Претрага

Упит dcterms_subject_txt:Electrical and Electronic Engineering

2240 items

  • Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines

    Ugljesa Bugarić, Milos Tanasijević, Stevan Djenadić, Dragan Ignjatović, Ivan Janković (2022)
    This paper presents the model for the identification of reference points on the lifetime curve of engineering systems. This curve commonly represents the increase and decline of failure in relation to time. A direct correlation between failure rate and costs is assumed in this paper, therefore, statistical and empirical analysis of costs provided reference points. This approach is used for positioning stages of the engineering system’s lifetime with a minimal number of failures and costs, regardless of whether these ...
    Electrical and Electronic Engineering,Industrial and Manufacturing Engineering, Control and Optimization, Mechanical Engineering, Computer Science (miscellaneous), Control and Systems Engineering

  • Novel cerium and praseodymium doped phosphate tungsten bronzes: Synthesis, characterization, the behavior in the Briggs-Rauscher reaction and photoluminescence properties

    Tijana Maksimović, Pavle Tančić, Jelena Maksimović, Dimitrije Mara, Marija Ilić, Rik Van Deun, Ljubinka Joksović, Maja Pagnacco (2023)
    Due to the interesting and potentially useful properties, phosphate tungsten bronzes are constantly being studied and attract a lot of attention. In the present work, two different metallic elements, belonging to the group of rare-earth metals, cerium and praseodymium, were used as a dopants for phosphate tungsten bronzes. Novel cerium and praseodymium doped phosphate tungsten bronzes were successfully synthesized and further characterized by thermal analyses, Fourier-transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer and ...
    Electrical and Electronic Engineering, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Spectroscopy

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom

    Lidija Beko, Ivan Obradović, Ranka Stanković (2015)
    ... Stanković | Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, May, 22-24, 2015, Niš, Serbia, Faculty of Electronic Engineering, University of Niš | 2015 | | http://dr.rgf.bg.ac.rs/s/repo/item/0001754 Дигитални репозиторијум ...
    ... 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 Second International Conference on Teaching English for Specific Purposes Faculty of Electronic Engineering University ...
    ... rs/profesor.php?id=219&lang=sr vocabulary with different techniques and heard them complaining about the difficulty of finding the best and most effective way to adopt demanding academic vocabulary and very challenging and complex engineering terminology. Vocabulary development of Serbian learners of English ...

  • Size–strain line-broadening analysis of anatase/brookite (TiO<sub>2</sub>)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović (2022)
    A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results ...
    Materials Chemistry, Metals and Alloys, Atomic and Molecular Physics, Optics, Electronic, Optical and Magnetic Materials

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • 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

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... underground and surface excavation, prepa- ration of mineral raw materials, as well as rock and soil mechanics in five languages was published in 1970 [14]. This dictionary also contains terms from the fields of geology, metallurgy, electrical engineering, mathematics with computational methods, and civil ...
    ... Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom. In Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, Niš, Serbia, 22–24 May 2015; Faculty of Electronic Engineering, University of ...
    ... included, for example, 2398 (20%) entries related to geology, hydrogeology and geography, 860 (7%) entries related to transport, rock mechanics, surveying, environment protection, safety, construction, transport and electrical engineering, while 3082 (26%) entries belong to the general technical terminology ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... of efficient and flexible database search and information extraction on the web is growing each day, performance of the search related to mining engineering data can be greatly improved by the use of RudOnto in query expansion [10]. Given the variety of applications of RudOnto and in view of ...
    ... specific domains in electronic format is growing with the rapidly expanding availability of various texts on the web. First and foremost, they are indispensable in information an document retrieval systems. In addition to monolingual resources, machine translation systems and cross- language information ...
    ... to the level of a thesaurus, and possibly an ontology, as anticipated by its name. The current version of RudOnto contains close to 7000 general concepts that are most frequently used in mining engineering practice, with approximately 1600 English equivalents, and occasional translations to other ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... flex- ible in relation to various precise models and tools used in environmental engineering and other areas based on scientific postulates of environmental impact assessment (EIA) [50– 53], the challenge was to select the appropriate techniques and methodology for assess- ment in the SEA process ...
    ... of the planning area; 3. The international standard ISO 9613 [59], with input settings and settings specially adapted to the assessment of noise from wind farms. The ISO 9613 standard specifies an engineering method for calculating noise at a known distance from a variety of sources under mete ...
    ... , hospital zones and convalescent homes, cultural and historical sites, large parks 50 40 2 Tourist areas, camps and school zones 50 45 3 Residential areas 55 45 4 Business/residential and commercial/residential areas and children’s playgrounds 60 50 5 Town/city center, business, adm ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... various mining engineering systems most often in the form of information systems, with the basic goal to secure reliable information for managers and decision makers. In addition to that, different ICT support systems and tools have been developed and implemented, such as diagnostic and prognostic ...
    ... applied, which safety measures were followed, and the like. The medical report on the injury is also entered into the electronic form, and its most important parts are the classification of external causes of injury, injury severity assessment and specification of part or parts of the body that ...
    ... University of Belgrade Faculty of Mining and Geology research team in the development of a business intelligence system for accident analysis in mines. Mining engineering, as all other engineering disciplines, generates large amounts of heterogeneous data and needs interoperability among various ...

  • Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report

    Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)
    Landslides, Extreme precipitation, Data analysis, IPL project report

  • 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
    ... of Serbian — Automata, Text and Electronic Dictionaries. Belgrade: Faculty of Philology, 2008 Krstev, Cvetana, Gordana Pavlović-Lažetić and Ivan Obradović. “Using Tex- tual and Lexical Resources in Developing Serbian Wordnet”. Romanian Journal of Information Science and Technology Vol. 7, no. 1–2 ...
    ... the de- velopment of the Vebran web services and their application to corpus search improve- ments. The Vebran web services are used to consult external lexical resources for Ser- bian (mainly electronic morphological dictio- naries and Serbian Wordnet) and expand user queries to retrieve more relevant ...
    ... through projects ON-178006 and III 47003. References Andonovski, Jelena, Branislava Šandrih and Olivera Kitanović. “Bilingual Lexical Extraction based on Word Alignment for Improving Corpus Search”. The Electronic Library Vol. 37, no. 2 (2019): 722-739 Evert, Stefan and The OCWB Development Team ...

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... e-dictionaries and local grammars in the form of Finite-State Transducers (Krstev 2008) and implemented in the Unitex corpus processing suite1. Electronic morphological dictionaries of Serbian intended for automatic processing have been undergoing development for many years now, and their current ...
    ... textbook and tree high school ones, while physics is represented by one primary school textbook. General technique is represented by three textbooks for professional/vocational technical schools relating to the following subjects: power engineering, mechanical engineering for agriculture and tools and ...
    ... grammar 1 Introduction In the age of electronic lexicography, in which the goal is fast production of dictionaries and the products derived from them, special attention is paid to automatic or semi-automatic performance of some tasks. The use of electronic dictionaries can speed up the work on ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... streams and written material. In order to facilitate the use of these materials in a multilingual environment, a language support system is integrated into the BMP, consisting mainly of electronic terminological resources and services. This system will greatly improve the search and browse ...
    ... WB languages, English and Russian are also envisaged, as well as other languages satisfying specific conditions, namely, that electronic language resources are available for them. This multilingual approach is a combined effect of globalization and European integration, and represents a holistic ...
    ... language support system will also improve the search and browse functions of BMP. The BMP language support system, whose structure is outlined in Figure 3, is based on electronic language resources, namely, lexical resources, textual resources and grammars. The simplest multilingual lexical resources ...

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... processing of Serbian consisting of lexical resources and local grammars are being developed using the finite-state methodology as described in [1], [2]. The role of electronic dictionar- ies, covering both simple words and multi-word units, and dictionary finite-state transducers (FSTs) is text tagging ...
    ... hydrogeology and engineering geology. Users of published information, professionals or ordinary citizens, can use this geo-portal for search and access to information they need. The content on the portal can be grouped into several categories: cartographic content, multimedia, dictionaries and textual databases ...
    ... was trained on a corpus that differs significantly from our collection, and additionally it does not take into account MWUs. The approach described in this paper bases lemmatization on morphological electronic dictionaries and finite state transducers for Serbian [6]. 4.1 Used Resources Lexical ...

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... concepts and terms. geolISSTerm can be an elementary electronic resource in the process of domain formation in the geologic Information System of Serbia (geolISS). As such, it is the core of geolISS through which validation, classification and specification of at- tributes of the observed and the interpreted ...
    ... terminology and nomenclature. The main aim of the development of this electronic resource was the creation of a standard dictionary of geologic terms for the purpose of providing logically consistent description, interpretation and classification of geological units, geologic structure, mineral and hydrological ...
    ... Belgrade 5 ministry of the environment, mining and Spatial Planning of the republic of Serbia Translated from Serbian by Jelena Bajić ScIeNTIFIc PAPer UDc 55:001.4:004.9(038) Abstract: This paper presents the structure and implementation of the electronic diction- ary of geologic terms (geolISSTerm) ...