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Упит dcterms_subject_txt:Fuzzy logic

81 items

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    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 ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Развој алгоритма процене ефеката ризика рада рударских машина на бази фази алгебре

    Dejan V. Petrović (2014-12-30)
    Појава изненадних отказа елемената техничких система у рударству је свакодневна појава...
    ризик, поузданост, технички систем, рударске машине, отказ, фази скупови, фази логика

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... components of the system, which is the promise of a ‘‘white box’’ approach. Furthermore, this type of analysis of the inner components and the logic of the system can enable needed analyses leading to improvement of 'theoretical model' of the project [22]. 4. APPLICATION OF THE LOGICAL ...
    ... are, in sequence: a. identification of project objectives; b. identification of causal relationships existing within the project (the "project logic"): inputs, activities, outputs, specific objectives (results), global goals (impacts); c. identification of "conditions" or "assumptions and ...
    ... tputs, then step to the superior level to asses if the causality of outputs-assumptions-purpose is coherent, and so on. Figure 2: LFM's logic of analysis [24] The LFM has been used as formative Evaluation model in the development of the proposal of the project BAEKTEL (Blending Academic ...

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... of data on software was adopted for the software development analysis phase. The task of visual modeling of the system is to define the objects and logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment ...
    ... classes communicate with classes from the business service level by sending messages and thus initiating the execution of the application process logic. Figure 6 depicts main interface forms containing various controls that enable text search and editing, picture presentation, communication with data ...
    ... figure 7 an activity diagram depicts the dynamic model of the Simulation-Fire class that encompasses characteristic procedures in the execution of logic for the airflow calculation model in the conditions of fire incidence in complex mine ventilation networks. NetMain [određena distribucija protoka] ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... of data on software was adopted for the software development analysis phase. The task of visual modeling of the system is to define the objects and logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment ...
    ... classes communicate with classes from the business service level by sending messages and thus initiating the execution of the application process logic. Figure 6 depicts main interface forms containing various controls that enable text search and editing, picture presentation, communication with data ...
    ... figure 7 an activity diagram depicts the dynamic model of the Simulation-Fire class that encompasses characteristic procedures in the execution of logic for the airflow calculation model in the conditions of fire incidence in complex mine ventilation networks. NetMain [određena distribucija protoka] ...

  • Методологија интегралне анализе сценарија енергетског развоја

    Александар Маџаревић (2019)
    енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас
    ... energy portfolios under uncertainty: A multi-segment fuzzy goal programming approach, Renewable Energy, 2018, Volume 129, pp. 540-552 Klir, G., Fuzzy sets and fuzzy logic, Prentice Hall P T R , Neew Jersey, USA, 1997. Belohlavek, R., Fuzzy Relational Systems: Foundations and Principles, Kluwer ...
    ... Svrkota, I., Risk assessment model of mining equipment failure based on fuzzy logic, Expert Systems with Applications, 2014, Volume 41, pp. 8157–8164 Reveiz, A., Leon, C., Operational risk management using a fuzzy logic inference system, Borradores de Economia, 2009, Volume 574, pp. 1–30. Hocine ...
    ... Ivezic, D., Tanasijevic, M., Ignjatovic, D., Fuzzy approach to dependability performance evaluation, Quality and Reliability Engineering International, 2008, Volume 24(7), pp. 779–792. Zadeh, L.A., Fuzzy Logic = Computing with words, IEEE Transactions on Fuzzy Systems, Volume 4(2), 1996, pp. 103-111 ...

  • Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika

    Saša M. Jovanović (2016-05-16)
    Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...
    otkopavanje; otvaranje; mreže i grafovi; fuzzy skupovi; stohastičkiprocesi; indeks konveksnosti; sistemi podrške odlučivanju
    ... Stochastic Volatility Using Fuzzy Sets Theory, Northern Finance Association 2008 Conference Paper, http://www.northernfinance.org/2008/papers/182.pdf [2] Bellman, RE.; Zadeh, LA.: Local and fuzzy logics. In: Dunn JM, Epstein G (eds.) Modern uses of multiple-valued logic. Kluwer, Boston, pp.105–151 ...
    ... 105–151, pp.158–165 (1977) [3] Bojadziev, G.; Bojadziev, M.: Fuzzy sets and fuzzy logic applications, World Scientific, (1996). [4] Brazil ,M., Lee, D.H, Van Leuven, M., Rubinstein, J.H., Thomas, D.A., and Wormald, N.C.(2003). Optimising declines in underground mines, Mining technol Trans Instit ...
    ... multiple orebody deposit by using fuzzy TOPSIS method and network optimization, Expert Systems With Applications, Volume 37, Issue 2, (2010), pp. 1408-1418. [18] Goguen J. A., The logic of inexact concepts, Synthese, 1969, 19, pp. 325-373. [19] H. J. Zimmermann, Fuzzy set theory, Advanced review, ...

  • Primena fuzzy optimizacije u hidrodinamičkoj analizi

    Dragoljub Bajić, Dušan Polomčić, Jelena Ratković, Predrag Pajić (2018)
    znanje eksperta, optimizacija, trougaoni fuzzy brojevi, upravljanje podzemnim vodama, fuzzy logika, hidrodinamički model

  • 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, optimizacija

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... hierarchical data structures in the form of trees. The business logic of the system is implemented in four libraries, two of which are of a general type, and are used in other packages as well. One of them, OpsteKlase_Ver2 provides the business logic for handling RudOnto. Within the data layer, RudOnto is ...
    ... where the left hand side of the figure shows components used for implementing the application interface (user level), the middle shows the business logic, and the right hand side the data layer. 5 Figure 3. Component UML diagram of SUKU Three components form the basis of the user layer ...

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... presented in the previous section, we created a corpus of 25 primary and secondary school textbook covering the following domains: biology, history, logic, music, computer science, physics and design and technology (technological education). The biology domain is covered by seven textbooks: one for primary ...
    ... nal technical schools relating to the following subjects: power engineering, mechanical engineering for agriculture and tools and mechanization. Logic and philosophy, on the other hand were covered by two high school textbooks focusing on humanities subjects . The domain of music is represented by ...
    ... with various functions …) (20) partial 97 94 Бреза је брзорастућа врста чије се дрво (Birch is a fast-growing species whose tree) (4) history/ logic/ music full 10 10 Авари су номадско племе турског порекла. (The Avars are a nomadic tribe of Turkish origin.) (12) partial 55 34 Драма је врста ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Računarski integrisani sistemi za podršku odlučivanju i upravljanju u PMS, zasnovani na fuzzy logici

    Igor Miljanović (2007)
    Računarski integrisani sistemi, odlučivanje, upravljanje, PMS, fuzzy logika.

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... synthesis with a fuzzy logic controller, International Journal of Man-Machine Studies, 7(1), 1975, 1-13. 122. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part1, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 404-418. 123. Lee, C.-C., Fuzzy logic in control ...
    ... control systems: fuzzy logic controller - part2, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 419-435. 124. Bai Y., Zhuang, H., Wang, D., Fundamentals of Fuzzy Logic Control - Fuzzy Sets, Fuzzy Rules and Defuzzifications, Advanced Fuzzy Logic Technologies in Industrial Applications ...
    ... PREDICTION OF BLAST-INDUCED GROUND VIBRATIONS IN OPEN PIT MINES USING MONTE CARLO SIMULATION METHOD AND FUZZY LOGIC Abstract Modeling the prediction of blast-induced ground vibrations using fuzzy logic and Monte Carlo method is based on data obtained by field measurements of ground vibrations induced ...

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... synthesis with a fuzzy logic controller, International Journal of Man-Machine Studies, 7(1), 1975, 1-13. 122. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part1, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 404-418. 123. Lee, C.-C., Fuzzy logic in control ...
    ... control systems: fuzzy logic controller - part2, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 419-435. 124. Bai Y., Zhuang, H., Wang, D., Fundamentals of Fuzzy Logic Control - Fuzzy Sets, Fuzzy Rules and Defuzzifications, Advanced Fuzzy Logic Technologies in Industrial Applications ...
    ... PREDICTION OF BLAST-INDUCED GROUND VIBRATIONS IN OPEN PIT MINES USING MONTE CARLO SIMULATION METHOD AND FUZZY LOGIC Abstract Modeling the prediction of blast-induced ground vibrations using fuzzy logic and Monte Carlo method is based on data obtained by field measurements of ground vibrations induced ...

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... hyponym structure, taxonomies containing words and syn- onyms, conceptual models featuring complex knowledge all the way through to theories of logic with rich, complex, consistent and mean- ingful knowledge. Based on all of the above, it could be said that an ontology defines the words and concepts ...
    ... The terminology of the geological Survey of canada, originally developed independently of others (Struik, et. al., 2002) features a strict petro- logic classification of rock material together with the properties collected from different, primar- ily cartographic documents. This is how a simple search ...
    ... national geologic communities and academic institutions. As such, they provide both good resources of terms and guidelines for the development of geo- logic terminology. The above-mentioned publications made it clear that: • the terminology, in the geologic information system, cannot consist of a list ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... Office for Official Publications of the European Communities, Luxembourg. p. 53. doi: 10.2788/63147 ILANLOO, M. (2011): A comparative study of fuzzy logic approach for landslide sus- ceptibility mapping using GIS: An experience of Karaj dam basin in Iran.– Proce- dia, Social and Behavioral Sciences ...
    ... ANBAZHAGAN, S. (2015): Landslide susceptibility mapping along Kolli hills Ghat road section (India) using frequency ratio, relative effect and fuzzy logic models.– Environmental Earth Sciences, 73/12, 8009–8021. doi: 10.1007/ s12665-014-3954-6 RAPOLLA, A., DI NOCERA, S., MATANO, F., PAOLETTI, V. & ...
    ... HASHIM, M. & AHMAD, B.B. (2015): Remote sensing and GIS- based landslide susceptibility mapping using frequency ratio, logistic regression, and fuzzy logic methods at the central Zab basin, Iran.– Environmental Earth Sci- ences, 73/12, 8647–8668. doi: 10.1007/s12665-015-4028-0 SHAHABI, H. & HASHIM, ...

  • 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 ...
    mining technology, expert evaluation, triangular fuzzy numbers, multicriteria decision making

  • 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
    ... ten different flotation process models based on the following soft computing methods: fuzzy logic (Mamdani and Takagi-Sugeno fuzzy inference system), artificial neural networks and hybrid adaptive neuro-fuzzy inference system. Copper content in the feed, pulp pH value and collector dosage in the ...
    ... through the application of artificial neural networks then by using of fuzzy logic or hybrid adaptive neuro-fuzzy inference system. Furthermore, comparison between characteristics of models based on Mamdani and Takagi-Sugeno fuzzy inference systems was performed. The Takagi-Sugeno system was proven ...
    ... using fuzzy logic inference. Fuzzy Sets and Systems 125, pp. 121–133 37. Casali, A., Gonzalez, G., Agusto H., Vallebuona, G., 2002. Dynamic simulator of a rougher flotation circuit for a copper sulphide ore, Minerals Engineering 15, pp. 253–262 38. Castillo, O., Melin, P., 2008. Type 2 Fuzzy Logic: ...

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... calculated according to Figure 4, representing the intersection between a fuzzy observation of displacement O(t) and fuzzy time series consisting of A1, A2, . . . , Ai. Figure 4. Relationship between fuzzy observation and fuzzy time series. The calculation of the membership function value of intersection ...
    ... Modelling fuzzy time series with multiple observations. Int. J. Innov. Comput. Inf. Control 2012, 8, 7415–7426. 21. Chen, S.M. Forecasting enrolments based on fuzzy time series. Fuzzy Sets Syst. 1996, 81, 311–319. [CrossRef] 22. Liang, C.T.; Hsue, C.C.; Ching, C.Y. Using Extracted Fuzzy Rules Based ...
    ... a defined universe of clustering, we apply the concept of fuzzy time series. Such series, which were first proposed by Song and Chissom, ref. [17] are based on fuzzy set theory proposed by Zadeh [18,19]. The most important advantage of fuzzy time series approaches is to be able to work with a very small ...