Претрага
2212 items
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The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass
Construction of E75 highway section through Grdelica gorge was one of the most demanding projects realized in recent Serbian history. The alignment approximately 25 km long consists of several tens of bridges, two tunnels, three galleries and cuts with total length of 6 km. The alignment passes through highly anisotropic Palaeozoic schist rock formation of different weathering grades. This study focuses on shear strength properties of discontinuities, which are found to be the critical feature contributing to the occurrence ...Dušan Berisavljević, Zoran Berisavljević, Svetlana Melentijević. "The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass" in Bulletin of engineering geology and the environment, Springer (2022). https://doi.org/10.1007/s10064-022-02580-8
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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... te · cCa2+(t) ⇒ cCa2+(t) = cCa2+(0) · exp ( −kprecipitate · t ) (5) Rate constants for the evaluation of ureolysis and reduction in calcium ions were presented using a nonlinear regression method using the Solver function in Microsoft Excel 2019. Microorganisms 2021, 9, 1691 6 of 20 2.5.2. D ...
... this study, 43 bacterial isolates were investigated through six experimental steps which involved a statistical approach to the selection, bacterial identification, and examination of metabolic activities and kinetic pathways relevant to targeted processes. Furthermore, the complete char- acterization of ...
... III15, and IV5) have been selected for the identification process. According to the gained results, the identification by VITEK2 Compact System was not precisely identified all isolates. In summary, the only one isolate II8 was identified as Brevibacillus chosinensis with a 91% probability. For the ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
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An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction
Dejan Ćebić, Nebojša Ralević, Marina Marčeta. "An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction" in Mathematical Communications (2020)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... occurrence: Theory, simulations and comparisons with the aftershock data, Journal of Physics: Conference Series, 319, 012004, 1-37. 16. Bhattacharya P., Chakrabarti, B.K., Kamal, A., Samanta, D. 2009. Fractal models of earthquake dynamics, Review of Nonlinear Dynamics and Complexity, Wiley-VCH, 2 ...
... Chaos and time-series analysis. Oxford University Press. Oxford, 507 p. 171.Stefański, K., Buszko, K., Piecyk, K. 2010. Transient chaos measurements using finite-time Lyapunov exponents, Chaos, 20, 033117-1-13. 172.Strogatz, S. 1994. Nonlinear dynamics and chaos with applications to physics, biology ...
... Journal of Nonlinear Science 1, 147-173 121.Mizoguchi, K., Fukuyama, E., Kitamura, K., Takahasi, M., Masuda, K., Omura, K. 2007. Depth dependent strength of the fault gouge at the Atotsugawa fault, central Japan: a possible mechanism for its creeping motion, Physics of the Earth and planetary ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... occurrence: Theory, simulations and comparisons with the aftershock data, Journal of Physics: Conference Series, 319, 012004, 1-37. 16. Bhattacharya P., Chakrabarti, B.K., Kamal, A., Samanta, D. 2009. Fractal models of earthquake dynamics, Review of Nonlinear Dynamics and Complexity, Wiley-VCH, 2 ...
... Chaos and time-series analysis. Oxford University Press. Oxford, 507 p. 171.Stefański, K., Buszko, K., Piecyk, K. 2010. Transient chaos measurements using finite-time Lyapunov exponents, Chaos, 20, 033117-1-13. 172.Strogatz, S. 1994. Nonlinear dynamics and chaos with applications to physics, biology ...
... Journal of Nonlinear Science 1, 147-173 121.Mizoguchi, K., Fukuyama, E., Kitamura, K., Takahasi, M., Masuda, K., Omura, K. 2007. Depth dependent strength of the fault gouge at the Atotsugawa fault, central Japan: a possible mechanism for its creeping motion, Physics of the Earth and planetary ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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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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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... (in Serbian). [5] Simonović V., (1995): Introduction to the Theory of Probability and Mathe- matical Statistics, TEKON - Tehnokon- salting, Belgrade, (in Serbian). [6] Vukadinović S., (1970): Elements of Probability and Mathematical Statis- tics, Technique for Copying of the Bureau of Construction ...
... (2005): Technique of Blasting and Eartquakes, Faculty of Mining and Geology, Belgrade, pp. 199. [3] Simeunović D,.(1985): Mathematics, Faculty of Mining and Geology – Mining Department, Belgrade pp. 102- 103. [4] Ivanović B., (1973): Theoretical Statistics, Naučna knjiga, Belgrade, pp. ...
... were performed. 3 DEFINING THE STATISTICAL CRITERIA To evaluate the degree of correlation between recorded (measured) and calcu- lated data in this paper, the coefficient of linear correlation r [5] was used between the logarithm of reduced distance R and the logarithm of the oscillation ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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An Efficient Class of Iterative Root-Finding Methods with Applications
Dejan Ćebić, Nebojša Ralević (2021)Dejan Ćebić, Nebojša Ralević. "An Efficient Class of Iterative Root-Finding Methods with Applications" in 2021 IEEE 19th International Symposium on Intelligent Systems and Informatics (SISY), IEEE (2021). https://doi.org/10.1109/SISY52375.2021.9582495
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Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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Effects of external noise on threshold-induced correlations in ferromagnetic systems
Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević. "Effects of external noise on threshold-induced correlations in ferromagnetic systems" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.062114
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Some models for determination of parameters of the soil oscillation law during blasting operations
... Elementsof Probability and Mathematical Statistics; Technique for Copying Bureau of Construction: Belgrade, Serbia, 1970; pp. 329–331. 11. Trajković, S.; Tokalić, R.; Lutovac, S. Study of Seismic Impacts on Adjacent Building due to Blasting Operations at Kovilovača Open Pit; Faculty of Mining and Geology: ...
... the data in Table 2, a statistical analysis was carried out and the following values were obtained: ‚ For model 1: The curved line dependency index ρ1 between the reduced distance R and soil oscillation velocity v is: ρ1 = 0.9880 (there is a strong correlation between R and v, given in Equation (28)) ...
... 0558 0.1781 ´0.0043 ´0.0040 ´0.1263 Based on the data in Table 5, a statistical analysis was carried out and the following values were obtained: ‚ For model 1 The curved line dependency index ρ1 between the reduced distance R and soil oscillation velocity v is: ρ1 = 0.9843 (there is a strong correlation ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... source of uncertainty, because of the transfer of both information and knowledge cou- pled with various uncertainty and imprecision (KOSKO 1993). This is the reason why fuzzy logic systems are distinguished, given that their essence is to handle knowledge that can be highly imprecise and expressed verbally ...
... ns of variables and their values produce linguistic statements (expressions), which constitute a bridge between numerical representation of informa- tion on a computer and human thinking. ZADEH (1975) introduced the “linguistic (fuzzy) variable”, which is the value of an uncertainty described by a ...
... availability under decision maker uncertainty. Environmental Earth Science, 71 (6): 2559–2572. VAN LAARHOVEN, P.J.M. & PEDRCYZ, W. 1983. A fuzzy extension of Saaty’s priority theory. Fuzzy Sets and Sy- stems, 11: 229–241. ZADEH, L.A. 1965. Fuzzy Sets, Information and Control, 8 (3): 338–353. ZADEH, ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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The Newton method for solving nonlinear equations based on aggregation operators
Nebojša M. Ralević, Dejan Ćebić (2019)Nebojša M. Ralević, Dejan Ćebić. "The Newton method for solving nonlinear equations based on aggregation operators" in XLVI International Symposium on Operational Research SYM-OP-IS, Kladovo, 15-18.9.2019, Универзитет у Београду (2019)
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... 2016, 9, 617. [CrossRef] 14. Petrović, Ž. Business Statistics, Megatrend; University of Applied Sciences: Belgrade, Serbia; Faculty for Management: Zaječar, Serbia, 2004; p. 182. 15. Vukadinović, S. Elements of Probability and Mathematical Statistics; Technique for Copying Bureau of Construction: Belgrade ...
... the data in Table 3, a statistical analysis was carried out and the following values were obtained: • for model 1: The curved line dependency index ρ1 between the reduced distance R and rock mass oscillation velocity v is: ρ1 = 0.9730 (there is a strong correlation between R and v, given in the Equation ...
... data in Table 3, a statistical analysis was carried were obtained: e for model 1: out and the following values The curved line dependency index p; between the reduced distance R and rock mass oscillation velocity v is: 01 = 0.9730 (there is a strong correlation between R and v, given in the Equation ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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An aproach to Implementation of blended learning in a university setting
... Zdravkova, K., E-learning 2.0 and its implementation, INFOtheca, Journal of informatics and librarianship, Vol. XI, No.2, pp.3-19, 2010. [4] Teresa Martin-Blas, E-learning Platforms in Physics Education, in: Technology Education and Development, Aleksandar Lazinica and Carlos Calafate (eds.), ...
... student accessed specific content, individual grades of students and grades at the course level. Picture 7 shows the weekly statistics of access for the course Informatics I grouped by different course content: Lessons, Resources and Assignments. Figure 7: Weekly access to various course content ...
... http://www.esri.com/� http://edn.esri.com/� There is also a rather developed dictionary of statistical terms, organized in a somewhat different manner, containing both the Serbian and the English equivalent within the same entry, which proved to be more practical, although the nor ...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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Keyword Extraction from Parallel Abstracts of Scientific Publications
... that combine the linguistic and statistical information (C-Value, T-Score, LLR, and Keyness). In previous research, all the texts were joined and the entire collection was treated as a single text, while for the research presented in this paper, the text process- ing and analysis is performed per each ...
... average 110). The statistics of the used English and Serbian parallel abstract are presented in Table 1. All the documents are supplied with metadata and keywords, annotated by human experts – the authors of the articles. The number of annotated keywords ranges from 3 to 18 in the Serbian and from 3 to 15 ...
... include calculation of C-Value, T-Score, LLR, and Keyness, it follows the procedure described in Subsect. 2.1. Table 1 presents the descriptive statistics for 50 parallel abstracts in the Ser- bian and English language including the average value, the minimal and maximal number of words in rows for each ...Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić . "Keyword Extraction from Parallel Abstracts of Scientific Publications" in Sematic Keyword-Based Search on Structured Data Sources - Third International KEYSTONE Conference, IKC 2017 Gdańsk, Poland, September 11–12, 2017 Revised Selected Papers and COST Action IC1302 Reports, Springer (2017)
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The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...... average value of the annual solar radiation energy in Germany, between 1981 and 2010, fluctuates from approximately 950 kWh/n? and 1,260 kWh/n? according to a specific location (ISE, 2019). According to the statistics, provided by the International Energy Agency (IEA), solar PV electricity generation ...
... of 42 kWh/m?, and in July it reaches a monthly value of 181 kWh/m?. Figure 14 shows the histograms with the insolation values for the analyzed months, with the basic statistics, according to which it is possible to get the mean value of the insolation for the studied area and period of time ...
... language". (No available internet link). 339 12% International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece Statistical Office of the Republic of Serbia, SORS, 2018. Municipalities and regions of the Republic of Serbia. (Available Internet link: http://publikacıje.stat ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
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Nonlinear stress-strain analysis of terrain using the finite element method
Ćorić Slobodan, Čaki Laslo, Rakić Dragoslav, Ćorić Slava. "Nonlinear stress-strain analysis of terrain using the finite element method" in Mining Enginerering - Rudarski radovi no. 4, Bor, Srbija:Mining and metallurgy institute Bor (2012): 311-320. https://doi.org/10.5937/rudrad1204301C
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A Data Driven Approach for Raw Material Terminology
Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci... dictionaries yielding 94,539 English terms and 48,096 Serbian terms. Some terms were found in both datasets: extracted from text and retrieved from dictionaries, namely, a total of 2285 English and 308 Serbian terms. The GIZA++ [43] and Moses toolkit [44] for statistical machine translation (SMT) were used ...
... pruning the phrase table with the threshold probability of 0.85, the remaining chunks were lemmatized and further filtered to select those in which both parts of the pair contain a candidate term from the raw material domain. More details about options and the procedure are available in [40]. The output ...
... example, 885 (7%) terms related to biology, chemistry, mathematics, informatics and physics. Among entries from the mining domain, those related to a specific subdiscipline of mining were identified by mining experts, and marked by a subdomain marker, as for example, entries related to mineral processing ...Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja. "A Data Driven Approach for Raw Material Terminology" in Applied Sciences, MDPI AG (2021). https://doi.org/10.3390/app11072892