Претрага
475 items
-
Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM
Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric (2022)The risk assessment of engineering systems represents an important part of the quality of service and dependability. The existing methods for risk evaluation use crisp sets for rating partial indicators’ proposition and their cumulative products as an overall indicator. In this paper, existing FMEA and FMECA methods have been improved using the fuzzy expert system for calculating the risk priority number. The application of fuzzy logic allows the use of linguistic descriptions for risk analysis. In this way, the ...Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric. "Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM" in Mathematics, MDPI AG (2022). https://doi.org/10.3390/math10050811
-
Design of the Opencast Coal Mine Drmno Dewatering System
Development of mining in the opencast mine Drmno from Kostolac basin in Serbia is carried out in the increasingly complex geological and hydro geological conditions with the decline of the coal seams to the alluvial part of Europe's largest river Danube. Greater depth and inflow of groundwater significantly increase costs for dewatering facilities construction with the requirement for optimizing of this more and more important surface mining process. Making decision on screen construction in the opencast mine with redesign ...dewatering system, groundwater, hydrodynamic model, dewatering wells, screen, reliability, environmental effects.Vladimir Pavlović, Dušan Polomčić, Tomislav Šubaranović. "Design of the Opencast Coal Mine Drmno Dewatering System" in Proceedings of the 12th International Symposium Continuous Surface Mining - Aachen 2014, Springer International Publishing (2014). https://doi.org/10.1007/978-3-319-12301-1_11
-
Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
-
Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater
Veljko Marinović (2021)Modelling of karst hydrogeological systems is a very complicated task, bearing in mind that for a deterministic model one should know the internal physical processes of precipitation transformation into discharge, while for a stochastic model nonlinear dynamic systems such as karst should be simulated by linear regression equations. Stochastic models need linearization of input time series due to often large residual in the recession period. This occur because the model is not able to absorb single rain episodes, which ...Veljko Marinović. "Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater" in Karst: From Top to Bottom, Belgrade, 6.6.2021., Belgrade : Centre for Karst Hydrogeology (2021)
-
Evidence for Badenian marine transgression in Belgrade (Serbia)
Filip Anđelković, Dejan Radivojević (2019)... [ДР РГФ] Evidence for Badenian marine transgression in Belgrade (Serbia) | Filip Anđelković, Dejan Radivojević | AAPG Vienna, Paratethys petroleum systems between Central Europe and the Caspian Region, Vienna, 26-27 mart, 2019 | 2019 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005451 Дигитални репозиторијум ...Filip Anđelković, Dejan Radivojević. "Evidence for Badenian marine transgression in Belgrade (Serbia)" in AAPG Vienna, Paratethys petroleum systems between Central Europe and the Caspian Region, Vienna, 26-27 mart, 2019, AAPG (2019)
-
Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin
Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek. "Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-1207-SPSEINTRO.1
-
Building Terminological Resources in an e-Learning Environment
... of various texts on the web. First and foremost, they are indispensable in information an document retrieval systems. In addition to monolingual resources, machine translation systems and cross- language information retrieval emphasize the need for development of bilingual and multilingual term ...
... production of controlled dictionaries related to planning and management of exploitation, to mine safety protection systems, mining equipement management, human resources management systems, as well as in a business intelligence module of the information system for defining OLAP cubes. Given the ...
... pp.211-220, 2009. [2] Bouzeghoub, A. Elbyed, A., Ontology Mapping for Web-Based Educational Systems Interoperability, IBIS – International Journal of Interoperability in Business Information Systems, No.1, pp.73-84, 2006. [3] Daconta, M. O. et al., 2003. The Semantic Web: A Guide to the Future ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Building Terminological Resources in an e-Learning Environment" in Proceedings of the Third International Conference on e-Learning, eLearning-2012, September 2012, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2012)
-
Knowledge and Rule-Based Diacritic Restoration in Serbian
In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).... -retrieval thesauri and explicated in existing ontological terms. 5. RuThes Ontologies in Information-Analytical Systems RuThes ontologies are used in information-analytical systems as a tool of conceptual indexing and search, various forms of query expansion can be carried out. One of the main ...
... the format of the RuThes thesaurus (Loukachevitch and Dobrov, 2014) and created for automatic processing of documents in information- analytical systems and natural language processing. These resources are linguistic ontologies uniting some principles of their organization from WordNet, informatio ...
... better recog- nition of concepts in texts. The concept-based approach seems to be more convenient for text analytics and information-analytical systems in specific domains. Fig. 1-2 show the interface of thesaurus developing. The upper left form contains a list of concepts in alphabetical order. ...Cvetana Krstev, Ranka Stanković, Duško Vitas. "Knowledge and Rule-Based Diacritic Restoration in Serbian" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018): 41-51
-
Hidrogeotermalni resursi teritorije grada Beograda
Ana Vranješ (2012-12-12)Republika Srbija je izrazito bogata hidrogeotermalnim resursima. Podzemne vode satemperaturama preko 20oC (pa do 96oC, Vranjska Banja) relativno su dobro iskorišćene.Nasuprot njima, podzemne vode sa temperaturama do 20oC do sada uglavnom nisu bilepredmet istraživanja sa bilo kog aspekta izuzev za potrebe vodosnabdevanja. Razvojemsistema toplotnih pumpi, mogućnosti višenamenskog korišćenja ovih voda značajno suuvećane.Teritorija Beograda odlikuje se značajnim resursima podzemnih voda, pre svega u okvirualuvijalnih peskovito-šljunkovitih naslaga i neogenih tortonsko-sarmatskih krečnjačkihnaslaga. Temperatura ovih voda ne prelazi 25oC. Njihovim zahvatanjem preko istražnoeksploatacionihbunara ...geotermalna energija, hidrogeotermalni resursi, hidrogeotermalni sistemi, hidrogeotermalnapotencijalnost, energetska valorizacija, hidrogeološka rejonizacija, grad BeogradAna Vranješ. "Hidrogeotermalni resursi teritorije grada Beograda" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2012-12-12)
-
Threshold-induced correlations in the Random Field Ising Model
... perturbation by means of a characteristic intermittent avalanche-like relaxation is immanent in many di�er- ent physical systems exhibiting crackling noise15. Examples of such systems stem from earthquakes16–19 to neu- ronal networks20, from compression of wood samples21 and porous materials22–24 to d ...
... perturbation by means of a characteristic intermittent avalanche-like relaxation is immanent in many differ- ent physical systems exhibiting crackling noise’®. Examples of such systems stem from earthquakes'*” to neu- ronal networks”, from compression of wood samples! and porous materials**-~4 to deformation ...
... of its dimensions and therefore plays the role of in�nite avalanche, causing the jump of magnetization in in�nite systems below the critical disorder. In three-dimensional RFIM systems, these avalanches have di�erent distributions than remaining (i.e. non-spanning) avalanches35, and violate the scaling ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
-
Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex
Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males. "Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2024). https://doi.org/10.2298/GABP240116003S
-
The Rift Sequence Stratigraphy of the Itebej Field (Pannonian Basin, Serbia)
... of the Itebej Field (Pannonian Basin, Serbia) | Saša Ivanišević, Jelena Radišić, Ivana Isić, Dejan Radivojević | AAPG Vienna, Paratethys petroleum systems between Central Europe and the Caspian Region, Vienna, 26-27 mart, 2019 | 2019 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005453 Дигитални репозиторијум ...Saša Ivanišević, Jelena Radišić, Ivana Isić, Dejan Radivojević. "The Rift Sequence Stratigraphy of the Itebej Field (Pannonian Basin, Serbia)" in AAPG Vienna, Paratethys petroleum systems between Central Europe and the Caspian Region, Vienna, 26-27 mart, 2019, AAPG (2019)
-
Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling" in GeoMod 2021, Doorn, the Netherlands, 19.-23.9.2021., Utrecht University (2021)
-
Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... groundwater in geothermal areas or with low-temperature groundwater systems. Given that the sub- ject matter of this research was groundwater used for drink- ing water supply, the focus is on the theoretical basis of low-temperature systems. Conditions that favor arsenic migration are associated with a reducing ...
... structural porosities and clay interbeds that pre- vent pollutants from permeating from the ground surface. It should be noted, however, that water supply systems are comprised of relatively deep (70-250 m) drilled wells which tap Pliocene-Pleistocene sediments, while no elevat- ed arsenic concentrations were ...
... Faculty of Natural Sciences of the University of Novi Sad [22]. Total arsenic concentrations were measured in 470 water samples from public water supply systems from 2004 to 2009. Sampling and analyses of drinking water were per- formed at the following laboratories: at the Institute of Public Health of Vojvodina ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
-
Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović1 ABSTRACT Opportunities offered by geographic information systems are very modestly exploited in Serbian mining industry. It is the authors’ wish to bring closer to the mining public at least a small part of the ...
... possibilities for high quality situation monitoring and comprehension, as well as prediction of our future line of action. Geographic information systems (GIS) are precisely such a tool. They offer support for implementation of various types of projects aimed at economic development, resource management ...
... offering fast access to data necessary for decision making on a large number of issues. According to a general definition, geographic information systems are a powerful set of tools for collecting, storing, searching, transforming and presentation of real word spatial data [Burrough & McDonnel, 2006] ...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)
-
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... multiple candidates needs to be further devel- oped. Options of using a hybrid approach that would merge a dictionary with machine-learning will be explored. Finally, a user-friendly interface that will enable the use of these systems on the Web is already under development. Acknowledgment This research ...
... ‘reception’). For the problem of switching between two pronunciations two systems were developed: the first one transforms an Ekavian text to its Ijekavian version, the other transforms an Ijekavian text to its Ekavian version. These systems work in the similar way as the system for diacritic restoration, and ...
... vs. bjega ‘to runaway (aorist)’. Both systems use the same procedure for detecting words that should be “corrected” and producing lists of candidates for replacement, although, obviously, the resources they use are different. The results produced by two systems on two sample texts are presented in Table ...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
-
The State and Perspective of Belgrade District Heating System Development
Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić (2019)District heating (DH) system in Belgrade provides energy for heating of more than 21 million m2 in households (app. 50% of all households), public, commercial and industry sectors. Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of ...... | Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić | 5th International Conference on Smart Energy Systems | 2019 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005047 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić . "The State and Perspective of Belgrade District Heating System Development" in 5th International Conference on Smart Energy Systems, Copenhagen : Aalborg Universitet (2019)
-
The effect of finite driving rate on avalanche distributions
Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear PhysicsSonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević. "The effect of finite driving rate on avalanche distributions" in Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing (2021). https://doi.org/10.1088/1742-5468/ac1f12
-
An Efficient Class of Iterative Root-Finding Methods with Applications
Dejan Ćebić, Nebojša Ralević (2021)Dejan Ćebić, Nebojša Ralević. "An Efficient Class of Iterative Root-Finding Methods with Applications" in 2021 IEEE 19th International Symposium on Intelligent Systems and Informatics (SISY), IEEE (2021). https://doi.org/10.1109/SISY52375.2021.9582495
-
Тhe Properties of Modifications of Newton’s Method For Solving Nonlinear Equations
Ralević Nebojša, Ćebić Dejan (2013)Ralević Nebojša, Ćebić Dejan. "Тhe Properties of Modifications of Newton’s Method For Solving Nonlinear Equations" in IEEE 11th International Symposium on Intelligent Systems and Informatics (SISY) (2013): 341-345. https://doi.org/ 10.1109/SISY.2013.6662599