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Упит dcterms_subject_txt:CO2 technologies

242 items

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... and Ghahreman, A., 2021. Recovery of rare earth and some other potential elements from coal fly ash for sustainable future. In Cleanm Coal Technologies: Beneficiation, Utilization, Transport Phenomena and Prospective. Cham: Springer International Publishing, p. 339-380. [15] Ramirez-Caro, D ...
    ... Tulane University School of Science and Engineering). [66] Balaram, V., 2022. Sources and applications of rare earth elements. Environmental Technologies to Treat Rare Earth Elements Pollution: Principles and Engineering; IWA Publishing: London, UK, p.75-113. [67] Chakhmouradian, A.R. and Wall ...
    ... , Ahn, J.W., Parhi, P.K., Chung, K.W. and Lee, J.Y., 2020. Review of rare earth elements recovery from secondary resources for clean energy technologies: Grand opportunities to create wealth from waste. Jouwmal of Cleaner Production, 267, p.122048. [143] Chen, Y., Liu, W., Feng, J., Guo, R., ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... constant increase of geological data and information in Serbia was not accompanied by adequate development and introduction of modern informa- tion technologies until recently. Thus the management of the various geologi- cal documentation has been organized on the principle of traditional libraries and archives ...

  • Automatic construction of a morphological dictionary of multi-word units

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić (2010)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion
    ... Belgrade (2008) 3. Savary, A.: Computational Inflection of Multi-Word Units - A Contrastive Study of Lexical Approaches. Linguistic Issues in Language Technologies 1 (2008) 4. Krstev, C., Vitas, D.: Finite State Transducers for Recognition and Generation of Compound Words. In Erjavec, T., Žganec Gros, J. ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... En- tities. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Langua- ge Technologies, volume 1, pages 2138–2144. Niels Dekker, Tobias Kuhn, and Marieke van Erp. 2019. Evaluating Named Entity Recognition To- ols for Extracting Social ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... Sameer Singh, Dustin Hillard, and Chris Leggetter. 2010. Minimally-supervised Extraction of Enti- ties from Text Advertisements. In Human Lan- guage Technologies: The 2010 Annual Conference of the North American Chapter of the Associa- tion for Computational Linguistics. Association for Computational Linguistics ...

  • Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

    Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)
    To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...
    Perovskite/spinel ceramics, Multiferroic, Sintering, Influence of synthesis method

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... 1016/|.jclepro.2018.07.032. 3| Ritchic, H., Roser, M., Rosado, P. CO: and Greenhouse Gas Emissions, Our World Data, 2020. https://ourworldindata.org/co2-and-greenhouse-gas- emissions [pristupljeno 09.02.2023| 4] Schulz,C.IPCC Report 2022, AR6: Summary Part 1. https://www.fortomorrow.cu/en/post/ipcc2022- ...
    ... Climate Change, Paris, 12 December 2015. https://unfccc.int/sites/default/files/english_paris_agreement.pdf [pristupljeno 10.02.2023| 7] Fossil CO2 emissions by country. https://edgar.jrc.ec.europa.cu/report_2022?vis=pop#emissions_table [pristupljeno 10.02.2023| S] Compendium of greenhouse gas ...
    ... instead of average emission factors. Country-specific factors can vary e> energija, ekonomija, ekologija, 2023, god. XXV, br. 1 betwecen fucis, technologies, individual plants, etc. The use of country-specific cmission factors derived from #detailed information is cxpccted to reduce thc uncertaintics ...

  • 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
    ... molecules and KOH reduction to metal K. At the same time, K2CO3 which may also be formed during the activation, may be reduced by carbon to K, K2O, CO, and CO2 what also, as a consequence, may have creating porous Minerals 2018, 8, 246 10 of 21 carbon surface. An additional reason for microstructure destroying ...
    ... carbon; hydrothermal treatment; hydroxide activation; heavy metals; methylene blue 1. Introduction The increasing human need for new products and technologies has led to intensive development of industry. On the other side, industrial development is usually followed by high levels of potentially hazardous ...
    ... carbon; hydrothermal treatment; hydroxide activation; heavy metals; methylene blue 1. Introduction The increasing human need for new products and technologies has led to intensive development of industry. On the other side, industrial development is usually followed by high levels of potentially hazardous ...

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... analizu uticaja materija koje formiraju penu penušavci i materija koje utiču nanjenu stabilnost nezavisno od sadržaja CO2. U tu svrhu, visina pene i struktura pene piva mereni su tako što je CO2 uklonjen pre merenja. Analiza je pokazala da ponašanje pene uzoraka piva koje je standardizovano za merenje u velikoj ...
    ... proizvodnje. Razlog za to leži u razlikama u sadržaju ugljen- dioksida (CO2) koji nastaje tokom procesa vrenja i koji zajedno sa proteinima učestvuje u stvaranju pene.Stabilnost pene ne zavisi samo od sadrz aja proteina, vec i od uticaja CO2. Da bi se mogao analizirati uticaj supstanci koje formiraju penu ...
    ... treba ukloniti CO2 iz uzoraka. To osigurava da su razlike u penivosti i stabilnosti pene kod razlic itih vrsta piva povezane samo sa sastavom tec nosti. Pomoc u savremenog uređaja Dynamic Foam Analyzer - DFA100 može se analizirati uticaj surfaktanata u pivu nezavisno od sadržaja CO2 i njegovog uticaja ...

  • 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
    ... corpora are developed within research activities of Human Language Technology (HLT) Group at the University of Belgrade and the Language Resources and Technologies Society (JeRTeh): – monolingual general corpora: Corpus of Contemporary Serbian (versions SrpKor2003 and SrpKor2013)1 and its subset SrpLemKor2; ...

  • Глаголи у кухињи и за столом

    Цветана Крстев, Биљана Лазић (2015)
    У раду је приказано истраживање лексике на српском језику кулинарског домена које се заснива на коришћењу доменског корпуса, електронских лексичких ресурса, пре свега WordNet-а и морфолошких речника, и локалних граматика. Приказане су доменске специфичности ових ресурса, како се користе, и међусобно употпуњују. Посебно је приказано како се коришћењем доменског корпуса могу екстраховати глаголи специфични за кулинарски домен и описати начини њиховог коришћења. Дат је попис глагола са основним подацима који је добијен применом представљених метода.
    аутоматска обрада, коначни трансдуктори, електронски речници, семантичке мреже, локалне граматике, кулинарство
    ... Vujičić Stanković, Duško Vitas, “Approximate Measures in the Culinary Domain: Ontology and Lexical Resources”, in Proceedings of the 9th Language Technologies Conference IS-LT 2014, Ljubljana, Slovenia, 9-10 October, 2014, eds. Tomaž Erjavec and Jerneja Žganec Gros, pp. 38-43, Institut "Jožef Stefan" ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... texts that contain domain terminology. As in the example with a “debugger”, the transcribed version is adopted for everyday use in Information Technologies domain. It is a challenge to produce and maintain up-to-date terminology re- sources, especially for an under-resourced language, such as Serbian ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... regarding environmental protection, mining and energy complexes management representatives actually begin preparations for implementing up-to-date technologies and harmonization of domestic laws and technical regulations with international ones. Creating conditions for compliance with international legal ...
    ... Energies 2016, 9, 1071 19 of 20 Acknowledgments: The presented research is a part of the projects “Development of new information and communication technologies, based on advances mathematical methods, with applications in medicine, telecommunications, power systems, protection of natural heritage and education” ...

  • Верификација етажних транспортера на угљеном систему – површински коп Дрмно

    Тамара Андрејевић (2024)
    У савременом рударству, површински копови угља наилазе на различите проблеме које треба превазићи зарад добијања потребне количине угља. Као највећи потрошачи овог енергента јављају се термоелектране, где на основу овога можемо да закључимо колико су блиско повезани добра и континуирана производња на површинском копу и рад термоелектрана. Са циљем да се обезбеди стабилна и континуирана производња, потребно је да се направи добар одабир транспортера. У овом раду, за потребе верификације затезне чврстоће траке и снаге погона транспортера, коришћен је ...
    транспортна трака, снага погона, затезна чврстоћа, угаљ, Дрмно, Helix
    ... 1\pard\0\fs16 \par} E-\NastavaiZavrsni radov\Tamara Ancrejovic\Proracun HolodU 1 1>mi rN Helix Ver60231 Licenced to University of Belgrade: Technologies. Cauka 37. T enepannu u3geuumaj o mpaHcnopmepy 57 20 Mar 2024 13:53 Belt Details Report Page 1/1 Rudarsko-geoloski fakultet Project Zavrsni ...
    ... {{\f0\fswiss MS Sans Serif;)} \viewkind4\uci\pardVO\fs16 \par} E-\NastavaVČavrsni radov\\lamara Andrejevic\Proracun Helix\U--1,xmi j Heli Technologies Cauka 39. Haeeumaj o onmepehern»y npu nokpematby u kKpemarby mpanHchopmepa IIpopauyH KojuH je moOujeH y Helix-y cyMHpaH je Ha CPpHCKOM Je3HKy ...

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... 2008. [5] A. Savary, “Computational Inflection of Multi-Word Units — A Con- trastive Study of Lexical Approaches,” Linguistic Issues in Language Technologies, vol. 1, no. 2, 2008. [6] C. Krstev and D. Vitas, “Finite State Transducers for Recognition and Generation of Compound Words,” in IS-LTC 2006, ...