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Упит dcterms_subject_txt:multi-word units

332 items

  • Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning

    Petar Marković, Dejan Stevanović, Milica Pešić Georgiadis, Mirjana Banković (2021)
    The process of creating a geological block model as the basis for a further detailed design and planning of mining operations is a very responsible task. Errors made during this initial process are transferred to all other phases of the mining project. Certainly, one of the most important decisions for the modelling process is the choice of the appropriate size of the blocks that form the model itself. The determination of the optimal block size is not a simple ...
    dimenzije minibloka, višekriterijumska analiza, AHP, modeliranje ležišta, planiranje na površinskim kopovima

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje
    ... water table depth in different aquifers (see Section 3.2.2). The hydro- geological function of rock units was routinely reconstructed from the geological map, (Fig. 3a), first by aggregating rock units of similar genesis and age, and then by assigning the most likely aquifer type. Most of the study area ...
    ... testing. The dataset is exceptionally rich with detailed geological, morphological and environmental data, so 24 landslide predictors were used for multi-class mapping: Class 0 – stable ground, Class 1 - dormant landslides, and Class 2 – active landslides. Two state-of-the-art algorithms were implemented: ...
    ... preferred method since they provided accurate results and generalized effectively regardless of the input data distribution or type. Recently, ensemble (multi- or meta-) learning has become more popular in LSA than SVM and other techniques. Random Forest (RF), a relatively new ensemble learning technique, ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)

  • 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
    ... sets is given in Figure 1. They are defined according to the values of the membership function μ and the estimates of the units of measurement j (j = 1,…, n). The units of measurement parameters (kW, kN, MPa, working hours, number of interventions, €/mh, etc.) are defined through the value ...
    ... method presented in this paper relies on Fuzzy theory and represents another approach to the analysis of existing data in addition to methods based on Multi-Criteria Decision Making (MCDM). Keywords: Fuzzy theory; hydraulic excavator; selection; quality of service; asset management. 1. Introduction ...
    ... correlated with Industry 4.0. References [1] Jankovic, I., Djenadic, S., Ignjatovic, D., Jovancic, P., Subaranovic, T., & Ristovic, I. (2019). Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining. Energies, 12(12), 2245. [2] Ignjatovic, D., Subaranovic, T., & Djenadic ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri

  • 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

  • Fluid inclusion systematics in the Okoška gora polymetallic deposit

    Aleš Šoster, Miloš Velojić, Barbara Potočnik Krajnc, Matej Dolenec (2021)

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija

  • Remedijacija otpadnih voda Rudnika prirodnim zeolitom

    Igor Veličković (2024)
    U radu je razmatrano prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeolitskim tufom sa planine Jastrebac. Prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeoliskim tufom sa obronaka planine Jastrebac pokazala se veoma efikasnom. Naime, u tri otpadne flotacijske vode utvrđen je povišen sadržaj arsena, hroma, gvožđa, mangana, kao i nikla. Jednostavnim tretmanom zeolitskim tufom iz ovih voda uklonjeni su svi ovi elementi. Sadržaji gvožđe i mangana su sniženi od 95 do 99 %, dok su ...
    flotation waste water, zeolite tuff, purification
    ... Sorption of Chromate and Other Inorganic Anions by Organo-Zcolite. Environ. Sci. Technol. 1994, 28, 452—458. Janković, S., 1984. Major metallogenic units and ore deposits in Yugoslavia. In: Exp. Memoir of the Metallogenic Map of Europe, 1:2500000. UNESCO, Paris, pp. 385—395. Janković, S., 1990. ...
    ... 2006. The geodynamical framework of the Balkan Peninsula: its origin due to the approach, collision and compression of Gondwanian and Eurasian units. In: Robertson, A.H.F., Mountrakis, D. (Eds.), Tectonic Development of the Eastern Mediterranean Region, Geol. Soc. Spec. Publ. vol. 260. pp. 155—178 ...
    ... Agriculture and Aquaculture, Westview, Boulder, CO, 59, 1320. Robertson, A.H.F., Karamata, S., Šarić, K., 2009. Overview of ophiolites and related units in the Late Palaeozoic-Early Cenozoic magmatic and tectonic development of Tethys in the northern part of the Balkan region. Lithos 108 (1—4), 1—36 ...

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... learning by including modern educational techno- logies. As previously emphasized, the aim of teaching vocabulary is its active application and all the word lists offered will be brought to life only by their activation in many different ways and through consistent work. I would like to use this opportunity ...
    ... putting their own principles of clarity and coherence as a way in which they wish to teach the subject of English language and geology. Six thematic units: 1. Landslides 2. Metamorphic rocks 3. Mineral deposits 4. Hydrological cycle and groundwater 5. Surface water and glaciers 6. Geophysics ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... hy of the Middle-Upper Juras- sic deposits in the Tatra Mountains was proposed by Lefeld et al. (1985). In the interval studied, the following units were distinguished: the Soltysia MarIstone Formation, com- prising the Čomy Limestone Member (spotted limestones with marls) and the Broniarski ...
    ... AND STABLE-ISOTOPE RESULTS The six sections of the Middle-Upper Jurassic deposits studied in the Tatra Mountains represent various tectonic units of the Križna Nappe (Table 1). Thc sections are as fol- lows from west to cast (Fig. 1): Dluga Valley (Dolina Dliuga), Lejowa Valley (Dolina Lejowa) ...
    ... in these regions. The Fatricum Domain of the Central Western Carpa- thians is considered to be a lateral equivalent of the Middle Austroalpine units of the Eastern Alps (e.g., Mišik ef al., 1991; Hžiusler ef al., 1993; Csontos and Voros, 2004). Al- though the Jurassic palaeogeographic position ...

  • Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery

    Maja Milošević, Biljana Đorđević, Mihovil Logar (2020)
    калцит, сирова глина, традиционална керамика, Злакуса
    ... po si t 143 Geological units 'Conglomerate and incoherent sandstone Mari and dolomite Phyllite Metasandstone 3 Sandstone, slate, I andphylite Alluvium [%] Teraces Deposit of cement marl Research area Lat: 43.8779600 Lon:19.9718600 Geological units BBM Bedded andhick-bedded ...

  • Речник САНУ као база терминолошких речника (на примеру речника кулинарства)

    Рада Стијовић, Олга Сабо, Ранка Станковић (2017)

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...

  • 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

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)
    ... water quality G. Soppo,S. Ergu/ & F. Ferronti VU xi xiii I 3 t5 3t 45 55 79 93 vi Table of contents t2 I The major litho-structural units in selected areas of Northern Nigeria: Some statistics on the distribution of Ca and Mg are appended H.U. Dibal & U.A. Lor 9 Effect of mine waters ...
    ... geology of Serbia is highly complex and not conducive to generalised assess- ments. Broad geological provinces have been identified based on geotectonic units. In general terms) the provinces are (Filipovic et a\.,2005): the Carpatho-Balkanides, the Serbian Crystalline Core, the Vard ar Zone, the Inner Dinarides ...

  • The Jurassic ophiolitic mélanges in Serbia: a review and new insights

    Nevenka Đerić, Hans-Jürgen Gawlick, Milan Sudar (2024)
    radiolarije, Dinaridi, Tetis, Vardar, trijas-jura
    ... evolution of tectonic units. Swiss Journal of Geosciences, 101: 139-183. SCHMID, S.M., FUGENSCHUH, B., KOUNov, A., MATENCO, L., NIEV- ERGELT, P., OBERHANSLI, R., PLEUGER, ]., SCHEFER, S., SCHUS- TER, R., TOMLJENOVIĆ B., USTASZEWSKI, K. & VAN HINSBERGEN, D.J.J. 2020. Tectonic units of the Alpine collision ...

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation
    ... , covering both simple words and multi-word units (MWUs) and dictionary finite-state transducers, are used for IE and text tagging as part of various natural language applications (Krstev, 2008). Each e-dictionary consists of a list of entries, which can contain word forms, lemmas, morphosyntactic, semantic ...
    ... Faculty of Mathematics, Belgrade (in Serbian). Stankovi�c, R., Krstev, C., Obradovi�c, I., Lazi�c, B. and Trtovac, A. (2016), “Rule-based automatic multi- word term extraction and lemmatization”, in Calzolari, N., Choukri, K., Declerck, T., Goggi, S., Grobelnik, M., Maegaard, B., Mariani, J., Mazo, H. ...
    ... Faculty of Mathematics, Belgrade (in Serbian). Stankovié, R., Krstev, C., Obradovic, L, Lazi¢é, B. and Trtovac, A. (2016), “Rule-based automatic multi- word term extraction and lemmatization”, in Calzolari, N., Choukri, K., Declerck, T., Goggi, S., Grobelnik, M., Maegaard, B., Mariani, J., Mazo, H., Moreno ...

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... Pelagonian Zone BIŠaBP Rnodope complex [0 carpatho-Balkanides [7\ | Moesian Platform B l a c k s e a E===== 50 km Ć . [E osstal units of Adria [ Pannonian Basin josnian Flysch Zone Judva-Karsta-Cukali Zone | 0b |Šumadija-Kopaonik Pb-Zn/polymetallic district TOVO SOJ OM i “p | ...
    ... Schefer, S.; Schuster, R.; Tischler, M.; Ustaszewski, K. The Alpine- Carpathian-Dinaridic Orogenic System: Correlation and Evolution of Tectonic Units. Swiss J. Geosci. 2008, 101, 139–183. [CrossRef] 16. ŠosterA.;Zavašnik, J.; O'Sullivan, P.; Herlec, U.; Potočnik Krajnc, B.; Palinkaš, L.; Zupančič ...

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists