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Упит dcterms_subject_txt:multi-criteria decision methods

585 items

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... resulting in poor recall. In methods used for automatically enriching wordnets using other available lexical resources, the successfulness of the method is strongly correlated with the comprehensiveness of the resource used in the alignment process (Hristea, 2007). Different methods and resources can be used ...
    ... related to Slavic languages. Vintar and Fišer (2017) proposed a method to enrich the Slovenian WordNet (sloWNet) with domain-specific single and multi- word expressions. They used a large monolingual Slovene corpus of texts to extract terminology from the domain of informatics, and a parallel En ...
    ... the EWN and BWN projects, as well as some others wordnets, developed independently, have been stalled or frozen. In order to overcome this issue, methods for semi-automatic and automatic development and enhancement of wordnets have been proposed. Even PWN, despite being one of the most comprehensive ...

  • Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara

    Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević (2021)
    U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...
    dozeri, pouzdanost, kolubarski ugljeni basen
    ... exploitation. Efficiency of process on excavation of mineral raw material and overburden largely depends of dozers work. The paper uses mathematical methods for approximation and identification of working times in order to obtain analytical reliability indicators. In this way, the quality management of ...
    ... sistema u okruženju Microsoft Excel, Infoteh–Jahorina Vol. 10, Ref. C-8, p. 273-277, Mart 2011; [8] Ashish S., Muni S. Regression analysis - Theory, Methods, and Applications, Springer-Verlag New York, 1990.; [9] Milčić D. Pouzdanost mašinskih sistema, Univerzitet u Nišu, Mašinski fakultet, 2005. [10] Milčić ...

  • Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater

    Veljko Marinović (2021)
    Modelling of karst hydrogeological systems is a very complicated task, bearing in mind that for a deterministic model one should know the internal physical processes of precipitation transformation into discharge, while for a stochastic model nonlinear dynamic systems such as karst should be simulated by linear regression equations. Stochastic models need linearization of input time series due to often large residual in the recession period. This occur because the model is not able to absorb single rain episodes, which ...
    karstne podzemne vode, stohastičko modeliranje, transfer funkcije, pokretni prosek

  • Classifying large strains from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    ... Our software to compute deformation is freely available and can be used topost-process incremental displacements from PIV or similar autocorrelation methods. Powered by TCPDF (www.tcpdf.org) http://www.tcpdf.org ...

  • The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area

    Vladimir Živanović, Igor Jemcov, Nebojša Atanacković (2022)
    Groundwater vulnerability maps represent an essential tool for protecting karst groundwater resources. Vulnerability assessment is usually based on spatial evaluation of various parameters that affect the vulnerability degree and regulate the protection role of the unsaturated zone. Most of these parameters, like soil and geology conditions, are constant and do not change during the year or over several years. In contrast, some parameters, such as the groundwater level, depend on the variability of recharge conditions. By considering the variability ...
    karst groundwater vulnerability maps, parameter changes, Perućac spring, Serbia

  • Ground surface subsidence monitoring using sentinel-1 in the “Kostolac” open pit coal mine

    Zoran Gojković, Milan Kilibarda, Ljiljana Brajović, Miloš Marjanović, Aleksandar Milutinović, Aleksandar Ganić (2023)
    Open pit coal mining affects surrounding populated areas, resulting in terrain surface deformation. Surface deformation should be monitored as often as possible to control deformations and prevent potential incidents. This paper analyzes time series deformation estimated from the Sentinel-1 satellite images using the Persistent Scatterer Interferometry method to monitor subsidence rates caused by open pit mining activities. It is possible to measure deformations using classical geodetic methods, but those are rarely used in practice because they are time-consuming and ...
    Sentinel-1 InSAR, слегање, рударствo, интерферометрија, даљинска детекција, Костолац

  • Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom

    Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović (2019)
    Izrada nesavršenog ekrana do drugog sloja uglja na površinskom kopu Drmno, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara, predviđena je poslednje decenije u celokupnoj rudarskoj projektnoj dokumentaciji. Iz objektivnih i subjektivnih razloga njegova realizacija nije ostvarena do danas. U međuvremenu je, uz dodatna geološka istraživanja i promenu dinamike i parametara sistema površinske eksploatacije, došlo do određenih značajnih prostornih promena geoloških i rudarskih uslova u eksploatacionom polju. Ovo je omogućilo preliminarno inoviranje pristupa procesu i konceptu ...
    podzemne vode, odvodnjavanje, bunari, ekran, dinamika, troškovi

  • Komparativna analiza završnih kontura površinskog kopa Drmno

    Dejan Stevanović, Dragan Ignjatović, Tomislav Šubaranović, Mirjana Banković, Petar Marković (2022)
    Definisanje optimalne završne konture površinskog kopa od suštinskog je značaja za ostvarivanje strateških ciljeva u razvoju rudarskih projekata. Savremeni programski paketi i metode za optimizaciju granica kopa, zasnivaju se na pronalasku završne konture koja obezbeđuje maksimalan profit. U slučaju površinskih kopova uglja, kod kojih osim profita postoji i čitav niz dodatnih kriterijuma i strateških ciljeva, princip optimizacije granica prema profitu, najčešće nije u potpunosti primenjiv. Iz rog razloga za uspešno definisanje granica površinskih kopova, neophodno je sagledati čitavu lepezu ...
    završna kontura, ugalj, komparativna analiza, optimizacija, strateški ciljevi

  • Determining the Impact of Cutting Elements State on the Bucket–Wheel Excavator Vibration and Energy Consumption

    Filip Miletić, Predrag Jovančić, Miloš Milovančević, Miloš Tanasijević, Stevan Đenadić (2022)
    Background There are two types of specifc sizes’ measurements. The frst is the measurement of energy consumption in a working technological process, and the second is the measurement of vibration, which is displayed over amplitudes of speed. There is an interplay between these two processes. Increasing the power consumption, the value of the vibration speed amplitudes increases. Purpose The process of the determination of machining parameters was based on minimizing the power consumption and vibration of the cutting tool, ...
    merenje, potrošnja energije, vibracije, radni vek reznog elementa

  • Analiza nosivosti vertikalno opterećenog šipa za potrebe izgradnje petlje „Merošina 1“ na autoputu E-80 deonica: Niš – Merošina

    Dragoslav Rakić, Nikola Božović, Miloš Stevanović, Milan Bogdanović (2023)
    U Srbiji je počela izgradnja autoputa E-80 koji će predstavljati saobraćajno čvorište zapadnog Balkana i biće deo glavne regionalne transportne mreže jugoistočne Evrope. Njegova ukupna dužina kroz Srbiju iznosi 77 km, a prva deonica u dužini od 5.5 km je završena i puštena u saobraćaj krajem jula 2023. god. To je prva od četiri deonice Sektora 1 čija je dužina 32.65 km. U sklopu petlje „Merošina 1“ izgrađen je nadvožnjak koji je oslonjen na devet stubnih mesta na međusobnom ...
    petlja Merošina 1, šip, probno opterećenje šipa, projektni pristup, granična stanja

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... by hypogenic conditions. Water 2019, 11, 603 3 of 10 Figure 2. Geological map of the study area. 3. Materials and Methods Research activities and the selection of methods depended on the operating regime of the water-conveyance tunnel. The campaign lasted for 108 days and included the months ...
    ... leakage, and consecutive hydrometric measurements along characteristic sections of the tunnel. Qualitative prospecting was carried out in situ, using a multi parameter probe (for pH, oxidation-reduction potential—ORP, electrical conductivity—EC, dissolved oxygen—O2, and temperature—T), and included all leakage ...
    ... over time). The primary chemical composition of the groundwater (HCO3 −, Cl−, SO4 −, Na+, K+, Ca2+, Mg2+) was determined by standard analytical methods under laboratory conditions. Potentially threatened/critical zones of the tunnel in terms of groundwater aggressiveness and the tunnel’s structural ...

  • Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia

    Maja Milošević, Bojan Kostić (2021)
    ... Измењено: 2023-10-14 04:27:05 Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia Maja Milošević, Bojan Kostić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Single and multi-phase inclusions in garnets from the ...
    ... ere-egu21-2423 EGU General Assembly 2021© Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Single and multi-phase inclusions in garnets from the Lešnicaalluvion in the Internal Dinarides, Serbia Maja Milošević and Bojan Kostić University of Belgrade, Faculty ...
    ... presence of varioustypes of inclusions in their structure. Single and multiphase inclusions in the garnets wereexamined optically by petrographic methods followed by SEM-EDS method, applied for thechemical analyses of the individual inclusion, and LA-ICP-MS applied to determine distribution andcontent ...

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... completely. Due to the rich morphology of Serbian language and the complexity of terms (they are the most often composed of two or more words called multi word units) it is not a simple process. Members of Language Resources and Technologies Society developed semiautomatic approach for term recognition ...
    ... better understanding of the available OER contents. Presented resources are also helpful in a sense of appropriate translation option. Successful methods used in automatic term extraction can be applied to units that belong to the general lexica, as well. The potential expansion of such resources ...
    ... in Proc. Natural language processing for enhancing teaching and learning, 2016, pp. 4170–4176. [4] T. M. Cabré Castellví, Terminology: Theory, Methods, and Applications. Amsterdam: John Benjamins, 1999, pp. 115. [5] I. Obradović, R. Stanković, J. Prodanović and O. Kitanović, “A TEL platform blending ...

  • 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
    ... Processing, Sojka, P. and A. Horák, 65–70. Brno: Masaryk University, 2007 Schmid, Helmut. “Probabilistic Part-of-Speech Tagging Using Decision Trees”. In New Methods In Language Processing, Jones, D. B. and H. Somers, Chapter 12, 154–164. Routledge, 1997 Schmid, Helmut. “Improvements in Part-of-Speech ...
    ... categories are represented as individual categories in the table FormGramCatProperties, as presented on the left side of Figure 1. More details about multi-word units mapping, markers and relations between lexical entries can be found in (Stanković et al., 2018). 3.2 Semantic networks The Serbian wordnet ...
    ... to lemma kap. Although query expansion produces 100% recall, precision is reduced due to homographs. The problems with query expansion in case of multi-word units (MWUs) described in (Утвић et al., 2019) have recently been resolved. Different so- lutions need to be applied for a case where all components ...

  • Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa

    Mirjana V. Banković (2018-07-13)
    Profitabilna eksploatacija sve složenijih ležišta je težak zadatak koji zavisi odtemeljnog procesa analize, planiranja i projektovanja rudnika. Izvodljiv strateškiplan mora da zadovoljava društvena, regulatorna, tehnološka, geometrijska iekonomska ograničenja. Kako bi se postigao osnovni cilj, odnosno profitabilnost iodrživost rudarskog projekta na duži period, neophodno je unapređenjematematičkih modela i informatičke podrške procesima planiranja i optimizacijekoji će omogućiti efikasnu realizaciju ovih ciljeva...
    tehnološki model, integralni model, planiranje, optimizacija,utovarno-transportni sistem, neto sadašnja vrednost projekta
    ... determine maximum fleet size. A case study history of Glamis Gold's Operation. Bazzazi, A. A., Osanloo, M., Karimi, B., 2011, A new fuzzy multi criteria decision making model for open pit mines equipment selection. Asia-Pacific Journal of Operational Research, 28 (03), 279-300. Bell, F. G., Donnelly ...
    ... Geochemical exploration, 52 (1-2), 5-23. 203 Samanta, B., Sarkar, B., Mukherjee, S., 2002, Selection of opencast mining equipment by a multi-criteria decision-making process. Mining Technology, 111 (2), 136-142. Schaffer, M., 1993, Continuous Mining of Strong Rock with the Voest-Alpine Surface Miner ...
    ... institut. Soltanmohammadi, H., Osanloo, M., Sami, A., Malekzadeh, S. B., 2010, Selection of practical bench height in open pit mining using a multi-criteria decision making solution. Journal of Geology and Mining Research, 2 (3), 48-59. Stevanović, D., 2015, Optimizacija i planiranje površinskih kopova ...

  • Hidrogeotermalni resursi teritorije grada Beograda

    Ana Vranješ (2012-12-12)
    Republika Srbija je izrazito bogata hidrogeotermalnim resursima. Podzemne vode satemperaturama preko 20oC (pa do 96oC, Vranjska Banja) relativno su dobro iskorišćene.Nasuprot njima, podzemne vode sa temperaturama do 20oC do sada uglavnom nisu bilepredmet istraživanja sa bilo kog aspekta izuzev za potrebe vodosnabdevanja. Razvojemsistema toplotnih pumpi, mogućnosti višenamenskog korišćenja ovih voda značajno suuvećane.Teritorija Beograda odlikuje se značajnim resursima podzemnih voda, pre svega u okvirualuvijalnih peskovito-šljunkovitih naslaga i neogenih tortonsko-sarmatskih krečnjačkihnaslaga. Temperatura ovih voda ne prelazi 25oC. Njihovim zahvatanjem preko istražnoeksploatacionihbunara ...
    geotermalna energija, hidrogeotermalni resursi, hidrogeotermalni sistemi, hidrogeotermalnapotencijalnost, energetska valorizacija, hidrogeološka rejonizacija, grad Beograd

  • Uticaj klimatskih promena na vodne resurse: primer sliv reke Mlave

    Vesna Ristić Vakanjac, Saša Milanović, Ljiljana Vasić, Boris Vakanjac, Saša Bakrač, Radoje Banković, Veljko Marinović (2023)
    Na teritoriji Jugositočne Evrope, pa samim tim i u delu gde živimo (Republika Srbija i Republika Bosna i Hercegovina) za očekivati je da dođe do značajnijeg porasta temperature vazduha u značajnijoj meri, što će imati značajnijeg uticaja na padavine, njihovu unutargodišnju raspodelu, kao i pojavu sve više prisutnih ekstremnih vrednosti (izuzetno sušnih i kišnih godina). Sve ovo će uticati i na sam režim površinskih i podzemnih voda, resursa bez kojih život na ovoj planeti ne bi ni postojao. Da ...

  • Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji

    Ljiljana R. Kolonja (2016-09-23)
    Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...
    rudarstvo, bezbednost i zdravlje na radu, poslovna inteligencija,tehnička zaštita, ontologije
    ... comprehensive analysis of collected data, the assessment of the performance of applied protection measures, as well as the advancement of the decision‐making process related to the improvement of applied and selection of new measures in the management of occupational safety processes in mines. ...
    ... štampane i elektronske verzije doktorskog rada Prilog 3. Izjava o korišćenju iv SKRAĆENICE BZZR – Bezbednost i zaštita zdravlja na radu DSS ‐ Decision Support Systems ‐ Sistemi za podršku u odlučivanju EEZ ‐ Evropska ekonomska zajednica HOLAP ‐ Hybrid online analytical processing – Hibridna analitička ...
    ... razvoj u ovakvom okruženju. Jedna od oblasti sa značajnim razvojem upravo u pravcu veb rešenja su sistemi za podršku u odlučivanju (eng. DSS – Decision Support Systems), odnosno njen segment analitička obrada podataka (OLAP). Pojava računarstvo u oblaku (engl. Cloud computing) je donela ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. References 1. Strategy Energy Development of the Republic of Serbia until 2015. Available online: http://www.smeits.rs/i ...
    ... type III (depleted in hydrogen), representing the main kerogen type in humic coal [26]. In organic geochemical investigations, different pyrolytic methods are also widely used for estimation of the origin, type/quality, depositional environment, maturity, and hydrocarbon generation potential of sedimentary ...
    ... objective was to examine and confirm the existence of a synergetic effect during low-quality lignite and HDPE co-pyrolysis, using a wide range of methods, and to establish the minimal co-pyrolysis temperature, which is required for a considerable synergetic effect. The manuscript also considers determination ...

  • First paleomagnetic and magnetic anisotropy results from Montenegrо - the coastal area

    Emö Márton, Vesna Cvetkov, Martin Đaković, Vesna Lesić, Slobodan Radusinović (2021)
    ... ones with an electric drill.The laboratory measurements, demagnetizations, statistical evaluations of the measurementswere carried out using standard methods in the Paleomagnetic Laboratory of the Mining andGeological Survey of Hungary. From the Dalmatian zone, the Upper Cretacous limestones have diamagnetic ...