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Упит dcterms_subject_txt:TE Nikola Tesla""

286 items

  • 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 ...

  • 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

  • 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

  • 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

  • Advancing Sentiment Analysis in Serbian Literature: A Zero and Few-Shot Learning Approach Using the Mistral Model

    Milica Ikonić Nešić, Saša Petalinkar, Mihailo Škorić, Ranka Stanković, Biljana Rujević (2024)
    Ova studija predstavlja analizu sentimenta srpskih starih romana iz perioda 1840-1920, koristeći veliki jezički model (LLM) Mistral za tehniku učenja sa zasnovani na takozvanim "zero" i "few-shot" pokušajima. Glavni pristup uvodi inovacije osmišljavanjem istraživačkih upita (promptova) uključuju tekst sa uputstvom za klasifikaciju bez primera i na osnovu nekoliko primera, omogućavajući jezičkom modelu da klasifikuje osećanja u pozitivne, negativne ili objektivne kategorije. Ova metodologija ima za cilj da pojednostavi analizu osećanja ograničavanjem odgovora, čime se povećava preciznost ...
    zero-shot, few-shot, sentiment, Serbian, Mistral model

  • 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

  • Транспортни систем за руду на површинском копу Бувач

    Никола Аџић (2024)
    У општем делу овог рада ће бити наведени утоварно-транспортни системи, њихова подела и основни елементи. У оквиру тога ће бити детаљније објашњени сви појединачни делови ових система као што су багери, камиони, дробилице и транспортери са траком. Даље ће бити наведени програмски пакети који се користе за прорачун ових система Talpac који се користи за прорачун дисконтинуалног транспорта и Helix који се користи за прорачун транспортера са траком. У специјалном делу су наведени параметри које мора да испуни пројектовани ...
    транспортни систем, камион, багер, транспортер са траком, дробилица
    ... pa Je 1010 m iH nocTaBJbeH je HOJI HarHOOM 0JI OKO 3.7* (rpaHcnopr py/te oxliı Kore 90 Ha KOJOJ ce Hana3uH npoOumuia JO KoTe 156 rane ce Hana3H yToBap Ha rpancnoprep TI). Marepujan ce MaJbe CralmMOHapHMM TpaHcmMŽoprepoM TI myxuHc 1660 m TpaHcnopryje o TocTpojeba 3a GMS. OpBaj TpaHcnopTep ce HaJta3H ...
    ... 1 Ligenced to University of Belgrade Technologies Ta6ena 7.2.1.6. Iapaempu mpancnopmepa T2 25 Sep 2024 1 Conveyor Idler Details Report Rudarsko-geoloski fakultet Project Zavrsni rad Project No. Conveyor No. T2 Client Prepared By Design Date Page 1/1 Katedra Nikola 17 September ...
    ... 1 Licenced to University of Belgrade < ncnmg\es 89 Ta6ena 7.2.1.7. IIpopauyn nanpesata s3a mpancnopmep T2 25 Sep 2024 11:13 Project Zavrsni rad Project No. Conveyor No. T2 Takeup & Drive Traction Calculation Rudarsko-geoloski fakultet Client Katedra PreparedBy · Nikola Design Date ...

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... Измењено: 2024-11-20 08:23:39 Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP Boban Pavlović, Nikola Trtica Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Projecting short to medium-term effects of carbon emissions trading ...
    ... Council, 2021). In order to examine the short to medium-term effects of introducing the ETS on projected economic growth (up to 2030) prior to its in, an approach has been developed based on the analysis of the expenditure approach to GDP. The primary objectives aimed to be achieved through this ...
    ... increase in RES capacity, due to the higher electricity production levels projected (Fig.. 4), the electricity sector is expected to continue having the highest contribution to GHG emissions, projected to be about 35,000 thousand tons (kt) COpeq in 2030 (Fig. 5). According to projections, the share ...

  • Preparation of Multimedia Document “YU Rock Scene”

    Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić (2017)
    SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...
    multimedia document, library science, information science, rock and roll, music, Yugoslavia
    ... breakthrough of performers and presentation of their hits to as many people as possible. Persons who have greatly contributed to radio shows related to the YU rock scene include Zoran Modli, Nikola Karaklajić, Nikola Nešković, Vlada Džet, Nikola Kanjevac and many others. Radio Belgrade broadcasted popular ...
    ... was difficult at the time to purchase good musical instruments at affordable prices. Still, there were tendencies for rock music as a musical genre to take roots in the territory of Montenegro, especially in Podgorica. Some movies deal with these issues, such as Momir Matović’s To ludo srce, and rock ...
    ... Soon, festivals devoted to rock music began to be organized, as well as gigs in increasing number of discotheques across Yugoslavia. First record labels began to be estab- lished, and the rock music was followed by numerous controversial phenomena. In this study, we have decided to list the most significant ...

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Tektonske i litostratigrafske karakteristike šireg područja Grivske (Zapadna Srbija)

    Nikola Otašević (2024)
    U ovom radu predstavljene su osnovne geološke karakteristike šireg područja Grivske. U litostratigrafskom pogledu na ovom prostoru prisutne su paleozojske, mezozojske i kenozojske sedimentne, magmatske i metamorfne stene. Tvorevine karbona su predstavljene semimeta-morfisanim tvorevinama.Tvorevine trijaske starosti su predstavljene slojevitim i masivnim krečnjacima, dok su tvorevine jure predstavljeni produktima ofiolitskog melanža. Takođe, prisutne su i tvorevine senona koje su predstavljene masivnim krečnjacima. U neogenoj sukcesiji dominiraju klastiti miocena, dok su u kvartaru zastupljeni različiti tipovi fluvijalnih, deluvijalnih i deluvijalno-proluvijalnih tvorevina. ...
    Arilje, grivska formacija, Drina-Ivanjica, tektonska evolucija