Претрага
945 items
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Approach to operational mine planning: Case study Tamnava West
... the deposits on which exploitation is carried out are often, small in size, with poor quality and with complex structure and geometry, often in locations that have unfavorable infrastructure, or in regions with significant political instability. In the vast majority, mining projects, that ...
... software capable to cope with problems that are unique for specific open pit mine. Good example of custom made software is SUKU, software package developed on Faculty for Mining and Geology (Belgrade) with specialized tools for coal quality control management in a coal mines with continuous technology ...
... Currently, Tamnava West is a biggest coal open pit in Serbia, with capacity of 13 million tons of coal per year. The excavation technology of Tamnava West, is based on continuous mining equipment. Coal and interburden is excavated with 4 ECC systems (Bucketwheel Excavator - Conveyors-Crushing ...Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković. "Approach to operational mine planning: Case study Tamnava West" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2014). https://doi.org/10.5937/tehnika1406952S
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Mine ventilation system planning using genetic algorithms
The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methodsNikola Lilić, Ranka Stanković, Ivan Obradović. "Mine ventilation system planning using genetic algorithms" in 6. international symposium on mine planning and equipment selection, Ostrava (Czech Republic), 3-6 Sep 1997, A.A. Balkema, Rotterdam (Netherlands) (1997)
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Using English Baits to Catch Serbian Multi-Word Terminology
In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection... 1st component inflects; 3rd and 4th are a structure 1–4 in a case that agrees with a preposition 10 AxN4x AxN4x The 1st component inflects and agrees with a structure 5. 3,160 3,082 11 AxN6x AxN6x 1st inflects and agrees with a structure 5–8 in gen/instr 1,263 1,252 12 N8x Nx(S4)g(i) 1st inflects; remaining ...
... matched with the Serbian part of the aligned chunk. 3. The aligned chunks from Step 1 were filtered with the additional condition T (align.chunk) ∼ T (term.extract). 2,266 chunks were obtained, 2,120 of them matching different extracted MWTs. 4. The aligned chunks from the step 2 were filtered with the ...
... and a target language. We will denote an entry in this corpus with S(text.align) ↔ T (text.align); • A list of terms from the same domain in a source language (both single-word terms (SWTs) and MWTs). We will denote an entry in this list with S(term.list); • A list of MWTs extracted from the target part ...Cvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu. "Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08910-x
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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, ...... limestone layered in thick beds with bedding planes abundant with Inoceramus (Gajić 2007). The second member, allochemical limestone, occurs rarely, mainly in the form of beds or banks, and it is characterised by the texture of turbulent transport, partic- ularly with intervals of the Bouma Sequence ...
... or of low porosity, of very low water absorption, hard, and with high to moderately high values of compressive strength. The scope of use is established according to a comparison of statically analysed engi- neering properties with the technical requirements neces- sary for a suitable reference ...
... dimension stone production are Asia (50 % of world production in 2004) and Europe (~38 %) (Montani 2005). With 11.8 Mt exported in 2008, China is the leader in stone exportation. Along with Italy, India, Spain, Brazil, and Portugal, China sold more than 1 Mt of material on the international stone ...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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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... Figure 16. Interpretation of the model in the final state. Left-hand panel: top view with inferred fault structures. The area with dark and yellow sand outlines the basin where we applied sedimentation. Marker lines made with dark or yellow sand visually illustrate the translation of the moving part of the ...
... strike-slip). The right-hand panel of Fig. 17 shows that areas of dilatation >1 correspond to areas with extensional strain types (or transtensional) and areas with a dilatation <1 correspond to areas with shortening (or transpressional) strain types. D o w n lo a d e d fro m h ttp s ://a c a d ...
... refinement with respect to the resolution of the displacement fields as provided by the image correlation techniques. An efficient method to cope with the spatial resolution gradually becoming more inhomogeneous in deforming areas is to use unstructured meshes that are initially inhomogeneous, with increased ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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A bilingual digital library for academic and entrepreneurial knowledge management
A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...... store its content in a NoSQL-database, with a web tool to enable the use of rich information in the stored text collections. The library content originates from various bilingual sources, with all documents aligned at the sentence level and provided with metadata. In designing Bibliša special attention ...
... most cases with “elektronsko učenje” (43), but also with “e-učenje” (38), “e- obrazovanje” (2), “e-nastava” (2), and “učenje na daljinu” (6). Translation for “e- learning” occurs twice while “e-learning” appears 93 times in 84 concordances. In the next iteration we enhance our query with these new ...
... they address, and the financial and institutional support they get. Digital libraries with multilingual content can be further differentiated. Most of them offer various works in different languages with no intention of providing the same works in several languages. It does not come as a surprise ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić. "A bilingual digital library for academic and entrepreneurial knowledge management" in Proceeding of 10th International Forum on Knowledge Asset Dynamics — IFKAD 2015: Culture, Innovation and Entrepreneurship: connecting the knowledge dots, Bari, Italy, 10-12 June 2015, Bari : IFKAD (2015)
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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 ...... is to exploit the possibility of working simultaneously with two wordnets. Namely, as we have already pointed the majority of wordnets tend to be aligned with PWN. Thus, if the wordnet that is being developed is used in parallel with PWN, then the lexicographer might first attempt to identify ...
... other resources are also at hand, and that they can be exploited simultaneously with wordnet development, means that the lexicographer developing the wordnet can get more support in the tasks he/she is confronted with, than the majority of wordnet tools can offer. 3 http://www.illc.uva.nl/ ...
... wordnets + Synsets retrievement using various methods + Navigation by following hypernym/hyponym relations + Copy of synsets with translation support + Exchange of information with morphological dictionaries + Production of Intex/Unitex graphs + Consistency checks on wordnets Figure 1. The UML diagram ...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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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Unusually sluggish microemulsion system with water, toluene and a technical branched alkyl polyethoxylate
Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Snežana Zlatanović, Zoran Marković, Aleksandar Cvjetić (2015)Microemulsion systems with water, toluene and nonionic surfactants are interesting for application due to the excellent solvent properties of aromatic hydrocarbons. In this study, the pseudo-binary phase diagram (“fish-diagram”) of such a ternary system was investigated using a branched technical alkyl polyethoxylate. Lutensol ON 50 (i-C10E5) was considered a suitable surfactant. The system with technical branched i-C10E5 exhibits very long, and for compositions near optimum solubilization, i.e., the minimum content of surfactant needed for a bicontinuous microemulsion, extremely long ...микроемулзија, толуен, оксоалкохол етоксилат, термодинамичка стабилност, тернарни фазни дијаграми, дијаграми „fish“Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Snežana Zlatanović, Zoran Marković, Aleksandar Cvjetić. "Unusually sluggish microemulsion system with water, toluene and a technical branched alkyl polyethoxylate" in Chemical Industry and Chemical Engineering Quarterly (2015). https://doi.org/10.2298/CICEQ141012045I
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796
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Cytotoxic activity of tetradentate Schiff Base Copper(II) complexes
Istraživanje kompleksa bakra kao potencijalnih antikancerogenih agenasa nudi ohrabrujuće perspektive u odnosu na komplekse platine (II) računajući na smanjenu toksičnost, novi mehanizam delovanja, različit spektar aktivnosti i perspektivu neunakrsne rezistencije. Kompleksi Šifovih baza bakra(II) koji sadrže tetradentatne ligande acac2en tipa (acac2en (1); tfacac2en (3), acactfacacen (4), acacphacacen (6)) pokazali su važnu antioksidativnu aktivnost, visok potencijal za interakciju sa HSA i DNK, u prethodnim studijama. Zbog toga je bilo interesantno ispitati i uporediti potencijal antikancerogene aktivnosti in vitro, u odnosu ...Nevenka Gligorijević, Aleksandar Mijatović, Sandra Aranđelović, Rada Baošić . "Cytotoxic activity of tetradentate Schiff Base Copper(II) complexes" in The European Association for Cancer Research 2021 , eacr2021.org/sponsorship (2021)
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The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... characterized by a higher abundance of hopanoids than n-alkanes. This is consistent with low Tissue Preservation Index (TPI) and high Gelification Index (GI) (Kus et al., 2020), signifying an elevated pH in the mire with intense microbial activity that favours decomposition of wood tissues. In all samples ...
... associated with higher content of fernenes in Middle Miocene samples, which are absent in most of the Lower Miocene lignites. Although non-hopanoid triterpenoids played a subordinate role in the aliphatic fractions, they prevail in aromatic fractions of lignites. The result is consistent with the ...
... as by lower content of total hopenes (particularly those with double bond at 13(18)-position) and fernenes in the latter one. Mentioned results indicate decreasing contribution of Cupressaceae and emergent macrophytes, associated with increased input of Pinaceae, angiosperms and ferns to the ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
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An Approach to Development of Bilingual Lexical Resources
... have been entered, together with their Serbian synsets with translational equivalents {stub, stubac, kolona} and {kolumna, rubrika, novinski stubac}. When the user enters a synset, with its terms separated by a comma, the system first checks whether a synset with these terms already exists in ...
... Another reason is the assessment that a bilingual resource in tune with Bibliša’s specifics would substantially contribute to its performance. Hence, Biblimir was born. 3.1 The Logical Model The logical model of Biblimir, with its characteristic classes, their attributes, as well as relations ...
... term column. The diagram should be read from left to right, starting with: TermEntry, Term=column. The diagram shows that this term appears in two English synsets, in one of them as the only term {column} and in the other with a second term {column, newspaper column}. Each of these synsets has ...Stanković Ranka, Obradović Ivan, Trtovac Aleksandra. "An Approach to Development of Bilingual Lexical Resources" in Proceedings of the Fifth Balkan Conference in Informatics BCI 2012, Workshop on Computational Linguistics and Natural Language Processing of Balkan Languages – CLoBL 2012, September 2012, Novi Sad : BCI (2012)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules
I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac. "Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules" in Journal of Coordination Chemistry, Informa UK Limited (2023). https://doi.org/10.1080/00958972.2023.2256934
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Оцјена водопропусности понорске зоне Шуковићу (Цернићко поље) помоћу Лижоновог теста
One of the specificities of reservoirs forming in highly karstified terrains is reflected in the wide range of unknowns, specifically during reservoir formation, filling and operation. Unfortunately, despite complex research, many reservoirs constructed in karst terrains have problems with water losses from the reservoir to other aquifers due to ponor and ponor zones which are a common in the karst of Eastern Herzegovina. One of such zones is Šuković ponor located in the southern part of the Cerničko polje ...Петар Војновић, Саша Милановић, Љиљана Васић. "Оцјена водопропусности понорске зоне Шуковићу (Цернићко поље) помоћу Лижоновог теста " in Мултидисциплинарна конференција “Kарст 2022 - Значај, стање и перспективе коришћења и заштите ресурса у карсту", Српска академија наука и уметности (2022)
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In vitro and in silico study of the biological activity of tetradentate Schiff base copper(II) complexes with ethylenediamine-bridge
Aleksandar Mijatović, Nevenka Gligorijević, Dušan Ćoćić, Snežana Spasić, Aleksandar Lolić, Sandra Aranđelović, Milan Nikolić, Rada Baošić (2023)The biological activity of six structurally similar tetradentate Schiff base copper(II) complexes, namely [Cu(ethylenediamine-bis-acetylacetonate)] (CuAA) and five derivatives where two methyl groups are replaced by phenyl, (CuPP), CF3 (CuTT) or by mixed groups CH3/CF3 (CuAT), Ph/CF3 (CuPT), and Ph/CH3 (CuAP) has been investigated. The set of antioxidant assays was performed, and the results were expressed as IC50 and EC50 values. The series of complexes showed interesting bioactivity and were investigated for the determination of antioxidant, antifungal, antimicrobial, and cytotoxic ...Aleksandar Mijatović, Nevenka Gligorijević, Dušan Ćoćić, Snežana Spasić, Aleksandar Lolić, Sandra Aranđelović, Milan Nikolić, Rada Baošić. "In vitro and in silico study of the biological activity of tetradentate Schiff base copper(II) complexes with ethylenediamine-bridge" in Journal of Inorganic Biochemistry, Elsevier BV (2023). https://doi.org/10.1016/j.jinorgbio.2023.112224
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Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy
... followed with smaller amounts of quartz, feldspar and iron oxy/hydroxides and large calcite grains, which is consistent with the previously reported data (MILOŠEVIĆ et al., 2019). Sample 1 was prepared by the traditional coiling method on a hand rotated wheel, while sample 2 was made with the ...
... Ground mass is a clay mixture uniformly distributed with larger, mostly rounded pores, consistent with microscopical observations. Sample 2 has a fluid- like structure where both groundmass and pores have a directional appearance, consistent with previous observations, and a slightly higher amount ...
... Representative List of the Intangible Cultural Heritage of Humanity. In technological terms, it is a unique phenomenon that actively coexists with discovery of new techniques and production processes. This brings to a rise in imitations of this pottery manufacture due to its enlarged popularity ...Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana. "Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy" in 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary, Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary (2021)
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An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction
Dejan Ćebić, Nebojša Ralević, Marina Marčeta. "An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction" in Mathematical Communications (2020)