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Упит dcterms_creator_txt:Griffin William L.

707 items

  • 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

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... treated water is higher than 11 °C, so it is adopted to be a minimal available temperature of the heat source. For calculations, the flow rate of 286 l/s of discharged water is adopted. Based on assumptions of the temperature difference in the heat exchanger of 4 K and the value of the coefficient ...
    ... bal lessons from viable decarbonizing of district heating in Finland. Energy 166:862– 870. https:// doi. org/ 10. 1016/j. energy. 2018. 10. 077 Lo L-H (2011) Diversity, security, and adaptability in energy sys- tems: a comparative analysis of four countries in Asia. World Renew Energy Congr Swed ...

  • Geološko-geofizički model dela Timočkog magmatskog kompleksa

    Snežana M. Ignjatović (2014-06-30)
    Timočki magmatski kompleks (TMK) u geotektonskom smislu pripada KarpatoBalkanidimaistočne Srbije, koji su deo Tekijsko-Dakijske jedinice. TMK je nastaotokom kontinuirane vulkanske aktivnosti, koja je trajala oko deset miliona godina iodvijala se generalno u tri faze (Zimmerman et al., 2008, Kolb et al., 2013, Banješević,2006). Pomeranje vulkanskog fronta je išlo od istoka ka zapadu (von Quadt et al., 2002,2003, 2007). Ovaj kompleks pripada tetijskom evroazijskom metalogenetskom pojasu usvetu poznat po ležištima bakra i zlata (Janković, 1990).U doktorskoj disertaciji su prikazani rezultati ...
    Timočki magmatski kompleks, aeromagnetska istraživanja, gravimetrijskaistraživanja, 2D geološko-geofizički model, Valja Strž, magmatsko telo
    ... stvaranja terena. Podaci o geološkoj graĎi istraţnog područja dobijeni su prema podacima OGK 1:100000 i tumačima listova Ţagubica L 34-140 (Antonijević i dr., 1963) i Bor L 34-141 (Antonijević i dr., 1976), kao i na osnovu dosadašnjih geoloških istraţivanja, koja se na istraţnom prostoru obavlja već ...
    ... V., Naudy, H., 1964. Numerical calculation of the formula of reduction to the magnetic pole. Geophysics, Vol. XXIX, No. 1, 67-79. Bastani M, Kero L., 2004. Test of the analytical signal technique and Euler deconvolution on Forsmark data, Swedish Nuclear Fuel and Waste Management Co, Stockholm ...
    ... Meeting of the Association of European Geological Societies, Belgrade, 139-142. Ignjatović, S., Ivanović, N., Vasiljević, I., Vasiljević, I., Kričak, L., 2013. The application of mathematical transformation on aeromagnetic data in order to detect magnetic anomaly sources. 45th IOC, Bor, 256-260. ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... outlined in this paper was supported by the Serbian Ministry of Education and Science grant # TR 33039. REFERENCES [1] Daconta, M. C., Obrst, L. J., Smith, K.T.: The Semantic Web: A guide to the Future of XML, Web Services, and Knowledge Management. Indianapolis, Indiana: Wiley Publishing, Inc ...

  • 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
    ... project (ICT PSP programme, no. 271022) and by Serbian Ministry of Education and Science under the grant #III 47003. References Gravano, L. Nezinger, M.H. (2006). Systems and Methods for Using Anchor Text as Parallel Corpora for Cross-Language Information Retrieval - US Patent 7,146 ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... (Urquhart, 1988). In the fi rst step, the data was fi ltered along the direction of the acquisition, and in the second step, the fi ltered data was fi l- tered again, perpendicular to the direction of the acquisitions (Figure 4.). Figure 4 What is important to note is that for the fi lter to be relevant ...

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... pozitivno delovalo na dužinu trajanja pojedinačnih optimizacija (brži računar - kraće trajanje optimizacije). Rezultati analize prikazani su u Tabeli l i na dijagramu datom na Slici 6. Iz tabele 1 kao i dijagramu (slika 6) se može videti nesrazmeran porast vremena trajanja optimizacije sa povećanjem ...

  • 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 ...
    ... Improving Document Retrieval in Large Domain Specific Textual Databases 11 with normalized tf factor for the query term weights, lnc ltc measure where l stands for weights with a logarithmic tf component, lnu ltu where normaliza- tion is based on the number of unique words in text, as well as several measures ...
    ... (2011) 25. Utvić, M.: Annotating the corpus of contemporary Serbian. INFOtheca - J. Inform. Librariansh. 12(2), 36a–47a (2011) 26. Vitas, D., Popović, L., Krstev, C., Obradović, I., Pavlović-Lažetić, G., Stanojević, M.: Srpski jezik u digitalnom dobu - The Serbian Language in the Digital Age. In: ...

  • Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova

    Daniel P. Kržanović (2016-06-14)
    Optimizacija graničnog sadržaja metala u rudi jedan je od osnovnih koraka u planiranju i dizajniranju površinskih kopova i ima za cilj postizanje maksimalne neto sadašnje vrednosti (NPV). Iz tog razloga, optimizacija graničnog sadržaja i danas je predmet mnogih istraživanja u rudarskoj nauci, sa ciljem rešavanja praktičnih problema u eksploataciji ležišta.Dugoročno planiranje eksploatacije na površinskim kopovima podrazumeva sagledavanje svih relevantih parametara i faktora (geologije rudnog ležišta, tehnologije proizvodnog procesa, kapaciteta otkopavanja i prerade, troškova, cena metala, iskorišćenja i dr) kako ...
    površinski kop, dugoročno planiranje, optimizacija graničnog sadržaja, maksimizacija neto sadašnje vrednosti (NPV).
    ... sadržaj u k*, g1(k) smatra graničnim sadržajem minerala 1. Shodno tome, ako je kategorija sadržaja [g2(l), g2(l +1)] minerala 2 koja odgovara k* predstavljena kao l*, onda se niži sadržaj u l*, g2(l) smatra graničnim sadržajem minerala 2. Na osnovu toga slede proračuni. 1) Količine rude, odnosno količine ...
    ... ležište se sastoji od L pojedinačnih kategorija sadržaja ili priraštaja minerala 2 za svaku kategoriju sadržaja ili priraštaja minerala 1, što se predstavlja kao: (4.40) Shodno tome, za svaku kategoriju sadržaja minerala 1 i L kategorije sadržaja minerala ...
    ... of Mining and Metallurgy, Carlton Victoria, Australia. Caccetta, L., Giannini, L.M., 1988, An Application of Discrete Mathematics in the Design of an Open Pit Mine, Discrete Applied Mathematics, Vol. 21, pp. 1–19. Caccetta, L., Hill, S.P., 2003, An Application of Branch and Cut to Open Pit Mine ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... , Z., Palcsu L. (2020): Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava-Belosavac-Belosavac-2 (eastern Serbia) Carbonates EFvaporites, Springer, 35: 16, https://doi.org/10.1007/s13146-020-00550-3 Fiorillo, F., Esposito, L., Pagnozzi, M ...
    ... First Edition. J. Ganoulis, A. Aureli and }. Fried (Eds.). Wiley- VCH Verlag GmbH & Co. KGaA. 2011. pp. 143-149, DOI: 10.1002/9783527636655.ch4 emcov, l, Milanović S., Milanović, P.T. (2010): Decision Support Procedure for Constructing Karst Underground Reservoirs – a Case Study on Perućac Karst Spring ...
    ... 73/2:107 - 118; https://doi.org/10.4154/gc.2020.08 Vasić, lj, Milanović, S., https://doi.org/10.1038/s41597-019-0346-5 Puskas-Preszner, A., Palcsu, L. (2020): Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad ...

  • 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

  • The oil industry and climate changes

    Dejan Radivojević (2020)
    Uprkos tome što je problem klimatskih promena poznat dugi niz godina i dalje veliki broj ljudi poistovećuje pojam vremenskih prilika sa klimom ne uzimajući u obzir različitu dužinu njihovog trajanja. U medijima se vrlo često mogu naći katastrofična predviđanja vezana za zagrevanje naše planete usled neodgovornog ponašanja čoveka. Sa druge strane geolozi znaju da je tokom geološke prošlosti naše planete bilo mnogo toplijih intervala od današnjih kao i da ti intervali nisu neminovno rezultovali masovnim izumiranjem živog sveta već su ...
    vremenske prilike, klima, naftne kompanije, strategije, Srbija
    ... pristup u rešavanju problema klimatskih promena investirajući u energetsku efikasnost i alternativne izvore energije. LITERATURA [1] Lisiecki L. E, Raymo ME. Correction to A Pliocene- Pleistocene stack of 57 globally distributed benthic δ18O records. Paleoceanography and Paleoclima- tology ...

  • Multiword Expressions between the Corpus and the Lexicon: Universality, Idiosyncrasy and the Lexicon-Corpus Interface

    Verginica Barbu Mititelu, Voula Giouli, Kilian Evang, Daniel Zeman, Petya Osenova, Carole Tiberius, Simon Krek, Stella Markantonatou, Ivelina Stoyanova, Ranka Stankovic, Christian Chiarcos (2024)
    Predstavljamo trenutne aktivnosti na definisanju interfejsa leksikona i korpusa koji će služiti kao referenca u prikazu polileksemskih jedinica - višečlanih izraza - (različitih tipova - imenskih, glagolskih, itd.) u specijalizovanim leksikonima i povezivanju ovih unosa sa njihovim pojavljivanjima u korpusima. Konačni cilj je korišćenje ovakvih resursa za automatsko identifikovanje višečlanih izraza u tekstu. Uključivanje nekoliko prirodnih jezika ima za cilj univerzalnost rešenja koje nije usredsređeno na određeni jezik, kao i prilagođavanje idiosinkrazijama. Raspravljaju se izazovi u leksikografskom opisu višerečnih ...
    multiword expression lexicon, corpus, proof-of-concept lexicon encoding

  • 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
    ... dialect the reflection of the Old-Church Slavonic “Jat” is an “e”, while in Iekavian it can be “je”, “ije” or “i” which can also modify preceding phoneme: l+je → lje ; n+je → nje etc. For that reason rules are applied to Iekavian entries since the reflection of “jat” is easier to detect in them. Some rules ...

  • Properties of fly ash and slag from the power plants

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...
    fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method
    ... Croatica 69/3324 THOMAS, M. (2007): Optimizing the Use of Fly Ash in Concrete, Portland Cement As- sociation, 1–24. VASSILEV, S., BAXTER, D., ANDERSON, L. & VASSILEV, C. (2013): An overview of the composition and application of biomass ash. Part 1. Phase-mineral and chemical composition and classification ...

  • Wordnet Development Using a Multifunctional Tool

    Ivan Obradović, Ranka Stanković (2007)
    In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...
    Wordnet development, language resource integration, HLT tools
    ... Yablonsky. Russian WordNet, Proceedings of the Second International WordNet Conference – GWC 2004, Brno, Czech Republic, pp. 31-38, 2004. [2] L. Benítez, S. Cervell, G. Escudero, M. López, G. Rigau, and M. Taulé. Methods and tools for building the Catalan WordNet. Workshop on Language Resources ...

  • 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 ...
    ... entities are represented by their first letter (e.g. P re- presents PERS). It should be noted that the EVENT type did not occur in this dataset. ID P R L D O W ∑ tok 19070 44 55 23 23 3 0 2,027 19180 18 13 2 5 0 5 3,928 19121 33 18 14 2 0 0 3,045 Table 4: SrpELTeC-eval NE distribution. We applied the ...

  • 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
    ... god. XXV, br. 1 The carbon content of thc fuel mixture can be calculated using the equation [8]: 1 Wt%OC, — 100 mixture — » ;gn,mnenu (Wt%l· ·Wt%c,·) (8) Where: W/t%; - weight percent of component i; W/t%c;i - carbon content of component i on a weight basis. The CO- emission factor ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • Примена беспилотних летилица при месечном снимању радова на површинском копу ,,Дрмно”

    Теодора Унгурјановић (2024)
    Циљ истраживања је да се оцени ефикасност и прецизност беспилотних летелица у прикупљању података, напретку радова и употребљивост у оптимизацији операција на копу. Коришћени су напредни сензори и софтвери за обраду података како би се омогућила детаљна анализа терена и обим ископаног материјала. Овај рад истражује различите методе снимања терена, укључујући ласерско скенирање и фотограметријско снимање терена. Такође, детаљно се анализира употреба беспилотне летелице модела Aibot X6 V2 за месечно снимање радова на површинском копу ,,Дрмно“. Прикупљени подаци су обрађени помоћу ...
    беспилотне летелице, фотограметрија, ласерско скенирање, ПК ,,Дрмно“, обрада снимака
    ... pecypca. 18 Teko A kaseta A Teko A kaseta B datum snimanja 26.02.2020 datum snimanja 26.02.2020 "'mm*" vreme snimanja 10:15h : Snimili i obrađihi: [L.4 Marković,đipl.ing.rud. dič i 16gau6. Aleksandar Laban, ing.geod. ap sp WDR - Mirjana Đorđević, rud.tehn. 27 February 2020. 27 February 2020. | ...