Претрага
412 items
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Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability
Marija Živković, Dejan Ivezić (2021)Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија... methodology can be applied on the levels of city, region, or a state, taking into account specifics of heat and electricity generation and the structure of pri- mary energy supply. In addition, the methodology provides a possibility for the estimation of the technical potential of wastewater heat ...
... heating companies 2018) (PU Beogradskeelektrane 2018). Energy consumption in district heating systems in Serbia in 2017 was 26,322.8 TJ with the structure presented in Fig. 4. The auxiliary electricity consumption was 9321 TJ (Statistical Office of the Republic of Serbia 2017). The fuel with the highest ...
... of the newest and most contemporary wastewater plant (in the city of Šabac) was selected in this paper, for the evaluation of sewage Fig. 4 Structure of fuel consumption in district heating systems in Serbia in 2017 Table 1 Average values of the key performance indicators of the district heating ...Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage
... heritage, inscribed in the National register of ICH and as geoheritage in Serbia as well. The analysis of the phase, mineral composition and structure of the clay body was performed by optical microscopy on cross-sections perpendicular to the vessel walls. In order to confirm the presence and ...Maja Milošević, Biljana Đorđević, Alena Zdravković . "Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage" in 9th International Conference Mineralogy and Museums, Sofia, Bulgaria, Earth and Man National Museum and Bulgarian Mineralogical Society (2021)
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Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... y, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia We studied the influence of Ag doping on the crystal structure and magnetic properties of CuO nanopowders. For the synthesis of nanoparticles of copper-silver oxides solid solutions. with the composition ...
... re-heating of the sample. The Rietveld method for fitting refinement procedure was performed which showed the incorporation of Ag** ions in the CuO crystal lattice, where they substitute Cuž* ions. SQUID magnetometer was used for investigation of magnetic behavior of synthesized materials in temperature ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
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Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... W. X-ray structure refinements of tremolite at 140 and 295 K: Crystal chemistry and petrologic implications. Am. Mineral. 1996, 81, 1117–1125. [CrossRef] Gatta, D.G.; Merlini, M.; Valdrč, G.; Liermann, H.-P.; Nenert, G.; Rothkirch, A.; Kahlenberg, V.; Pavese, A. On the crystal structure and com ...
... when their structures are degraded by firing, in the kiln. Inosilicates are built with [SiOx]"- entities forming, long chains. The amphibole structure is composed of the [SiOi(OH)]" anion (i.e., four of the above entities, but also hydroxylated). The Raman spectrum of these phases, characterized ...
... (Figure 7 [32])). The broadening indicates a distribution of Si-O-Si bond lengths that could have arisen from the degradation of the pristine structure upon heating. The large number of phases identified by XRPD and the variety of Raman spectra observed are consistent with a firing taking place ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
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Automatic construction of a morphological dictionary of multi-word units
The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion... grammatical categories. It should be noted that MWUs sharing the same inflectional class (or super- class) do not necessarily have the same syntactic structure and vice versa. For instance, film u boji ‘color movie’ and bolest ludih krava ‘mad cows disease’ share the same class nc n4x, although the first ...
... was offered or none of the solutions was classified as a) or b). In either case, the reason was that the strategy failed to cover a particular MWU structure (in 52 cases, or 20% of all failures) or a MWU com- ponent that inflects was not in the dictionary of simple words (in 255 cases, or 80% of all failures) ...
... Google. Again, Unitex and Multiflex are used for inflection. However, WS4QE goes one step further: for free phrases supplied as key-words having a structure covered by a MWU inflectional class, the tool uses our strategy and acts upon the first offered solution, which is the correct one in most cases. ...Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić. "Automatic construction of a morphological dictionary of multi-word units" in Lecture Notes in Computer Science 6233, Advances in Natural Language Processing, Proceedings of the 7thInternational Conference on NLP, IceTAL 2010, Reykjavik, Iceland, August 2010, Springer (2010): 226-237. https://doi.org/10.1007/978-3-642-14770-8_26
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... for the reconstruction of tectonic motion and the arrangement of palaeooceanic basins and continental blocks. Due to the highly complicated structure of this territory, each palaeontological da tum from radiolarite deposits and from carbonate clasts of the intercalated turbidites is highly important ...
... the Meso- zoic radiolarites. Mesozoic radiolarian biochronology is essential for the understanding of the palaeogeography and overall tectonic structure of the Dinarides. There are numerous data on siliceous sedimentary rocks associated with the ophiolite belts in the Dina rides, Albanides and ...
... area is situated in SW Serbia, in Ljubiš Village on the eastern flanks of Mt. Zlatibor. The wider area is characterized by a rather complicated structure. According to SCHMID et al. (2008), it comprises the Adria-derived Drina-Ivanjica (DIU) and East Bosnian-Durmitor Units (EBDU), with the West Vardar ...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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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 ...... questions have often been raised: are concepts linguistically independent or not, are the lexicalization patterns for concepts universal, is the structure of PWN valid for other languages as well, is the set of semantic relations built in PWN sufficient for all languages [15]. Although the work ...
... and add relations in the wordnets and to formulate queries. This tool also makes it possible to visualize the semantic relations as a tree- structure that can directly be edited. Trees and sub-trees can be expanded, shrunk, and stored as distinct sets of synsets, which can then be separately ...
... simultaneously. Exploiting the synergy of various resources, this tool proved very useful in many HLT tasks, including wordnet development. 3.2 Structure WS4LR is composed of several modules which perform the following main functions (Figure 1): - development and refinement of wordnets, where ...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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Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181
Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)... Disaster Management College Shiho Asano, Forestry and Forest Products Research Institute Has Baator, Asia Air Survey Co., Ltd. Organizational Structure of the Fifth World Landslide Forum ix Hiromu Daimaru, Forestry and Forest Products Research Institute Khang Dang, International Consortium on ...
... Hiroshi Yagi, Yamagata University Hiromitsu Yamagishi, Shin Engineering Consultants Co., Ltd. Maki Yano, OSASI Technos Inc. x Organizational Structure of the Fifth World Landslide Forum Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181 Biljana Abolmasov, Uroš ...
... Monitoring Activities on Landslide … 227 UAV Imaging and Mapping Using of small Unmanned Aerial Vechiles (UAV) systems and its implementation in Structure from Motion (SfM) photogrammetry is found very practical for landslide surface modeling and monitoring. Many advantages of UAV-based remote sensing ...Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić. "Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60196-6_14
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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)
... Early Alpine deformations in the red beds within the Poletinci-Skrino fault zone. 2. Structure and deformations in the northern parts of the Vlahina block. Geol Balc 11:101—126 Zagorchev IS (1984) Pre-Alpine structure of South-west Bulgaria. In: Zagorchev IS, Mankov S, Bozkov I (eds) Problems of the ...
... Robertson et al. 1991; Ricou 1994; Schmid et al. 2008; Stampfli and Hochard 2009). Therefore, to reveal the tectonic evolution of these intra-Alpine crystal- line units, their complex structural patterns need to be stud- led in detail together with determination of age of their pro- toliths and timing ...
... (Stampfli et al. 2013; Antić et al. 2015b). Variscan age of the peak metamorphism and high-strain deformation has been reported for a number of crystal- line units in the Carpatho-Balkanide orogen (Dimitrijević 1958; Dallmeyer et al. 1998; Ilic et al. 2005; Carrigan et al. 2005; Karamata 2006) ...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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WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)... remediation and recultivation. The geodatabase model of abandoned mines includes the name, geolocation, administrative affiliation, size, geological structure, history, status and condition of recultivation, implemented measures for remediation and recultivation with supporting multimedia records (photographs) ...
... Vrdnik, Serbia 2 The next section presents the methodological approach to development of the geodatabase, and a description of logical structure and physical database implementation. Section 3 outlines the development environment and usage of the system components, including the handling ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina" in Proceedings of the 5th International Symposium Mining And Environmental Protection,June 10-13,2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)
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Application of Expansive Mortars for the Formation of Artificial Screens During Blasting in Urban Areas
During construction of buildings in urban areas, sometimes there is a need to blast solid rock mass in the immediate vicinity of the surrounding buildings. In that case, the aim is not only to increase the efficiency of blasting, but also to reduce harmful effects of ground vibration induced by blasting. At the same time, it is very important to protect the buildings located in the safe zone from the blast site as well as remaining rock mass around ...Milanka Negovanović, Lazar Kričak, Stefan Milanović, Nikola Simić, Jelena Majstorović. "Application of Expansive Mortars for the Formation of Artificial Screens During Blasting in Urban Areas" in 31st International Conference Ecological Truth & Environmental Research-EcoTER'24, Sokobanja, 18-21. jun 2024, Bor : Tehnički fakultet u Boru (2024)
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics
Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić. "Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics" in Minerals, MDPI AG (2024). https://doi.org/10.3390/min14050511
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... members make up the upper levels of sequences which are usually organized into delicate para- llel lamination composed of mica grains or apparently structure- less intervals. 3.2. Unit B (interval: 2.10 to ~ 15 m of the column) A gradual change of sedimentary characteristics occurs above the 2.10 m ...
... structures. The pa- rallel lamination in the lower levels of beds in unit D locally con- tain plant detritus. In one case (bed D7), the internal structure is composed of upward coarsening and upward fining intervals sometimes separated by intrasequence erosional surfaces (Fig. 7c). 3.5 Palaeontological ...
... which could be considered to belong to the distal part of the tur- bidite system (Fig. 3., KRSTIĆ, 1984), the minute variations in grain size and structure would be best observed in thin-section. Out of the dozen rock samples collected, only one thin-section (sample from bed D7, Fig. 7c) fulfills the ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian
Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење... sentence; and since examples should help the understanding of the definition, they must be easy to understand – which means that their syntactic structure should be simple and their lexis not too difficult and uncommon. Informativeness, typicality with naturalness, and intelligibility are basic criteria ...
... as special words, abbreviations or punctuation marks) used to introduce specific information. This analysis enabled the recognition of the entry structure: headword group, grammatical data, etymology, lexical units (senses), multiword expressions and proverbs (if any). Each lexical unit may contain ...
... the level of lexical units (senses), which will enable the reuse of dictionary content that already exists in the database. The fine-grained structure of the database enabled the creation of a dataset of examples supported by a set of related information: headword/lexical unit the example is related ...Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković. "SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian" in Electronic lexicography in the 21st century. Proceedings of the eLex 2019 conference , Lexical Computing CZ, s.r.o. (2019)
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056
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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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Building learning capacity by blending different sources of knowledge
... knowledge from various sources, throughout their education and professional career. 3 Conceptual design of the BAEKTEL network The basic structure of BAEKTEL network is illustrated in Figure 1. The initial framework is conceived as a network of six nodes at WB universities, namely University ...
... environment this language support system will also improve the search and browse functions of BMP. The BMP language support system, whose structure is outlined in Figure 3, is based on electronic language resources, namely, lexical resources, textual resources and grammars. The simplest m ...
... (UBFMG) within the GeolISS project1. Thesauruses are complex terminological resources, usually related to a specific domain, with a semantic structure formed by semantic relations between terms, and thus in some of their features resembling wordnets. RudOnto is another complex terminological ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić. "Building learning capacity by blending different sources of knowledge" in International Journal of Learning and Intellectual Capital (2016). https://doi.org/10.1504/IJLIC.2016.075698