorithms
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 methodsNikola Lilić, Ranka Stanković, Ivan Obradović. "Mine ventilation system planning using genetic algorithms" in 6. international symposium on mine planning and equipment selection, Ostrava (Czech Republic), 3-6 Sep 1997, A.A. Balkema, Rotterdam (Netherlands) (1997)
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Accuracy assessment of geometrical elements for setting-out in horizontal plane of conveying chambers at the bauxite mine „Kosturi“ Srebrenica
Milutinović Aleksandar, Ganić Aleksandar, Tokalić Rade. "Accuracy assessment of geometrical elements for setting-out in horizontal plane of conveying chambers at the bauxite mine „Kosturi“ Srebrenica" in Archives of Mining Sciences 59 no. 1, Berlin, Germany: The Journal of Committee of Mining of Polish Academy of Sciences De Gruyter (2014): 93-106. https://doi.org/DOI 10.2478/amsc-2014-0007
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Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation
Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović. "Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation" in Thermal Science, National Library of Serbia (2023). https://doi.org/10.2298/TSCI220813168I