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219 items

  • Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

    Jelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić (2011)
    A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and ...
    комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својства

  • Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine

    Lidija Radovanović, Dušan P. Malenov, Marko V. Rodić, Aleksandar Kremenović, Jelena Rogan (2021)
    Orange single crystals of new polymeric cobalt(II) complex {[Co(bipy)(H2O)4]2[Co(μ-mell)(H2O)2]·10H2O}n, 1, were synthesized by slow evaporation method at room temperature (bipy = 2,2′-bipyridine, mell = hexaanion of mellitic acid) and its crystal structure was determined by single-crystal X-ray diffraction. The complex 1 was characterized based on elemental analysis, FTIR spectroscopy and thermal (TG/DTA) analysis followed by computational analysis of noncovalent interactions and quantum chemical calculations of interaction energies. In 1, two crystallographically different Co(II) atoms adopt a deformed octahedral geometry, ...
    Inorganic Chemistry, Organic Chemistry, Spectroscopy, Analytical Chemistry

  • Waste rocks and medieval slag as sources of environmental pollution in the area of the Pb-Zn Mine Rudnik (Serbia)

    Alena Zdravković, Vladica Cvetković, Kristina Šarić, Aleksandar Pačevski, Aleksandra Rosić, Suzana Erić (2020)
    The new geochemical and mineralogical data of soil and water from the Pb-Zn Rudnik Mine area (central Serbia) reveal that the areas close to the mining sites and those located remotely from them are both affected by significant pollution by toxic elements, especially As, Pb, Ni and Cr. We, therefore, propose that two main sources are generally responsible for the current state of pollution in this area. The first is the material from waste rock dumps (WRDs) in which ...
    распадање сулфида, микроелементи, пиротин, загађење земљишта, Рударска активност, распадање шљаке

  • Synthesis, characterization, biomolecular interactions, molecular docking, and in vitro and in vivo anticancer activities of novel ruthenium(III) Schiff base complexes

    Milica Međedović, Aleksandar Mijatović, Rada Baošić, Dejan Lazić, Žiko Milanović, Zoran Marković, Jelena Milovanović, Dragana Arsenijević, Bojana Stojanović, Miloš Arsenijević, Marija Milovanović, Biljana Petrović, Ana Rilak Simović (2023)
    In order to discover new anticancer drugs, novel ruthenium(III) complexes [Ru(L)Cl(H2O)], where L is tetradentate Schiff base bis(acetylacetone)ethylendiimine (acacen, 1), bis(benzoylacetone)ethylendiimine (bzacen, 2), (acetylacetone)(benzoylaceton)ethylendiimine (acacbzacen, 3), bis(acetylacetone)propylendiimine (acacpn, 4), bis(benzoylacetone)propylendiimine (bzacpn, 5) or (acetylacetone)(benzoylaceton)propylendiimine (acacbzacpn, 6), were synthesized. The complexes 1 – 6 were characterized by elemental analysis, molar conductometry, and by various spectroscopic techniques, such as UV–Vis, IR, EPR, and ESI-MS. Based on in vitro DNA/BSA experiments, complexes 2 (bzacen) and 5 (bzacpn) with two aromatic rings showed ...
    Inorganic Chemistry, Biochemistry

  • Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process

    Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic (2022)
    This paper presents a methodology for evaluating and ranking different bucket wheel excavators (BWE) for determining which machine should enter in the process of revitalization and modernization. Various multicriteria methods are used. Combining them achieves the best effect when choosing BVE for the modernization process. AHP, TOPSIS, VIKOR, and PROMETHEE methods are used. The hybrid models are developed from the multi-criteria decision making (MCDM) methods and they are used to evaluate the basic indicators that characterize the operation of ...
    višekriterijumsko odlučivanje, rotorni bageri, modernizacija, ekspertska analiza

  • Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy

    Paul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries (2022)
    This work investigates bituminite (amorphous sedimentary organic matter) in Upper Jurassic Kimmeridge Clay source rock via confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). These petrographic tools were used to provide better understanding of the nature of bituminite, which has been historically difficult to identify and differentiate from similar organic matter types in source rocks. As part of an International Committee for Coal and Organic Petrology (ICCP) working group, an immature (0.42% vitrinite reflectance), organic-rich (44.1 wt% ...
    Битуминит, Kонфокална ласерска скенирајућа микроскопија, Mикроскопија атомских сила, Органска петрологија, Термичка зрелост

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... conceptual model for conduit flow dominated karst aquifers. Karst water resources. IAHS Publ. No.... There are more references avoilable in the full text version of this article. ...

  • The Late Devonian contraction along the Precaspian Basin north margin: Transpressional range building in the intracratonic domain

    Novak Novčić, Marinko Toljić (2023)
    The evolution of intraplate sedimentary basins located in the vicinity of an active convergent plate boundary is often controlled by the collisional dynamics of the adjacent orogen. The transfer of compression from the orogen to the platform's interior results in the formation of complex structural geometry and kinematics that often reactivate older crustal faults, focus far-field stresses and control the evolution of associated sedimentary basins. One place where this localisation can be optimally understood is the Precaspian Basin, situated ...
    Intrakratonske deformacije, transpresija, kosa kompresija, krustalni rasedi, intrakratonski transfer stresa, kontrakcioni blokovi

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... that end, content publishers insert machine readable information into the code of web pages, which helps search engines interpret the sense of the text on those pages. One example of such tagging for a page containing a research paper is:
    ...
    ... To that end, content publishers insert machine readable information into the code of web pages, which helps search engines interpret the sense of the text on those pages. One example of such tagging for a page containing a research paper is:
    ...
    ... and translation in English, Russian and other languages[16].If the resource is HTML based, an additional possibility is to link key terms in the text with dictionary entries via web services, thus providing the learner with additional explanations and translations to other languages. Furthermore ...

  • Употреба веб платформе Омека за дигиталне библиотеке из домена рударства

    Александра Томашевић, Биљана Лазић, Далибор Воркапић, Михаило Шкорић, Љиљана Колоња (2017)
    У овом раду биће представљена Омека, веб платформа за приказивање дигиталних колекциjа и систем за управљање њиховим садржаjем. Њену примену у области техничких наука, а конкретно у области рударства, приказаћемо на примеру дигиталне библиотеке ROmeka@RGF. За Омеку смо се определили првенствено због чињенице да jе jедноставна за коришћење, има обимну пратећу документациjу и не захтева уско специфичне информатичке вештине што jе чини приступачном за већину корисника, а нарочито за рударске инжењере, коjима jе ова дигитална библиотека првенствено намењена. Документа ...
    Омека, дигиталне библиотеке, рударство
    ... у Вирџиниjи. Припада 2 http://jerteh.rs/biblisha/ListaDokumenata.aspx?JCID=2&lng=en 3 http://bibliotheque.clermont-universite.fr/glangeaud/ 4 TEI: Text Encoding Initiative http://www.tei-c.org/index.xml 5 Content Management System (CMS) 6 Roy Rosenzweig Center for History and New Media (RRCHNM), h ...
    ... Harvesting, https://www.openarchives.org/pmh/ Инфотека, год. 17, бр. 2, 2017. 33 Томашевић А. и др., „Употреба веб платформе Омека...“, стр. 27–51 PDF Text омогућава оптичко препознавање карактера текста13, његову екстракциjу из PDF формата и претраживање. Уколико текст ниjе очитан на задовољаваjући начин ...
    ... синхронизовање на облаку. У дигиталноj библиотеци ROmeka@RGF креиран jе контролисани речник аутора, чиме су обезбеђени доследан унос и лакше претраживање. Text Analysis повезуjе дигиталну библиотеку са Watson Natural Lan- guage Understanding14 и Mallet15 како би се омогућила анализа корпуса креираног од обjеката ...

  • Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities

    Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov (2024)
    Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...
    полилексемске језинице, именовани ентитет, вишезначност значења речи, складиште смисла, LLOD

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... the BAEKTEL platform, machine readable information is inserted into the code of web pages, which helps search engines interpret the sense of the text on those pages, but also other metadata on OER content according to LRMI. Keywords: E-Learning, Open Educational Resources, LRMI, Microtagging ...
    ... providing a vocabulary for semantic markup. The most prevalent of these standards are Microformats, which use style definitions to annotate HTML text with terms from a fixed set of vocabularies; RDFa which is used to embed any kind of RDF data into HTML pages, and Microdata, a recent, currently ...
    ... find the right web pages. The machine readable information inserted into the code of web pages helps search engines interpret the sense of the text on those pages. 4. LRMI METADATA MANAGEMENT LRMI is an extension of schema.org. The main rationale for the approach fostered by IMS GLC is ...

  • Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication

    Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović (2023)
    Ammonites, Taxonomy, Lower Berriasian, Getic, Northern Tethys, Serbia
    ... 6G, 9A-C, 9D, E. 2012 Psudosubplanites fasciculatus Bogdanova et Arkadiev; Arkadiev and Bogdanova, p. 178, pl. 14, fig. 2a, b, text-fig. 64:7, figs. 3a, b, 4, text-fig. 63:4. 2016 Pseudosubplanites fasciculatus Bogdanova et Arkadiev; Hoedemaaeker et al., p. 118, pl. 1, figs. 4-9. Material ...
    ... jacobi Mazenot); non pl. 5, fig. 8 (= Berriasella oppeli Kilian). 1985 Berriasella (Pseudosubplanites) lorioli (Zittel); Tavera Benitez, p. 261, text-fig. 20/I, pl. 36, fig. 10. 2005 Berriasella (Pseudosubplanites) lorioli (Zittel); Klein, p. 158. 2005 Pseudosubplanites lorioli (Zittel); Bogdanova ...
    ... Bogdanova and Arkadiev, p. 493, figs. 4D, 5C, 6A, B, 7A—1. 2012 Pseudosubplanites lorioli (Zittel); Arkadiev et al., p. 168, pl. 12, figs. 3—7, text-figs. 63—3, 63—4. 22013 Pseudosubplanites lorioli (Zittel); Szives and Fozy, p. 313, pl.9, fig. 3. Cretaceous Research 151 (2023) 105623 2016 ...

  • Чији је пример? Анализа лексичких обележја на примерима Речника САНУ

    Бранислава Б. Шандрих, Ранка М. Станковић, Мирјана С. Гочанин (2019)
    У овом раду поставља се питање: да ли се може утврдити ко је аутор неког текста уколико се анализирају искључиво његова лексичка обележја? Како бисмо покушали да добијемо одговор на ово питање, посматрали смо примере у оквиру речничког чланка појединачне лексеме Речника САНУ, који су забележени у пет томова (и то: I, II, XVIII, XIX и XX). Сваки пример је преузет из неког извора на шта упућују скраћенице, наведене у заградама. Од преко 5.000 понуђених извора, определили смо се ...
    идентификација ауторства, лексичка обележја, анализа обележја, примери Речника САНУ
    ... текста (енгл. Text Summarization), лексичког раш- члањавања (енгл. Dependency Parsing), обележавања текста према врсти речи (енгл. Part-of-Speech Tagging), лематизације (енгл. Lemmatization), препозна- вања именованих ентитета (енгл. Named Entity Recognition), класификације текста (енгл. Text Classification) ...
    ... Београд: Институт за српски језик САНУ, 115–119. Едер и др. 2016: M. Eder, J. Rybicki & M. Kestemont, Stylometry with R: a package for computational text analysis, R Journal 8(1): 107–121. Закон о Речнику Српске академије наука и уметности: http://www.mpn. gov.rs/wp-content/uploads/2015/08/zakon_o_r ...
    ... ACADEMY OF SCIENCE AND ARTS Summary The question we ask ourselves in this paper is the following: Is it possible to determine who is the author of a text by analyzing various lexical features? In order to try to get an answer, we observed examples that support lexical entries listed in five of the total ...

  • Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)
    ... c Institution; Woods Hole, MA, USA 8Laboratoire de Géologie, Ecole Normale Supérieure (CNRS UMR), PSL Research University; Paris, France Text: Volcanic activity is readily observed and monitored for subaerial volcanoes; however, due to inaccessibility, little is known about the dynamics ...

  • Combining Heterogeneous Lexical Resources

    Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić (2004)
    development of lexical resources, morphological dictionaries, WordNet
    ... DELAS can be used by Intex to formulate complex queries. For instance, the query would retrieve all the possessive adjectives from a text that do not belong to the Ekavian pronunciation. The entries in DELAS can be enriched by derivational links that group together entries belonging ...
    ... devojcyin is the possessive adjective of the noun devojka. This information in the DELAS dictionary can be used by finite transducers to lemmatize the text using any lemma, arbitrarily chosen, from the derivational nest. • The Serbian wordnet (SWN) is being developed in the scope of the Balkanet project ...
    ... The use of the Intex regular expression (noun marked as a musical instrument in any form) enables, for instance, retrieving from a text of all the phrases of the type “to play on a musical instrument”. Da bi na gitari moglo da se svira solo dodata je josx jedna zxic muzike iz Vaca ...

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus
    ... classification: for a given statement, the system needs to determine whether it contains hate speech or not [36]. To achieve this goal systems usually apply text mining techniques. The majority of current hate speech, offensive, and abusive language detection systems in social media are based on lexicons or ...
    ... detection of these phe- nomena ([51, 52, 1, 6]). Warner and Hirschberg [44] presented their research on hate speech toward minority groups in online text, with the main focus on anti-semitic language. Three annotators manually annotated a corpus of 1000 paragraphs taken from offensive websites and Yahoo ...
    ... omission of diacritics, and different Unicode characters; 5. Use of foreign language words and emoticons (e.g. :’-),:-P, :@)); 6. Twitter-specific text: mentions, retweets and URLs as well as hashtags (e.g. #TLZP, #Utisak, #u6reci). 2.2 General Corpus annotation for classiĄcation of tweets The r ...

  • Geologic Information System of Serbia

    Branislav Blagojević, Branislav Trivić, Ranka Stanković, Nenad Banjac, Olivera Kitanović (2011)
    Geologic information system of Serbia (GeolISS) represents repository for digital archiving, query, retrieving, analysis and geologic data visualization. The GeolISS is implemented through ESRI ArcGIS technology, and is designed to operate as a personal geodatabase (MS Jet 4.0 Engine) and SDE enterprise geodatabase in MS SQL Server. The objective of GeolISS implementation is integration of existing geologic archives, data from published maps at different scales, newly acquired field data, as well as Web publishing of geologic information. Physical implementation ...
    Geologic information system, Conceptual model, Logical model, Implementation, Geodatabase
    ... field data records and measurements i.e. the basis for classified features, interpretations and models. Any observed property can be expressed as a text, number, picture and geometry (location). Spatial entities are treated as observation localities and mapped/interpreted geologic entities (oc ...

  • 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 ...
    ... options for the lexical model were considered. The first one were TEI (Text Encoding Initiative) Guidelines for dictionary de- scription. TEI is a widely accepted standard for text encod- ing that proposes solutions for many text types, one of them being dictionaries. However, it seems that TEI is ...
    ... duplicates (e.g. should atlas be one lemma or two lemmas that have same inflectional behavior, one denot- ing a book with maps and having markers +Conc+Text, the other denoting a type of a fabric and having markers +Conc+Mat). The consistency check is missing as well (e.g. can a marker +Hum be assigned ...
    ... E ’lemon’ ontology and lexicons. Semantic Web, 6:363– 369. Vitas, D., Pavlović-Lažetić, G., and Krstev, C. (1993). Electronic dictionary and text processing in Serbo- Croatian. Sprache–Kommunikation–Informatik, 1:225. 10. Language Resource References Krstev, Cvetana and Vitas, Duško. (2015) ...