Претрага

Упит dcterms_subject_txt:Library and Information Sciences,Computer Science Applications

2436 items

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Olivine websterite veins cutting the Rabrovo serpentinites (South Macedonia): New evidence of the arc setting of the East Vardar ophiolites?

    Boev Blažo, Prelević D., Božović M., Erić Suzana, Cvetković Vladica (2013)

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... in Tables S1–S11 (Supporting information, ESI). The observed pseudo-first order rate constant, kobs, as a function of total ligand concentration is given by Eq. (1). kobs ¼ k2½L� þ k1½Cl � � ð1Þ Direct nucleophilic attack is characterized by the rate constants k2, and the reverse reactions are presented ...
    ... in Tables S1-S11 (Supporting information, ESI). The observed pseudo-first order rate constant, Kops, as a function of total ligand concentration is given by Eq. (1). Kops = ko[L] + ky [Cl] (1) Direct nucleophilic attack is characterized by the rate constants ky, and the reverse reactions are presented ...
    ... Faculty of Science, R. Domanovica 12, 34000 Kragujevac, Serbia ARTICLE INFO ABSTRACT Article history: Received 29 July 2011 Received in revised form 28 October 2011 Accepted 9 November 2011 Available online 19 November 2011 Substitution reactions of the monofunctional complexes [(TL®")PdCl]* and [Pd(tpdm)Cl]* ...

  • Речници у дигиталном добу - информатичка подршка за српски језик

    Биљана Рујевић (2022)
    Морфолошки речници српског језика представљају електронски језички ресурс који има значајну историју развоја и коришћења за потребе обраде природних језика. С обзиром на то да су чувани у облику датотека чији је број нарастао па је самим тим управљање речницима постало отежано јавила се потреба за смештањем информација из речника у облик лексикографске базе. Како би се омогућио симултани рад на развоју речника за више корисника јавила се потреба за веб-апликацијом заснованој на лексикографској бази. Како би се размотриле ...
    електронски речници, лексикографска база података, лексички ресурси, српски језик

  • Information systems for the environment

    Damjanović Zvonko, Štrbac Nada, Šerifi Veis, Ranđelović Dragana (2011)

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... University of Sassari, School in Natural Science, Sassari. 178. Yanagi T. 2011. Island Arc Volcanic Rocks and the Upper Continental Crust. In: Yanagi T (eds). Arc Volcano of Japan: Generation of Continental Crust from the Mantle. Lecture Notes in Earth Sciences 136. Berlin Heidelberg: Springer – Verlag ...
    ... of Sciences and Arts, Belgrade, pp. 25 – 40. 79. Kawamoto T, Nakajima J, Reynard B, Toh H. 2015. Special issue ‘Geofluid processes in subduction zones and mantle dynamics’. Earth, Planets and Space 67: 46 – 53. 80. Kemp AIS, Hawkesworth CJ. 2004. Granitic Perspectives on the Generation and Secular ...
    ... subduction zone magmas: concentrations and fluxes based on melt inclusion and volcanic gas data. Journal of Volcanology and Geothermal Research 140: 217 – 240. 172. Wedepohl KH. 1978. Handbook of Geochemistry. Springer-Verlag, Berlin. 173. Weiner ER. 2008. Applications of environmental aquatic chemistry: ...

  • Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)

    Dušan Polomčić, Dragoljub Bajić, Jelena Zarić (2015)
    A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...
    Water supply, Aquifer, Flow, Groundwater regime, Numerical modeling, Particle tracking
    ... geological information on the boreholes (Figure 2) and water-level fluctuations in observation wells. The conceptual model was designed according to the actual groundwater flow in the basin. It was simulated by three layers in the vertical section and one layered aquifer, where the horizontal and vertical ...
    ... radius of influence of Šumice was 700-750 m and that of the Jezero Well 350 m. ACKNOWLEDGMENTS Our gratitude goes to the Ministry of Education, Science and Technological Development of the Republic of Serbia for financing projects OI-176022, TR-33039 and III-43004. REFERENCES 1. Hajdin, B. ...
    ... time to the wells and represented the third and widest sanitary protection zone [13]. Particle tracking can be used for various purposes. The backward particle tracking method with an uncertainty analysis of porosity, applying a Monte Carlo approach, with Geographic Information System (GIS) support ...

  • Some examples of interactions between certain rare earth elements and soil

    Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski (2021)
    Freundlich adsorption isotherm, sequential extraction, metallic ions, ICP-OES
    ... EARTH ELEMENTS AND SOIL 5 quantity of adsorbate remaining in the equilibrium solution following adsorption, whereby the distribution between the liquid and solid phase of adsorption solution for different concentrations is presented. Most often by adsorption isotherms the information on adsorption ...
    ... (https://doi.org/10.1177%2F0734242X04042146) 23. J. U. Keller, R. Staudt, (2005). Gas adsorption equilibria: experimental methods and adsorptive isotherms. Springer Science & Business Media, 1-402 (ISBN 978-0-387- 23598-1) 24. A. S. Erses, M. A. Fazal, T. T. Onay, W. H. Craig, J. Hazard. Mater. 121 ...
    ... spread use and as the consequence of the widespread use there is an increased quantity of waste that is disposed and often in the inappropriate manner and ends up in the nature, disrupting the resources such as water and soil. The contami- nation occurs due to insufficient legal regulations and controls ...

  • Simultaneous determination of long-term average fluxes of solar pp-neutrinos and cosmic ray muons. Astrophysics and Space Sciences Transactions (ASTRA).

    Aničin Ivan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Franz, Bruchle W., Đurčić Zoran, Faestermann, T., Henning, W.F., Jelenković Rade, Niedermann S., Pejović Vladan, Vermeesch P., Weiss A. (2010)

  • Integracija heterogenih tekstualnih resursa

    Ranka Stanković, Ivan Obradović (2007)
    U radu je opisan pristup integraciji heterogenih tekstualnih resursa za srpski jezik uz pomoć jednog kompleksnog softverskog alata, razvijenog specijalno za ove potrebe. Opisani su struktura i osnovne komponente razvijenog sistema. Iznete su i mogućnosti unapređivanja resursa međusobnom razmenom informacija, koje pruža razvijeno integrisano okruženje. Konačno, opisana je i mogućnost primene integrisanih heterogenih resursa za proširenje upita, kao i pretraživanje tekstova uopšte, a naznačeni su i neki od pravaca daljeg razvoja.
    ... Romanian Journal on Information Science and Technology. Bucureş of the Romanian academy. t al. 2003 – Vitas, D. et al. (2003): Processing Serbian Written Texts: An Overview of Resources an (Hg.): Proceedings of the International Workshop on Balkan Language Resources and Tools. Thessaloniki, November ...
    ... opens new possibilities for processing of texts, namely resource combining, in particular the combining of morphological information from the dictionaries and semantic information from the wordnet. Finally, we explain how integrated heterogeneous resources can be used for query expansion, as well as ...
    ... morphological dictionaries for Serbian, the Serbian wordnet and the multilingual ontology of proper names Prolex. We describe the possibilities WS4LR offers for enhancement of these resource through mutual interchange of information. We also describe its even more important feature which opens ...

  • Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication

    Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović (2023)
    Ammonites, Taxonomy, Lower Berriasian, Getic, Northern Tethys, Serbia
    ... collected in 2007 by D. Rabrenović. Further material was collected in September 2021 and May 2022 by the authors of this contribution and colleagues from Charles University in Prague, the Czech Academy of Sciences and the Geologic Survey in Brno. The studied collection (359 pieces) consists only of ...
    ... L. (Ed.), Late Jurassic — Early Cretaceous fauna, biostratigraphy, facies and deformation history of the carbonate formations in the Gerecse and Pilis Mountains (Transdanubian Range, Hungary). Institute of Geo- sciences, University of Szeget, GeoLitera Publishing House, Szeget, pp. 207—292. Frau ...
    ... During 2021 and 2022, several field trips visited the mentioned section as a result of joint research between experts from the Czech Republic (Geological Institute of the Academy of Science of the Czech Republic, VŠB-Technical University of Ostrava, Charles Uni- versity in Prague and the Czech ...

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... 54178 Å radiation and a 40 kV, 30 mA. The XRD pattern was recorded over a 2θ interval of 4–70°, with a step size of 0.02° and the fixed counting time of 1 s per step. X­ray diffractograms of 42 samples were subjected to quantitative mineralogical analysis using the FullProf computer program (RODRÍ ...
    ... Potential applications of the classification systems.– Fuel, 88, 246–254. doi: 10.1016/j.fuel.2008.09.005 VASSILEV, S.V., VASSILEVA, C.G., KARAYIGIT, A.I., BULUT, Y., ALASTUEY, A. & QUEROL, X. (2005): Phase­mineral and chemical composition of composite samples from feed coals, bottom ashes and fly ashes ...
    ... Geological Survey and the Croatian Geological Society 1. INTRODUCTION Lignites of Upper Miocene age are the most important energy source in Serbia. Almost all lignite production (90%) from the Kolubara and Kostolac basins is used in thermal power plants (TPP), (EPS, 2018). Information on the content ...

  • Mathematical modeling to define catchment size and real evapotranspiration (case study: Andrića karst spring, Western Serbia)

    Marina Čokorilo Ilić, Vesna Ristić Vakanjac, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Water resources in karst are extremely important sources of drinking water supply. The quality of groundwater formed in karst aquifers is generally high and in most cases only chlorination is required. However, from a hydrogeological perspective, these water resources are the least studied. Often only basic information is available on catchment size, groundwater reserves (dynamic and static, if any) and groundwater balance. Detailed hydrogeological investigations and long-term monitoring of karst spring discharges are needed to acquire such information. In ...
    karstno vrelo, veličina sliva, stvarna evapotranspiracija, karstno vrelo Andrića

  • Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa

    Mirjana V. Banković (2018-07-13)
    Profitabilna eksploatacija sve složenijih ležišta je težak zadatak koji zavisi odtemeljnog procesa analize, planiranja i projektovanja rudnika. Izvodljiv strateškiplan mora da zadovoljava društvena, regulatorna, tehnološka, geometrijska iekonomska ograničenja. Kako bi se postigao osnovni cilj, odnosno profitabilnost iodrživost rudarskog projekta na duži period, neophodno je unapređenjematematičkih modela i informatičke podrške procesima planiranja i optimizacijekoji će omogućiti efikasnu realizaciju ovih ciljeva...
    tehnološki model, integralni model, planiranje, optimizacija,utovarno-transportni sistem, neto sadašnja vrednost projekta
    ... Optimum design of an open pit. Application of Computer Methods in the Mineral Industry, Proc. of 10th International Symposium, Johannesburg, SA, 145-147. Picard, J.-C., 1976, Maximal closure of a graph and applications to combinatorial problems. Management science, 22 (11), 1268-1272. Rakonjac, M., Jevtić ...
    ... Efficiency of Thermal Power Plants Through Mine Coal Quality Planning and Control. Thermal Science, (Online), DOI: 10.2298/TSCI170605209B Barnes, R. J., 1982, Optimizing the ultimate pit. PhD Thesis, Colorado School of Mines. Arthur Lakes Library. Basçetin, A., 2003, A decision support system for optimal equipment ...
    ... Journal of The Southern African Institute of Mining and Metallurgy, 109 (7), 433-439. Ferreira, F., Chaves, A., Delboni, H., 1992, Conditional simulation method for design of blending piles. Proceedings of 23th International Symposium on Computer Applications in the Mineral Industries, 1992 Phoenix. 615–623 ...

  • Present Situation and Alternative Water Supply Solutions for Northern Vojvodina (Serbia)

    Bojan Hajdin, Vesna Ristić-Vakanjac, Dušan Polomčić (2020)
    The northern part of the Autonomous Province of Vojvodina is situated in the central and southeastern sectors of the Pannonian Basin. Drinking water supply is provided by groundwater abstraction from depths of 60 to 200 m. The quality of that water is poor, especially due to high concentrations of arsenic which most water supply systems do not remove. Current planning documents call for the construction of large regional water supply schemes on the banks of the Danube and Tisa ...
    podzemne vode, regionalni sistem vodosnabdevanja, arsen

  • 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

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    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, ANFIS