Претрага

Упит dcterms_subject_txt:seismic effects of blasting

2830 items

  • 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
    ... 15. Summary of correlation of the Bajocian-Early Tithonian &IŠC curves from the Križna Unit of the Tatra Mountains. mainly because of insufficicnt biostratigraphic data. In the interval 84–95 m of the lower part of the grey nodular lime- stones, the Š IŠC values reach a minimum of about 1.1% ...
    ... y. The calcium carbonate content of 376 rock samples was estimated by means of a calcimetre by Eijkelkamp, which Works in accordance with the method of Schcibler. The ana- lysis of CaCOy3 content was conducted at the Institute of Geo- logical Sciences of the Jagiellonian University in Krakow ...
    ... slope of Pošrednia Kopka Hill (Fig. 1; Table 1). It is composed of three partial sections (L, Lb and Ld), with a measured thickness of 66 m (Fig. 4A). The lowermost part of the section (L) is exposed in a small rocky cliff on the southern slopes of Pošrednia Kopka Hill. The middle part of the ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... Serbia). MSc thesis, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, 108 pp. (in Serbian). Gajić, V. (2014). Sedimentology of Upper Cretaceous of the central part of the Vardar zone. Ph.D. dissertation, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia ...
    ... dome of Beli Kamen (Mt. Rudnik, Central Serbia) – the example of a specific interaction of lamprophiric and granitoid magma. In S. Karamata & S. Janković (Ed.), Geology and Metallogeny of the Dinarides and the Vardar zone, (pp. 255–267). The Academy of Sciences and Arts of the Republic of Srpska ...
    ... and Geological Survey of Hungary, Columbus utca 17-23, Budapest 1145, Hungary 3 Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djušina 7, Belgrade 11000, Serbia 4 Department of Geophysics, Faculty of Mining and Geology ...

  • Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević (2017)
    ... shaped today’s relief of the area (MAROVIĆ et al., 2007). °e Torlak hill repre- sents horst structure with a core of Mesozoic rocks and wings made of Badenian and Sarmatian sediments (EREMIJA, 1977; STEVANOVIĆ, 1970). Downstream of the Avala – Belgrade road, in the middle course of the Rakovica stream ...
    ... The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 57 7th International Workshop | Neogene of Central and South-Eastern ...
    ... , №16-05-01032) and RSF (№17-17-01146). GREBENYUK, L.V. (2004): Magnetostratigraphy of Neogene sediments of the Southern European Russia and the Pre-Caucasus. Unpubl. PhD °esis, Faculty of Geology, University of Saratov, 181 p. HILGEN, F.J., LOURENS, L.J. & VAN DAM, J.A. (2012): °e Neogene Period ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names Branislava Šandrih University of Belgrade Faculty of Philology Belgrade, Serbia branislava.sandrih@fil.bg.ac.rs Cvetana Krstev University of Belgrade Faculty of Philology Belgrade, Serbia ...
    ... different levels of information: name type, role, gender. We wanted to examine the recognition of NEs on different level of details. Therefore, on the basis of the gold standard, we developed its four versions by 4The evaluation was performed as a homework by several generations of students of Library and ...
    ... scored by the ratio of the number of characters common to both anno- tations divided by the total number of charac- ters covered by at least one of the two anno- tations. Figure 1: The evaluation of SPACY NER, SRP- NER and STANFORD NER on STUDENTS-GOLD 5 Discussion The results of three NER systems, ...

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... University of Belgrade cvetana@matf.bg.ac.rs Ranka Stanković Faculty of Mining and Geology University of Belgrade ranka@rgf.bg.ac.rs Duško Vitas Faculty of Mathematics University of Belgrade vitas@matf.bg.ac.rs Svetla Koeva Dep. of Computational Linguistics Institute ...
    ... dictionary consists of app. 1,260,000 entries [7]. 2.3 Semantic Networks - Wordnet Semantic networks, seen as one important node in the hierarchy of ontologies, are used more and more in various phases of the automatic analysis of text. The tool WS4LR expects them to be in the form of wordnets, that ...
    ... with the study of toponyms in French with aim of appropriately processing proper names in natural language applications [16]. This work has been pursued by development of a Serbian version, which finally led to the design and construction of a relational multilingual dictionary of Proper Names ...

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... dictionary. The main class of the core of the lexicon model is the class LexicalEntry, representing a unit of analysis of the lexicon, which encompasses a set of inflected forms that are grammatically related, and a set of base meanings that are associated with all of these forms (Figure 2). A lexical ...
    ... designed and implemented for the purpose of further development and management of morphological electronic dictionaries of Serbian (SMD), presented in more details in Section 3.. However, with the growing number of dictionary developers, and given the va- riety of dictionaries and information stored in ...
    ... LeXimir, a tool for development and maintenance of e- dictionaries enabled development of Serbian morphologi- cal dictionaries in the past decade. However, with the en- hancement of dictionaries and enrichment of their content some serious drawbacks of this tool became evident. Be- sides being a desktop ...

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)

    Nikita Bragin, Nevenka Đerić (2020)
    Radiolaria, Dinarides, Jurassic, stratigraphy, Serbia
    ... Theocapsomella sp. R Figure 4. A lithological column of the lower part of the Djokov Potok section (Ljubiš Formation). The numbers of units are shown to the left of the column. Positions of samples with radiolarians are indicated on the right of the column by arrows. 1 – radiolarites and mudstones; ...
    ... Formation on the western slope of Vis Mountain. According to GAWLICK et al. (2017) the preserved part of the Ljubiš basin represents a more proximal part of the basin and the thickness of this basin fill is at least 400 m. In the currently uninvestigated most proximal parts of this basin the authors expected ...
    ... important for the reconstruction of tectonic motion and the arrangement of palaeo­oceanic basins and continental blocks. Due to the highly complicated structure of this territory, each palaeontological da­ tum from radiolarite deposits and from carbonate clasts of the intercalated turbidites is ...

  • 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

  • Multiword Expressions between the Corpus and the Lexicon: Universality, Idiosyncrasy and the Lexicon-Corpus Interface

    Verginica Barbu Mititelu, Voula Giouli, Kilian Evang, Daniel Zeman, Petya Osenova, Carole Tiberius, Simon Krek, Stella Markantonatou, Ivelina Stoyanova, Ranka Stankovic, Christian Chiarcos (2024)
    Predstavljamo trenutne aktivnosti na definisanju interfejsa leksikona i korpusa koji će služiti kao referenca u prikazu polileksemskih jedinica - višečlanih izraza - (različitih tipova - imenskih, glagolskih, itd.) u specijalizovanim leksikonima i povezivanju ovih unosa sa njihovim pojavljivanjima u korpusima. Konačni cilj je korišćenje ovakvih resursa za automatsko identifikovanje višečlanih izraza u tekstu. Uključivanje nekoliko prirodnih jezika ima za cilj univerzalnost rešenja koje nije usredsređeno na određeni jezik, kao i prilagođavanje idiosinkrazijama. Raspravljaju se izazovi u leksikografskom opisu višerečnih ...
    multiword expression lexicon, corpus, proof-of-concept lexicon encoding

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... (LIS-corpus+); 2. The list of domain terms for the source language (Input ii) is (a) the source language part of LIS-dict including SWTs; (b) the output of the extractor Eng-TE applied to the source language part of the aligned input corpus; 3. The extraction of the set of MWTs in the target language ...
    ... problematic characteristics of this expression are (1) syntactic anomaly of the part-of-speech (POS) sequence preposition + con- junction + adjective, (2) non-compositionality: semantics of the whole that is unrelated to the individual pieces, (3) non-substitutability of synonym words (e.g., by and big) ...
    ... 310 x x Additional filtering of results obtained by GIZA++11 I Number of the aligned chunks after initial filtering using English terms (Processing ii): (S(align.chunk) ∼ S(term)), where the list of English terms depends on the choice of parameter 1 (the English part of LIS- dict or obtained from the ...

  • Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)
    geochronology, zircon, provenance
    ... Congress of Geologists of the Republic of North Macedonia RECONSTRUCTION OF THE TETHYS' WANING IN THE BALKANS: NEW INSIGHTS FROM UPPER-CRETACEOUS IGNEOUS FORMATIONS AND ZIRCON PROVENANCE DATA Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković University of Belgrade ...
    ... histories of these regions. The presence of Permotriassic zircons in thc Upper Cretaceous sediments of the Sava-Vardar Zone and thcir absence further cast challenge the notion of a vast Sava (Tethys) Ocean during the Cretaceous. ACKNOWLEDGEMENT This research is financed by the Science Fund of Serbia ...
    ... [ДР РГФ] Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data | Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković | Fifth Congress of Geologists of the Republic of North Macedonia | 2024 | ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... previously derived from then latest version of SMD (Utvić, 2011). TT11 tagset consists of 16 tags, most of them acquired from SMD as labels for major Parts-of-Speech (Table 3 column T11). TT11 was used to annotate SrpKor2013, current version of SrpKor – Corpus of Contemporary Serbian.4 As pointed out ...
    ... primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation ...
    ... dictionaries, MULTEXT-East and Universal Part-of-Speech tagset. The trained models will be used to publish the new version of the Corpus of Contemporary Serbian as well as the Serbian literary corpus. The performance of developed taggers were compared and the impact of training set size was investigated, which ...

  • Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis

    Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović (2017)
    U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...
    Omeka, Wordnet, pretraga punog teksta, morfološka i semantička pretraga teksta, proširenje upita
    ... University of Belgrade – Faculty of Mining and Geology Aleksandra Tomašević University of Belgrade – Faculty of Mining and Geology Miljana Mladenović PhD eVox Solutions Ranka Stanković PhD University of Belgrade – Faculty of Mining and Geology Nikola Vulović University of Belgrade – Faculty ...
    ... texts derived from journals of The Academy of Criminalistics and Police Studies, Criminal code of Serbia, the “Tara” and “Reiss” conferences, and from some of PhD dissertations related to this field of research. After text processing, a corpus containing over 5500 pages of plain text is created and ...
    ... LINGUISTICS The linguistic study of forensic texts is a part of the field of Natural Language Processing, which includes text types classification and syntax and semantic analysis of texts written in a natural language. Various texts are subject of the study: Acts of Parliament (or other law-making ...

  • Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)

    Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...
    ... obtained by the OS and the CS pyrolysis. The distribution of n-alkanes (C14–C35) in LPs differs from those in bitumen of raw samples, which is reflected through the increase of lower homologues. In addition to the fact that the distribution of n-alkanes depends on maturity changes that particularly ...
    ... material. The prevalence of lower homologues in LPs is consistent with the predominantly algal origin of organic matter (OM) (Gajica et al., 2017). The n-alkane distributions in all LPs are characterized by uniform abundances of odd and even homologues, resulting in a reduction of the CPI values (~ 1) ...
    ... initial bitumen of both raw samples, the pristane/phytane (Pr/Ph) ratio is similar (< 0.4). In LPs from the OS the values of Pr/Ph are 1.23 and 1.74. That might be explained by a preferred release of pristane than phytane from isoprenoid moieties during slight thermal treatment of kerogen (Larter ...

  • Advantages and challenges in presenting mathematical content using EDX platform

    Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone (2016)
    ... PLATFORM MARIJA RADOJIČIĆ University of Belgrade, Faculty of Mining and Geology, marija.radojicic@rgf.bg.ac.rs IVAN OBRADOVIĆ University of Belgrade, Faculty of Mining and Geology, ivan.obradovic@rgf.bg.ac.rs RANKA STANKOVIĆ University of Belgrade, Faculty of Mining and Geology, ranka.stankovic@rgf ...
    ... in Python. All these types of task work with edX tags which annotate the type of content: a question, a response, a possible response and etc. Also there are possibilities for customizing the weight of each problem, number of attempts, feedbacks, randomization of offered answers and time between ...
    ... clear structure of course material, which is in line with the didactic principle of systematization and gradualism in the teaching process. Didactical principle of awareness within the teaching process is represented through the tasks, where activity of users and some kind of interaction between ...

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite