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Упит dcterms_subject_txt:CO2 technologies

236 items

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... Saviors in a Sentiment Annotated Corpus of Comments to Political Debates. In Proceedings of the 49th Annual Meeting of the ACL: Human Language Technologies: short papers – Volume 2. Association for Computational Linguistics, 564–568. [10] Matthieu Constant, Cvetana Krstev, and Duško Vitas. 2015. Hybrid ...

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Analiza rada električnih centrifugalnih pumpi

    Milica Stanojević (2024)
    Ovaj rad analizira rad električne centrifugalne pumpe (ESP) u naftnoj industriji, sa fokusom na problem taloženja kamenca (karbonatnih naslaga) unutar sistema. Električne centrifugalne pumpe (ESP) predstavljaju srce mnogih naftnih bušotina. Njihova visoka pouzdanost i sposobnost rada u zahtevnim uslovima čine ih neophodnim za stabilnu i kontinuiranu proizvodnju.Senzori igraju ključnu ulogu u praćenju rada ESP sistema i detekciji ranih znakova taloženja kamenca. Problem taloženja kamenca je izuzetno značajan, jer može dovesti do smanjenja efikasnosti pumpe, povećanja troškova održavanja, i dugoročnih zastoja ...
    električne centrifugalne pumpe (ESP), formiranje kamenca (karbonatnih naslaga), hemijski inhibitori
    ... grp-enclosures-and-junction- boxes-07-51-ex-e-ii 7. ChampionX , nd. URL: https:/www.championx.com/products-and- solutions/artificial-lift-technologies/electrical-submersible-pumping- systems/esp-surface-controls/ 8. Bafghi, M., Vahedi, A., 2018., „4 Comparison of Electric Motors for Flectrical ...

  • Daljinsko merenje temperature na bušotinskom cevovodu

    Aleksa Petrović (2024)
    Ovaj diplomski rad analizira daljinsko merenje temperature na bušotinskim cevovodima, koje je od velike važnosti za kontrolu i nadzor nad industrijskim procesima posebno u ekstremnim uslovima kao što su visoke temperature i pritisci u bušotinama. Opisane su različite vrste temperaturnih senzora, kao što su termoparovi, bimetalni i otpornički termometri, kao i senzori na bazi optičkih vlakana, koji se primenjuju za kontinualno merenje temperature duž cevovoda u realnom vremenu. Daljinsko merenje temperature omogućava pravovremeno otkrivanje curenja i nepravilnosti, što je ...
    temperatura, daljinsko merenje temperature, bušotinski cevovodi, DTS sistemi, infracrveni senzori, bežične mreže
    ... Temperature Sensors for Oil and Gas Production. . Handbook of Modern Sensors, 2006. Temperature, 3rd Edition. Springer-Verlag New York Keysight Technologies, 2014. How to Select the Correct Temperature Sensor. Transactions In Measurement and Control, 2023. Non-contact temperature measurement. ...

  • Транспортни систем за руду на површинском копу Бувач

    Никола Аџић (2024)
    У општем делу овог рада ће бити наведени утоварно-транспортни системи, њихова подела и основни елементи. У оквиру тога ће бити детаљније објашњени сви појединачни делови ових система као што су багери, камиони, дробилице и транспортери са траком. Даље ће бити наведени програмски пакети који се користе за прорачун ових система Talpac који се користи за прорачун дисконтинуалног транспорта и Helix који се користи за прорачун транспортера са траком. У специјалном делу су наведени параметри које мора да испуни пројектовани ...
    транспортни систем, камион, багер, транспортер са траком, дробилица
    ... 64 0.64 0.64 0.64 0.56 0.42 Designers Gomments E:'\Nastava\Zavrsni radovilNikolaA\T2.xml d Ver 6.0.23.1 Ligenced to University of Belgrade Technologies Ta6ena 7.2.1.6. Iapaempu mpancnopmepa T2 25 Sep 2024 1 Conveyor Idler Details Report Rudarsko-geoloski fakultet Project Zavrsni rad Project ...
    ... Serif:}} \viewkind4\uc1\pard\f0\fs16 \par} E \Nastava\Zavrsni radovi\NikolaA\T2 xmi PA Heli Ver 6.0.23.1 Licenced to University of Belgrade Technologies 90 T2Tensions Running Ful Pulley Hopper Int. Pt Int. Pt Int. Pt Drive Drive Takeup Int. Pt int. Pt Int. Pt Te ns io ns , Station /Pulley ...

  • A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment

    Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)
    Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...
    lexical semantic resources, sense alignment, lexicography, language resource
    ... contributions in Bulgarian were par- tially funded by the Bulgarian National In- terdisciplinary Research e-Infrastructure for Resources and Technologies in favor of the Bulgarian Language and Cultural Heritage, part of the EU infrastructures CLARIN and DARIAH – CLaDA-BG, Grant number DO1- 272/16 ...

  • Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete

    Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)
    sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija
    ... differential thermal analysis. Thermochimicu Acta 1976, 15, 17-B. [CrossRef] 36. Parvan, M.-G.; Voicu, G.; Badanoiu, A.-I.; Nicoara, A.-I.; Vasile, E. CO2 Sequestration in the Production of Portland Cement Mortars with Calcium Carbonate Additions. Nanomaterials 2021, 11, 875. [CrossRef] [PubMed] ...
    ... to analysis, the samples were pre-coated with a several nanometers-thick gold layer, using sputter coater Polaron SC503 Fision Instrument (Quorum Technologies Ltd., Lewes, UK). Simultaneously, non-isothermal thermogravimetric analysis (TGA) and differential thermal analysis (DTA) of the hardened mortar ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima

    Nenad M. Marić (2016-09-26)
    Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...
    podzemne vode, naftni ugljovodonici, kerozin, prirodno prečišćavanje,stimulisana bioremedijacija
    ... respiracija 1 /4 CH2O + 1 /4 O2 1 /4 CO2 + 1 /4 H2O -125 Denitrifikacija 1 /4 CH2O + 1 /5 NO3 - + 1 /5 H + 1 /4 CO2 + 1 /10 N2 + 1 /2 H2O -119 Redukcija mangana 1 /4 CH2O + 1 /2 MnO2 + 1 /2 HCO3 - + 1 /2 H + 1 /4 CO2 + 1 /2 MnCO3 + 3 /4 H2O -98 ...
    ... CH2O + FeOOH + HCO3 - + H + 1 /4 CO2 + FeCO3 + 7 /4 H2O -42 Redukcija sulfata 1 /4 CH2O + 1 /8 SO4 2- + 1 /8 H + 1 /4 CO2 + 1 /8 HS - + 1 /4 H2O -25 Redukcija ugljen dioksida /fermentacija metana 1 /4 CH2O 1 /8 CO2+ 1 /8 CH4 -23 Imajući u vidu energetsku ...
    ... Hemijska i fizičko-hemijska ispitivanja sedimenata iz pijezometra P-1 Uzorak Dubina (m) Sadržaj vlage (%) Pepeo suve mase (%) pH CO2 (%) HES (mg/kg) TPH (mg/kg) 1 1 7,4 6,0 6,82 0,10 1142 500 2 2 4,6 4,5 7,57 0,19 1149 600 3 3 4,8 4,7 7,58 0,13 1110 450 4 4 15,0 ...

  • 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
    ... is the process of defining and analyzing different criteria, considering the general advantages and disadvantages of each method. By developing technologies in the petroleum production, the limits of the applicability of artificial lift methods are constantly moving, which affects the conditions for ...

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus
    ... approach. In Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, June 1ŰJune 6, 2018, New Orleans, Louisiana, Vol. 1, 2018. 47 Michael Wiegand, Melanie Siegel, and Josef Ruppenhofer. Overview of the germeval ...

  • 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

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... tools within the SEA that will achieve the greatest possible objectivity in the assessment of environmental impact (sim- ulation models, GIS technologies, etc.). With regard to subjectivity in decision making based on the results of the SEA pro- cess, it is beyond the reach of experts in this field ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Просторни положај лежишта угља Ђурђевик: геофизичко-геолошки модел

    Синиша Арсеновић (2019)
    Лежиште угља Ђурђевик представља источни део Бановићког угљеног басена и припада северној страни босанске офиолитске зоне унутрашњих Динарида у чији састав улазе стене палеозојске, мезозојске и кенозојске старости. Језерска доњомиоценска угљоносна серија изграђена је од лапоровито-глиновитих седимената са једним слојем мрког угља. Дебљина угљеног слоја креће се у интервалу од 5 до 25 m са генералним правцем пружања СЗ - ЈИ и падом према ЈЗ. У зони обухваћеноj геофизичким истраживањима изражена je пострудна тектоника у виду раседа мањег и ...
    рефлективна сеизмика, 3Д геофизичко-геолошки модел, угаљ, синтетички модел, моделирање
    ... ангажману, као и доц. др Драгани Ђурић на корисним саветима и смерницама током израде дисертације.. Велику захвалност дугујем компанији Tesseral Technologies Inc. која је уступила лиценцу за софтверски пакет неопходан за израду ове докторске дисертације. Такође се захваљујем катедри за геофизику Куртин ...
    ... 1600 2,2 7 Шљунак са прослојцима угља 2500 1000 1,8 Моделирање је вршено у софтверском пакету Тесерал про, канадског произвођача Tesseral Technologies Inc. Најпре је сачињен модел који је геометријом и карактеристикама одговарао геолошком профилу описаном у поглављу 2 и приказаном на слици ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... Serbia has been growing rapidly in the last decades, it was not accompanied by an adequate development and implementation of modern information technologies. Until recently, management of this growing body of geological documentation relied on traditional methods based on libraries and archives, which ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... and Risk Mapping in Croatia.– Geologia Croatica, 51/2, 195–204. MIHALIĆ ARBANAS, S., KRKAČ, M. & BERNAT, S. (2016): Application of in- novative technologies in landslide research in the area of the City of Zagreb (Cro- atia, Europe).– Geologia Croatica, 69/2, 231–243. doi:10.4154/gc.2016.18 NARANJO ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • 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
    ... l safety, such as accidents, injuries at work and occupational diseases should enable, with the application of modern information technologies, a complex and comprehensive analysis of collected data, the assessment of the performance of applied protection measures, as well as the ...
    ... updating of data. The business intelligence model for occupational safety in mines integrates standard OLAP (Online Analytical Processing) technologies that are used for the organisation of large business databases and for the support to business intelligence with the RudOnto ontology. ...

  • 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
    ... povećava se i dužina bloka (Slika 2.3.). Takođe, sa povećanjem zapremine bloka povećava se i efikasnost bagera. ThyssenKrupp Resource Technologies Excellence in Technology Razvoj rudarskih masina u pogledu selektivnog rudarstva 02.-05. Oktobar ZLATIBOR 2013, Veljkovic 19 Duzina strele radnog ...
    ... (A) i (B), dok je kod bagera tipa (C) uočena kao nedostatak relativno kratka dužina strele bagera (Slika 2.5.). ThyssenKrupp Resource Technologies Excellence in Technology Razvoj rudarskih masina u pogledu selektivnog rudarstva 02.-05. Oktobar ZLATIBOR 2013, Veljkovic 12 SchRs 630 A = 22 ...
    ... a „Sirina bloka u funkciji ugla zaokretanja strele radnog tocka“ Fol. 10 Slika 2.4. – Određivanje širine bloka ThyssenKrupp Resource Technologies Excellence in Technology Razvoj rudarskih masina u pogledu selektivnog rudarstva 02.-05. Oktobar ZLATIBOR 2013, Veljkovic 21 SchRs 1600 SchRs ...