Претрага
375 items
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... deformation stages. Based on the style of deformation, structures generated during progressive deformation of D, are comparable to hose of “phases II and II” previously established as syn- metamorphic folding stages in the Vlasina Unit (Petrović 1969). Indirect constraints on the age of both deformation ...
... in a Un it S e r b o - M a c e d o n i a n Ma ss if Struma Unit (undiff.) NIB Frolosh Unit }}} crnook-Osogovo-Lisets complex Ge ti cu m 'Kratovo-Zletovo / K/Ar thermochronology published data* Rb-Sr thermochronology O “oAr/ 9A tl L 360+1)| 122-137| published data* ...
... — ——— Š |E uate-Variscan magmatic rocks |_____ sredna gora (undiff.) ___ OE ıate cambrian to Silurian magmatic rocks Struma Unit (undiff. Ge ti cu m IJ pre-Middle cambrian magmatic rocks - |00 Crnook-Osogovo-Lisets complex — Fig.3 Tectonic map of the study area with structural elements (after ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Efficiency and lifetime of medium voltage transformers
Snežana Aleksandrović, Vesna Damnjanović. "Efficiency and lifetime of medium voltage transformers" in XVI International Scientific – Professional Symposium, INFOTEH, Jahorina, 22. mart - 24. mart 2017., Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2017)
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Projection of SO2 emissions in coal power plants in Serbia
Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...... Arad TPP: 50 MW Rom?2 - lasi TPP: 600 MW. Rom3 - Paroseni TPP: 150 MW Rom4 - Rovinari TPP: 990 MW Rom5 - Turceni TPP: 990 MW Rom6 - Craiova II TPP: 300 MW - Isalnita TPP: 315 MW Rom?7 - Govora TPP: 100 MW Srb1 - Nikola Tesla A, B TPP: 3036 MW Srb2 - Kolubara A TPP: 239 MW Srb3 - Kostolac ...Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac. "Projection of SO2 emissions in coal power plants in Serbia" in 9th International Conference Mining and environmental protection, Sokobanja 24-27th May 2023., Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
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Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia
Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...... Monastery —-g.5. at Svilajnac • 180 . 160 s s o : z a : o g 10 P Ž ž Š w š š k i 33 Š o |}] E 40 || > o LJ 2808 888 8#8.8#8.4. 8 + žž BII II I I ŠGU 39 8B B ! Š Š 9 ž Š Š Š 3 'B B ! Š BI B R BO Cju.=<21”·(3320 d BB BSKSSBIBISB IBE —. at Manssin Mopasisty ——g:s. atvisjne ——>s at Manasija ...Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić. "Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia" in National Conference with International Participation “GEOSCIENCES 2022”, Sofia : Bulgarian geological society (2022)
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Smanjenje sleganja plitkih temelja primenom mikrošipova
Slobodan Ćorić, Dragoslav Rakić (2021)Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...Slobodan Ćorić, Dragoslav Rakić. "Smanjenje sleganja plitkih temelja primenom mikrošipova" in Zbornik radova međunarodno naučno-stručnog savetovanja Zemljotresno inženjerstvo i geotehnički aspekti građevinarstva, Vrnjačka banja, 3-5. novembar 2021., Beograd : Savez građevinskih inženjera Srbije (2021)
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Nonequilibrium athermal random-field Ising model on hexagonal lattices
Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević. "Nonequilibrium athermal random-field Ising model on hexagonal lattices" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.032147
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Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2
Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...... complexes.17 They usually interact with nucleic acids, but there are some data implying also their interaction with cellular proteins.18–21 Several Ru(II) drugs have reached the level of clinical investigations (NAMI-A and KP1019).22,23 In particular platinum(IV) and ruthenium(III) complexes containing ...
... MALDI-TOF mass spectra were acquired on a Voyager Biospectrometry DE ProWorkstation (PerSeptive Biosystems, Framingham, MA, USA) and an Autoflex II (Bruker Daltonics, Leipzig, Germany) MALDI-TOF mass spectrometer, both equipped with a pulsed nitrogen laser (337 nm). For the m/z ranges 10 000–15 ...
... For the lower m/z ranges, no low mass gate was set and all mass spectra were obtained using the reflector mode. The spectra recorded using Autoflex II were calibrated externally using a standard calibrant mixture (Protein Calibration Standard I; Bruker Daltonics), while the data files were transferred ...Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković. "Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2" in Metallomics, Oxford University Press (OUP) (2011). https://doi.org/10.1039/c1mt00088h
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Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic
Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...... of reservoir, well and fluid (depth, pressure, production, and technical limitations of artificial lift methods) Energies 2020, 13, 1758 4 of 15 II. Conditions in which the well operates (location, availability of energy, training of people, etc.) III. Economic factors (capital costs, operating ...
... technical limitations of artificial lift methods. The expert reviews all the parameters and decides which is the best method [6,8,10,15]. The second group (II) is expert systems: these are programs that analyze all parameters, both technical and economic, and in the output give the best artificial lift method ...
... suitable artificial lift method [11–14]. The analysis of the mathematical and conceptual models indicates that: • there are several input parameters (I, II, III); • for the first and third groups, parameters are measurable and can be displayed numerically; • In the second group, parameters are from different ...Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković. "Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic" in Energies, MDPI AG (2020)
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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance
Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography... in the study area derive GEOLOGICA CARPATHICA, 2017, 68, 4, 350—365 352 GAWLICK, DJERIĆ, MISSONI, BRAGIN, LEIN, SUDAR and JOVANOVIĆ a Beograd ii P | WC = Westem Carpathians NCA = Northem Calcareous Alps N .ceanoorust Adriatic carbonate iPaddic Oobioli E platform and equivalents DOB = Dinaridic ...
... mćlange (Bajocian - Oxfordian) — — metamorphic sole đ?m (Bathonian - Oxfordian) (Žlate Early Jurassic - Oxfordian) Middle - Late Jurassic future DOB ii plagiogranites' O formation of SSZ + + i + ophiolites + + B oceanic crusUoophiolites position of the study area c Callovian/Early Oxfordian ...
... C. & Ogata K. 2010b: Peri-Adriatic mćlanges and thcir evolution in the Tethyan realm. In: Dilek Y. (Ed.): Eastern Mediterrancan geodynamics (Part II). /nt. Geo/l. Rev. 52, 4-6, 369—406. Festa A., Ogata K., Pini G.A., Dilek Y. & Alonso J.L. 2016: Origin and significance of olistostromes in the ...Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović. "Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance" in Geologica Carpathica (2017)
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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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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016-01-13)U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže... RUDARSKO-GEOLOŠKI FAKULTET 198 Ulaz K Cu Otok II Prečišćavanje Ulaz Izlaz Domeljavanje i klasiranje Ulaz K Cu Otok III Prečišćavanje Ulaz K Cu Otok I Prečišćavanje Ulaz OK Cu Otok Osnovno flotiranje PID+-PID+- PID+- PID+- PID + - Ulaz K Cu Otok Dopunsko flotiranje Fazi logički ...
... Otok I Prečišćavanje Ulaz OK Cu Otok Osnovno flotiranje PID+-PID+- PID+- PID+- PID + - Ulaz K Cu Otok Dopunsko flotiranje K/Cu Ulaz K Cu Otok II Prečišćavanje Jalovina Validacija modela CCU, TCU, RCU Reference Plant Output Neural Network Controller Control Signal ANN kontroler ...
... Engineering 66–68, pp. 77–83 215. Oproiu, G., Lacatusu, I., Stoica, L., 2009. Examination of Kinetic Flotation Process for Two Experimental Cu(II) and Ni(II) – α-benzoinoxime Systems, Based on Kinetic Literature Models, Chemistry Magazine (Revista de Chimie), Vol. 60 (6), pp. 641-645 216. Osorio ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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Osnovi hidrogeologije
Petar Dokmanović (2021)... podelio rastresite i slabovezane stene na tri grupe (Vuković i Soro 1991): 1/ jednorodnog sastava, ako je cu<5; 2/ umereno jednorodnog sastava, ako je 5<cu<15 i 3/ nejednorodnog sastava, ako je cu>15. Jedna od, u domaćoj praksi, korišćenih klasifikacija stena, na osnovu granulometrijskog sastava, ...
... Kvantitativno, (ne)jednorodnost se iskazuje preko koeficijenta jednorodnosti/uniformnosti (cu): 10 60 u d d c = (6.3.1.1) Slika 6.3.2.2. Integralna kriva granulometrijskog sastava [20] Što je cu veći, to je stena raznorodnijeg (nejednorodnijeg) sastava. Na osnovu veličine ovog k ...
... porekla. Obrazložene su suštinske razlike između (hemijski i fizički) vezanih i slobodnih (gravitacionih) podzemnih voda. II DEO: KRUŽENJE I BILANS VODA NA ZEMLJI Cilj II DELA je upoznavanje sa mehanizmima kruženja vode u prirodi i osnovnim komponentama koje čine taj proces, kao i osnovnim načelima ...Petar Dokmanović. Osnovi hidrogeologije, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021
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Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije
Branko M. Petrović (2016-07-12)Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija... 𝐷𝑟𝑡 (3.9) 0.4D 0.5D s ϕ D 6 αB αF Sx 3 2 1 4 5 z B 47 H hI II hI I hg hI V hd r hV hI V hI II hI I βè hr d hr IV hr III hr II hr g Slika 3.11. - Šema za određivanje visine rezova Broj rezova po visini bloka (ceo broj), može se dobiti ...
... Diskusija i zaključak. 5 PROGRAM ISTRAŽIVANJA I F A Z A S IS T E M S K A A N A LI Z A II F A Z A M O D E LI R A N JE III F A Z A O P T IM IZ A C IJ A Proces IzlazUlaz Analiza sistema ROTORNI BAGER Analiza sistema RADNA ...
... tocka tmax (m) Stepen punjenja kofice (%) efikasnost (ηblock) Visina bloka (m) Sirina bloka (m) Duzina bloka(m) Qeff = Qth x ηblock [m³/h] II. Istrazivanja u okviru selektivnog otkopavanja „Efikasnost RB – Glavni uticajni faktori“ Fol. 17 Slika 2.3. – Uticajni faktori na efikasnost rada ...Branko M. Petrović. "Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... H-HadCM, and N-NCAR) Sowing - Anthesis Sowing - Maturity 2050 2050 Loc. | AIB A2 AIB A2 E H N E H N E H N E H N CU |-7 -9 -8 -7 || -7 -7 -8 -9 -6 -9 -6 DM | -II -13 -9 -13 6 |-II -11 -14 -10 -13 -I6 |-12 KR | -8 -12 -7 -10 4 |-IO | -8 -11 -7 -9 -I2 |-I0 KU |-9 -12 -10 -9 4 |-I2 -10 -12 -10 ...
... 1.91 mg/kg for Cu and 2 mg/kg for Zn; 3) for raisins, seeded (food item: 09299): 3.018 mg/kg for Cu and 1.8 mg/kg for Zn; and 4) for blackberries, canned, heavy syrup, solids and liquids (food item: 09046): 1.33 mg/kg for Cu and 1.8 mg/kg for Zn. It is clear that all fruit Cu and Zn contents ...
... metallogenic zone of the Carpatho-Balkan metallogenic province (porphyry Cu and related high sulphidation Cu-Au massive sulphide deposits), 2) the Lajkovaca ore district (Cyprus type of hydrothermal volcano- sedimentary Cu-Au massive sulphide deposits) and in 3) the Lece ore district. All mineral ...Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... Beogradu. Njena istraživanja su vezana za područja inteligentnih sistema, informacionih sistema i baza podataka. ii Kako koristiti elektronsku knjigu Sadržaj knjige I Autori II III IV V Recenzenti Izdavač Katalogizacija About the book Ivan M. Obradović je diplomirao 1974. godine na grupi ...
... analizu ventilacije rudnika 8 Kako koristiti elektronsku knjigu? Sadržaj knjige UML notacija Index About the book 1 2 4 6 3 51 2 4 3 I II II I Slika 4.3 Matrica poligona B za mrežu prikazanu na sl. 4.3, saglasno izabranom stablu mreže, ima sledeći oblik: −= ...
... VENTILACIJE RUDNIKA Onima što ”idu skačući po gorama preskačući brežuljke”. i Kako koristiti elektronsku knjigu Sadržaj knjige I Autori II III IV V Recenzenti Izdavač Katalogizacija About the book Autori Nikola M. Lilić je diplomirao 1982. godine na Rudarsko-geološkom fakultetu ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000
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EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School
Prva škola za obuku polaznika koju je organizovala COST akcija NexusLinguarum održana je od 8. do 12. februara 2021. godine sa ciljem da studenti, istraživači i stručnjaci nauče osnove lingvističke nauke o podacima. Tokom obuke polaznici su se upoznali sa širokim spektrom tema: od semantičkog veba, RDF -a i ontologija, do modeliranja i pretraživanja jezičkih podataka pomoću najsavremenijih ontoloških modela i alata. Škola je održana u okviru serije letnjih škola EUROLAN-a i organizovalo ju je virtuelno (onlajn) nekoliko instituta; ...nauka o lingvističkim podacima, povezani podaci u lingvistici, jezički podaci, EUROLAN, NexusLinguarum, COST akcija, škola za obuku... culture, traditions and nature. The fifth day comprised three parallel sessions on different topics: (i.) LLD Generation/Transformation and Linking, (ii.) Annotations (NIF, Web Annotation) (Hellmann et al. 2013), and (iii.) OntoLex extensions: vartrans for representing translations and term variants ...Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković. "EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.7
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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 ...... = 1 to n: Ri = (µR(1), . . . ,µR( j), . . . ,µR(n)); Mi = (µM(1), . . . ,µM( j), . . . ,µM(n)); Si = (µS(1), . . . ,µS( j), . . . ,µS(n)). (9) (ii) The membership functions can form C= n3 combinations among themselves. Each combination Ac represents practically one possible assessment Ai(8). Ac ...
... membership function p and class j = 1 to n: R; = (UR(1), ++ UR(j)s +++ LR(n))i Mi = (Ha(ays «++ MMi) +7 Haan) ” Si = (Us(ajy «+7 Hs(j)r «+7 H8(n))- y (ii) The membership functions can form C = n° combinations among themselves. Each combination Ac represents practically one possible assessment Aj(8). Ac ...
... according to the algorithm, Section 2.2.1: (i) Input data are of fuzzy relationship: {urg7-N, UmB1-N, and [sp1-n (9). Energies 2019, 12, 4044 13 of 18 (ii) In this case, it is possible to form: C = 103 = 1000 combinations. The combinations carry the code mark in the general record: jR-jM-jS, for j = 1 ...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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Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova
Zoran M. Štirbanović (2015-07-01)Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina... n METHods for Enrichment Evaluation). PROMETHEE I daje parcijalni, II potpuni a III intervalni poredak alternativa, dok tip IV predstavlja proširenje PROMETHEE III za neprekidne skupove. Ovde se prikazuje metoda PROMETHEE II [8,12]. Metoda PROMETHEE uvodi funkciju preferencije P (a , b ) za ...
... čvorovi. Rezultantni graf se određuje prema uslovima „saglasnosti“ i „nesaglasnosti“ [8,11]. Ista škola, (METRA iz Pariza) razvila je metodu ELECTRE II, koja se takođe bazira na uređenju relacijom preferencije. Ovde se ukratko daje matematička formulacija ove Zoran Štirbanović, DOKTORSKA DISERTACIJA: ...
... Autori metode PROMETHEE [2] predlažu šest tipova funkcije preferencije I „Jednostavan“ kriterijum > ≤ = 0јеако,1 0јеако,0 ),( d d baP II Kvazi-kriterijum > ≤ = qd qd baP јеако,1 јеако,0 ),( III Kriterijum sa linearnom preferencijom > ≤< ≤ = pd pdpd d baP ...Zoran M. Štirbanović. "Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-01)