Претрага
328 items
-
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
-
State and perspective of individual household heating in Serbia: A survey-based study
This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...Boban Pavlović, Dejan Ivezić, Marija Živković. "State and perspective of individual household heating in Serbia: A survey-based study" in Energy and Buildings, Elsevier BV (2021). https://doi.org/10.1016/j.enbuild.2021.111128
-
BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... 258, 123888. [CrossRet] Majid, E.; Rauf, J.; Ata, S.; Bibi, I.; Yameen, M.; Iqbal, M. Hydrothermal Synthesis of Zinc Doped Nickel Ferrites: Evaluation of Structural, Magnetic and Dielectric Properties. Z. Fiir Phys. Chemie 2019, 233, 1411-1430. [CrossRetf] Rodriguez-Rodriguez, A.A.; Moreno-Trejo ...
... ingjuez, M. Spinel-type ferrite nanoparticles: Synthesis by the oil-in-water microemulsion reaction method and photocatalytic water-splitting, evaluation. f. J. Hydrogen Energy 2019, 44, 12421–12429. [CrossRef] Atiq, S.; Majeed, M.; Ahmad, A.; Abbas, S.K.; Saleem, M.; Riaz, S.; Naseem, S. Synthesis ...
... Jeremić, D.; Milenković, M.R.; Radosavljević, J.; Vulić, P.; Pavlović, V.; Manojlović, D.; Nikolić, A.S. Synthesis, characterization and in vitro evaluation of divalent ion release from stable NiFe»O+a, ZnFe>»Ou and core-shell ZnFe)OaeNiFe»Oa nanoparticles. Ceram. Int. 2020, 46, 3528-3533. [CrossRet] ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
-
The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
-
Vebran Web Services for Corpus Query Expansion
Ranka Stanković, Miloš Utvić (2020)U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.... Enhanced Search of Multilingual Digital Li- braries of E-Journals”. In Proceedings of the Eighth International Confer- ence on Language Resources and Evaluation (LREC),(Istanbul, Turkey, 2012, 1710–1717 Stanković, Ranka. “Modeli ekspanzije upita nad tekstuelnim resursima”. Phdthesis, Univerzitet u Beogradu ...
... Dictionaries - from File System to lemon Based Lexical Database”. In Proceedings of the Eleventh International Conference on Language Re- sources and Evaluation (LREC 2018), McCrae, J. P., C. Chiarcos, T. De- clerck, J. Gracia and B. Klimek, 48–56. Paris, France: European Language Resources Association (ELRA) ...Ranka Stanković, Miloš Utvić. "Vebran Web Services for Corpus Query Expansion" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.5
-
Употреба веб платформе Омека за дигиталне библиотеке из домена рударства
У овом раду биће представљена Омека, веб платформа за приказивање дигиталних колекциjа и систем за управљање њиховим садржаjем. Њену примену у области техничких наука, а конкретно у области рударства, приказаћемо на примеру дигиталне библиотеке ROmeka@RGF. За Омеку смо се определили првенствено због чињенице да jе jедноставна за коришћење, има обимну пратећу документациjу и не захтева уско специфичне информатичке вештине што jе чини приступачном за већину корисника, а нарочито за рударске инжењере, коjима jе ова дигитална библиотека првенствено намењена. Документа ...... enhanced search of multilingual digital li- braries of e-journals”. In Proceedings of the Eighth International Confe- rence on Language Resources and Evaluation (LREC), Istanbul, Turkey, 1710–1717, 2012. http://www.lrec-conf.org/proceedings/lrec2012/ pdf/375_Paper.pdf Stanković, Ranka, Cvetana Krstev, Biljana ...
... “Rule-based Automatic Multi-Word Term Extraction and Lemmatization”. In Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC, 507–514, 2016. http://www. lrec-conf.org/proceedings/lrec2016/pdf/1033_Paper.pdf Stanković, Ranka М. “Modeli ekspanzije upita nad tekstuelnim ...Александра Томашевић, Биљана Лазић, Далибор Воркапић, Михаило Шкорић, Љиљана Колоња. "Употреба веб платформе Омека за дигиталне библиотеке из домена рударства" in Инфотека, Филолошки факултет, Универзитет у Београду; Универзитетска библиотека „Светозар Марковић“; Заједница библиотека универзитета у Србији (2017)
-
The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... sector of the Republic of Serbia and infrastructure development plan; Section 4 demonstrates the application of the proposed methodology for the evaluation of the energy security assessment for the natural gas sector in Serbia; Section 5 is reserved for results of the case study; Section 6 provides ...
... are values of linguistic variable or linguistic value. In that case, linguistic modifiers are very, many, etc. The fuzzy–AHP synthesis model for evaluation of energy security assessment of energy development scenarios is explained in detail in this section. 2.1. Indicator Structure An integral analysis ...
... for the purpose of analyzing the partial indicators of administrative applicability (A1) and indirect environmental effect (E3) to conduct expert evaluation. Analysts whose area of business interest is closely related to the energy sector of the Republic of Serbia were interviewed. The questionnaire contained ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
-
Preliminary regional landslide susceptibility assessment using limited data
Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...... the assumptions made to set up the model design and the selection of the appropriate performance metrics (PETSCHKO et al. 2014). Furthermore, the evaluation of reliability consists of changing some of the model integral parts and obtaining numerous variations of the outcome susceptibility maps, up ...
... lity Mapping on the Peloponnese Peninsula, Greece.– Geoscienc- es, 4, 176–190. doi:10.3390/geosciences4030176 CHANG, H. & KIM, N.K. (2004): The evaluation and the sensitivity analysis of GIS- based landslide susceptibility models.– Geosciences Journal, 8/4, 415–423. doi: 10.1007/BF02910477 CONSTANTIN ...
... Sciences, 19, 668–676. doi: 10.1016/j.sbspro.2011.05. 184 JOVANOVSKI, M., ABOLMASOV, B. & PESHEVSKI, I. (2013a): Analyses of Landslide Hazard Evaluation Factors Using Polynomial Interpolation.− In: MAR- GOTTINI, C., CANUTI, P. & SASSA, K. (eds.): Landslide Science and Practice. Vol.1., Landslide ...Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska. "Preliminary regional landslide susceptibility assessment using limited data" in Geologica Croatica , Croatian Geological Society (2019). https://doi.org/10.4154/gc.2019.03
-
Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
-
An Integrated Environment for Management and Exploitation of Linguistic Resources
Ranka Stanković, Ivan Obradović (2009)... Vitas, I. Obradović, “WS4LR: A Worksta- tion for Lexical Resources”, Proceedings of the 5th International Con- ference on Language Resources and Evaluation, LREC 2006, Genoa, Italy, pp. 1692-1697, 2006. [7] M. Silberztein, “ INTEX: a Finite State Transducer toolbox”, in Theo- retical Computer Science ...
... Tools to Improve the Performance of Web Search Engines”, in Proceedings of the Sixth Interantional Conference on Language Resources and Evaluation (LREC'08), Marrakech, Morocco, European Language Resources Association (ELRA), May 2008. [13] R. Stanković “Improvement of geodatabase queries ...Ranka Stanković, Ivan Obradović. "An Integrated Environment for Management and Exploitation of Linguistic Resources" in Proceedings of the International Multiconference on Computer Science and Information Technology, Computational Linguistics – Applications Workshop (CLA09), Mrągowo, Poland, October 2009, Piscataway : IEEE (2009)
-
Some models for determination of parameters of the soil oscillation law during blasting operations
... on the reduced distance R. In order to assess the degree of connection between v and R, we have used the curved line dependency index ρ [9]. The evaluation of the relationship degree of two variables [5] to values of the curved line dependency index ρ is given in the following survey: ‚ 0.0 < ρ < 0 ...
... differences are one after another ε1, ε2, ... εN, then it is: S “ d ε2 1 ` ε2 2 ` . . . ` ε2 N N (27) According to this criterion, for the evaluation of convenience of the obtained functional correlation, the following relations are valid: Energies 2016, 9, 617 7 of 15 ‚ if |εmax| ě 3S, the ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
-
The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
-
Development Of The Serbian Geological Resources Portal
... North-Western Serbia 2007-2011, FILIPOVIĆ, I. & JOVANOVIĆ, D. 2011. FMG: Synthesis of geological research of jewelry mineral resources of Serbia with the evaluation of potential 2010-2012, MILADINOVIĆ, Z. 10 Projects funded by MEMSP. FMG: Geological bibliography of the Republic of Serbia the ranking of search ...Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić. "Development Of The Serbian Geological Resources Portal" in Proceedings of the 17th Meeting of the Association of European Geological Societies, Belgrade, Serbia : The Serbian Geological Society (2011)
-
Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... http://dx.doi.org/10.1007/s00706-013-1044-1 (L = heterocyclic nitrogen ligand) [22]. In particular just two compounds are undergoing clinical evaluation today, the indazole (ind) derivative cytotoxic to cancer cells [Hind]- trans-[RuCl4(ind)2], known as KP1019, and the imidazole (im) derivative ...
... literature [52]. The stability constants of hydrolytic complexes of [Ru(trpy)(bpy)H2O] 2? ion were determined in separate experiments. Thus, in evaluation of three-component equilibria (c), the binary models (a) and (b) were consid- ered as known. The concentration stability constants of the complexes ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
-
Open Educational Resources in Serbia
... education. Namely, in Article 46a of this Law, a Center for Educational Technology is envisaged within the Institute for Education Quality and Evaluation. With the competence of this Center, Item 4 stipulates that it “provides professional support, develops a methodology and instruments for the ...
... partner university for Tempus project 544482-TEMPUS-1-2013-1-IT-TEMPUS-JPHES. Participant in four Erasmus mobilities. Member of Commission for self-evaluation at faculty. Member of the organizational committee of several conferences. Participant in national and international project and project coordinator ...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
-
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... errors (precisely, unknown words) may be reduced by 5% to up to almost 90%, which depends, naturally, on the initial number of errors A thorough evaluation results for the system for diacritic restoration was presented in details in (Krstev et al., 2018). The authors showed that on the average the precision ...
... (1957): 38–55 Neme, Alexis Amid and Sébastien Paumier. “Restoring Arabic vowels through omission-tolerant dictionary lookup”. Language Resources and Evaluation (2019): 1–65 Infotheca Vol. 19, No. 2, December 2019 79 Krstev C., Stanković R., “Old or new, we repair . . . ”, pp. 61–80 Ostrogonac, Stevan ...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
-
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, ...... Vitas D., Obradović I., “WS4LR: A Workstation for Lexical Resources”, Proc. of the 5th International Conference on Language Resources and Evaluation, LREC 2006, Genoa, Italy, May 2006, pp. 1692- 1697. [7] Stanković R. (2008) „Improvement of geodatabase queries within GeolISS“, Pregled Nacionalnog ...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)
-
Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom
... user-friendly, enable students to fill in a ready-made form and allow the professor to check, give feedback and mark the answers. During the evaluation, the professor may also select the answers which are to be included into a central terminology database provided that they satisfy previously ...Lidija Beko, Ivan Obradović, Ranka Stanković. "Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom" in Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, May, 22-24, 2015, Niš, Serbia, Faculty of Electronic Engineering, University of Niš, Niš : Faculty of Electronic Engineering (2015)
-
Увођење доменских и семантичких маркера за област рударства у српске електронске речнике
... “Rule-based Automatic Multi-word Term Extraction and Lemmatization”, In: Proc. of the 10th International Confer- ence on Language Resources and Evaluation, LREC 2016, Portorož, Slov- enia, pp. 23–28. Крстев и др. 2016: Cvetana Krstev, Anđelka Zečević, Duško Vitas, and Tita Kyriacopoulou, “NERosettafor ...Иван Обрадовић, Александра Томашевић, Ранка Станковић, Биљана Лазић. "Увођење доменских и семантичких маркера за област рударства у српске електронске речнике" in Научни састанак слависта у Вукове дане - Српски језик и његови ресурси: теорија, опис и примене, Београд : Међународни славистички центар на Филолошком факултету, Филолошки факултет (2017). https://doi.org/10.18485/msc.2017.46.3.ch10
-
Mogućnost infracrvene termografije pri detekciji štetnih gasova
Curenje pojedinih gasova je opasnost koja može da izazove velike nezgode. Često je praćeno požarima i eksplozijama koji za posledicu mogu da imaju kako ljudske povrede, tako i štetan uticaj na ekologiju i ekonomiju. Da bi se izbegle takve situacije, preventivna inspekcija je od presudne važnosti. Curenje većine gasova se ne može uočiti golim okom a za otkrivanje i procenu stepena curenja može se koristiti tehnologija toplotnog snimanja (infracrvena termografija). U datom radu predstavljene su mogućnosti i ograničenja primene ...Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković. "Mogućnost infracrvene termografije pri detekciji štetnih gasova" in VIII Memorijalni naučni skup iz zaštite životne sredine "Docent dr Milena Dalmacija", Novi Sad, 01-02. april 2021., Prirodno-matematički fakultet (2021)