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Упит dcterms_subject_txt:Sustainability and the Environment

2793 items

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... l forms to the right of the lemma. In the same row there are the shortcuts to the list of all lexical records that are in the same dictionary (delas-im.dic) and the shortcut to the list of lexical records that share the same inflective paradigm (N2). In the upper right corner there is the button to access ...
    ... in the table Lexicon. These tables are shown in the Figure 1. The form ”Paris” is the same for singular and both male and female gender and it is stored in the Form table. The combination of grammatical categories (”ms” – (m) male (s) singular and (fs) – (f) female (s) singular) is stored in the FormGramCats ...
    ... ). The role of DatCatValuesRelations table is to enable relationships between markers themselves. An example of such a relationship would be the connection between the Ekavian and the Iekavian entries7, ie. the link between the “+Ek” and “+Ijk” markers. The DCVal- ueRelRules table describes the set ...

  • History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)

    Alena Zdravković, Maja Milošević, Kristina Šarić, Ivana Jelić, Ana Černok (2021)
    ... (Zdravković, 2014). The samples’ weight written on the labels was also very useful. The numbering of the samples and confirmation of the label names were done in 2014, thanks to the cooperation with Mr. Guy Consolmagno, curator of the Vatican Observatory and on the basis of a copy of the original Catalogue ...
    ... contained information on the sample’s name and the locality of recovery. The meteorites donated to the Mineralogical Museum of the Great School of Belgrade had numbers 36, 37 and 38, but meanwhile the specimen No 36 went missing. Descriptions of these three meteorites in the original catalogue are ...
    ... European and world archives and most of the exchanged samples are still kept in famous museums worldwide (e.g., Smithsonian in USA or Natural History Museum in Vienna). In 1895, the principal collection of the Mineralogical Museum of the Great School of Belgrade was divided into two and all the meteorite ...

  • Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles

    Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)
    Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
    Kinetika, Ravnoteža, Ru(II), L-Histidin, Guanozin-5' -monofosfat, Dimetilsulfoksid, Tiourea
    ... ð8Þ where rE and rV are the estimated variances of the potential and volume readings, respectively. The quality of the fit was judged by the values of the sample standard deviation S and the goodness of fit v2 (Pearson’s test). At rE = 0.1 mV (0.001 pH error) and rV = 0.005 cm3, the values of S ...
    ... with the aid of the computational program pHAb 2006 [49]. The calculations were carried out in the following way: the complexes found by potentiometry were included in pHAb calculations, and their stability constants were allowed to float. When the best fit of the spectra was achieved, the stability ...
    ... evaluated with the aid of the computational program pHAb 2006 [49]. The calculations were carried out in the following way: the complexes found by potentiometry were included in pHAb calculations, and their stability constants were allowed to float. When the best fit of the spectra was achieved, the stability ...

  • 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
    ... research – TT19, based on the same technology as TT11, the only difference being the set of resources used for training. Both the train- ing corpus and the lexicon were expanded. Several smaller annotated corpora were added to Intera: 1984, Švejk and Floods, and the lexicon was expanded to over ...
    ... noted that the most frequent classes, such as adjectives, nouns and verbs, have the greatest impact on the overall average result and in the feedback during tagger training. Further research could lead to the improvement for classes where the results were not satisfactory, e.g. adverbs and particles ...
    ... precision and recall per each tag, as well as the number of tokens in the test set, are given in Table 5. For the SR {25,50,75,50} models, F1, preci- sion and recall per each tag, as well as the number of tokens in the test set, are given in Table 6. The value “MISS” rep- resents the number of tokens ...

  • Concepts for Improving Machine Learning Based Landslide Assessment

    Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić (2019)
    Katastar klizišta, Podložnost, Hazard, Mašinsko učenje, Uzorkovanje, Validacija

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • 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

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... e-learning and computer-assisted learning and instruction and the other consists of NLP tools for analysis and use of language by machines [1]. The usage and application of the research done in the field of the NLP has been present in the domain of education from the 1960s. One of the first advances ...
    ... g of the field, the boom and the expansion [4]. Those stages are closely related with the development of computers. Consequently, we have different stages of computer usage, from input terminals through processing terminological data with personal computers, to the Internet expansion. The last one ...
    ... доступна је на www.dr.rgf.bg.ac.rs 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 The Seventh International Conference ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings

    Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović (2024)

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... With variety of content and the expected growth of the number of resources, as well as different profiles of potential users, indexing of resources that enables their efficient location within the network is very important for dissemination and sustainability of BAEKTEL project. To that ...
    ... proposed as an extension to the Schema.org metadata vocabulary addressing the needs of the educational community. The main rationale for the approach is that the choice of a standardized learning object metadata vocabulary has valuable and beneficial implications. Within the BAEKTEL platform, machine ...
    ... contents. While the conventional Web is the “Web of documents”, the Semantic Web includes the “Web of Data”, which connects “things” rather than documents. The machine-readable datasets of the Semantic Web are used in: search engines, data integration, resource discovery and classification, ...

  • Production information system of the Pljevlja coal mine

    Božo Kolonja, Ranka Stanković, Filip Vuković (2018)

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... lings of words, and need to deal with numerous XML-TEI tags used to preserve the format of original editions. Authors’ solution was based on the cascades of finite-state automata and both general dictionaries and those built speci- fically for the project. The evaluation showed that the slot error rate ...
    ... corrections using the BRAT annotation tool,9 while the second group used the INCEpTION.10 We wanted to receive user feedback on both platforms for the sake of creating the annotation process as com- fortable and efficient as possible in the future, but also to provide choice to annotators. The fundamental ...
    ... contain named entities. Afterwards, we ran- domly shuffled and split these sentences into training, test and development sets with the ratio of 8:1:1, i.e. 34,503 sentences in the train set, and the same number of sentences, 4,313, in the test and development sets, respectively. These sentences were prepared ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • 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

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... labels (e.g. hu- man) and some grammatical categories (e.g. adding the gender for the nouns); 2.3 Automatic prediction of the inflectional class and the production of dictionary en- try in DELA format (detailed description of the algorithm is given in section 3); 2.4 Compiling the dictionaries of newly ...
    ... assignment) for the lemma is repeated with threshold from 99 to 95 for relative frequency, for suffixes 6,5,4, and 3 respectively; 3. For thresholds under 95 and over 80 lemma prefix (if longer than 2 characters) is used: if the prefix is in the dictionary of prefixes and the remainder of the lemma is ...
    ... DELAS, then the lemma is the inflectional class of the corresponding DELAS word is assigned to the lemma. 4. For thresholds 80 and less steps 1 and 2 only are repeated. From a sample of domain texts and dictionar- ies we manually filtered 623 new terms from domains of mining, geology and e-learning ...

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... consequence of the lowermost position in the crust it held during the Variscan orogeny and thus the least rheological competence. The effects of this mode of deformation (i.e. parallelism between the stretching linea- tion and the fold axes b,) are less evident in the remaining. areas of the central ...
    ... c rocks. The remnants of the Variscan orogen in the Balkan belt represent a direct prolongation of the Variscan metamorphic rocks from the Getic zone and the SMM that have experienced clockwise rotation and dextral strike-slip tectonics during the Alpine orogeny (e.g. Csontos and Voros 2004; ...
    ... Geological setting The SMM represents a crystalline belt outcropping from the Pannonian basin in the north to the Aegean Sea in the south (Fig. 1). It should be noted that although our study concerns both Variscan and Alpine tectonics in the SMM, the names of the tectonic units discussed ...

  • Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian

    Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)
    slogovi, distribucija rang-preciznost, slovenski jezici

  • Vebran Web Services for Corpus Query Expansion

    Ranka Stanković, Miloš Utvić (2020)
    U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.
    corpus search, web service, Serbian lexical resources, query expansion
    ... identify themselves (Figure 4). The only parties that should ever see the access token are the client itself, the authorization server, and the resource server. The client should ensure that the storage of the access token is not accessible to other clients on the same device. The access token can only be used ...
    ... example, if the web service response contains the MWU leksički resurs, the generated query ([lemma="leksički"][lemma="resurs"]) would appear to succeed because both the leksički and the resurs are lemmas of the corresponding lex- emes. However, if the MWU leksička baza can be found in the web service ...
    ... LeXimirka database and orig- inate from Unitex DELAF and DELACF dictionaries, described in Section 3.1. The inflection of multiword units is additionally supported by the rule based system. The system supports different alphabets and character encod- ings (the aurora alphabet and ISO-8859-1 character ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... fects the amount of greenhouse gases in the atmos- phere. The main consequences of the interactions of the atmosphere and the geosphere are best observed in the relatively recent events while during the geolog- ical “deep” time these relations become blurry. As an example, from the end of the Paleocene ...
    ... example, the recent research on the Trias- sic Chinle Formation in Petrified Forest National Park in Arizona confirms the existence of a foreseen 405.000-year Milanković’s cycle influenced by the movement of the planets jupiter and venus. The core samples from the Chinle Formation were dated and correlated ...
    ... gions, the Arctic and the Antarctic. These covers in- crease and decrease in volume during a shorter intervals identified as glacial periods (including the formation of additional ice sheets besides the two at the poles) and interglacial episodes (exclusive of additional ice sheets). During the icehouse ...