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Упит dcterms_subject_txt:TE Nikola Tesla""

286 items

  • 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

  • Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"

    Nikola Mirković, Luka Crnogorac, Aleksa Paunović (2024)

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... Ventilation Systems Analysis Ranka Stanković, Nikola Lilić, Ivan Obradović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] VENTEX: An Expert System for Mine Ventilation Systems Analysis | Ranka Stanković, Nikola Lilić, Ivan Obradović | YU Info '96 Brezovica ...
    ... its name, attributes and methods pertaining to the procedures related to the object. In order to incorporate declarative knowledge, this model was modified by including a new (fourth) element, featuring the production (IF-THEN) rules related to an object in the model /Fig. 1/. Thus both the ...
    ... complicated due to the fact that two sources of information exist: the SimVent numerical routines and the user. The hierarchical decomposition of the main goal into subgoals, representing the problem-solving strategy, makes it easier to cope with the complexities and to coordinate the use ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... ac.rs NIKOLA VULOVIĆ University of Belgrade, Faculty of Mining and Geology, nikola.vulovic@rgf.bg.ac.rs MILADIN KOTORČEVIĆ University of Belgrade, Faculty of Mining and Geology, miladin.kotorcevic@rgf.bg.ac.rs Abstract: E-learning courses are becoming progressively popular. Thanks to the Internet ...
    ... Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Towards translation of educational resources using GIZA++ | Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević ...
    ... consists of
    , ,

    (paragraph), <tu> (Translation Unit) and (Translation unit variant) elements. [15] Metadata code (element ) is attached to each aligned sentence (element <tu>) in order to establish a direct relation to metadata and the original (pdf, edX, docx,…) form ...

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Keyword-Based Search on Bilingual Digital Libraries

    Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović (2017)
    This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... se jedan vektor na sledeći način: svaki prolaz i-te trajektorije kroz k-to polje generiše jedinični vektor ei, čiji je pravac i smer određen pravcem i smerom trajektorije sistema unutar posmatranog polja. Konačna aproksimacija vektora Vk u k-tom polju faznog prostora predstavlja, u suštini, srednju ...
    ... konstruisan u cilju ispitivanja raspodele potencijalne energije u posmatranom sistemu, i poređenja te distribucije sa Gutenberg-Rihter3 i Omori-Utsu zakonom4 koji važe za tektonske zemljotrese. U tom smislu, razmatrana su dva slučaja: a) kada su blokovi povezani oprugama istih karakteristika; b) ...
    ... empirijski parametri.     39   Ukoliko usvojimo da je xi,m položaj i-tog bloka nakon kretanja čitavog sistema (tzv.,, lavine’’), a li dužina opruge u nezategnutom stanju, onda je potencijalna energija sistema odmah nakon m-te lavine data sledećim izrazom: , , n, ( ) ( l ) ...

  • 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 ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... kitanovic@rgf.bg.ac.rs NIKOLA VULOVIĆ University of Belgrade, Faculty of Mining and Geology, nikola.vulovic@rgf.bg.ac.rs BOJAN ZLATIĆ University of Belgrade, Faculty of Mining and Geology, bojan.zlatic@rgf.bg.ac.rs Abstract: This paper outlines the approach to tagging of OER content with ...
    ... Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] LRMI markup of OER content within the BAEKTEL project | Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić | The Sixth ...
    ... lots of irrelevant results due to the huge amount of materials available. Through the use of metadata the Learning Resource Metadata Initiative (LRMI) offers ways to help pinpoint the right learning resources to address user needs. Applying metadata tags to educational materials makes them ...

  • New paleoecological perspectives on Late Pleistocene Neanderthals in northern Balkans: the rodent assemblages from Smolućka cave (Serbia)

    Mihailo Jovanović, Katarina Bogićević, Draženko Nenadić, Jordi Agustí,·Christian Sánchez Bandera, Juan Manuel López García, Hugues Alexandre Blain (2022)
    During the Late Pleistocene, the Balkans came to be an important region with many isolated areas, enabling fauna, alongside Neanderthals, to thrive in the area. This work is focused on paleoenvironmental and paleoclimatic changes that occurred in the northern Balkan Peninsula with a special focus on fossil record from Smolućka cave aging from MIS 5 to MIS 3. Based on available data, an attempt has been made to establish a synthetic chronological context for the faunal assemblages recovered from ...
    MIS 5 to MIS 3, sitni sisari, klima, predeo, srednji paleolit, Balkansko poluostrvo

  • Smanjenje sleganja plitkih temelja primenom mikrošipova

    Slobodan Ćorić, Dragoslav Rakić (2021)
    Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...
    mikrošipovi, sleganje plitkih temelja i mikrošipova, krutost tla i mikrošipova

  • 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

  • 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
    ... Stanković, Nikola Vulović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] 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 ...
    ... exist and best way to solve them is to use different methods. The motivation for creating hybrid systems can be to improve methods, to solve problems complexity with multiple tasks and resolve multifunctionality. Improving the method can be achieved by integrating different methods to overcome specific ...
    ... thematic, directed to the addressee (or addressees) and relevant to the relationship between them. Suicide notes generally have sentences alluding to the act of killing oneself, or the method of suicide that was undertaken. 6 The contents of a suicide note could be intended to make the addressee ...

  • Палеонтологија и геофизика - од коегзистенције до успешне сарадње

    Vasiljević Ivana (2018)

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • 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 ...