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Упит dcterms_subject_txt:expert system

716 items

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... Previous Monitoring Activities (2010–2014) Automated GNSS Monitoring One of widely used system which is proven to be an effec- tive and reliable tool for landslide monitoring is Global Navigation Satellite System (GNSS). Gili et al. (2000) give a general overview of the basic principles and discuss ...
    ... large and slow-moving landslides (Mansour et al. 2011). The first automated GNSS monitoring system in Serbia was established in March 2010, on Umka landslide (Abol- masov et al. 2012). The GNSS monitoring system consists of GNSS network and supporting software solution. The net- work is consisted of ...
    ... a permanent GNSS service of accurate satellite positioning over the Republic of Serbia. The system is using two Leica Geosystems software solutions: GNSS Spider and GeoMoS (Geodetic Monitoring System). All observed GNSS measurements, with observa- tion rate of 30 s, are collected by GNSS Spider ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... 2. Geothermal system According to the geological settings of the terrain and the results of the analyzed parameters, the geothermal system of the Valjevo-Mionica basin belongs to the conductive type within the sedimentation basin (foreland basin/orogenic belt). The geothermal system consists of a ...
    ... ages (Figure 3). Miocene isolator Geothermal reservoir Paleozoic basement - isolator Figure 3. Generalized cross section N-S of the geothermal system in the Triassic limestone of the western part of the "Valjevo-Mionica" basin — Legend: Yellow — Neogene sediments; Puprule shades — Triassic rocks; ...
    ... data. Considering that the reservoir is interpreted to facilitate convective heat flow, the gradients are significantly lower than in the conductive system. With this in mind, the geothermal gradients of the Triassic reservoir are estimated at 1-2 "C/100 m. Finally, depending on the estimated reservoir ...

  • Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model

    Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak (2024)
    The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...
    displacement, survey, inverse velocity, open pit

  • 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

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... is crucial for non-ETS economies where empirical data is limited, and GDP projections with the introduction of carbon pricing are often based on expert estimates or trends observed in other coun- tries. The revenue generated by carbon pricing and how it is reinvested plays a pivotal role in determining ...
    ... tumn_forecast-2023_rs_en.pdf. (Accessed 10 April 2024). European Commission, 2024. EU Emissions Trading System (EU ETS). https://climate.ec, europa.eu/eu-action/eu-emissions-trading-system-eu-ets_en. (Accessed 10 April 2024). European Union, 2018. Regulation (EU) 2018/1999 of the European Parliament ...
    ... Forecast average carbon permit prices under the European Union EEmissions Trading System (EU-ETS) from 2023 to 2025. https://www.statista.com/s tatistics/1401657 /forecast-average-carbon-price-eu-emissions-trading-system/#:~: text=European%20Union%20Emissions%20Trading%20System,first%20time%20in %2 ...

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... consequently all its inflected forms (which is crucial for various applications, from searching to machine translation). 3. The Design of the System The System consists of several components developed in C# and Python and interconnected to work in a pipeline. It relies on existing monolingual extraction ...
    ... evaluated in a 5-fold cross validation setting on a slightly unbalanced dataset, maintaining average F-score of 89%. After conducting the experiment our system extracted 846 different Serbian domain phrases, containing 515 Serbian phrases that were not present in the existing domain terminology. Keywords: ...
    ... hypothesis:2 On the basis of the bi-lingual, aligned, domain-specific textual resources, the termino- logical list in the source language and the system for the extraction of terminology-specific nomi- nal phrases (MWT) in the target language it is possible to compile the bilingual aligned termi- nological ...

  • The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin

    Filip Anđelković, Dejan Radivojević (2019)
    gornji miocen, litostratigrafske jedinice, formacije, Panonski basen
    ... demonstrates that normal faulting migrates in time and space and took place on a wide Miocene time interval (roughly 20 – 5.5 Ma). The Pannonian Basin System encompasses a number of subdepressions, regions with varying age, deposited over different basement rocks and with different sediment thinckness ...
    ... geophysical methods (reflection seismics and geophysical well-logging). Such correlation has great significance for the knowledge of the Pannonian Basin System. Besides that, it also has a practical role: a better understanding of the time and character of deposition leads to a better understanding of ...
    ... the junction area between the Carpathians and the Dinarides. Tectonics. 31, TC6007 8. Radivojević, D., (2019). Pannonian Basin, Pannonian Basin System and Pannonian realm – three different concepts. GeomorForum 2019 Book of abstracts, pp 14-15 ...

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... main trends of the fault network. First, the (F1) fault system is generally oriented in a NW – SE direction (Fig. 17a, b). In the study area, the Topčiderska Reka (TR), Zavojnička Reka (ZF) and Kaludjerica (KF) faults belong to this system. Later, from the post-Sarmatian time, some of them were ...
    ... events these faults were reactivated (MAROVIĆ et al., 2007; see Fig. 18). The younger, second fault system (F2) is related to the formation and later evolution of the Pannonian ba- sin. The (F2) faults system orientation reflects a general ENE- WSW direction with a pronounced NE-SW direction (Fig.17a, b) ...
    ... In the study area, the Rakovica (RF), Beli Potok (BP) and Torlak (TO) faults are recognized within this system. They are responsible for the dissection of the older faults from the F1 system (Fig. 17a) and along these ENE – WSW oriented faults the block structures with pronounced vertical movements ...

  • The Nooj System as Module within an Integrated Language Processing Environment

    Ranka Stanković, Duško Vitas, Cvetana Krstev (2008)
    NooJ, electronic dictionary, lexical resources
    ... Измењено: 2023-10-14 04:06:37 The Nooj System as Module within an Integrated Language Processing Environment Ranka Stanković, Duško Vitas, Cvetana Krstev Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The Nooj System as Module within an Integrated Language ...
    ... publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs The NooJ system as module within an integrated language processing environment Ranka Stanković, ranka@rgf.bg.ac.yu Duško Vitas, vitas@matf.bg.ac.yu Cvetana ...
    ... consisting of a set of English keywords: ‘computer, computing machine, computing device, data processor, electronic computer, information processing system’. Similarly, English query ‘document‘, is expanded by English wordnet to ‘document, written document, papers’ which is then transformed by ILI ...

  • Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater

    Veljko Marinović (2021)
    Modelling of karst hydrogeological systems is a very complicated task, bearing in mind that for a deterministic model one should know the internal physical processes of precipitation transformation into discharge, while for a stochastic model nonlinear dynamic systems such as karst should be simulated by linear regression equations. Stochastic models need linearization of input time series due to often large residual in the recession period. This occur because the model is not able to absorb single rain episodes, which ...
    karstne podzemne vode, stohastičko modeliranje, transfer funkcije, pokretni prosek

  • Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia

    Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić (2022)
    The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...
    mine water, hydrogeology, multivariant statistics, groundwater inflow, water quality

  • Knowledge and Rule-Based Diacritic Restoration in Serbian

    Cvetana Krstev, Ranka Stanković, Duško Vitas (2018)
    In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).
    diacritic restoration, morphological dictionary, corpus, word n-grams, local grammars
    ... integration of the RussNet the- saurus (Azarowa, 2008) and the YARN thesaurus YARN (Braslavski et al., 2016) into a single linguistic resource, where the expert approach and the crowdsourcing will be combined. For Russian, traditional information-retrieval thesauri in social sciences and the humanities have ...
    ... training collection for learning the algorithms. However, many organizations have a need in automatic text categorization, when even a category system (system Proceedings of CLIB 2018 97 Figure 3: Security thesaurus terms found in a text. Brown and blue boxes show ambiguous terms, which should be ...
    ... ”tennis problem” (Miller et al., 1990), the domain system was intro- duced in RuWordNet. The tennis problem is that synsets from the same domain (tennis player, racket, court) are very far from each other in the WordNet hierarchy. The WordNet domain system proposed in (Magnini and Cavaglia, 2000) was adapted ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... The complex geological structure of the terrain has led to the development of a complex hydrogeologic system, where there is a hypogenic karst aquifer in addition to the local hydrogeologic system. Based on the structural type of porosity, the karst aquifer is dominant. Other aquifer types are less ...
    ... detailed observation program should be an important task of sustainable tunnel management. Keywords: water-conveyance tunnel; complex hydrogeologic system; hydraulic behavior; in situ tests; groundwater aggressiveness; tunnel vulnerability 1. Introduction The presence of an underground structure in ...
    ... detailed observation program should be an important task of sustainable tunnel management. Keywords: water-conveyance tunnel; complex hydrogeologic system; hydraulic behavior; in situ tests; groundwater aggressiveness; tunnel vulnerability 1. Introduction The presence of an underground structure in ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • GIS Application Improvement with Multilingual Lexical and Terminological Resources

    Ranka Stanković, Ivan Obradović, Olivera Kitanović (2010)
    ... resources, most of them developed within the Human Language Technology (HLT) Group at the University of Belgrade, with the Geological information system of Serbia (GeolISS) developed at the Faculty of Mining and Geology and funded by the Ministry of the Environmental protection. The approach to GeolISS ...
    ... resources, most of them developed within the Human Language Technology (HLT) Group at the University of Belgrade, and the Geological information system of Serbia (GeolISS), developed at the Faculty of Mining and Geology and funded by the Ministry of the Environmental protection. Two basic results ...
    ... inflective languages, such as Serbian. Multilingual map annotation is outlined in Section 4 and Query expansion in section 5. 2. GeolISS This system represents a repository for digital archiving, query, retrieving, analysis and visualization of geological data, and allows users to create interactive ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... is to make clearer the system and allows for more explicit analysis of the project through analysis of the components of the system, which is the promise of a ‘‘white box’’ approach. Furthermore, this type of analysis of the inner components and the logic of the system can enable needed analyses ...
    ... existing in the literature focus on different elements of e-learning. Four groups of definitions can be identified: technology-driven, delivery-system-oriented, communication-oriented, educational-paradigm-oriented [15]. According to this last one perspective, E-Learning can be defined as ...
    ... approaches, Linzalone and Schiuma [21] distinguished 57 models. The E-Learning Project (EP) is characterized by a complex and hard to capture system of results/benefits, due to: intangible nature of the results (learning and knowledge), difficulty of quantifying them in economic, social, cultural ...

  • Примена дискретног ауторегресивно – кросрегресивног модела покретног просека за прогнозу дневних вредности издашности врела Мокра и Дивљана

    Бранислав Петровић, Вељко Мариновић (2021)
    Аутокорелациона и кроскорелациона анализа временских серија падавина и истицања подземних вода карстних врела Мокра и Дивљана (Сува планина, ЈИ Србија) извршена је ради формирања стохастичког ауторегресивно-кросрегресивног модела (ARCR) и прогнозе дневних вредности издашности. Будући да је тешко предвидети просторну дистрибуцију подземних вода у оквиру карстног хидрогеолошког система услед постојања хетерогености и анизотропности карстне издани (тј. кречњачких стена у овом случају), апликативност детерминистичких модела је минимизирана, па је примена стохастичког модела у овом случају учинковитија. Овим моделом могуће је дати ...
    карстно врело, стохастички модел, анализа временских серија, ауторегресивно-кросрегресивни модел (ARCR)

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ana Mladenović, Jelena Ćalić (2021)
    Methods to determine seismic hazard in any region vary depending on the regional seismicity, but can be roughly grouped into two main groups: one based on probabilistic methods that use data about known seismicity in the region, and another, which is based on data related to the faulting processes and determination of seismically active faults. Both groups of methods are relatively good for seismically active regions. However, in regions of low seismic activity and slow deformations, there is neither ...

  • Punctuated, episodic magmatism and mineralization of the Rogozna skarn-hosted Au-Zn-Pb-Cu deposits revealed through high-precision U-Pb zircon geochronology

    Sean P. Gaynor, Milorad D. Antić, Vladica Cvetković, Kristina Šarić, Urs Schaltegger (2023)
    The subvolcanic regions of magmatic centers are commonly associated with alteration, mineralization, and economic ore deposits, however the duration and frequency of mineralizing pulses within the overall lifespan of these centers can be poorly defined. Therefore, models for the formation of mineral systems require more highprecision geochronology data to refine their evolutionary models. Rogozna Mountain and its eponymous magmatic complex, located in SW Serbia, hosts multiple base metal deposits associated with variable rock types and structural expressions and serves as a natural laboratory to ...
    Skarnovska mineralizacija, Magmatsko-hidrothermalni sistemi, Subvulcanske intruzije, geohronologija na cirkonima, CA-ID-TIMS