Претрага
340 items
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389 М23
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Pregled hidrogeoloških istraživanja novootkrivenih ležišta metaličnih mineralnih sirovina na prostoru Srbije
Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović, Jakov Andrijašević (2022)Rastuća potražnja za mineralnim sirovinama, zavisnost evropske industrije od njihovog uvoza, kao i otvaranje tržišta u zadnjih 20-ak godina bili su pokretač intenzivnih istraživanja ležišta mineralnih sirovina na području Srbije. Ova istraživanja za rezultat su imala otkriće važnih ležišta bora i litijuma „Jadar“ i „Valjevo“, sedimentnih ležišta zlata „Bigar i Korkan“ i bakra i zlata „Čukaru Peki“. Sastavni deo ovih aktivnosti, posebno u okviru značajnijih novootkrivenih metaličnih ležišta, bila je hidrogeološka karakterizacija ležišta i okolorudnih terena. U razmatranom periodu ...Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović, Jakov Andrijašević. "Pregled hidrogeoloških istraživanja novootkrivenih ležišta metaličnih mineralnih sirovina na prostoru Srbije" in Zbornik radova XVI srpskog Simpozijum o hidrogeologiji sa međunarodnim učešćem, Univerzitet u Beograd, Rudarsko-geološki fakultet (2022) М34
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Sourcing of groundwater inflows into underground mining works based on statistical modelling and artificial neural networks – the “Čukaru Peki” Cu-Au mine case study
rudničke vode, kvalitet podzemnih voda, rudnička hidrogeologija, statističko modeliranje, mašinsko učenjeNebojša Atanacković, Jana Štrbački, Sunčica Gardijan, Vladimir Živanović. "Sourcing of groundwater inflows into underground mining works based on statistical modelling and artificial neural networks – the “Čukaru Peki” Cu-Au mine case study" in IAH 2024 World Groundwater Congress - Interacting Groundwater, Davos, Švajcarska, 08-13.09.2024, Centre for Hydrogeology and Geothermics (CHYN), UNINE (2024) М34
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Metode ispitivanja sedimentnih stena
Vesna Matović, Violeta Gajić, Nebojša Vasić. Metode ispitivanja sedimentnih stena, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2019 Без категорије
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Primena klasterizacije metodom K-srednjih vrednosti za ispitivanje hidrohemijskog diverziteta podzemnih voda na lokaciji Vrnjačke Banje
Klasterizacija metodom k-srednjih vrednosti koristi se za razvrstavanje podataka u homogene grupe, tj. klastere, na osnovu odabranih varijabli i unapred zadatog broja klastera. Algoritam iterativnim postupkom određuje centre klastera i dodeljuje uzorke u klastere čijem su centru najbliži. Ovaj postupak pogodan je za raščlanjivanje i, samim tim, pojednostavljivanje obimnih skupova hidrohemijskih podataka, što je pokazano na primeru termo-mineralnih voda sa šireg područja Vrnjačke Banje. Pored same klasifikacije, opisana metoda pruža mogućnost provere hipoteza o strukturi podataka, npr. o postojanju ...Jana Štrbački, Vladimir Živanović, Nebojša Atanacković, Snežana Kretić. "Primena klasterizacije metodom K-srednjih vrednosti za ispitivanje hidrohemijskog diverziteta podzemnih voda na lokaciji Vrnjačke Banje" in XVII Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem , Pirot, Srbija, 02-06. oktobar 2024, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739553 М33
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Hydrochemistry-Based Statistical Model for Sourcing Groundwater Inrush into Underground Mining Works: A Case Study in Eastern Serbia
Nebojša Atanacković, Jana Štrbački, Vladimir Živanović, Jelena Davidović, Sunčica Gardijan, Saša Stojadinović (2024)Discriminant analysis was applied to a baseline groundwater quality data set to develop a model for sourcing groundwater inrush into underground mining works. Such inrush events compromise the safety of the working environment and the feasibility of mining; thus, a comprehensive characterization of the hydrogeological system is required. In this study, a statistical model for groundwater sourcing was developed and validated based on a dataset of 179 groundwater chemical analyses related to the “Čukaru Peki” Cu–Au underground mine in ...Nebojša Atanacković, Jana Štrbački, Vladimir Živanović, Jelena Davidović, Sunčica Gardijan, Saša Stojadinović. "Hydrochemistry-Based Statistical Model for Sourcing Groundwater Inrush into Underground Mining Works: A Case Study in Eastern Serbia" in Mine Water and the Environment, Springer-Verlag (2024). https://doi.org/10.1007/s10230-024-00986-2 М22
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Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
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Bio-electrochemical potential and mineralogy of metal rich acid mining lake sediment: the “Robule” lake case study
Nebojša Atanacković, Alena Zdravković, Jana Štrbački, Sabina Kovač, Vladimir Živanović, Katarina Batalović, Srđan Stanković (2024)Mining for base metals and some critical raw materials is associated with acid, sulphate, and metal-rich waters (AMD). At the points where these waters are accumulated or discharged, the secondary minerals are precipitated, mostly iron-oxyhydroxides, forming characteristic orange sediments toxic to the environment. The sediment or sludge is prone to leaching of metals and sulphate, thus requiring proper disposal to maintain the waste stability. In this study, we assessed the AMD lake “Robule” sediment electrochemical properties and associated mineralogy ...Nebojša Atanacković, Alena Zdravković, Jana Štrbački, Sabina Kovač, Vladimir Živanović, Katarina Batalović, Srđan Stanković. "Bio-electrochemical potential and mineralogy of metal rich acid mining lake sediment: the “Robule” lake case study" in International Journal of Environmental Science and Technology, Springer-Verlag (2024). https://doi.org/10.1007/s13762-024-05897-x М22
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffractionMiloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035 M23
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Seasonal Variations of the Zapadna Morava River Water Quality
The water samples collected from four localities of the middle course of the Zapadna Morava River during 2020 were analyzed via the selected physicochemical parameters with the aim to estimate the quality of surface water. According to the results of selected physico-chemical parameters (pH, conductivity, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand), analyzed surface water show a good chemical status, while the values of nutrient content (nitrate, nitrite, ammonium ion, total phosphorus) indicated the poor chemical status especially ...Nebojša Đ. Pantelić, Jana S. Štrbački, Goran Marković, Jelena B. Popović-Đorđević. "Seasonal Variations of the Zapadna Morava River Water Quality" in Zbornik radova Savetovanja o biotehnologiji sa međunarodnim učešćem (Čačak, 12-13. mart 2021), University of Kragujevac, Faculty of Agronomy (2021). https://doi.org/10.46793/SBT26.357P М63
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Стабилност косина одлагалишта површинских копова
Небојша Гојковић, Радмило Обрадовић, Владимир Чебашек . Стабилност косина одлагалишта површинских копова, Београд : Универзитет у Београду - Рударско-геолошки факултет, 2008
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Assessment of status of three water bodies in Serbia based on tissue metal and metalloid concentration (ICP-OES) and genotoxicity (comet assay)*
Karolina Sunjog, Stoimir Kolarevi, Margareta Kracun-Kolarevic, Zeljka Visnji-Jeftic, Stefan Skoric, Zoran Gacic, Mirjana Lenhardt, Nebojsa Vasic, Branka Vukovic-Gacic (2016)Karolina Sunjog, Stoimir Kolarevi, Margareta Kracun-Kolarevic, Zeljka Visnji-Jeftic, Stefan Skoric, Zoran Gacic, Mirjana Lenhardt, Nebojsa Vasic, Branka Vukovic-Gacic. "Assessment of status of three water bodies in Serbia based on tissue metal and metalloid concentration (ICP-OES) and genotoxicity (comet assay)*" in Environmental Pollution, :Elsevier Ltd (2016): 600-607. https://doi.org/http://dx.doi.org/10.1016/j.en M21a
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O tretmanu uljnih šejlova u predloženoj novoj zakonskoj regulativi u oblasti rudarstva i geoloških istraživanja Srbije
Kostić Aleksandar, Ilić Miloje (2013)Kostić Aleksandar, Ilić Miloje. "O tretmanu uljnih šejlova u predloženoj novoj zakonskoj regulativi u oblasti rudarstva i geoloških istraživanja Srbije" in Zbornik radova sa VI Međunarodne konferencije Ugalj 2013, Zlatibor, 2-5 oktobar 2013, Beograd:Jugoslovenski komitet za površinsku eksploataciju (2013): 143-152 M33
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Strateški programi osnovnih i premenjenih geoloških istraživanja resursa čvrstih mineralnih sirovina Srbije
Jelenković Rade, Ilić Miloje (2012)Jelenković Rade, Ilić Miloje. "Strateški programi osnovnih i premenjenih geoloških istraživanja resursa čvrstih mineralnih sirovina Srbije" in Zbornik radova savetovanja: Strategija upravljanja mineralnim resursima rudarskih basena Srbije, Brestovačka Banja:JKPE, Ministarstvo životne sredine rudarstva i prostornog planiranja Srbije (2012): 1-17 M63
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Ground displacement estimation using DInSAR technique
Ilić Dragana, Đurić Dragana (2018)Ilić Dragana, Đurić Dragana. "Ground displacement estimation using DInSAR technique" in Abstract Book 17th Serbian Geological Congress, May 17‐20 2, Beograd:Srpsko geološko društvo (2018): 742-746 M64
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Specifičnosti uljnih šelova i njihov tretman u predloženoj novoj zakonskoj regulativi u oblasti geoloških istraživanja i rudarstva u Srbiji
Kostić Aleksandar, Ilić Miloje (2013)Kostić Aleksandar, Ilić Miloje. "Specifičnosti uljnih šelova i njihov tretman u predloženoj novoj zakonskoj regulativi u oblasti geoloških istraživanja i rudarstva u Srbiji" in Tehnika 5 no. 68, Beograd:Savez inženjera i tehničara Srbije (2013): 849-856 M51
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Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia
Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović. "Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia" in Proceedings of IAH2019, the 46th Annual Congress of the International Associaton of Hydrogeologists, Málaga (Spain), September 22-27, 2019, International Association of Hydrogeologists (IAH) (2019) М34
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Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia
The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić. "Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia" in 5th IAH CEG conference, Slovenian Committee of International Association of Hydrogeologists - SKIAH (2022) М34
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The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area
Groundwater vulnerability maps represent an essential tool for protecting karst groundwater resources. Vulnerability assessment is usually based on spatial evaluation of various parameters that affect the vulnerability degree and regulate the protection role of the unsaturated zone. Most of these parameters, like soil and geology conditions, are constant and do not change during the year or over several years. In contrast, some parameters, such as the groundwater level, depend on the variability of recharge conditions. By considering the variability ...Vladimir Živanović, Igor Jemcov, Nebojša Atanacković. "The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area" in 5th IAH CEG conference, Slovenian Committee of International Association of Hydrogeologists - SKIAH (2022) М34
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Groundwater vulnerability assessment as a tool for understanding karst flow systems and prediction of spring yield - case example of a karst spring in Western Serbia
Modelling approaches in karst hydrogeology imply a high degree of schematization, uncertainty and subjectivity due to the specific nature of karst systems. The need to protect groundwater, especially in karst, has resulted in increasing application of methods for assessing groundwater vulnerability. Vulnerability methods specially developed for karst could assess filtration conditions, anisotropy, specific infiltration, and temporal variability, enabling better characterization and understanding of the karst systems. A recently developed method is the Time Dependent Model (TDM method), where vulnerability ...Vladimir Živanović, Nebojša Atanacković, Slavko Špadijer. "Groundwater vulnerability assessment as a tool for understanding karst flow systems and prediction of spring yield - case example of a karst spring in Western Serbia" in IAH 2024 World Groundwater Congress - Interacting Groundwater, Davos, Švajcarska, 08-13.09.2024, Centre for Hydrogeology and Geothermics (CHYN), UNINE (2024) М34