Претрага
212 items
-
Attenuation of bacteriological contaminants in karstic siphons and relative barrier purifiers – Case examples from Carpathian karst in Serbia
Vasić Ljiljana, Stevanović Zoran, Milanović Saša, Petrović B. "Attenuation of bacteriological contaminants in karstic siphons and relative barrier purifiers – Case examples from Carpathian karst in Serbia" in Hydrogeological and Environmental Investigations in Karst Systems, Environmental Earth Sciences Vol. 1 1, Berlin, Heidelberg:Springer (2015): 449-456
-
Genesis and circulation of fresh and thermal groundwater flows in same karstic aquifer - Case examples from the Carpathian karst of eastern Serbia
Vasić Ljiljana, Milanović Saša, Stevanović Zoran. "Genesis and circulation of fresh and thermal groundwater flows in same karstic aquifer - Case examples from the Carpathian karst of eastern Serbia" in Book of abstracts of the International Symposium on Hierarchical Flow Systems in Karst Regions KARSTFLOW 2013, Budapest, :IAH (2013): 138
-
Application of machine learning for diagnosing the operation of a deep well pump in oil production
Maja Trikić (2024)This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoostMaja Trikić. Application of machine learning for diagnosing the operation of a deep well pump in oil production, 2024
-
High-resolution sequence stratigraphy of carbonates - theory and examples
Jelena Stefanović, Dejan Radivojević (2020)Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...Jelena Stefanović, Dejan Radivojević. "High-resolution sequence stratigraphy of carbonates - theory and examples" in Zapisnici Srpskog geološkog društva za 2020. godinu, Srpsko geološko društvo (2020)
-
Tehnike mekog računarstva u hidrogeologiji
Meko računarstvo predstavlja skup inteligentnih metoda koje se, za razliku od klasičnog računarstva, zasnivaju na približnom izračunavanju i zaključivanju. Ove metode imitiraju biološke procese kao što su neuroni u mozgu, evolucijski procesi i ljudska sposobnost zaključivanja, što omogućava efikasno rešavanje problema koje je teško rešiti tradicionalnim matematičkim i računarskim metodama. Tehnike mekog računarstva, poput veštačkih neuronskih mreža (ANN), fazi logike i adaptivnih neuro-fazi sistema zaključivanja (ANFIS), su široko korištene i pokazale su se pouzdanim i jednostavnim za simulaciju složenih ...Ivan Drakulić, Dušan Polomčić, Jelena Ratković, Dragoljub Bajić. "Tehnike mekog računarstva u hidrogeologiji" in Zbornik radova XVII srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739966
-
An example of karst catchment delineation for prioritizing the protection of an intact natural area
Ristić-Vakanjac Vesna, Stevanović Zoran, Maran Aleksandra, Vakanjac Boris, Čokorilo Ilić Marina (2014)Ristić-Vakanjac Vesna, Stevanović Zoran, Maran Aleksandra, Vakanjac Boris, Čokorilo Ilić Marina. "An example of karst catchment delineation for prioritizing the protection of an intact natural area" in Hydrogeological and Environmental Investigations in Karst Systems, Environmental Earth Sciences 1, Berlin, Heidelberg:Springer (2014): 387-396
-
Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases
Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić. "Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases" in Chemical Papers, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s11696-021-01884-5
-
Against the tide: southeast to northwest shelf-edge progradation in the southeastern margin of Lake Pannon, Banat (Serbia and Romania)
In the late Neogene, the Pannonian Basin in Central Europe was filled with sediments when rivers from the Alps and Carpathians shed their sediment load into Lake Pannon. The most powerful source-to-sink system was that of the paleo-Danube, transporting sediments from the NW as far as the southeastern part of the lake. In the southeastern margin of the basin, however, local sedimentary systems worked in the opposite direction, against the “tide” of the prevailing N to S sediment transport. ...Dejan Radivojević, Miloš Radonjić, Lajos Tamás Katona, Imre Magyar. "Against the tide: southeast to northwest shelf-edge progradation in the southeastern margin of Lake Pannon, Banat (Serbia and Romania)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2022). https://doi.org/10.1007/s00531-022-02188-z
-
Regionalna karakterizacija karstnih podzemnih voda dela centralnog Balkana u funkciji njihovog održivog korišćenja i menadžmenta
Veljko J. Marinović (2022)Karstne podzemne vode koristi oko 700 miliona ljudi na svetu, čime je njihov značaj za svetsko stanovništvo nemerljiv. U sklopu doktorske disertacije vršena su istraživanja i analize karstnih sistema dela centralnog Balkana (Srbije, Crne Gore i Savskog sliva Bosne i Hercegovine), kako bi se evaluirao ovaj dragoceni resurs. Analize su vršene na primerima karstnih sistema vrela Perućac, Seljašnica, Mokra i Mlava (Srbija), Oko Bijele i Rijeka Crnojevića (Crna Gora) i vrelo Bosne (Bosna i Hercegovina), kao i na regionalnom ...karstni sistem, podzemna voda, pritisci na kvantitet i kvalitet, menadžment podzemnih vodnih resursaVeljko J. Marinović. Regionalna karakterizacija karstnih podzemnih voda dela centralnog Balkana u funkciji njihovog održivog korišćenja i menadžmenta, Beograd : [V. Marinović], 2022
-
Application of cross-correlation analysis of karst spring discharges with the purpose of understanding karst hydrogeology systems
Veljko Marinković, Vesna Ristić Vakanjac, Saša Milanović, Ljiljana Vasić, Branislav Petrović, Petar Vojnović (2024)Када посматрамо одређену издан, прихрањивање подземних вода ове издани се може вршити 1. на рачин падавина, 2. на рачун површинских токова у деловима где постоји добра хидрауличка веза подземних и површинских вода и где је ниво површинског тока на вишој коти од нивоа подземних вода, или понирањем површинских вода, и 3. на рачун подземних вода других типова издани. Код издани формираних у оквиру карстних масива, прихрањивање ових вода најчешће се врши инфитрацијом падавина и понирањем површинских токова тамо где ...Veljko Marinković, Vesna Ristić Vakanjac, Saša Milanović, Ljiljana Vasić, Branislav Petrović, Petar Vojnović. "Application of cross-correlation analysis of karst spring discharges with the purpose of understanding karst hydrogeology systems" in Conference proceedings, Faculty of Technical Sciences, Novi Sad (2024). https://doi.org/10.24867/SYMOPIS-2024-51-074
-
Application of cross-correlation analysis of karst spring discharges with the purpose of understanding karst hydrogeology systems
Vesna Ristić Vakanjac, Veljko Marinović, Ljiljana Vasić, Saša Milanović, Branislav Petrović, Petar Vojnović (2024)Када посматрамо одређену издан, прихрањивање подземних вода ове издани се може вршити 1. на рачин падавина, 2. на рачун површинских токова у деловима где постоји добра хидрауличка веза подземних и површинских вода и где је ниво површинског тока на вишој коти од нивоа подземних вода, или понирањем површинских вода, и 3. на рачун подземних вода других типова издани. Код издани формираних у оквиру карстних масива, прихрањиванје ових вода најчешће се врши инфитрацијом падавина и понирањем површинских токова тамо где ...Vesna Ristić Vakanjac, Veljko Marinović, Ljiljana Vasić, Saša Milanović, Branislav Petrović, Petar Vojnović. "Application of cross-correlation analysis of karst spring discharges with the purpose of understanding karst hydrogeology systems" in 51. Simpozijum o operacionim istraživanjima, Tara, 16-19.9.2024, Faculty of Technical Sciences, Novi Sad (2024). https://doi.org/https://doi.org/10.24867/SYMOPIS-2024-51-074
-
Attenuation of Bacteriological Contaminants in Karstic Siphons and Relative Barrier Purifiers: Case Examples from Carpathian Karst in Serbia
L. Vasić, Z. Stevanović, S. Milanović, B. Petrović. "Attenuation of Bacteriological Contaminants in Karstic Siphons and Relative Barrier Purifiers: Case Examples from Carpathian Karst in Serbia" in Hydrogeological and Environmental Investigations in Karst Systems, Springer Berlin Heidelberg (2015). https://doi.org/10.1007/978-3-642-17435-3_51
-
Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
-
Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina (2013)Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina. "Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)" in Book of abstracts of the International Symposium on Hierarchical Flow Systems in Karst Regions KARSTFLOW 2013, Budapest, :IAH (2013): 132
-
Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans
Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović. "Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans" in Carbonates and Evaporites, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s13146-021-00754-1
-
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
-
Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans
Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović. "Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans" in Carbonates and Evaporites, Springer Science and Business Media LLC (2022). https://doi.org/10.1007/s13146-021-00754-1
-
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
-
Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata
Dejan N. Radivojević (2014-12-30)Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamikaDejan N. Radivojević. "Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-30)
-
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)