Претрага
72 items
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Assessment of the maximum possible extension of bucket wheel SchRs740 boom based on static and dynamic calculation
Petrović Branko, Petrović Ana, Ignjatović Dragan, Grozdanović Ines, Kozak Dražan , Katinić Marko (2016)Petrović Branko, Petrović Ana, Ignjatović Dragan, Grozdanović Ines, Kozak Dražan , Katinić Marko. "Assessment of the maximum possible extension of bucket wheel SchRs740 boom based on static and dynamic calculation" in Tehnučki vjesnik 23 no. 4, Slavonski brod: (2016): 1233-1238
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Optimal dynamic management of exploitation life of the mining machinery: models with undefined interval
Vujić Slobodan, Miljanović Igor, Maksimović Svetozar, Milutinović Aleksandar, Benović Tomo, Hudej Marijan, Dimitrijević Bojan, Čebašek Vladimir, Gajić Grozdana (2010)Vujić Slobodan, Miljanović Igor, Maksimović Svetozar, Milutinović Aleksandar, Benović Tomo, Hudej Marijan, Dimitrijević Bojan, Čebašek Vladimir, Gajić Grozdana. "Optimal dynamic management of exploitation life of the mining machinery: models with undefined interval" in Journal of Mining Science (2010): 425-430
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The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study
Lola Tomić, Vesna Karović Maričić, Dušan Danilović. "The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study" in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Taylor & Francis (2021). https://doi.org/10.1080/15567036.2021.1936303
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Foliation impact on the dynamic properties of selected samples of the barrier dam site Prvonek: Right side
Majstorović Jelena, Tokalić Rade, Lutovac Suzana, Savković Snežana. "Foliation impact on the dynamic properties of selected samples of the barrier dam site Prvonek: Right side" in Underground Mining Engineering no. 29, Beograd:University of Belgrade – Faculty of Mining and Geology (2016): 1-9
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Optimal dynamic management of exploitation life of the mining machinery: models with limited interval
Vujić Slobodan, Miljanović Igor, Boševski Stefko, Kasaš Karolj, Milutinović Aleksandar, Gojković Nebojša, Josipović Pejović Milena, Dimitrijević Bojan, Gajić Grozdana, Čebašek Vladimir (2010)Vujić Slobodan, Miljanović Igor, Boševski Stefko, Kasaš Karolj, Milutinović Aleksandar, Gojković Nebojša, Josipović Pejović Milena, Dimitrijević Bojan, Gajić Grozdana, Čebašek Vladimir. "Optimal dynamic management of exploitation life of the mining machinery: models with limited interval" in Journal of Mining Science 46 no. 5, Germany/USA:Springer (2010): 554-560
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Korelacione zavisnosti parametara zbijanja i nosivosti donjih slojeva saobraćajnica
Milan Bogdanović (2024)Disertacija se bavi korelacionim zavisnostima parametara zbijanja i nosivosti podloge (donji slojevi saobraćajnica). izgrađene od prirodnih sitnozrnih i krupnozrnih materijala. Cilj istraživanja je bio utvrđivanje pouzdanih korelacija između izabranih parametara materijala koji opisuju stanje slojeva podloge što je doprinelo predlogu načina upotrebe i definisanju vrednosti dinamičkog CBR uređaja (CBRd). Ova disertacija prikazuje rezultate opsežnih laboratorijskih i in situ ispitivanja u kojima se procenjuje nosivost materijala pomoću navedenih metoda. Ogromna baza podataka omogućila je razvoj nekih korelacija između različitih statičkih ...korelacija parametara zbijanja i nosivosti, donji slojevi saobraćajnica, laboratorijska i terenska ispitivanja, dinamički kalifornijski indeks nosivosti CBRdMilan Bogdanović. Korelacione zavisnosti parametara zbijanja i nosivosti donjih slojeva saobraćajnica, Beograd : [M. Bogdanović], 2024
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Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM
Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric (2022)The risk assessment of engineering systems represents an important part of the quality of service and dependability. The existing methods for risk evaluation use crisp sets for rating partial indicators’ proposition and their cumulative products as an overall indicator. In this paper, existing FMEA and FMECA methods have been improved using the fuzzy expert system for calculating the risk priority number. The application of fuzzy logic allows the use of linguistic descriptions for risk analysis. In this way, the ...Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric. "Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM" in Mathematics, MDPI AG (2022). https://doi.org/10.3390/math10050811
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Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process
This paper presents a methodology for evaluating and ranking different bucket wheel excavators (BWE) for determining which machine should enter in the process of revitalization and modernization. Various multicriteria methods are used. Combining them achieves the best effect when choosing BVE for the modernization process. AHP, TOPSIS, VIKOR, and PROMETHEE methods are used. The hybrid models are developed from the multi-criteria decision making (MCDM) methods and they are used to evaluate the basic indicators that characterize the operation of ...Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic. "Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process" in Expert Systems with Applications, Elsevier BV (2022). https://doi.org/10.1016/j.eswa.2022.117199
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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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Razvoj algoritma fuzzy optimizacije u hidrodinamičkoj analizi za potrebe projektovanja sistema odbrane od podzemnih voda
Dragoljub Bajić, Dušan Polomčić (2019)Sistemi za odbranu od podzemnih voda se koriste za zaštitu hidrotehničkih objekata, priobalja, meliorativnih područja, naselja, rudnika, industrijskih područja, predstavljajući značajne segmente bez kojih bi funkcionalnost ovih objekata i područja bila dovedena u pitanje. Posebno složeni sistemi odbrane od podzemnih voda se karakterišu kod ležišta mineralnih sirovina, imajući u vidu njihovu dinamičnost, koja se ogleda u stalnom širenju ležišta, kao i činjenicu da ova ležišta prodiru duboko u stensku masu različitog strukturnog tipa poroznosti, a time i u podzemne ...upravljanje podzemnim vodama, hidrodinamički model, fuzzy logika, trougaoni fuzzy brojevi, znanje eksperta, optimizacijaDragoljub Bajić, Dušan Polomčić. "Razvoj algoritma fuzzy optimizacije u hidrodinamičkoj analizi za potrebe projektovanja sistema odbrane od podzemnih voda" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1904527B
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Primena fuzzy optimizacije u hidrodinamičkoj analizi
znanje eksperta, optimizacija, trougaoni fuzzy brojevi, upravljanje podzemnim vodama, fuzzy logika, hidrodinamički modelDragoljub Bajić, Dušan Polomčić, Jelena Ratković, Predrag Pajić. "Primena fuzzy optimizacije u hidrodinamičkoj analizi" in XVII Kongres geologa Srbije (Zbornik radova XVII srpskog geološkog kongresa), Vrnjačka Banja, 17-20.05.2018., Srpsko geološko društvo (2018)
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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Razvoj modela upravljanja cirkulacijom u postupku bušenja korišćenjem neuro fazi sistema zaključivanja
Seyed Ali S. Razeghi (2022)Gubitak isplake predstavlja nekontrolisano isticanje bušaćeg fluida kroz formacije kao što su kaverne, pukotine, ili drugi slojevi. Tradicionalne metode procene gubitka isplake se zasnivaju na primeni seizmičkih podataka ili pronalasku „mesta“ gubitka isplake na osnovu raspoloživih podataka iz susednih bušotina. Međutim, ove metode procene nisu pouzdane.‘ U disertaciji je izvršena analiza i procena uticaja parametara bušenja, geoloških faktora, karakteristika formacije i fluida na gubitak isplake kao i na formiranje fraktura u formacijama. Uspostavljeni su modeli koji podrazumevaju proces obrade ...Seyed Ali S. Razeghi. Razvoj modela upravljanja cirkulacijom u postupku bušenja korišćenjem neuro fazi sistema zaključivanja, Beograd : [S. Razeghi], 2022
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Different aspects of soft computing methods application for blasting in mining
Mining is a global industry that is of great importance for every product which is used by human. For mining, process efficiency, reducing production downtime, increasing profitability are all very important. Soft computing tehnologies (SC) are helping in the process of transforming the mining industry into a safer and more environmental friendly industry, but keeping in mind the financial aspect as well. In this paper some of fields of blasting activities in which the SC methods have been applicated, ...Katarina Urošević, Jelena Zakonović, Radmila Gaćina. "Different aspects of soft computing methods application for blasting in mining" in Underground mining engineering , Belgrade : University of Belgrade - Faculty of Mining and Geology (2019). https://doi.org/10.5937/podrad1935065U
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Računarski integrisani sistemi za podršku odlučivanju i upravljanju u PMS, zasnovani na fuzzy logici
Igor Miljanović (2007)Igor Miljanović. Računarski integrisani sistemi za podršku odlučivanju i upravljanju u PMS, zasnovani na fuzzy logici, Beograd:Rudarsko Geološki Fakultet, 2007
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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 variablesDragoljub 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 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 ...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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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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Development of Integrated Fuzzy Model for Mine Management Optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)Technoeconomic, environmental and safety criteria generally affect the management of metallic and non-metallic mining operations. The first basic question that needs to be addressed when planning ore mining is which methods are adequate and what is the optimal mining technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered synonymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increasingly important. Given that the natural language ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of Integrated Fuzzy Model for Mine Management Optimization" in Comptes rendus de l’Académie Bulgare des Sciences, Bulgarian Academy of Sciences (2023). https://doi.org/10.7546/CRABS.2023.09.12
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Tehnike mekog računarstva u hidrogeologiji
Meko računarstvo predstavlja skup inteligentnih metoda koje se, za razliku od klasičnog računarstva, zasnivaju na približnom izračunavanju i zaključivanju. Ove metode imitiraju biološke procese kao što su neuroni u mozgu, evolucijski procesi i ljudska sposobnost zaključivanja, što omogućava efikasno rešavanje problema koje je teško rešiti tradicionalnim matematičkim i računarskim metodama. Tehnike mekog računarstva, poput veštačkih neuronskih mreža (ANN), fazi logike i adaptivnih neuro-fazi sistema zaključivanja (ANFIS), su široko korištene i pokazale su se pouzdanim i jednostavnim za simulaciju složenih ...Ivan Drakulić, Dušan Polomčić, Jelena Ratković, Dragoljub Bajić. "Tehnike mekog računarstva u hidrogeologiji" in Zbornik radova XVII srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739966