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518 items

  • Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems

    Dejan Ćebić, Nebojša M. Ralević (2021)
    нелинеарне једначине, поступци засновани на срединама, вишеструки корени,

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization

    D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović (2020)
    Geotermalna energija, hidrogeotermalni potencijal, stepen iskorišćenja, banja, Rogozna, Srbija

  • 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
    ... basic periods in development of terminology, the origins, the structuring 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 ...
    ... Processing whilethe work that has been done in the field of terminologyhas become to be an indespensible, widespread used resource. The standards related to terminology management are often used by the localization and translation industry as well as public translation and terminology units and o ...

  • Savremene tendencije upravljanja mineralnim resursima u svetu i stanje u Republici Srbiji

    Dragan Ignjatović, Vladimir Pavlović (2024)
    Strategija upravljanja mineralnim i drugim geološkim resursima na održivim i holističkim osnovama, služi kao osnova za vladinu politiku vezanu za geološka istraživanja i eksploataciju mineralnih resursa u skladu sa njenim pravnim i regulativnim obavezama. Uspostavljanje Strategije obezbeđuje osnovu za dalji razvoj i ona se realizuje u relevantnim oblastima politike kako bi se postigli postavljeni ciljevi, pri čemu se resursi moraju dobijati i koristiti na održiv način. Strategija treba transparentno da istakne mogućnosti i izazove, stvori preduslove, razjasni uloge i ...
    strategija upravljanja, mineralni resursi, rezerve, rudarstvo, geologija.
    ... -global-lithium-supply-chain/30827/ [4] Geopolitics of the Energy Transition: Critical Materials. (2023). International Renewable Energy Agency (IRENA). Dostupno na: https://www.irena.org/Publications/2023/Jul/Geopolitics-of-the-Energy- Transition-Critical-Materials [5] Draft United Nation Resource ...
    ... Economic and Social Counsil), Ekonomska komisija za Evropu (engl. Economic Comission for Europe (ECE) /ENERGY/GE.3/2022/5), Komitet za održivu energiju (cngl. Commiftete on Sustainabile Energy) i ekspertska grupa za upravljanje resursima (engl. Expert Group on Resource Management) su u aprilu 2022 ...
    ... The strategy for managing mineral and other geological resources on sustainable and holistic foundations serves as the basis for government policy related to geological research and the exploitation of mineral resources, in accordance with its legal and regulatory obligations. The establishment of the ...

  • 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 ...
    ... developed by the National Library of Serbia. It contains terminology in Serbian, English and German, related to theory and practice of librari- anship and information sciences and a wide range of close or related fields. Table 2. Frequencies of terms of different lengths in samples from 3 termbases ...
    ... from the domain, but it also has to be adequately described, for instance, in the form of e-dictionaries. The field of terminology is strongly related to research on multiword terms, which relates closely to MWEs (Baldwin & Kim, 2010; Frantzi et al., 2000). An analysis of terms from technical ...

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... method for aligning the synsets of the two wordnets, such as the ILI. Automatic alignment of synsets belonging to different languages is closely related to the task of pairing their word senses. This approach was followed by Matuschek and Gurevych (2013) who solved the word sense alignment (WSA) task ...
    ... resulted in both the addition of new synonyms to existing synsets, and in the creation of new synsets. There were also some interesting approaches related to Slavic languages. Vintar and Fišer (2017) proposed a method to enrich the Slovenian WordNet (sloWNet) with domain-specific single and multi- ...
    ... safe;siguran The Dictionary of Library and Information Sciences4 is a terminology dictionary that covers the library and information sciences and related disciplines in Serbian, English and German, developed at the National Library of Serbia (Kovačević et al., 2004) (further referred to as Biblio) ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • An Approach to Development of Bilingual Lexical Resources

    Stanković Ranka, Obradović Ivan, Trtovac Aleksandra (2012)
    ... optionally classified into one or more categories such as librarianship or informatics, their subcategories, or categories belonging to other related scientific areas. This classification is modeled by the SynsetCategory class using the appropriate category codes. Thus, for example, the synset ...
    ... establishing a relation between a synset and its counterpart in another language, is simply realized by selecting the pair of synsets to be related, and then clicking on the two arrows symbol. Figure 3: Part of the web page for Biblimir input. 4. DEVELOPING BIBLIMIR We applied Bibliša ...

  • Application of Expansive Mortars for the Formation of Artificial Screens During Blasting in Urban Areas

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Nikola Simić, Jelena Majstorović (2024)
    During construction of buildings in urban areas, sometimes there is a need to blast solid rock mass in the immediate vicinity of the surrounding buildings. In that case, the aim is not only to increase the efficiency of blasting, but also to reduce harmful effects of ground vibration induced by blasting. At the same time, it is very important to protect the buildings located in the safe zone from the blast site as well as remaining rock mass around ...
    expansive mortar, artificial screens, pressure, rock breaking, building foundation

  • Numerical modelling of a single intra-oceanic subduction for the origin of the Balkan ophiolites

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... all overnight precipitates can be noticed the occurrence of peaks between 3650–3250, 1600, 1550−1480, and around 600 cm−1 which are amino-related and organic-related peaks. This suggests that the nutrient medium was not used completely after 24 h, while these peaks were less pronounced after the incubation ...
    ... capability in soils, freshwaters found in lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater and saline habitats has been related to the formation of different minerals around living cells under varied environmental conditions. Due to this fact, these bacteria represent resourceful ...
    ... capability in soils, freshwaters found in lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater and saline habitats has been related to the formation of different minerals around living cells under varied environmental conditions. Due to this fact, these bacteria represent resourceful ...

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... system of brittle, dextral strike-slip faults (Fss in Fig. 2). Movement along these faults can be concluded based on the Riedell’s plains and folding related to the faulting process. The amount of displacement along the Fss system could not be established with precision but is probably in the range of ...
    ... A second group of ob- served faults has a more localized influence on the succession. These faults (Fn in Fig. 2) have normal movements and are related to the Fss fault zone probably as a part of a transtensional system. As the excavation works in the quarry progressed, different levels of the ...
    ... 10f–h) and D. Such distribution of the trace fossils VALA & PAN, 2018). In the mentioned genetic model (ZAVALA & ARCURI, 2016), facies families are related to the main pro- cesses governing deposition from the sustained hyperpycnal dis- charge: (1) deposition of coarse-grained material which is dragged ...

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Analiza mogućnosti primene tehnologije hvatanja i skladištenja ugljenika (CO2) na objektima Nis-A

    Isidora Veljanoski (2024)
    U ovom radu opisana je primena CCUS tehnologija u kompaniji NIS i na koji način treba da se optimizuje da bi projekat bio rentabilan.U prvom i drugom poglavlju opisani su energetski trendovi i tranzicije, razvojni mehanizmi za regulisanje emisije gasova staklene baste i o ugljen-dioksidu kao hemijskom jedinjenju i šta je to CCUS.U trećem, četvrtom i petom poglavlju je detaljnije opisano izdvajanje, hvatanje, transport i skladištenje ugljen-dioksida.Šesto poglavlje i sedmo poglavlje obuhvataju rešenja za razvoj i realizaciju CCUS projekata ...
    energetski trendovi, ugljen-dioksid, CCUS, izdvajanje, hvatanje, transport i skladištenje CO2, ležište, ekonomija projekta
    ... 36 Historical emissions . Emissionstargets 100Mt 0 1946 1950 1954 1958 1962 1966 1970 1974 1978 1982 1984 1990 1994 1998 2002 2006 2010 2014 2018 2022 202 2031 e Energy X _ 0 industrialProcessesand ProductUse x — & Agriculture x · & Waste x % Estimated quantified emissions targets Slika 7 ...
    ... Technology for CO- capture: On the important roles of energy integration and sorbent behavior. 61 Applied Energy, Volume 162, (2016) [12] A. Basile, S. Pereira Nunes, Advance Membrane Science and Technology for Sustainnable Energy and · Environmental — Applications,. URL: https://www ...
    ... ranoj fazi, neophodno je razmatrani su glavni rizici koji umanjuju mogućnost realizacije. 60 Literatura [1] B. Marr, URL: The Five Biggest New Energy Trends In 2022 (forbes.com) (5.6.2024) [2] D. Y. C. Leung, G. Caramanna, M. Mercedes Maroto-Valer, An overview of current status of carbon dioxide ...

  • Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis

    Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović (2017)
    U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...
    Omeka, Wordnet, pretraga punog teksta, morfološka i semantička pretraga teksta, proširenje upita
    ... The Academy of Criminalistics and Police Studies, Criminal code of Serbia, the “Tara” and “Reiss” conferences, and from some of PhD dissertations related to this field of research. After text processing, a corpus containing over 5500 pages of plain text is created and prepared for publication as an ...
    ... The Academy of Criminalistics and Police Studies, Criminal code of Serbia, the “Tara” and “Reiss” conferences, and from several PhD dissertations related to this field of research. The text that is not in Serbian language was removed, as well as tables, figures, references and links, as usual preparation ...

  • Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities

    Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov (2024)
    Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...
    полилексемске језинице, именовани ентитет, вишезначност значења речи, складиште смисла, LLOD

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik