Претрага
1018 items
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Model upravljanja investicionim projektima otvaranja površinskih kopova uglja
Cvjetko P. Stojanović (2015-04-27)Brze promene u okruženju pred rukovodioce postavljaju mnogobrojne zahteve,pre svega, one koji se tiču ostvarenja ciljeva u zadatom vremenu i raspoloživimsredstvima što zahteva fleksibilan pristup u organizovanju aktivnosti i efikasnost unjihovom sprovođenju.Upravljanje projektima, bilo koje vrste, suštinski, predstavlja veoma složenproces odlučivanja uslovljen velikim brojem ulaznih faktora. Ti faktori treba daomoguće fokusiranje na prioritete i ciljeve, praćenje realizacije, fleksibilnost uprevazilaženju teškoća, prilagođavanje promenama, te kontrolu nad ostvarenimrezultatima. Ovakav način upravljanja zahteva korišćenje proverenih tehnika i alata tetimski rad angažovanih na ...Cvjetko P. Stojanović. "Model upravljanja investicionim projektima otvaranja površinskih kopova uglja" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-27)
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Model upravljanja investicionim projektima otvaranja površinskih kopova uglja
Cvjetko P. Stojanović (2015-04-27)Brze promene u okruženju pred rukovodioce postavljaju mnogobrojne zahteve,pre svega, one koji se tiču ostvarenja ciljeva u zadatom vremenu i raspoloživimsredstvima što zahteva fleksibilan pristup u organizovanju aktivnosti i efikasnost unjihovom sprovođenju.Upravljanje projektima, bilo koje vrste, suštinski, predstavlja veoma složenproces odlučivanja uslovljen velikim brojem ulaznih faktora. Ti faktori treba daomoguće fokusiranje na prioritete i ciljeve, praćenje realizacije, fleksibilnost uprevazilaženju teškoća, prilagođavanje promenama, te kontrolu nad ostvarenimrezultatima. Ovakav način upravljanja zahteva korišćenje proverenih tehnika i alata tetimski rad angažovanih na ...Cvjetko P. Stojanović. "Model upravljanja investicionim projektima otvaranja površinskih kopova uglja" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-27)
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Numerical simulation of the Late Jurassic closure of the Vardar Tethys
... [Gerya et al., 2000;Gerya&Yuen, 2003]. The 2D model consists of two continental plates separated by two oceanic slabs connected at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed ...
... updated results of our ongoing research on constraining geodynamic conditionsassociated with the final closure of the Vardar branch of the Tethys Ocean by means of applicationof numerical simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis ...
... eventually transitions into an oceanic closure and subsequent continental collisionprocesses. In the scope of our study numerical simulations are performed by solving a set of partialdifferential equations: the continuity equation, the Navier-Stokes equations and the temperatureequation. To this end we used ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "Numerical simulation of the Late Jurassic closure of the Vardar Tethys" in EGU General Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-9893
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2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys
... [Gerya et al., 2000;Gerya&Yuen, 2003]. The 2D model consists of two continental plates separated by two oceanic slabs connected at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed ...
... updated results of our ongoing research on constraining geodynamic conditionsassociated with the final closure of the Vardar branch of the Tethys Ocean by means of applicationof numerical simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis ...
... eventually transitions into an oceanic closure and subsequent continental collisionprocesses. In the scope of our study numerical simulations are performed by solving a set of partialdifferential equations: the continuity equation, the Navier-Stokes equations and the temperatureequation. To this end we used ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys" in EGU General Assembly 2020, Copernicus GmbH (2020). https://doi.org/10.5194/egusphere-egu2020-5919
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Reliability of lines by dewatering wells
Pavlović Vladimir, Šubaranović Tomislav, Polomčić Dušan. "Reliability of lines by dewatering wells" in Proceedings of VI International Conference COAL, Zlatibor: (2013): 233-245
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Noise induced coherent oscilations in Fitz Hugh-Nagumo excitable systems influenced by coupling delay
Grozdanović Ines (2011)Grozdanović Ines. "Noise induced coherent oscilations in Fitz Hugh-Nagumo excitable systems influenced by coupling delay" in Proceedings of III International Congress of Serbian Society of Mechanics, Vlasina lake: (2011)
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Foundation reinforcement by micropiles
Ćorić Slobodan, Rakić Dragoslav (2015)Ćorić Slobodan, Rakić Dragoslav. "Foundation reinforcement by micropiles" in iNDiS 2015: Planning, design, construction and renewal in the civil engineering – International Scientific Conference no. 13, Novi Sad:Univerzitet u Novom sadu Fakultet tehničkih nauka (2015): 382-390
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Noise induced coherent oscilations in Fitz Hugh-Nagumo excitable systems influenced by coupling dela
Grozdanović Ines (2011)Grozdanović Ines. "Noise induced coherent oscilations in Fitz Hugh-Nagumo excitable systems influenced by coupling dela" in III International Congress of Serbian Society of Mechanics, Vlasinsko jezero: (2011)
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Evaluation And Perspectives Of Underground Coal Mines In Serbia
... as Analytical Hierarchy Process (AHP), for the purpose of evaluating and ranking of the mines operated by PCUCE. Criteria for evaluation Initial step for evaluation of mines operated by PCUCE is to select criteria which will be used in AHP. For this purpose following criteria are selected: ...
... evaluation of PCUCE coal mines by using the Analytic Hierarchy Process method, as described in following chapter. AHP evaluation of underground coal mines in Serbia The Analytic Hierarchy Process (AHP) is a multi-criteria decision-making approach introduced by Saaty [4]. The AHP method enables ...
... measure the consistency of pairwise comparison judgments, the consistency ratio proposed by Saaty [7] is used. A consistency ratio is calculated for the pairwise comparison matrix. The upper limit proposed by Saaty for this ratio is 0.10. In a case where the consistency ratio calculated for the ...Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić. "Evaluation And Perspectives Of Underground Coal Mines In Serbia" in 7th Balkan Mining Congress Preceedings - BalkanMine2017, Prijedor, 11-13. oktobar 2017., Banjaluka : University of Banjalika, Faculty of Mining, RS, BiH (2017)
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Geostatički proračuni sanacije klizišta šipovima
U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova... klizišta i šipova GEOSTATIC CALCULATIONS FOR LANDSLIDE STABILIZATION BY PILES ABSTRACT In the paper are presented, on the basis of the geotechnical investigations results, geostatic calculations for landslide stabilisation by vertical piles. The calculation methodology is complex, because it is ...
... The lateral resistance of piles is calculated by Brinch Hansen method. It includes three-dimensional effects of surrounding soil and can be applied in complex geological conditions which are very often in Serbia. The landslide stability is analysed by appropriate limit equilibrium methods. In proposed ...
... and author profiles for this publication at: https://www.researchgate.net/publication/340660377 GEOSTATIC CALCULATIONS FOR LANDSLIDE STABILIZATION BY PILES Conference Paper · November 2019 CITATIONS 0 READS 25 3 authors: Some of the authors of this publication are also working on these related ...Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević. "Geostatički proračuni sanacije klizišta šipovima" in Zbornik radova osmog naučno-stručnog međunarodnog savetovanja - Geotehnički aspekti građevinarstva, Savez građevinskih inženjera Srbije, (2019)
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)
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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
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Foreign molecules and ions in beryl obtained by infrared and visible spectroscopy
Jelić I., Logar M., Milošević M.. "Foreign molecules and ions in beryl obtained by infrared and visible spectroscopy" in Geophysical Research Abstracts Geophysical Research Abstracts 19, Vienna, Austria:Copernicus Publications (2017): 2479
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Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy
Tomić Ljubiša, Kovačević Aleksandar, Damnjanović Vesna, Ocmokrović Predrag. "Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy" in Measurement 46, Amsterdam, Netherlands:ELSEIVER VB (2013): 2263-2268
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Characterization of periodic cylindrical subsurface defects by pulsed thermography
Dikic Goran, Tomić Ljubiša, Damnjanović Vesna, Milanović Bojan. "Characterization of periodic cylindrical subsurface defects by pulsed thermography" in Surface Review and Letters 22 no. 2, Singapur:World Scientific Publishing Co. Pte. Ltd. (2015): 11
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми... systems containing alkyl polyglucoside has been studied by some authors [21-23]. In the last decades, a lot of papers were pub- lished concerning many aspects of polymers in micro- emulsions, such as solubilization efficiency boosting by amphiphilic polymers in microemulsions [24-26]. The influence ...
... is a measure for the phase inversion temperature (//7). The phase diagrams were recorded by success- ively adding water and oil to the initial water-oil-surf- actant mixture. The samples were prepared by weigh- ing appropriate amounts of components (1:1 ratio of oil to water) on 0.1 mg precision ...
... coexists with excess oil (denoted by 2O). At higher temperatures the microemulsion coexists with excess water (2Q ). This system exhibits a strong tendency to form liquid crystals. Its phase diagram shows a large area of liquid crystals (LC) surrounded by microemulsion (regions 10 and 1#*) ...Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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Status and new data of the geochemical determination pp/neutrino flux by LOREX
Pavićević Miodrag, Amthauer Georg, Aničin Ivan, Boev Blažo, Jelenković Rade. "Status and new data of the geochemical determination pp/neutrino flux by LOREX" in NEUTRINO 2010 XXIV International Conference on Neutrino Physics and Astrophysics, Athens, Greece: (2010)
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Centenary anniversary of the theory of continental drift by Alfred Wegener and its significance for geosciences and the human society
Rundić Ljupko (2012)Rundić Ljupko. "Centenary anniversary of the theory of continental drift by Alfred Wegener and its significance for geosciences and the human society" in Bulletin of Natural History Museum no. 5, Beograd:Prirodnja;ki muzej, Beograd (2012): 21-33