Претрага
257 items
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Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... ingestion (CAI) of South Pannonian Basin (Serbia) is cal- culated. The cumulative As exposure index (CAI) was esti- mated using four parameters: the concentration of As in the groundwater . The cumulative As exposure index (CAI) was estimated using four parameters: the concentration of As in the groundwater ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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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 ...... Princeton wordnet, and aligned by interconnecting synsets representing the same concept in different languages via an Inter-Lingual-Index (ILI) [14]. This index also gives access to a shared top-ontology that provides a common semantic framework for all the languages, while language specific ...Ivan Obradović, Ranka Stanković. "Wordnet Development Using a Multifunctional Tool" in Proceedings of the International Workshop Computer Aided Language Processing (CALP) '2007, Borovets, Bulgaria, September 2007, - (2007)
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Geomagnetna bura kategorije G5 u maju 2024. godine
Magdalena Marčeva (2024)Zemlja poseduje magnetno polje, koje je generisano u njenom spoljašnjem jezgru. Magnetno polje Zemlje je konstantno izloženo dejstvu sunčevog magnetnog polja i zračenja koje se sa Sunca emituje. Naelektrisane čestice koje pristižu sa Sunca stupaju u interakciju sa magnetosferom, što dovodi do različitih geomagnetnih poremećaja.Geomagnetna aktivnost direktno je proporcionalna intenzitetu sunčevog zračenja koje dolazi do Zemlje. Pod uticajem sunčevog korpuskularnog zračenja dolazi do pojave geomagnetnih bura koje su praćene porastom intenziteta magnetnog polja.Količina i jačina dolaznog sunčevog zračenja zavisi ...... URL: https://www.nce1.noaa.gov/products/geomagnetic-indices National Geophysical Data Center, 2024. Dst index. URL: https://www.ngdc.noaa.gov/stp/geomag/dst.html Space Weather Live, 2024. KP index. URL: https://www.spaceweatherlive.com/en/auroral-activity/kp-index.html Space Weather Prediction ...
... - 10&dataDuration=1 &submitValue=Vicew+%2F+Download&request=DataVie wd&samplesPerDay=minute Institut de Physique du Globe de Strasbourg. Dst index. URL: https://isgi.unistra.fr/indices_dst.php 27 Jin, S., Liu, S. & Huang, C., 2017. A comprehensive study of geomagnetic storm effects on ...Magdalena Marčeva. Geomagnetna bura kategorije G5 u maju 2024. godine, 2024
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Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... ingestion (CAI) of South Pannonian Basin (Serbia) is cal- culated. The cumulative As exposure index (CAI) was esti- mated using four parameters: the concentration of As in the groundwater . The cumulative As exposure index (CAI) was estimated using four parameters: the concentration of As in the groundwater ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
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Geofizičko reflektivno sondiranje kao test integriteta betonskog šipa
Jovo Jakišić (2024)Temelj predstavlja izuzetno bitan element svakog građevinskog objekta. Zbog toga je neophodno poštovati odgovarajuće standarde, u projektovanju i izvođenju temeljne konstrukcije.Šipovi predstavljaju jedan od načina dubokog fundiranja tj. temeljenja. Za svaki izvedeni šip pojedinačno neophodno je izvesti kontrolu kvaliteta. Postoji više postupaka kojima je mogućeizvršiti kontrolu kvaliteta, a jedan od njih je test integriteta šipa malom silom, koji je prikazan u ovom radu.Ovaj postupak se izvodi seizmometrijskom metodom, postupkom refleksije, koji je definisan međunarodnim standardom ASTM D5882.Podaci koji su prikazani ...... signala (ASTM D5882) | Reference za ASTM Standard su: - C 469 Test Method for Static Modulus of Elasticity and Poisson's Ratio of Concrete in Compression - D1I98 Methods of Static Tests of Timbers in Structural Sizes - D653 Terminology Relating to Soil, Rock, and Contained Fluids - D1II143 Method ...Jovo Jakišić. Geofizičko reflektivno sondiranje kao test integriteta betonskog šipa, 2024
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Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector
To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatoriBoban Pavlović, Dejan Ivezić, Marija Živković. "Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector" in Energy Policy, Elsevier BV (2020). https://doi.org/10.1016/j.enpol.2020.111936
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
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Стабилизација косине приступног пута у југоисточном делу површинског копа „Ћерамиде“
Никола Анђелић (2024)Експлоатација дацита као техничког камена се на површинском копу "Ћерамиде" врши дисконтуалном технологијом уз примену бушачко-минерских радова и високо капацитативне и габаритне опреме. Примане наведене технологије захтева стабилне и безбедне транспортне путеве како би се планирана производња и реализовала. Услед клизишта које је настало у зони главног извозног пута на површинском копу дацита "Ћерамиде" неопходно је обезбедити одговарајуће техничко решење којим би се косина пута довела у стабилно стање. У том смислу предложено је техничко решење са насипањем косине ...... %:OJZ·(;—";I) (1.13) 1.9.2. GSI (Geological Strength Index) klasifikacija Analizom stanja stenskog materijala dacita (dacit I faze) ı alterisanog, dacita (dacit II faze) koji izgrađuje kosine primenjena Je opšte prihvaćena GSI (Geological Strength Index) klasifikacija. U ovom slučaju za stenski masiv ...
... “Ćeramide” kod Rudnika........aaaaaaaaanakaa ii attiitidittitittttitittitt 1.8.1. Hoek-Brown-ov kriterijum loma. 1.8.2. GSI(Geological Strength Index) klasifikacija..aaaaaaaaaaaaaaaaan... 17 1.8.3. Procena vrednosti faktora oštećenja stenskog masiva D........c.annnn...... 19 1.8.4. Utvrđivanje ...
... Je primenom Hoek-BHrown-ovog kriterijuma loma. Analiza stanja stenskog masiva izvrišena Je primenom opšte prihvaćene GSI (Geological Strength Index) klasifikacije za utvrđivanje fizičko-mehaničkih svojstava stenskog masiva. Prema rezultatima ispitivanja fizičko-mehaničkih svojstava stenskog ...Никола Анђелић. Стабилизација косине приступног пута у југоисточном делу површинског копа „Ћерамиде“, 2024
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Old or New, We Repair, Adjust and Alter (Texts)
Cvetana Krstev, Ranka Stanković (2020)U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja... Dictionary to Lex- imirka Lexical DataBase”. Infotheca – Journal for Digital Humanities Vol. 19, no. 2 (2019): 00–00, https://infoteka.bg.ac.rs/ojs/index. php/Infoteka/article/view/2019.19.2.4_en Miller, George A and Elizabeth A Friedman. “The reconstruction of muti- lated English texts”. Information ...
... Yugoslav Rock Song Lyrics Corpus from 1967 to 2003”. Infotheca – Journal for Digital Humanities Vol. 19, no. 1 (2019): 5–29. https://infoteka.bg.ac.rs/ojs/index. php/Infoteka/article/view/2019.19.1.1_en Salloum, Wael and Nizar Habash. “Elissa: A dialectal to standard Arabic machine translation system”. In ...Cvetana Krstev, Ranka Stanković. "Old or New, We Repair, Adjust and Alter (Texts)" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.3
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Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit
Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina. "Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit" in 9th International Conference Mining and Environmental protection MEP, 24 – 27 May 2023, Sokobanja, Serbia , Belgrade : University of Belgrade-Faculty of mining and geology (2023)
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Избор одговарајуће механичке методе
Анастасија Мирјанић (2024)Експлоатација нафте и гаса кључна је за задовољење глобалних енергетских потреба. Различите методе се користе за ефикасно вађење тих природних ресурса из земљe. Механичке методе експлоатације, које укључују различите врсте пумпи и компресора, играју значајну улогу у овом процесу. У нафтној индустрији, ефикасно вађење нафте и гаса зависи од избора одговарајуће технологије пумпања. Две од најраспрострањенијих технологија су дубинске пумпе са клипним шипкама (енгл. Sucker rod pumps- SRP) и електричне потапајуће пумпе (енгл. Electrical submersible pump- ESP). Овај завршни рад ће ...Анастасија Мирјанић. Избор одговарајуће механичке методе, 2024
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Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...... during pyrolysis (mg HC/g rock) from 300 to 650 ºC; S3 – amount of CO 2 generated from oxygenated functional groups (mg CO2/g rock); HI – hydrogen index = (S2 x 100)/TOC; mg HC/g TOC); T max – temper- ature of peak HC generation (ºC). 4 N. ALEKSIC ET AL. The oldest stratigraphic unit in the area is ...
... generated during pyrolysis (mg HC/g rock) from 300 to 650 °C; S3 — amount of CO? generated from oxygenated functional groups (mg CO?/g rock); HI — hydrogen index = (S2 x 100)/TOC; mg HC/g TOC); T max — temper- ature of peak HC generation (°C). 5COMPOSITION OF ORGANIC MATTER AND THERMAL MATURITY taken from ...
... Noble, 1994; Hunt, 1996; Yang and Hors�eld, 2020) or for low-TOC sediments (TOC <0.4%; Peters and Nelson, 1992). Along with T max, the production index (PI), the ra- tio between free and total hydrocarbons [S1/(S1+S2)], also is usually employed as a maturity indicator, where PI > 0.1 indicates su�cient ...Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić. "Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)" in Annales Societatis Geologorum Poloniae (2021). https://doi.org/10.14241/asgp.2021.16
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Proširivanje upita zasnovano na leksičkim resursima
U radu je opisano kako se leksički resursi za srpski jezik i softverski alati, razvijeni u okviru Grupe za jezičke tehnologije Univerziteta u Beogradu, mogu koristiti za unapređenje postavljanja upita. Rezultati pretrage mogu biti značajno unapređeni korišćenjem različitih leksičkih resursa, kakvi su morfološki rečnici i semantičke mreže. Izloženi pristup može se iskoristiti i u Sistemu naučnih, tehnoloških i poslovnih informacija, jer je efikasno pretraživanje ovog dragocenog resursa, imajući u vidu njegovu heterogenost i obim, kao i preovladavajući tekstualni sadržaj, ...... između sinseta kojima je isti koncept predstavljen u različitim jezicima u EWN je uspostavljena veza preko tzv. međujezičkog indeksa (Inter-Lingual-Index ili skraćeno ILI). Polazeći od istog principa, u okviru projekta BalkaNet, koji je od 2001. godine do 2004. godine finansirala Evropska komisija ...Ranka Stanković, Ivan Obradović, Cvetana Krstev. "Proširivanje upita zasnovano na leksičkim resursima" in SNTPI 09 - Naučno-stručni skup Sistem naučnih, tehnoloških i poslovnih informacija, Beograd 19. i 20. jun 2009, Beograd : Fakultet informacionih tehnologija (2009)
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Terminological and lexical resources used to provide open multilingual educational resources
Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...... is denoted by a “literal string” followed by a “sense tag” which represents the specific sense of the literal string in that synset. Interlingual index (ILI) enables the connection of the same concepts in different languages. The Serbian WordNet covers about 20 000 synsets [9] from different specific ...Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić. "Terminological and lexical resources used to provide open multilingual educational resources" in The Seventh International Conference on eLearning (eLearning-2016), 29-30 September 2016, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2016)
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Development of terminological resources for expert knowledge: a case study in mining
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić. "Development of terminological resources for expert knowledge: a case study in mining" in Knowledge Management Research & Practice, Palgrave Macmillan (2015). https://doi.org/10.1057/kmrp.2015.10
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... 1977). These rocks are intercalated with dacitic and andesitic volcanoclastic rocks (Vukanović et al. 1977). Apart from the Early Cretaceous compression discussed above, brittle deformation in central SMM also includes Late Cretaceous normal faulting, Eocene-Oligocene extension (Antić et al ...
... metamorphic grade observed across brittle thrusts in the castern part of the study area could be explained by telescoping during the Cretaceous compression. The general south-eastward tectonic transport during D, cannot explain the increase in the metamorphic grade from east to West observed in ...
... doi:10.1007/ s00531-012-0764-5 Karamata S (2006) The geological development of the Balkan Pen- insula related to the approach, collision and compression of Gondwanan and Eurasian units. Geol Soc Spl Publ 260:155— 178. doi:10.1144/GSL.SP.2006.260.01.07 Karamata S, Krstić B (1996) Terranes of Serbia ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... Mitt. Innsbruck, 13/11, 239–275. KARAMATA, S. (2006): The geological development of the Balkan Peninsula related to the approach, collision and compression of Gondwanan and Eurasian units.– In: ROBERTSON, A. H.F. & MOUNTRAKIS, D. (eds.): Tectonic development of the eastern mediterranean region. The ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi
Anđela Despotov (2024)U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...... određivanja otpornosti prema raspdanju obuhvata različite opite: opit sa potapanjem uzorka u posudu sa vodom (Jar slake test, Wood i Deo, 1975), Slake index test (Deo, 1972) i Slake durability test (Franklin i Chandra 1972). Slake durability test Je opit koji ima najčešću primenu, a predložen je od strane ...
... izvode se laboratorijski opiti od kojih su najpoznatiji: opit sa potapanjem uzorka u posudu sa vodom (Jar slake test, Wood i Deo, 1975), Slake index test (Deo, 1972) i Slake durability test (Franklin i Chandra 1972). Slake durability test je najčešće primenjivan opit, pre svega zato što je predložen ...Anđela Despotov. Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi, 2024