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Упит dcterms_subject_txt:neural networks

116 items

  • Different aspects of soft computing methods application for blasting in mining

    Katarina Urošević, Jelena Zakonović, Radmila Gaćina (2019)
    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, ...
    soft computing, blasting, fuzzy logic, neural networks

  • Modelling of environmental data using artificial neural networks

    Elena Klarići (1995)

  • 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
    ... ventilation networks with the help of SimVent. Among these possibilities the following should be stressed: • determining air flow distribution throughout the ventilation network, • simulation of climate conditions in mine chambers, • modeling of fire incidence in ventilation networks as well as ...
    ... composed of three program modules: a software package for aerodynamic definition of mine ventilation networks - ResNet, a software package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for the analysis of ventilation systems - VENTEX. Software ...
    ... using a hybrid system composed of three entities: a package for aerodynamic definition of mine ventilation networks - ResNet, a package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for ventilation system analysis - VENTEX. Besides the architecture ...

  • 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 ...
    ... ventilation networks with the help of SimVent. Among these possibilities the following should be stressed: • determining air flow distribution throughout the ventilation network, • simulation of climate conditions in mine chambers, • modeling of fire incidence in ventilation networks as well as ...
    ... composed of three program modules: a software package for aerodynamic definition of mine ventilation networks - ResNet, a software package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for the analysis of ventilation systems - VENTEX. Software ...
    ... using a hybrid system composed of three entities: a package for aerodynamic definition of mine ventilation networks - ResNet, a package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for ventilation system analysis - VENTEX. Besides the architecture ...

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... expert systems, neural networks and genetic algorithms in order to solve some complex problems in the area of mining engineering. In the realization of these systems we have used existing software: the Kappa-PC expert system shell, and the dynamic libraries for neural networks (NeuroWindows) and ...
    ... of artificial intelligence 1. Introduction AI methods and techniques, such as experts systems, case-base reasoning, machine learning, neural networks or genetic algorithms have successfully been used for solving certain types of problems in a wide area of applications. However, each of these ...
    ... consists of three program modules: a software package for aerodynamic definition of mine ventilation networks - ResNet, a software package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for the analysis of ventilation systems - VENTEX. ResNet ...

  • Sprega neuronskih mreža i numeričkih modela zadefinisanje sigurnih rastojanja kod razletanja komada pri miniranju

    Saša S. Stojadinović (2013-09-16)
    Doktorska disertacija sa navedenim naslovom prezentuje rezultate istraživanjaproblema razletanja komada pri miniranjima. Cilj istraživanja bio je kreiranje opšteg iuniverzalno primenljivog modela za prognozu maksimalnih dometa razletelih komada idefinisanje sigurnih rastojanja. Kombinacijomterenskih istraživanja, numerikogmodeliranja balistikih trajektorija razletelih komada i adaptivne prirode neuronskihmreža definisan je koncept neuro-numerike sprege. Sprega je objedinila univerzalnuprimenljivost numerikog modela i sposobnost prilagoavanja neuronskih mrežalokalnim uslovima u opšti model za prognozu maksimalnih dometa razletelih komada.Za potrebe sprege, a kao integralni deo disertacije, razvijen je metod za odreivanjekoeficijenta ...
    Razletanje, miniranje, domet, sigurna rastojanja, numeriki modeli,neuronske mreže, sprega, verifikacija

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    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 ...
    ... its components: • ResNet, the software package for aerodynamic definition of mine ventilation networks, • SimVent, the software package for ventilation simulation in complex mine venti- lation networks, and M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m ...
    ... using a hybrid system composed of three entities: a package for aerodynamic definition of mine ventilation networks — ResNet, a package for ventilation simulation in complex mine ventilation networks — SimVent and a diagnostic expert system for ventilation system analysis — VENTEX. M in . R es . E ...
    ... entire ventilation system have been analyzed and checked in detail, INVENTS offers a number of possibil- ities for the analysis of mine ventilation networks with the help of its ventilation simulation component SimVent. Among these possibilities, the most important are the following: • determining air ...

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Part of Speech Tagging for Serbian language using Natural Language Toolkit

    Ranka Stanković, Boro Milovanović (2020)
    Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...
    obrada prirodnog jezika, mašinsko učenje, neuronske mreže
    ... research is achieved with the Perceptron tagger, a neural network which is more than a decade old. Since then, a breakthrough with deep learning has happened, so there’s a strong belief that further improvements can be made with the latest neural network models [24]. However, there is a doubt if ...
    ... with the Perceptron tagger: 92,52 – 95,76% accuracy for the different tagsets. Index Terms—Natural Language Processing; Machine Learning; Neural Network. I. INTRODUCTION In the last couple of years, a big advancement in the field of Natural Language Processing has occurred. There are ...
    ... subpackages. CRF tagger is based on Conditional Random Fields [18]. HMM tagger is based on Hidden Markov Models [19]. Training on an averaged, one- layer neural network produces Perceptron tagger [20]. TnT tagger is short of Trigrams'n'Tags and it uses a second order Markov model to produce tags for an input ...

  • Cyanobacterial diversity and toxicity of biocrusts from the Caspian Lowland loess deposits, North Iran

    Tamara Dulić, Jussi Meriluoto, Tamara Palanački Malešević, Violeta Gajić, Tamara Važić, Nada Tokodi, Igor Obreht, Bojan Kostić, Petar Kosijer, Farhad Khormali, Zorica Svirčev (2016)
    Biocrusts and adjacent sediments were collected from the so-called loess plateau of Northern Iran and the loess deposits on the foothills of Alborz Mountains. The mineralogical and granulometric analyses characterized sediments as quartz-rich clayey or sandy silts. Cyanobacterial diversity, colony morphology and grain stabilization were studied by light and scanning electron microscopy, which showed glue-like layers of cyanobacterial EPS and dense networks of filamentous cyanobacteria immobilizing finer and bigger grains, respectively. Amorphous, tuft and globular cyanobacterial colony structures were also detected. 15 cyanobacterial genera were ...
    Biokore, Cijanobakterije, Diverzitet, Cijanotoksini, Stabilizacija sedimenata, Les

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... their business partners’ networks both within the country and abroad. Thus ICT support is aimed not only at improving intra-business processes, but also at inter-enterprise business processes, in order to secure better performance and interoperability in business networks [11]. The concepts of ...
    ... related terminological resources developed to secure interoperability between ICT components within our BI system, but also within larger business networks. The section that follows is dedicated to the main results of our study, namely our approach to development of a BI system for mine safety management ...
    ... and reusable knowledge assets are essential for knowledge management and business intelligence within mining industry enterprises and enterprise networks. In addition to providing intra-business interoperability RudOnto thus secures inter- enterprise interoperability by offering a unique knowledge ...

  • Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

    Jelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić (2011)
    A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and ...
    комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својства

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... 36,000 lemmas are simple proper names. The corresponding DELAF dictionary consists of app. 1,260,000 entries [7]. 2.3 Semantic Networks - Wordnet Semantic networks, seen as one important node in the hierarchy of ontologies, are used more and more in various phases of the automatic analysis of ...
    ... Serbian čamac and barka the near hyponym лодка is used. This is not an unexpected result; it only proves that searching with the help of semantic networks, on web for instance, can be useful, which is the ultimate goal of our experiments. Figure 9. Prolex based semantic expansions When search ...
    ... 2008), pp. 145-152, Dubrovnik, Croatia, September 25-28, 2008. [22] P. Vossen (ed.) EuroWordNet: A Multilingual Database with Lexical Semantic Networks. Dordrecht: Kluwer Academic Publishers, 1998. ...

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... their business partners’ networks both within the country and abroad. Thus ICT support is needed not only within intra-business processes, but also within inter- enterprise business processes, in order to secure better performance and interoperability in business networks (Albani & Dietz, 2006). ...
    ... and reusable knowledge assets are essential for knowledge management and business intelligence within mining industry enterprises and enterprise networks. In addition to providing intra-business interoperability RudOnto also secures this inter-enterprise interoperability by offering a unique ...

  • 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 ...
    naftna bušotina, gubitak isplake, fuzzy logika, ANFIS model

  • Analysis and Calculation of MMRS and Primary Gas Distribution Network in Urban Environment – Case Study Kučevo

    Aleksandar Madžarević, Pavle Janković (2022)
    Oblast primene prirodnog gasa je veoma široka. Kao energent može se koristiti za proizvodnju energije u elektranama, toplanama i postrojenjima za kombinovanu proizvodnju energije ili za zadovoljavanje različitih toplotnih potreba u industriji i širokoj potrošnji. Gas se može upotrebiti i kao sirovina u hemijskoj i petrohemijskoj industriji, a tokom poslednjih decenija nalazi primenu i u saobraćaju kao pogonsko gorivo u SUS motorima. Sa ekološkog stanovišta, prirodni gas predstavlja najprihvatljiviji izvor energije u poređenju sa drugim fosilnim gorivima. Pri sagorevanju ...
    distribucija gasa, projektovanje gasovoda, analiza potrošnje