Претрага
139 items
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... activities with an increasingly obvious pressure on the systematic reduction of the impact on the environment in the processes of production, transformation, and consumption of electricity. Total global energy-related greenhouse gas emissions rise by about 1% to a record high of 41.3 Gt CO»>eq ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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WS4LR - a Worksation for Lexical Resources
Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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Srbija u OneGeology Europe
Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić. "Srbija u OneGeology Europe" in Zapisnici Srpskog geološkog društva za 2013. godinu, Beograd : Srpsko geološko društvo (2014)
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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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Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia
Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)... 104252 16 is no significant thermal transformation of the OM, and therefore no substantial changes of the β-/γ-MTTC parameter are observed (Fig. 13b). The most prominent change of this parameter is recorded in the Čučale unit, where the higher thermal transformation of the OM is noticed (Table 10, Fig ...
... eral samples deposited in the Čučale unit, where the values are nearly at equilibrium (C31 22S/(22S + 22R) ~ 0.5), suggesting the higher thermal transformation of the OM (Table 9). Only the sample BL7/64 has expressed value higher than 0.5 (Grice et al., 1998; Peters et al., 2005), which is in accordance ...
... given in Table 7). N. Burazer, et al. Marine and Petroleum Geology 115 (2020) 104252 18 parameters are the same, suggesting that the thermal transformation of the OM should be considered when reconstructing paleoclimate con- ditions. 5.5. Depositional environment There is ample evidence that specific ...Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević. "Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia" in Marine and Petroleum Geology, Elsevier BV (2020). https://doi.org/10.1016/j.marpetgeo.2020.104252
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Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić. "Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)" in Annales Societatis Geologorum Poloniae (2021). https://doi.org/10.14241/asgp.2021.16
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A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals
This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić. "A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals" in Proceedings of the 8th International Conference on Language Resources and Evaluation, LREC 2012, May 2012, Istanbul, Turkey, Istanbul, Turkey : European Language Resources Association (2012)
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An aproach to Implementation of blended learning in a university setting
Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
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Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)
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Keyword-Based Search on Bilingual Digital Libraries
This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...... its correspond- ing TUV in Serbian in two different formats: XML and JSON. Original TMX format is in XML, but our system supports its automatic transformation into JSON without information loss. Biblǐsa’s digital library contains metadata in XML and JSON format (Fig- ure 2), with details about articles ...Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović. "Keyword-Based Search on Bilingual Digital Libraries" in Semantic Keyword-Based Search on Structured Data Sources - Second COST Action IC1302 International KEYSTONE Conference, IKC 2016, Springer (2017). https://doi.org/10.1007/978-3-319-53640-8_10
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Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta
Vesna Cvetkov (2020)Vesna Cvetkov. "Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: Zbornik radova, Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, Beograd, 28.02.2020. , Beograd : Srpsko arheološko društvo (2020)
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support
... comprised of a cutting-edge transducer, A/D converter, and _ USB-PC communication. The frequency signal was obtained applying a FFT (Fast Fourier Transformation) analysis. The software supports analysis of the time and frequency acceleration signal The results, that is, the vibrations in the time domain ...Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321
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Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations
Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović. "Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations" in International Scientific Conference - Sinteza 2024, Belgrade, 16. maj 2024, Singidunum University (2024). https://doi.org/10.15308/Sinteza-2024-288-294
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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
... the cluster analysis. Before conducting HCA, data normalisation was carried out as necessary. Selected parameters were subjected to Box-Cox transformation (Box and Cox 1964), and data for 11 variables were standardized by calculating their standard scores (z-scores). Standardization scales the ...Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4
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The Nooj System as Module within an Integrated Language Processing Environment
Ranka Stanković, Duško Vitas, Cvetana Krstev. "The Nooj System as Module within an Integrated Language Processing Environment" in Proceedings of the 2007 International Nooj Conference, Cambridge Scholars Publishing (2008)
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Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?
Стефан Петровић, Наталија Батоћанин (2020)У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...Стефан Петровић, Наталија Батоћанин. "Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?" in Записници српског геолошког друштва, Српско геолошко друштво, Београд (2020)
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content
Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugsNina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović. "Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content" in Journal of Sol-Gel Science and Technology, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s10971-019-04925-4