Претрага

Упит dcterms_subject_txt:могућност коришћења УПГ-а у Србији

4193 items

  • Допринос одређивању безопасног растојања при извођењу минирања

    Slobodan Trajković, Sanja Bajić, Ivan Krsmanović (2023)
    минирање, експлозија, потреси од минирања
    ... XHJIpOKCHJIHMa TBO:>I}a. #+ „HuHcehepckO - 20O0J0LMKe Kapakmepucmuke jecuuwama — OBe CreHc npHnajajy IpyrnM Be3aHHMX CTCHa, KOJC Cy HHTC3HBHO HcIyIaHc H KapcrTHQ)MMKOBaHe. HcenarTHBaMbeM je yTBPpleHOo a Cy yCJIOBH 30 paji, Kao H BHIHCTOJHIHH4 CKcIIJOATALIHJA jc moKa3aa a Cy HH)KEHbCDpCKO- ...
    ... 3anrTHTe OKOJIHHX rpabeBHHcKHX O0jeKaTa KOJI yrBpbHBaba OesomacHor · pacrojaba · H MaKCHMaJIHEC KOJIHUHHC CKCIIIO3HBa KOJa CČ MOXKC aKTHBHpaTH a a HeMa OmrrehePa Ha rpabeBHHCKHM O0jeKTHMa. KijbyuHe peuM: MHHHpabć, CKCIJIO3HJA, TIOTpecH 0JI MHHHPpahba. 1. YBOJI Koji B3Boljeba MHHHPpaMb5a ...
    ... , THM IIpe mro y CpOujH jomi yBEK He mMNOCTOJE 173 ABSTRACT This paper elaborates the problems connected with establishment of a safety distance paying a particular attention to unfavorable effects occurring during blasting. One of these unfavorable effects refers to seismic activity caused ...

  • Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”

    Vladimir Čebašek, Veljko Rupar (2018)
    Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".
    stabilnost kosina, povećanje nagiba kosina, metoda konačnih elemenata

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... Python list-objects containing tuples as elements. An example of such tuple is the following: “ Hadži-Đera je za to vreme ušao u sobu agama , da im nazove dobro jutro, a manastir- 9BRAT, https://brat.nlplab.org 10INCEpTION annotation tool, https://inception-project.github.io/ 11Among other CoNLL ...
    ... developed a POS-tagger and a NER for Greek using spaCy, based on newspaper articles and Wikipedia dataset, able to recognize the following entity types: location, organization, person and fa- cility. Jabbari et al. (2020) created a corpus consisting of news articles in French, which ser- ved as a dataset ...
    ... 1) an entity is recognized, but not with the correct type (e.g. PERS mistaken for a ROLE); 2) an entity is recognized as a correct type but the scope is not correct (e.g only a first name is recognized as PERS, although a full name is given); or 3) model annotated something that is not present in the gold ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • Одређивање оптималних параметара цевовода за двофазни проток

    Николина Ћурчић (2024)
    Eфикасно управљање протоком флуида је кључно за оптимизацију перформанси система и обезбеђивање оперативне сигурности. Двофазни ток, који подразумева истовремено присуство течне и гасне фазе унутар цевовода и измењивача топлоте, представља један од најсложенијих аспеката динамике флуида. Овај феномен намеће јединствене изазове који захтевају дубоко разумевање и прецизно планирање. Ефикасно управљање двофазним током није само кључно за одржавање ефикасности система, већ је и неопходно за спречавање потенцијалних проблема као што су повећана ерозија, неочекиване флуктуације притиска и ризици по безбедност. У ...
    евовод, оптимизација, двофазни проток, параметри цевовода, трошкови
    ... yrnpaBo ripHKay3yje camKa 5.1. r–——·ipuwkobu duMuaM g Hipoukobu uečboboga \Lu a dpeuMuk ueboboga [| ] [g uu ]} cu op ii a t o g u u W u Ud ip ou ko bu di pq Hi Canuka 5.1. Kpematbe mpouukosa uegaogooda u nyunnHux cmaHuua (IIpcmojesuh, 2012) 24 EKOHOMCKH je HcriaTHBHje HHCTaJIHpaTH ...
    ... • Haru0 u reoMeTpuja HeBOBOJIA: VKOJIHKO HIČBOBOJI HMa IIDOMCHJbHB HaTrH0 HJIH 3aKPpHBJbeFba, TO MO;Ke 3HauajHO noBeharn raji rpHaTHcka. Merone 3a ojipeljuBame onTuMa;jHor najia npuTHcKa: • Darcy-Weisbach u Hazen-Williams jeniauunHe: OBe Je)uHauiHe KOpHcTe ce 3a. npopauyH ma/a npHrTHcKa Ha ...
    ... HOCTaBJbaPba Ha(bToBojma H3Meljy JiBe TauKe, periiMo A u 5, ocBeTJbaBa IIpo0JIeM ripoHamaxKePba HajonmrTHMajnHuje ryrTame. Ha cram 4.1. ce MO)Ke BHJIeTH KaprTa Koja rpa(buuku rpukayyJe 30op Tpace racoBojna. Ha kapTH ce MO:;KC M3Meby Tauaka A H B HauprarH Mpexa ca OMHO KOJOM CTpyKTypOM. UBOpoBH ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Флотабилност халкопирита из полиметаличне руде рудника „Рудник”

    Ђурица Н. Никшић (2022)
    The doctoral dissertation Chalcopyrite flotability from polymetallic "Rudnik" mine ore consists of two parts. The first part is a general part in which the theoretical foundations of the flotation concentration process, the flotation properties of chalcopyrite, the influence of certain flotation reagents and the mechanism of action on the flotation properties of chalcopyrite are presented. This part also describes the process of flotation concentration of polymetallic ore from the "Rudnik" mine. The second part is ...
    Халкопирит, флотацијска концентрација, KAX, NaCN, pH пулпе

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... word senses, drawn from other lexicographic resources. The task provided prospective systems with a set of word senses that were not in PWN, where each word sense comprised a lemma, a part of speech, and a defi- nition. The systems were to identify the most plausible point for placing each of the word ...
    ... exception of a little over 1,000 Serbian specific synsets that do not exist in PWN. In our research we used 20,221 aligned synsets (from a previous version of SerWN), coupled with a number of bilingual resources, to speed up the development of SerWN, by selecting and adjusting PWN synsets from a set of ...
    ... TermII]* where TermI represents a word in one language, and TermII a corresponding word in another. A few examples from the en-sr parallel list are: grandmother;baka,baba soft drink;bezalkoholno piće safe,secure;bezbedan,siguran From the en-sr parallel list we produced a simple list of translation pairs ...

  • Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty

    Miloš Gligorić, Jelena Majstorović, Suzana Lutovac (2018)
    ... Moore Distance. (Trindade et al., 2010). Firstly, we must define a degenerated interval which represent a reference value called zero interval. In relation to zero interval we compute distance to the current interval. That distance shows a range of closeness between zero interval and current interval ...
    ... 𝑚𝑒𝑎𝑛 ∙ 100 % (15) 5 RESULTS AND DISCUSSION Using arithmetic operation (3), obtained results are represented as a converted interval values into a crisp values for a both of approaches of the calculation the degree of anisotropy and also for anisotropy coefficient. Degree of anisotropy ...
    ... cover a less range of values than the anisotropy coefficients for anisotropic samples. It means that anisotropy coefficients for isotropic samples follow each other and values tends to keep a straight line. In contrast, anisotropy coefficients for anisotropic samples have no tend to be a straight ...

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... током  горње креде од доњег  турона,  а  завршила се  депоновањем  спрудних  седимената,  конгломерата  и  пешчара  у  горњем  кампану‐мастрихту.  То‐ ком овог периода вулканска активност произвела је различите калко‐алкалне вулканске и интру‐ зивне фације.  У овом раду представљени су палеомагнетс ...
    ...  Márton, E.2, Јовановић, Д.1, Луковић, А.3, Цветков, В.4    1) Републички геодестки завод, Одељење за геомагнетизам и аерономију, Београд, Србија, e‐mail: vlesić@drenik.net  2) Mining and Gelogical Survey of Hungary  3)Природњачки музеј, Београд, Србија  4) Универзитет у Београду, Рударско‐геолошки факултет ...
    ... ом узорку. Затим су "сестре" узорци (узорци из истог језгра) подвргнути  корак по корак демагнетизацији, један узорак демагнетизацији у наизменичном магнетном пољу  а  други  термалној  демагнетизацији  (уз  праћење магнетске  сусцептибилности)  док  се магнетски  сигнал  није  изгубио. Метода  дема ...

  • A new polymorph of Ba(AsO3OH): Synthesis, crystal structure and vibrational spectra

    Tamara Đorđević, Ljiljana Karanović (2010)
    A new monoclinic polymorph of Ba(AsO3OH) was synthesized under hydrothermal conditions. It represents a previously unknown structure type. Its crystal structure was determined from a racemic twin using single-crystal X-ray diffraction data collected at 120 and 293 K [space group P21, a=7.2149(14)/7.2370(2), b=7.7028(15)/7.7133(2), c=21.7385(43)/21.8079(5) Å, β=95.95(3)/96.073(1)1, V=1201.6(4)/1210.51(5) Å3, Z=12]. The crystal structure of P21-Ba(AsO3OH) has a layered character and is built up of four types of regularly alternating layers parallel to (0 0 1). Every AsO3OH tetrahedron is chelating to two Ba atoms and ...
    Ba(AsO3OH), хидротермална синтеза, структурна анализа монокристала, Раманска спектроскопија, инфрацрвена спектроскопија, водоничне везе, хидрогенарсенати земноалкалних метала

  • Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia

    Boban Pavlović, Uroš Pantelić, Marija Živković, Dejan Ivezić (2023)
    The aim of this paper is to provide a preliminary evaluation of the impact caused by NO2 emissions from a heating plant on the local air quality. To model the spatial distribution of NO2 emissions from the heating plant, the AERMOD model was employed. The evaluation was conducted by analyzing and contrasting the simulated NO2 concentration from the heating plant with the overall NO2 concentration recorded at the nearest monitoring station over the entire heating season. The study focused ...
    AERMOD, квалитет ваздуха, моделирање дисперзије загађења, топлана, NO2 загађење

  • Unusually sluggish microemulsion system with water, toluene and a technical branched alkyl polyethoxylate

    Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Snežana Zlatanović, Zoran Marković, Aleksandar Cvjetić (2015)
    Microemulsion systems with water, toluene and nonionic surfactants are interesting for application due to the excellent solvent properties of aromatic hydrocarbons. In this study, the pseudo-binary phase diagram (“fish-diagram”) of such a ternary system was investigated using a branched technical alkyl polyethoxylate. Lutensol ON 50 (i-C10E5) was considered a suitable surfactant. The system with technical branched i-C10E5 exhibits very long, and for compositions near optimum solubilization, i.e., the minimum content of surfactant needed for a bicontinuous microemulsion, extremely long ...
    микроемулзија, толуен, оксоалкохол етоксилат, термодинамичка стабилност, тернарни фазни дијаграми, дијаграми „fish“

  • The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia

    Branislav Petrović (2023)
    The epikarst as a part of the karst aquifer represents a complex point of contact and mixing of unconsolidated material from the terrain surface, carbonate rocks altered by “corrosive” water, flora and fauna (and remains of), which is partially saturated with groundwater. Significant amounts of (plant accessible) water, and other solutes and particles, can be stored in this zone for extended periods of time. Thus, attenuation or biochemical processes could start in this layer and change quality of infiltrated ...
    epikarst, tracer test, shallow cave, Suva Planina Mt., Serbia

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... a uglja. U radu su prikazana pucolanska svojstva, mehanička svojstva, kemijski i mineralni sastav i svojstva elektrofilterskog pepela dobivenog u procesu sagorijevanja u termoelektrani Nikola Tesla A (TENT A) s dodatkom veziva hidratiziranog vapna i cementa. Cilj istraživanja je mogućnost uporabe ...
    ... Tesla A (PPNT A) in Obrenovac. This paper presents the pozzolanic, mechanical, chemical and mineral composition and properties of fly ash obtained in the combustion process in a PPNT A with the addition of a binder hydrated lime and cement. Tests were performed after 7 and 28 days in a humid ...
    ... mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a binder hydrated lime and cement. The aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... models are progressing nowadays and giving a wide range of possibilities. Some of the available approaches treat the heterogeneous and multiphase moving mass as a single-phase continuum. The others are considering two phases, solid and liquid, i.e. a granular skeleton with voids filled with either ...
    ... into a ‘pore pressure’ and an effective stress, and the mechanical behavior of the mixture can be described by a system of differential equations governing the dynamics of each of the phases as well as the coupling among them (Pastor et al, 2008). SPH (Smoothed Particle Hydrodynamics) is a mesh- ...
    ... transportation zone The Selanac debris flow is a complex flow type landslide phenomenon, firstly triggered as slide of huge initial block which is 30 m thick in the deepest part. Subsequently, it propagated as a debris flow process, with a long runout distance, including about 1 km long transportation ...

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... Service, basically composed of a web application and a web service. When handling a query, the Language Web Service uses a component of the multipurpose tool LeXimir, namely the function library LeXimir_Core. A query originating from the LMS is accepted by the web application ...
    ... 795 The TEL platform will also serve as a model for developing similar platforms as nodes within a TEL network encompassing a larger number of universities and enterprises. The network will feature a common portal for indexing and facilitating access to the various OER ...
    ... need for multilinguality of OER is a combined effect of globalization and European integration, favoring a holistic approach that takes into account all the languages a learner may use, as opposed to the more traditional approach looking at one language at a time (Cenoz & Gorter, 2011). Hence, ...

  • Tracking of the temporal dependency of fading of the human footprint temperature contrast

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović (2021)
    In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...