Претрага
738 items
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina
Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...... ki model redosleda pojedinih vrsta tokom perioda zahlađivanja i otopljavanja. 48 III KONGRES GE0LOGR BOSNE I HERCEGOVMINE SR MEBUNRRODNIM UČEŠĆEM U pećinskim naslagama Srbije gornjopleistocenske starosti u herpetološkim asocijacijama preovlađuju vrste koje se prema Bohmeovom modelu Javljaju ...
... Bohme created a Central European model of the sequence of individual species during periods of cooling and warming. In the cave deposits of Serbia of Late Pleistocene age, the herpetological associations arc dominated by species that, according to Bohme's model, appear in the warmer stages of the ...
... šema na našim terenima ograničena, usled različitih klimatskih uslova i rasprostranjenja herpetofaune tokom pleistocena, pa je potrebna izrada modela koji će uzeti u obzir lokalne uslove na Balkanskom poluostrvu. Ostaci kvartarnih mekušaca, pored ostataka sitnih sisara i herpetofaune, imaju značajnu ...Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković. "Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023., Ilidža : Udruženje geologa Bosne i Hercegovine (2023)
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Могућност примене приручних апарата за одређивања отпорности земљишта на ерозионе процесе шумских екосистема
Никола Живановић, Вукашин Рончевић, Владимир Чебашек, Вељко Рупар, Стеван Ћорлука, Синиша Половина (2022)Деградирани шумски екосистеми не пружају довољну заштиту земљишта те су често велике површине захваћене ерозионим процесима. Важну улогу при оцени отпорности земљишта на ерозионе процесе има напон смицања. Истраживано подручје лоцирано је у југозападном делу Београда чије су површине под шумом изложене интензивним ерозионим процесима. Читава површина испресецана је јаругама и плитким клизиштима. Одабрано је 13 профила на јаругама на којима је извршено мерење отпорности земљишта приручним апаратима на три тачке дуж профила (лева обала, јаруга, десна обала) и ...Никола Живановић, Вукашин Рончевић, Владимир Чебашек, Вељко Рупар, Стеван Ћорлука, Синиша Половина. "Могућност примене приручних апарата за одређивања отпорности земљишта на ерозионе процесе шумских екосистема" in Инжењерски проблеми у меким стенама - Друга конференција регионалних геотехничких друштава, Специјализована конференција ISRM-a, Друштво за геотехника на Македонија (2022)
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Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji
Системи даљинског грејања постоје у 57 градова и општина у Србији и доминантно користе фосилна горива. У овим урбаним срединама су изграђени, или се планира градња система за пречишћавање отпадних вода. У раду је размотрена (са еколошког и енергетског аспекта) могућност додатног, енергетског коришћења топлоте пречишћене воде у СДГ, применом топлотних пумпи. На примеру Шапца је извршено поређење постојећег СДГ са системом који би применом топлотних пумпи искористио енергетски потенцијал система за пречишћавање отпадних вода. Добијени индикатори су послужили ...... горива, чак преко 99%, док остатак чини дрвна биомаса. Просечан степен корисности котлова износи око 83,5% 1. Податак о губицима у дистрибутивној мрежи система даљинског грејања није експлицитно приказан у билансу, јер су губици топлотне енергије при дистрибуцији приказани збирно са губицима топлотне ...
... 000 m2, при чему је површина која се греје у домаћинствима око 374.000 m2, док је површина у комерцијалним зградама око 99.000 m2 . Укупна дужина мреже система даљинског грејања је 22.917 m. Просечна потрошња природног гаса износи око 7 милиона m3 годишње [11]. 90 | Стручно научна конференција ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević . "Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji" in Stručno-naučna konferencija TOPS 2019, Poslovno udruženje toplana Srbije (2019)
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Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima
Nenad M. Marić (2016-09-26)Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...... stabilnost rastvorenog zagađujućeg "tela". Sa druge strane, osmatračka mreža nizvodno od zone izmenjenih geohemijskih uslova, sadrži i objekte za nepredviđene situacije (tzv. sigurnosne bunare). Šematski prikaz osmatračkih mreža u slučajevima zagađenja podzemnih voda LNAPL i DNAPL fazom dati su na ...
... Pregled literature 25 Slika 2.14. Šematski prikaz osmatračke mreže u slučaju zagađenja podzemnih voda LNAPL fazom - prikaz u planu (Wiedemeier et al., 2006) Slika 2.15. Šematski prikaz osmatračke mreže u slučaju zagađenja podzemnih voda LNAPL fazom - prikaz u profilu (Wiedemeier ...
... Pregled literature 26 Slika 2.16. Šematski prikaz osmatračke mreže u slučaju zagađenja podzemnih voda DNAPL fazom - prikaz u planu (Wiedemeier et al., 2006) Slika 2.17. Šematski prikaz osmatračke mreže u slučaju zagađenja podzemnih voda DNAPL fazom - prikaz u profilu (Wiedemeier ...Nenad M. Marić. "Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-26)
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Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data
Vesna Cvetkov, Ilija Vasiljević, Mirko Petković. "Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data" in 5. Hrvatski geološki kongres. Abstract Book 5th Croatian Geological Congress, Hrvatski geološki institut (2015)
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Building Terminological Resources in an e-Learning Environment
... UML (Unified Modeling Language) engineering model with a special structure has been developed, whose main features are depicted in Figure 2. Assuming basic familiarity with this language we will briefly comment this model. The class Rečnik in the model is the lexicographic superclass whose instances ...
... general concepts, form the basis of this model. Ontology processors use these ontologies to select the most suitable tutor for a student depending on the set of new concepts the student needs to learn. Domain expertise can be shared within this model, and it can also serve as a framework ...
... semantic relations between concepts are realized by the RelacijeTermina class. Translational equivalents of a term in one or more languages in the UML model are realized by the MultijezičkiLeks class. As for the source from which a concept or a term has been taken (together with their meaning), it is ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Building Terminological Resources in an e-Learning Environment" in Proceedings of the Third International Conference on e-Learning, eLearning-2012, September 2012, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2012)
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Simpson's rule application for experimental determining parameters of rock mass oscillation equation at limestone
By its form, the use of explosives has a destructive character. However, energy of chemical explosives is tamed and perfected in many effects, so that is developed a series of activities which work is unthinkable without the use of explosives. In mining industry, explosives are most commonly used for exploitation in hard rock mass. Thereby, large amounts of explosives can be used, especially for mass blasting. The application of large amounts of explosives gives auspicious techno – economic indicators ...working environment, seismic effects of blasting, oscillation velocity, rock mass oscillation equation, Simpson’s ruleSuzana Lutovac, Miloš Gligorić, Jelena Majstorović, Branko Gluščević, Luka Crnogorac. "Simpson's rule application for experimental determining parameters of rock mass oscillation equation at limestone" in 8th International Conference Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer
Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)... Systems On the Hungarian side ofthe modei domain a MODFLOW based model was built [8] to investigate the hydrodynamic regime of the shallow acluifers. The preliminary SUDEHSTM hydrodynamical modei was conceived and built as a muitilayer model with ten layers (five water-bearings and five semi-permeables ...
... were previously artesian are characterized today by a static groundwater table lower than 10 m below the surface. The conceptual hydrogeological model includes five main acluifer layers to a depth of some 2500m (Figure 4.9.2). The first two (Quaternary and Upper Pliocene), which are most prominent ...
... the basis of provided documentation as representative values for the whole layer. Owing to insufficient data of the groundwater regime this initial model covered only steady state flow conditions. The obtained results are useful for preliminary evaluation. They show insignificant regional depletion ...Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić. "Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer" in Transboundary Water Resources Management - A Multidisciplinary Approach, Weinheim, Germany : Wiley-VCH (2011): 143-149
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Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца
... neracionaina potrosnja u letnjem periodu. Proteklih godina izvedena su hidrogeoloska istrazivanja kojima su prikupljeni podaci za izradu hidrodinamiékog modela izvorista. Odredene su rezerve podzemnih voda na izvoristu, a simulacijama rada izvorista kvantifikovane su vrednosti koli€éina podzemnih voda za sluéaj ...
... Belgrade) and plan to connect smaller settlements to the main waterworks system have initiated hydrogeological research and creation of hydrodynamical model of the exisiting source ,,Vié bare“ located in Sava River alluvium. The source consists of 30 vertical drilled wells and the two collector wells (with ...
... which are the main recharge source, and nevertheless current losses in water distribution system (over 40%). Simulations made on created hydrodynamical model confirmed that no additional amount of groundwater could be pumped at that source without serious drawdown and negative environmental consequences. ...Бојан Хајдин, Душан Поломчић, Зоран Стевановић, Драгољуб Бајић, Катарина Хајдин. "Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца" in XIV Српски симпозијум о хидрогеологији са међународним учешћем, Рударско-геолошки факултет, Београд (2012)
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Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning
The process of creating a geological block model as the basis for a further detailed design and planning of mining operations is a very responsible task. Errors made during this initial process are transferred to all other phases of the mining project. Certainly, one of the most important decisions for the modelling process is the choice of the appropriate size of the blocks that form the model itself. The determination of the optimal block size is not a simple ...dimenzije minibloka, višekriterijumska analiza, AHP, modeliranje ležišta, planiranje na površinskim kopovimaPetar Marković, Dejan Stevanović, Milica Pešić Georgiadis, Mirjana Banković. "Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning" in Underground Mining Engineering, Univerzitet u Beogradu, Rudarsko-geološki fakultet (2021)
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Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode
U cilju utvrđivanja rezervi podzemnih voda i analize uslova zaštite u periodu 2012. i 2013. godine, sprovedena su detaljna hidrogeološka istraživanja na području izvorišta Jasik (opština Batočina). Uspostavljen je sistem monitoringa, čiji je rezultat predstavljao prikupljanje detaljnih hidrogeoloških podataka. Za potrebe analize, izrađen je hidrodinamički model, na osnovu koga je simulirano kretanje podzemnih voda, odnosno, utvrđene zone sanitarne zaštite. Pored navedenog, za potrebe utvrđivanja uslova zaštite podzemnih voda, bilo je neophodno utvrditi podložnost aluvijalne izdani izvorišta Jasik zagađenju. Polazeći ...Rastko Petrović, Igor Jemcov, Dušan Polomčić. "Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode" in Vodoprivreda, Srpsko društvo za navodnjavanje i odvodnjavanje (2014)
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Развој геолошког терминолошког речника ГеолИССТерм
... to be able to meet all previously derived requirements and be func- tional within geolISS, the Uml model with a special structure was developed (Figure 2). The class Rečnik (Vocabulary) in the model is a lexi- cographic superclass whose instances are inher- ited. GeološkiRečnik (GeologicVocabulary) ...
... both cases we are dealing with the terms included in the vocabulary. Figure 4 shows the Uml domain management model. The abstract class MetaAd- min is inherited by other classes in the model. The Domain class is where all the data necessary for a description of some domain are registered: whether ...
... geologic-map Data model Science language Technical Team, 56 p. Soller, r. David, ed., 2004b. Sedimentary materials: science language for their classification, description, and interpretation in digital geologic-map databases, version 1.0 (12/18/2004), North American geologic- map Data model Science language ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Mine ventilation system planning using genetic algorithms
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 methodsNikola Lilić, Ranka Stanković, Ivan Obradović. "Mine ventilation system planning using genetic algorithms" in 6. international symposium on mine planning and equipment selection, Ostrava (Czech Republic), 3-6 Sep 1997, A.A. Balkema, Rotterdam (Netherlands) (1997)
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Using Metadata For Content Indexing Within An OER Network
Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)... The model and description of the proposed metadata set are described in Section 5, while section 6 is dedicated to its use case model, followed by conclusions in Section 7. 2. THE BAEKTEL OER FRAMEWORK The basic structure of the BAEKTEL OER framework isillustrated by the deployment model in Figure ...
... given. The model and description of the proposed metadata set are described in Section 5, while section 6 is dedicated to its use case model, followed by conclusions in Section 7. 2. THE BAEKTEL OER FRAMEWORK The basic structure of the BAEKTEL OER framework isillustrated by the deployment model in Figure ...
... means that resources can be published in different original languages, with adequate support offered for their translation[2]. The conceptual model of the ICT solution for BAEKTEL OER framework envisages a network of nodes offering OER content and a central repository,the BAEKTEL Metadata ...Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci. "Using Metadata For Content Indexing Within An OER Network" in Proceedings of the Fifth International Conference on e-Learning, eLearning 2014, September 2014, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2014)
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... of support deformation. Ding-Ping Xu et al. [1] compared the predictions from the rock–soil composite material model, where an analytic method, along with existing data from physical model tests, was applied to acquire results. Good consistency, both in terms of strength and failure Energies 2021, 14 ...
... of support deformation. Ding-Ping Xu et al. [1] compared the predictions from the rock-soil composite material model, where an analytic method, along with existing data from physical model tests, was applied to acquire results. Good consistency, both in terms of strength and failure Energies 2021, 14 ...
... [11] has presented a multi-step-ahead prediction model, based on a support vector machine, for tunnel surrounding rock displacement forecasting. This paper is divided into five sections. In the section Materials and Methods, we de- scribe the model of forecasting based on observed data and multivariate ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks. Fertile xenoliths and tiny mineral assemblages found in depleted xenoliths have been investigated. Fertile lithologies are represented by clinopyroxene (cpx)-rich lherzolite and spinel (sp)-rich olivine websterite containing Ti–Al-rich Cr-augite, Fe-rich olivine, Fe–Al-rich orthopyroxene and Al-rich spinel. Depleted xenoliths, which are the predominant lithology in the suite of East Serbian xenoliths, are harzburgite, cpx-poor lherzolite and rare ...Cvetković Vladica, Downes Hilary, Höck Volker, Prelević Dejan, Lazarov Marina. "Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts" in Geological Society Special Publication 337, London, United Kingdom :Geological Society (2010): 213-239. https://doi.org/10.1144/SP337.11
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Razvoj algoritma fuzzy optimizacije u hidrodinamičkoj analizi za potrebe projektovanja sistema odbrane od podzemnih voda
Dragoljub Bajić, Dušan Polomčić (2019)Sistemi za odbranu od podzemnih voda se koriste za zaštitu hidrotehničkih objekata, priobalja, meliorativnih područja, naselja, rudnika, industrijskih područja, predstavljajući značajne segmente bez kojih bi funkcionalnost ovih objekata i područja bila dovedena u pitanje. Posebno složeni sistemi odbrane od podzemnih voda se karakterišu kod ležišta mineralnih sirovina, imajući u vidu njihovu dinamičnost, koja se ogleda u stalnom širenju ležišta, kao i činjenicu da ova ležišta prodiru duboko u stensku masu različitog strukturnog tipa poroznosti, a time i u podzemne ...upravljanje podzemnim vodama, hidrodinamički model, fuzzy logika, trougaoni fuzzy brojevi, znanje eksperta, optimizacijaDragoljub Bajić, Dušan Polomčić. "Razvoj algoritma fuzzy optimizacije u hidrodinamičkoj analizi za potrebe projektovanja sistema odbrane od podzemnih voda" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1904527B
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Human factor risk management procedures applied in the case of open pit mine
Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak (2021)Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal ...Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak. "Human factor risk management procedures applied in the case of open pit mine" in Engineering Failure Analysis (2021). https://doi.org/https://doi.org/10.1016/j.engfailanal.2021.105456