Претрага
270 items
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... (PPNT A) with the addition of a binder hydrated lime and cement. The aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of the road). Fly ash can be used to create elements for road structures, but it must be taken ...
... strength – Brazilian experiment, - the modulus of elasticity. The aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of the road). 2 Experimental 2.1 Mineral properties of fly ash Mineral properties of samples ...
... the application of ash as road-building material. Depending on the minimum compressive strength and tensile strength in bending after 7 days of making samples, three classes of pozzolanic material can be identified as given in Tab. 5. The composition of pozzolan mainly includes oxides SiO2, Al2O3 ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom
... flashcards falls into the category of deep strategies which take more time but ensure greater retention and ease retrieval memory (Nation 2003 22). By making extensive use of dictionaries and exposure to relevant items, this type of learning builds up deeper knowledge, and from a cost vs. benefit view ...
... vocabulary with flashcards is challenging The terms adopted from flashcards are very often found in my academic studies I find that the flashcard making is technically very demanding Questions related to flashcards 1 2 3 4 5 7 2 3 9 7 9 9 7 5 4 11 21 18 12 22 18 19 24 18 23 ...Lidija Beko, Ivan Obradović, Ranka Stanković. "Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom" in Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, May, 22-24, 2015, Niš, Serbia, Faculty of Electronic Engineering, University of Niš, Niš : Faculty of Electronic Engineering (2015)
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A Tel Platform Blending Academic And Entrepreneurial Knowledge
... educators, students, and self-learners to use and reuse for teaching, learning, and research.” [3] In this paper we propose a solution both for making emerging entrepreneurial knowledge available to students in academic institutions, and for updating academic knowledge of graduate students ...
... technologies in the teaching process. It is also meant to enhance cooperation among higher education institutions and increase transparency by making available an insight in the academic content universities are offering, which will help future students to select the university that best suits ...Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović. "A Tel Platform Blending Academic And Entrepreneurial Knowledge" in Proceedings of the The Fourth International Conference on e-Learning (eLearning-2013), September 2013, Belgrade, Serbia, Belgrade, Serbia : Belgrade Metropolitan University (2013)
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Nonequilibrium athermal random-field Ising model on hexagonal lattices
Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević. "Nonequilibrium athermal random-field Ising model on hexagonal lattices" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.032147
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima
Jelena R. Malenović - Nikolić (2016-07-12)Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranje... 6709-2002, http://www.vibilia.rs/ srpski/izvestaj/0409/britanski-standard_agm25_150605.pdf 200. Dean, J., Mark P. Does decision process matter? A study of strategic decision- making effectiveness’. Academy of Management Journal 39, 1996, pp. 368-396 201. Calantone, R., Benedetto, C., Schmidt, J., Using ...
... protection measures. The aim of this research is to prove the benefits of using contemporary management methods and energy indicatorsfor decision making, as opposed to management systems based on subjective opinions of individuals. The research analyses the use of the following methods: the ...
... International Journal of Global Environmental Issues 10, Nos. 1/2, 2010, pp. 5-24 30. Atran, S, Medin, D., Ross N., The Cultural Mind: Environmental Decision Making and Cultural Modeling Within and Across Populations, American Psychological Association, Psychological Review 112 (4), 2005, pp. 744 –776 ...Jelena R. Malenović - Nikolić. "Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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Building Terminological Resources in an e-Learning Environment
... FMG. Taken into account its e-format and the fact that for several years now FMG has been developing and using its Moodle e-learning platform, the decision has been made to develop an interface between RudOnto and Moodle. In this paper we describe how we have tackled this problem1. In the next ...
... Devedžić, V., Semantic Web and Education, Springer, 2006. [5] Kolonja, B., Stanković, R., Vuković, F., Obradović, I., An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System, Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Building Terminological Resources in an e-Learning Environment" in Proceedings of the Third International Conference on e-Learning, eLearning-2012, September 2012, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2012)
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An aproach to Implementation of blended learning in a university setting
... for this platform, as well as workshops related to exchange of experience in initial application of this e-learning support system. Hence, a decision was made to introduce Moodle to the already existent blended learning system at FMG. Moodle is a free and open source (published under the ...
... Moodle. This is how the Moodle InfoTeh course was created encompassing course material for several postgraduate courses: Databases, Intelligent decision support systems, Information system design, and GIS (Geographic Information System) technologies. InfoTech course material is hence not organized ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
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Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology
Mihailo Škorić, Mauro Dragoni (2019)This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...... 0057 0.0648 0.0103 Table 2. Тest sets used for classification and their results. Experiments were performed on documents from the TREC Clinical Decision Support 2016 set.11 The aim was to classify documents based on terms that denote concepts in the MESH ontology and that appear in those documents ...
... used in the evaluation was manually conducted by an expert team. The usual metrics of average mean precision, recal12 and F-measure 11 TREC Clinical Decision Support 2016 (on-line) 12 Relevant documents not included in the ranking were taken as false negatives. Infotheca Vol. 19, No. 1, September 2019 ...Mihailo Škorić, Mauro Dragoni. "Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology" in Infotheca, Faculty of Philology, University of Belgrade (2019). https://doi.org/10.18485/infotheca.2019.19.1.3
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Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini
Bojan Hajdin, Dušan Polomčić (2016)... The current decision of the neighbouring Republic of Hungary to enlarge the capacities of the existing nuclear power plant „Paks“, located on the Danube river, by two new reactors, poses a significant issue which requires extensive assessment of all aspects of the impact of such a decision on the enviroment ...Bojan Hajdin, Dušan Polomčić. "Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini" in Tehnika 66 no. 5, Beograd : Savez inženjera i tehničara (2016): 777-786. https://doi.org/10.5937/tehnika1604545H
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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... with a help of a Python library NLTK (Natural Language Toolkit). Besides just exposing more than 50 corpora and lexical resources, NLTK is used for making programs that handle human language data, ranging from tokenization to semantic reasoning. NLTK API makes it possible to create multiple standalone ...
... the word is of Noun category – same as for Default tagger. Obviously, this model AII 1.1.2 will perform better than the baseline tagger, but making the right rules demands significant effort. We did not invest much time in producing the rules, because we had not seen significant improvements ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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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... 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, L. J., 2006 ...
... 1997, Geostatistics for natural resources evaluation, Oxford University Press, New York. Grobler, F., Elkington, T., Rendu, J., 2011, Robust decision making-Application to mine planning under price uncertainty. 35th APCOM Symposium-Application of Computers and Operations Research in the Minerals Industry ...
... manual, the, Pearson Higher Education. Sabour, S., Wood, G., 2009, Modelling financial risk in open pit mine projects: implications for strategic decision-making. Journal of the Southern African Institute of Mining and Metallurgy, 109 (3), 169-175. Sabour, S. A., Dimitrakopoulos, R., 2011, Incorporating ...Mirjana V. Banković. "Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-07-13)
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Развој геолошког терминолошког речника ГеолИССТерм
... phrases) chosen to suit a special pur- pose determined by its author. These vocabular- ies are used for tagging information in databases and documents, making it easier to locate them when performing searches. Depending on their content, structure and organization, vocabularies, as terminological resources ...
... ultimately resulted in a partial analysis of the book Geologic Terminology and Nomencla- ture (Petković, 1975) and an analysis of the terms used when making certain sheets of the general geologic map (ggm) (fieldwork logs, map leg- ends and the descriptions found in them) and an analysis of the available ...
... System http://www.esri.com/arcgis (accessed may, 2011). geoSciml resources repository http://www.geo- sciml.org (accessed may, 2011) One geology - making geological map Data for the earth Accessible http://www.onegeology.org rANkA STANkOvIć eT Al. ‒ The DevelOPmeNT OF The geOlISSTerm TermINOlOgIcAl ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... where the basic baux- ite mass dominates over oolites and pisolites. The oolites and pisolites are mainly evenly distributed within the basic mass, making on average 30% of the overall bauxite mass. The highest areas of the ore body are made of the light red, multi-coloured, predomi- nantly kaolinitic ...
... shall also be carried out by using total station and it is to be carried out at the same time as setting out within the horizontal plane. While making the a priori accuracy assessment, the standard deviation for setting out zenith distances σ z = ± 15" was adopted, as well as standard ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... to the reasearch on ecosystem, Fuzzy Mathematics, 2, pp.51-54, 1985. [HUANG87] Huang Jianer, Applicatins of Grey statistics to investment decision making of foresty, Economic Problems of Forestry, 2, pp. 44-51, 1987. [HUI13] Hongqi Hui, Fachao Li and Yan Shi2: AN OPTIMAL MULTI-VARIABLE GREY ...
... Predrag Marjanovic, Dejan T. Riznic, Branko Z. Ljutic,Validity of information based on (cpv) analysis for the needs of short-term business decision making, Annals of the Oradea University Fascicle of Management and Technological Engineering ISSUE #2, pp. 131-139, 2013. [MILOVANOVIĆ13] Marija ...
... ns of System Engineering, 1, pp. 32-39, 1986. [WEYGANDT10] Weygandt J.J., Kimmel P.D., Kieso D.E., ―Managerial Accounting: Tools for Business Decision Marketing‖, 5th edition, Publishing House Wiley&Sons, 2010. [XIA87] Xia Jun, Estimating influences by the environment for exploiting the water ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking
U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, VikipodaciRanka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović. "Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking" in Proceedings of the 9th Workshop on Linked Data in Linguistics @ LREC-COLING 2024, Turin, 20-25 May 2024, ELRA and ICCL (2024)
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A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area
Filip Anđelković, Dejan Radivojević (2018)... ACKNOWLEDGEMENTS The authors wish to thank their colleague Miloš Radonjić, dipl. ing. geol. on his useful advice and permanent support during the making of the paper. LITERATURA / REFERENCES Anđelković, M., 1987. Geologija šire okoline Beograda – Geologija i geodinamika. Zavod za regionalnu ...Filip Anđelković, Dejan Radivojević. "A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Integrative GHG Assessment in Oil and Gas Industry
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 ...... available? |-|MČq*č—— j}| estimate CO> emlsslqn;. Estimate . uncombusted CHu by utilizing combustion efficiency Figure 1. Flare Gas Emissions- Decision Schema e> energija, ekonomija, ekologija, 2023, god. XXV, br. 1 The carbon content of thc fuel mixture can be calculated using the equation ...
... combustion efficicncy. · Bt%C, mix 44 —.cF ( w (9) The emission factor can then be adjusted by flare combustion efficicncy. The high-level decision schema based on API Compendium methodology is presented in Figure 1. III MODEL – CASE STUDY For thc purposc of presenting the mentioned approach ...Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa. "Integrative GHG Assessment in Oil and Gas Industry" in Energija, ekonomija, ekologija (2023). https://doi.org/10.46793/EEE23-1.51M
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Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?
Стефан Петровић, Наталија Батоћанин (2020)У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...... Relics of orthopyroxene, clinopyroxene and secondary magnesite and magnetite, as well as the opaque accessories are subordinated. Talc is occasionally making up to 50 vol. % of rocks. Fibrous and fan-shaped talc are distributed in bands up to 8 mm thick, which alternate with bands of closely mingled olivine ...
... h variety of average composition [(Mg10.66Fe2+ 1.04)11.70(Fe3+ 0.06Al0.03Si7.94)8.03O5(OH)4]. Orthopyroxene is the second mineral in abundance making up to 30 vol. % of rocks. Subhedral grains of it, sporadically exceeding 4 mm (porphyroclast) display bending characteristic for tectonites and weak ...Стефан Петровић, Наталија Батоћанин. "Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?" in Записници српског геолошког друштва, Српско геолошко друштво, Београд (2020)
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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4