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Упит dcterms_subject_txt:rock breakage by explosives

1093 items

  • 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. ...
    ... often encountered by students of a foreign language can be solved by explaining terms not known in a foreign language by expressing the same con- cepts in a language they are familiar with. Two other ways of search (search by creating a logical query over metadata and browsing of terms by a first letter) ...
    ... expand and complementit. Tools were developed to enable search of terms in three ways: (a) search by a term, (b) search by logical queries created over metadata, (c) terms browsing by the first letter. Search by a term implies that the user types a word or its part in the dialect. He/she can specify whether ...
    ... The method was applied and evaluated on verbs and a group of nouns derived from verbs (verbal nouns). We compared results obtained by the system with those produced by humans and achieved the accuracy of 89.7%. Keywords: dialect dictionary, ontology, WordNet, e-dictionary, South Serbian dialect 1 ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... The initial set of features was inspired by Kilgarriff et al. (2008) and Kosem (2017), and guided by recapitulation of features given in Kosem et al. (2019). 3.2 Feature extraction Feature extraction is enabled by the development of a web service inspired by the work described in Kilgarriff et al ...
    ... three volumes: 2nd, 18th and 20th. Dictionary entries are represented by lexical entry elements in the database, with one or more lexical senses (units) that are further illustrated by examples. Each example is followed by information about the bibliographic source, the author, and optionally about ...
    ... in such a case, the source is marked by the abbreviation of the editor’s name. Editor’s intuition may and should be supported by the corpus data. It is common for lexicographers to look for examples in the corpus of contemporary Serbian (SrpKor, developed by D. Vitas and a group of collaborators ...

  • Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content

    Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)
    Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...
    Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugs

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... that are detected by XRPD analyses in samples obtained from fructose may be an explanation for lower specific surface areas in comparison with glucose samples. This is in agreement with results published by Mopoung et al. [59], where activated carbon was prepared from Tamarind Seeds by activation with ...
    ... adsorption obtained by samples activated with LiOH may be consequence of very low mesopore specific surface area. Similar dependence between mesopores specific surface and MB removal have shown by other authors [59] for adsorption of MB on activated carbon prepared from Tamarind Seeds by activation with ...
    ... channels and the vacancies does not significantly affect the entire process. Similar conclusions were made by other authors for removal of methylene blue by mango seed kernel powder [68] or by activated carbon developed from Ficus carica bast [38]. For applied experimental conditions it was not possible ...

  • 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
    ... Figure 1. The HTML view of the aligned Bulgarian- Serbian text Users queries can be semantically expanded by wordnets and by Prolex database. WS4LR obtains semantic expansion of a query by means of wordnet of the first language (Serbian wordnet – SWN in the case of our examples), selecting all ...
    ... глава is presented in Figure 2. The semantic expansion is obtained by checking the box “Semantic extension” in this form and by choosing the appropriate resource (Wordnet in this case), while the bilingual expansion is obtained by checking the box “Another language extension”. In the same form ...
    ... the Serbian keyword barka ‘boat’ and is further expended by the Serbian synset {barka:1, čamac:1, čun:1} and Greek corresponding synset {βάρκα:0, λέμβος:0}. Figure 11 represents the first results retrieved by such an expanded query by Google. Figure 10. Bilingual query expansion with WS4QE ...

  • ‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions

    Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban (2020)
    Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...
    Firing, Glaze, Traditional ceramics, Provenance studies, Augite

  • 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
    ... out that 11,091 synsets (55%) had the same number of literals, that the number of literals in 6,107 synsets (30%) differed by 1, in 1,834 synsets (9%) by 2, in 682 for (3%) by 3 literals, whereas an even greater difference in the number of literals was found in the remaining 507 (3%) synsets. For ...
    ... after translation by our Translation API based on Google Language Translation API, into: ENG30-08331011-n | sud koji je nadležan za pravičnost | kancelarija ; sudski ured If a Serbian translational equivalent for a PWN literal obtained by Google Translation is not of- fered by any other bilingual ...
    ... different languages is closely related to the task of pairing their word senses. This approach was followed by Matuschek and Gurevych (2013) who solved the word sense alignment (WSA) task by pairing senses with the same meaning from different lexical-semantic resources. Besides alignment with a developed ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • 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
    ... February 2023 Copyright: & 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:/ / creativecommons.org//licenses/by/ 4.0/). Faculty of Mining, and ...
    ... higher to lower temperatures by XRPD and SEM methods. Samples from the Drenjak locality showed almost ideal stoichiometric composition and were further analysed by analytical TEM. The main conclusions, based on our experimental observations and interpretation, are: - By studying, arsenopyrite from ...
    ... 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 ...

  • Assessments of effects of implementation of strategic plans for development of Belgrade District heating system

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić (2020)
    The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...
    Daljinsko grejanje, LEAP, Primarni energetski faktor, Uvozna zavisnost, CO2 emisija

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... filed, are represented by the class Koncept. The hypernym/hyponym relation in the model is implemented by involution, which means that a hyponym can appear only once in the resource hierarchy, with only one hypernym above it. Other semantic relations between concepts are enabled by the RelacijeTermina ...
    ... these types (except the simplest, indexes) is a more complex extension of the preceding one, as illustrated by the semantic scale in Figure 1, which is based on the ontological spectrum as defined by [1] and [7]. The simplest form of terminological resources is an index, which is basically a list of terms ...
    ... linked by lists of paired terms. On the next level of semantic scale of terminological resources, relationships 3 http://geoliss.ekoplan.gov.rs/term 2 between terms are introduced, or more precisely, between concepts represented by specific ...

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... definition comes first, followed by the definition by substitution with related words; ex: безвлашће… стање без државне власти, анархија, безакоње (powerlessness, ... state without power of a state, anarchy, lawlessness). The closest senses can be separated just by semicolons, thus representing a single ...
    ... education). The biology domain is covered by seven textbooks: one for primary school, four for high school, and two for agricultural professional / vocational school; history domain is represented by four primary school textbooks; computer science is represented by one primary school textbook and tree high ...
    ... definition or description and general-knowledge crossword question answers. Inspired by the work of Noraset et. al (2017), Bosc & Pascal (2018), our model will be improved by learning to compute word embeddings by processing dictionary definitions and trying to reconstruct them. We will use Dict2vec ...

  • 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

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... new dimension in OER by blending two major sources of knowledge: the academia and the enterprise. It thus contributes to the important task of preparing university students for their future jobs, but also enables them to improve their academic knowledge after graduating, by offering them a live-long ...
    ... nodes. Section 2 of this paper outlines the main goals to be achieved by the proposed approach, whereas the main features of the platform are given in Section 3. Section 4 is dedicated to its language support system, followed by conclusions in Section 5. 2 Objectives to be accomplished The ...
    ... project is to develop and implement guidelines and procedures for quality assurance of OER in WB according to best practice offered by the EU, and provide training by qualified OER trainers for both HEI and enterprise staff involved in production of OER materials. As its third objective the project ...

  • 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
    ... of texts and correction of alignment were done by Jelena Andonovski, PhD student at the Faculty of Philology. This research was supported by the CESAR (Central and South-East European Resources) project (ICT PSP programme, no. 271022) and by Serbian Ministry of Education and Science under ...
    ... 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 ...
    ... unnecessary slowdown caused by additional layers for interpretation. Native XML databases (abbr. NXD) handle XML documents as their basic logical units, pretty much the same way as relational databases handle rows in tables. Data in NXDs are manipulated only indirectly, by means of database and XML ...

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... al fluid, probably caused by the boiling process proposed formerly by Cvetković et al. (2016). Further, Fe-rich garnets grow rapidly by advective metaso- matism, at higher water/rock ratios (W/R), from magmatic- derived fluids, while Al-rich garnets are formed by diffusive metasomatism, at low ...
    ... fluids. Following Gaspar et al. (2008) Al-rich garnets, which are anisotropic and twinned, form by prolonged interaction of pore fluids with the host rock, leading to a system buffered by the rock composition. They are commonly LREE depleted and HREE enriched, displaying weak positive or negative ...
    ... of REE were stable and probably buffered by mineral disso- lution and reaction in the country rock. During the second stage and andradite-rich phase growth, which has been initiated by boiling process, the fluid composition was extremely controlled by the oxidation state, W/R ratio and salinity ...

  • Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović (2022)
    Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... Površinska povreda ‘surface injury’ was ranked lower by CValue (27) than by Freq (17) because it is part of two other MWUs with three components. One of them, površinska povreda potkolenice ‘surface lower leg injury’ was ranked higher by CValue (867) than by Freq (1660), and as this term is more common ...
    ... of graphs is: AXN, 2XN (a noun preceded by a word that does not inflect in the MWU), N2X (a noun followed by a word that does not inflect in the MWU), NXN. Thus, two MWU forms mašine taložnice and korita trake ‘belt troughs’ would be both extracted by graph 03 (structure N2X) and graph 06 ...
    ... common in the mining corpus than in SrpKor, it was ranked higher by LLR (1544) and Keyness (1521) than by Freq (1660). A similar example is vibracija šake ‘hand vibration’ and MWUs that contain it. On the other hand, električna energija ‘electrical energy’ is more frequently mentioned in SrpKor ...

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... composition (fig. 1): – long-term variability as measured by trends of monthly or longer duration, and – operational variability is generally measured by short period inter-train variability around the long-term trend and is little affected by the long-term variability. The objectives of the operational ...
    ... layers can be described by the matrix: Xm Xm 0 *X where m is the number of stocked layers, / — the length of the bed, and n = //d. The volume of the material reclaimed from layer i in cut is denoted by v,,, The average grade of material reclaimed in whole cut 7 is then computed by the formula: Ny Xi xX ...
    ... and homogenization piles and geostatistical simulations are described [6, 7]. US power stations have experienced reduction in SOx emis- sions, by up to 20%, by homogenizing coal feeds to power plants [8]. Kriging technique is a very good estimator, but it is not adequate to predict the uncer- tainty ...