Претрага

Упит dcterms_subject_txt:Sociology and Political Science

2375 items

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... Plants Through Mine Coal Quality Planning and Control. Thermal Science, 22(1B), pp.721-733, 2017 Benndorf J.: Investigating the variability of key coal quality parameters in continuous mining operations when using stockpiles. Advances in Orebody Modelling and Strategic Mine Planning I. AusiMM, 2011 ...
    ... efficiency of production. It is a complex task that is very often subject to very strict geometric and other practical mining restrictions. These limitations are particularly pronounced in open pit coal mines, and can significantly increase the degree of uncertainty of the mining project, or cause side ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf ...

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Синтеза, структурне и магнетне особине Ca1-xGdxMnO3 нанопрахова

    Milena Rosić (2014-12-05)
    У оквиру ове докторске тезе, испитиване су оптималне методе за добијањенанопраха – калцијум манганског оксида допираног јонима гадолинијума. Циљистраживања је испитивање одговарајућих прекурсора који су подесни да седобију чисти нано прахови манганита са перовскитском структуром, као имонофазни чврсти раствори са перовскитском структуром. Као подесан методкоришћена је модификована глицин нитратна метода, а од прекурсора нитрати иацетати одговарајућих метала. Модификација глицин нитратне методе се односина делимичну замену нитрата ацетатима, чиме је ублажена бурност реакције.Испитан је различити однос прекурсора, који дају наночестичне ...
    Наноструктурни материјали, Оксиди, Термална анализа,Рендгенструктурна анализа, Магнетна мерења.
    ... А. (2009): Synthesis and crystal structure of Ca(1-x)GdxMnO3, VIII Student's Meeteing, Processing and Application of Ceramics, December 2-5, Novi Sad, Serbia, Book of Abstracts, p.46. http://www.sciencedirect.com/science/journal/02728842 http://www.sciencedirect.com/science/journal/02728842 Прилог ...
    ... from first principles. Current Opinion in Solid State and Materials Science Vol. 16, No. 5, 227–242 Bocher L., Aguirre M. H., Robert R., Logvinovich D., Bakardjieva S., Hejtmanek J., Weidenkaff A. (2009): High-temperature stability, structure and thermoelectric properties of CaMn1-xNbxO3 phases, ...
    ... Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia Mogensen, M., Lybye, D., Bonanos, N., Hendriksen, P. V., Poulsen, F. W. (2004): Factors controlling the oxide ion conductivity of fluorite and perovskite structuredoxides. Solid State ...

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... časopisima sa SCI liste, Journal of Mining Science (Russian Academy of Sciences / Springer), Archives of Mining (Polish Academy of Siences), The Journal of the Southern African (Institute of Mining and Metallurgy), International Journal of Mining Reclamation and Environment (Taylor & Francis LTD), I ...
    ... 117, No. 1, 2008 , 24-31(8). 40. Huang, I.B., Keisler, J., Linkov, I., Multi-criteria decision analysis in environmental science: ten years of applications and trends, Science of the Total Environment 409, 2011, 3578–3594. 41. Ivković B., Popović Ž., Upravljanje projektima u građevinarstvu, Građevinska ...
    ... International Journal of Rock Mechanics and Mining Sciences (Pergamon-Elsevier Science LTD), poslednjih godina primetan je značajan porast radova na temu primene matematičko-modelskih alata u podršci odlučivanju i upravljanju u rudarstvu. Prema našem mišljenju, ovo je logična posledica razvoja ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... časopisima sa SCI liste, Journal of Mining Science (Russian Academy of Sciences / Springer), Archives of Mining (Polish Academy of Siences), The Journal of the Southern African (Institute of Mining and Metallurgy), International Journal of Mining Reclamation and Environment (Taylor & Francis LTD), I ...
    ... 117, No. 1, 2008 , 24-31(8). 40. Huang, I.B., Keisler, J., Linkov, I., Multi-criteria decision analysis in environmental science: ten years of applications and trends, Science of the Total Environment 409, 2011, 3578–3594. 41. Ivković B., Popović Ž., Upravljanje projektima u građevinarstvu, Građevinska ...
    ... International Journal of Rock Mechanics and Mining Sciences (Pergamon-Elsevier Science LTD), poslednjih godina primetan je značajan porast radova na temu primene matematičko-modelskih alata u podršci odlučivanju i upravljanju u rudarstvu. Prema našem mišljenju, ovo je logična posledica razvoja ...

  • Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)
    oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem
    ... Earth Sciences at Utrecht University, the Netherlands and the Faculty of Mining and Geology, University of Belgrade, Serbia during the PhD of Nemanja Krstekanić and is funded by the Netherlands Research Centre for Integrated Solid Earth Science (ISES). We thank Timotije Tufegdžić for his help during ...
    ... a continental collision. Science 189 (4201), 419–426. Morley, C.K., 2002. A tectonic model for the Tertiary evolution of strike–slip faults and rift basins in SE Asia. Tectonophysics 347, 189–215. Morley, C.K., 2007. Variations in Late Cenozoic–Recent strike-slip and oblique- extensional geometries ...
    ... ct Global and Planetary Change journal homepage: www.elsevier.com/locate/gloplacha https://doi.org/10.1016/j.gloplacha.2021.103714 Received 23 June 2021; Received in revised form 16 November 2021; Accepted 21 November 2021 mailto:n.krstekanic@uu.nl www.sciencedirect.com/science/journal/09218181 ...

  • Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone

    Aleksandar Luković (2021)
    Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...
    magnetit, hematit, hemoilmenit, Borska metalogenetska zona, porfirska ležišta
    ... Ni-Cu-PGE deposits worldwide and its application to mineral exploration. Journal of Geochemical Exploration, 145, 64-81. Bragg, W. H., (1915): XXX. The structure of the spinel group of crystals. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 30(176), 305–315. Breithaupt ...
    ... Vlisidis, A. C., (1955): Thermometric and petrogenetic significance of titaniferous magnetite. American Journal of Science, 253(9), 497–532. Buddington, A.F., (1956): Thermometric and petrogenetic significance of titaniferous magnetite - Reply. American Journal of Science, 254, 511-515. Buddington, A ...
    ... the acquisition of stable natural remanent magnetization. Earth and Planetary Science Letters, 224, 461-475. Kouzmanov, K., Moritz, R., Chiaradia, M., Fontignie, D., Ramboz, C., (2001): Sr and Pb isotope study of Au-Cu epithermal and porphyry-Cu deposits from the southern part of the Panagyurishte ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... control and monitoring activities in realization of the mineral strategy, mineral policy and the concept of sustainable development in the mineral industry of Serbia. Acknowledgments: This research was supported by the Serbian Ministry of Education and Science under the grant #TR 33039 and Republic ...
    ... login and activity information to identify responsibility for entered data and general system usage. 2.2.1. Stakeholder Data The application module dedicated to administration of data related to companies, institutions and organizations i.e., stakeholders and beneficiaries, in tabular and detailed ...
    ... for management of exploration and exploitation permits and works in the mineral resources field. GeolIEP represents a basis for archiving and efficient handling of vector, raster and related thematic alphanumeric content in one place, as well as efficient management and usage of mineral resources. ...

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... n, T.D.; research design and funding, acquisition, L.V.; project administration, L.V. AlI authors have read and agreed to the published version of the manuscript. Funding; This paper was written with support from the Ministry of Education, Science and Techno- logical Development, Serbia: Project ...
    ... Conceptualisation and methodology, L.V. and S.M.; data collection by all authors; data curation, L.V., S.M. and T.D.; software and formal analysis, L.V. and S.M.; writing:— original draft preparation, L.V.; writing—review and editing, L.V., S.M. and T.D.; visualisation, L.V. and S.M.; supervision ...
    ... system was reviewed and analyzed and conclusions were made related to the genesis of the karst groundwater and its circulation conditions. 2. Materials and Methods The Krupaja system represents one of the most complex karst systems within the Beljanica karst massif, and as such, it is of gr ...

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    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 diffraction
    ... N.; Radonjanin, V.; Malešev, M. Use of fly ash for embankment construction in road construction with and without binders. // Proceedings of the 5th Int. conference Civil Engineering - Science and Practice / Žabljak, 2014, pp. 1133-1138. Authors’ addresses Miloš Šešlija, MSc, BSc, Civ. ...
    ... with the lime content and the control sample is calculated and is 0,966, and with the cement content and the control sample is 0,954. After the calculated coefficient values it is found that the samples with the lime and the cement belong to the very strong correlation group and differ by 1 %. ...
    ... that contain the cement and the lime as the binder (of 2, 4 and 6 %) and with the control sample (100 % of the ash). The linear dependence was made for all variants, and after that the correlation coefficient was calculated. The correlation coefficient is characterized and classified in the specific ...

  • Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković (2021)
    The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...
    severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija
    ... Carpathian slab, exhumed the core of the mountains, and exposed the Late Cretaceous extensional contact between the Serbo–Macedonian/Supra- getic crystalline basements. Acknowledgements: This study was supported by the Minis- try of Education, Science and Technological Development of the Republic of Serbia ...
    ... direction/dip and stretching lineation trend/plunge taken in the Serbo-Macedonian and Supragetic Unit and at their contact (i.e., measurements taken in the tens of metres wide zone at the contact between the two tectonic units) were separately analysed. By combining map data and our field measurements ...
    ... Serbo-Macedonian Massif and Supragetic units. Sampling site V2. Parallel-polarized lights in c and cross-polarized lights in d and e. f — Top-NE normal sense of shear in the Supragetic unit in cross-polarized lights. Sampling site V1. 402 STOJADINOVIC, KRSTEKANIĆ, KOSTIĆ, RUŽIĆ and LUKOVIĆ GEOLOGICA ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... Education, Science, and Technological De- velopment of the Republic of Serbia (Contract numbers: 451-03-9/2021-14/200168, 451-03-9/2021- 14/200288, 451-03-68/2020-14/200026, and Project No. 451-03-01039/2015-09/05) and Österre- ichischer Austauschdienst, OeAD (Project No. SRB 18/2016 and Ernst Mach Grant ...
    ... Serbia. Geol. Carpath. 2008, 59, 345–361. 5. Reichl, C.; Schatz, M.; Zsak, G. World-Mining-Data. In Minerals Production; Federal Ministry of Science, Research and Economy: Vienna, Austria, 2016; Volume 31, pp. 129–130. 6. Serbia, the Country Of Lignite. Available online: https://naukakrozprice.rs/srb ...
    ... zation, I.K., K.S., and D.Ž.; methodology, I.K., A.B., G.G., N.A., S.T., D.Ž., and K.S.; formal analysis, I.K., A.B., N.A., S.T., and G.G.; investigation, I.K. and K.S.; writing—draft preparation, K.S. and I.K.; writing—review and editing, K.S. and A.B. All authors have read and agreed to the published ...

  • 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 ...
    ... via the internet, and which would at the same time provide for integration of WS4LR and the corpora of Serbian that are also partially accessible via the internet. A related public web service for query expansion is also planned, as well as a mobile application for PDA and cell phones. 18 ...
    ... of Belgrade for many years, as well a a necessity of creating an appropriate tool whi ance, usage, further development and integration. In this paper we outline the structure and main components of the system we developed under the name of WS4LR (WorkStation for Lexical Resources), which synchronously ...

  • 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
    ... 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 ...
    ... for the translation of a substantial part of the manuscript into English and H. Parent for English corrections. This study was supported by the Czech Science Foundation of the Czech Republic, project 20- 10035S. References Anđelković, M., Nikolić, P., 1974. Tectonic regionalization of the Carpa ...
    ... ropalaeontological, magnetostratigraphic and · geochemical methods. The Dedina section yields rich and diverse associations of macrofauna represented by cephalopods (ammonites, aptychi and belemnites), brachiopods, and bivalves. Among the most frequent and diverse are ammonites. The current study ...

  • An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction

    Dejan Ćebić, Nebojša Ralević, Marina Marčeta (2020)
    нелинеарна једначина, 16.ред конвергенције, оптималне методе, подељене разлике