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Упит dcterms_subject_txt:space group

366 items

  • Long-term rockslope monitoring and rockfall prediction

    Miloš Marjanović, Biljana Abolmasov, Marko Pejić, Jelka Krušić (2021)

  • Утицај похабаности резних елемената роторног багера на ниво вибрација погона за копање

    Филип Милетић (2023)
    У докторској дисертацији је анализиран утицај похабаности резних елемената роторног багера на потрошњу електричне енергије и ниво амплитуде вибрација погона за копање. Креиран је модел који у функцији стања резних елемената дефинише зависност разматраних физичких феномена. За развој модела примењене су једначине теорије осцилација и Ватметарска метода [1] којом се одређује потрошња електричне енергије. За верификацију модела извршена су мерења на роторном багеру SRs2000.32/5+VR ангажованом на откопавању откривке на површинском копу Тамнава–Западно поље. Обављено је пет мерења. Резни елементи су ...
    роторни багер, резни елементи, хабање, вибрације, потрошња електричне енергије

  • Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif

    Ljiljana Vasić, Laszlo Palcsu, Huang Fen (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... ruthenium and platinum complexes, respectively. The peak group around 569.3 was assigned to [RuCl2(bipy)2]Cl which had lost one chloride anion, followed by elimination of two neutral HCl molecules and addition of one more bipyridine ligand. The peak group around m/z = 498.6 corresponded to the sodium adduct ...
    ... ruthenium and platinum complexes, respectively. The peak group around 569.3 was assigned to [RuCl(bipy).]Cl which had lost one chloride anion, followed by elimination of two neutral HCl molecules and addition of one more bipyridine ligand. The peak group around m/z = 498.6 corresponded to the sodium adduct ...
    ... chloride anions with one more bipy ligand.27 The presence of this peak groups does not disturb the analysis of lysophospholipids. In contrast, the peak group for the corresponding platinum complex is found from 494 to 498 in relation to the broad distribution of natural platinum isotopes (Fig. 2B). The ...

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • Petrographical and organic geochemical study of the subbituminous coal from the Dubrava field, Aleksinac basin (Serbia)

    Željana Sekulić, Ksenija Stojanović, Achim Bechtel, Reinhard Sachsenhofer, Miomir Petrović, Ivan Kojić, Dragana Životić (2019)
    ... carbon isotope ratios (6'3) of individual biomarkers were used to evaluate the origin and depositional environment of OM. The content of vitrinite group macerals increases from top to bottom of the Main coal seam which is associated with a notable decrease of liptinite and mineral matter (MM). Contents ...

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... Duško Vitas. (2015). Serbian Morpho- logical Dictionary - SMD. University of Belgrade, HLT Group and Jerteh, Lexical resource, 2.0. Cvetana Krstev. (2013). Serbian WordNet. University of Belgrade, HLT Group and Jerteh, Lexical database, 2.0. Ljiljana Kovačević, Dr Dobrila Begenišić, Vesna Injac- ...
    ... Stankovic, Cvetana Krstev. (2016). LeXimir. Uni- versity of Belgrade, HLT Group, Software Toolkit, 2.0. Ranka Stanković and Cvetana Krstev and Nikola Vulović and Biljana Lazić. (2014). Biblisha. University of Bel- grade, HLT Group, Bilingual digital library, 2.0. 2494 ...
    ... syntactic structure it recognizes is output as well as the number of extracted forms and (word by word) lemmas.8 The total number of 6One class can group MWTs with various syntactic struc- tures (recognized by different graphs, or finite-state automata); all MWTs in one class have the same number and ...

  • Mikroorganizmi - biohidrogeološki indikatori odabranih pojava mineralnih voda Srbije

    Vladimir Šaraba (2021)
    Sa namerom definisanja hidrogeološke uloge i značaja mikrobiološkog diverziteta odabranih pojava mineralnih voda Srbije, primenom sistema biodetektora, dokazano je prisustvo gvožđevitih, sulfato-redukujućih, sluz-produkujućih, heterotrofnih aerobnih i denitrifikacionih bakterija, na osnovu čega je proračunat rizik od razvoja procesa biokorozije i biohemijske inkrustacije, te zdravstveni rizik. Uz procenu rizika, izvedene su analize skenirajuće elektronske mikroskopije biofilmova i hidrogeohemijsko modeliranje, te makroskopska, otpička i difrakciona ispitivanja naslaga inkrustacije, dok je fizičko-hemijskim analizama utvrđena vrednost ukupne mineralizacije iznad 1 g/L, kao i povišeni ...
    biohidrogeologija, SEM analize, makroskopska i optička ispitivanja, rendgenska difrakcija praha, hidrogeohemijsko modeliranje, BART analize, metabarkoding analize mikrobioma, fizičko-hemijske analize, starenje bunara (biokorozija, biohemijska inkrustacija i biozarastanje), zdravstveni rizik
    ... f__Parcubacteria group bacterium GW2011_GWC1_51_35;g__Parcubacteria group bacterium GW2011_GWC1_51_35 0,00 0,00 0,10 0,00 0,00 k__Bacteria;p__Patescibacteria;c__Parcubacteria;o__Candidatus Vogelbacteria;f__Parcubacteria group bacterium GW2011_GWF2_52_12;g__Parcubacteria group bacterium GW2011_ ...
    ... raceae 0,00 0,01 0,00 0,00 0,00 k__Archaea;p__Euryarchaeota;c__Thermoplasmata;o__Marine Group II;f__uncultured archaeon 0,00 0,00 0,12 0,00 0,00 k__Archaea;p__Euryarchaeota;c__Thermoplasmata;o__Marine Group II;__ 0,00 0,00 0,13 0,00 0,00 k__Archaea;p__Euryarchaeota;c__Thermoplasmata;o__uncultu ...
    ... cteria;c__Parcubacteria;o__Candidatus Vogelbacteria;f__Parcubacteria group bacterium GW2011_GWC1_51_35 0,00 0,00 0,10 0,00 0,00 k__Bacteria;p__Patescibacteria;c__Parcubacteria;o__Candidatus Vogelbacteria;f__Parcubacteria group bacterium GW2011_GWF2_52_12 0,00 0,00 0,01 0,00 0,00 k__Bacteri ...

  • Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event

    Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco (2023)
    Brachiopods, taxonomy, biostratigraphy, early Toarcian Anoxic Event, Bulgaria

  • Keyword-Based Search on Bilingual Digital Libraries

    Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović (2017)
    This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...

  • 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
    ... corpora for information retrieval is given in [Gravano, 2006]. The HLT group has previously tackled the issue of enhanced cross-lingual search, albeit for individual texts only. Namely, one of the tools developed within the group, dubbed LeXimir, was designed as an integrated environment for various ...
    ... In this paper we outline the main features of Bibliša (http://hlt.rgf.bg.ac.rs/Biblisha), a tool developed within the Human Language Technology group at the University of Belgrade, aimed at enhancement of search possibilities in multilingual digital libraries of e-journals. The tool offers ...

  • Knowledge and Rule-Based Diacritic Restoration in Serbian

    Cvetana Krstev, Ranka Stanković, Duško Vitas (2018)
    In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).
    diacritic restoration, morphological dictionary, corpus, word n-grams, local grammars
    ... actic representation of RuThes-lite 2.0 text entries, that is part-of-speech labels for single words and syntactic classes (noun group, verb group, and adjective group) for phrases. The divided synsets were linked to each other with the relation of part-of-speech synonymy (cross-categorial synonymy) ...

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... transformed into XML format, while other were developed in it. 2 / 9 943Lexicography in gLobaL contexts 1) headword group; 1. headword lemma; 2. grammatical data; 3. related words (lexical entries); 2) grammatical data; 3) etymology – an element from the closed set ...
    ... ech: some may refer to the lemma, others to the headword. Both high- and low-level elements are optional and repeatable, except for the headword group itself. The typographic conventions and triggers as applied to nouns are summarized in a simplified way in Table 1, while the graphical outline of ...
    ... interpretations. Table 1: The typographic conventions and triggers as applied to nouns. Element Example Typography Trigger begin Trigger end Headword group lemma пȁлеоцēн bold comma or trigger begin gramm. data -а hyphen lemma палеòцēн bold и comma or trigger begin gramm. data -ена hyphen ...

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... first step in classifying (and indexing) is most often the creation of a document surrogate. Usu- ally, documents are translated into the word-vector space, or a frequency index. Sometimes words in the index are further derived using stemming or lemmatization, and sometimes by replacing synonyms or hypernyms ...
    ... Blamey (Nottingham City Hospital, UK). Goserelin was found to be better ... Results were presented by the Austrian Breast and Colorectal Cancer Study Group comparing ... Figure 1. A fragment of one of the documents to be classified. The classification presented in this paper was done according to the ...
    ... Blamey (Nottingham City Hospital, UK). Goserelin was found to be better ... Results were presented by the Austrian Breast and Colorectal Cancer Study Group comparing ... Figure 9. A fragment of the original document with the concepts found in MeSH ontology marked. ... D06.472.699.327.740.320.340 in the ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • From post-disaster landslides inventory to open landslides data

    Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić (2021)

  • Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.

    Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev (2024)
    Tethys closure, Scaglia Rossa, intracontinental basalts
    ... differentiate two groups of deformations based on twinned calcite: older deformations indicating temperatures >300% and locally >500%C, and a younger group observed within a ~10 km wide zone around the Klepa volcanic rocks, ending with ~100 m wide major shear belts. Thc direct contact between the Upper ...

  • NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands

    Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)
    Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...
    Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods