Претрага
1035 items
-
Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas
This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – ...HPP ''Djerdap 1'', backwater influence, groundwater regime, hydrodynamic analysis, melioration area, drainage system, additional energy engagementPredrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić. "Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas" in IWA Specialist Groundwater Conference, Conference Proceedings and Book of Abstracts, 09-11 June 2016, Belgrade, Serbia, Institut Jaroslav Černi (2016)
-
Micro- to nanoscale textures of gold in arsenopyrite and scorodite from the As-Au-Bi assemblage of Drenjak locality (Serbia)
Ivana Jelić, Janez Zavašnik, Marina Lazarov, Alena Zdravković, Sabina Kovač, Jovica Stojanović, Aleksandar Pačevski (2023)Arsenopyrite and pyrite are important carriers of Au that is present in the form of microscopic and “invisible” gold. Such gold can be expected to be released upon the process of oxidation of these sulfides. In studied gold mineralization at Drenjak, related to the granitoids of the Oligocene-Miocene Kopaonik Ore District, the main arsenopyrite-pyrite-(bismuthinite) sulfide assemblage was formed in the quartz bodies and partly replaced by scorodite (FeAsO4·2H2O) and Bi-arsenate. With only up to 5 ppm of gold recorded ...Ivana Jelić, Janez Zavašnik, Marina Lazarov, Alena Zdravković, Sabina Kovač, Jovica Stojanović, Aleksandar Pačevski. "Micro- to nanoscale textures of gold in arsenopyrite and scorodite from the As-Au-Bi assemblage of Drenjak locality (Serbia)" in Ore Geology Reviews, Elsevier BV (2023). https://doi.org/10.1016/j.oregeorev.2023.105711
-
An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System
In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...... grouping involving interrelated data. For example, production by each production unit can be rolled up to production by type of equipment and further can be rolled up to open pit, or the whole mine, aggregated for specified period, by products (figure 5). In drilldown reports, OLAP can go in the ...
... hierarchical time periods: monthly, quarterly, yearly and the like; and present data in different perspectives, such as breakdowns by equipment versus breakdowns by type and by working hour per organizational unit. Figure 5. Pivot table based on OLAP cube with rolled-up production Figure 6. OLAP ...
... ly display detailed data that comprises consolidated data. For example, equipment breakdowns can be accessed by mining production system, equipment or its component part, as well as by the breakdown type or more detailed causes. Slicing and dicing refers to the ability to look at the database from ...Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović. "An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System" in Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment Selection, Torino, Italy, September 2006, Vol. 1,, Balkema (2006)
-
Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event
Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco. "Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event" in Historical Biology (2023). https://doi.org/10.1080/08912963.2023.2190757
-
Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... of classification models (typically by minimizing a loss function), which are then applied to the same input variables to predict classes present in the training data. The emphasis was on comparing the categorical lithology pre- dictions that were generated by the ML algorithms RF and KNN with ...
... parameters 1.e., features for predictive lithological mapping. Gravity data (Bilibajkić et al. 1979) were obtained by detailed gravimetric surveys conducted between 1952 and 1984 by the Geophysical Institute in Serbia and Macedonia. The Cassinis Formula (1930) was utilized to calculate normal ...
... less data. This observation was further corroborated by the evaluation metrics displayed previously. Upon visual inspection, it can be inferred that the optimal input dataset among the three RF model groups is dataset C, as supported by the analysis of the evaluation metrics. The dataset denoted ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
-
A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System
This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFISMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958
-
Classification of Main Ocurences and Deposites of Mineral, Thermal and Thermomineral Water of Serbia by Classification V.V. Ivanov
Krunić Olivera, Filipović Budimir, Parlić Srđan, Jovanović Marina. "Classification of Main Ocurences and Deposites of Mineral, Thermal and Thermomineral Water of Serbia by Classification V.V. Ivanov" in Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. = Proceedings of the 15th Congress of Geologists of Serbia with International Participation, Belgrade [26-29 May] 2010 1, Београд:Српско геолошко друштво = Serbian Geological Society (2010): 549-557
-
Obtaining of Ceramic Materials by the Method of the Thermal Transformation of Cation Exchanged Zeolites
Radosavljević Mihajlović Ana, Stojanović Jovica, Došen Anja, Vulić Predrag. "Obtaining of Ceramic Materials by the Method of the Thermal Transformation of Cation Exchanged Zeolites" in Advanced Ceramics and Application : program and the book of abstracts / [1st] Serbian Ceramic Society Conference, May 10-11th, 2012, Belgrade, Serbia, Beograd, Srbija:Srpsko keramičko društvo (2012): 25-25
-
Cryptocrystalline magnesite hosted by sediments adjoining ultramafic rock complexes
Ebner Fritz, Dietmayer Marco, Kroissenbrunner Philip, Mali Heinrich, Unterweissacher Thomas, Horkel Konstantin, Mirnejad Hassan, Simić Vladimir (2012)Ebner Fritz, Dietmayer Marco, Kroissenbrunner Philip, Mali Heinrich, Unterweissacher Thomas, Horkel Konstantin, Mirnejad Hassan, Simić Vladimir. "Cryptocrystalline magnesite hosted by sediments adjoining ultramafic rock complexes" in Proceedings of the 29th IAS Meeting of Sedimentology, Schladming, Austria, 10th - 13th September, Leoben, Austria:International Association of Sedimentologists - IAS (2012): 605-605
-
Tracking of slow moving landslide by photogrametric data-a case study
Abolmasov Biljana, Đurić Uroš, Pavlović Radmila, Trivić Branislav. "Tracking of slow moving landslide by photogrametric data-a case study" in Landslides and Engineered Slopes: Protecting Society through Improved Understanding, Proceedings of the 11th International and 2nd American Symposium on Landslides and Engineered Slopes 2 no. 1, Leiden:CRC Press (2012): 1359-1363
-
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
-
Determining indirect dependency of production segments within thermal power plant „Open pit mines Kostolac“ by multisectoral models
Maksimović Svetomir, Miljanović Igor, Živojinović Miljanović Ivana, Josipović Pejović Milena, Petrovski Aleksandar (2013)Maksimović Svetomir, Miljanović Igor, Živojinović Miljanović Ivana, Josipović Pejović Milena, Petrovski Aleksandar. "Determining indirect dependency of production segments within thermal power plant „Open pit mines Kostolac“ by multisectoral models" in Proceedings of the 5th Balkan Mining Congress BALKANMINE 2011, 18-20.10.2013 - no. -, Ohrid, FYR Macedonia:ELEM, University Goce Delcev, Stip (2013): 68-73. https://doi.org/-
-
Crystal chemistry of nephelines from ijolites and nepheline-rich pegmatites: influence of composition and genesis on the crystal structure investigated by X-ray diffraction
Vulić Predrag, Balić-Žunić Tonči, Belmonte Louise Josefine, Kahlenberg Volker. "Crystal chemistry of nephelines from ijolites and nepheline-rich pegmatites: influence of composition and genesis on the crystal structure investigated by X-ray diffraction" in Mineralogy and Petrology 101 no. 03-Apr, Wien, New York:Springer-Verlag (2011): 185-194. https://doi.org/10.1007/s00710-010-0143-5
-
Crystal structure of cobalt-substituted calcium hydroxyapatite nano-powders prepared by hydrothermal processing
Veselinović Ljiljana, Karanović Ljiljana, Stojanović Zoran, Bračko Ines, Marković Smilja, Ignjatović Nenad, Uskoković Dragan (2010)Veselinović Ljiljana, Karanović Ljiljana, Stojanović Zoran, Bračko Ines, Marković Smilja, Ignjatović Nenad, Uskoković Dragan. "Crystal structure of cobalt-substituted calcium hydroxyapatite nano-powders prepared by hydrothermal processing" in Journal of Applied Crystallography 43 no. 2, Rosenoerns Alle 1; PO Box 227; Copenhagen V, 1502; Denmark:Blackwell Munksgaard (2010): 320-327. https://doi.org/10.1107/S0021889809051395
-
A selection of land reclamation solution at the Bogutovo Selo - Ugljevik open pit mine by multi-attribute analysis
Dimitrijević Bojan, Milјanović Igor (2014)Dimitrijević Bojan, Milјanović Igor. "A selection of land reclamation solution at the Bogutovo Selo - Ugljevik open pit mine by multi-attribute analysis" in Bulletin of Mines, Mining Institute, Belgrade, Земун, Београд:Рударски институт (2014)
-
Regional-scale screening of groundwater pollution risk induced by historical mining activities in Serbia
Atanacković Nebojša, Dragišić Veselin, Živanović Vladimir, Gardijan Sunčica, Magazinović Sava (2016)Atanacković Nebojša, Dragišić Veselin, Živanović Vladimir, Gardijan Sunčica, Magazinović Sava. "Regional-scale screening of groundwater pollution risk induced by historical mining activities in Serbia" in Environmental Earth Sciences no. 75, :Springer Berlin Heidelberg (2016): 1152. https://doi.org/10.1007/s12665-016-5983-9
-
Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
-
Ventex: an expert system for mine ventilation systems analysis
roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "Ventex: an expert system for mine ventilation systems analysis" in Mining Technology, United Kingdom (1997)
-
Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia
... total of three vessels were analysed, broken down by type of workmanship: coiling technique (traditional handmade clay pot made by coiling on a hand-turned wheel) marked -1-; wheel throwing (on a wheel with an electric drive) marked as -4- and by moulding (application of a mould) marked as -5- ...
... determine the characteristic attributes for a specific technique. Phase and mineral composition, texture, and structure of the samples were analysed by microscopy of cross-section preparations perpendicular to the vessel walls (Leitz polarization microscope). The numerical colour specification was ...
... sections revealed a uniform mineral composition and porosity. For sample -5- a specific fluid-structure is consistent with the way it was introduced by the application of a mould. The measurements of moisture absorption showed that in this respect there was no significant difference between the samples ...Maja Milošević, Mihovil Logar, Biljana Đorđević. "Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia" in Nordic Clay Meeting/3rd Symposium Clays & Ceramics 2021, The Latvian Clay Science Society (2021)
-
The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796