Претрага
651 items
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Cementation of sandstones from Paleozoic, Mesozoic and Tertiary formations in Libya
Vasić Nebojša, Selah Turki, Srećković Batoćanin Danica, Savić Marija, Sherif Khalid, Andrić Nevena (2011)Vasić Nebojša, Selah Turki, Srećković Batoćanin Danica, Savić Marija, Sherif Khalid, Andrić Nevena. "Cementation of sandstones from Paleozoic, Mesozoic and Tertiary formations in Libya" in Proceedings, 1st International Conference “HARMONY OF NATURE AND SPIRITUALITY IN STONE”, 17-18 March 2011, Kragujevac, Kragujevac:Stone Studio Association (2011): 229-341 M33
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Multi - Attribute Technological Modeling of Coal Deposits Based on the Fuzzy TOPSIS and C - mean Clustering Algorithms
Gligorić Miloš, Gligorić Zoran, Beljić Čedomir, Torbica Slavko, Štrbac-Savić Svetlana, Nedeljković Jasmina (2016)Gligorić Miloš, Gligorić Zoran, Beljić Čedomir, Torbica Slavko, Štrbac-Savić Svetlana, Nedeljković Jasmina. "Multi - Attribute Technological Modeling of Coal Deposits Based on the Fuzzy TOPSIS and C - mean Clustering Algorithms" in Energies 9 no. 12, Basel:MDPI AG, Basel, Switzerland (2016). https://doi.org/10.3390/en9121059 M22
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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 М21а
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021) М33
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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 М33
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Машине и помоћни радови на површинским коповима
Драган Игњатовић, Томислав Шубарановић, Стеван Ђенадић. Машине и помоћни радови на површинским коповима, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2021 Без категорије
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Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines
This paper presents the model for the identification of reference points on the lifetime curve of engineering systems. This curve commonly represents the increase and decline of failure in relation to time. A direct correlation between failure rate and costs is assumed in this paper, therefore, statistical and empirical analysis of costs provided reference points. This approach is used for positioning stages of the engineering system’s lifetime with a minimal number of failures and costs, regardless of whether these ...Electrical and Electronic Engineering,Industrial and Manufacturing Engineering, Control and Optimization, Mechanical Engineering, Computer Science (miscellaneous), Control and Systems EngineeringUgljesa Bugarić, Milos Tanasijević, Stevan Djenadić, Dragan Ignjatović, Ivan Janković. "Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines" in Machines, MDPI AG (2022). https://doi.org/10.3390/machines10110995 М22
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Održivi razvoj rudarskog sektora
Imajući u vidu sve veću zabrinutost za stanje životne sredine i socioekonomsku nejednakost, sektorska održivost bez obzira na privrednu delatnost, privlači sve veću pažnju kako globalno tako i lokalno. U tom smislu postoji konsenzus kod svih zainteresovanih strana da čovečanstvo treba da usvoji mere za promenu trenutno neodrživih obrazaca proizvodnje i potrošnje. Rudarska industrija igra fundamentalnu ulogu u ovom kontekstu, privlačeći pažnju kroz različite inicijative tokom poslednjih decenija. Neke od njih su čak i primenjene u praksi ali konsenzus ...Vladimir Pavlović, Dragan Ignjatović, Tomislav Šubaranović. "Održivi razvoj rudarskog sektora" in 15. Međunarodna konferencija o površinskoj eksploataciji OMC 2022, Zlatibor, 12.-15.10.2022., Jugoslovenski komitet za površinsku eksploataciju (2022) М33
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Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)
The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić. "Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)" in Proceedings of the XVIII ECSMGE 2024 geotechnical engineering challenges to meet current and emerging needs of society, Lisbon, 26-30 August 2024, CRC Press (2024). https://doi.org/10.1201/9781003431749-356 М33
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Approximation of the number of roots that do not lie on the unit circle of a self-reciprocal polynomial
Dragan Stankov (2024)We introduce the ratio of the number of roots not equal to 1 in modulus of a reciprocal polynomial Rd(x) to its degree d. For some sequences of reciprocal polynomials we show that the ratio has a limit L when d tends to infinity. Each of these sequences is defined using a two variable polynomial P(x,y) so that Rd(x) = P(x,xn). For P(x,y) we present the theorem for the limit ratio which is analogous to the Boyd-Lawton limit formula ...Dragan Stankov. "Approximation of the number of roots that do not lie on the unit circle of a self-reciprocal polynomial" in The book of abstracts XIV symposium "mathematics and applications” Belgrade, Serbia, December, 6–7, 2024 , Univerzitet u Beogradu, Matematički fakultet (2024) М64
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Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process
Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M (2014)Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M. "Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process" in Journal of the Serbian Chemical Society 79 no. 8, Belgrade:Serbian Chemical Society (2014): 977-991. https://doi.org/10.2298/JSC131001143N M23
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The environmental and health damage caused by the use of coal
Поред нафте и природног гаса, угаљ је најзаступљенији необновљиви извор фосилних горива који се тренутно користи широм света. Иако се последњих деценија улажу континуирани напори да се употреба угља замени различитим алтернативним изворима енергије (хидро, нуклеарна, ветар, соларна), очекује се да ће угаљ у догледној будућности остати најважнији извор топлотне и електричне енергије у свету. Упркос неоспорном значају угља у свету, његова употреба наноси озбиљну штету животној средини и здрављу људи. У овом тексту предавања детаљно ће бити размотрени ...Goran Tasev, Petre Makreski, Gligor Jovanovski, Dragana Životić, Ivan Boev, Rade Jelenkovic. "The environmental and health damage caused by the use of coal" in ChemTexts, Springer Science and Business Media LLC (2025). https://doi.org/10.1007/s40828-024-00200-4 М23
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Геолошке карактеристике лежишта опекарских сировина у Кикинди
Marojkin Katarina, Simić Vladimir (2018)Marojkin Katarina, Simić Vladimir. "Геолошке карактеристике лежишта опекарских сировина у Кикинди" in 17. Конгрес геолога Србије, Врњачка Бања, 17‐20. мај 2018 1, Vrnjačka banja:Srpsko geološko društvo (2018): 380-384 M64
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Karbonatne mineralne sirovine Crne Gore
Božović Darko, Radusinović Slobodan, Simić Vladimir. "Karbonatne mineralne sirovine Crne Gore" in 17. Конгрес геолога Србије, Врњачка Бања, 17‐20. мај 2018 1, Vrnjačka banja:Srpsko geološko društvo (2018): 263-268 M64
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The role of English in the initial courses of geoforensics
Лидија Беко, Александар Лабан (2017)Лидија Беко, Александар Лабан. "The role of English in the initial courses of geoforensics" in Archibald Reiss Days, Academy of criminalistic and police studies (2017) М14
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Процена ризика од удеса на флотацијском јаловишту "Ваља Фундата
Милица Илиевски (2024)У овом завршном раду под називом: „Процена ризика од удеса на флоатацијском јаловишту „Ваља Фундата““ кроз 8 поглавља описане су примењене методе за управљање флотацијском јаловином, као и могући сценарији удеса који могу настати услед нестабилности брана или природних катастрофа.Рад користи технике попут FMEA и ALARP за анализу ризика, при чему се ризик дефинише као функција вероватноће и последица инцидента.Препоручене су мере за смањење ризика и унапређење стабилности брана,укључујући редовно одржавање и надградњу инфраструктуре.Резултати рада указују да је ризик ...Милица Илиевски. Процена ризика од удеса на флотацијском јаловишту "Ваља Фундата, 2024
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The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers
One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović. "The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers" in 7th International Symposium Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2019) М33
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Control of substructure construction of railways in the Republic of Serbia
Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović. "Control of substructure construction of railways in the Republic of Serbia" in International Conference On Contemporary Theory and Practice in Construction XV, Banja Luka 16-17 jun 2022., University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy (2022) М33
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Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations
Lutovac Suzana, Medenica Dragan, Gluščević Branko, Tokalić Rade, Beljić Čedomir. "Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations" in Energies no. Energies 2016, Vol 9, issue 8, 617, Basel, Switzerland:MDPI AG (2016). https://doi.org/doi:10.3390/en9080617 M21
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Analiza i rešavanje problema pogona rotora rotornog bagera SRs2000 – put ka modernizaciji
Dragan Novaković, Predrag Jovančić (2017)Ovaj rad ima primarni cilj da definiše modernizaciju i revitalizaciju pogonske grupe rotora bagera SRs 2000 kako bi se obezbedilo povećanje pouzdanosti bagera, a time i povećanje vremenskog i kapacitetnog iskorišćenja i smanje troškovi održavanja. Sekundarni cilj, i ne manje važan, je unifikacija elemenata kako pogonske grupe tako i ostalih sklopova predviđenih za buduću modernizaciju i revitalizaciju na svim bagerima SRs 2000 koji rade na površinskim kopovima Elektroprivrede Srbije.Dragan Novaković, Predrag Jovančić. "Analiza i rešavanje problema pogona rotora rotornog bagera SRs2000 – put ka modernizaciji" in Međunarodna konferencija Ugalj 2017, Zlatibor, 11-14. oktobar 2017., Belgrade : Yugoslav Opencast Mining Committee (2017) М33