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Упит dcterms_subject_txt:numeriki modeli,neuronske mreže

860 items

  • Numerical modelling of a single intra-oceanic subduction for the origin of the Balkan ophiolites

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • 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 ...

  • Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца

    Бојан Хајдин, Душан Поломчић, Зоран Стевановић, Драгољуб Бајић, Катарина Хајдин (2012)
    ... 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. ...

  • Modeliranje buke u urbanoj sredini u okolini Doma zdravlja u Pančevu

    Stefan Mandić (2024)
    Prisustvujemo epohi gde buka predstavlja veoma rasprostranjen i moderan fenomen koji možemo deklarisati kao problem. Svedoci smo toga da moderni problemi zahtevaju malo drugačiji pristup nego u prošlosti, odnosno zahtevaju moderna rešenja. Samim tim, vremenom je došlo do modernizacije alata,u ovom slučaju došlo je do razvoja modela za rasprostiranje buke koji su se vremenom unapređivali pa tako danas imamo jedno moćno sredstvo za borbu protiv buke u vidu kompjuterskog softvera.Ovaј master rad, pod nazivom „Modeliranje buke u urbanoj sredini ...
    buka, zvuk, saobraćaj, modeliranje, merenje buke
    ... da pažljivo uporedimo rezultate sa terena i one dobijenih putem modela. Sve to u cilju pronalaska efikasnog rešenja za smanjenje uticaja buke. Ovim master radom obuhvaćeni su svi potrebni koraci za uspešnu izradu kompjuterskog modela za potrebe modeliranja rasprostiranja buke u urabnim sredinama ...
    ... results from the field and those obtained through the model. AlI this in order to find an effective solution to reduce the impact of noise. This master's thesis covers all the necessary steps for the successful creation of a computer model for the purposes of modeling noise propagation in industrial ...
    ... Beogradu Modeliranje rasprostranjenosti buke u urbanoj sredini u okolini Doma zdravlja „Pančevo“ 8 RAZVOJ MODELA ZA MAPIRANJE BUKE Za problem kao što Je buka, razvijeni su modeli koji nam omogućuju da predvidimo uticaj buke. Za modeliranje uticaja buke u okolini „Doma zdravlja Pančevo“ , ...

  • Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data

    Vesna Cvetkov, Ilija Vasiljević, Mirko Petković (2015)

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... 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 ...

  • Specifičnosti izgradnje deonice 3 brze saobraćajnice Požarevac-Golubac na organskom tlu

    Vojislav Lučić (2024)
    U ovom završnom radu prikazani su podaci koji se odnose na metode ojačanja terena izgrađenog od slabonosivog organskog tla, kao i njegove geotehničke karakteristike na primeru šireg istražnog prostora, u okolini sela Kumane duž trase treće dionice brze saobraćajnice Požarevac-Golubac. U radu su prvo prikazane osnovne karakteristike i podele organskog tla i treseta, zatim su navedene metode ojačanja tla koje mogu da se koriste na datom istražnom prostoru i na kraju je izvršena analiza i interpretacija rezultata geotehničkih istraživanja ...
    organsko tlo, treset, metode ojačanja slabonosivog tla, slieganje, konsolidacija i vremenski tok konsolidacije
    ... u sloju. 7.1. Proračun dozvoljenog opterećenja bez sloja zamjene Na slici 17 je prikazan model terena sa nasipom bez sloja zamjene na stacionaži od km 48+490 do km 49+350. -36.0000-. Slika 17 — Model terena bez sloja zamjene PODACI O NASIPU dn = Y * H dn = 19 * 3.5 d„ = 66.5 kPa PRANDLOVA ...
    ... 4. Proračun dozvoljenog opterećenja nasipa sa slojem zamjene Na slici 24 je prikazan model terena sa nasipom sa slojem zamjene na stacionaži od km 48+490 do km 49+350. 38.0000- -36.0000. Slika 24 – Model terena sa slojem zamjene SKEMPTONOVA METODA dfF = u *NC+YZPt*Df dr = 10 * 5.14 + ...
    ... 100 - 150 m na prostoru površine oko 4.5 km?, na topografskoj podlozi razmjere 1:2500. Kartiranje terena Je izvedeno postupcima prekrivanja terena mrežom tačaka osmatranja, i ono predstavlja osnov za svako dalje istraživanje. Njegovi rezultati su prikazani u vidu inženjerskogeološke karte i inže ...

  • 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 ...
    Теренско мерење, Ерозија земљишта, Јаруга, Џепна крилна сонда, Џепни пенетрометар

  • 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 ...

  • 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 ...

  • 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

  • Simpson's rule application for experimental determining parameters of rock mass oscillation equation at limestone

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Branko Gluščević, Luka Crnogorac (2021)
    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 rule

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... results for MB removal by KOH activated glucose and fructose samples (measured at 664 nm) were then fitted to different kinetic model: pseudo I, pseudo II and Elovich model, which linear forms are given in Equations (1)–(3) [65], respectively: ln qt qe = k1t (1) t qt = 1 k2·q2 e + 1 qe t (2) ...
    ... – – – – – −3 −3 qt = I + kDt1/2 Figure 8. Linear fits of Pseudo II order kinetic model for KOH activated glucose and fructose samples. Table 7. Characteristic parameters of the Pseudo II order kinetic model for MB removal. Kinetic Parameter AC@G–750–N2–1.0–KOH AC@F–750–N2–1.0–KOH qe, exper (mg/g) ...
    ... rate, and to get additional information about binding mechanism of MB on both adsorbents, the intra-particle diffusion model was also applied. The mathematic form of the diffusion model is given in Equation (4) [65]: qt = I + kDt1/2 (4) where qt (mg/g) is adsorbed amount of MB in time t (min), kD (m ...

  • Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning

    Petar Marković, Dejan Stevanović, Milica Pešić Georgiadis, Mirjana Banković (2021)
    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 kopovima

  • Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode

    Rastko Petrović, Igor Jemcov, Dušan Polomčić (2014)
    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 ...
    Izvorište Jasik, GLA metoda, zaštita podzemnih voda

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... well as the site, for example, a pit, a landfill, workshop or plant. Figure 8 shows part of the conceptual data model. More details about model are available in [15] logical data model of Kanakov. 4.2. Development Environment The relational database management system used was PostgreSQL (The PostgreSQL ...
    ... which depends on the number of factors within the AHP analysis. If CR < 0.1 (10%) the model is consistent. According to Sati a deviation of CR up to 0.3 (30%) is tolerated, but if CR > 0.3 (30%) a correction of the model is necessary. Figure 6 shows the factors taken into account when ranking abandoned ...
    ... with KaNaKov to avoid duplication of resources and to ensure that full synergies are achieved. 4. Materials and Methods 4.1. Geodatabase Model The geodatabase model was developed using Unified Modeling Language (UML) and Computer-Aided Software Engineering (CASE) tool Microsoft Visio (Microsoft Corporation: ...

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... for their enclosure to provide extended use throughout the year. Depending on the business model, we can consider this starting model to be not economically demanding and able to serve as a demonstration model to attracting further investment and multiplication in other locations. Author Contributions: ...
    ... they were not further discussed in detail at this stage of the research. Figure 7. Model for modular wellness facilities with optional hospitality and medical facilities. 2.2. Architectural Model—Boundary Conditions and Calculation Methodology Following the principles of modular design, modules ...
    ... formulated architectural model for balneological application based on sustainable and green design strategies, the paper illustrated a possible development concept that could serve as an implementation tool for activation at various locations. The developed architectural model showed good potential both ...

  • Analiza mogućnosti primene tehnologije hvatanja i skladištenja ugljenika (CO2) na objektima Nis-A

    Isidora Veljanoski (2024)
    U ovom radu opisana je primena CCUS tehnologija u kompaniji NIS i na koji način treba da se optimizuje da bi projekat bio rentabilan.U prvom i drugom poglavlju opisani su energetski trendovi i tranzicije, razvojni mehanizmi za regulisanje emisije gasova staklene baste i o ugljen-dioksidu kao hemijskom jedinjenju i šta je to CCUS.U trećem, četvrtom i petom poglavlju je detaljnije opisano izdvajanje, hvatanje, transport i skladištenje ugljen-dioksida.Šesto poglavlje i sedmo poglavlje obuhvataju rešenja za razvoj i realizaciju CCUS projekata ...
    energetski trendovi, ugljen-dioksid, CCUS, izdvajanje, hvatanje, transport i skladištenje CO2, ležište, ekonomija projekta
    ... se direktno utiskuje u bušotinu. [21 45 8.1 Ekonomija potencijalnog projekta Ekonomski model je alat koji se koristi za razumevanje i predviđanje ponašanje ekonomskih elemenata. Ekonomski modeli predstavljaju pojednostavljene verzije stvarnog ekonomskog sistema, koristeći pretpostavke ı ...
    ... procese i interakcije. Ekonomski modeli pomažu u predviđanju efekata ekonomskih odluka, testiranju različitih scenarija, analiziranju tržišnih dinamika i donošenju informisanih odluka u vezi s ekonomskom politikom ili poslovnim strategijama. Ekonomski modeli su neophodni za donošenje informisanih ...
    ... zavise od tačnosti pretpostavki koje su ugrađene u model. KPI (Key Performance Indicators) su kvantitativne karakteristike koje se koriste za merenje uspeha kompanije, projekta ili sektora u odnosu na postavljene ciljeve. U kontekstu ekonomskog modela, KPI omogućava praćenje konkretnih rezultata ...