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Упит dcterms_subject_txt:fluid production

367 items

  • 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
    ... compound noun and human entity. According to data from 2014, Serbian morphological dictionary of simple words consists of 133,361 lemmas. Their production is 4,581,657word forms. The number of units covered by Serbian morphological dictionary of compounds is 13,717, or 262,686 word forms [7]. RudOnto ...
    ... g. law, biomedicine, mythology, culinary etc.). 5. TERMINOLOGY EXTRACTION Bearing in mind rapid changes in scientific domains and new terms production, automatic terminology recognition and extraction has become an important task. The extracted terms are then included in ontologies. Even though ...

  • Indeksi kontrole održavanja i korišćenja rotornog bagera

    Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić (2023)
    Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...
    rudarstvo, rotorni bager, indeksi održavanja, indeksi korišćenja, TOPSIS

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... the optimal mining; technology. The entire proce- dure constitutes an integrated mine management system, which will contribute to sustainable production in the future. A case study to which the model was applied is presented in the paper. Key words: mining; technology, expert evaluation, triangular ...
    ... , decision making, Introduction. Mine management optimization, and thus the importance of mining. activity planning, stem from the fact that production costs are measured * Corresponding, author. DOT:10.7546/ CRABS.2023.09.12 1413 in enormous amounts of money. This industry hires a large ...

  • Conversion of land areas after coal mine closure and reclamation

    Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić (2023)
    Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.
    rekultivacija, melioracija, revitalizacija, otkopavanje uglja, održivi razvoj
    ... Europe like the Czech Republic, Poland, Croatia, Slovenia, Serbia, Romania, Bulgaria or Greece still depend on their economic development from coal production. 4. PLANNING OF RECULTIVATION 'The reclamation planning process is crucial for the overall effectiveness and efficiency of the implementation ...
    ... Mining operations expand progressively during the operation lifecycle of the coal mine and portions of the site can be used for renewable power production. The application of solar PV systems provides an opportunity for an alternative revenue source. Equally important is that obtaining licenses to ...

  • Savremene tendencije upravljanja mineralnim resursima u svetu i stanje u Republici Srbiji

    Dragan Ignjatović, Vladimir Pavlović (2024)
    Strategija upravljanja mineralnim i drugim geološkim resursima na održivim i holističkim osnovama, služi kao osnova za vladinu politiku vezanu za geološka istraživanja i eksploataciju mineralnih resursa u skladu sa njenim pravnim i regulativnim obavezama. Uspostavljanje Strategije obezbeđuje osnovu za dalji razvoj i ona se realizuje u relevantnim oblastima politike kako bi se postigli postavljeni ciljevi, pri čemu se resursi moraju dobijati i koristiti na održiv način. Strategija treba transparentno da istakne mogućnosti i izazove, stvori preduslove, razjasni uloge i ...
    strategija upravljanja, mineralni resursi, rezerve, rudarstvo, geologija.
    ... updating the Strategy in accordance with changing circumstances. The paper presents the role and importance of mineral raw materials, trends in production and consumption, modern tendencies in mineral resource management, and the situation in Serbia. Keywords: management strategy, mineral resources ...

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... duhan indi- cated by the marker +VAR=VH assigned to a lemma duvan ‘tobacco’ exist?). Finally, the lack of all these features was an impediment to production of special purpose dictionar- ies: for instance, for purely morphological dictionaries, at- las should be one lemma, while for dictionaries aiming ...
    ... class LexicalEntry is used for canonical forms of different variants, and the class LexicalRelation for relations between variants. Dictionary production in different formats is also envis- aged. For instance, compiled dictionaries to be used by Unitex, or textual inflected files to be further utilized ...
    ... dictionary are generally mapped to entries in LexicalEntry and LexicalSense (Fig- ure 2), where a lemma, its POS, the inflectional class (governing production of all inflected forms) are stored in the LexicalEntry table, while associated markers – syntactic, semantic, domain and other – can be sep- arated ...

  • Development of terminological resources for expert knowledge: a case study in mining

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić (2015)

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... Cap areas (Canari)), which have been largely exploited during the 20th century for applications in the building and insulation industries. The production of this asbestos-based pottery continued up to the middle of the 20th century. Istria [7] identified at least 15 familial workshops active around ...
    ... Indeed, both the porosity and the fiber reinforcement improve the mechanical toughness of the artefact. According to ethnographic records, the production was conducted mainly by women potters in villages, and the firing took place in bread ovens or in simple pits [7]. Historical records indicate ...
    ... in asbestos (50% to 90% volume) have been made in Finland and North Scandinavia from ca. 3900 BC to 200 AD and 1500 AD, respectively, for metal production (crucibles and molds). It is also reported that asbestos fibers were added to plaster during, the Middle Ages or before in Cyprus [10]. We present ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... (n) dаtih u Таbеli 1. Indеks toka prеdstаvlја nivо оdstupаnjа оd Njutnovskog pоnаšаnjа. Zа Njutnovski fluid, indеks toka је јеdnаk 1, vеći оd 1 zа dilatantne i mаnji оd 1 zа psеudоplаstične fluide [16]. Vrеdnоsti indеksа toka kultivacionih tečnosti аnаlizirаnih u оvоm istrаživаnju bilе su u intеrvаlu ...
    ... Veličković, A.V., Veljković, V.B. (2011). The production of biodiesel from vegetable oils by ethanolysis: Current state and perspectives. Fuel, 90(11), 3141-3155. [2] Li, Q., Xu, J., Du, W., Li, Y., Liu, D. (2013). Ethanol as the acyl acceptor for biodiesel production. Renewable and Sustainable Energy Reviews ...
    ... solvents – Versatile chemicals in biodiesel production. Fuel, 295, 120604. [11] Manurung, R., Ramadhani, D.A., Maisarah, S. (2017). One step transesterification process of sludge palm oil (SPO) by using deep eutectic solvent (DES) in biodiesel production. AIP Conference Proceedings, 1855, 070004 ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... various information assigned to DELAS entries. The application used several Unitex modules that enable the production of DELAF forms for each selected DE- LAS form (for paradigm checking) or the production of a complete DELAF dictionary from a chosen DELAS file. Opportunities for working with dictio- naries ...
    ... inflection paradigm “N2”, and an op- tional list of semantic markers for the human being “+Hum” and the profession “+Prof”. DELAF dictionary used for its production consists of automatically generated entries representing all inflectional forms of a DELAS dictionary. It consists of a word form, its lemma, word ...

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... southeast of Serbia, near the town Vranje (Figure 1). In the Grot mine, the exploitation and processing (flotation) of lead-zinc ore is carried out. Production of ore in the Grot mine is about 14,000 tons of ore monthly, and about 800 tons of lead and zinc concentrate are obtained per month in the flotation ...
    ... and mode of waste recovery from the pollutants [18,20]. In recent years, a lot of studies have been performed with aim of the selection and/or production of low-cost adsorbents with good adsorption capacities for both organic and inorganic pollutants such as methylene blue or heavy metals. For example ...
    ... and Sargassum [27]. Besides mentioned adsorbents, activated carbons (ACs) are very beneficial materials for different uses such as power transfer, production wearable sensing and sensor application nanofibers [28–35]. In addition, their use is particularly significant in inorganic or organic pollutants ...

  • An Approach to Development of Bilingual Lexical Resources

    Stanković Ranka, Obradović Ivan, Trtovac Aleksandra (2012)
    ... Multilingual Textual Repositories: Developing Language Resources and Algorithms. In: Proceedings of the Second International Conference on Automated Production of Cross Media Content for Multi-Channel Distribution (AXMEDIS '06), (Leeds, UK, December 13-15, 2006), pp. 173-180. [6] Piperidis, S. 2012 ...
    ... Language Resources and Evaluation (LREC), (Istanbul, Turkey, May 23-25, 2012). [7] Stanković, R., Obradović, I., Krstev, C., Vitas, D. 2011. Production of Morphological Dictionaries of Multi-Word Units Using a Multipurpose Tool. In: Proceedings of the Computational Linguistics-Applications ...

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we ...

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • 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)
    ... Pottery manufacture with these specific raw materials and the final function of the product is closely connected, when material dictates technique. Production of pottery and the manufacturing process is yet to be closely investigated. References Djordjević, B. 2021. Ražanjsko crepuljarstvo. Izrada ...

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... show the advantage of modern systems on the example of large - scale production, the importance of the preparation of production for the total time and production costs. Keywords: Optimization, CNC, milling machine, production preparation, costs. UVOD U doba modernih informacionih tehnologija ...
    ... avoid destabilization of the production process, reduction of productivity and the cost of additional testing of materials. Attention was paid to the conceptual definition of research problem and critical factors as potential causes of problems in pre-production and production activities. The principles ...
    ... modern era, which are reflected in the quality, time domain and complexity of the production process. The implementation of modern CNC systems seeks to optimize the production process, mainly in the domain of production time with indirect factors that affect the optimization from several aspects. The ...

  • Preparation of Multimedia Document “YU Rock Scene”

    Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić (2017)
    SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...
    multimedia document, library science, information science, rock and roll, music, Yugoslavia
    ... and American trends. Gramophone record stores were becoming more and more prevalent, and in particular places music could be listened on jukeboxes. Production of Coca-Cola began in this period in these territories, dressing style was being adapted to the trends in the West, and the emergence of jeans caused ...
    ... generation. Number of rock groups and solo performers was increasing, and the 1970s are considered the most fruitful years, since they brought mass production and great popularity to the rock scene. Bands that were established in the beginning of the 1970s were greatly influenced by the hippy movement, ...
    ... Labels First record labels in Yugoslavia emerged after World War II. Jugoton was the first record label in Yugoslavia and it was established in 1947. Production of gramo- phone records began in 1956 in Yugoslavia. PGP RTB record label was established in Belgrade in 1951. The most important albums issued ...