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2176 items
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Dynamics of simple earthquake model with time delay and variation of friction strength
Kostić Srđan, Vasović Nebojša, Franović Igor, Todorović Kristina. "Dynamics of simple earthquake model with time delay and variation of friction strength" in Nonlinear Processes in Geophysics 20 no. 5, Minhen:European Geosciences Union (2013): 857-865
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076
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Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles
Jović Nataša, Prekajski Marija, Kremenović Aleksandar, Jancar Bostjan, Kahlenberg Volker, Antić Bratislav (2012)Jović Nataša, Prekajski Marija, Kremenović Aleksandar, Jancar Bostjan, Kahlenberg Volker, Antić Bratislav. "Influence of size/crystallinity effects on the cation ordering and magnetism of alpha-lithium ferrite nanoparticles" in Journal of Applied Physics 3 no. 111, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA:American Institute Physics (2012). https://doi.org/10.1063/1.3684554
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Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles
Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia (2012)Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia. "Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles" in Journal of Applied Physics 7 no. 111, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA:American Institute Physics (2012). https://doi.org/10.1063/1.3700228
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Defect detection in aluminium using pulse thermography for sample width periodic structure
Damnjanović Vesna, Goran Dikić, B. Milanović and Slobodan Petričević. "Defect detection in aluminium using pulse thermography for sample width periodic structure" in FOTONIKA 2017, VI International School and Conference on Photonics, Beograd, Srbija:Institute of Physics Belgrade (2017): 82
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Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... services such as Google Search and Google Translate, all rely on statistical approaches. e great advantage of statistics is that the machine learns quickly in a continuous series of training cycles, even though quality can vary randomly. e second approach to language technology, and to machine translation ...
... grammars laboriously coded into the soware by experts, or on a statistical language model. In this case, a model calculates the probability of a particular word occuring in a specific position (e. g., between the words that precede and follow it). For example, plaa laguna (blue lagoon) is a much more ...
... cial languages) and South Africa (11 official languages) have recently set up long-term national programmes for language research and technology development. e predominant actors in LT today rely on imprecise statistical approaches that do notmake use of deeper lin- guisticmethods and knowledge. For ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)
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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 ...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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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 ...... dioxide (CO) from the energy and industrial plants increased by about 1% or 321 Mt in 2022 to a new record value of 36.8 Gt [2]. This assessment is based on a detailed regional sectoral and energy analysis, including the most recent official national statistics publicly available data on energy ...
... consumption [6]. Figure 2 shows coal consumption in the US in the last half of previous century and first tvo decades of this century, with specific statistical results for most characteristic years. Coal consumption in US peaked in 2005, but the total annual coal consumption in tons peaked in 2007 ...
... y.ec.europa.eu/topics/oil-gas-and-coal/eu-coal-regions/coal-regions-transition_en [9] Elektroprivreda Srbije, Production capacities, 2023., available at: https://www.eps.rs/lat/Stranice/Kapaciteti-EIEn.aspx [10] OWID ED, Our World in Data based on BP Statistical Review of World Energy, 2022, ...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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Terminological and lexical resources used to provide open multilingual educational resources
Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...... engineering and statistics, as we go more in-depth, experts from more narrow fields are required. For example, NLP tools for language learning must connect to Second Language Acquisition (SLA) and Foreign Language and Teaching (FLTL) research with insights from Cognitive Psychology and Empirical ...
... No. 2, pp. 93–136, June. 1996. [12] P. Pantel and L. Dekang, “A statistical corpus-based term extractor,” in Advances in Artificial Intelligence, 1st ed., E. Stroulia and S. Matwin, Ed. Springer Berlin Heidelberg, 2001, pp. 36-46. [13] K. Heylen and D. De Hertog “Automatic Term Extraction,” in Handbook ...
... Picture 1 illustrates steps in terminology extraction. Crucial resources are morphological dictionaries and grammars. They are combined with some statistical measures for term extraction. The first step is analysis of terms in existing term base mentioned before (RudOnto, GeolISSTerm). It was recognized ...Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić. "Terminological and lexical resources used to provide open multilingual educational resources" in The Seventh International Conference on eLearning (eLearning-2016), 29-30 September 2016, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2016)
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Uncertainty of carbon dioxide emission factor for natural gas
Živković Marija, Ivezić Dejan, Danilović Dušan, Madžarević Aleksandar. "Uncertainty of carbon dioxide emission factor for natural gas" in 5th International Scientific Conference on «Energy and Climate Change» no. 5, Atina:University of Athens, KEPA (2012): 192-199
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Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj
Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)... Hierarchy Process (AHP) and Weight of Evidence (WoE). AHP is based on quantified expert judgement on the individual importance of conditioning factors, as geological, morphological and environmental proxies for landsliding. WoE is data-driven, i.e. it uses conditional probability of landslide occurrence ...
... 1980. [25] Varnes DJ. Landslide hazard zonation: a review of principles and practice, The UNESCO Press, Paris, 63 p., 1984. [26] Zhang G, Cai Y, Zheng Z, Zhen J, Liu Y, Huang K. Integration of the Statistical Index Method and the Analytic Hierarchy Process technique for the assessment of landslide ...
... Computers&Geosciences 52, pp.398-408, 2013. [15] Komac M. A landslide susceptibility model using the Analytical Hierarchy Process method and mul- tivariate statistics in perialpine Slovenia. Geomorp- hology 74, pp.17-28, 2006. [16] Kubat I, Mojsilović S, Veljković D, Reljić D, Strajin D, Begić F, Dimitrov ...Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić . "Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj" in Izgradnja, Beograd : Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista Izgradnja (2017): 239-246
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Size–strain line-broadening analysis of anatase/brookite (TiO<sub>2</sub>)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis
Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović (2022)A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results ...Materials Chemistry, Metals and Alloys, Atomic and Molecular Physics, Optics, Electronic, Optical and Magnetic MaterialsAleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović. "Size–strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2022). https://doi.org/10.1107/S2052520622001731
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On the Rankin-Selberg problem in short intervals
Ivić Aleksandar (2012)Ivić Aleksandar. "On the Rankin-Selberg problem in short intervals" in Moscow Journal of Combinatorics and Number Theory 3 no. 2, Moskva, Russia:Moscow Institute of Physics and Technology (2012): 3-17
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Cluster synchronization of spiking induced by noise and interaction delays in homogenous neuronal ensembles
Franović Igor, Todorović Kristina, Vasović Nebojša, Burić Nikola. "Cluster synchronization of spiking induced by noise and interaction delays in homogenous neuronal ensembles" in Chaos 22 no. 3, Koledž Park:American Institute of Physics (2012): 033147-1
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Stability, bifurcations, and dynamics of global variables of a system of bursting neurons
Franović Igor, Todorović Kristina, Vasović Nebojša, Burić Nikola. "Stability, bifurcations, and dynamics of global variables of a system of bursting neurons" in Chaos 21 no. 3, Koledž Park:American Institute of Physics (2011): 033109-1
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Tracking of the temporal dependency of fading of the human footprint temperature contrast
In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović. "Tracking of the temporal dependency of fading of the human footprint temperature contrast" in VIII International School and Conference on Photonics, Belgrade, Serbia, 23-27 August 2021, Institute of Physics Belgrade (2021)
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Basalt-polyester hybrid composite materials for demanding wear applications
Faisal Abusahmin, Ahmed Algellai, Nataša Tomić, Marija Vuksanović, Jelena Majstorović, Tatjana Volkov-Husović, Vladimir Simić, Radmila Jančić-Heinemann, Marinko Toljić, Jovan Kovačević (2020)Faisal Abusahmin, Ahmed Algellai, Nataša Tomić, Marija Vuksanović, Jelena Majstorović, Tatjana Volkov-Husović, Vladimir Simić, Radmila Jančić-Heinemann, Marinko Toljić, Jovan Kovačević. "Basalt-polyester hybrid composite materials for demanding wear applications" in Science of Sintering, National Library of Serbia (2020). https://doi.org/10.2298/SOS2001067A
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Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic
Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...... different processes dominated by uncertainty, multidimensionality, subjectivity, and indeterminacy, and can only be displayed expertly. In order to form the optimization model, it is necessary to reduce the indicated parameters to the same form in the analytical sense and to find a synthesis model. 3 ...
... within the reference values (Table 2), and a synthesis part, input parameters, reduced into one. It is evident that the model is rife with uncertainty, indeterminacy, multidimensionality, and relativity. The model must have an inference engine. The new mathematical and conceptual model of optimized selection ...
... within the reference values (Table 2), and a synthesis part, input parameters, reduced into one. It is evident that the model is rife with uncertainty, indeterminacy, multidimensionality, and relativity. The model must have an inference engine. The new mathematical and conceptual model of optimized selection ...Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković. "Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic" in Energies, MDPI AG (2020)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... crosscut in a horizontal plane between the VI horizon and the P2 SD adit of the "Blagodat". Underground Mining Engineering, n. 23, p. 33-44, 2013. WOLF, P. R., GHILANI, C. D. Adjustment computations - statistics and least squares in Surveying and GIS. New York: John Wiley & Sons, Inc., 1997. ...
... out of the last point E420-10 within the vertical plane, for the probability of 95% in this case, is . Setting out of the designed mine chambers within the vertical plane shall also be carried out by using total station and it is to be carried out at the same time as setting out within the ...
... are vastly spread both horizontally and vertically (approximately 300m in thickness) and discordantly lies over the older beds. They are consisted of sandy and grav- elly clays, clayly and ironaceus quartz sands and semi-consolidated sand- stones, laterally and vertically shifting on the bauxite ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)