Претрага

Упит dcterms_subject_txt:mathematical transformation

139 items

  • Solid state synthesis of extra phase-pure Li4Ti5O12 spinel

    Ivana Veljković, Dejan Poleti, Ljiljana Karanović, Miodrag Zdujić, Goran Branković (2011)
    Фазно чист спинел Li4Ti5O12 са величином честица мањом од 500 nm добијен је реакцијом у чврстом стању из стехиометријске смеше наноанатаса (ТiО2) и Li2CO3 која је претходно активирана механохемијским поступком. Реакција у чврстом стању у потпуности се завршава за само 4 часа на температури од 800 ºC. Уз помоћ XRPD, SEM и TG/DSC анализе испитане су структурне и микроструктурне карактеристике добијеног спинела, механизам реакције између анатаса и Li2CO3, као и термичка стабилност Li4Ti5O12. Реакција започиње разлагањем Li2CO3 на температурама ...
    дифракција рендгенских зрака, механизам реакције, термичка стабилност, Li4Ti5O12, спинел, фазно чист узорак

  • EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School

    Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković (2021)
    Prva škola za obuku polaznika koju je organizovala COST akcija NexusLinguarum održana je od 8. do 12. februara 2021. godine sa ciljem da studenti, istraživači i stručnjaci nauče osnove lingvističke nauke o podacima. Tokom obuke polaznici su se upoznali sa širokim spektrom tema: od semantičkog veba, RDF -a i ontologija, do modeliranja i pretraživanja jezičkih podataka pomoću najsavremenijih ontoloških modela i alata. Škola je održana u okviru serije letnjih škola EUROLAN-a i organizovalo ju je virtuelno (onlajn) nekoliko instituta; ...
    nauka o lingvističkim podacima, povezani podaci u lingvistici, jezički podaci, EUROLAN, NexusLinguarum, COST akcija, škola za obuku
    ... Professional paper – Metadata: DCAT (Data Catalog Vocabulary),6 VOID (RDF Schema vocabulary for expressing metadata about RDF datasets, etc.); – RDF transformation and validation; (Cimiano et al. 2020) – Linguistic linked data; (Chiarcos et al. 2013) – Lemon-OntoLex7 (McCrae et al. 2017; Declerck, Tiberius ...
    ... beauty of the Romanian culture, traditions and nature. The fifth day comprised three parallel sessions on different topics: (i.) LLD Generation/Transformation and Linking, (ii.) Annotations (NIF, Web Annotation) (Hellmann et al. 2013), and (iii.) OntoLex extensions: vartrans for representing translations ...
    ... Challenges for Wordnets. CEURS, vol. 8. Fäth, Christian, Christian Chiarcos, Björn Ebbrecht, and Maxim Ionov. 2020. “Fintan-flexible, integrated transformation and annotation engi- neering.” In Proceedings of the 12th LREC, 7212–7221. Gracia, Jorge, Elena Montiel-Ponsoda, Daniel Vila-Suero, and Guadalupe ...

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... need to be transformed into this format. Ever since some initial retro-digitization projects, such as the transformation of the Oxford English Dictionary (Berg et al., 1988), the transformation from an unstructured to a structured text was recognized as the main task of such endeavors. To do this ...
    ... non-Unicode character sets were used with non-standard accents and other forms of character encoding. All three available formats needed additional transformation: conversion, transliteration (where the Latin alphabet was used instead of Cyrillic) and extensive manual postediting. After the implementation ...
    ... исп. expressions анат./бот./вој./ист./ 1 2 3 4.1 4.2 4.3 4.4 4.5 4.6 5 6 4 Figure 1: The microstructure of dictionary articles. 4 The transformation from the dictionary article text form to the lexical database The guidelines for dictionary writing were used to defi ne the rules for the ...

  • 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
    ... of the transformation, a new file is formed. In it, each new line represents a new document: it begins with the title of the document (without extension) followed by a semicolon, and all the concept identifiers found in it separated by commas (Figure 8). We will illustrate the transformation of one ...
    ... generated file, it was possible to directly transform the list from the file directly to C# function that would do it. This is achieved by through transformation of the CSV file. Character ; was replaced with string ", " and strings doc = doc.Replace(" and "); were pasted onto the beginning and the end of ...
    ... finite state machines and transducers to solve this problem, which is more complex to implement but performs faster in processing this type. Transformation of documents into concept vectors (surrogate cre- ation) After the documents were successfully annotated with the identifiers of concepts that ...

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing; above 800 "C. Examination of freshly fractured pieces shows a nonbrittle fracture ...
    ... different raw materials and/or different relative amounts of fibers and clay used in the preparation and also from different degrrees of reaction/transformation under heating,. 2000 H 1500- 8 š ž Fi 1000- E 500- ok——— | Tremolite, 01-086-1319. j | i I\\\„\M ML _L ı . j ıl | I[SWVi | THE ...
    ... !) is observed in all samples, especially in samples a (Figuure 7) and c (Figure 8). This carbon can arise from different origins: (i) the transformation of organic residues during the use of the utensils, (ii) the use of carbon-rich clays (clays with organic (humic) acids exhibit a high plasticity) ...

  • Funkcionisanje i uticaj epikarsta na režim, bilans i kvalitet podzemnih voda istočnog dela karstnog sistema Suve planine

    Branislav Z. Petrović (2020)
    Epikarst je deo karstne izdani koji se nalazi u okviru nadizdanske zone i predstavlja kompleksnu tačku dodira i mešanja nekonsolidovanog materijala sa površine terena, ostataka karbonatnih stena izmenjenih korozivnim delovanjem vode, živog sveta i njihovih ostataka, koja je delimično zasićena podzemnom vodom. Kompletan sud o stepenu razvoja i prisustva epikarsta na nekom krečnjačkom terenu moguće je doneti uz multidisciplinarna i obavezna detaljna hidrogeološka istraživanja. Poligon za sprovedena istraživanja je bio karstni masiv Suve planine, koja u geološkom i geografskom smislu ...
    epikarst, karstni sistem, podzemne vode, procesi samoprečišćavanja, hidrohemijski i mikrobiološki procesi u podzemnoj vodi

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... finite state automata (FSA) can be used for complex queries. Moreover, finite state transducer FSTs (FSAs with output) can be used for text transformation. The concept of e-dictionaries and software that enables their effective use was developed at LADL (Laboratoire d' Automatique Documentaire ...
    ... topics in the use of graphs are given, e.g. subgraphs and input variables. The later topics enable development of transducers for input text transformation. Methods for organizing large collection of graphs are presented. Some representative examples of graph use are shown. 7. Special types ...
    ... transducers. More types of variables are introduced as well as operations on them. 11. Organization of graphs in cascades enables complex text transformation. Each graph in a cascade is a transducer that transforms a text. A graph that follows works on this transformed input. A full Named Entity ...

  • Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja

    Branko Kostić, Dejan Prelević, Sabina Kovač, Ksenija Eraković, Dragana Životić (2022)
    Ugljevi niskog ranga – ligniti u Republici Srbiji predstavljaju glavnu energetsku sirovinu koja se koristi za proizvodnju električne energije. Rudarstvo u Srbiji doprinosi bruto dodatoj vrednosti sa 1,8% (2020; https://publikacije.stat.gov.rs/). Sagorevanjem ugljeva niskog ranga u termoelektranama generišu se velike količine elektrofilterskog pepela i pepela, koje često predstavljaju jedan od izvora zagađenja životne sredine usled sadržaja toksičnih elemenata. Dalja upotreba produkata sagorevanja zavisi od njihovog sastava i sadržaja toksičnih mikroelemenata. Svakodnevno sagorevanje lignita u termoelektranama uslovljava konstantan monitoring potencijalno toksičnih ...
    ugalj, produkti sagorevanja, XRF, ICP-MS

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... software implementation of this resource, whereas in Section 4 we describe the mechanisms by which RudOnto, as a central resource, can be used for transformation of subsets of its concepts to ontologies for specific areas of mining engineering using OWL (Web Ontology Language). The final section features ...
    ... constructive characteristics of a bucket-wheel excavator 4. RUDONTO TO OWL RudOnto, as the central terminological resource can be used for transformation of subsets of its concepts to several specific formats, namely OWL, Moodle, TBX, RDF and LMF, thus generating specialized terminological resources ...
    ... generating terminology for the FMG e-learning platform Moodle, and we will describe here how it can be used for production of OWL ontologies. The transformation is performed by a wizard, which is an integral part of the information system. Figure 7 depicts a panel from this wizard. The subset of concepts ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... be shared within this model, and it can also serve as a framework for web based integration of multiple tutors. However, realizing that the transformation of Moodle glossaries to proper language resources is a long term goal, we concluded that at least the development of Moodle glossaries in parallel ...
    ... concepts into this format. To that end we have developed a mechanism which we describe in the following section. 4. RUDONTO TO MOODLE GLOSSARY Transformation of subsets of concepts from RudOnto as the central resource to a Moodle glossary is simple and speedy due to a wizard integrated in the information ...
    ... to transform Moodle glossaries by adding more features to them that will make them proper terminological resources. Until this is achieved, transformation of subsets of concepts from external terminological resources to Moodle glossaries, despite its imperfection, can still be realized in a moderately ...

  • Репозиторијум дигиталних идентификатора објеката – доиФил: изградња, стање и перспективе

    Милош Утвић, Михаило Шкорић (2017)
    Филолошки факултет Универзитета у Београду је крајем јула 2015. године склопио уговор са агенцијом Crossref и тиме стекао право да својим публикацијама додељује дигитални идентификатор објекта (DOI), као и публикацијама других издавача које заступа. Истовремено, у склопу уговора, Филолошки факултет је развио репозиторијум доиФил који за све регистроване публикације чува њихове библиографске метаподатке, хипервезу ка комплетном тексту и сам DOI. После припремних радњи и разраде процеса на којима је заснован рад репозиторијума, у новембру 2016. године је репозиторијум доиФил ...
    DOI, дигитални идентификатор објекта, Crossref, Филолошки факултет
    ... sourceforge.net/ (приступано 1.3.2019). PHP, http://php.net/ W3C. Standards. Web Design and Applications. XML Technology. Transformation https:// www.w3.org/standards/xml/transformation (приступано 1.3.2019). Литература DOI® Handbook. https://doi.org/10.1000/182 (приступано 1.3.2019). ISO 26324:2012(en) ...
    ... упућује на PDF-верзију публикације), приступа се контроли метаподатака анализом приступне странице, односно 15 https://www.w3.org/standards/xml/transformation 16 http://php.net/ 17 https://docs.microsoft.com/dotnet/csharp/language-reference/ 86 BIBLIOINFO упоређивањем њеног садржаја са PDF-верзијом ...

  • Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik

    Stefan Petrović, Aleksandar Pačevski, Viktor Bertrandson Erlandson, Rade Jelenković (2022)
    Rudnomikroskopska, SEM-EDS i LA-ICP-MS ispitivanja rudne mineralizacije iz Pb-Zn-Cu-(Ag) ležišta Rudnik, ukazala su na lokalno prisustvo specifične asocijacije minerala nikla, srebra i kalaja, deponovane u tektonskoj breči, arsenopiritsko-pirotinskim, piritsko-pirotinsko-arsenopiritskim i kvarcno-sulfidnim žicama u harcburgitima. U tektonskoj breči deponovan je polimineralni sulfidni agregat kojeg čine pirotin (50), galenit, sfalerit i halkopirit. Arsenopiritsko-pirotinske žice odlikuje dezintegrisani agregat arsenopirita cementovan sa pirotinom. U piritsko-pirotinsko-arsenopiritskim žicama masivni pirit (50%) prorasta sa arsenopiritom i cementovan je polimineralnim agregatom pirotina, galenita i sfalerita. Minerali nikla, srebra ...
    Rudnik, ferokesterit, argentopentlandit, harcburgit, rudne žice

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... determined at 298 K and 100 K, respectively, are related by the following 4 by 4 transformation matrix: �1 1 0 0 �1 �1 0 0 0 0 1 1 2 0 0 0 1 0 B B @ 1 C C A Amore detailed understanding of the phase transformation in K3YbSi2O7 can be achieved by symmetry-mode analysis. In the course of this ...
    ... structures of crystal 1 determined at 298 K and 100 K, respectively, are related by the following 4 by 4 transformation matrix: | — | — oro;9} Pur OO A more detailed understanding of the phase transformation in K;YbSi,O; can be achieved by symmetry-mode analysis. In the course of this procedure implemented ...
    ... method and subsequently structurally characterized. In the course of the temperature-dependent single-crystal diffraction experi- ments, a phase transformation of �-K3YbSi2O7 to a novel low-temperature orthorhombic phase (�0-K3YbSi2O7, space group Cmcm) has been observed at about 210 K. �-K3YbSi2O7 is ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... explicit, even prospective analysis, through the analysis of the individual components of the project [22][23], it is necessary to capture the ‘‘transformation processes that turn interventions into outcomes’’ [23] and thus, make evaluation findings robust, and reach of explanatory power. The function ...
    ... coherence of the project, is the coherence of the links among the elements of the project, like objectives, sub-objectives, results, effects and transformation functions (assumptions), on which the project rely on, and according to which the project will achieve its objectives and produce its effects ...

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... urbanization are determined as the main causes of air pollution 4. Emissions can be quantified at the level of total primary energy consumption, transformation or final energy consumption, while the special interest is dedicated to emissions related to electricity and heat generation, as well as from the ...
    ... storage, Agriculture, > Bl chapter sna coal ol.gas, process andtyreand——andiighting—transportand.” solvents and Doenergy’ emissions Toad wea, transformation waste > Bearers Ste and waste fuel evaporation of fossil fuels > DB Chapter 10: Africa © Bl Amenes Amer A Definitions [Taking each of the main ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... Table 3. NER&BEYOND contains nine different mod- ules: XML 7→ BRAT module supports transformation of XML files which tags are interpreted as named entities, to BRAT format; BRAT 7→ XML module supports transformation of files in BRAT format and their correspond- ing textual files to XML format; BRAT ...
    ... O Anica B-PERS Dobra I-PERS šarmom... O Table 5: CoNLL02 IOB format – the beginning of the sentence I was fascinated by Sonja Savić and her transformation, Anica Dobra and her charm... the second file if they intersect on at least one character; strict an annotation of the first file will be consid- ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... must be made within all sectors of the energy chain: production, transformation, and consumption. In thc previous period, morc attention was given to cvaluating, emissions of the main GHG ·«&teontibutors: the cncrgy transformation sector (for example, clectricity generation, and hcat production ...
    ... from non-combustion sources. Most of the emissions come from combustion, while a small amount arises as fugitive emissions from “cxtraction, transformation, and transportation of primary encrgy carriers. During combustion, most of the carbon is emitted as CO», with some released as carbon monoxide ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... downhole dynamogram with a high degree of reliability are sought. 3.3 Importance in evaluating pump performance Mathematical models, both analytical and numerical, enable the transformation of recorded values for stroke and load of the smooth rod at the surface (boundary and initial values) into stroke ...
    ... Wavelet transformation has gained popularıty for analyzing signals and images at VarioOus levels of detail. It represents a good alternative to Fourier transformation for analyzing dynamic signals or images. Unlike Fourier transformation, which relies on sinusoidal waves, wavelet transformation is based ...
    ... forces arising: from fluid movement through the tubing. Dynamic loads can result from various factors, among which the most common are: a) Transformation of the motor's rotational motion into vertical translational motion of the sucker rods b) Friction between the sucker rods and the tubing ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... sector has a decisive role in the energy transition to more sustainable energy systems. Transformation of the heating sector could substantially contribute to reaching goals of sustainable development. Transformation of energy systems should be directed toward ensuring reliable and affordable energy ...
    ... / Accepted: 26 February 2021 © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Transformation of the heating sector is recognized as being essential for ensuring reliable and affordable energy services provided with reduced consumption ...