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Упит dcterms_subject_txt:ARCR MA model

960 items

  • Primena savremenih matematičkih modela za simulaciju kretanja podzemnih voda i transporta zagađenja na primeru izvorišta Vrbas

    Dragan Kaluđerović (2000)
    Matematički modeli, podzemne vode, transport zagađenja, Vrbas

  • Potencijalnost tercijarnih magmatskih kompleksa Vardarske zone Srbije sa aspekta arhitektonskog građevinskog kamena

    Lidija M. Kurešević (2014-01-22)
    U sastavu Vardarske zone, jedne od tektonski najsloženijih oblasti Balkanskogpoluostrva, u čijem domenu se odvijalo otvaranje i zatvaranje okeanskih prostora isubdukcija koja je dovela do intenzivne magmatske aktivnosti pretežno tokom tercijara,danas se nalazi veći broj magmatskih kompleksa.U ovoj disertaciji su obrađene geološke karakteristike trinaest izabranih magmatskihkompleksa Vardarske zone tercijarne starosti, i laboratorijski određena mineraloškopetrografskasvojstva stena u njihovom sastavu i fizičko-mehanička svojstva kamenaznačajna za utvrđivanje mogućnosti njihove primene za dobijanje blokovaarhitektonskog građevinskog kamena iz kojih se dobijaju ploče za oblaganjegrađevinskih ...
    Arhitektonski građevinski kamen, magmatske stene, Vardarska zona, Srbija
    ... granodiorita I-tipa. Vrednosti apsolutne starosti ovih stena variraju: za granodiorite od 35 do 16 Ma, za granite od 23 do 14 Ma, za stražaničke granodiorite od 19 do 14 Ma, za pegmatite 10,7±1 Ma (Deleon, 1969). Stariji granodioriti I-tipa su u otkrivenim delovima cerskog plutona najviše zastupljeni ...
    ... ispitivanja izotopske starosti ovih magmatskih kompleksa nalaze se u rasponu od 35,6 do 29,1 Ma. Međutim, njihove 51 srednje vrednosti su vrlo bliske, npr. 30,7±0,5 Ma za granodiorite Boranje i 30,1±0,3 Ma za granitoide Kopaonika i okolnih manjih tela. Na osnovu ovih podataka, Karamata i dr. (1992b) ...
    ... od 23,14±0,73 Ma. Lamprofirske stene se javljaju u vidu manjih dajkova, silova i kao fragmenti u piroklastičnim stenama. Određene apsolutne starosti trahibazalta, minete i lamproita su u opsegu od 31 do 29 Ma, dok je određena starost leukominete i bazalta u opsegu od 25 do 24 Ma. Vulkanoklastična ...

  • Potencijalnost tercijarnih magmatskih kompleksa Vardarske zone Srbije sa aspekta arhitektonskog građevinskog kamena

    Lidija M. Kurešević (2014-01-22)
    U sastavu Vardarske zone, jedne od tektonski najsloženijih oblasti Balkanskogpoluostrva, u čijem domenu se odvijalo otvaranje i zatvaranje okeanskih prostora isubdukcija koja je dovela do intenzivne magmatske aktivnosti pretežno tokom tercijara,danas se nalazi veći broj magmatskih kompleksa.U ovoj disertaciji su obrađene geološke karakteristike trinaest izabranih magmatskihkompleksa Vardarske zone tercijarne starosti, i laboratorijski određena mineraloškopetrografskasvojstva stena u njihovom sastavu i fizičko-mehanička svojstva kamenaznačajna za utvrđivanje mogućnosti njihove primene za dobijanje blokovaarhitektonskog građevinskog kamena iz kojih se dobijaju ploče za oblaganjegrađevinskih ...
    Arhitektonski građevinski kamen, magmatske stene, Vardarska zona, Srbija
    ... granodiorita I-tipa. Vrednosti apsolutne starosti ovih stena variraju: za granodiorite od 35 do 16 Ma, za granite od 23 do 14 Ma, za stražaničke granodiorite od 19 do 14 Ma, za pegmatite 10,7±1 Ma (Deleon, 1969). Stariji granodioriti I-tipa su u otkrivenim delovima cerskog plutona najviše zastupljeni ...
    ... ispitivanja izotopske starosti ovih magmatskih kompleksa nalaze se u rasponu od 35,6 do 29,1 Ma. Međutim, njihove 51 srednje vrednosti su vrlo bliske, npr. 30,7±0,5 Ma za granodiorite Boranje i 30,1±0,3 Ma za granitoide Kopaonika i okolnih manjih tela. Na osnovu ovih podataka, Karamata i dr. (1992b) ...
    ... od 23,14±0,73 Ma. Lamprofirske stene se javljaju u vidu manjih dajkova, silova i kao fragmenti u piroklastičnim stenama. Određene apsolutne starosti trahibazalta, minete i lamproita su u opsegu od 31 do 29 Ma, dok je određena starost leukominete i bazalta u opsegu od 25 do 24 Ma. Vulkanoklastična ...

  • Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić, (2019)

  • Model upravljanja investicionim projektima otvaranja površinskih kopova uglja

    Cvjetko P. Stojanović (2015-04-27)
    Brze promene u okruženju pred rukovodioce postavljaju mnogobrojne zahteve,pre svega, one koji se tiču ostvarenja ciljeva u zadatom vremenu i raspoloživimsredstvima što zahteva fleksibilan pristup u organizovanju aktivnosti i efikasnost unjihovom sprovođenju.Upravljanje projektima, bilo koje vrste, suštinski, predstavlja veoma složenproces odlučivanja uslovljen velikim brojem ulaznih faktora. Ti faktori treba daomoguće fokusiranje na prioritete i ciljeve, praćenje realizacije, fleksibilnost uprevazilaženju teškoća, prilagođavanje promenama, te kontrolu nad ostvarenimrezultatima. Ovakav način upravljanja zahteva korišćenje proverenih tehnika i alata tetimski rad angažovanih na ...
    Projekat, upravljanje, metodologija, površinska eksploatacija, model

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • 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 ...
    rizik, inženjerski sistemi, fazi logika, višekriterijumske metode

  • Fragmenting of cylindrical rock specimens under explosive load: Comparison between model and laboratory results

    Slavko Torbica, Veljko Lapcevic (2016)
    rock fragmentation, rock breakage by explosives, fragmentation model, laboratory tests, blasting

  • Applying the Fuzzy Inference Model in Maintenance Centered to Safety: Case Study – Bucket Wheel Excavator

    Predrag Jovančić, Miloš Tanasijević, Vladimir Milisavljević, Aleksandar Cvjetić, Dejan Ivezić, Uglješa Bugarić (2020)

  • Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process

    Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic (2022)
    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 ...
    višekriterijumsko odlučivanje, rotorni bageri, modernizacija, ekspertska analiza

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... the mass fraction of oil in the mixture of water and oil: 0 = a {(ma + me) () The mass fraction of surfactant in the mixture of all three components in ternary mixtures: = mcel(ma + ma + mc) (2) Oor: ?= (mc + mo)/(Ima + ma + mc + mo) (3) when two surfactants or mixtures of surfactant and ...

  • Model of the Geomagnetic reference field of the Republic of Serbia

    Spomenko J. Mihajlović, Vesna Cvetkov (2024)

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • Одређивање оптималне производње дубинске пумпе на клипним шипкама

    Небојша Савић (2024)
    Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...
    дубинска пумпа, оптимизација, производња, потисни вентил
    ... H3MCMĆHHM TeXHHUKHM KapaKTepHcTHKaMa INIDpH peMOHTy, OBC 2 OynlorHHe NOKa3ac Cy M 3HauajHO T000JbImaPbe y yX)KHHH TpajaPba MeDypeMOHTHor repuHoj/ma, nIpH ueMy je NoHeTa oJUIyKa a he ce 30or HcTHX KapaKTepHcTHKa H CBHX OcTaJIHX JexumrTa Ha(bTHor nojba „HH“ uacru TH myMnu yrpaljuBarH npH peMOHTy ...
    ... CKOpO HeKoMIIpecH0OH;TaH, 5 TaJla BpJIO MaJIe IIDOMCHE y 3arpeMHHH 3060r MaJIOr KpeTaFba KJIHIIA, H323HBa BEJIHKC TIIpOMeHE y HpHTHCKy. V cHyuajy ma je (D)TryMJ)L BHIHC KOMIIpecHOHJaH (MenaBHHa raca H TeuHOCTH), IIpOMeHa y 3aripeMHHH jJe moTpeOHa 3a onaJame HH ToBehaBaHbe HpHTHcKa, OJIHOCHO 3 ...
    ... KOpHCTe y HyMHaMa HaQ(pTHor moJba „HH“ cy 1500 mm u neOJbHHe aHma 5-10 mm. IIpanBM onaOuMp KNMma, OJHHOCHO 323Opa, TeEMeCJbH Cc Ha BHCKO3HTeTy (pyuM/ma KoOjH ce mHyMma. IIpeMa HcKycTBy, 3a3op o 0,0254 mm (0, 001 in) ca KMHMHOM KoOjH ce Hmo API craHmapny o3HadaBa Ca O3HaKOM 1 TIpHMeMby]e Ce yTHaBHOM ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Osnaživanje energetske tranzicije u sektoru domaćinstva u Srbiji: integrativni pristup

    Boban Pavlović (2023)
    Glavni cilj istraživanja bio je da se razvije metodološki pristup koji bi podržao proces energetskog planiranja tranzicije u grejanju domaćinstava, uzimajući u obzir specifičnosti ovog sektora. Kako bi se procenili mogući tokovi energetske tranzicije u grejanju domaćinstava i analizirali politički instrumenti za ubrzanje ovog procesa, razvijen je simulacioni model zasnovan na agentima (Agent Based Model – ABM). Simulacioni model je primenjen na slučaju energetske tranzicije u sektoru domaćinstva u Srbiji. Prethodno su kroz istraživanje prikupljeni podaci o grejanju domaćinstava ...
    energetska tranzicija, energetsko planiranje, energetsko modeliranje, obnovljivi izvori energije, domaćinstva, ponašanje potrošača

  • Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs

    Saša Milanović, Ljiljana Vasić (2021)
    Earth and Planetary Sciences (miscellaneous), Water Science and Technology

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... the values obtained by experimental measurements [6]. Model 1 – Determining the parameters by applying the least square method. The Least Square Method is mainly used to obtain the parameters K and n which represents a common model. Model 2 — Determining the parameters through the application ...
    ... of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analysis of a simplified model for determining ...
    ... ofjers the analysis of the simplified model for defining parameters of the oscillation equation at the Kovilovača open pit, in eastern Serbia. On the basis of calculation on concrete example of mass blasting, it has been stated that the simplified model may be used in order to calculate rock mass ...

  • Hybrid Stochastic-Grey Model to Forecast the Behavior of Metal Price in the Mining Industry

    Zoran Gligorić, Miloš Gligorić, Dževdet Halilović, Čedomir Beljić, Katarina Urošević (2020)
    cena metala, neodređenosti, prognoza, stohastički sivi model, singularna analiza spektra

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... fuzzy inference approach was used in an outcome calculation. The main benefit of the proposed model is being able to use numerical and linguistic data in a risk assessment model. The proposed risk assessment model, using fuzzy logic conclusions and min–max composition, was used on a mobile crushing machine ...
    ... fuzzy inference approach was used in an outcome calculation. The main benefit of the proposed model is being able to use numerical and linguistic data in a risk assessment model. The proposed risk assessment model, using fuzzy logic conclusions and min-max composition, was used on a mobile crushing machine ...
    ... incorporated this into a comprehensive model for risk level assessment for a certain machine used in the mining industry. The example of risk assessment model developed in this research is for a mobile crushing machine, the Lokotrack LT 1213S. The developed model presents a new methodological approach ...