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Упит dcterms_subject_txt:TE Nikola Tesla""

292 items

  • A Lexical Approach to Acronyms and their Definitions

    Cvetana Krstev, Duško Vitas, Ranka Stanković (2015)
    In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.
    ... derived from should not be lost. For instance, if an English segment Tesla filed a petition with NHTSA seeking approval. . . is translated into French by a machine-translation system as Tesla a déposé une requête auprès de la NHTSA d’obtenir l’approbation. . . then a French-speaking user will have problems ...
    ... future, we plan to apply our procedure to dif- ferent corpora in order to obtain more acronym-definitions pairs and to supply missing information concerning gram- matical and inflectional properties of acronyms. Moreover, we intend to improve our extraction procedure in order to improve the recall ...
    ... procedure as to lem- matize successfully less frequent MWU structures. We plan to develop procedures for the detection of semantic properties of acronym-definitions by looking into results obtained by this research. On the basis of the presented approach we plan to en- hance our approach to domain specific ...

  • 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

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... minerals, AP* ions are first released and then chemically bonded in synthetic Clay Minerals 67 120 In te ns it y Fig. 3. XRD traces of investigated samples. The numbers correspond to the d-spacings of the main diffraction maxima (A) of the phases present. B= brushite; G= gypsum; Q= quartz ...
    ... 2018). The concentration of ŠO varies according to the mineral origin, from 260 to 1860 Bq kg for apatite and from 460 to 640 Bq kg for phosphorite (Saueia, 1998). Through the manufacturing process, ~80% of ? 'Ra, 14% of ŠU and 30% of Th tend to be enriched in phosphogypsum, and the rest remains ...
    ... insoluble in water, in contrast to calcium sulfate, the recrystalliza- tion procedure was employed to improve gypsum purity, radio- activity level and colour. "The retrograde solubility of gypsum in water (slowly increasing, from 0 to 40%C, with a subsequent decrease from 40 to 100%; Rolnick, 1954; Amjad ...

  • Primena digitalne fotogrametrije u rudniku Rudnik

    Nikola Mirković, Luka Crnogorac, Katarina Urošević (2023)
    Digitalna fotogrametrija, lasersko skeniranje i virtuelizacija sve više pronalaze aktivne uloge u rudarstvu, prvenstveno zbog svoje široke mogućnosti primene. Laserskim skeniranjem i fotogrametrijom snimaju se i kreiraju 3D modeli otkopa, jamskih hodnika, površinskih kopova, površinskih objekata (zgrada, spomenika, predmeta), a vrši se skeniranje celih rudnika koji se rekonstruišu u 3D digitalne modele. Fotogrametrija predstavlja proces fotografisanja objekata pomoću fotoaparata i daljom obradom fotografija u različitim softverskim alatima kreiraju se realne kopije 3D modela objekata ili predmeta u digitalnoj formi. Za ...
    digitalna fotogrametrija, prostorna vizuelizacija, rudarski objekti, podzemna eksploatacija
    ... Primena digitalne fotogrametrije u rudniku Rudnik Nikola Mirković, Luka Crnogorac, Katarina Urošević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Primena digitalne fotogrametrije u rudniku Rudnik | Nikola Mirković, Luka Crnogorac, Katarina Urošević | XI ...
    ... that are open source were used. The results obtained in this research showed that by using the basic equipment (which does not require additional !Nikola Mirković, Rudnik i flotacija Rudnik doo Rudnik, Rudnik; e-mail: nmirkovic('contangorudnik.rs ?Luka Crnogorac, Univerzitet u Beogradu - Rudarsko-geološki ...
    ... vremena, s obzirom na to da su podešavanja postavljana na kvalitetniju obradu i proces obrade podataka trajao je više sati. 113 Drugom modelu postavljeni su minimalni parametri. Razlog je prethodno iskustvo sa izradom prvog modocla, kao i broj slika koji je unet, pa je na osnovu toga za drugi model utrošeno ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • Развој алгоритма процене ефеката ризика рада рударских машина на бази фази алгебре

    Dejan V. Petrović (2014-12-30)
    Појава изненадних отказа елемената техничких система у рударству је свакодневна појава...
    ризик, поузданост, технички систем, рударске машине, отказ, фази скупови, фази логика
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  • 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
    ... channels in the coal layers are used. Channels are used to accommodate the functioning, of reaction zones in the layer, to blowing the gasification agent into it, as well as to obtain gas. In order to successfully perform the UCG test, it is necessary to ensure the fracturing, of the coal layer that will ...
    ... increasing depth of layer laying. To be able to additionally strengthen the environmental aspect of UCG application in Serbia various additional renewable energy resources have been considered. The key one are solar photovoltaic systems that are proposed to be utilized to provide necessary onsite clean ...
    ... exploitation of groundwater. At hat time it is necessary to define what the priority is. The UCG should not be foreseen at all costs. Due to the lowering ofthe level of groundwater, there is an increase in the soil's own mass in the reduction zone, which leads to subsequent subsidence of the terrain ...

  • Sprega neuronskih mreža i numeričkih modela zadefinisanje sigurnih rastojanja kod razletanja komada pri miniranju

    Saša S. Stojadinović (2013-09-16)
    Doktorska disertacija sa navedenim naslovom prezentuje rezultate istraživanjaproblema razletanja komada pri miniranjima. Cilj istraživanja bio je kreiranje opšteg iuniverzalno primenljivog modela za prognozu maksimalnih dometa razletelih komada idefinisanje sigurnih rastojanja. Kombinacijomterenskih istraživanja, numerikogmodeliranja balistikih trajektorija razletelih komada i adaptivne prirode neuronskihmreža definisan je koncept neuro-numerike sprege. Sprega je objedinila univerzalnuprimenljivost numerikog modela i sposobnost prilagoavanja neuronskih mrežalokalnim uslovima u opšti model za prognozu maksimalnih dometa razletelih komada.Za potrebe sprege, a kao integralni deo disertacije, razvijen je metod za odreivanjekoeficijenta ...
    Razletanje, miniranje, domet, sigurna rastojanja, numeriki modeli,neuronske mreže, sprega, verifikacija
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  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... rk p la ce - in ta ke a ir - re tu rn a ir - st o p p in g w it h d o o r - m ai n f an - bo os te r fa n 5 .1 5 m / s 3 F ig . 1 5 . T h e a ir d is tr ib u ti o n o b ta in ed b y G A w it h b o o st er fa n lo ca ti o n . M in . R es . ...
    ... Approach to Mine Ventilation Planning in Yugoslav Mining Practice Nikola Lilić, Ivan Obradović, Ranka Stanković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice | Nikola Lilić ...
    ... entila tion s y s tem es tima tion v entila tion s imu la tion De s ig n CFD Estimates es tima tion o f gas and d u st emi s sion and temperature c onditions f low p roc es s modelling u sing CFD Dat a acqu is i t io n v entila tion and p s y chromet ri c parame te rs v entila tion and p ...

  • Палеогеографска реконструкција јадарског блокатоком млађег палеозоика

    Весна Цветков (2018)
    ... ог факултета Универзитета у Београду [ДР РГФ] Палеогеографска реконструкција јадарског блокатоком млађег палеозоика | Весна Цветков | Симпозијум Никола Пантић - човек и природа у спирали времена (90 година од рођења научника), Зборник радова | 2018 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005722 Дигитални ...
    ... што коинцидира са позицијом океанског простора који се формирао између Гондване на југу и Лауразије на северу током девона (MOREL & IRVING, 1981). У том новонасталом океану, који се простирао дуж зоне палеоекватора и јужније до 40 јгш, Јадарски блок је мигрирао за 228 у правцу севера тј. северозапада ...
    ... Beograd, 82-95 FILIPOVIĆ, I. (2005): Spatial distribution of geological resources in northwestern Serbia (Jadar block terrane) and its relation to tectonic structures. Annales geologiques de la Peninsule balkanique, 66, 17- 20 KARAMATA, S., OLUJIĆ, J., PROTIĆ, LЈ., MILOVANOVIĆ, D., VUJNOVIĆ, ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... Dejan Stevanović, Nikola Živanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Determination of Mechanical Properties of Altered Dacite by Laboratory Methods | Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović | Minerals ...
    ... samples. Using plaster to connect separate discs [4] was shown as inadequate due to plaster failure at lower loads, causing the discs to displace and introducing non-uniform stress distribution throughout the disc interfaces. Tziallas et al. [1] found that the use of plaster to connect separate discs ...
    ... decrease gradient to about 38% of weaker rock material, leading the values to be approximately equal to intact UCS of weaker rock material. On the other hand, in Z. Mohamed et al. [4] study, the ratio was σci hard UCS/σci weak UCS = 4.4 and strength decrease has a steeper gradient to about 10% of weaker ...

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • 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

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Ontološki model upravljanja rizikom u rudarstvu

    Olivera Kitanović (2021)
    Rudarska proizvodnja obuhvata kompleksne tehnološke sisteme, što nameće potrebu za uspostavljanjem i unapređivanjem sistema upravljanja rizikom. Heterogenost i obim podataka neophodnih za upravljanje rizikom zahtevaju sistem koji ih na fleksibilan način integriše i omogućava njihovo optimalno korišćenje. Osnovni cilj ove disertacije je razvoj ontologije za domen rudarstva i na njoj zasnovanog modela za upravljanje rizikom. Njegova realizacija podrazumeva i implementaciju algoritama ekstrakcije informacija za popunjavanje ontologije, kao i odgovarajuće softversko rešenje. Razvoj modela obuhvata i značajno proširenje rudarskog korpusa, kao ...
    rudarstvo, rizik, upravljanje rizikom, procena rizika, ontologija, semantička mreža, ekstrakcija informacija, upravljanje znanjem, računarska lingvistika
    ... (termoelektrana Nikola Tesla) ili TEK (termoelektrana Kostolac). Uz obeležja preduzeća, elektrane i naziva, mogu su u entitetu naći i približnije oznake termoelektrana, gde postoje ogranci. Prepoznati nazivi podgrafa su: - TE Nikola Tesla - TE ''Nikola Tesla B'' - TE-KO, Kostolac - PD TE-KO ''Kostolac'' ...
    ... korisnika istovremeno i nešto poboljšan interfejs za unos instanci, ali je to opšti alat te na žalost ni on nema udoban korisnički interfejs za upravljanje podacima. Bilo bi značajno nastaviti izgradnju prezentovanog pilot rešenja te napraviti adekvatno softversko rešenje čime bi se obezbedila dopuna ontologije ...
    ... Rector, Robert Stevens, and Chris Wroe. 2004. “A Practical Guide to Building OWL Ontologies Using the Protégé-OWL Plugin and CO-ODE Tools Edition 1.0.” University of Manchester. Ignjatović, Dragan, Dinko Knežević, Božo Kolonja, Nikola Lilić, and Ranka Stanković. 2007. Upravljanje Kvalitetom Uglja. ...

  • Open Educational Resources in Serbia

    Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević (2020)
    Open educational resources, BAEKTEL, Metadata portal
    ... Information, University Computer Center), University of Niš (Faculty of Natural Sciences and Mathematics, Teacher's College, University Library "Nikola Tesla"), University of Kragujevac (University Library, Faculty of Philology and Arts), Archaeological Institute Belgrade, National Library of Serbia ...
    ... have to be registered and described in the central metadata repository. The aim of the BAEKTEL Metadata Portal is to provide structured access to information on open education resources within the BAEKTEL network. To OER creators, the Portal provides OER metadata management, and to learners ...
    ... educational resources have an exceptional potential to contribute to the improvement of the quality and effectiveness of education. Apart from responding to the demand for access to ICT infrastructure, educational institutions are also required to improve the teaching and learning environment ( ...

  • Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања

    Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић (2023)
    геохемија, угаљ, продукти сагоревања, XRF, ICP-MS

  • XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit

    Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić (2024)
    Čukaru Peki, epithermal mineralization, hydrothermal alterations