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Упит dcterms_subject_txt:симулациони модели

798 items

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... dictionary (s_koncept) which can be related to the main table on basis of different fields, depending on the dimension we want to follow. The BI model for mine safety integrates standard OLAP techniques based on RudOnto, where dimensions of OLAP cubes are concepts of the RudOnto ontology, and the ...
    ... this slot different dimensions that will be used for calculating the number of injuries can be defined in a quick and simple manner The BI model can offer important information for safety management but also allows different ways of presenting data. Figure 3 depicts three ways of presenting ...

  • 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
    ... changing the face of distant learning and education altogether by erasing geographical and spatial constraints, leaving the traditional education model behind [2]. Interactive forums and teaching assistants rely greatly on various NLP tools to help them cater to a large number of students from all ...
    ... resulting in insufficient interaction and feedback. These tools help overcome these hurdles at an advantage for both students and educators. The model of digital education also allows for a modern peer-to-peer education where students educate themselves and each other, exploring, developing and ...

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... 2 cm. Seven flights were performed in order to cover the entire landslide area (Fig. 3). “Zero” high resolution orthophoto and Digital Elevation Model (DEM) were principal SfM products from each sequence, as the same procedure was repeated in March 2019 and both obtained DEMs were analyzed and compared ...
    ... continued monitoring and analysing: (1) spatial patterns and relationships between landslide and element at risk, (2) proposing quantitative risk model and (3) landslide risk management, according to the Project goals. Those research objectives will be also part of IPL248 joint Project research between ...
    ... Landslide Forum, vol 1, pp 75–80. Springer International Publisher Abolmasov B, Milenković S, Marjanović M, Đurić U, Jelisavac B (2015) A geotechnical model of the Umka landslide with reference to landslides in weathered Neogene marls in Serbia. Landslides 12 (4):689–702 Fig. 8 Results of cumulative ...

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... factor 1%, squares are space group absences). (d) Arsenopyrite crystal structure in the same orientation left to right: ball-stick model, coordination tetrahedra model, Fe-tetrahedra, and As- and S-tetrahedra models. The red square indicates the unit cell (u.c.). For clarification, we analysed the ...
    ... observed on the experimental Kikuchi lines image (Figure 4b,c), the whole pattern symmetry is m (Figure 4a,b), and the arsenopyrite crystal structure model derived from the TEM analysis closely resembles the marcasite prototype structure (Figure 4d). We interpret the occurrence of the forbidden hk0 ...

  • Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije

    Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović (2024)
    Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...
    obrazovanje, rudarstvo, geologija
    ... pripremi mineralnih sirovina (3 godine); Rukovalac postrojenjima za dobijanje nafte i gasa (3 godine). Obrazovni profili prilagođeni za realizaciju po modelu dualnog obrazovanja [7]: 1. Rukovalac mašinama i uređajima za eksploataciju nafte i gasa (3 godine). M O . ı BR O O — U okviru srednjeg ...
    ... o tehničkim školama koje obrazuju učenike prema specifičnim stručnim obrazovnim profilima, pored redovnog pohađanja nastavc zastupljen je vanredni model pohađanja ovih obrazovnih profila. Rukovalac mehanizacijom u površinskoj eksploataciji je aktivan u tri prethodno pomcenute škole. Pomenute škole ...
    ... potrebe za zaštitom životne sredine, primena metoda koje minimalizuju ekološki uticaj na životnu sredinu. Razumevanje procesa i mera dekarbonizacije i modela cirkularne ekonomije (primene sekundarnih sirovina); • Jnovatiyvnost - sposobnost šireg shvatanja prostora i mogućnosti za usavršavanje rudarskih ...

  • Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes

    Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)
    Earth-Surface Processes

  • Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)
    General Earth and Planetary Sciences

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali

    Jovan Obradović (2024)
    Cilj ovog Završnog rada na temu „Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali” jeste dobijanje koordinata tačaka jamskog poligonskog vlaka, kao i prikaz samog rudnika na osnovu detaljnog snimanja jame, kao poprečnih profila podzemne rudničke prostorije. U datom radu biće predstavljene metode koje su primenjene prilikom snimanja, kao i rezultati samih merenja i sva potrebna računanja da bi se došlo do potrebnih koordinata.Merenja za završni rad obavljena su tokom terenske nastave održane u junu 2024. godine ...
    Rudarska merenja, povezivanje, plan jame, poprečni profil
    ... Ove tačke se nazivaju oblak tačaka i na jednom skenu, u oblaku može da bude i nekoliko miliona tačaka. Vidno polje skenera zavisi od modela, a kod pojedinih modela ono iznosi 360?* u horizontalnoj i 270% u vertikalnoj ravni. SLIKA 4-8 - LEICA CI0 SKENER; 37 Iz vidnog polja skenera, softverski ...
    ... snimaka o obliku i izgledu objekata iz realnog sveta. Ovako prikupljeni podaci koriste se za izradu digitalnih 2D planova, karata, profila ili 3D modela skeniranih objekata. Digitalni snimci objekta — skenovi, dobijeni 3D laserskim skeniranjem sastoje se od veoma velikog broja tačaka koje imaju ...
    ... tačaka. Današnji skeneri omogućavaju prikupljanje veoma gustog oblaka tačaka sa međusobnim rastojanjem manjim od 1 mm. Brzina skeniranja zavisi od modela skenera i kreće se i do 500.000 tačaka u sekundi. SLIKA 4-9 - OBL4K TAČAKA SKENIRANOG TUNELA; Lasersko 3D skeniranje predstavlja izuzetno brz i ...

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... map but rather a database, from which many types of geologic and engineering geology maps can be derived. This requires a database design or data model that is sufficiently robust to manage complex geologic concepts such as three dimensional (spatial) and temporal relations among map units, faults ...
    ... different types of geometrical objects, for their representation. There are advantages and disadvantages to using both the raster and the vector data model to represent reality. Raster data sets record a value for each point in the area of interest, which may require more storage space than the rep ...

  • Bezbednosna rastojanja u jamskim magacinima eksploziva u domaćoj i međunarodnoj praksi

    Luka Crnogorac, Ognjen Popović, Toma Jovičić, Veljko Lapčević (2024)
    Projektovanje jamskih magacina eksploziva predstavlja složen inženjerski problem. Sama namena jamskih magacina zahteva ispunjenost niza uslova koji se odnose na bezbedno pozicioniranje magacina, ispunjenost uslova ventilacije, pristupa, rukovođenja magacinom, načina skladištenja eksplozivnih sredstava, protivpožarne zaštite, elektro zaštite itd. Veoma važan parametar prilikom projektovanja jamskih magacina eksplozivnih sredstava predstavlja minimalno sigurnosno rastojanje između susednih komora u kojima su smeštena eksplozivna sredstva u cilju sprečavanja potencijalnog neželjenog dejstva vazdušnog udarnog talasa, razornog dejstva eksplozije i seizmičkog dejstva eksplozije. U ovom radu su prikazani ...
    jamski magacini, eksplozivi, bezbednosna rastojanja
    ... Univerzitet u Beogradu, Rudarsko-geološki fakultet, Beograd, ISBN 86-7352-114-9 [2] United Nations (2023) UN Model Regulations: UN Recommedations on the Transport of Dangerous Goods - Model Regulations Twenty-third revised version, United Nations Publications, New York and Geneva, e-ISBN 2412-0820 ...

  • Минерагенија зеолитских туфова Србије

    Vladan Kašić (2018-02-05)
    Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...
    минерагенија, зеолитски туф, Србија, клиноптилолит, хојландит
    ... 4.3. Прелиминарни генетски модел лежишта зеолитских туфова у терцијарним басенима Србије На основну претходних разматрања, може се успоставити прелиминарни модел образовања лежишта зеолита у терцијарним басенима Србије, кроз обраду свих елемената генетског модела (према Јанковићу, 1981), и то: ...
    ... зеолитских туфова Србије; – извршена детаљна технолошка карактеризација наших зеолитских туфова (XRD, DTA/TGA, SEM); – дефинисан генетски модел образовања зеолитских туфова и утврђенe законитости размештаја лежишта и појава зеолитских туфова Србије и – наведене могућности примене различитих ...
    ... zeolitic tuff deposits; – Obtained detail technological characterization of Serbian zeolitic tuff deposits (XRD, DTA/TGA, SEM); – Defined genetic model of formation of zeolitic tuffs and determined disposition of Serbian zeolitic tuff deposits and occurences; – Specified application possibilities ...

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... дати језик, што захтева много рада врхунских стручњака да и се оне уградиле у соф- твер, или се могу користити такозвани статистички језички модели. Такви модели се заснивају на из- рачунавању вероватноће да се одређена реч појави у специфичном окружењу (нпр., испред или иза одре- ђених речи). На пример ...
    ... могућих корисни- кових исказа на ограничен скуп кључних речи или да се ручно изграде језички модели који покривају широки опсег корисникових исказа на природном језику. Коришћењем техника машинског учења, је- зички модели могу да се изграђују аутоматски из го- ворних корпуса, тј. великих колекција говорних ...
    ... корисници невољно прихватају. С друге стране, креирање, подешавање и одржавање огатих језич- ких модела може значајно да увећа трошкове. Па ипак, гласовне корисничке сумеђе које користе је- зичке моделе на почетку дозвољавају кориснику да слоодно изразе своје намере – подстичући га, на пример, питањем ...

  • Elektromagnetska sprega sistema litosfera-atmosfera-jonosfera

    Aleksandra B. Kolarski (2016-08-25)
    Radio talasi vrlo niskih frekvencija VLF (eng. Very Low Frequency) frekventnog opsega od 3 do 30 kHz, koji se prostiru talasovodom Zemlja-jonosfera (50 -90 km) su, kao što je poznato, efikasni i nezamenljivi u osmatranju pojava u niskoj jonosferi, sa tla...
    prostiranje talasa vrlo niskih frekvencija, talasovod Zemlja-jonosfera, globalno električno kolo, atmosfersko električno pražnjenje, kratkotrajne svetlosne pojave
    ... Zemlja-jonosfera, a koje nastaju kao posledica atmosferskog pražnjenja korišćen je model niske jonosfere u noćnim uslovima, koji je sastavni deo modela propagacije dugih talasa LWPM (Long Wave Propagation Model), koji sadrži ulazne podatke za programski paket LWPC. Postupak korišćenja ovog programa ...
    ... simulirane su promene vrednosti amplitude i faze signala u uslovima izmenjene koncentracije elektrona. Programski paket LWPC polazi od modela niske jonosfere i modela prostiranja VLF talasa na određenim GCP od predajnika do prijemnika. Osnovni parametri sredine propagacije, oštrina gornje granice ...
    ... vrednost 7107 m-3, dok je disipirana energija procenjena na 6 GJ. Dobijeni rezultati su u saglasnosti sa rezultatima proračuna na osnovu drugih modela niske jonosfere, kao i sa rezultatima merenja primenom različitih tehnika, sa tla i “in situ”. Ključne reči: Prostiranje talasa vrlo niskih ...

  • A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment

    Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)
    Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...
    lexical semantic resources, sense alignment, lexicography, language resource
    ... they are considered to agree that the link be- tween this is none. Table 4 presents the IAA in a 5-class model, that is the five semantic relationships. Moreover, we provide a 2-class model where all types of semantic re- lationships, namely exact, broader, narrower and related, are merged and compared ...
    ... contemporânea. Lisboa: Academia das Ciências de Lis- boa e Editorial Verbo, 2. Cimiano, P., McCrae, J. P., and Buitelaar, P. (2016). Lexi- con Model for Ontologies: Community Report. Dahlerup, V. (1918). Ordbog over det danske sprog, vol- ume 1. Gyldendal. Dandala, B., Mihalcea, R., and Bunescu ...
    ... wordnet (bultreebank bulgarian wordnet). In John P. McCrae, et al., editors, Proceed- ings of the LDK 2017 Workshops: 1st Workshop on the OntoLex Model (OntoLex-2017), Shared Task on Trans- lation Inference Across Dictionaries & Challenges for Wordnets co-located with 1st Conference on Language, ...

  • 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
    ... (Stanković et al., 2018). 3.2 Semantic networks The Serbian wordnet (SWN) has been developed in the scope of the Balkanet project following the model adopted for the EuroWordnet project (Krstev et al., 2004). More than 22,000 synsets built by app. 28,000 literals are Princeton WordNet (PWN), except ...
    ... No. 2, December 2019 107 Stanković R. and Utvić M., “Vebran Web Service . . . ”, pp. 99–118 MVC.Net web application framework which uses the model–view–controller pattern. Clients are open source software (OCWB/CQPweb and NoSketch Engine / Bonito have been implemented in PHP and Python respectively) ...
    ... Proceedings of the Eighth International Confer- ence on Language Resources and Evaluation (LREC),(Istanbul, Turkey, 2012, 1710–1717 Stanković, Ranka. “Modeli ekspanzije upita nad tekstuelnim resursima”. Phdthesis, Univerzitet u Beogradu, Matematički fakultet, Beograd, 2009 Stanković, Ranka, Cvetana Krstev ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... years, as well as that the number of light injuries was much greater than the number of severe ones. 3.3. BI development environment The BI model for mine safety integrates standard OLAP techniques based on RudOnto, where dimensions of OLAP cubes are concepts of RudOnto ontology, and its hierarchy ...
    ... number of injuries can be defined in a quick and simple manner. 13th ISCSM 2016 BELGRADE 6 (a) (b) Figure 3. OLAP cubes The BI model can offer important information for safety management but also allows different ways of presenting data. Figure 4 depicts two ways of presenting data ...

  • Crystal structure of K3EuSi2O7

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu
    ... it is isostructural with K3ErSi2O7,15 atomic coordinates of this structural analogue were used as a starting model for structure refinement. When Er3+ was replaced with Eu3+ the model converged rapidly, and the crystal structure was refined to R = 3.5 %. The structure was refined on F2 by full-matrix ...

  • Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka

    Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov (2020)
    ... e a s t E u ro p e Magnetometrijska je istraživa- nja obavljeno protonskim magnetome- trom-gradiometrom sa Overhauzerovim efektom (GEM System model GSM- 19GW) u “hodajućem”modu. S obzirom na to da je ispitivani prostor oranica, sa veoma mladom po- ljoprivrednom kulturom, donja sonda je p ...

  • 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
    ... example sentences, collocations) as complementary resources in electronic dictionaries is known as the one-click dictionary or push-pull dictionary model, which is used, for example, in the Sketch-engine [9] for several languages, but has not yet been used for Serbian. A similar approach to the one outlined ...
    ... export of lexical database data in RDF that is compliant with the The OntoLex Lemon Lexicography Module [47], lexicog [48], as an extension of Lexicon Model for Ontologies (lemon) [49,50]. This is also in line with activities within NexusLinguarum COST action [51], which promotes synergies across Europe ...
    ... area of linguistic data science. An example of RDF export is presented in Figure 4 followed by the Turtle RDF Syntax [52] to illustrate the use of the model. Appl. Sci. 2021, 11, 2892 13 of 22 Figure 4. The graph for the translation of lexical entries: ‘fossil fuel’-‘fosilno gorivo’). :fossil_fuel a ...