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Упит dcterms_subject_txt:Serbian language

186 items

  • 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 ...
    ... used as the strategy for defining the model of processes and data in the development of INVENTS. In this paper, UML (Unified Modeling Language) as a standard language for visualization, specification, constructing and documenting of data on M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 ...
    ... design and research companies. We chose Visual Studio 6.0 as the programming environment for the devel- opment of SimVent. The Unified Modeling Language (UML) has been used as the most appropriate notation, and the system’s architecture was conceived in the form of a three-level class diagram. This ...
    ... 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. Figure 8 depicts the structure ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... konačni automati, transduktori, elektronski rečnici, kaskade i višečlane reči. about: Unitex about: Computational linguistics about: Natural language procesing about: Računarska linvistika about: Obrada tekstova na prirodnom jeziku about: elektronski rečnici about: analiza teksta about: ...
    ... search for educational resources using big search engines e.g. Google, Bing,... For that purpose BAEKTEL project implements LRMI as a markup language, where its simplicity makes it useful and easily implemented convention for tagging content. Key benefits of using this approach is expanded access ...

  • 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
    ... 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 ...
    ... BAJIĆ, D. 2014. Application of hydrody- namic predictive modeling on the example of the pump- ing station “Bezdan 1”. Tehnika, 65 (6): 956–962 (in Serbian, English summary). SINGH A.P., GHOSH S.K., SHARMA P. (2007). Water quality management of a stretch of river Yamuna: aninteractive fuzzy multi-objective ...

  • Testing the energy value of different types of coal by the method of active thermography

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković (2020)
    In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...
    Infrared imaging, nondestructive testing, active thermography, coal.

  • Witness of the history: A hundred years old the geological hammer of Jovan Zujovic

    Ljupko Rundić (2021)
    Током обележавања тридесет година постојања и рада Српског геолошког друштва 10. фебруара 1921. године, у знак великог поштовања према академику Јовану Жујовићу, председнику и оснивачу Српског геолошког друштва и српске геолошке школе, чланови СГД поклонили су му јединствени геолошки чекић са угравираном посветом и својим потписима. Током протеклих стотину година, многе генерације геолога проналазиле су инспирацију гледајући чекић и делећи ову причу с великим пијететом. Данас, када геолози посећују Спомен собу геологије (Рударско-геолошки факултет, ул. Каменичка бр. 6), где се пажљиво ...
    Геолошки чекић, Јован Жујовић, Српско геолошко друштво, 1921–2021

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... Dinarides orogenic systems and in terms of strain partitioning during oroclinal bending. 2. Tectonic evolution of the Serbian Carpathians and associated sedimentary basins The Serbian segment of the Carpathians–Balkanides forms part of the larger Europe-derived Dacia tectonic mega-unit (Fig. 1b). This ...
    ... Global and Planetary Change 195 (2020) 103361 7 Serbian Carpathians and amphibolite to sub-greenschist facies in the South Carpathians during Variscan times (Figs. 3, 4; Iancu et al., 2005b; Kalenić et al., 1980). In the Serbian Carpathians, these rocks are overlain by a transgressive- ...
    ... rotations have been taken up by the Serbian Carpathians after the Cretaceous thrusting (Fig. 5). 4.2. Paleogene to middle Miocene interplay between bi-directional extension and strike-slip Although not directly apparent in the large-scale structure of the studied Serbian Carpathians, our detailed field ...

  • 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 ...

  • Глаголи у кухињи и за столом

    Цветана Крстев, Биљана Лазић (2015)
    У раду је приказано истраживање лексике на српском језику кулинарског домена које се заснива на коришћењу доменског корпуса, електронских лексичких ресурса, пре свега WordNet-а и морфолошких речника, и локалних граматика. Приказане су доменске специфичности ових ресурса, како се користе, и међусобно употпуњују. Посебно је приказано како се коришћењем доменског корпуса могу екстраховати глаголи специфични за кулинарски домен и описати начини њиховог коришћења. Дат је попис глагола са основним подацима који је добијен применом представљених метода.
    аутоматска обрада, коначни трансдуктори, електронски речници, семантичке мреже, локалне граматике, кулинарство
    ... Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. Српски језик у дигиталном добу -- The Serbian Language in the Digital Age, Springer, in “META-NET White Paper Series”, Georg Rehm and Hans Uszkoreit (Series Editors). 2. ВУЈИЧИЋ СТАНКОВИЋ И ПАЈИЋ ...
    ... Staša Vujičić Stanković, Duško Vitas, “Approximate Measures in the Culinary Domain: Ontology and Lexical Resources”, in Proceedings of the 9th Language Technologies Conference IS-LT 2014, Ljubljana, Slovenia, 9-10 October, 2014, eds. Tomaž Erjavec and Jerneja Žganec Gros, pp. 38-43, Institut "Jožef ...
    ... 59, Међународни славистички центар, Београд. 3. ВУЈИЧИЋ СТАНКОВИЋ И ДР. 2014: Staša Vujičić Stanković, Cvetana Krstev, Duško Vitas, “Enriching Serbian WordNet and Electronic Dictionaries with Terms from the Culinary Domain”, In The Proceedings of Seventh Global WordNet Conference 2014, eds. Heili ...

  • The lost freshwater goby fish fauna (Teleostei, Gobiidae) from the early Miocene of Klinci (Serbia)

    Katarina Bradić-Milinović, Harald Ahnelt, Ljupko Rundić, Werner Schwarzhans (2019)
    Freshwater gobies played an important role in the Miocene paleolakes of central and southeastern Europe. Much data have been gathered from isolated otoliths, but articulated skeletons are relatively rare. Here, we review a rich assemblage of articulated gobies with abundant otoliths in situ from the late early Miocene lake deposits of Klinci in the Valjevo freshwater lake of the Valjevo-Mionica Basin of Serbia. The fauna was originally described by Anđelković in 1978, who noted many different fishes, including one ...
    Gobiidae, Klincigobius, Rhamphogobius, Toxopyge, Otoliti in situ, Srpski jezerski sistem

  • Middle Miocene otoliths of freshwater fishes from the Vracevic Lake (Serbian Lake System)

    Katarina Bradić-Milinović, Ljupko Rundić, Werner Schwarzhans (2021)
    средњи миоцен, отолити, Врачевић, Ваљевско-mионички басен, Српски језерски систем

  • Analiza uporednog praćenja temperature površine ohlađenih materijala pri njihovom zagrevanju do ambijentalne temperature

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Katarina Nestorović (2021)
    U datom eksperimentalnom radu su termografskim metodama ispitivane termofizičke karakteristike različitih materijala. Za ispitivanja su izabrani mesingani niovčić, ugalj i pelet, jer imaju različita termoizolaciona svojstava i različito stanje površine. Uzorci su najpre hlađeni, a zatim je njihovo zagrevanje na sobnoj temperaturi praćeno termalnom kamerom. U drugom delu eksperimenta, korišćena je impulsna termografija, a zagrevanje površine uzoraka vršeno je svetlosnom pobudom.
    termografija, impulsna termografija, nedestruktivno testiranje materijala, mesing, ugalj, pelet

  • Primena termografije u rudarstvu

    Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić (2019)
    Danas, gotovo da nema oblasti u nauci i tehnici u kojoj se Infracrvena termografija ne primenjuje kao metoda za lociranje i praćenje zagrejanih objekata ili tela, beskontaktnu procenu temperature površina, i nedestruktivno ispitivanje materijala. U radu su prikazane mogućnosti i perspektive primene ove metode u oblasti rudarstva.
    infracrvena termografija, rudarstvo, monitoring
    ... pozicijama u rudarskim kompanijama shvate prednosti primene ovih uređaja. Literatura [1] Gaussorgues G., Infrared Thermography. English language edition, Berlin, Germany: Springer-Science+Busness Media,1994. [2] Maldague X. P. V., Active Thermography in Nondestructive evaluation of materials ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increas- ingly important. Given that the natural language used by miners and geologists is most suited for relaying: knowledge and expressing; opinions, the paper tests a fuzzy optimization methodology ...

  • 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

  • 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

  • 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

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... constructive sug- gestions and corrections, which greatly improved the paper. The authors are also grateful to Dobrila Nikolić, MA in English, for language and style corrections and to the chemical company Elixir Prahovo for providing the samples for analysis. Financial support. The research was supported ...
    ... the purified gypsum. This increase in the WI benefits the potential use of recrystallized phosphogypsum in various industries. For example, in the Serbian cement indus- try, A-grade cements should have WI values >80%, so for gypsum to be used as one of the components of A-grade cements, it must comply ...
    ... on Cement Quality. Official Gazette of the Republic of Serbia No. 44. National Assembly of the Republic of Serbia, Belgrade, Serbia, 11 pp. (in Serbian). RS Official Gazette (2018) Rulebook on Limits of Radionuclides Content in Drinking: Water, Foodstuffs, Feeding Stuffs, Medicines, General Use ...

  • 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

  • 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
    ... and each interval is characterized by an adequate linguistic variable. The variable whose values are words or sentences in a natural or artificial language is called a linguistic variable. We use five linguistic variables n = 5 to describe displacement intensity of configuration of the gate road support; ...
    ... and each interval is characterized by an adequate linguistic variable. The variable whose values are words or sentences in a natural or artificial language is called a linguistic variable. We use five linguistic variables n = 5 to describe displacement intensity of configuration of the gate road support; ...