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1034 items

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... Alps), S. etrus- cus-hundsheimensis was associated with different palaeoenvironmental conditions, ranging from a warm-temperate climate with dense mixed forest to conifer forest to cold-temperate climate with open xerophytic communities and steppe with birch trees (Betula sp.) and sparse woodland patches ...
    ... are found on the western rim of the Bogovina Basin, a tectonic depression filled with up to 380 m thick Upper Oligocene to Upper Miocene sediments with coal deposits (Cvetičanin and Novković, 1975; Petrović, 1977). With 6 km of explored channels, Bogovina Cave is one of the largest in Serbia (Milanović ...
    ... right molar (M1 or M2), with little wear, showing grey-yellow enamel, with extensive black manganese coating. The crown does not display much taphonomically- induced rounding or polishing. In occlusal view, the tooth is trapezoidal showing a well-marked ectol- oph profile with a strong paracone fold, ...

  • 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
    ... (positive), with another quarter preserved as an incomplete impression (specimen S37/3), a poorly preserved pos- itive of the outer mould of the last whorl with a small part of the penultimate whorl (specimen S30.4/1) and the juvenile specimen S31.2/4. Description. Semi-involute specimens with medium-high ...
    ... , p. 118, pl. 1, figs. 4-9. Material. External crushed outer mould with the last and penulti- mate whorls (specimen SA96/1). Description. Semi-evolute specimen, probably with slightly arched, moderately high whorls and with relatively broad umbilicus. The penultimate whorl bears thin, rather ...
    ... specimens with rela- tively flat whorl flanks of greater height and with a broad umbili- cus. The fullest specimen bears thick, sparsely spaced ribs. The ribs begin near the line of coiling as single ribs. At approximately half the height of the whorl, or slightly higher, the ribs bifurcate, with a ...

  • 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
    ... Namely, 1714 English keywords will search only through TUVs with xml:lang attribute set to en, while Serbian keywords will search through TUVs with xml:lang attribute set to sr. For instance, if the search is initiated with the English keyword online, and the Dictionary of librarianship ...
    ... search with the Serbian term novine, and expanding it with both the Wordnets and the Dictionary of librarianship the following keyword lists are obtained: newspaper, paper and press for English and dnevne novine, dnevnik, novine, and štampa for Serbian. If the search is performed with the “OR” ...
    ... BalkaNet project [Tufiş, 2004] and subsequently enhanced and upgraded. Most of the synstes in Serbian Wordnet are aligned with PWN synsets via the Interlingual Index, with the exception of Serbian specific synsets that are not available in PWN. The Interlingual Index enables bilingual query expansion ...

  • Application of ERT in the study of debris-flow source area: Case study Selanac debris flow

    Dragana Đurić, Jelka Krušić, Biljana Abolmasov (2021)

  • 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

  • Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study

    Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović (2019)
    Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...
    tecišta, modeliranje, RAMMS, DEM
    ... about 230 mm over a period of 72 h in May 2014.The Selanac is a complex debris flow, with large depth in source zone (30m), and length of about 1.5km. First results were made using 30x30m DEM as input, and another with much more precise 5x5m DEM. New UAV scanning of post event topology was obtained ...
    ... RAMMS gives opportunity to use friendly models of the terrain with better resolution, as a standard model. More precision in defining source area, erosion depth and deposition (Fig. 4) were provided after scanning of surface topology with resolution 5x5m in April 2017. Those input data were used for ...
    ... Using this parameters, estimated material was reached, but with a less deposition height (Fig. 5). J. Krušić et al.– Influence of DEM resolution to numerical modelling of debris flows in RAMMS 4 Figure 5 Final model with 30x30m DEM as input a) ξ =500 m/s 2 ,μ=0.05 b) deposited ...

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... decreases with the size of the MWU: very close for MWUs with two and three components (83.75% and 83.73% respectively, or 94.45% and 91.12% with partly correct) it drops to 70.08% (83.46% with partly correct) for MWUs with four components, 64.29% with five, and only 17.65% for MWUs with six components ...
    ... 97 for nouns and 20 for adjectives. Among them, 38 rules pertain to MWUs with 2 components, 45 rules to MWUs with 3 components, 20 rules to MWUs with 4 components, 9 rules to MWUs with 5 components, and 5 rules to MWUs with 6 and more components. 4.3 Software implementation To manipulate the strategy ...
    ... (POS="!SDIC"), but if it ends with -ska, -ška or -čka it will be treated as an adjective (setPOS="A"), with specific grammati- cal values (setGramCats="np1gae"), and a lemma, which can be obtained from the component form by deleting its final character and replacing it with an i (setLemma="[B]i"). ...

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • Filling of dolines with aeolian sediments in the high-mountain karst of the Dinarides (Mt. Durmitor, Montenegro)

    Mirela Djurović, Violeta Gajić, Predrag Djurović (2022)
    Filling of dolines with aeolian sediments, one of the less frequently described ways in which they are filled, is analysed in the present study on an example of a doline in the high-mountain karst of the Dinarides. There is a series of deep dolines on a broad ridge (about 2450 m a.s.l.) on Mt. Durmitor (Montenegro) in the southeastern part of the Dinarides. The accumulation of very fine-grained sand that almost completely fills one of the dolines was analysed. ...
    Doline, Zapuna, Eolski sedimenti, Karst, Dinaridi, Crna Gora

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... for the fact that the groundwa- ter is loaded with iron and manganese. Additionally, at many locations the ammonium ion exceeds regulated levels. Only 1786 Papić P., et al. Table 1. Comparison of Regulations of Republic of Serbia with the EU Directives with MPC. EU Directive 1998/83/EC drinking water ...
    ... d metal, is rarely found in the environment. Instead, it is usually combined with one or more other elements such as oxygen, chlorine, and sulfur. This combination is referred to as inorganic arsenic. Arsenic combined with carbon and hydrogen is referred to as organic arsenic. The organic forms are usually ...
    ... [14]. Based on a review of different literature sources, regions featuring high arsenic concentrations are generally associated with groundwater in geothermal areas or with low-temperature groundwater systems. Given that the sub- ject matter of this research was groundwater used for drink- ing water ...

  • Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery

    Maja Milošević, Biljana Đorđević, Mihovil Logar (2020)
    калцит, сирова глина, традиционална керамика, Злакуса
    ... prepar- ation and for the addition of calcite. The calcite pieces are first hammered to obtain smaller pieces and then ground in a fine grinding hammer mill, and for the most part, the same par- ticle size is used for all types of vessels. The fine grinding ham- mer mills are not standardized and ...
    ... occurs as lamel- lar hexagonal flakes with broken edges, while montmorillonite particles mainly form larger crumbly aggregates and dense plates with undefined edges. Titanium minerals in the form of rutile needles (~20 um) are evident in the samples, in agreement with Milošević et al. ( ). A smaller ...
    ... final clay body after mixing the raw clay with the CC in the appropriate ratio). The CIMx sam- ple consists mainly of AlL,Os (~16 wt.%) and SiO> (+57 wt.%) together with minor amounts of CaO, K,O and TiO», which indi- cate a large amount of clay minerals with quartz and feldspars impurities, while ...

  • 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
    ... , it is significantly slower than the thesaurus-based classifiers, and with the growth of a set of test documents, its performance further decreases, which was not desirable in solving our task. In this paper, we experiment with a simple classification approach to evaluate the importance of timely ...
    ... occurrences of terms (concept names from MeSH ontology) that, with 7 IR notes (on-line) 58 Infotheca Vol. 19, No. 1, September 2019 Scientific paper the simple mapping (stored in their identifiers in the ontology itself), are identified with a term that denotes a class, their parent object. This greatly ...
    ... documents were successfully annotated with the identifiers of concepts that appeared in them, it was necessary to clear the documents from the rest of the unpaired text. To prevent this from working individually for each document, they are merged into one, ∼230MB, in size, with new lines as the border between ...

  • The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines

    Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan (2008)
    In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...
    LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval
    ... highly inflective language, the search engines are faced with a problem they are practically unable to cope with. For example, let us consider that we wish to search the web for the information on beli luk ‘garlic’. When searching with the two constituent keywords beli ‘white’ AND luk 219 ...
    ... related to the initial proper name through holonym and meronym relations. Thus a query with the word Engleska ‘England’ can be expanded with Englez ‘Englishman’, Engleskinja, ‘English woman’ but also with Albion. 5. The inflection of free phrases by predicting their syntactic structure. Our ...
    ... surprisingly, the most frequent structure for compounds with two components is adjective+noun, followed by the compounds with the structure X+noun, where X means “a word form that does not inflect within the compound”. For compounds with three components the most frequent structure is noun+X+X ...

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... of speeding up the testing process with a clear procedure that includes compliance with existing regulations. LITERATURE [1] Instructions 338 were adopted for the control of compaction of the substrate of railway tracks by the dynamic method with a device with a light falling weight on the JŽ railway ...
    ... during construction were adopted, which are harmonized with the regulations of European countries, as follows: In 2006, Instructions 338 were adopted for the control of compaction of the substructure of railway tracks by the dynamic method with a light falling weight (Light Weight Deflectometer) device ...
    ... *in the Regulations Sd values with ** are valid for other tracks, according to the table 603 STEPGRAD2022 PROCEEDINGS OF INTERNATIONAL CONFERENCE ON CONTEMPORARY THEORY AND PRACTICE IN CONSTRUCTION XV the degree of compaction Rc* is applied here on the soil with a maximum grain size of 5 mm ...

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... Belgrade, Serbia bogoljub.vuckovic(a)eps.rs, bojan dimitrijevic(Q0)rgf.bg.ac.rs 4bstract:The Kostolac-Kovin coal basin with an area of 320 km?, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production ...
    ... analysis with selected cities in Serbia, region, Europe and world Bogoljub Vučković, Bojan Dimitrijević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected ...
    ... examples of the presence of HM in the soil of numerous European and world cities and regions in order to compare with the concentrations in our lignite. In the following chapters we will deal with this issue. Key Words: lignite, heavy metals, concentrations 1. GENERAL INFORMATIONS The coal basin is ...

  • FTIR Spectroscopic Study Of S-Metolachlor Sorption On Inorganic And Organically Modified Montmorillonite From Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... presented in this paper show the interaction of herbicide S-metolachlor with inorganic and organically modified montmorillonite from Bogovina (Boljevac municipality, Serbia). Clay sample from Bogovina represent Ca-Na montmorillonite with a small amount of quartz, cristobalite and carbonate minerals. Organic ...
    ... Organic montmorillonites were obtained after modiffication with different concentrations of organic complex (HDTMA and PTMA), whereas inorganic modification was performed with 1M NaCl solution. The interaction between minerals and herbicide was monitored using infrared spectroscopy. IR bands ...
    ... montmorillonite in comparison with the spectrum of inorganically modified montmorillonite. The wavenumber, intensity and width of these bands are sensitive to conformation in hydrocarbon chains. On the other hand, after the organic modification of the montmorillonite with the PTMA complex, stretching ...

  • Hydrogeochemistry of Uranium in the Groundwaters of Serbia

    Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić (2015)

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... direction with a maximal thickness around 900 m in central parts. The tectonic framework comprises older NE-SW and NW-SE faults, later overprinted with major E-W normal faults. Although the tectonic setting: of the basin is complex, the ore body zone is situated in a relatively undisturbed area with gentle ...
    ... deposits in Serbia, with borax mineralization identified in 2019. The deposit is in the exploration stage as a greenfield boron and lithium project in Western Serbia, operated by Euro Lithium Balkan d.o.o. (ELB). The deposit is situated in the "Valjevo-Mionica" Miocene age basin, with mineral paragenesis ...
    ... on the basin's southern margin, with groundwater from the middle Triassic limestone being utilized for the public water supply of Valjevo, Mionica and surrounding settlements. Karst groundwater under artesian pressure and elevated temperatures (17–37 "C) are taped with wells drilled below the Miocene ...