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Упит dcterms_subject_txt:definition of criteria

2845 items

  • 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)
    ... decrease of content of short-chain (С15-Сг0) and increase of long-chain (Cz6-Ca3) homologues. The obtained results suggest lowering of the water table during the formation of the Main coal seam. This change resulted in lesser inundation and deposition of MM associated with smaller input of bacterial ...
    ... 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 of collotelinite ...
    ... Development Office - Belgrade, Makedonska 33, 11000 Belgrade, Serbia 5; University of Belgrade, Innovation Center of the Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade, Serbia 6; University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia *: Corresponding Author: ...

  • Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides

    Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević (2021)
    ... from the environment. The efficiency of the sorption of S-metolachlor by montmorillonite depends on the size of the interlayer space, the type of interchangeable cation, and also on the characteristics of the montmorillonite surface. Disclosure of Interest: None Declared Keywords: ...
    ... CHARACTERIZATION OF NATURAL CLAY FROM BOGOVINA (SERBIA) AND POSSIBLE UTILIZATION IN SORPTION OF THE HERBICIDES Lazar M. Kaluđerović* 1, Zorica P. Tomić1, Rada Đurović-Pejčev2, Maja Milošević3 1Department for Soil Management, Faculty of Agriculture/ University of Belgrade, 2Laboratory of Chemistry, Institute ...
    ... adsorption of S-metolachlor was highest for HDTMA-montmorillonite with 1CEC saturation.  High sorption of examined herbicides on some organically modified montmorillonites creates an opportunity for application of these substrates as potentially useful material for removal of S-metolachlor ...

  • 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

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... system. The objective of this paper is to present the results of recent monitoring activities conducted from 2014 to 2019 as a part of IPL 181 Project report. Study Area The study area is located on the right bank of the Sava river, 25 km South-west of Belgrade, the capital of Serbia. Extensive ...
    ... Arbanas, University of Zagreb, Croatia Željko Arbanas, Faculty of Civil Engineering, University of Rijeka, Croatia Amin Askarinejad, Technische Universiteit Delft, Delft, The Netherlands Peter T. Bobrowsky, Geological Survey of Canada, Sidney, Canada Michele Calvello, University of Salerno, Italy Giovanna ...
    ... University of Twente, Enschede, The Netherlands Matjaž Mikoš, Faculty of Civil and Geodetic Engineering, University of Ljubljana, Slovenia Alessandro C. Mondini, Research Institute for Geo-Hydrological Protection, CNR, Italy Veronica Pazzi, Department of Earth Science, University of Florence, Florence ...

  • The number of unimodular roots of some reciprocal polynomials

    Dragan Stankov (2020)
    We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Antioxidant and antimicrobial activity of some tetradentate Schiff bases and their Cu (II) complexes

    Aleksandar Mijatović, Milan Nikolić, Snežana Spasić, Aleksandra N. Žerađanin, Kristina Joksimović, Aleksandar Lolić, Rada Baošić (2020)
    Šifove baze i njihovi Cu(II) kompleksi su poznati po svojoj biološkoj aktivnosti. U ovom radu proučavana je antibakterijska aktivnost protiv gram-negativnih sojeva Escherichia coli, Pseudomonas aeruginosa i Staphilococcus piogenes, kao i Gram-pozitivnih Staphilococcus piogenes i Pseudomonas aeruginosa, zajedno sa antifungalnim dejstvom protiv Musperg strainilusa, A. Takođe, tehnički jednostavni i brzi testovi kao što su ABTS, HORAC i ORAC korišćeni su za ispitivanje antioksidativne aktivnosti kako bi se uporedili dobijeni rezultati sa različitim tipovima testova. Uprkos tome što je princip ...

  • 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
    ... terms and definition in another language (presently only English equivalents of definitions are in the database). Externally developed Dictionary of library and information sciences10 encompasses the terminology of theory and practice of librarianship and in- formation sciences and a wide range of close ...
    ... for the imple- mentation of our web service, the older version is used with 23,400 entries (11,300 in English and 12,100 in Serbian, 910 definition or annotation terms which belong to library standards, and 2,200 acronyms of international and national entities). The intention of this dictionary is to be ...
    ... University of Belgrade Faculty of Mining and Geology Miloš Utvić milos.utvic@fil.bg.ac.rs University of Belgrade Faculty of Philology Belgrade, Serbia 1 Introduction It is generally known that users typically formulate very short instead of long and complex queries. The lemmatization of corpora ...

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    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 ...
    Morphology, Lexicon, lexical database, Standards for LRs
    ... 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 ...
    ... 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 A Description of Morphological Features of Serbian: a Revision ...
    ... encountered in the previous versions, such as lack of attributes or attribute values, explicit statement of valid combinations of attribute and values. We expect that our description will transform without loss of information in the new version of MULTEXT-East format. 7. References Courtois, B ...

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија
    ... iples of “industrial” correlation, hydrocarbon  reservoirs  of  the  “Mokrin”  field  represent  individual  sandstone  layers.  The  new  approach,  using  the  analysis of geological and geophysical data according to the principles of sequence stratigraphy, with the  focus on definition of deposi ...
    ... s  of the shape and characteristics of curves of gamma ray  (GR) and specific resistivity  (RT)  logs.   Funnel  shape of  the GR  log points  to  the  reduction  in  the basin water  level and  the  increase  in  the  level of  depositional energy, which leads to the reduction in the content of sha ...
    ... inconsistencies  in the selection of markers  in designation and correla‐ tion of hydrocarbon reservoirs, this approach has  led to  incorrect assessments of oil and gas reserves,  confusion in the interpretation of hydrodynamic measurements and reduced efficiency in the process of  reservoir management. As ...

  • Towards more sustainable district heating systems in Serbia - Options and obstacles

    Marija Živković, Boban Pavlović, Dejan Ivezić, Miloš Tanasijević, Dejan Stojanović (2024)
    The major share of energy consumed in the building environment is dedicated to meeting heating needs, which makes this sector one of the key players in the transformation of the whole energy system. The accurate approach to the transition process assumes acting on both the demand and supply sides. Lately, the supply side has received more attention, as its transformation is one of the key steps of the energy transition process. District heating systems are recognized as substantial contributors ...
    energetska tranzicija, daljinsko grejanje, dekarbonizacija, obnovljivi izvori energije, prepreke, Srbija

  • A tool for identifying the criticality in the disordered systems with metastable dynamics

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević (2021)
    Физика кондензоване материје

  • 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

  • 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

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... with one of them hosting the BMP. framework, which is described in more detail in section 2. Section 3 of this paper outlines the key aspects of metadata management, including standards for describing educational resources and the approach to BAEKTEL metadata definition. In section 4a review of the main ...
    ... in more detail in section 2. Section 3 of this paper outlines the key aspects of metadata management, including standards for describing educational resources and the approach to BAEKTEL metadata definition. In section 4a review of the main open source Digital Asset Management (DAM)systems ...
    ... structure of the BAEKTEL OER framework isillustrated by the deployment model in Figure 1.The initial framework consist of a network of six nodes at WB universities, namely University of Belgrade (UB), University of Kragujevac (UNIKG), University of Niš (UNI) from Serbia, University of Banja Luka ...

  • 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
    ... 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 Usage of Various Lexical Resources and Tools to Improve the Performance of Web ...
    ... brief description of resources is given, followed by an outline of the web tool which enables their integration. Finally, a set of examples is chosen in order to illustrate the use of the lexical resources and tool in question. Results obtained for these examples show that the number of documents obtained ...
    ... Ranka Stanković2 , Duško Vitas 3 , Ivan Obradović4 1 professor, Faculty of Philology, Belgrade, 2 assistant, Faculty of Mining and Geology, Belgrade 3 professor, Faculty of Mathematics, Belgrade, 4 professor, Faculty of Mining and Geology, Belgrade E-mail: cvetana@matf.bg.ac.yu, ranka@rgf.bg.ac ...

  • 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
    ... STRASSER, A.H., HILGEN, F. & HECKEL, P.H. 2006. Cyclostrati - A hundred years of Milutin Milanković’s climate change theory – geological implications Geol. an. Balk. poluos., 2020, 81 (2), 87–98 97 graphy concepts, definition, and application. newslet- ters on Stratigraphy, 42 (2): 75–114. TANS, P ...
    ... only potentially noticeable in climate records of several to tens of millions of years. The Milanković’s cycles are the basis of cy- clostratigraphy, one of the youngest stratigraphic A hundred years of Milutin Milanković’s climate change theory – geological implications Geol. an. Balk. poluos., 2020 ...
    ... National Research Council of the U.S. National Academy of Sciences has embraced the model of Milanković’s Cycles. Earth climate changes - past and future Milanković’s cycles provided an understanding of the last ice age and are used for explanation of cli- mate changes of the geological past. The planet ...

  • Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints

    Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski (2024)
    Apuseni-Banat-Timok-Srednogorie belt, danubicum, paleomagnetism, oroclinal bending

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... other side, the bulkiness of two methyl groups in the molecule of DMSO as well as the bulkiness of the inert tridentate ligands in the structure of the studied complexes could prevent the formation of the metal–ligand bond and slow down the rate of the substitution. The reactivity of pyridine is almost the ...
    ... the complexes with TLtBu ligand due to the bulk- iness of the inert tridentate ligands. Also, the presence of t-Bu groups on the terminal imadazole rings of TLtBu ligand significantly slow down the rate of the substitution. The order of reactivity of used ligands is: thiourea > I� > Br� > NO2 � > pyridine ...
    ... with TL" ligand due to the bulk- Substitution iness of the inert tridentate ligands. Also, the presence of t-Bu groups on the terminal imadazole rings of TL" Kinetics ligand significantly slow down the rate of the substitution. The order of reactivity of used ligands is: Mechanism thiourea > I~ > Br- > ...

  • On the compatibility of lexical resources for NooJ

    Ranka Stanković, Miloš Utvić, Duško Vitas, Cvetana Krstev, Ivan Obradović (2012)
    Lexical resources for many languages are provided for the NooJ linguistic development environment. Meta-data descriptions of morphosyntactic and semantic properties of these languages and their resources are a mandatory part of each language module. In this paper we analyze how well the meta-data actually describe resources for a chosen subset of languages and to what extent are they compatible across languages to support multilingual processing. We show that there is place for improvement in both directions.
    ... ’ Definition files. The section that follows outlines the results of lexical analysis of the application of NooJ resources to aligned texts. Finally, a section is dedicated to some related issues of compatibility and standardization. The paper ends with concluding remarks. Comparison of annotation ...
    ... the Dictionary Properties’ Definition files, with the extension “def”, which will be referred to as the *.def files. The general form of these metadata is “category_property=value”. For example, N_Nb=s+p3 means that the property grammatical number (Nb), in the case of category nouns (N), can have ...
    ... was precisely a comparison of metadata, namely of the content of *.def files for resources of the seven selected languages. Table 1 presents the results of the analysis of *.def files in the case of nouns. Value domains of two properties, one of them appearing in all languages and the other appearing ...

  • 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
    ... Serbia ~ 80 km south of Belgrade on the central axis of the Sava Zone that is inter- preted as a suture of the final closure of the northern Neotethys branch (Schmid et al. 2008). The Mesozoic geology of the central Balkan Peninsula reflects the evolution of the Vardar branch of the Neotethys in ...
    ... value of U and Th is 3 ppm (Table 1). Discussion Analysing mineral zonation is a hard and challenging task due to the dimensions of the analysis pit to the relative scale of zonation and the angle of zonation margin to the imaged Fig. 4. BSE image of garnet grains with positions analyzed of EMPA ...
    ... by project no. OI176019 of the Ministry of Education, Science and Tech- nological Development of the Republic of Serbia. The authors thank the LA-ICP-MS laboratory, Geological Institute in Sofia, as well as the SEM laboratory, Faculty of Mining and Geology, University of Belgrade for support. The ...