Претрага

Упит dcterms_subject_txt:stohastički sivi model

817 items

  • Dvodimenzionalna geometrijska morfometrija prvih gornjih molara hominina sa teritorije Srbije - taksonomska i metodološka analiza

    Predrag N. Radović (2022)
    Primarni cilj ove studije tiče se taksonomske identifikacije fosilnih prvih gornjih molara (M1) hominina pronađenih u Srbiji, primenom metoda dvodimenzionalne (2D) geometrijske morfometrije. U prvoj (metodološkoj) fazi istraživanja ispitana je efikasnost 16 različitih pristupa (geometrijskih modela) u klasifikaciji M1 neandertalaca i anatomski modernog čoveka. Modeli su testirani na dva seta okluzalnih projekcija krunica (n = 34 i n = 64) dobijenih orijentisanjem digitalnih 3D modela u virtuelnom okruženju ili fotografisanjem fizičkih primeraka zuba. Prilikom testiranja primenjena je klasifikacija zasnovana ...
    2D geometrijska morfometrija, prvi gornji molar (M1), taksonomska identifikacija, neandertalci, anatomski moderni ljudi, Pešturina, Velika Balanica, Srbija

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... deformation. 4.1. Reference model: model 1 Model 1 consists of a rigid indenter with rounded corners, while the surrounding, deformable material is entirely brittle (Table 1, Fig. 2a, e). Deformation results only from northward translation of the model layers. Model 1 (Fig. 3) documents the development ...
    ... (e.g., Kräutner and Krstić, 2003; Schmid et al., 2020). Note that the shear strain rate is Table 1 Model parameters. Model type: b - brittle only, b-v– brittle-viscous. Model number Model type Brittle layer thickness (cm) Viscous layer thickness (cm) Rigid block geometry Engine ...
    ... earlier deformation. 4. The reference model and parametrical study The results are described starting with a detailed analysis of a “reference model” (Model 1, Fig. 3), to which we compare the results of a parametric study (Figs. 4–7) and the best-fit model (Fig. 8). The latter serves to demonstrate ...

  • Uticaj utiskivanja gas-lift gasa na prenos mase i toplote

    Branko Grubač (2019)
    Nakon uvođenja kontinualnog gas-lifta, primećen je porast proizvodnje tečnog naftnog gasa, TNG, u postrojenju za preradu gasa, kao jednog od finalnih proizvoda dobijenog iz fluida gaso kondenzatnih i rastvorenog gasa iz naftnih bušotina. Pretpostavljeno je da se prisustvom gas-lift gasa uspostavlja drugačija ravnoteža faza u odnosu na slučaj bez gaslifta, te da je gas-lift gas stripovao propan i butane iz tečne u parnu fazu, što je dovelo do povećanja prinosa TNG-a. Napravljen je model bušotine koja radi u kontinualnom gas-liftu ...
    gas-lift, modelovanje bušotine, prenos mase i toplote, taloženje parafina
    ... Čang (Chung) modeli AEA i Čang modeli baziraju se na modelu Pedersona [92]. Za AEA model, izraz za konstantu fazne ravnoteže komponente i, (Ki) je: 𝑙𝑛 𝐾𝑖 = ∆𝐻𝑖 𝑓𝑅𝑇 (1 − 𝑇𝑇𝑖 𝑓) + ∆𝐶𝑝𝑅 [1 − 𝑇𝑖 𝑓𝑇 + 𝑙𝑛 𝑇𝑖 𝑓𝑇 ] + ∫ 𝑉𝑖𝐿 − 𝑉𝑖 𝑆𝑅𝑇 𝛿𝑃𝑃 0 6.2.39 AEA model je jedini ...
    ... su implementirani sledeći modeli: - Chung - Pederson - Conoco (Erikson) - AEA Navedeni modeli zahtevaju detaljno poznavanje sastava fluida. Modeli se zasnivaju na izračunavanju konstante fazne ravnoteže između čvrste i tečne faze. 6.2.7 Pederson (Pederson) model taloženja parafina Konstanta ...
    ... 6.2.6 Matematički modeli za procenu taloženja parafina u programu Aspen HYSYS .................... 74 6.2.7 Pederson (Pederson) model taloženja parafina .................................................................... 74 6.2.8 Konoko (Conoco) – Eriksonov (Erickson) model ................... ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Језички модели, шта је то?

    Ми­ха­и­ло Шко­рић (2023)
    Језички модели

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... Unlike the conventional model, the final grade can be divided into several outcomes. The synthesis was made using the fuzzy theory and the AHP ranking model. The model is illustrated using the example of the bulldozer. Verification was made by comparing the results of the new model and the conventional ...
    ... intensity of the same. The model can be used as a simple tool in asset management in the sense of machine comparison and weak point analysis [18]. The model will be illustrated with the example of auxiliary machinery working in EPS (Electric Power Industry of Serbia) mines. The model will be verified by using ...
    ... synthesis model is represented through the fuzzy inference model where inputs are represented with fuzzificated estimates of partial indicators, and the rules of fuzzy composition are defined through outcomes that are corrected on the basis of ranks. 2.2.1. Fuzzy Inference in the Synthesis Model Availability ...

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • 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 ...
    ... al Neural Ne- twork (CNN) architecture, having F1 score of ≈91% on the test dataset. This model has been further assessed on a separate eva- luation dataset. We wrap up with compa- rison of the developed model with the exi- sting one, followed by a discussion of pros and cons of the both models. 1 ...
    ... places (LOC), events (EVENT) and organizations (ORG).8 4 SrpCNNER Model for Serbian In this section we first explain how we have turned the SrpELTeC corpus into a dataset for NER. Afterwards, we describe the training of the NER model SrpCNNER, followed by a detailed evaluation. Web users can naviga- ...
    ... naviga- te to http://ner.jerteh.rs/ in order to apply the SrpCNNER model directly on input text. The model can also be applied to a custom- size collection of text files using the previously mentioned NER&Beyond web platform. story), https://zenodo.org/communities/eltec 7 SrpELTeC, https://distantreading ...

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... in OOA model Figure 1. Modified Coad-Yourdon object The strategy for evaluation of the general ventilation state of the mine is formally represented using a modification of the Coad- Yourdon object-oriented analysis (OOA) model (Coad and Yourdon, 1991). In the classical model every real ...
    ... knowledge, this model was modified by including a new (fourth) element, featuring the production (IF-THEN) rules related to an object in the model /Fig. 1/. Thus both the procedural and declarative knowledge related to a class object could be represented. Such a modified OOA model was the used ...
    ... can be either classes or instances within classes. The relationships among the objects in a model can be represented by linking them together into a hierarchical structure. Thus the modified OOA model based on the strategy for evaluation of the general ventilation state of the mine could be ...

  • Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)

    Dejan Radivojević, Ljupko Rundić (2017)
    ... 04:22:03 Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia) Dejan Radivojević, Ljupko Rundić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Tectono-lithostratigraphic model of the Northern Banat Miocene sediments ...
    ... is available at: www.dr.rgf.bg.ac.rs 53 7th International Workshop | Neogene of Central and South-Eastern Europe TECTONO-LITHOSTRATIGRAPHIC MODEL OF THE NORTHERN BANAT MIOCENE SEDIMENTS (PANNONIAN BASIN, SERBIA) Dejan Radivojević* & Ljupko Rundić University of Belgrade, Faculty of Mining ...
    ... MAGYAR et al., 2013). °e database consisted of numerous seismic data, both 2D and 3D, and exploration wells data allowed building of subsurface model of explored area. Special emphasis was placed on the Miocene sediments which are the most valuable part of sedimentary cover due to its economic ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... role in performing the evaluation of a project is played by the Evaluation Model (EM). EMs are approaches that assist evaluators in designing and carrying out useful, effective evaluations [19]. The terms approach and model, referred to evaluation are often used in an alternative way, although ...
    ... and causal links among activities, resources, outputs, purposes of the project proposal. The paper highlights peculiarities and weaknesses of this model for an effective evaluation. Keywords: E-Learning project, Evaluation, Logical framework approach. 1. INTRODUCTION Evaluation of E-learning ...
    ... with the evaluation of E- Learning Project,; section 4 reports the application of the LFA to an E-Learning project as prospective evaluation model; section 5 outlines implications and presents some conclusions for the research. 2. EVALUATION OF PROGRAM AND PROJECTS The scientific debate ...

  • Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije

    Branko R. Miladinović (2016-04-27)
    Ugalj predstavlja energent na čijoj osnovi se razvija privreda celog sveta.Zato mu se pridaje velika pažnja u eksploataciji i preradi, bez obzira na mnogeštetne uticaje na životnu sredinu, a posebno na efekat staklene bašte koji sestvara emisijom zagađujućih materija u atmosferu radom termoelektrana naugalj.U Srbiji, resurs koji se danas u najvećoj meri koristi u proizvodnjielektrične energije je ugalj i on učestvuje u proseku sa 70 %. U strukturi ukupneproizvodnje ugljeva, dominiraju lignitski ugljevi sa učešćem od 98 %, a ...
    Srbija, kameni i mrki ugalj, podzemna eksploatacija, preradauglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životnasredina
    ... mestimično prelaze u šljunkove (bušotine: B-3/87, B-4/87, B-14/8, B-16/8 i dr.), Filipović i dr. 1988. Pored slabo vezanih konglomerata, prisutne su sive, zelene i žute peskovite i laporovite gline sa karbonatnim konkrecijama i sočivima peskova. Peskovi se često nalaze i u samom završnom delu ove ...
    ... ugljonosnog horizonta izgrađuju peščari i glinci krovinskog dela lijasa (J1). Konkordantno preko njih, leže tvorevine dogera (J2). Izgrađiju ih sivi alevroliti i sitnozrni peščari – kalkareniti i markantna sekvenca kvarcnih peščara, konglomerata i mikrokonglomerata koji se smenjuju (Stakić 2006) ...
    ... horizonta i to: tufogeno-laporoviti i karbonatno-pelitski. Prvi horizont čini direktnu povlatu ugljonosnom horizontu i predstavljen je tamno sivim laporcima u kojima se sreću fosilni ostaci flore i komadići uglja (slika 71.). Debljine su 4-17 m (Lojanica 2005). Preko ovih krovinskih laporaca ...

  • Optimalni model kinetike flotiranja minerala obojenih metala

    Predrag Lazić (2002)
    Kinetika, flotiranje, obojeni metali

  • Model i organizacija geoprostornih podataka za razmeru 1:50000

    Mirko Borisov (2004)
    Geodezija, geoprostorni podaci

  • Geotehnički modeli aluvijalnih sedimenata Novog Beograda

    Zoran Radić (2007)
    Geotehnika, aluvijalni sedimenti, Novi Beograd.

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... environment and by particular blasting conditions. 2.2.1. Model 1—Determining the Parameters by Applying the Least Square Method The least square method is mainly used to obtain the parameters K and n representing a common model [5,6]. 2.2.2. Model 2—Determining the Parameters by Applying the Quotient ...
    ... of the relative growth of oscillation velocities and reduced distances for Model 2. The link between the parameters K and n is determined by applying the trapezoidal formula for finding the value of definite integral for Model 3. In doing so, it was noted that all three models can be used to calculate ...
    ... parameter n, all experimental data were taken into account. 2.2.3. Model 3—Determining the Parameters between Parameters K and n is Determined by Applying the Trapezoidal Formula for Finding the Value of Definite Integral In this model we will use the trapezoidal formula [8] to find the approximate value ...

  • Model određivanja parametara zakona oscilovanja stenske mase pri miniranju

    Suzana Lutovac (2010)
    Oscilovanje, miniranje, stenska masa.

  • Development of Integrated Fuzzy Model for Mine Management Optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    Technoeconomic, environmental and safety criteria generally affect the management of metallic and non-metallic mining operations. The first basic question that needs to be addressed when planning ore mining is which methods are adequate and what is the optimal mining technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered synonymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increasingly important. Given that the natural language ...
    mining technology, expert evaluation, triangular fuzzy numbers, multicriteria decision making

  • Model otvaranja ležišta nafte u funkciji karakteristika kolektor stena

    Mišo Soleša (1993)
    Otvaranje ležišta nafte, kolektor stene