Претрага
712 items
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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 ...... process (AHP) ranking method. The model contains structural decomposition of availability as an indicator quality of service of the engineering system, their independent analysis, and ranking, and finally gives the possibility of composition. Structural definitions of each outcome are given in accordance ...
... 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, ...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
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The application of fuzzy optimization in hydrodynamic analysis
Bajić Dragoljub, Polomčić Dušan, Ratković Jelena, Pajić Predrag. "The application of fuzzy optimization in hydrodynamic analysis" in Proceedings of the XVII Serbian Geological Congress, Belgrade:Serbian Geological Society (2018): 429-432
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Analysis of foundation settlement from progressive moistening of silty clay
Rakić Dragoslav, Šušić Nenad, Ljubojev Milenko. "Analysis of foundation settlement from progressive moistening of silty clay" in Mining Enginerering - Rudarski radovi no. 1, Bor, Srbija:Mining and metallurgy institute Bor (2012): 1-10
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Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca
Na izvorištu „Vić bare“ formiranom u aluvijonu Save za vodosnabdevanje Obrenovca u poslednje dve decenije izvedeno je više detaljnih hidrogeoloških istraživanja u cilju utvrđivanja rezervi podzemnih voda i izdvajanja zona sanintarne zaštite. Monitoring podzemnih voda u celoj zoni izvorišta, za potrebe izrade hidrodinamičkog modela, omogućio je i hidrauličku analizu odnosa površinskih voda reke Save i podzemnih voda na izvorištu sa kojeg se trenutno zahvata do 310 l/s vode. U radu su prikazani rezultati korelacione analize, odnosno ispitivanja na ...Dragoljub Bajić, Bojan Hajdin, Dušan Polomčić, Vesna Ristić Vakanjac. "Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca" in XVI Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 28.09.-02.10.2022., Beograd : Rudarsko-geološki fakultet (2022)
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Hydrodynamic analysis of radial collector well ageing at Belgrade well field
The origin and effect of hydraulic resistances on the rate of ageing of radial collector wells are identified through numerical hydrodynamic analysis. The research includes hydrodynamic modeling of one such well with new laterals at Belgrade well field. The performance of the laterals is aggravated by rapid ageing. The change in the hydraulic parameters of the laterals during the first decade of operation is analyzed through simulations of the groundwater regime with realistically specified geometries and hydraulics of the ...Đorđije Božović, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković. "Hydrodynamic analysis of radial collector well ageing at Belgrade well field" in Journal of Hydrology, Elsevier BV (2019). https://doi.org/10.1016/j.jhydrol.2019.124463
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The Analysis of landslide dynamics based on GNSS monitoring-A case study
Abolmasov Biljana, Milenković Svetozar, Jelisavac Branko, Pejić Marko, Radić Zoran. "The Analysis of landslide dynamics based on GNSS monitoring-A case study" in Proceedings of XII IAEG Congress, Italy, Torino 2 no. 1, :Springer International Publishing (2014): 143-146
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Analysis of attainable technical-technological results work open pit mines electrical industry – EPS of Serbia
Savković Snežana, Majstorović Jelena, Jovančić Predrag. "Analysis of attainable technical-technological results work open pit mines electrical industry – EPS of Serbia" in 5th International Symposium Mining and Environmental protection, Vrdnik-Beograd, Srbija:RGF (2015): 258-261