Претрага
733 items
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Faktori uticaja na izbor optimalnog sistema odbrane od podzemnih voda kod površinskih kopova
Dragoljub Bajić, Dušan Polomčić (2015)Dragoljub Bajić, Dušan Polomčić. "Faktori uticaja na izbor optimalnog sistema odbrane od podzemnih voda kod površinskih kopova" in VII Međunarodna konferencija Ugalj 2015, Zlatibor 14-17. oktobar 2015., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2015)
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Stochastic simulation and prediction of turbidity dynamics in karst systems. Case study: Mokra karst spring (SE Serbia)
Veljko Marinović, Branislav Petrović (2021)Veljko Marinović, Branislav Petrović. "Stochastic simulation and prediction of turbidity dynamics in karst systems. Case study: Mokra karst spring (SE Serbia)" in Review of the Bulgarian Geological Society, Bulgarian Geological Society (2021). https://doi.org/10.52215/rev.bgs.2021.82.3.222
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Simulation of Migration of Nitrate Contamination in Epikarst Groundwater: A Column Laboratory Method
Branislav Petrović (2021)Branislav Petrović. "Simulation of Migration of Nitrate Contamination in Epikarst Groundwater: A Column Laboratory Method" in Karst: From Top to Bottom, Belgrade, 6.6.2021., Belgrade : Centre for Karst Hydrogeology (2021)
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Primena fuzzy optimizacije u hidrodinamičkoj analizi
znanje eksperta, optimizacija, trougaoni fuzzy brojevi, upravljanje podzemnim vodama, fuzzy logika, hidrodinamički modelDragoljub Bajić, Dušan Polomčić, Jelena Ratković, Predrag Pajić. "Primena fuzzy optimizacije u hidrodinamičkoj analizi" in XVII Kongres geologa Srbije (Zbornik radova XVII srpskog geološkog kongresa), Vrnjačka Banja, 17-20.05.2018., Srpsko geološko društvo (2018)
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... širokog spektra problema koji postoje u mehanici fluida. Pretprocesiranje NISA/3D-FLUID sadrži pret-procesorski modul DISPLAY. Ovo je 3D interaktivni kolor grafički program sa velikim mogućnostima generisanja modela konačnih elemenata i definisanja problema. Osnovne mogućnosti modeliranja su sledeće: ...
... drvo, 121 Modeli, 20 Džeržinskog, 238 Danka, Muse-Džounsa, 238 deskriptivni, 20 fizički, 20 Grojera,238 matematički, 21 proceduralni, 20 simbolički, 20 Simoda, 238 strujanja fluida, 46 Mreža, 99 ventilaciona, 100 Mutacija, 166 N Navije-Stoksove jednačine, 58, 65 NEXPERT, 287 NISA/3D FLUID, 50, ...
... Turbulence Model On the Finite Elements Methods…………………………………………………………...75 Finite Elements Approximation The Algorithmic Concept of the Finite Elements Method Application of CFD Software in Solving Mine Chamber Ventilation Problems…….79 Characteristics of CFD software General Description of NISA/3D – FLUID ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000
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Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika
Saša M. Jovanović (2016-05-16)Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...... determinističkim modelima. U ovakvim uslovima, matematičko modeliranje sistema zasniva se na proširivanju determinističkog modela uvođenjem slučajnosti. Ove slučajnosti se opisuju terminima verovatnoće i krajnji ishod je stohastički model sistema. Uopšteni oblik stohastičkog modela predstavljen je ...
... 03:57:19 Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika;Fuzzy stochastic model of underground development system selection. Saša M. Jovanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Fuzzy stohastički model izbora sistema otvaranja ...
... uvođenje što realističnijih pretpostavki u razvoju fuzzy stohastičkog modela za izbor optimalnog sistema otvaranja podzemnog rudnika, (3) postavljanje dinamičkog optimizacionog modela i (4) provera valjanosti postavljenog modela u rešavanju praktičnih problema. 3 1.3 Polazne postavke ...Saša M. Jovanović. "Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-05-16)
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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The Dictionary of the Serbian Academy: from the Text to the Lexical Database
In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...... published. For the de- velopment of the lexical database model for the DSA, a similar approach was used as in Stanković et al. (2018) for the Serbian morphological electronic dictionary. The main class, in the core of this dic- tionary model, is LexicalEntry, representing a headword of the dictionary ...
... as outlined in Stijović and Stanković (2017). Figure 4: Database model with mapped dictionary article segments. For languages with complex morphology, such as Serbian, information about inflection is very im- portant. In our model we used the class Forms to store the information related to the inflected ...
... ontologies (TEI, LMF, Ontolex, LexInfo). A lexical database mod- el was designed in compliance with these structured forms, following mostly the lemon model. Mapping of the lexical entry markers to LexInfo and TEI enabled export of the lexical data to the mentioned formats. A software solution for the ...Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo. "The Dictionary of the Serbian Academy: from the Text to the Lexical Database" in Proceedings of the XVIII EURALEX International Congress: Lexicography in Global Contexts, Ljubljana : Ljubljana University Press, Faculty of Arts (2018)
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Stochastic Prediction of Temporal Variations of Karst Groundwater Regime in Function of Sustainable Management: Case Study Mokra Karst Spring (SE Serbia)
Veljko Marinović, Branislav Petrović (2021)Veljko Marinović, Branislav Petrović. "Stochastic Prediction of Temporal Variations of Karst Groundwater Regime in Function of Sustainable Management: Case Study Mokra Karst Spring (SE Serbia)" in Karst: From Top to Bottom, Belgrade, 6.6.2021., Belgrade : Centre for Karst Hydrogeology (2021)
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Concept od predictive hydrodynamic calculations: An overview of the case studies from Serbia
Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Vesna Ristić Vakanjac, Marina Čokorilo Ilić (2019)groundwater management, hydrodynamic model, multiple-criteria decision making, open cast mine, groundwater source.0Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Vesna Ristić Vakanjac, Marina Čokorilo Ilić. "Concept od predictive hydrodynamic calculations: An overview of the case studies from Serbia" in National Conference with international participation “Geosciences 2019”, Bulgaria, 2019, Sofia : Bulgarian Geological Society (2019)
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... and Scientific Colourmaps (Crameri 2018). The analogue model experiment has been conducted in the framework of the PhD project of Nemanja Krstekanić. R E F E R E N C E S Adam, J., Klinkmüller, M., Schreurs, G. & Wieneke, B., 2013. Quantitative 3D strain analysis in analogue experiments simulating tectonic ...
... have designed a model setup such that different regions of the model experience a wide range of different types of deformation: strike-slip faults (simple shear), normal faulting (extension) and thrust faulting (shortening). In the later stages of the model evolution, a part of the model undergoes a clockwise ...
... Diff. Stress (Pa) 0 2 1 C om pression S trik e -s lip N V 30° 4.5° clockwise rotation Figure 11. Model set-up: (a) Initial model set-up. All numbers are in centimeters. (b) Model configuration at the end of the experiment. Moving plate kinematics include the first step of 4 cm of translation ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Numerical simulation of the Late Jurassic closure of the Vardar Tethys
... utilizes marker in cellapproach with finite difference discretization of equations on a staggered grid [Gerya et al., 2000;Gerya&Yuen, 2003]. The 2D model consists of two continental plates separated by two oceanic slabs connected at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge ...
... ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed on thesimulation in order to model a transient spreading period. The change of sign in plate velocities isfound to be useful for both obtaining obduction / ophiolite emplacement [Duretz et al. ...
... two convergent phases separated bya single divergent phase where spreading regime is dominant. Effect of duration and magnitude ofthe second phase on model evolution is also explored. Our so far obtained simulations were able to reproduce the westward obduction and certainextension processes along the active ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "Numerical simulation of the Late Jurassic closure of the Vardar Tethys" in EGU General Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-9893
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2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys
... utilizes marker in cellapproach with finite difference discretization of equations on a staggered grid [Gerya et al., 2000;Gerya&Yuen, 2003]. The 2D model consists of two continental plates separated by two oceanic slabs connected at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge ...
... ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed on thesimulation in order to model a transient spreading period. The change of sign in plate velocities isfound to be useful for both obtaining obduction / ophiolite emplacement [Duretz et al. ...
... two convergent phases separated bya single divergent phase where spreading regime is dominant. Effect of duration and magnitude ofthe second phase on model evolution is also explored. Our so far obtained simulations were able to reproduce the westward obduction and certainextension processes along the active ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys" in EGU General Assembly 2020, Copernicus GmbH (2020). https://doi.org/10.5194/egusphere-egu2020-5919
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Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian
The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...... (DNNs) (Huang et al., 2015; Choi, 2016; Akbik et al., 2018). The first operational tagger and lemmatization model for Serbian were produced as a parameter file (TT11) for the TreeTagger model (Schmid, 1999) after a thorough anal- ysis of the state-of-the-art solutions (Popović, 2010), and subsequently ...
... two taggers trained on the largest train- ing set (SR-{100}). We used it to train the following tag- gers: 1) SerSpaCy, a spaCy model, and 2) TT19, a Tree- Tagger model. We used T11 as the baseline for evaluation, since it was already tested and evaluated as part of a pre- vious research (Popović ...
... final schema in Subsection 3.2. The main fea- tures of the tools used for tagging are described in Subsec- tion 3.3. Evaluation results of spaCy model are compared with the results obtained by the TreeTagger trained on the same dataset, as well as with a previous version of TreeTag- ger for Serbian ...Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić. "Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian" in Proceedings of the 12th Language Resources and Evaluation Conference, May Year: 2020, Marseille, France, European Language Resources Association (2020)
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Production information system of the Pljevlja coal mine
Božo Kolonja, Ranka Stanković, Filip Vuković . "Production information system of the Pljevlja coal mine" in Mine Planning and Equipment Selection 2000, Routledge (2018). https://doi.org/10.1201/9780203747124-154
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Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom
Saša D. Bošković (2016-09-09)Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije... .. 117 Slika 5.8. Model strele rotora ............................................................................. 124 Slika 5.9. Model rotora ....................................................................................... 125 Slika 5.10. Raĉunski modeli strele rotora ......... ...
... nauĉni doprinos kroz definisanje metodologije, izradu simulacionog modela rada rotornog bagera, izradu modela radnog organa rotornog bagera (strele i rotora) metodom konaĉnih elemenata i terenska merenja koja će verifikovati model rada bagera i dinamiĉko ponašanje pri otkopavanju materijala sa povećanom ...
... bagera; 8 - Definisanje metodologije kroz izradu simulacionog modela rada rotornog bagera, izradu modela radnog elementa rotornog bagera (strele i rotora) metodom konaĉnih elemenata i terenska merenja koja će verifikovati model rada bagera i dinamiĉko ponašanje pri otkopavanju materijala sa ...Saša D. Bošković. "Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-09)
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Geotehnička istraživanja terena za potrebe izgradnje mosta preko Aleksandrovačkog potoka na autoputu E-80, deonica Niš-Merošina
Danijela Sušić (2023)Geotehnička istraživanja terena, odnosno određene lokacije, izvode se za potrebe projektovanja, odnosno definisanja uslova izgradnje objekata. Njihova osnovna namjena jeste upoznavanje i prikupljanje informacija o sastavu i svojstvima geološke sredine koje bi mogle da nam omoguće planiranje, projektovanje, izgradnju, kao i racionalno korišćenje samog objekta. U ovom radu, detaljno je prikazan način svih izvršenih istraživanja, za potrebe izgradnje mosta na osnovu kojih je urađen grafički dio, proračun nosivosti plitko fundiranog mosta i proračun analize slijeganja terena. Za proračun dozvoljenog opterećenja ...geotehnička istraživanja, terenska istraživanja, laboratorijska ispitivanja, geotehnički model terena, plitki temeljiDanijela Sušić. Geotehnička istraživanja terena za potrebe izgradnje mosta preko Aleksandrovačkog potoka na autoputu E-80, deonica Niš-Merošina, 2023
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Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling" in GeoMod 2021, Doorn, the Netherlands, 19.-23.9.2021., Utrecht University (2021)
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке
... ranijih arheoloških rekognosciranja. U tu svrhu korišćena je Ojlerova 3D dekonvolucija (O3DD) na magnetomet‐ rijskim podacima. Da bi se dobili što bolji ulazni parametri prvo je izvršeno testiranje O3DD na sinteti‐ čkim modelima. METODE Magnetometrija se zasniva na merenju magnetnog polja Zemlje ...
... Ојлерове 3Д деконволуције на магнетометријске податке Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције ...
... USING EULER 3D DECONVOLUTION ON MAGNETIC DATA Vesna Cvetkov1, Ilija Vasiljević2, Branislav Sretenović1 , Vesna Damnjanović1 1) University of Beograde, Faculty of Mining and Geology, e‐mail: vesna.cvetkov@rgf.bg.ac.rs 2) NAFTAGAS‐Oilfield services d.o.o. Novi Sad Key words: Euler 3D deconvolution ...Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић. "Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке" in Књига апстраката 17. Конгрес геолога Србије, Врњачка Бања 17-20. мај, Српско геолошко друштво (2018)