Претрага
508 items
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Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas
This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – ...HPP ''Djerdap 1'', backwater influence, groundwater regime, hydrodynamic analysis, melioration area, drainage system, additional energy engagementPredrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić. "Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas" in IWA Specialist Groundwater Conference, Conference Proceedings and Book of Abstracts, 09-11 June 2016, Belgrade, Serbia, Institut Jaroslav Černi (2016)
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The ‘Umka’ landslide
We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoringUroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević. "The ‘Umka’ landslide" in Journal of Maps, Informa UK Limited (2024). https://doi.org/10.1080/17445647.2024.2418580
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3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeSaša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac. "3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s12665-013-2591-9
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Some examples of interactions between certain rare earth elements and soil
... radiation from the copper (Cu) anticathode, Wavelength, nm 15.4178 Scan range, 2 o 2 – 70 Step size, 2 o 0.01 Time constant, o / min 10 Scan range (clay minerals), 2 o 2 – 30 Step size (clay minerals), 2 o 0.01 Time constant (clay minerals), o / min 5 Acce pted M anuscr ipt ...
... adjusted. The solutions were mixed at the shaker at the speed of 80 rpm for two hours, and then they were filtered through “blue band” filter paper (pores size < 2 μm) into the 100 mL volumetric flasks. The sediments were rinsed three times with 10 mL distilled water each and filled up with distilled water ...
... INTERACTIONS OF RARE EARTH ELEMENTS AND SOIL 5 quantity of adsorbate remaining in the equilibrium solution following adsorption, whereby the distribution between the liquid and solid phase of adsorption solution for different concentrations is presented. Most often by adsorption isotherms the i ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N
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Powers of Salem Numbers and Distribution Modulo 1
Stankov Dragan (2015)Stankov Dragan. "Powers of Salem Numbers and Distribution Modulo 1" in 29th Journées Arithmétiques, Debrecen:Debrecen Egyetem (2015): 83-83
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... concentration process. The ore is crushed, then milled to the average size of 0.1 mm in grain diameter. The grain-size distribution is of vital interest for the environmental impact assessment of the tailings. Based on the grain-size distribution investigation, done for the tailing waste Bostanište, the particles ...
... shown for the flotation tailing waste Gornje Polje. The chemical composition is analyzed by the atomic absorption spectroscopy (AAS) method and the distribution maps are determined by scanning electron microscopy (SEM). The obtained results are presented in the Table 2 [14]. Mineralogy composition is determined ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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Distribution Modulo One of the Sum of Powers of a Salem Nubmer
Stankov Dragan (2015)Stankov Dragan. "Distribution Modulo One of the Sum of Powers of a Salem Nubmer" in Šesti simpozijum Matematika i primene zbornik radova, Beograd:Univerzitet u Beogradu Matematički fakultet (2015)
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Distribution of canonical syllable types in Serbian
Obradović Ivan, Obuljen Aljoša, Vitas Duško, Krstev Cvetana, Radulović Vanja. "Distribution of canonical syllable types in Serbian" in Text and Language, Structures · Functions · Interrelations. Quantitative Perspectives, P. Grzybek, E. Kelih, J. Mačutek (eds.), Wien:Praesens Verlag (2010): 145-157
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Spatial distribution of the Demir Kapija (Macedonia) ophiolite based on geomagnetic data
Petrović Dragana, Cvetkov Vesna, Cvetković Vladica. "Spatial distribution of the Demir Kapija (Macedonia) ophiolite based on geomagnetic data" in Tehnika 2 no. 71, Beograd :Savez inženjera i tehničara (2016): 215-220. https://doi.org/DOI : 10.5937/tehnika160221
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A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenikaGordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević. "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, Elsevier BV (2021). https://doi.org/10.1016/j.marpetgeo.2021.105383
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Subsurface distribution model of the “Post-Cardids” Neogene of Vojvodina (northern Serbia)
Marinović Đorđe, Rundić Ljupko, Knežević Slobodan. "Subsurface distribution model of the “Post-Cardids” Neogene of Vojvodina (northern Serbia)" in RCMNS Interim Colloquium 2016 Croatian Geological Society Limnogeology Workshop Lake – Basin – Evolution, Zagreb, Croatia:Croatian Geological Institute, Croatian Geological Society (2016): 38-39
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Influence of rock mass blastability on explosive energy distribution
Mitrović Stojan, Kričak Lazar, Negovanović Milanka, Janković Ivan, Zeković Dario. "Influence of rock mass blastability on explosive energy distribution" in Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting, :Taylor & Francis/CRC Press (2009): 249-255
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Geothermal capacity, efficiency and distribution of thermomineral springs in the municipality of Kuršumlija (Serbia)
Valjarević Aleksandar, Srećković-Batoćanin Danica, Valjarević Dragana, Matović Vesna. "Geothermal capacity, efficiency and distribution of thermomineral springs in the municipality of Kuršumlija (Serbia)" in Renewable and Sustainable Energy Reviews no. 92, Amsterdam, Neherlands:Elsevier (2018): 948-957. https://doi.org/doi.org/10.1016/j.rser.2018.05
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Spatial distribution of the Demir Kapija (FYR Macedonia) Ophiolite based on geomagnetic data
Petrović Dragana, Cvetkov Vesna, Cvetković Vladica. "Spatial distribution of the Demir Kapija (FYR Macedonia) Ophiolite based on geomagnetic data" in Tehnika special edition, :Savez inženjera i tehničara Srbije (2017): 43-48. https://doi.org/10.5937/tehnika1602215P
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Heavy metals and trace element accumulation and distribution in the organs of Phragmites australis (Cav.) Trin. eh Steud. 1841, Tisza River, Srebia
Štrbac Snežana, Jovančićević Branimir, Šajnović Aleksandra, Simonović Predrag, Dojčinović B., Grubin Kašanin Milica, Vasić Nebojša, Srdić D. (2012)Štrbac Snežana, Jovančićević Branimir, Šajnović Aleksandra, Simonović Predrag, Dojčinović B., Grubin Kašanin Milica, Vasić Nebojša, Srdić D.. "Heavy metals and trace element accumulation and distribution in the organs of Phragmites australis (Cav.) Trin. eh Steud. 1841, Tisza River, Srebia" in 9th International Symposium on Environmental Geochemistry, Aveiro, Portugal: (2012): 322-322
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Crystal structure of (Bi0.94Sb1.06)S3 and reconsideration of cation distribution over mixed sites in the bismuthinite-stibnite solid-solution series
Poleti Dejan, Karanović Ljiljana, Balić Žunić Tonči, Gržetić Ivan. "Crystal structure of (Bi0.94Sb1.06)S3 and reconsideration of cation distribution over mixed sites in the bismuthinite-stibnite solid-solution series" in Neues Jahrbuch für Mineralogie - Abhandlungen 189 no. 2, Johannesstr. 3A D-70176 Stuttgart, Germany: E. Schweizerbarsche Verlagsbuchhandlung (2012): 177-187. https://doi.org/10.1127/0077-7757/2012/0217
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Indexing of textual databases based on lexical resources: A case study for Serbian
In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...... for one of them. For indexing we used only three top level types: personal names, locations and organizations and their distribution is presented in Table 1. Table 1. Distribution of three top-level NEs: persons, locations and organizations NE type Frequency Average per doc % of the text person 11 ...
... database related to a particular document or project; 2. Lemmatizing and Part-Of-Speech tagging of all texts Di, where i = 1, . . . N and N is the size of text collection; 3. Recognizing NEs and assigning the chosen types to documents; 4. Selecting ungrammatical words Tij and calculating their frequencies ...
... [4] Finding and ranking of relevant documents on basis of the index is realized using the model of approximate matching, based on the frequency distribution of terms and documents. Two basic approaches are the vector space model, based on weight coefficients of terms, and the probabilistic model, based ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović. "Indexing of textual databases based on lexical resources: A case study for Serbian" in Semantic Keyword-based Search on Structured Data Sources : First COST Action IC1302 International KEYSTONE Conference, IKC 2015, Coimbra, Portugal, September 8-9, 2015. Revised Selected Papers, Springer (2015). https://doi.org/10.1007/978-3-319-27932-9_15
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A WordNet Ontology in Improving Searches of Digital Dialect Dictionary
In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...... information (DELAF) can be generated from it, and subsequently used in various NLP tasks. Serbian e-dictionaries of simple forms have reached a considerable size: they have more than 140,000 lemmas generating more than 5 million forms and 18,000 multi-word lemmas [5]. Dictionaries contain mostly standard language ...
... is MS SqlServer. Total ог 4,153 entries representing verbs, verbal nouns and their definitions were extracted, which represents about 20% of the size of the whole dictionary. Two examples of a table rows (containing ап entry and а definition) obtained in the first збер are: isabim ” (imp. isabi; ...
... dictionaries [10], the software for data visualization and presenting of linguistic dialectal maps [12], [11], the analysis of the geo- graphical distribution of a language and geographical information relevant for linguistic research [9], using of Semantic Web-based techniques for representing digital ...Miljana Mladenović, Ranka Stanković, Cvetana Krstev. "A WordNet Ontology in Improving Searches of Digital Dialect Dictionary" in New Trends in Databases and Information Systems: ADBIS 2017 Short Papers and Workshops - SW4CH (Semantic Web for Cultural Heritage) 767, Springer International Publishing (2017). https://doi.org/10.1007/978-3-319-67162-8_37
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Sinteza i karakterizacija nanoprahova u CeO2-Bi2O3 sistemu
Marija D. Prekajski (2014-04-04)Nanoprahovi kristalnih faza iz serije čvrstih rastvora u pseudo-binarnom sistemuCeO2-Bi2O3 sintetisani su primenom jednostavne i ekonomične samopropagirajućemetode na sobnoj temperaturi korišćenjem nitrata metala i natrijum-hidroksida kaopolaznih supstanci. Osim krajnjih članova niza, CeO2 i niskotemperaturne polimorfnemodifikacije α-Bi2O3, sintetisani su i čvrsti rastvori nominalnog sastava Ce1-xBixO2-δ,gde je x = 0,1; 0,2; 0,3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9. Rezultati proučavanja metodomrendgenske difraktometrije na polikristalnom materijalu i ramanske spektroskopskeanalize pokazali su da su sintetisani prahovi sa nižim sadržajem bizmuta (x = 0,1 ...nanostrukturni materijali, čvrsti rastvori, CeO2, Bi2O3, rendgenskadifraktometrija praha, Ritveldova metoda, mikrostrukrurna analizaMarija D. Prekajski. "Sinteza i karakterizacija nanoprahova u CeO2-Bi2O3 sistemu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-04-04)