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Упит dcterms_subject_txt:mathematical transformation

139 items

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • 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

  • Production information system of the Pljevlja coal mine

    Božo Kolonja, Ranka Stanković, Filip Vuković (2018)

  • 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
    ... ducts (Christidis, ; Abdelmalek et al, ). The XRPD traces of the oriented clay fractions of the investigated samples are presented in . The transformation of kaolinite into meta- kaolin is observed with the disappearance of the reflection at 12.3%20 (7.1 A) after heating at 500% (Bergaya & Lagaly ...
    ... 1939; Grim & Rowland, 1944). The broad endothermic event at between 550% and 650% represents dehydroxylation of kaolinite and halloysite and transformation to amorphous metakaolinite and metahalloysite, but it could also be indicative of illite minerals (Norton, 1939; Speil et al., 1945; Foldvari ...

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... 0.34 (34%) Fossil fuel inputs = = (13) Combined heat and power plants efficiency. For the purpose of calculating the effi- ciency of energy transformation for combined heat and power plants, aggregate data of pro- duced electricity and heat was used: 1b Gross production of electricity and heatTM ...
    ... efficiency, primarily in electricity production and distribution y Increase the use of RES y Diversification of energy sources used in energy transformation, as well diversification of imports directions These activities have simultaneous positive effects to different dimensions of avail- ability ...

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... case of sintered samples, different barioferrite-like phases were formed. However, spinel and tetragonal BaTiOs phases remain unchanged. The transformation of BaTiOs from P4Amm to P4/mmm space group Was observed at 1300 ?C in all studied cases. Inorganics 2023, 11, 51 3of 19 as-prepared In ...
    ... high-temperature range, the values of high-frequency tangent loss increased due to the defects in the material, including oxygen vacancies and transformation of BaTiOa from P4mm to P4/mmm space group, Figure 9. From the AC Tnorganics 2023, 11, 51 11 of 19 conductivity spectra, presented in Figure ...
    ... amount of conductive phases in the composites (see Figure S1 and Figure 3, and Table 1). The increase in temperature up to 1300 "C led to the transformation of BaTiOa rom P4mm to P4/mmm space grroup in all three cases, Table 1. The highest amount of non- centrosymmetric phase was observed for BaTiOa/ ...

  • Developing Termbases for Expert Terminology under the TBX Standard

    http://drug.rgf.bg.ac.rs/s/repo/item-set/522 (2014)
    ... Portability Special attention was given to portability, simple and speedy transformation of subsets of concepts from terminological resources described in Section 2 to TBX, OLIF, OWL, RDF, LMF or MOODLE. This transformation has been secured by a wizard integrated in the terminological information system ...
    ... as well as the role of the TermBase eXchange (TBX) standard in this approach. Namely, paying special attention to portability, simple and speedy transformation of subsets of concepts from termbases as central resources in a custom in-house scheme to standard formats such as TBX has been provided, by a ...
    ... kometare (ALLOWCOMMENTS) |_| Ako se podudaraju iskljucivo cele reci (FULLMATCH) Fig. 7: Module for export from RudOnto into standard formats Every transformation of termbases must take into account morphological information contained in these dictionaries. Thus in the case of TBX the TBX- default version ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... Porteous, C. Methodology to determine the optimal replacement age of mobile mining machines. Third International Platinum Conference ‘Platinum in Transformation’, The Southern African Institute of Mining and Metallurgy, 2008, pp. 297-305. Life Cycle Asset Management, Life Cycle Engineering, Inc. Available ...

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... environmental quality, those suitable for the field of energy transformation. According to the above-mentioned proposals, and customized to the energy-ecological problems, one should: • examine and assess the adverse effects of the energy transformation on the environment; • anticipate environmental risks; ...
    ... make rational use of natural resources; • develop ecological ethics; and • develop a consumer behavior, i.e., take into account the impact of the transformation of energy on the environment. Consistent application of monitoring the interactions in “society-environment” system, whether it is on supervisory ...
    ... mining and energy complexes and risk prediction are the basis for establishing sustainable development principles [12]. The goal is to enable the transformation of coal energy with less environmental degradation through moderate development and preservation of natural resources [13]. Environmental and economic ...

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • Proučavanje razvića Bihaćkog i Cazinskog basena primenom gravimetrijskih podataka

    Snežana M. ignjatović, Ivana M. Vasiljević, Nevena R. Andrić-Tomašević, Ana S. Mladenović (2024)
    Bihaćki i Cazinski baseni su neogeni baseni, koji pripadaju spoljašnjim Dinaridima i formirani su tokom kasne faze razvoja Dinarida. Ovi baseni su od posebnog interesa zbog svoje geološke prošlosti i potencijalnih strukturnih karakteristika. U istraživanju, primenjeni su gravimetrijski podaci u clju boljeg razumevanja evolucije ovih basena. Primenom različitih postupaka matematičkih transformacija na gravimetrijskim podacima može se ustanoviti gravitacioni uticaj neogenih basena male gustine i mogu se detektovati strukture, koje su potencijalno vezane za njihovo formiranje. U ovom istraživanju, analiza ...
    matematičke transformacije podataka, kontakti, neogeni baseni

  • An Italian-Serbian Sentence Aligned Parallel Literary Corpus

    Saša Moderc, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić (2023)
    This article presents the construction and relevance of an Italian-Serbian sentence-aligned parallel corpus, delving into the aligned sentences in order to facilitate effective translation between the two languages. The parallel corpus serves as a valuable resource for language experts, researchers, and language enthusiasts, fostering a deeper understanding of linguistic nuances and cultural expressions. By bridging the gap between Serbian and Italian, this corpus opens new avenues for cross-cultural communication and collaboration, and ultimately contributes to the improvement of language-related ...
    Aligned corpus, parallel corpus, Serbian, Italian, literature

  • 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
    ... Natural Language Processing,” Notes for ENLP tutorial held at AIED 2009 in Brighton, Jul, 2009. [2] J. M. Balkin and J. Sonnevend, “Digital Transformation of Education (April 4, 2016),” in Education and Social Media: Toward a Digital Future, 2016, Forthcoming, C. Greenhow, J. Sonnevend and C. Agur ...

  • Softverski alati za korišćenje resursa za srpski jezik

    Ivan Obradović, Ranka Stanković (2008)
    ... of parallel texts which have previously been aligned using the text alignment tool XAlign (Bonhomme et al., 2001). The module enables the transformation of texts aligned by XAlign into different formats: textual, XML, tabular or Translation Memory eXchange (TMX) format5. Besides, the user can ...
    ... to Cyrillic alphabet, as well as in converting graphs. When conversion of resource format is concerned, then it is most often the case of a transformation of resources such as dictionar- ies, graphs and regular expressions from a format SOFTWARE TOOLS FOR SERBIAN LEXICAL RESOURCES 52a ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Assessments of effects of implementation of strategic plans for development of Belgrade District heating system

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić (2020)
    The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...
    Daljinsko grejanje, LEAP, Primarni energetski faktor, Uvozna zavisnost, CO2 emisija

  • FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... Part A, 66, 1180—1188. DOI: 10.1016/J.saa.2006.06.005 Hladik, M.L., Roberts, A.L., Bouwer, E.J. 2006. Chloroacetamide herbicides and their transformation products in drinking water. American Water Works Association. Environmental Protection Agency. USA. Jović-Jovičić, N., Milutinović-Nikolić ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • A WordNet Ontology in Improving Searches of Digital Dialect Dictionary

    Miljana Mladenović, Ranka Stanković, Cvetana Krstev (2017)
    In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...
    ... (the infini- tive, for example upropastiti). Two corresponding examples obtained alter the second step are (the infinitives generated by the transformation process are given in bold): isabim | isabi; ја isabi; 1 isabi; isabija; iskvarim_iskvariti; upropastim_upropastiti ačkam | ačkaj; ačkašem; ...