Претрага
322 items
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
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 EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System
This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFISMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958
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Fuzzy Model for Risk Assessment of Machinery Failures
The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...... Fuzzy Set and Fuzzy Logic Theories for Risk Assessments Fuzzy set theory represents a mathematical approach that is suitable for the analysis of processes in which uncertainty, ambiguity, subjectivity, and indeterminacy are prevalent. It was developed to treat insufficiently precise phenomena that ...
... (e.g., the interruption of the fuel supply to the diesel engine). This is a seemingly innocuous problem, but it can cause massive problems in the processes of crushing and screening rock mass. The risk of this type of failure can be easily reduced by installing an additional fuel filter. A similar situation ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy Model for Risk Assessment of Machinery Failures" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12040525
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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... a set of the most recent data. To decrease uncertainty of future values of the operational efficiency we use expert‘s knowledge and simulation processes to find future values of input variables affecting them. Estimation of future revenues is based on the applicationofmean reversion process, normal ...
... Symposium, pp.381-391, Wollongong, Australia, 24-30 September 2011. [PAPOULIS91] A. Papoulis, Probability, Random Variables, and Stochastic Processes, McGraw-Hill, New York, 1991. [PETRIĆ82] J. Petrić, Metode planiranja u složenim organizacijama udruženog rada, Nauĉna knjiga, Beograd 1982. ...
... 2007. [SANCHEZ13] F. H. M. Sánchez, Y. C. Vargas & M. P.Cardozo, ―Numerical Comparison of Pricing of European Call Options for Mean Reverting Processes‖, International Journal of Research and Reviews in Applied Sciences, Vol. 14, No. 2, pp.358-395, 2013. [SCHWARTZ97] E. Schwartz, ―The stochastic ...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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Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda
Đorđije M. Božović (2023)Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package... 193 Siergieiev, D., Ehlert, L., Reimann, T., Lundberg, A., Liedl, R., 2015. Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions. Hydrol. Earth Syst. Sci., 19, 329–340. DOI: 10.5194/hess-19-329-2015 194 Singhal, V., Goyal, R., 2012. Development ...
... Hydrogeology Journal. 26 (8), 2919–2932. DOI: 10.1007/s10040-018-1822-2 207 Veličković, B., 2005. Colmation as one of the processes in interaction between the groundwater and surface water. Facta universitatis ‒ series Architec. & Civil Engin., 3 (2). DOI:10.2298/FUACE0502165V 208 Verstraeten, I.M: ...
... 10.3133/sir20085071 82 Houben, G.J., Batelaan, O., 2021. The Thiem team – Adolf and Günther Thiem, two forefathers of hydrogeology. Hydrology and Earth System Sciences, 26 (15), 4055–4091. DOI: 10.5194/hess-26-4055-2022 83 Houben, G.J., Sander, J., 2020. Preventing the growth of iron bacteria in ...Đorđije M. Božović. Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda, Beograd : [Đ. Božović], 2023
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Развој геолошког терминолошког речника ГеолИССТерм
... (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 DIcTIONAry ...
... Instances (individual entities) – relations between these entities – Properties and the values of properties of these entities – Functions and processes that these entities are included in – constraints and rules that refer to these en- tities Therefore, an ontology can be viewed formal rep ...
... identified by lithic characteristics and stratigraphic position; it is prevailingly, but not necessarily, tabular and is map- pable at the earth’s surface or traceable in the subsur- face (NAcSN, 2005). Synonyms (English): none References: North American Stratigraphic code grupa autora 2005. AAPg; ...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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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... 15 days 10 3000 10000 15 4000 15000 The intensity of these processes depends largely on the ash fineness (particle size and particle size distribution), so that the pozzolanic reactivity increases with the specific surface of ash. International standard ASTM C 311 describes the procedures ...
... to create elements for road structures, but it must be taken into account that the embedding is done in segments, isolated from the influence of surface water and groundwater. Keywords: chemical composition; fly ash; mechanical properties; mineral properties; pozzolanic properties; X-ray diffraction ...
... used to create elements for road structures. It must be taken into account that the embedding is done in segments, isolated from the influence of surface water and groundwater, because with this, in terms of road operation, it prevents the leaching of harmful chemicals from layers of ash and slag, ...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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The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...... solar potential, GIS, solar mapping. 1. Introduction Solar radiation is the primary source of energy for many physical and biological processes on Earth and it is one of the basic preconditions for the existence of the living world. In essence, energy received from the Sun is in the form of ...
... energy received from the Sun per unit area of the Earth's surface (kWh/m?). The solar irradiation in a specific area depends on latitude (geographic coordinate that specifies the north-south position of a point on the Earth's surface) because it determines the duration of daily solar radiation ...
... Elev = The elevation above sea level in meters. The effect of surface orientation is taken into account by multiplying by the cosine of the angle of incidence. The angle of incidence (AngInSkyo ) between the intercepting surface and a given sky sector with a centroid at zenith angle and azimuth ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
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Open Educational Resources in Serbia
... can also be very time-consuming and expensive 2. One of many mechanisms for creating roles for students as active participants in educational processes is provided by the principle of allowing adaptation of materials. Students learn best not by merely passively reading and absorbing, but by doing ...Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević. "Open Educational Resources in Serbia" in Current State of Open Educational Resources in the “Belt and Road” Countries, Springer Singapore (2020). https://doi.org/10.1007/978-981-15-3040-1_10
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Mesozoic carbonate rocks in Serbia used as dimension stone
Vesna Matović, Tijana Vojnović Ćalić (2016)The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...... the investigated limestones: a Klisura red nodular limestone (polished surface); b Klisura biomicrite; c Skrzut limestone (polished surface), d Skrzut biomicrudite; e Struganik limestone (nafural split surface); and f Struganik biomicrite biosparrudite, intrabiosparrudite (rudstone ...
... of the Tisnica limestone: a Stromatolite limestones (saw-plane surface); b Fenestral texture of biolitite with geopetal structural patterns; c spherical forms of reddish-pink oncoids in oobiomicrudite (saw-plane surface); and d Completely recrystallized macrofaunal remains of biomicrudite ...
... absorption (Fig. 4b). Concerning porosity, these rocks have very low absorption (<0.5 %). This fact contributes to their durability to weathering processes. According to the arithmetic mean, the Klisura nodular limestone has the highest value of compressive strength (171 N/mm? in a dry state), whereas ...Vesna Matović, Tijana Vojnović Ćalić. "Mesozoic carbonate rocks in Serbia used as dimension stone" in Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s10064-015-0722-0
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... Alpine-Himalayan Orogenic Mantle Lithosphere. Earth and Planetary Science Letters, 362, 187–197. FOLEY S.F., PRELEVIĆ D., REHFELDT T., JACOB D.E., 2013: Minor and trace elements in olivines as probes into early igneous and mantle melting processes. Earth and Planetary Science Letters-Frontiers, 363 ...
... investi- gations of two processes for zinc recovery from zinc plant residue, Canadian Metallurgical Quaterly, 2011. 79. Athanassiou C., Kavallieratos N., Vayias B., Tomanović Ž., Petrović A., Rozman V., Adler C., Korunić Z., Milovanović D.: Laboratory evaluation of diatomaceous earth deposits mined from ...
... 2013. 221. Foley S., Prelević D., Rehfeldt T., Jacob D.: Minor and trace elements in olivines as probes into early igneous and mantle melting processes, Earth and Planetary Science Letters, 2013. 222. Kremenović A., Lazić B., Krüger H., Tribus M., Vulić P.: Monoclinic struc- ture and nonstoichiometry ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Using Lexical Resources for Irony and Sarcasm Classification
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) ...... 52th ACL. 42–49. [7] John D Campbell and Albert N Katz. 2012. Are there necessary conditions for inducing a sense of sarcastic irony? Discourse Processes 49, 6 (2012), 459–480. [8] Paula Carvalho, Luís Sarmento, Mário J Silva, and Eugénio De Oliveira. 2009. Clues for Detecting Irony in User-generated ...Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković. "Using Lexical Resources for Irony and Sarcasm Classification" in Proceedings of the 8th Balkan Conference in Informatics (BCI '17), New York, NY, USA, : ACM (2017). https://doi.org/
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Electronic Dictionaries - from File System to lemon Based Lexical Database
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 ...... 000 feminine counterparts of surnames that are all connected to basic lemmas. For treatment of lexical variants, as well as simple deriva- tion processes, as described in Subsection 6.1., we applied a different approach. In SMD, 5,592 lexical entries are an- notated with one of 86 VAR markers. This ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić. "Electronic Dictionaries - from File System to lemon Based Lexical Database" in Proceedings of the 11th International Conference on Language Resources and Evaluation - W23 6th Workshop on Linked Data in Linguistics : Towards Linguistic Data Science (LDL-2018), LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović. "Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin" in Carpathian Journal of Earth and Environmental Sciences (2014)
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening... in aquatic organisms to a level that affects their physiological state. Trace metals such as Zn, Cu and Fe play a bio- chemical role in the life processes of all aquatic plants and animals; therefore, they are essential in the aquatic environment in trace amounts.6 One of the major problems that heavy ...
... care products, etc. Many of them are known to have, or are suspected to have, toxic, ecotoxic or endocrinic effects at trace levels. Note- worthy, surface water is becoming more and more relevant as a source of drink- ing water. Therefore, an appropriate water quality control is needed as a base for ...
... Herzegovina and Serbia. The Sava River Basin covers a catchment area of 95 719 km2, which is approximately 40 % of the countries’ combined total surface area and it is the source of more than 80 % of the total available freshwater in the area. Only a few publications have considered contamination ...Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A
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FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain
U radu se daje kratak prikaz teorije semantike okvira, na kojoj je zasnovana leksička baza Frejmnet. Predstavljena je koncepcija ove mreže, kao i mogućnosti njene primene. Predstavljena je i leksička analiza koja se primenjuje u projektu izrade Frejmneta i ukazano na razlike između analize zasnovane na okviru u odnosu na analizu zasnovanu na reči. Zatim je prikazano nekoliko povezanih okvira koje prizivaju reči iz domena rizika. U radu je predstavljena i platforma NLTК pomoću koje se mogu koristiti ...... number of 12. Fillmore et al. (2003, 304) use British National Corpus. 12 Infotheca Vol. 21, No. 1, September 2021 Scientific paper automated processes generate a subcorpus ready for annotation. This sub- corpus is then cleaned of sentences that are too long or in any other way inadequate, and from ...Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović. "FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.1
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Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)
Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović. "Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)" in Materials, MDPI AG (2024). https://doi.org/10.3390/ma17040820
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Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike
... criteria selection of manufacturing processes in the conceptual process planning. Advances in Production Engineering and Management , 12 (2), p. 151-162. [4] Novakovic, B., Radovanović, Lj., Đurđev, M., Speight, J. (2018). Optimization of manufacturing processes using modern automated CNC milling ...
... purposes, in addition to groundwater, rivers, reservoirs and lakes. Based on human economic needs for freshwater. The total amount of water on earth is about 1386 million km3. However, not all of these water resources are potentially available to humans since freshwater is required by the agricultural ...
... cultural barriers to sharing knowledge. Journal of Knowledge Management, 5(1), 76-85. [8] Lee, H. & Choi, B. (2003). Knowledge management enablers, processes, and organizational performance: an integrative view and empirical examination. Journal of Management Information Systems, 20(1), 179- 228. [9] ...Мирослав Црногорац, Душан Даниловић, Лола Томић. "Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike" in IX Naučno stručni skup Preduzetništvo, inženjerstvo i menadžment Zrenjanin, 24.10.2020. god., Visoka tehnička škola strukovnih studija u Zrenjaninu (2020)
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Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event
Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco. "Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event" in Historical Biology (2023). https://doi.org/10.1080/08912963.2023.2190757
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Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)
In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinicaAna Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković. "Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)" in Swiss Journal of Geosciences, Springer (2019). https://doi.org/10.1007/s00015-018-0324-5