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Упит dcterms_subject_txt:Named Entity Recognition Systems

563 items

  • Hydrodynamic Model of The Open-Pit Mine “Buvač” (Republic of Srpska, Bosnia And Herzegovina)

    Bajić Dragoljub, Polomčić Dušan, Papić Petar, Stojković Jana (2011)

  • 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
    ... Technical Systems of Maintenance Engineering Availability is calculated on the basis of the time state picture, in which times of operation alternate with times of failure. The time state picture, i.e., the time and maintenance time structure for analyzing the availability of technical systems is shown ...
    ... dependent on reliability. Generally, dependability as a measure of availability is only a standardized, all-in concept, which describes technical systems from the point of view of design, operation, and maintenance [11]. It is evident that the standard provides a descriptive and linguistic definition ...
    ... uncertainty, indefinitely, multiplicity, subjectivity and mutual over-lapping. Fuzzy logic is used as a mathematical and conceptual model y expert systems with hybrid data. Unlike the classic crisp logic, fuzzy values are defined with membership function to proper linguistic variables [3]. The max–min ...

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... plants or through cogeneration systems) [1] and space heating and cooling (using the heat pumps) to direct use in a wide range of applications in areas such as balneotherapy [2,3], agriculture, industry, swimming pool heating, and in individual and district heating systems [4,5]. While harnessing geothermal ...
    ... plants or through cogeneration systems) [1] and space heating and cooling (using the heat pumps) to direct use in a wide range of applications in areas such as balneotherapy [2,3], agriculture, industry, swimming pool heating, and in individual and district heating systems [4,5]. While harnessing geothermal ...
    ... energy efficiency design strategies focused on a wide range of passive design measures that integrated the technology related to necessary active systems from the conceptual design phase. Water management in these facilities is very dependent on water composition, flow and temperature yet needs to be ...

  • Groundwater balance, natural recharge and drainage zones at open pit mine „Polje E“ of Kolubara Coal Basin (Republic of Serbia)

    Polomčić Dušan, Bajić Dragoljub, Ristić-Vakanjac Vesna (2012)

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... energy resources have been considered. The key one are solar photovoltaic systems that are proposed to be utilized to provide necessary onsite clean energy generation option [15]. Stand-alone or grid-connected photovoltaic systems could be in- stalled to deliver onsite power for running dedicated pumps ...
    ... equipment placed underground. Also, there is no need for investments in expensive process equipment, as well as conveyer or tube transportation systems for slag and ash to landfills. Considering these benefits indicates how significant economic effects of the UCG application are. In parallel ...
    ... obtained is a gas or gas mix- ture that consists of CO, CO», and H», and at elevated pressures and temperatures (in particular with the current UCG systems), CH, is also present. Generated gas mixture is similar to natural gas. If a vapor-oxygen mixture is used as a gasification agent instead of air ...

  • Genesis and circulation of fresh and thermal groundwater flows in same karstic aquifer - Case examples from the Carpathian karst of eastern Serbia

    Vasić Ljiljana, Milanović Saša, Stevanović Zoran (2013)

  • Attenuation of bacteriological contaminants in karstic siphons and relative barrier purifiers – Case examples from Carpathian karst in Serbia

    Vasić Ljiljana, Stevanović Zoran, Milanović Saša, Petrović B (2015)

  • Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala

    Miodrag Čelebić (2024)
    Izbor optimalne mehanizacije u diskontinualnom sistemu transporta je jedna od najvažnijih odluka koju treba donijeti prilikom projektovanja površinskih kopova. Pri izboru optimalne mehanizacije, uticaj ima veliki broj faktora, kako prirodnih – geoloških i ekoloških, tako i tehničkih, ekonomskih i socijanih. Neki od njih se mogu izraziti numerički, u određenim mijernim jedinicama, a neki opisno, lingvističkim varijablama, shodno uslovima koji vladaju na rudnim ležištima, a koje karakterišu visok stepen neizvjesnosti i neodređenosti kako prilikom istraživanja, tako i tokom procesa eksploatacije ...
    izbor mehanizacije, tehnologija eksploatacije, diskontinualani sistem, ekspertsko odlučivanje, lingvističke varijable, MCDM, FAHP

  • An example of karst catchment delineation for prioritizing the protection of an intact natural area

    Ristić-Vakanjac Vesna, Stevanović Zoran, Maran Aleksandra, Vakanjac Boris, Čokorilo Ilić Marina (2014)

  • Attenuation of Bacteriological Contaminants in Karstic Siphons and Relative Barrier Purifiers: Case Examples from Carpathian Karst in Serbia

    L. Vasić, Z. Stevanović, S. Milanović, B. Petrović (2015)

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... eters and Mixing Models for Geothermal Systems, Geothermics, 5 (1977), 1-4, pp. 41-50 [8] Hitchon, B., et al., Introduction to Ground Water Geochemistry, Geoscience Publish. Ltd, Edmonton, Al- berta, Canada, 1999 [9] Giggenbach, W., et al., Geothermal Systems, Guidebook on Nuclear Techniques in Hydrology ...
    ... geothermal water could be used either for heating or for cultivation on the area bigger than 5 ha. Milanovi} et al. [5, 6] develop geothermal heating systems for Smederevska Palanka and Debrc. The geothermal flow rate is 2.5 l/s and the water temperature is 48 °C, about 7.5 tons of fuel oil or 82.6 MWh ...
    ... geothermal water could be used either for heating or for cultivation on the area bigger than 5 ha. Milanovic et al. [5, 6] develop geothermal heating systems for Smederevska Palanka and Debrc. The geothermal flow rate 1s 2.5 I/s and the water temperature is 48 °C, about 7.5 tons of fuel oil or 82.6 MWh of ...

  • 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
    ... and Applications (IJERA), 2, 1147‐1151. JIANG, J. J. & KLEIN, G. 1999. User evaluation of information systems: By system typology. Systems, Man and Cybernetics, Part A: Systems and Humans, IEEE Transactions on, 29, 111‐116. JOHNSTONE, R. 1999. Improving worker safety: reflections on the ...
    ... e application in a financial knowledge management system. Expert Systems with Applications, 36, 3614‐3622. CLARK, T. D., JONES, M. C. & ARMSTRONG, C. P. 2007. The dynamic structure of management support systems: theory development, research focus, and direction. Mis Quarterly ...
    ... Business Press. DELONE, W. H. & MCLEAN, E. R. 2003. The DeLone and McLean model of information systems success: a ten‐year update. Journal of management information systems, 19, 9‐30. DEVEDZIĆ, V. 2002. Understanding ontological engineering. Communications of the ACM, 45, 136‐144 ...

  • 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

  • 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)

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... sign-on (SSO). Single sign-on is a feature of access control of multiple related, but independent software systems. It allows the user to log in once and gain access to all systems within the network without being prompted to log in again at each of them[15]. After setting up a new OER, resource ...
    ... this learning object. The attributesin the Rightscategory are publisher, rights and cost.Publisher is the individual, group, or organization named in the document as being responsible for that document’s publication, distribution, issuing, or release. Rights includes information about various ...
    ... educational resources and the approach to BAEKTEL metadata definition. In section 4a review of the main open source Digital Asset Management (DAM)systems for e The Fifth International Conference on e-Learning (eLearning-2014), 2 Lea 4 Nn ] Ng 2014 22-23 September 2014, Belgrade, Serbia 5th Conferenceon ...

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... grossular-andradite garnets in hydrothermal systems. European Journal of Mineralogy 7, 1399–1410. https://doi. org/10.1127/ejm/7/6/1399 Keppler H. & Wiyllie P.J. 1991: Partitioning of Cu, Sn, Mo, W, U and Th between melt and aqueous fluid in the systems haplogra nite- H2O-HCl and haplogranite-H2O-HF ...
    ... et al. 2008; Zhai et al. 2014; Park et al. 2017; Xiao et al. 2018). Zonation patterns of skarn garnets as indicator of changes in hydrothermal systems during garnet growth have been dis- cussed by several researchers (e.g. Jamtveit et al. 1993, 1995; Pollok et al. 2001). Oscillatory zoning in skarn ...
    ... garnet growth, as well as, reactions controlled by fluid pathways. Zoned garnets with Al-rich cores and Fe-rich rims are the commonest in skarn systems, due to the tendency of early prograde garnets to be Al-enriched and retrograde in the first stage or later garnets to be Fe-enriched in the second ...

  • Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles

    Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)
    Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
    Kinetika, Ravnoteža, Ru(II), L-Histidin, Guanozin-5' -monofosfat, Dimetilsulfoksid, Tiourea
    ... 50-GMP. Finally, knowledge of the composition and stability of the species in the studied systems, especially at physiological pH, could contribute to a better understanding of some interactions in biological systems. Experimental RuCl3�xH2O, a starting salt for other synthesis, was pur- chased from ...
    ... L-histidine was investigated by potentiometry and spectrophotometry as well. The stoi- chiometry and stability constants of the species formed in these systems were determined. The concentration distri- bution diagram of the various complexes has been evaluated as a function of pH. Comparing the calculated ...
    ... ] 2?, HL = 50-GMP or L-His) was calculated using the computer program Hyperquad 2006 [50]. The formation constants calculated for the selected systems are given in Table 2, while the distributions are shown in Figs. 6 and 7 (Sup- plementary Material, Figs. 3S and 4S). It is well known that 50-GMP ...

  • Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)

    Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina (2013)