Претрага
717 items
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Density maps from gravity inversion as a tool for the basin basement analysis and imaging
Ivana Vasiljević (2023)Previously devised method for density mapping of the Cenozoic basin’s basement is further developed in order to improve the visualization and geological interpretation of the results. The method combines gravity-density inversion with forward modeling and requires gravity anomaly and depth-to-basement data. Although it was primarily designed for application in well-researched basins, such as Pannonian basin, method does not require further constrains. An information on density distribution in the Cenozoic sediments (from density logging or core density measurements) is important ...Ivana Vasiljević. "Density maps from gravity inversion as a tool for the basin basement analysis and imaging" in GEOSCIENCE 2023, Bucharest, Romania, November 9-11, 2023., Bucharest : SGAR - Romanian Society of Applied Geophysics (2023)
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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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Analiza osnovnih indikatora upotrebnog kvaliteta mašina pomoćne mehanizacije na površinskim kopovima uglja
Stevan Đenadić, Dragan Ignjatović, Predrag Jovančić, Milena Lekić, Žarko Aleksić, Ivan Janković (2022)Izbor optimalnog tipa mašine i adekvatno upravljanje kroz životni vek je kompleksan zadatak. Osnovna pitanja koje se postavljaju prilikom rešavanja ovog zadatka vezana su za stepen zadovoljenja rada mašine i optimalan trenutak zamene iste. U ovom radu je izvršena analiza rada dozera koji su u radu na površinskom kopu lignita RB Kolubara. Analizom je obuhvaćeno 4 različita proizvođača dozera a to su: Caterpillar, Dressta i Shantui i Liebherr. Analiza je izvršena sa aspekta ukupnih troškova koji se stvaraju i ...Stevan Đenadić, Dragan Ignjatović, Predrag Jovančić, Milena Lekić, Žarko Aleksić, Ivan Janković . "Analiza osnovnih indikatora upotrebnog kvaliteta mašina pomoćne mehanizacije na površinskim kopovima uglja" in XV međunarodna konferencija o površinskoj eksploataciji OMC 2022, 12-15. oktobar, Zlatibor, Jugoslovenski komitet za površinsku eksploataciju (2022)
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... al Centre for Diffraction Data). The chemical com- position was determined by X-ray fluorescence (XRF) spectros- copy using a PANalytical MiniPal 4 XREF spectrometer equipped with a high-resolution silicon drift detector (SDD). Differential thermal analysis (DTA) was performed on a modernized ...
... , 2016; Daghmehchi et al., 2018). The molar ratio of SiO»: ALO, (3.41%) reflects the large contribution of quartz in the 144 Table 1. Chemical analysis of the CIMx and CC temper. Elements CIMx CC Na>O, % 0.05 1.90 KO, % 1.01 0.03 CaO, % 1.42 28.80 MgO, % 0.76 0.33 ALOa, % 16.72 7.93 ...
... determined according to the Casagrande method (LCPC, 1987) and calculated according to Atterberg (1911). Results and discussion Chemical composition 'The chemical composition of the CIMx indicates that the raw clay material used for the ceramic production consists mainly of AL,}O, (~16 wt.%) ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis
U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...... Forensic Text Analysis Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis | Dalibor ...
... semantic text search expansion. The paper outlines possibilities for further use and analysis on a digital library as a corpus, annotation, tagging, document classification and clustering, as well as sentiment analysis with first results in that direction. Keywords: Omeka, WordNet, full text search ...
... Ransom Notes: An Analysis of Their Content & "Signature"" 6 John Olsson (2004). An Introduction to Language Crime and the Law. London: Continuum International Publishing Group 7 C.S. Michell (2013). Investigating the use of forensic stylistic and stylometric techniques in the analysis of authorship ...Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović. "Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis" in International Scientific Conference “Archibald Reiss Days” Thematic Conference Proceedings Of International Significance, Belgrade, 7-9 November 2017, Academy Of Criminalistic And Police Studies Belgrade (2017)
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Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија
Вељко Мариновић (2022)Bivariate analysis was applied within the cross-correlation in time and the gain function as part of the cross-spectral function in the frequency domain, to the time series of precipitation and discharge of the Oko Bijela and Bosna karst springs in the period 2015-2020. Bivariate analysis showed a very fast reaction of the Oko Bijela spring and a reaction delay at the Bosna spring, which indicate a very weak amortization of the input signal within the Oko Bijela system and ...Вељко Мариновић. "Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија" in Мултидисциплинарна конференција “Kарст 2022 - Значај, стање и перспективе коришћења и заштите ресурса у карсту", Српска академија наука и уметности (2022)
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Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)... was 55, 70% of the same class dozers working in the Kolubara mining basin. The analysis covered four different machine manufacturers, and to provide the necessary objectivity in the interpretation of the results of the analysis, the prefix Type (T1, T2, T3, T4) will be used instead of the names of the ...
... 55, 70% of the same class dozers working in the Kolubara mining basin. The analysis covered four different machine manufacturers, and to provide the necessary objectivity in the interpretation of the results of the analysis, the prefix Type (T1, T2, T3, T4) will be used instead of the names of the ...
... sub-criteria. All the previously mentioned (input) data necessary for the analysis, results of the pair-wise comparison and ranking are presented in Tables 4–18. Because of the calculation complexity of the input data for analysis [33], only the final values of the considered alternatives are given in ...Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245
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Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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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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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... recommendation for the company management is that the activities on maintenance analysis, operation analysis, weak-points analysis, and life cycle analysis adapt to this model, which effectively provides comparative data analysis. The model is easy to use. It can also be used for other systems, with possible ...
... point 3, an availability analysis was obtained based on the time state picture. According to this analysis, availability is the highest for bulldozer B2, which is in accordance with the expert analysis presented here. For the purpose of a more precise comparative analysis of the obtained results, ...
... rated machine is B1. The defined analysis concludes that this machine is the optimal selection, which may be a suggestion for the management of the company in future procurement. O (a) (b) Figure 4. Comparative analysis of all bulldozers availability and analysis according to different models ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... different approach of analysis and assessment of energy security; Section 2 explains the rationale and the principles for modeling energy security with the fuzzy–AHP synthesis model for Symmetry 2020, 12, 908 4 of 42 analysis energy security of the gas sector. This section provides analysis of basic steps ...
... also through the fact that there are no needs to build storage. Expert analysis—questionnaires The methodology of analysis of energy scenarios is shown in the next subsection. 2.2. Methodology Steps The methodology of the analysis of the energy scenarios consisted of several basic steps in which it ...
... manage imprecise criteria and the possibility of integrating the analysis of qualitative and quantitative factors. Symmetry 2020, 12, 908 3 of 42 1.2. Energy Security and Fuzzy Theory Fuzzy theory finds its purpose in the analysis and modeling of complex systems, starting from the idea that complex ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Analysis of Belt Weigher Accuracy Limiting Factors
Aleksandrović Snežana, Jović Mihajlo (2011)Aleksandrović Snežana, Jović Mihajlo. "Analysis of Belt Weigher Accuracy Limiting Factors" in International Journal of Coal Preparation and Utilization 31 no. 5, :Taylor&Francis, Philadelphia (2011): 223-241. https://doi.org/10.1080/19392699.2011.552896
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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GIS analysis of dissipation time of landscape in the Devil's city (Serbia)
Valjarević A., Srećković- Batoćanin Danica, Živković D., Perić, M.. "GIS analysis of dissipation time of landscape in the Devil's city (Serbia)" in Acta Montanistica Slovaca (2015): 148-155
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XRD and SEM analysis of urinary stones
Miljević Miljana, Rosić Aleksandra (2010)Miljević Miljana, Rosić Aleksandra. "XRD and SEM analysis of urinary stones" in Ninth young researchers conference materials sciences and engineering : Program and Book Abstracts, december 20-22 2010, Belgrade, Serbia, Serbian Academy of Sciences and Arts, Beograd:Institute of Technical Sciences of SASA (2010): 38-38
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Phase and demographic statistical analysis of urinary stones
Miljević Miljana, Rosić Aleksandra (2011)Miljević Miljana, Rosić Aleksandra. "Phase and demographic statistical analysis of urinary stones" in Program ; and the Book of Abstracts : 1st Conference of the Serbian Ceramic Society, 1CSCS-2011., March 17-18. 2011., Belgrade, Serbia, Beograd:The Serbian Ceramic Society (2011): 48-48
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Time series analysis of Saraw spring - SE of Sulaimaniya (Iraqi Kurdistan region)
Ali S.S., Stevanović Zoran (2010)Ali S.S., Stevanović Zoran. "Time series analysis of Saraw spring - SE of Sulaimaniya (Iraqi Kurdistan region)" in Advances in Research in Karst Media, Heidelberg:Springer (2010): 89-94
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Ore Microscopy Analysis Methods In Mineral Concentration Processis.
Tomanec Rudolf, Lazić Predrag, Gaćina R, Bajić S.. "Ore Microscopy Analysis Methods In Mineral Concentration Processis." in Proceedings of 5Th JUBILEE BALKANMINE CONGRESS AND COMERCIAL EXHIBITION, Ohrid: (2013): 779-785
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Analysis of thermo-electrical characteristics of mining cables
Aleksandrović Snežana, Damnjanović Vesna. "Analysis of thermo-electrical characteristics of mining cables" in INFOTEH - Jahorina 2015, Sarajevo:Elektrotehnički fakultet, Istočno Sarajevo (2015): 122-125
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Phytoecological analysis of primary and secondary colonization on copper mine wastes (Bor, Serbia)
Ranđelović Dragana, Jovanović Slobodan (2013)Ranđelović Dragana, Jovanović Slobodan. "Phytoecological analysis of primary and secondary colonization on copper mine wastes (Bor, Serbia)" in Abstracts of 11th Symposium on Flora of Southeastern Serbia and Neighbouring Regions, Niš:University of Niš, Biological society Dr Sava Petrović (2013): 36