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Упит dcterms_subject_txt:linguistic linked open data

1266 items

  • Model of the Geomagnetic reference field of the Republic of Serbia

    Spomenko J. Mihajlović, Vesna Cvetkov (2024)

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... administration, Methodology, Investigation, Funding acquisition, Formal analysis, Data curation, Conceptualization. Maja Todorović: Writing — review & editing, Visualization, Validation, Investigation, Formal analysis, Data curation. Aleksandar Jemcov: Writing – review & editing, Validation, Supervision ...
    ... the surrounding rock masses and observing the impact of hydraulic transients generated by HPP operation. A comprehensive analysis of monitoring data, incorporating ordinal and partial correlations and considering geological features, provides a profound understanding of groundwater dynamics, ...
    ... operational conditions of a hydropower plant along the entire tunnel length, spanning from the surge tank up to the reservoir. Analyzing monitoring data during hydropower plant operation while considering geological features enabled a deeper understanding of groundwater dynamics, pressure transient ...

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... this research. Experts assigned a linguistic variable to each pair of criteria by making a pairwise comparison with respect to the priority of identified criteria, as well as a pairwise comparison of RESs with respect to socio-political criterion. Each of these linguistic variables is assigned one of the ...
    ... has a higher share for 45.52%, i.e., biomass has ‘‘absolute importance’’ over wind energy. Each of the linguistic variables is assigned one of the triangular fuzzy numbers (TFNs). The linguistic variables and corresponding intervals of the differences of indicator values’ share, as well as the appropriate ...
    ... and national and international data which deals with the quantitative and qualitative analysis of the utilization of RES for electricity generation. In the parts of the presented assess- ment for which there are no reference data from governmental and expert bodies, data from expert assessments and studies ...

  • Stabilnost kosina u stenskoj masi - savremeni koncepti i metode proračuna

    Zoran Berisavljević, Dušan Berisavljević, Miloš Marjanović (2021)
    Stabilnost kosina
    ... inzenjeru i pogodan je za onoga ko Zeli da se dalje usavrSava u ovoj oblasti. Reference navedene na kraju knjige omogucéavaju zainteresovanom Ccitaocu da produbi svoje znanje iz oblasti koja ga zanima. Knjiga je podeljena u Sest poglavija i koncipirana je tako da se, pored teorijskih Znanja, saviadaju ...
    ... Napominje se da se danas u praksi sve CeSée koriste i trodimenzionalni postupci modeliranja, pa je iz tog razloga u poglavlju 4 prikazan trodimenzionalni postupak za analizu odrona. Na kraju, Zzelimo da se najiskrenije zahvalimo revidentima koji su korisnim sugestijama i komentarima omoguCili da tekst dobije ...
    ... dobije na dodatnom kvalitetu, kao i svojim porodicama bez Cije podrske ova monografija ne bi mogla biti pripremljena. Zelimo da naglasimo da éemo sa zahvalno&éu prihvatiti primedbe i sugestije Citalaca koje bi dovele do poboljSanja publikacije. Beograd, 2021. Autori Predgovor ll Stabilnost kosina ...

  • 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)

  • Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage

    Maja Milošević, Biljana Đorđević, Alena Zdravković (2021)
    ... calcite. The most common mineral is quartz, followed by illite/mica, plagioclase and feldspar. Less present phases are amphibole and calcite. SEM data of the investigated sample shows clay particles of different sizes, which are mostly arranged in a face-to-face pattern. Pseudo-hexagonal mineral ...
    ... be regarded as illite and/or halloysite. Morphology varies from short tubular, spheroidal and elongated tubules, which are the most common. EDS data confirmed hydroxides of illite and iron. Illite minerals deposited from formation waters in sandstones often appear in the form of slats and tiles ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 9th International Conference ...

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... system’s global model data structure, which had to model all relevant parameters of complex mine ventilation networks, the design and realization of database was executed in the MSAccess relational database management system. The system offers safe data archiving for complex data models as this one ...
    ... one, as well as all procedures for data manipulation. The use of SQL as a standard query language for data manipulation secures the openness of the hybrid system INVENTS for a connection with different environments. The VENTEX [2] system was developed as a knowledge-based (symbolic) upgrade of the ...
    ... the system we have used NeuroWindows, GeneHunter and VisualBasic for data processing and NN training. Hybrid system for analysis of area airpollution load GIS PollutNet AIRPRES Expert system for air pol lution analysis Data model NM-GA prediction Characterization of ECO domain CFD model ...

  • Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije

    Branko M. Petrović (2016-07-12)
    Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...
    površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija
    ... laboratorijskih ispitivanja, može često biti nedovoljan da bi se mogla izvršiti korektna i racionalna interpretacija rezultata merenja. Iz tog razloga, sadržaj i obim laboratorijskih ispitivanja fizičko – mehaničkih svojstava materijala, dati su u Tabeli 5.2. Postoji više metoda ispitivanja stabilnosti ...
    ... bagera, treba dokazati da bageri sa dužom strelom imaju veću efektivnost, da mogu otkopati blok veće širine, dužine i visine, da imaju manji broj i interval pomeranja transportera, da mogu da ostvare manje nagibe bočnih kosina etaža koji su veoma bitni za njihovu stabilnost, da imaju veće sigurnosno ...
    ... izdvojiti nedostaci koji se ogledaju u činjenicama da manja dužina strele bagera povlači za sobom manju širinu, manju visinu i manji korak napredovanja bagera u bloku, da nije moguć nesmetani pristup dozera u cilju planiranja trase za nastup bagera, da se formiraju veći uglovi nagiba čeonih i bočnih ...

  • Optimizacija faznog razvoja Površinskog kopa Ciganuša – Škorac u cilju definisanja dugoročne dinamike eksploatcije

    Dejan Stevanović, Petar Marković, Mirjana Banković, Milan Živković (2022)
    Definisanje dugoročne dinamike razvoja rudarskih radova koja je u potpunosti usaglašena sa strateškim ciljevima Investitora, veoma je zahtevan zadatak, koji vrlo često podrazumeva veliki broj ograničenja. Adekvatno definisana dinamika razvoja rudarskih radova treba da obezbedi dugoročne zahteve u pogledu kapaciteta, kvaliteta i raspodele resursa neophodnih za ispunjavanje strateških ciljeva, koji se po pravilu svode na ostvarenje maksimalnog profita. Uspešno definisanje dinamike eksploatacije (posebno kod metaličnih ležišta) u najvećoj meri zavisi od optimizacije faznog razvoja površinskog kopa, odnosno od pravilnog ...
    dinamika razvoja, faze razvoja, optimizacija kopa, strateški ciljevi, Whittle

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... diagram for the dynamic Simulation-Fire class model Date services secure data maintenance, data access and modification. In view of the fact that the INVENTS system is based on an integrated database, two classes are defined within the SimVent data service: Baza and BazaSimVent, which represent modules ...
    ... system’s global model data structure, which had to model all relevant parameters of complex mine ventilation networks, the design and realization of database was executed in the MSAccess relational database management system. The system offers safe data archiving for complex data models as this one, ...
    ... used as the strategy for defining the model of processes and data in the development of INVENTS. In this paper UML (Unified Modeling Language), as a standard language for visualization, specification, constructing and documenting of data on software was adopted for the software development analysis ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... diagram for the dynamic Simulation-Fire class model Date services secure data maintenance, data access and modification. In view of the fact that the INVENTS system is based on an integrated database, two classes are defined within the SimVent data service: Baza and BazaSimVent, which represent modules ...
    ... system’s global model data structure, which had to model all relevant parameters of complex mine ventilation networks, the design and realization of database was executed in the MSAccess relational database management system. The system offers safe data archiving for complex data models as this one, ...
    ... used as the strategy for defining the model of processes and data in the development of INVENTS. In this paper UML (Unified Modeling Language), as a standard language for visualization, specification, constructing and documenting of data on software was adopted for the software development analysis ...

  • Replica of the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not?

    Alena Zdravković, Maja Milošević, Ivana Jelić (2021)
    ... information of the number of the replica made, and the type and manner of material that was used for covering. Result and conclusion The data obtained by EDS analysis show that the gypsum model is covered with gold leaf, which was expected according to the macroscopic characteristic of ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Acta Mineralogica-Petrographica, Abstract Series ...

  • Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy

    Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana (2021)
    ... followed with smaller amounts of quartz, feldspar and iron oxy/hydroxides and large calcite grains, which is consistent with the previously reported data (MILOŠEVIĆ et al., 2019). Sample 1 was prepared by the traditional coiling method on a hand rotated wheel, while sample 2 was made with the a ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Acta Mineralogica-Petrographica, Abstract Series ...

  • FTIR Spectroscopic Study Of S-Metolachlor Sorption On Inorganic And Organically Modified Montmorillonite From Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... the organic modification of the montmorillonite with the PTMA complex, stretching vibrations of phenyl ring occur. Analysis of FTIR spectroscopy data showed that the hydrogen bond is one of the most important mechanisms that occur between Na-montmorillonite and S-metolachlor. Comparing the FTIR ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Serbian Society of Soil Science University ...

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... through Myths.............a. • Unit4• HYDROLOGICAL CYCLE AND GROUNDWATER HYDROLOGICAL CYCLE......t tt ttt Vocabulary.......... .. d.. aMaR M . da da a lu l, alakejh Reading Comprehension..........i e GRGUNDWA:TERI .. .MRVNVA . |, . R. . ... JN NEKOJ. .Pt . NNNA MV/oveployuliyoog . 20ooo000u0o ...
    ... 148 • Unit6• GEOPHYSICS, SEISMICITY AND PROSPECTING Partl Seismic waves .......... e 152 Mocabulary.7.09...y. ..0A P J R ). .RkM . R .. RMM . da 155 Reading Comprehension...........te. 157 Part2 SEISMIC MONITORING........ttt tt 158 iWocabulary„...g .. i. -M-fyava. a o e . hi ev 161 Reading ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Odd ViICl | SANSTILS AO 1049 » HOt TON ...

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... geophysical well-logging data from closely spaced boreholes Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analysis and visualization of geophysical well-logging data from closely spaced boreholes ...
    ... Analysis of the standard geophysical logging data provided significant insight into the state of the rock mass under the dam body itself. The purpose of additional data analysis and visualization procedures shown in this paper is the improvement of data presentation, their integration, mutual c ...
    ... especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis and visualization that differs from the standard logging data processing. Numerical interpolation and correlation of data from various logging measurements (short-normal and ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... individuals are determined in open nomenclature or only in generic level. The taxonomic diversity of radiolarian assemblages is low due to selective and poor preservation. Radiola- rian tests are commonly recrystallized. Anyway, ob- tained results allow us to date limestone deposits of Grivska ...
    ... hadrecaena (DE WEVER), Praehexasaturnalis tenuispinosus (DONOFRIO & MosTLER), Žiphothecaellla longa (KozuR & Mock). According to the radiolarian data, the investigated cherts are oflatest Carnian to early Norian age. AncrpakT. TopboTpuHjackH {ropbH KapH – peT) cHBH KpeuMbauH Cca po- *KHaliHMa ...
    ... macrofossils are unknown here. SUDAR [1986, 1996) distinguished Ladinian, Carnian and Norian cherty limestones using conodont dating, but these data were rarely used in geological studies, and the Grivska For- mation was defined and mapped mostly on the base ofits macroscopic lithological ...

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... The schematic diagram of the fuzzy model. Parameters (B and C) are exact data and are measurable, while (A) parameters can be presented according to the experience of employees at the well site and can only be shown by linguistic descriptions. The model must have an analytical part, looking at all input ...
    ... proposition. This is a procedure for representing a statement that includes linguistic variables based on available information about the considered engineering system [17]. A definition of structure and interdependence of linguistic variables is carried out in a coordinate system of membership function ...
    ... for the observed phenomena. Regarding the number of linguistic variables, seven has been found to be the maximal number of rationally recognizable expressions that a human can simultaneously identify [18]. Therefore, the accepted value of linguistic variables for representing M performances is five (Figure ...