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863 items
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Application of auto-cross-regression models from the shortterm forecast of karst spring discharges
Vesna Ristić Vakanjac, Veljko Marinković, Ljiljana Vasić, Saša Milanović, Branislav Petrović, Petar Vojnović (2024)Човек je одвајкада је покушавао да пронађе начина да предвиди одређене појаве у природи. Како су људске насеобине углавном биле везане за обале река, предикција поплаве је била од великог значаја за њен опстанак. Касније, развојем цивилизације, а нарочито са индустријском и технолошком револуцијом, отпочиње се са развојем одређених модела којима се на основу улазних компоненти срачунава излазна величина која је од интереса, а у овом случају је то протицај или водостај реке или извора (врела). Најједноставнији модели су ...Vesna Ristić Vakanjac, Veljko Marinković, Ljiljana Vasić, Saša Milanović, Branislav Petrović, Petar Vojnović. "Application of auto-cross-regression models from the shortterm forecast of karst spring discharges" in Conference proceedings, Faculty of Technical Sciences, Novi Sad (2024). https://doi.org/10.24867/SYMOPIS-2024-51-075
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Wordnet Development Using a Multifunctional Tool
Ivan Obradović, Ranka Stanković (2007)In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...Ivan Obradović, Ranka Stanković. "Wordnet Development Using a Multifunctional Tool" in Proceedings of the International Workshop Computer Aided Language Processing (CALP) '2007, Borovets, Bulgaria, September 2007, - (2007)
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Phase relations and physical indicators of municipal waste from old landfills in Serbia
Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science... the four-phase system is proposed and it consists of: gaseous, liquid, fibrous and sticky material phase similar to paste (Machado et al., 2008). Within the fibrous phase, authors have included plastic materials, textile and other similar materials. Thus defined four-phase system divides solid ...
... v m*/m* v= V Zw.J0 content -% V Yw Volume gas a m*/m* a _&_ n_w content -% a Saturation g m*/m* S =&=X degree ii -% ii Vp The three-phase system for municipal waste does not take into account a fact that the composition and thus the volume of organic materials, i.c. part of a solid phase ...
... materials by type and shape but does not take into account their temporal variability. A different proposition of four-phase municipal waste system consists of: inert — solid (s), organic (o), liquid (v) and gaseous (a) phase (Figure 3). Inert phase consists of non-degradable materials such ...Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić. "Phase relations and physical indicators of municipal waste from old landfills in Serbia" in Japanese Geotechnical Society Special Publication, The Japanese Geotechnical Society (2021). https://doi.org/10.3208/jgssp.v09.cpeg016
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Digitalizacija u rudarstvu: Kreiranje sistema za efikasno poslovno izveštavanje
Proces donošenja odluka u oblasti rudarstva i geologije uslovljen je blagovremenim posedovanjem kvalitetnih podataka i informacija. Kompleksnost rudarskih procesa nalaže prikupljanje podataka na dnevnom odnosno na smenskom nivou. Podaci kao takvi bez analitičkog pristupa nisu dovoljni. Kako bi pristup podacima bio brz i efikasan neophodno je posedovanje adekvatnog digitalnog rešenja uz adekvatne centralizovane baze podataka. U ovom radu je dat pregled trenutne pozicije rudarstva sa aspekta digitalne transformacije kao i predlog jednostavnog prototipa u obliku digitalnog sistema za poslovno ...... A.C. (2004). Information technology and the good life. Information system research, s. 687-692. [5] de Sousa, J. S., Rocha, L. O., & de Castro, R. M. (2016). Digital transformation applied to Bauxite and Alumina Business System: BABS 4.0. In Proceedings of 37th International ICSOBA Conference, pp ...
... Zlatibor, 9-12 October 2024 DIGITALIZACIJA U RUDARSTVU: KREIRANJE SISTEMA ZA EFIKASNO POSLOVNO IZVEŠTAVANJE DIGITALIZATION IN MINING: CREA TING A SYSTEM FOR EFFICIENT BUSINESS REPORTING Đenadić S.!, Mirković A?, Rupar Vž Apstrakt Proces donošenja odluka u oblasti rudarstva i geologije uslovljen ...
... current position of mining from the perspective of digital transformation, as well as a proposal for a simple prototype in the form of a digital system for business reporting and analytics. Keywords: mining, digital transformation, databases. 1. Uvod Rudarstvo i geologija podrazumevaju pronalaženje ...Stevan Đenadić, Aleksandar Mirković, Veljko Rupar . "Digitalizacija u rudarstvu: Kreiranje sistema za efikasno poslovno izveštavanje" in XVI Međunarodna rudarska konferencija OMC 2024, Zlatibor, 9 - 12. oktobar 2024, Jugoslovenski komitet za površinsku eksploataciju (2024)
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The analysis of the geothermal energy capacity for power generation in Serbia
Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk. "The analysis of the geothermal energy capacity for power generation in Serbia" in Thermal Science, National Library of Serbia (2013). https://doi.org/10.2298/TSCI120215033S
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Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”
Vladimir Čebašek, Veljko Rupar (2018)Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".... ELEMENATA Abstract: Open-pit mine has been formed by bauxite exploitation from "Podbraćan" ore body with a final slope maximum height of 280 m. Regular control of the open-pit mine final slope current state had determined that the safety factor is Fs = 1.71 - 1.85, indicating that there is a possibility of ...Vladimir Čebašek, Veljko Rupar. "Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”" in Mining and Geology Today, II international symposium, Belgrade, 04 - 05.12.2018., Rudarski institut, Balkanska akademija nauka, Akademija inženjerskih nauka Srbije (2018). https://doi.org/10.25075/SI.2018.17
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Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)
Nenad Marić, Jana Štrbački, Sanja Mrazovac Kurilić, Vladimir P. Beškoski, Zoran Nikić, Snežana Ignjatović, Jovana Malbašić (2020)Aquifer contamination by petroleum hydrocarbons leads to measurable changes of groundwater hydrochemistry, primarily due to the microbiological activity. This study analyzes this phenomenon at an historical kerosene-contaminated site in Vitanovac (central Serbia). Due to the long-term hydrocarbon contamination and exposure to aerobic and anaerobic biodegradation mechanisms, the lowest concentrations of O2, NO3−, and SO42− (electron acceptors) and the highest concentrations of Mn and Fe (products of microbial metabolic activity) overlap. The terminal redox-accepting processes in groundwater ranged from oxygen ...Nenad Marić, Jana Štrbački, Sanja Mrazovac Kurilić, Vladimir P. Beškoski, Zoran Nikić, Snežana Ignjatović, Jovana Malbašić. "Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)" in Environmental Geochemistry and Health, Springer Netherlands (2020). https://doi.org/https://doi.org/10.1007/s10653-019-00462-9
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Microstructural and magnetic properties of electrospun hematite/cuprospinel composites
Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic MaterialsMira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić. "Microstructural and magnetic properties of electrospun hematite/cuprospinel composites" in Journal of Materials Science: Materials in Electronics, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s10854-020-03526-0
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Balance between tectonics and sedimentation during geodynamic evolution of the Adria-Europe convergence zone in central Serbia
Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Tamara Bogdanović. "Balance between tectonics and sedimentation during geodynamic evolution of the Adria-Europe convergence zone in central Serbia" in EGU General Assembly 2021, Vienna, Austria, 19.-30.4.2021., EGU (2021)
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji
Ljiljana R. Kolonja (2016-09-23)Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...Ljiljana R. Kolonja. "Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-23)
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A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia
When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...Boban Pavlović, Dejan Ivezić, Marija Živković. "A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia" in Energy Reports, Elsevier BV (2021). https://doi.org/10.1016/j.egyr.2021.02.072
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Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić. "Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)" in Annales Societatis Geologorum Poloniae (2021). https://doi.org/10.14241/asgp.2021.16
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... C. Mackenzie, editor). London, UK. Mineralogical Society. Grim R.E. & Rowland R.A. (1944) Differential thermal analysis of clays and shales, control and prospecting method. Journal of the American Ceramic Society, 27, 65–76. Joussein E., Petit S., Churchman J., Theng B., Righi D. & Delvaux B ...
... Ceramic Tile Quality. Castellon, Spain, Official Chamber of Commerce, Industry and Navigation. Foldvari M. (2011) Handbook of the thermogravimetric system of minerals and its use in geological practice. Occasional Papers of Geological Institute of Hungary, 213, 180. Frost R.L., Van Der Gaast S.J ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia
This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol. "Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/10.31577/GeolCarp.72.1.2
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Impact of river bank filtration on alluvial groundwater quality: A case study of the Velika Morava River in central Serbia
Branislav Petrović, Vladimir Živanović (2016)филтрација кроз обалске и седименте речног корита, алувијални седименти, прихра- њивање подземних вода, квалитет подземних вода, Велика МораваBranislav Petrović, Vladimir Živanović. "Impact of river bank filtration on alluvial groundwater quality: A case study of the Velika Morava River in central Serbia" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2016). https://doi.org/10.2298/GABP1576085P
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Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić. "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, IOP Publishing (2019). https://doi.org/10.1088/1361-6528/ab3ca2
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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Опасности и штетности код производње текстилних компоненти за моторна возила
Мара Павловић (2024)Рад се заснива на препознавању опасности и штетности којим су изложени запослени у једном привредном друштву чија је делатност производња звучне и топлотне изолација и заштите од вибрација за моторна возила. Ради истраживања и реализације постављених циљева, завршни рад је структуиран у три целине. У првом делу рада описан је технолошки процес и карактеристике материјала при производњи изолационих материјала од текстилног отпада и производњи полиуретанске пене. У оквиру другог дела описане су опасности и штетности којим су изложени запослени при обављању својих ...... (cHHKa 4). Tako ce JnonaTHo pamuciijbaHa BJaKHa IIHeyMaTCKHM TpaHCIIOPpTOM BoJIe JO Airlay System-a. Cmaka 3: Bazte pantuebjJbaHor naMyKa Cnuka 4: nojaTHo panruetmjbaHa BJIaKHa Ha nyry no Airlay System-a, nocroju nerekTop Merajna (cnHKa 5) KojaH y cJryuajy a upemoa3Ha MeTaHHH JČO y TOKy pamu ...
... OHCeucHH BHIHaK MaTcpHjajJila HOCJC MemHmaMba Ca CMOJIOM, a Hpe nehu 3a TIOJIHMepH3alHjy. Crmaka 6: VnasaHa JemHuma Airlay System-a . CnmakKa 7: VmaaHa jenuHuma Airlay System-a V yna3Hoj Je/UMHHIUH Ce MO)KC HOJIeIaBaTH HHBO MaTepHJaja KOJH Ce Ty HaJ1a3H, anmni oOHuHo ToO HHje BHmie OJL 50 kg pam ...
... nocrpojeby. PaappcraBabbe Ce BPpIH IipeMa HOPpeKJIy, KapakTepy H KaTeropuju. 4. IIpowaBojma maMyuHor (pumma ce o0aBJba Ha onpeMuH Horizontal Airlay system model Lap Formair HS npouasobaua CORMATEX s.r.1l. Hoceha koHcrpykiaja MamHHe Je MeTajiHa H OJTOBapajyhe Je moBpmmHcKH aamrrHheHa. CraOMMHoO cc ...Мара Павловић. Опасности и штетности код производње текстилних компоненти за моторна возила, 2024
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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019