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Упит dcterms_subject_txt:Human language technologies

345 items

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... down, as needed. Conclusion Human beings are often uncertain in assigning eva- luation scores by conventional methods, so decision making frequently involves uncertainties. FAHP can cope with that difficulty. The method has the ability to capture the vagueness of human thinking and effec- tively solve ...
    ... 11000 Belgrade, Serbia, e-mail: dupol2@gmail.com DOI: 10.2298/GABP1475103B defined as the variable whose permissible values are words of natural language, and not numbers. Apart from their symbolic linguistic form, linguistic vari- ables also have a quantified analytical form-member- ship function, ...
    ... linguistic variables suitable for qualitative-symbolic and quantitative-numerical cal- culations. A correlation is thereby established between the natural language used by man and the numerical data used by a computer. In recent years there has been a rapid increase in the number and types of applications of ...

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

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... safety management is to eradicate human anguish and suffering and to achieve economy of operation in an effective manner (Dhillon, 2003). The BI system for support of decision making in safety management uses a combination of various information technologies, such as OLTP (On Line Transactional ...
    ... discover week points within these procedures. The system consist of several software components representing a combination of different information technologies, where interoperability between diverse software components is secured by system of ontologies developed for mining engineering named RudOnto ...
    ... RudOnto also secures this inter-enterprise interoperability by offering a unique knowledge codification scheme, which enables software agents and human actors of different mining companies and related organizations to share knowledge assets and organizational data as a common resource. 3 ...

  • Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu

    Predrag Jovančić, Vesna Damnjanović, Dragan Ignjatović, Miloš Tanasijević, Stevan Đenadić (2019)
    Četvrtu industrijsku revoluciju – Industriju 4.0 karakteriše upotreba cyber-fizičkih sistema. Da bi se postigla optimalna strategija održavanja (ali i eksploatacije), neophodno je razviti sisteme koji podržavaju napredne inteligentne sisteme održavanja ili tehnologije pametnog održavanja. Iz toga su proizašli postulati Prediktivnog održavanja 4.0 (PdM 4.0) koji definišu veoma blisku budućnost u oblasti održavanja tehničkih sistema pa i rudarske opreme. PdM 4.0 uključuje iskorišćenje snage veštačke inteligencije za stvaranje stalnog uvida u otkrivanje uzroka i anomalija u radu opreme, koje se ...
    rudarstvo, prediktivno održavanje PdM 4.0, Industrija 4.0

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... of Mechanical Engineering) are gratefully acknowledged for assistance in TGA analysis. Živojin Smiljković, MSc in Chemistry, is acknowledged for language corrections. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection ...
    ... mm, 0.25 µm film thickness, carrier gas—helium with constant flow of 1.5 cm3/min), coupled to an Agilent 5975C Mass Selective Detector (Agilent Technologies, Santa Clara, CA, USA) (electron ionization energy of 70 eV). The following column temperature program was used: heating from 80 to 300 ◦C at a ...
    ... compounds for calculating molecular parameters was performed by integrating peak areas using the ChemStation Enhanced Data Analysis Software (Agilent Technologies). The mentioned analyses were performed at the University of Belgrade, Faculty of Chemistry. 2.6. Specific Carbon Isotope Analysis of Individual ...

  • Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji

    Petar Marković, Dejan Stevanović, Mirjana Banković, Vuk Lazić (2024)
    Sektor rudarstva i metalurgije se globalno suočava sa brzo evoluirajućim okruženjem u 2024. godini, koje karakteriše jedinstvena međusobna zavisnost rizika i prilika. Sektor je u središtu globalne energetske tranzicije, uz rastuću potražnju za kritičnim mineralnim sirovinama poput litijuma, nikla i bakra, koji su od suštinskog značaja za tehnologije obnovljive energije i električna vozila. Međutim, ova sve veća odgovornost donosi brojne izazove, uključujući pojačanu pažnju na ekološke, društvene i upravljačke (ESG) faktore, fizičke i tranzicione rizike uzrokovane klimatskim promenama, i ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... management is to eradicate human anguish and suffering and to achieve economy of operation in an effective manner [13]. The BI system for support of decision making in safety management described in this paper uses a combination of various information technologies, such as OLTP (On Line Tra ...
    ... bg.ac.rs 13th ISCSM 2016 BELGRADE 2 system consists of several software components representing a combination of different information technologies, where interoperability between diverse software components is secured by a system of ontologies developed for mining engineering named RudOnto ...
    ... y RudOnto thus secures inter- enterprise interoperability by offering a unique knowledge codification scheme, which enables software agents and human actors of different mining companies and related organizations to share knowledge assets and organizational data as a common resource. 3. Online ...

  • Energetska bezbednost sektora prirodnog gasa Srbije

    Aleksandar Madžarević, Predrag Jovančić, Miroslav Crnogorac (2023)
    U prve dve decenije 21. veka obezbeđivanje sigurnosti snabdevanja prirodnim gasom domaćeg tržišta bio je jedan od prioriteta razvoja energetike Srbije. Istovremeno, aspekt sigurnog snabdevanja bio je neizostavni deo slagalice stvaranja energetske bezbednosti. Izražena uvozna zavisnost je dominantna karakteristika sektora prirodnog gasa, tačnije, Republika Srbija je snažno zavisna od ruskog gasa, sa više od 80% uvezenih količina gasa, a do pre dve godine snabdevala se isključivo kroz jednu interkonekciju. U radu se razmatra aktuelna situacija u sektoru prirodnog ...
    N-1, IDUPS, energetska bezbednost, sigurnost snabdevanja
    ... madzarevicOrgf.bg.ac.rs (corresponding author only) predrag.jovancicO'rgf.bg.ac.rs miroslav.crnogorac(orgf.bg.ac.rs Conference topic Process technologies MG Energy Security of Serbian Natural Gas Sector Keywords (max. 5 words) Abstract In the first tvo decades of the 21st century, ensuring ...

  • Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji

    Ljiljana R. Kolonja (2016-09-23)
    Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...
    rudarstvo, bezbednost i zdravlje na radu, poslovna inteligencija,tehnička zaštita, ontologije
    ... Analitical Processing ‐ Analitička obrada podataka v OLTP ‐ On Line Transactional Processing – Transakciona obrada podataka OWL ‐ Web Ontology Language (OWL, 2013) ‐ Jezik za opisivanje ontologija i semantički veb PaaS ‐ Cloud Platform as a Service ‐Platforma kao usluga RDF ‐ Resource Description ...
    ... razvoja softvera SaaS ‐ Software as a Service ‐ Softver kao usluga SPAS –Sistem za podršku u analiziranju stanja sigurnosti rada SQL‐ Structured Query Language ‐ Relacioni upitni jezik SUMO ‐ Suggested Upper Merged Ontology ‐ Spajanje više javno dostupnih ontologija višeg nivoa SUO ‐ Standard Upper Ontology ...
    ... indexc ‐ Ponderisani sigurnosni indeks opasnosti TBX ‐ TermBase eXchange system – Sistem za razmenu terminoloških podataka UML – Unified Modeling Language – Objedinjeni jezik za modelovanje ZNR – Zaštita na radu vi SPISAK SLIKA Slika 2.1. Ukupan broj povreda sa smrtnim ishodom u rudnicima uglja ...

  • Named Entity Recognition for Distant Reading in ELTeC

    Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)
    Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.
    ... ry E n tit ie s . In Proceedings ofthe 2019 Conference ofthe NorthAmerican Chapter ofthe Associationfor Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), p a g e s 2 1 3 8 -2 1 4 4 , M in n e ap o lis , M in n e so ta , Ju n e . A sso c ia tio n fo r ...
    ... V olpes N u n e s, M ., M a m ed e , N . J ., O liv e ira , C ., a n d D ias , M . C ., ed ito rs , Computational Processing ofthe Portuguese Language: 7thInternational Workshop, PROPOR2006. Itatiaia, Brazil, May 2006(PROPOR'2006), p ag e s 8 0 -8 9 . S p rin g e r V erlag . h ttp s :/ /l in ...

  • 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
    ... offers safe data archiving for complex data models as this one, as well as all procedures for data manipulation. The use of SQL as a standard query language for data manipulation secures the openness of the hybrid system INVENTS for a connection with different environments. The VENTEX [2] system was ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Assessments of effects of implementation of strategic plans for development of Belgrade District heating system

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić (2020)
    The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...
    Daljinsko grejanje, LEAP, Primarni energetski faktor, Uvozna zavisnost, CO2 emisija

  • Fragmentation Size Prediction of Blasted Material Using a Specialized Software for Drilling and Blasting

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić, Miljan Gomilanović (2024)
    Design and optimizing the drilling and blasting parameters, should fill the requirements for the capacity, fragmentation size, and technical characteristics of loading and transport equipment, and enable a safe work at the open pit. Besides mentioned, it also achieves the minimal impact on the environment of the open pit and decreases the negative effects on the environment, especially in the blast vibration and flyrock. To obtain the best possible blasting effects and consider all the factors, a specialized software is ...
    optimization, O-Pitblast, drilling, blasting, fragmentation size

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... Nowadays, energy security is also closely in- volved with other issues, such as security of infrastructure, equality of access to modern energy technologies, energy efficiency, and climate change mitigation [6]. The Asia Pacific Energy Research Centre (APERC) [7] defines energy security as the ability ...
    ... of RES using for electricity and heat production im- proves SOS decreasing the import dependency, with significant introduction of contemporary technologies and wider applications of different energy sources (biomass, biogas, solar, wind, geothermal). Diversification of energy imports is mainly connected ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... РГФ] Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability | Marija Živković, Dejan Ivezić | Clean Technologies and Environmental Policy | 2021 | | 10.1007/s10098-021-02063-6 http://dr.rgf.bg.ac.rs/s/repo/item/0005475 Дигитални репозиторијум Рударско-геолошког ...
    ... available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Vol.:(0123456789)1 3 Clean Technologies and Environmental Policy https://doi.org/10.1007/s10098-021-02063-6 ORIGINAL PAPER Utilizing sewage wastewater heat in district heating systems ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... proven and quality machines with implemented unification as much as possible; Improvement of maintenance system; Implement modern and improved technologies in machine operation. Execution of these activities or just part of them will reduce the operational and maintenance costs, increase the volume ...

  • Energetska efikasnost elektromotora na površinskim kopovima

    Snežana Aleksandrović, Ilija Jeftenić (2023)

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization