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Упит dcterms_subject_txt:continuous part of combined system (CCS)

2852 items

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (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 ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... the optical center of the instrument (0,0,0), with an accuracy of а few millimeters. In result, it generates a discrete surface model consisting of millions of points called point clouds, referenced to a relative Euclidean coordinate system originating from the optical center of the instrument. ...
    ... and increased the acquisition frequency after detecting a large part of one rock face with a massive tabular block slowly detaching. They managed to capture the acceleration stage of the rockslide and provided detailed analysis of pre-failure stages by comparing against numerous (weekly collected) ...
    ... cross-sections from point clouds for each sequence at the same position and provide 2D impression (XZ) of the componential and total displacements. Profile line is placed across the most active part of the AOI selection near-perpendicular to slope in X-axis direction (figure 2). Comparison between ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... specific morphological dictionaries. Morphological dictionaries of Serbian simple words and compounds in the so-called LADL format (Krstev et al., 2010) are thus a necessary part of the lexical resources used by the BMP language support system. Besides Serbian, such resources exist for many other languages ...
    ... and structured sets of texts, both monolingual and multilingual, the latter often composed of aligned texts. Finally the World Wide Web itself represents a textual resource that BMP language support system makes use of. The language support system handles various types of requests issued by ...
    ... order to enable sharing of BMP metadata with other OER repositories. However, the mandatory elements for BAEKTEL learning resources had to be selected very carefully, as metadata must not become the bottleneck of the entire system. As a result of an in-depth analysis of metadata requirements ...

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... (PPR), polarity of positive sentiment words (PSP), ordered sequence of sen- timent tags (OSA), Part-of-Speech tags of words (POS) and irony markers (M). The evaluation was performed on two collections of tweets that had been manually annotated according to irony. These collections of tweets as well as ...
    ... complete set of irony markers in lexicon form (resource B in Fig. 1) is a part of the architecture of the suggested model. Ironic tweet classifier (Fig 1) for the purpose of feature construc- tion uses: (1) a set of antonymous pairs (a, z) obtained from the SWN ontology (resource D) a lexicon of irony markers ...
    ... first one in a series of given relations. That is how we have obtained 471 reasoning rules for retrieving an indirect member of the antonymous relation, that is to say, for establishing an ironic relationship with the opposite member of the antony- mous relation. A part of the set of rules that begin with ...

  • Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities

    Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov (2024)
    Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...
    полилексемске језинице, именовани ентитет, вишезначност значења речи, складиште смисла, LLOD

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... purpose of comparing different projections of natural gas consumption, six possible projections were analysed in model. Results of combined scenario of OPT scenario of infrastructure development with Referent consumption scenario is presented. Figure 2 and Table 7 shows the affiliation of Environmental ...
    ... substitution of fossil fuels with worse environmental characteristics. The intensive consumption scenario envisages higher consumption of natural gas compared to the Reference scenario, primarily due to projections for the construction of gas power plants for combined production of electricity ...
    ... also occur [10]. Indicators of the technical and/or energy aspect may be secure of supply, availability of energy (different sources and directions of supply), energy production, stability and price level of energy, as well as technical availability of the system. Socio-economic indicators include ...

  • 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
    ... Illustrative part of gantographic display of the initial phase of the project to improve the environmental protection system in mining and energy complexes. Figure 6. Illustrative part of network diagram of the initial phase of the project to improve the environmental protection system in mining and ...
    ... Illustrative part of gantographic display of the initial phase of the project to improve the environmental protection system in mining and energy complexes. Figure 6. Illustrative part of network diagram of the initial phase of the project to improve the environmental protection system in mining and ...
    ... Illustrative part of gantographic display of the initial phase of the project to improve the environmental protection system in mining and energy complexes. Figure 7. Illustrative part of gantographic display of branched structure of the project to improve the environmental protection system in mining ...

  • 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
    ... sediments, sands and pebbles (Figure 1). The rocks of the basin bedrock were discovered on the surface of the terrain in the zone of the Fruska Gora horst. The site of Ljuba is located in the southwestern part of Vojvodina province on the southern slopes of the Fruska Gora horst. The horst structure, extending ...
    ... 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 ...
    ... 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 ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... discussed by Pastor et al. (2009) considering: A. balance of mass of the mixture—propagating along the slope and increasing due to bed entrainment—combined to the balance of linear momentum of pore water, B. the balance of linear momentum of the mixture, C. a kinetic relation between the defor ...
    ... influence of the river will give complete insight in behavior of the process. 6 ACKNOWLDEGEMENTS The research results would not had been possible without ERASMUS+ Programm between University Politechnico of Madrid, Spain and University of Belgrade, Serbia. Field research was part of the Project ...
    ... landslide aWAREness” (BEWARE) funded by the People of Japan and the UNDP Office in Serbia (grant No 00094641). All activities are also a part of the Project TR36009 funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia. 7 REFERENCES Chen, C. and Ling, ...

  • 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

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Reliability of Rubber Conveyor Belts as a Part of the Overburden Removal System - Case Study: Tamnava-east Field Open Cast Mine

    Bugarić Uglješa, Tanasijević Miloš, Polovina Dragan, Ignjatović Dragan, Jovančić Predrag (2014)

  • Steel Arch Support Deformations Forecast Model Based on Grey–Stochastic Simulation and Autoregressive Process

    Luka Crnogorac, Suzana Lutovac, Rade Tokalić, Miloš Gligorić, Zoran Gligorić (2023)
    Relatively large deformations of the steel arch support in underground coal mines in the Republic of Serbia present one of the main problems for achieving the planned production of coal. Monitoring of the critical sections of the steel arch support in the underground roadways is necessary to gather quality data for the development of a forecasting model. With a new generation of 3D laser scanners that can be used in potentially explosive environments (ATEX), deformation monitoring is facilitated, while ...
    čelična podgrada, prognoza deformacija, vremenske serije, grey-stohastička simulacija, autoregresija, podzemni rudnik uglja

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • The recent fault kinematics in the westernmost part of the Getic nappe system (Eastern Serbia): Evidence from fault slip and focal mechanism data

    Mladenović Ana, Trivić Branislav, Antić M., Cvetković Vladica, Pavlović Radmila, Radovanović S., Fügenschuh Bernhard (2014)

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • 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
    ... category of coupled numerical and symbolic systems (Kowalik, 1986). The numerical part consists of SimVent simulation routines and the symbolic part of the mine ventilation expert’s knowledge. Fig. 8. Database structure of the SimVent package Successful implementation of a coupled system requires ...
    ... secures the openness of the hybrid system INVENTS for a connection with different environments. Figure 8 depicts the structure of the database part relevant to SimVent through the MSAccess Relationships panel. The VENTEX system was developed as a knowledge-based (symbolic) upgrade of the SimVent numerical ...
    ... requires the solving of a number of complex problems in order to obtain efficient communication between the symbolic and the numerical part of the system. In order to cope with this problem a separation of processes in coupled systems into independent modules is suggested. Furthermore, information interchange ...