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707 items
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A business intelligence approach to mine safety management
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)... 2009. 1: p. 185. 5. Cheng, H., Y.-C. Lu, and C. Sheu, An ontology-based business intelligence application in a financial knowledge management system. Expert Systems with Applications, 2009. 36(2): p. 3614-3622. 6. Galatescu, G., et al., Ontology-based modeling and inference for occupational risk ...
... "Research and Development in Mechanical Industry". RaDMI 2012: p. pp 108-118. 9. Kolonja, L., et al., Development of terminological resources for expert knowledge: a case study in mining. Knowledge Management Research & Practice, 2015. 10. Glowacki, A. Development of a Taxonomy for Indexing Web-Based ...
... applications and knowledge assets, supported by knowledge management analytical services implemented in a business intelligence system. This paper describes such a system for mine safety and its application for accident analysis in mines, developed to improve efficiency, offer fast answers and key ...Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić . "A business intelligence approach to mine safety management" in 13th International Symposium Continuous Surface Mining, Beograd : Yugoslav Opencast Mining Committee (2016)
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Permanent GNSS monitoring of landslide Umka
Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...... main characteristics of the established automated GNSS monitoring system can be find in Erić et al. [6]. Generally, the Umka monitoring system consists of GNSS network and supporting software solutions. The first part of the system, the network, consists of several reference points and one object ...
... geodetic techniques. Since 2010, landslide activity has been continuously monitored by automated permanent Global Navigation Satellite System (GNSS) based monitoring system in real time. Furthermore, since 2018 landslide activity has been monitored by GNSS kinematic positioning of a set of characteristic ...
... types of complex monitoring automated systems found its use in various engineering disciplines. The Global Navigation Satellite System (GNSS) based monitoring system is one of the widely used systems, used in order to assess the dynamics of the landslide phenomenon and potentially prevent possible ...Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović. "Permanent GNSS monitoring of landslide Umka" in International Conference on Contemporary Theory and Practice in Construction XIV Stepgrad, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy (2020). https://doi.org/10.7251/STP2014091S
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A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883
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Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process
This paper presents a methodology for evaluating and ranking different bucket wheel excavators (BWE) for determining which machine should enter in the process of revitalization and modernization. Various multicriteria methods are used. Combining them achieves the best effect when choosing BVE for the modernization process. AHP, TOPSIS, VIKOR, and PROMETHEE methods are used. The hybrid models are developed from the multi-criteria decision making (MCDM) methods and they are used to evaluate the basic indicators that characterize the operation of ...Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic. "Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process" in Expert Systems with Applications, Elsevier BV (2022). https://doi.org/10.1016/j.eswa.2022.117199
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Hydrochemical impact of the hydraulic tunnel on groundwater in the complex aquifer system in Pirot, Serbia
Hidrogeohemijski procesi, hidrohemijske promene, karstna izdan, tunel pod pritiskom, multivarijantne statističke analizeMarina Ćuk, Igor Jemcov, Ana Mladenović, Marina Čokorilo Ilić. "Hydrochemical impact of the hydraulic tunnel on groundwater in the complex aquifer system in Pirot, Serbia" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00563-y
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Middle Miocene otoliths of freshwater fishes from the Vracevic Lake (Serbian Lake System)
Katarina Bradić-Milinović, Ljupko Rundić, Werner Schwarzhans. "Middle Miocene otoliths of freshwater fishes from the Vracevic Lake (Serbian Lake System)" in Annales Geologiques de la Peninsule Balkanique, Rudarsko-geološki fakultet, Beograd (2021). https://doi.org/10.2298/GABP210616006B
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Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation
Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović. "Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation" in Thermal Science, National Library of Serbia (2023). https://doi.org/10.2298/TSCI220813168I
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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
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Novel Hybrid MPSI–MARA Decision-Making Model for Support System Selection in an Underground Mine
objektivne težine kriterijuma, MPSI metoda, višekriterijumsko odlučivanje, MARA metoda, izbor sistema podgrade, podzemna eksploatacijaMiloš Gligorić, Zoran Gligorić, Suzana Lutovac, Milanka Negovanović, Zlatko Langović. "Novel Hybrid MPSI–MARA Decision-Making Model for Support System Selection in an Underground Mine" in Systems, MDPI AG (2022). https://doi.org/10.3390/systems10060248
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The influence of back-arc extension direction on the strain partitioning associated with continental indentation: Analogue modelling and implications for the Circum-Moesian Fault System of South-Eastern Europe
analogno modelovanje, raspodela deformacija, transkurentno rasedanje, bidirekciona ekstenzija, Cirkum-mezijski rasedni sistemNemanja Krstekanić, Ernst Willingshofer, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "The influence of back-arc extension direction on the strain partitioning associated with continental indentation: Analogue modelling and implications for the Circum-Moesian Fault System of South-Eastern Europe" in Journal of Structural Geology, Elsevier BV (2022). https://doi.org/10.1016/j.jsg.2022.104599
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP
Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv... cal system: A case study HPP Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case ...
... ; (3) a well-structured karst aquifer system influenced by WMO transients; (4) afault-controlled zone of deep hypogene karst aquifer discharge highly influenced by WMOo transients; and (5) an aquifer with a dominant development of the karst conduit system highly influenced by WMO transients. The ...
... 2024, 132068 ELSEVIER Research papers Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP Pirot, Serbia Igor Jemcov ”, Maja Todorović ', Aleksandar Jemcov P, Marina Ćuk Đurović ? 2, i Show more V — Addto Mendeley ...Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović. "Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP" in Journal of Hydrology, Pirot, 2024, Elsevier BV (2024). https://doi.org/10.1016/j.jhydrol.2024.132068
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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 ...... to 280,000 EUR (excl. VAT). The new biomass DH system amortizes dynamically within 10.5 years. The internal rate of return of the biomass DH system reaches 8.66%, and the net present value is 56,000 EUR. It was shown in [4] that a new biomass DH system is economically advantageous compared to a ref ...
... refurbishment of the existing fossil-fueled DH system. In addition, the new biomass DH system, compared to the refurbished fossil-fueled DH system, avoids the thermal utilization of 2.65 GWh/a of heavy fuel oil and the emission of 798 t/a of CO2 (equivalent). 3. Business Models for Development of Biomass ...
... utilization chain are presented. 2. Biomass project in Kostojevići The existing district heating system in Kostojevići uses heavy fuel oil for heat production to supply households and public buildings. The system has been operating since 2007 as a part of the Public Utility Company (PUC) “BB term” from Bajina ...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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An aproach to Implementation of blended learning in a university setting
... application of this e-learning support system. Hence, a decision was made to introduce Moodle to the already existent blended learning system at FMG. Moodle is a free and open source (published under the GNU Public License) LMS (Learning Management System) platform. From a technical point of ...
... systems, Information system design, and GIS (Geographic Information System) technologies. InfoTech course material is hence not organized on a weekly basis but rather by different topics. Namely, GIS technologies are, for example, one of the topics of the Information system design course, whereas ...
... studies. The main motivation for introducing a blended learning system came from the fact that in traditional face-to-face learning, the students were prone to taking a basically passive role. Thus the new learning system was aimed at turning the student role in the learning process to a more ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names
In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...... SRPNER. The new version of this system recognizes more variations for naming persons: distinguished per- sons and first names alone. Moreover, system dis- tinguishes names used for men from those used for women (Krstev et al., 2015). Presented results show that the system was more successful in rec- ognizing ...
... than women. The output of the system are texts with XML tags for recognized entities inserted in them. Since the system allows embedded NEs, recognized names of persons can be components of other NEs, e.g. organizations. 2.2 The Preparation of the Gold Standard The system presented in the previous section ...
... obtained models, together with a rule- and lexicon- based system were evaluated on two sam- ple texts: a part of the gold standard and an independent newspaper text of approx- imately the same size. The results show that rule- and lexicon-based system out- performs trained models in all four sce- narios (measured ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names" in Proceedings - Natural Language Processing in a Deep Learning World, Incoma Ltd., Shoumen, Bulgaria (2019). https://doi.org/10.26615/978-954-452-056-4_122
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Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)... Измењено: 2023-10-14 04:33:12 Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan ...
... Escartin, John C. Mutter Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N | Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix ...
... Investigations: Magmatic, Volcanic, Hydrothermal and Biological Processes chaired by Michael Perfit Title: Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Authors: Milena Marjanović1, Suzanne M. Carbotte2, Alexandre Stopin3,4, Felix Waldhauser2, Satish C. ...Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter. "Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N" in AGU Fall Meeting 2021, American Geophysical Union (2021)
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Managing mining project documentation using human language technology
Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentationAleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja . "Managing mining project documentation using human language technology" in The Electronic Library (2018). https://doi.org/10.1108/EL-11-2017-0239
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Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... Измењено: 2024-09-23 10:01:42 Design of a sucker rod pumping system Ana Ponoćko Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Design of a sucker rod pumping system | Ana Ponoćko | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008833 Дигитални ...
... individual element ofthe system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The second part involves ...
... and describes the operation of the entire system. The second part involves an analysis and calculations using the "RODSTAR", "QRod" and "Prosper" software, which will define differences in calculations between software for Sucker Rod pumps. 2 SYSTEM FOR ROD PUMPING A sucker rod pump is no more ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
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Three new Sr-bearing arsenates, hydrothermally synthesized in the system SrO–MO–As2O5–H2O (M2+ = Mg, Cu, Zn)
Tamara Đorđević, Ljiljana Karanović (2018)During systematic research on the mineral-related synthetic arsenates, with particular focus on their structural and spectroscopic classification, three new Sr-containing arsenates Sr2Mg(AsO4)2· 2H2O (1), Sr2Zn4(AsO4)4·H2O (2) and Sr2Cu7(AsO4)6 (3) have been synthesized under low-temperature hydrothermal conditions in the system SrO MO As2O5 H2O (M 2þ = Mg, Zn, Cu). Their crystal structures were determined using room-temperature single-crystal X-ray diffraction data and refined to the following R-values: 1– R1 = 0.025; 2– R1 = 0.030; 3– R1 = 0.035. Compounds ...стронцијум, арсен, арсенати, кристална структура, дифракција рендгенских зрака на монокристалима, хидротермална синтеза, Раманска спектроскопијаTamara Đorđević, Ljiljana Karanović. "Three new Sr-bearing arsenates, hydrothermally synthesized in the system SrO–MO–As2O5–H2O (M2+ = Mg, Cu, Zn)" in European Journal of Mineralogy, Schweizerbart (2018). https://doi.org/10.1127/ejm/2018/0030-2749