Претрага
613 items
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Coherent oscillations in minimal neural network of excitable systems induced by time delay
Vasović Nebojša, Burić Nikola, Grozdanović Ines, Todorović Kristina, Samčović Andreja. "Coherent oscillations in minimal neural network of excitable systems induced by time delay" in Proceedings of 11th Symposium on Neural Network Appliciations in electrical Engineering, (ELEVENTH SYMPOSIUM ON NEURAL NETWORK APPLICATIONS IN ELECTRICAL ENGINEERING (NEUREL 2012)), Beograd:Faculy of Electrical Engineering (2012): 35-39. https://doi.org/10.1109/NEUREL.2012.6419957
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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.... al., 2004). More than 22,000 synsets built by app. 28,000 literals are Princeton WordNet (PWN), except for 532 Balkan specific concepts that are connected with other Balkan languages, and 155 Serbian specific concepts that remain unconnected with other languages. Since the core of wordnets developed ...
... electronic dictionaries (Unitex DELA format); 7 https://unitexgramlab.org/ 102 Infotheca Vol. 19, No. 2, December 2019 Scientific paper – Semantic network WordNet for Serbian; – Terminological databases Termi, RudOnto, GeolISS. 3.1 Serbian morphological resources The system of morphological electronic ...
... as the word forms semantically related to them (synonyms, antonyms, hyperonyms, etc.) where semantic relations are available through the semantic network (wordnet). The emphasis in this paper is on morpho- logical query expansion supported by Vebran web services. Services consult external lexical resources ...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
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Improvement of geodatabase queries within GeolISS
Ranka Stanković (2008)... location. For example, the locations of wells, boreholes, structural measurement or stratification. − One-dimensional lines or polylines are used for linear features such as boundaries, tectonic structures, faults, fold access, dyke or vein. − Two-dimensional polygons are used for geographical features ...
... wordnet is composed of synsets, or sets of synonymous words representing a concept, with basic semantic relations between them forming a semantic network. Each synset word or “literal” is denoted by a “literal string” followed by a “sense tag” which represents the specific sense of the literal string ...
... Geologic information system of Serbia” u časopisu Zapisnici Srpskog geološkog društva, Srpsko geološko društvo, Beograd. [7] ESRI Developer network (http://edn.esri.com) [8] Vitas D., G. Pavlović-Lažetić, C. Krstev, Lj. Popović, I. Obradović (2003): „Processing Serbian Written Texts: An Overview ...Ranka Stanković. "Improvement of geodatabase queries within GeolISS" in Review of the National Center for Digitization, Beograd : Faculty of Mathematics, Belgrade (2008)
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Infotheca (Q25460443) in Wikidata
Ranka Stanković, Lazar Davidović (2021)Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.... the idea of making as much quality content as possible available on Wikipedia (Popović, Ševkušić, and Stakić 2015). Wikiadata, as an open data network was used by Andonovski (Андоновски 2020) to describe lan- guage resources, namely, novels forming part of the Serbian-German literary corpus (Andonovski ...
... we will present an example of integra- tion of Wikidata with digital libraries and ex- ternal systems, as well as the potential for speeding up the process of data preparation and entry using the articles published in In- fotheca, Journal for Digital Humanities as an example. KEYWORDS: Semantic Web, Open ...
... paper, we will present an example of integration of Wikidata with digital libraries and external systems, as well as the potential for speeding up the process of data preparation and entry using the articles published in In- fotheca, Journal for Digital Humanities as an example. Semantic web is an extension ...Ranka Stanković, Lazar Davidović. "Infotheca (Q25460443) in Wikidata" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.5
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Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala
Miodrag Čelebić (2024)Izbor optimalne mehanizacije u diskontinualnom sistemu transporta je jedna od najvažnijih odluka koju treba donijeti prilikom projektovanja površinskih kopova. Pri izboru optimalne mehanizacije, uticaj ima veliki broj faktora, kako prirodnih – geoloških i ekoloških, tako i tehničkih, ekonomskih i socijanih. Neki od njih se mogu izraziti numerički, u određenim mijernim jedinicama, a neki opisno, lingvističkim varijablama, shodno uslovima koji vladaju na rudnim ležištima, a koje karakterišu visok stepen neizvjesnosti i neodređenosti kako prilikom istraživanja, tako i tokom procesa eksploatacije ...izbor mehanizacije, tehnologija eksploatacije, diskontinualani sistem, ekspertsko odlučivanje, lingvističke varijable, MCDM, FAHPMiodrag Čelebić. Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala, Beograd : [M. Čelebić], 2024
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Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types
Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac. "Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types" in Underground mining engineering, Рударско - геолошки факултет - Београд (2019)
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Synthesis of MnCo2O4 nanoparticles as modifiers for simultaneous determination of Pb(II) and Cd(II)
The porous spinel oxide nanoparticles, MnCo2O4, were synthesized by citrate gel combustion technique. Morphology, crystallinity and Co/Mn content of modified electrode was characterized and determined by Fourier transform infra-red spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction pattern analysis (XRD), simultaneous thermogravimetry and differential thermal analysis (TG/DTA). Nanoparticles were used for modification of glassy carbon electrode (GCE) and new sensor was applied for simultaneous determination of Pb(II) and Cd(II) ions in water samples with the ...Vesna Antunović, Marija Ilić, Rada Baošić, Dijana Jelić, Aleksandar Lolić. "Synthesis of MnCo2O4 nanoparticles as modifiers for simultaneous determination of Pb(II) and Cd(II)" in PLOS ONE (2019). https://doi.org/10.1371/journal.pone.0210904
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Coherent oscillations in minimal neural network of excitable systems induced by time delay
Vasović Nebojša, Burić Nikola, Grozdanović Ines, Todorović Kristina. "Coherent oscillations in minimal neural network of excitable systems induced by time delay" in 11th Symposium on Neural Network Applications in electrical Engineering, Beograd:Faculty of Electrical Engineering (2012)
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Проширивање мреже пловних путева Републике Србије у функцији одбране земље
Мрежу пловних путева Републике Србије чини мрежа међународних и међудржавних пловних путева. Међународне пловне путеве чине реке Дунав, Сава, Колубара, Дрина, Канал Дунав-Тиса-Дунав (Д-Т-Д) „Нови Сад – Савино село“ и Беочински рукавац – канал, док међудржавни пловни пут на коме важи међународни режим пловидбе чини река Тиса. Поред наведених пловних путева који већим делом обухватају територију Аутономне покрајине Војводине, Република Србија има потенцијал проширења мреже пловних путева и у централном делу Србије пре свега у Поморављу. Проширењем мреже пловних ...Милан Кресојевић, Весна Ристић Вакањац, Драган Трифковић. "Проширивање мреже пловних путева Републике Србије у функцији одбране земље" in 50. симпозијум о операционим истраживањима - SYM-OP-IS 2023, Тара, 18–21. септембар 2023., Београд : Медија центар „Одбрана” (2023)
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Business Models for Small-scale Biomass Projects Development
Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...... involvement of local people in organization and management of complete process of concept design and concept implementation is the common characteristic of all successful cases. However, the unique solution for involving of locals in the process does not exist. Considering the proposed solution for more intensive ...
... instead of a refurbishment of the existing oil boilers is planned. The total annual space heat demand was assumed to be around 8,842 MWh/a. The total connected consumer peak load is 1.4 MW. For the existing DH grid with a trench length of 2,900 m, losses of 25% of heat produced were assumed after reconnection ...
... the local public utility company. This business model is not very attractive for the motivation of local people to connect or reconnect to the DH network. The price of distributed heat is determined by PUC, and biomass supply from local sources is not guaranteed. For the realization of this project it ...Dejan Ivezić, Miodrag Gluščević, Marija Živković. "Business Models for Small-scale Biomass Projects Development" in 19th International Conference on Thermal Science and Engineering of Serbia, Niš : Faculty of Mechanical Engineering (2019)
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Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules
The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analizaSvetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón . "Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules" in Bulletin of Engineering Geology and the Environment , Springer (2024). https://doi.org/10.1007/s10064-024-03667-0
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Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... contour, public and private objects, lakes), with the line objects (roads, rivers, channels, conveyor belts, railroads, electricity transmission network) and point objects (boreholes, equipment) on top [Stanković et al., 2008]. All objects are georeferenced, that is, entered to an appropriate coordinate ...
... that is, a geodatabase, for open pit mines. The geodatabase dubbed OpmGIS has been modeled using UML and CASE tools that support the development process. The class model of the OpmGIS geodatabase has been developed in the MS Visio tool. The logical model of the geodatabase was transformed to the physical ...
... database model using the Unified Modeling Language (UML) and Computer-Aided Software Engineering (CASE) tools, which support the geodatabase development process. The first two approaches to geodatabase creation are suitable when smaller geodatabases or geodatabases of a simple structure are developed, while ...Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović. "Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata" in Podzemni radovi, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2012)
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Fuzzy Model for Risk Assessment of Machinery Failures
The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...... indicator goes through the process of fuzzification, it is necessary to add “time-to-repair” to the classes. The shortest time period of 0.5 h was added to class one, while the 40 h period was added to class 30 (Figure 5). The time for the other classes was determined through linear interpolation. Time ...
... and reasoning method for process equipment failure risk assessment. J. Loss Prev. Process Ind. 2019, 62, 103953. [CrossRef] 13. Jamshidi, A.; Yazdani-Chamzini, A.; Yakhchali, S.H. Developing a new fuzzy inference system for pipeline risk assessment. J. Loss Prev. Process Ind. 2013, 26, 197–208. [CrossRef] ...
... or very high), happens through defuzzification. The process of defuzzification can be applied to all hierarchical levels of an engineering system, depending on the assessment requirements. 3.1. Fuzzy Proposition Fuzzy proposition is a process of defining an observed phenomenon in terms of linguistic ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy Model for Risk Assessment of Machinery Failures" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12040525
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Softverski alati za korišćenje resursa za srpski jezik
Ivan Obradović, Ranka Stanković (2008)... dictionary of compounds is still un- der development and at this moment its dimen- sions are more modest. 2.2 Wordnet – a semantic network of words The semantic network of words, or simply wordnet, is based on the presumption that words, as basic elements of the language, are grouped in human mind ...
... person in a play”, the word “uloga” but also the words “lice” and “lik” are used in Serbian. Thus a semantic network of concepts in a particular language becomes a cor- responding semantic network of words, which is further materialized as a lexical data base of a specific structure. Development of ...
... queries for search of textual contents are usually composed of one or more keywords, or more precisely strings cor- responding to those words, connected by logical IVAN OBRADOVIć, RANKA STANKOVIć 53a and/or operators. It is obvious that the choice of keywords, that is their corresponding strings ...Ivan Obradović, Ranka Stanković. "Softverski alati za korišćenje resursa za srpski jezik" in INFOteka: časopis za informatiku i bibliotekarstvo, Belgrade, Serbia : Zajednica biblioteka univerziteta u Srbiji (2008)
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A Data Driven Approach for Raw Material Terminology
Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci... work, followed by generating raw data, optimizing the process, and ending by generating refined data. COVID-19 news reports are used as a simulation example of big textual data and applied to verify the efficacy of the machine optimizing process. Electronic lexicography offers important possibilities ...
... Part-of-speech tagging represents an automatic text annotation process in which words or tokens are marked by part of speech tags, which typically correspond to the main syntactic categories in a language (e.g., noun, verb). Lemmatization is the process by which inflected forms of a lexeme are grouped together ...
... terms and terminological phrases, after the evaluation process, all correctly evaluated bilingual terms were prepared for insertion into the termi- nological database Termi. So far, more than 3000 term-to-term pairs were inserted. In this process they were merged to form synonymous sets (synsets) by using ...Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja. "A Data Driven Approach for Raw Material Terminology" in Applied Sciences, MDPI AG (2021). https://doi.org/10.3390/app11072892
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Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit
... application of the mentioned five models, the linear dependency between m and K form has been determined. K =1996.4739· n – 2625.7860; (16) With coefficient of the linear dependency which is: , = 0.074. Based on the values of the coefficient of linear dependency r, between parameters m and K forallfive ...
... calculated rock mass oscillation velocities in this paper we used the coefficient of linear correlation r, [7] between the logarithms of reduced distances R and logarithms of oscillation velocities y. Coefficient of linear correlation F is also used in order to evaluate the degree of connection between ...
... for models 1 — 5 in the form of: • Modell v =2131.52. R 2440 (11) thus between logv and log R we get linear dependency that is expressed by equation (11) with the coefficient of linear dependency „ Which is: , „ =-0.8613. Graphic review of the rock mass oscillation equation is shown in figure ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit" 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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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... bacteria type is based on metabolic activities involved in the MICP process. Whether the metabolic pathway is autotrophic (induction of local CO2 reduction) or heterotrophic (lead to active and passive CaCO3 formation), the MICP process is a consequence of carbonate production by ion transport across cellular ...
... e, the whole process is reflected in a change of pH value and concentration of dissolved inorganic deposits in a matrix, which is especially expressed during ureolytic activity [2]. Therefore, kinetic pathways of ureolytic activity have been used to better understanding the MICP process based on predictions ...
... bacterial isolates from sabkhas. 3.3. Examination of Metabolic Activities Relevant to the MICP Process Different physiological and ecological tests might be important for understanding behavior during the MICP process [40]. Due to this hypothesis, bacterial growth in oxygen- free conditions, salts tolerance ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
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The ICL Adriatic-Balkan Network: Scientific background, opportunities and challenges for regional cooperation
Mihalić Snježana, Arbanas Željko, Mikoš Matjaž, Abolmasov Biljana. "The ICL Adriatic-Balkan Network: Scientific background, opportunities and challenges for regional cooperation" in Proceedings of IPL Symposium, Kyoto, 20th January 2012. International Consortium on Landslides 1 no. 1, Kyoto University, Japan:International Consortium on Landslides (2012): 27-39