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Упит dcterms_subject_txt:linguistic linked open data

1349 items

  • Efficiency and lifetime of medium voltage transformers

    Snežana Aleksandrović, Vesna Damnjanović (2017)
    ... Prikazani su uporedni dijagrami i to za transformatore sledećih snaga: 50 kVA, 100 kVA, 160 kVA, 250 kVA i 400 kVA. Troškovi su dati u relativnom odnosu, s obzirom da njihov iznos zavisi od trenutka u kome sc vrši promenjivu vremensku dimenziju. analiza ı ima Re la ti vn i tr oš ko vi ...
    ... vesna.damnjanovic(q)rgf.bg.ac.rs SadržajJj—Da bi se ostvarilo maksimalno iskorišćenje rudarske opreme i tehnologije na površinskim kopovima neophodno je obezbediti trajnu i kvalitetnu električnu energiju. Sa druge strane, privredni uslovi zahtevaju da se električna mreža izvede sa što manjim ...
    ... površinskim kopovima, uz određene specifične uslove koje određuje usvojena tehnologija na radilištima, treba da ostvari pouzdano i ncprekidno napajanje električnom energijom, mora da ispuni zahteve ckonomičnosti, omogući što jednostavniju cksploataciju i ostvari potpunu sigurnost u opsluživanju ...

  • The Rift Sequence Stratigraphy of the Itebej Field (Pannonian Basin, Serbia)

    Saša Ivanišević, Jelena Radišić, Ivana Isić, Dejan Radivojević (2019)

  • Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending
    ... directly applicable to coal quality control. Data acquisition and interpretation should be on real time bases in order to influence mining operations. The ability to fully exploit on-line information and rapidly feed it back in- to geological model will open up new possibility for improved decision making ...
    ... real historical data demonstrates the efficiency of the methodology proposed. Table 1. Reduction in CV variability for different scenarios Standard deviation of CV [kJkg–1] Actual data set Simulated data GA-LP Stockyard data Reduction of variability [%] Input – real data 497 – – – ...
    ... during three months’ period in 2016. The real value 2-D coal model of verified deposit data-set is used as the ground truth to assess the optimization method for building the simulation experiments. The original da- taset contains 100 mining blocks which are divided into four mining strips. Each excavating ...

  • Vebran Web Services for Corpus Query Expansion

    Ranka Stanković, Miloš Utvić (2020)
    U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.
    corpus search, web service, Serbian lexical resources, query expansion

  • Estimating hydraulic parameters for the complex hydrodynamic models

    Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...
    kalibracija, optimizacija, PEST, koeficijent filtracije

  • Joint interpretation of paleomagnetic, structural and AMS results from the Vardar Zone of Serbia

    Emo Marton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2021)
    ... this activity are widespread in the Eastern well as in the Western Vardar Zone, while in the Sava Zone they are known from a restricted area. To date, we carried out paleomagnetic and AMS studies on oriented rock samples which were drilled at 39 plus nine localities /sites from the Western and from ...
    ... compression have secondary magnetizations, which are definitely not connected to the Oligocene-Lower Miocene magmatic activity. They are difficult to date, could have 18th Meeting of the Central European Tectonic Studies Groups & 25th Meeting of the Czech Tectonic Studies Group: Book of Abstracts; ...
    ... ofthis activity are widespread in the Eastern well as in thc Western Vardar Zone, while in the Sava Zone they are known from restricted area. To date, we carried out paleomagnetic and AMSstudies on oricnted rock samples which were drilled at 39 plus nine localities /sites from the Western and from ...

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)
    geochronology, zircon, provenance
    ... units in the Balkans, but are absent on the Europcan side. Qur zircon provenance data from Upper Cretaceous sediments in the Sava-Vardar Zone offer new insights into the closure of the Tethys in the Balkans. Our data from Upper Cretaceous formations in the Sava-Vardar suture zone demonstrate thc ...
    ... 2024-10-09 07:30:15 Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković Дигитални репозиторијум Рударско-геолошког факултета Универзитета ...
    ... Београду [ДР РГФ] Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data | Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković | Fifth Congress of Geologists of the Republic of North Macedonia ...

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • Development Of The Serbian Geological Resources Portal

    Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić (2011)

  • Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić, (2019)
    ... Introduction Lateral density variations in the sedimentary basin basement can be calculated using gravity anomaly, depth-to- basement data and density data for the sediments (density-depth distribution, usually). Gravity effect of density variations in the basement is extracted from the total ...
    ... kg/m3 from the data. Average density of the basement is set to be 2.68·103 kg/m3 (density contrast of 0.38·103 kg/m3). Gravity effect of the Cenozoic sediments and homogenous basement was calculated using 2D modeling and then removed from the total gravity anomaly. Depth-to-basement data (Pigott and ...
    ... vertical density distribution in sediments, as well as depth-to- basement data. The result is presented as a curve of lateral density variations within the basement that can be used for further modeling. All available basement data can be used in order to compile more complex density distribution models ...

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer
    ... ility and functionality input data. Input data will be introduced to model simultaneously based on experts’ opinions and based on statistical data. Therefore, two different effectiveness evaluations can be expected. 3.1 Model for Proposition The defining of linguistic variables for E, R, M and F is ...
    ... at the specific open pit mine. This was done by filling in questionnaires for each machine (Tab. 1-3) (Djuric, 2016). Questionnaires had multiple choices for evaluation (linguistic variables) of each indicator R, M and F. Analysts could evaluate affiliation to the specific linguistic variable with 100 ...
    ... of mass point calculation - Z (Ying, 2009), it is possible to obtain useful data for a precise comparative analysis: where: - β is explained in equations (19), (20), (26) and (27) - C is numerical equivalent for linguistic variables (poor = 1, adequate = 2 ...). For other machines, values Z is presented ...

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • GIS Application Improvement with Multilingual Lexical and Terminological Resources

    Ranka Stanković, Ivan Obradović, Olivera Kitanović (2010)

  • Reconstruction of the Tethys’ Waning in the Balkans

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)

  • Optimizacija površinskog kopa Ciganuša – Škorac

    Vasilije Zejak (2024)
    U radu se govori o značaju optimizacije u savremenom rudarstvu i kako nam to softveri štede vreme, novac i olakšavaju procese planiranja.Konkretno u izradi ovog rada korišćen je softverski paket Whittle.Da bi se optimizacije mogla uspešno sprovesti, potrebno je konstruisati pre svega blok model ležišta kao i definisati niz tehno – ekonomskih parametara. Na osnovu tih podataka definiše se optimalna kontura i dinamika razvoja radova. U skladu sa definisanim podaci i odgovarajućim podlogama definisana je optimalna kontura površinskog kopa Ciganuša ...
    optimizacija, površinski kop Ciganuša - Škorac, blok model, strateško planiranje, optimalna kontura, dinamika razvoja, fazni razvoj
    ... konturu koja će dati maksimalan NPV. Metode je pogodna za rad jer eliminiše greške u proceni prilikom ručnog definisanja optimalne konture na svakom preseku, a i pogodna Je za programiranje i primenu u softverima. Međutim ima i dva velika ograničenja. Prvo ograničenje Je da može da radi sa kosinama ...
    ... izradu ovog master rada, dat Je poseban osvrt na optimizacioni pristup inkorporiran u ovaj programski paket. 48 Optimizacija površinskog kopa Ciganuša – Škorac Whittle postupak se zasniva na brzoj implementaciji uzastopnih primena algoritma Lerchsa-Grossmanna. Za dati set ulaznih parametara ...
    ... Korekcija optimalne konture praktično se izvodi iscrtavanjem krivih linija (etaža) na osnovu naznaka datih u optimalnoj konturi, odnosno preko formirane blokovske strukture (slika 3.26). Preporučljivo je da generišu konturne linije na polovini visine etaže (srednje linije etažnih kosina), jer se tako ...