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Упит dcterms_subject_txt:ležišta soli

594 items

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • 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 ...
    ... they are kept in a number of files, according to different criteria. These dictionaries are in the so-called DELA format: in the dictionary of lemmas each lemma is described in full detail, so that the dictionary of forms containing all nec- essary grammatical information can be generated from ...
    ... Establishing derivation relation is, in general, far from sim- ple. So far, we have dealt with possessive adjectives derived from surnames, leaving other cases – diminutives, augmen- tatives, relational adjectives, gender motion, and so on – for future work. E-dictionaries contain a large number of sur- ...
    ... markers in the SenseProperties table.4 SenseRelation provides for connecting various senses with others that are narrower, broader, synonymous and so on, while SenseRef and SenseExample contain infor- mation about provenance and usage. For languages with rich morphology, such as Serbian, the m ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... of NO, emissions) [10]. The occurrence of SO, is very rare, but it could appear in very small quantities. Otherwise, if it were in greater quantity, the gas mixture would be carried out through the SO, reactor, where the 96% conversion of SO, into SO; is carried out with the assistance of catalyst: ...
    ... The released heat increases the temperature of the gas by about 19 ?C, and the cooled process gas exits the reactor, while SO, is reacting with the water vapor: SO.,+ H,O— H,SO, (+101 kJ/mol) Q) In the next part of the process system, 92-97% of H.SO, is condensed without any accompanying products ...
    ... obtained by the underground gasification of coal, some special gel can be injected o certain areas ofthe UCG, which would then seal the boundary surfaces, so that groundwater could not penetrate it. Such cases are extremely rare. There is a known case of such activities performed on the industrial UCG ...

  • 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

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... rečnik Rečnik geostatističkih pojmova i termina, koristi se za modeliranje buke, distribucije prašine, kreiranje geološkog modela ležišta mineralne sirovine. 1 encyclopedia
    ... indexes, glossaries, taxonomies, thesauruses and ontologies. Basically, each of them is an extension of the one that precedes it, thus forming the so called ontological spectrum [3], as depicted in Figure 1. We will give a brief outline of these forms, but it should be stressed that the boundaries ...
    ... RudOnto is a multilingual resource, another type of relations is introduced, namely those between equivalent terms in different languages, or the so called translational equivalents. However, although a term in one language can have several equivalents in another, for practical reasons one of them ...

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... nodes representing sets of synonymous word (synsets) which are linked by various semantic relations. The first built wordnet was English wordnet, so-called Princeton Wordnet (PWN), having today approximately 140,000 synsets. Due to its remarkable size and successful inclusion in various com ...
    ... language extension”. In the same form user can choose to morphologically inflect all chosen keywords in both languages. If she/he wishes to do so the box “With inflection” should be checked. Morphological expansion is performed by Unitex modules that use morphological dictionaries of simple ...
    ... s. This options works only if a particular query keyword is listed in the morphological dictionary of the corresponding language. If it is not so, the aligned text will be searched only with the original keyword. As shown in Figure 2, the automatically added inflected forms of chosen keywords ...

  • 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
    ... considered the length of the identifiers, so they were replaced by a certain number of iterations of the parent class depending on their length, to test the assumption that the use of more specialized terms was more important for determining the class of documents. So, instead of reducing the identifiers ...
    ... restricted domain of classes, and in an unknown one. For both, the problem is reduced to calculating the similarity of docu- ments, usually with use of the so-called Dice6 index or coefficient. sim(Di, Dj) = 2|Si ⋂ Sj | |Si|+ |SJ | (1) Dice’s equation tells us that if Si is a set of terms from document ...
    ... classified, a second C# code has been prepared. It loads the classification documents one at a time and applies the script generated in the previous step so that the concepts are found by name and replaced by an ontology node identifier. This stage is the longest and the most time consuming because our experiment ...

  • Convective heat transfer in centrifugal pumps lifted wells: the case of South-Eastern Europe waxy wells

    Bojan Martinovic, Marija Živković, Branko Grubač (2021)
    Electric submersible pumps (ESP) are applied in wells where additional energy is needed to ensure discharge of the fluid to the surface through the tubing. At the discharge side of the pump the fluid has bigger velocity, thus the pump induces a forced convection between the fluid and the tubing inner surface. Understanding of convective heat transfer in wellbores and analyses of influential parameters provides a possibility to optimise value of convective heat transfer coefficient in order to avoid ...
    prenos toplote konvekcijom, ESP pumpa, svojstva fluida, problemi u radu bušotine

  • Serbian ELTeC Sub-Collection in Wikidata

    Milica Ikonić Nešić, Ranka Stanković, Biljana Rujević (2021)
    This paper presents an example of integration of Wikidata with digital libraries and external systems, as well as some best practices for speeding up the process of data preparation and import to Wikidata, on the use case of SrpELTeC, Serbian subcollection of the ELTeC multilingual collection (European Literary Text Collection). After preliminary work on the manual Wikidata population with SrpELTeC novels, the goal was to automate the process of preparing and importing information, so different solutions were analysed and ...
    Википодаци, удаљенои читање, књижевни корпус, повезивање именованих ентитета, ELTeC, SrpELTeC

  • Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4

    Lidija Radovanović, Željko Radovanović, Aleksandar Kremenović, Bojana Simović, Milica V. Vasić, Jelena Rogan (2022)
    In recent years, thermal decomposition studies of transition metal complexes with benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–gel treatment, thermolysis is faster, more efficient ...

  • The number of nonunimodular roots of a reciprocal polynomial

    Dragan Stankov (2023)
    We introduce a sequence Pd of monic reciprocal polynomials with integer coefficients having the central coefficients fixed as well as the peripheral coefficients. We prove that the ratio of the number of nonunimodular roots of Pd to its degree d has a limit L when d tends to infinity. We show that if the coefficients of a polynomial can be arbitrarily large in modulus then L can be arbitrarily close to 0. It seems reasonable to believe that if ...
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Cyanobacterial diversity and toxicity of biocrusts from the Caspian Lowland loess deposits, North Iran

    Tamara Dulić, Jussi Meriluoto, Tamara Palanački Malešević, Violeta Gajić, Tamara Važić, Nada Tokodi, Igor Obreht, Bojan Kostić, Petar Kosijer, Farhad Khormali, Zorica Svirčev (2016)
    Biocrusts and adjacent sediments were collected from the so-called loess plateau of Northern Iran and the loess deposits on the foothills of Alborz Mountains. The mineralogical and granulometric analyses characterized sediments as quartz-rich clayey or sandy silts. Cyanobacterial diversity, colony morphology and grain stabilization were studied by light and scanning electron microscopy, which showed glue-like layers of cyanobacterial EPS and dense networks of filamentous cyanobacteria immobilizing finer and bigger grains, respectively. Amorphous, tuft and globular cyanobacterial colony structures were also detected. 15 cyanobacterial genera were ...
    Biokore, Cijanobakterije, Diverzitet, Cijanotoksini, Stabilizacija sedimenata, Les

  • Status and tendencies under development and application of underground coal gasification-UCG

    David Petrović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić (2018)
    Podzemna gasifikacija uglja u Svetu poslednjih decenija doživljava znatnu ekspanziju u istraživanju i razvoju zbog uveliko iskorišćenih ležišta uglja i loših ekoloških efekata (pri sagorevanju u TE) na životnu okolinu. Srbija ima znatne rezerve uglja, a kada bi se za PGU koristile samo vanbilansne rezerve i otkopni ostaci bilansnih, jasno je kakvi bi bili ekonomski (a i energetski i ekološki) efekti. U radu su sagledane aktivnosti u Svetu na tom planu, pa smatramo da ima smisla i potrebe za primenu ove ...
    energetika, ugalj, ekologija, gasifikacija

  • Annotation of the Serbian ELTeC Collection

    Ranka Stanković, Cvetana Krstev, Branislava Šandrih Todorović, Mihailo Škorić (2021)
    Ovaj rad predstavlja takozvano izdanje nivoa 2 kolekcije tekstova SrpELTeC razvijene u okviru aktivnosti Radne grupe 2 – Metode i alati COST akcije CA 16204 (Distant Reading for European Literary History) i njene specifikacije šeme. Izdanje nivoa 2 je nastavak izdanja nivoa 1, koje se koristi kao ulaz za morfosintaksičke i NER anotacije romana. Srpska obrada nivoa-2 je navedena kroz potrebne korake, uključujući metode i alate koji se koriste u tom procesu. Neki statistički podaci iz srpske kolekcije nivoa ...
    udaljeno čitanje, literarni korpus, tagiranje, prepoznavanje imenovanih entiteta, lematizacija, ELTeC

  • Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović (2022)
    Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...

  • Karst wastewater as a high quality, renewable and within the circular economy water resource

    Jovana Nikolić, Vesna Ristić Vakanjac (2021)
    High quality drinking water in it’s natural state is becoming less and less available to the human population. Based on the expected climate changes, it is considered that this resource will be less in the world but also in our region. Also, the accompanying polluting components that exceed the maximum allowable concentration are increasingly present in the waters. Even after the water treatment, it happens that some components are still in the drinking water, which adversely affects human health. ...
    water resource, groundwater, karst aquifer, water supply, irrigation

  • Pećina Peštera kod Laznice - primer razvića speleoloških objekata u zoni raseda (rasednoj breči)

    Mihajlo Mandić, Ana Mladenović (2022)
    Pećina Peštera se nalazi istočno od sela Laznica kod Žagubice. Iako lako pristupačna za posetioce i istraživače, do sada nije bila predmet detaljnijih istraživanja. Pominje se samo u prikazu arheološki interesantnih objekata okoline Žagubice, ali sa svedenim i uglavnom netačnim podacima o morfološkim karakteristikama. Speleološki značaj joj daje, pored relativno velikih dimenzija dvorane, njen razvoj u tektonski veoma oštećenoj zoni ukrštanja dva raseda što za posledicu ima potpunu dezintegraciju stenske mase u breču. Proces karstifikacije breče formira specifične morfološke ...
    speleomorfologija, breča, Laznica, Žagubica

  • Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer

    Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)
    ... as a very important and even sole resource in large parts of this region. The proposals that can be considered most important are: (i) opening ofnew sources for regional water supply based on alluvial groundwater and (ii) centralizing waterworks at municipality levels so that water will be adequately ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Производња и одржавање рударске опреме на примеру предузећа Колубара метал

    Вања Миловановић (2024)
    У раду је извршено пројектовање технолошког процеса израде вратила на стругу. Кроз теоријску анализу, дати су основни постулати обраде стругањем, стругови као машине алатке, врсте стругова, начини стругања и примењени алати. У практичном делу, дефинисани су редоследи операција и захвата, режими обраде, изабрана машина алатка и алати за све захвате и одређено укупно време обраде потребно да се направи финални производ. Вратило из студије случаја представља компоненту редуктора погона за копање роторног багера SRs.1200.24/4+VR.
    производно машинство, обрада метала резањем, израда вратила на стругу