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Упит dcterms_subject_txt:document classification

236 items

  • Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi

    Anđela Despotov (2024)
    U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...
    meke stenske mase, dezintegracija, klasifikacioni sistemi, Slake durability test
    ... klasifikacionih sistema. Jedan od primera modifikacije je Weak Rock Mass Rating System (W- RMR). Dobijen je korelacijom RMR i Unified Soil Classification Sistem (USCS) klasifikacionih sistema. Detaljnija obrada ove modifikacije biće prikazana u radu. Drugi izbor, prilikom klasifikacije slabih ...
    ... primene klasifikacionih sistema za stene i tlo, ponekada se koriste klasifikacioni sistemi tla, jer daju približnije rezultate. Unified Soil Classification Sistem (USCS) je najčešći izbor za klasifikaciju meke stenske mase do materijala nalik tlu. Razlog tome je njegova upotreba u projektima tunelskog ...
    ... for Slake Durability of Shales and Similar Weak Rocks. ASTM designation D 4644-08 4.. Bar, N. i dr., (2023), A 2023 perspective on Rock Mas Classification Systems. 5th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) OGG 5. Barla, G., (1990), Stress, Strength and ...

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија
    ... represent  individual sandstone  layers. The correlation  is based on similarity  in the shape of well‐log curves, well  data and chronostratigraphic classification, disregarding depositional environments where hydrocarbon‐ bearing  layers occurred. Due to  inconsistencies  in the selection of markers  in  ...
    ... ation of reservoirs used in practice is based on similarity in the shape of wel logs  (E‐log  markers),  well  data  and  chronostratigraphic  classification,  disregarding  depositional  environ‐ ments. Figure 1b represents the approach used  in  industrial  identification, designation and correlation  ...

  • 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

  • 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
    ... Andraševec (upper part): slope sediments 4. Újfalu – Kikinda – Nova Gradiška: shallow-water deltaic sediments A rough petroleum geological classification of these formations would be like this: Formation 1 – source rocks; Formation 2 – reservoir rocks; Formation 3 – seal rocks; Formation 4 – ...

  • Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije

    Vladimir M. Simić (2003)
    Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...
    prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnost

  • Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)

    Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања

    Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић (2023)
    геохемија, угаљ, продукти сагоревања, XRF, ICP-MS

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... relative magnitude of the two principal Hencky strains. Thereby, our method introduces a physically meaningful classification of large 2-D strains. We show that our strain type classification method allows for accurate mapping of tectonic structures in analogue models of lithospheric deformation, and ...
    ... able to use the measure for qualitative classification of the strain type. Because the strain type is constant for a certain type of deformation, irrespective of its size, the temporal behaviour of deformation is not of importance for the strain classification. We can thus use the Hencky principal strains ...
    ... able to use the measure for qualitative classification of the strain type. Because the strain type is constant for a certain type of deformation, irrespective of its size, the temporal behaviour of deformation is not of importance for the strain classification. We can thus use the Hencky principal strains ...

  • Infotheca (Q25460443) in Wikidata

    Ranka Stanković, Lazar Davidović (2021)
    Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.
    semantički veb,otvoreni povezani podaci, vikpodaci,Infoteka, metapodaci časopisa
    ... the other one for machines, which enables numerous applications in the domain of natural language processing. Let’s mention some of them: text classification, indexing, text analysis, summarizing, nor- malizing, linking, etc. Another important feature is multilingual support, making it possible to link ...
    ... language registered in Wikimedia resources, which, in turn, opens up the possibilities for numerous applications, from automatic translation and classification of multilingual documents, to analysing web and social media content. 3 Automated Wikidata entry The entry of individual pieces of data is often ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... 20(97)00079­9 VASSILEV, S. & VASSILEVA, C. (2009): A new approach for the combined chemical and mineral classification of the inorganic matter in coal. 1. Chemical and mine­ ral classification systems.– Fuel, 88, 235–245. doi: 10.1016/j.fuel.2008.09.006 VASSILEV, S.V., ESKENAZY, G.M. & VASSILEVA, ...
    ... VASSILEVA, C., BAXTER, D. & ANDERSEN, L K. (2009): A new approach for the combined chemical and mineral classification of the inorganic matter in coal. 2. Potential applications of the classification systems.– Fuel, 88, 246–254. doi: 10.1016/j.fuel.2008.09.005 VASSILEV, S.V., VASSILEVA, C.G., KARAYIGIT ...
    ... geochemical and economic classifications of rare earth elements and yttrium (REY; SEREDIN, 2010; SE­ REDIN & DAI, 2012). The three­fold geochemical classification, which divides REY into light (LREY – La, Ce, Pr, Nd, and Sm), medium (MREY – Eu, Gd, Tb, Dy, and Y), and heavy (HREY – Ho, Er, Tm, Yb, and ...

  • A WordNet Ontology in Improving Searches of Digital Dialect Dictionary

    Miljana Mladenović, Ranka Stanković, Cvetana Krstev (2017)
    In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...
    ... obtain all equivalent synonymous words in the dialect. 5 Evaluation The evaluation of the proposed method can be observed as the evaluation of a classification task, so we have performed an estimation of the accuracy of pair- ing the digital dictionary entries with the standard language entries comparing ...
    ... another from e-dictionaries of the standard language — for each verb extracted from a dialect dictionary. The evaluation of the method, treated as a classification, compared results obtained from the system with data provided by humans. The accuracy measure was acc=89.7%. In future work, we will experi- ment ...

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX
    ... metadata on each article <Document>: - description metadata – authorship and title proper – author name, affiliation, e-mail, article title and its categorization as well as pagination within the issue, and - content metadata – abstract, keywords, and expert classification according to Universal ...
    ... text of a specific document, he/she can obtain it by clicking on the “metadata” link shown in the leftmost column in Figure 6. This opens the metadata window (Figure 7) showing the document metadata in both languages and offering further links to full texts of the document in both languages (pdf) ...
    ... es, are formatted and presented to the user. The concordances are preceded by information identifying the document they originate from, and a link to summary metadata for this document in both languages . 1712 Figure 3. Bibliša+LeXimir UML component model 4. Supporting resources ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... format is growing with the rapidly expanding availability of various texts on the web. First and foremost, they are indispensable in information an document retrieval systems. In addition to monolingual resources, machine translation systems and cross- language information retrieval emphasize the need ...
    ... structure through more elaborate semantic relations such as holonymy/meronymy (part of) and the like, thesauruses are primarily aimed at facilitating document retrieval and achieving consistency in indexing documents stored in a database. Hence, they provide assistance to persons who associate terms or ...
    ... the hypernym/hyponym relation between the broader and the narrower concept, respectively. Hence, a taxonomy in essence offers a hierarchical classification of concepts, in addition to the terms that describe them, and the definitions that explain them in more detail. Thesauruses offer and even ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... n retrieval and extraction [26]. Several successful applications of Serbian language resources and tools in tasks related to document indexing, retrieval and classification have been reported. A system for PhD dissertation metadata and full-text search was developed at the University of Novi Sad. It ...
    ... gical dictionaries and the WordNet—for text categorization. Mladenović and associates [18] use the same resources for document-level sen- timent polarity classification using maximum entropy modeling. Zečević and Vujičić-Stanković [27] apply various language-identification tools to distinguish ...
    ... representation of the document content is generated, formally referred to as the document surrogate, with the aim of increasing document retrieval efficiency, through a better matching of user needs and retrieval results. Document surrogates typically consist of metadata about the document, such as title, ...

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... other machines, checking the ground stability, etc. The classification of the auxiliary workings which are done using the dozer in the big open-cast coal mines is shown schematically in Figure 1 [14]. Figure 1. Auxiliary working classification. They are classified according to different criteria ...
    ... bucket-wheel excavator, shaping slopes, cleaning the benches, pulling operating stations or other machines, checking the ground stability, etc. The classification of the auxiliary workings which are done using the dozer in the big open-cast coal mines is shown schematically in Figure 1 [14]. Energies 2019 ...
    ... light), • the strength of the machine (very strong, strong, medium strength, low strength, and very low strength), Figure 1. Auxiliary working classification. They are classified according to different criteria, most commonly according to [15]: • towing capacity (very heavy, heavy, of medium weight ...

  • Development of terminological resources for expert knowledge: a case study in mining

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić (2015)

  • Production information system of the Pljevlja coal mine

    Božo Kolonja, Ranka Stanković, Filip Vuković (2018)

  • 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 ...
    ... the similarity between the query and the document is ranked based on the sum of weights for all words in the query. Document in Figure 1 is about a project that deals with gold. When search- ing with the keyword zlato ‘gold’ the old system ranks the document as 125th with general search and as 84th ...
    ... related to Information Retrieval (IR) are the presentation of document content, the presentation of information needs and the comparison of these two representations. Presentation of documents as a rule contains meta- data about the document, such as title, abstract, location or, in case of indexing of ...
    ... primary key of the document in the database. If the search is performed by scanning textual documents, then their additional representation is not required. In order to increase efficiency, es- pecially in the case of large collections, a formal representation surrogate of each document is usually formed ...

  • Uticaj geološke neizvesnosti u razvoju rudarskih projekata

    Petar Marković, Dejan Stevanović, Mirjana Banković (2023)
    Rudarstvo je industrija koja se nosi sa različitim vrstama neizvesnosti i rizika zbog svoje prirode i specifičnosti. Neizvesnost u rudarstvu može poticati iz različitih izvora i uticati na različite aspekte rudarskih projekata. Kao jedan od dominantnih faktora, ističe se geološka neizvesnost. Geološka neizvesnost igra ključnu ulogu u rudarstvu i može značajno uticati na procenu resursa i rezervi, planiranje eksploatacije, ekonomsku isplativost i upravljanje rizicima. Ova neizvesnost se ne može eliminisati, ali se uz primenu adekvatnih standarda i zakona može ...
    ... Metallurgy, and Exploration, USA) • „PERC Code (Pan-European Reserves & Resources Reporting Committee) i • „ UNEC (United Nations Framework Classification for Resources, 2009/2019) Klasifikaciju mineralnih resura i rezervi se u domaćoj praksi sprovodi se na osnovu Pravilnika o klasifikaciji i ...
    ... an Institute of Mining and Metallurgy. [8] Emery X., Ortiz J., Rodriguez J. (2006). Quantifying Uncertainty in Mineral Resources by Use of Classification Schemes and Conditional Simulations. Mathematical Geology , 38 (4), 445-464. [9] G. Lagos et al. (2011). Robust planning for an open-pit mining ...