Претрага

Упит dcterms_subject_txt:Mining machinery

114 items

  • 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

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... cs are excavation speed and slewing speed. The class Oprema is used for modeling all types of specific equipment (excavation machinery, conveying and auxiliary machinery, pumps etc.). Data on exploitation areas, open pit or work bench are modeled by the class Područje. The open pit, that is, the ...
    ... describe how RudOnto, a terminological resource for mining engineering developed at the University of Belgrade Faculty of Mining and Geology, can be used for generating a mining equipment ontology. RudOnto is an integral part of a specialized mining engineering information system, which features ...
    ... ontology language OWL. Keywords: mining equipment, terminological resources, onotologies, OWL, mining thesaurus 1. INTRODUCTION The use of information technology (IT) is today indispensable in almost all mining engineering areas, including mining equipment management and maintenance ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... life of the mining machinery: models with limited interval, Journal of Mining Science, 2010. 34. Vujić S., Miljanović I., Maksimović S., Milutinović A., Benović T., Hudej M., Dimitrijević B., Čebašek V., Gajić G.: Optimal dynamic management of exploitation life of the mining machinery: models with ...
    ... JOSIPOVIĆ PEJOVIĆ M., DIMITRIJEVIĆ B., GAJIĆ G., ČEBAŠEK V., 2010: Optimal dynamic management of exploitation life of the mining machinery: models with limited duration. Journal of Mining Science, Vol. 46, No. 5, September-October 2010, 554–560. VUJIĆ S., ČEBAŠEK V., GAJIĆ G., GOJKOVIĆ N., MILJANOVIĆ ...
    ... JOSIPOVIĆ PEJOVIĆ M., DIMITRIJEVIĆ B., GAJIĆ G., ČEBAŠEK V., 2010: Optimal Dynamic Management of Exploitation Life of the Mining Machinery: Models With Limited Duration. Journal of Mining Science, Vol. 46, No. 5, September- October 2010, 554–560. 4. СПИСАК ИЗАБРАНИХ НАУЧНИХ И СТРУЧНИХ РАДОВА НАСТАВНИКА ...

  • An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System

    Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović (2006)
    In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...
    ... production monitoring (excavating-loading equipment, transport equipment, equipment for drilling- blasting works, coal preparation equipment, auxiliary machinery and equipment, electric energy installations, dumps, locations where data have been taken from, shifts, etc.). Respective jobs and operations ...
    ... registered, as well as realized efficiency of the equipment, realized wages, workers involvement, data on production standstills, equipment and machinery failures, information about all types of operative events that influence production, drilling-blasting works, condition of equipment and facilities ...
    ... related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management in mining to apply novel management technologies which are already being used with success ...

  • Experimental determination of best performing cut in Lece underground mine

    Slavko Torbica, Miodrag Duranović, Nenad Gramić, Veljko Lapčević, Miloš Čolović (2020)
    blasting, explosives, underground mining

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... as computer languages e.g. Java, C#, C++, etc. [2] Interest in NLP began in 1950 when Alan Turing published his paper entitled “Computing Machinery and intelligence,” [4] but in the past ten years saw a rapid and substantial growth in the commercialization of NLP. We believe that NLP is ...
    ... L., Computational Linguistics, in The Stanford Encyclopedia of Philosophy, E.N. Zalta, Editor. 2015, Springer. [4] Turing, A., I.—Computing machinery and intelligence. Mind, 1950. LIX(236): p. 433-460. [5] White Paper Series, H. Uszkoreit and G. Rehm, Editors. 2012, Springer: Berlin Heidelberg ...
    ... Faculty of Mining and Geology, biljana.lazic@rgf.bg.ac.rs RANKA STANKOVIĆ University of Belgrade, Faculty of Mining and Geology, ranka.stankovic@rgf.bg.ac.rs GIOVANNI SCHIUMA University of Basilicata, schiuma@arts4business.org MILADIN KOTORČEVIĆ University of Belgrade, Faculty of Mining and Geology ...

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Stability analysis on slope PK dacite Ceramide

    Vladimir Čebašek, Veljko Rupar, Vladimir Ivoš, Vladimir Petković (2018)
    Safe surface mining exploitation of minerals is possibile only if stable bench and overall slopes in the open pit are construct. In order to to construct stable open pit slopes, it is necessary to carry out certain physical and mechanical laboratry testing of mineral raw materials in order to determine the geomechnical calculating parameters. These calculating parameters represent the base ground for performing slopes analyses and the open pit design. In this paper, an stability analysis of benches and ...
    dacite, slope stability, surface mining

  • 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 ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... 2016, 18, 142–150. [CrossRef] 19. Tanasijevic, M. A fuzzy-based decision support model for evaluation of mining machinery. In Proceedings of the 48th International October Conference on Mining and Metallurgy, Bor, Serbia, 28 September–1 October 2016; pp. 15–18. 20. Ivezic, D.; Tanasijevic, M.; Jovancic ...
    ... in asset management in the sense of machine comparison and weak point analysis [18]. The model will be illustrated with the example of auxiliary machinery working in EPS (Electric Power Industry of Serbia) mines. The model will be verified by using the common ways to determine availability. 2. Materials ...
    ... that the open-pit mine has enough machines and that they are available for operation. The direct interdependence of the efficiency of the auxiliary machinery and the operation of the basic mechanization (bucket-wheel excavators, belt conveyors, and spreaders) has been demonstrated. In case of low availability ...

  • Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije

    Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović (2024)
    Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...
    obrazovanje, rudarstvo, geologija
    ... education system in the field of mining and geology in the Republic of Serbia. Given that mining and mineral resources are of vital importance to society, active participation from experts in the field is essential. Professionals, in addition to knowledge in mining and geology, often need to possess ...
    ... situation in secondary and higher education in the fields of mining and geology. Furthermore, it outlines various measures that must be implemented through educational system reforms to improve and enhance the situation. Keywords: education, mining, geology 1. Uvod Polazni preduslov za Jednake mogućnosti ...
    ... у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr ...

  • Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support

    Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović (2017)

  • Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia

    Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović (2019)
    Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...
    Groundwater, Raw materials, Lithium, Mining, Field hydrogeology

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    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 kriterijuma

  • 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

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... Assessment Elements Criteria for Environmental Aspect Evaluation R (I) PO Q IS 1 Presence of dust on mining slopes 5 2 1 + 1 + 1 + 1 + 0 + 1 50 2 Exhaust and dust emission during the operation of mining machinery 5 2 1 + 1 + 0 + 1 + 0 + 1 40 3 Dust dispersal into the surrounding soil 5 2 1 + 0 + 0 + 1 + 0 + ...
    ... l Protection Aspects in Mining and Energy Complex Key issues Proposal of environmental aspects Mark Coal exploitation The presence of dust in the pits and slopes A1 Emissions of exhaust gases and dust during the operation of mining machines Discharge of waste mining and process waters U ...
    ... Environmental Protection Aspects in Mining and Energy Complex Key issues Proposal of environmental aspects Mark Coal exploitation The presence of dust in the pits and slopes A1Emissions of exhaust gases and dust during the operation of mining machines Discharge of waste mining and process waters Unfavorable ...

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... skipped and only determin- ers in its default form, which is listed on the advanced mining tab, will be found and processed. The mere extraction involves loading selected terms and their values from advanced mining tab in two arrays, and then then processing them. Each of the elements of the first array ...
    ... у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr ...
    ... Finally, it presents a software tool that tests the new database and gives some examples of the analysis of the ob- tained results. KEYWORDS: data mining, information extraction, emotions, text on the web. PAPER SUBMITTED: 24 January 2017 PAPER ACCEPTED: 25 March 2017 Mihailo Škorić miks@tesla.rcub ...

  • Digitalizacija u rudarstvu: Kreiranje sistema za efikasno poslovno izveštavanje

    Stevan Đenadić, Aleksandar Mirković, Veljko Rupar (2024)
    Proces donošenja odluka u oblasti rudarstva i geologije uslovljen je blagovremenim posedovanjem kvalitetnih podataka i informacija. Kompleksnost rudarskih procesa nalaže prikupljanje podataka na dnevnom odnosno na smenskom nivou. Podaci kao takvi bez analitičkog pristupa nisu dovoljni. Kako bi pristup podacima bio brz i efikasan neophodno je posedovanje adekvatnog digitalnog rešenja uz adekvatne centralizovane baze podataka. U ovom radu je dat pregled trenutne pozicije rudarstva sa aspekta digitalne transformacije kao i predlog jednostavnog prototipa u obliku digitalnog sistema za poslovno ...
    rudarstvo, digitalna transformacija, baze podataka
    ... digitalna transformacija, baze podataka. Abstract The decision-making process in the field of mining and geology is conditioned by timely access to quality data and information. The complexity of mining processes requires data collection on a daily or shift basis. Data, as such, without an analytical ...
    ... paper provides an overview of the current position of mining from the perspective of digital transformation, as well as a proposal for a simple prototype in the form of a digital system for business reporting and analytics. Keywords: mining, digital transformation, databases. 1. Uvod Rudarstvo ...
    ... Ganerwalla, A. & Harnathka, S. (2021). Racing Toward a Digital Future in Metals and Mining. Boston Consulting Group. available on: https://www.bcg.com/publications/2021/adopting-a-digital-strategy-in- the-metals-and-mining-industry [4] Stolterman, E. & Fors, A.C. (2004). Information technology and the ...