Претрага
259 items
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Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... can be concluded that in the zone up to 400 m, which is equivalent to the depth of the borehole, the waters mix, i.e., they infiltrate into the discharge channel of deep thermal water. The physico-chemical characteristics of the groundwater (related to the seasons) of the Krupaja system are shown ...
... addition, most of the Krupaja Spring results fall below the LIML, with the exception of the sample taken in September 2014, which is above the LIML, indicating the delayed impact of heavy precipitation from the spring period, which represents a prolonged dis- charge of the system after the highest maximum ...
... 10of14 the Krupaja system and in the Beljanica Massif itself. However, by including the value of 6UC of thermal spring groundwater and &I9C in the host rock for the Beljanica Massif, it was calculated that the age of the water is 3990 years, which indicates that this water is the oldest in the system ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
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The Impact on Karst Aquifer Regimes Induced by a Surface Reservoir in Karst through Multiparametric Analyses (Reservoir Bileća—Herzegovina)
Saša Milanović, Ljiljana Vasić, Branislav Petrović, Tina Dašić, Veljko Marinović, Petar Vojnović (2023)Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and ConstructionSaša Milanović, Ljiljana Vasić, Branislav Petrović, Tina Dašić, Veljko Marinović, Petar Vojnović. "The Impact on Karst Aquifer Regimes Induced by a Surface Reservoir in Karst through Multiparametric Analyses (Reservoir Bileća—Herzegovina)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151511968
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Tectonothermal evolution of an asymmetric extensional system: the Juhor Mts in Central Serbia (Northern Serbomacedonian massif)
Miloš Radonjić, Uroš Stojadinović, Elco Luijendijk, Dejan Radivojević, Željko Golubović, Nikola Vuković (2018)... Quaternary sediments of the southernmost Pannonian Basin. The Juhor Mts, together with other uplifted areas along the Morava river corridor, such as Crni Vrh, Mojsinjske Mts, Poslonske Mts, comprise part of northern Serbomacedonian Massif. The Serbomacedonian Massif is ...
... etachments at the contact between the Carpathians and Dinarides—the Jastrebac Mountains of Central Serbia. Tectonophysics 710–711, 162–183. Matenco, L., Radivojević, D., 2012. On the formation and evolution of the Pannonian Basin: Constraints derived from the structure of the junction are ...
... Studies on recent tectonic setting of the Pannonian Basin argue for the internal deformation of principal tectonic units constituting the basement of the basin, rather than motion along the boundaries of large‐scale fully rigid blocks (Bada et al., 2007). The Juhor Mts in central Serbia represent ...Miloš Radonjić, Uroš Stojadinović, Elco Luijendijk, Dejan Radivojević, Željko Golubović, Nikola Vuković. "Tectonothermal evolution of an asymmetric extensional system: the Juhor Mts in Central Serbia (Northern Serbomacedonian massif)" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Чији је пример? Анализа лексичких обележја на примерима Речника САНУ
У овом раду поставља се питање: да ли се може утврдити ко је аутор неког текста уколико се анализирају искључиво његова лексичка обележја? Како бисмо покушали да добијемо одговор на ово питање, посматрали смо примере у оквиру речничког чланка појединачне лексеме Речника САНУ, који су забележени у пет томова (и то: I, II, XVIII, XIX и XX). Сваки пример је преузет из неког извора на шта упућују скраћенице, наведене у заградама. Од преко 5.000 понуђених извора, определили смо се ...... 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.bg.ac.rs 811.163 ...
... ourselves in this paper is the following: Is it possible to determine who is the author of a text by analyzing various lexical features? In order to try to get an answer, we observed examples that support lexical entries listed in five of the total of twenty volumes of the Dictionary of Serbian Academy ...
... Linguistics at the Institute for Bulgarian Lan- guage with the Bulgarian Academy of Sciences, 203–210. Branislava B. Šandrih, Ranka M. Stanković, Mirjana S. Gočanin WHOSE EXAMPLE IS IT? FEATURE ANALYSIS OF EXAMPLES FROM DICTIONARY OF SERBIAN ACADEMY OF SCIENCE AND ARTS Summary The question we ask ...Бранислава Б. Шандрих, Ранка М. Станковић, Мирјана С. Гочанин. "Чији је пример? Анализа лексичких обележја на примерима Речника САНУ" in Српски језик и његови ресурси, Међународни славистички центар, Филолошки факултет, Универзитет у Београду (2019). https://doi.org/10.18485/msc.2019.48.3.ch13
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics
Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić. "Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics" in Minerals, MDPI AG (2024). https://doi.org/10.3390/min14050511
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Advanced petrographic study of chipped stone artefacts from Lepenski Vir (Serbia): Evidence for accross-Danube communication in the Mesolithic?
Mineralogija, petrologija, arheologija, geoarheologija, vulkanski kompleks, prelazak Dnava, holocen, EvropaKristina Šarić, Josip A. Šarić, Vladica Cvetković. "Advanced petrographic study of chipped stone artefacts from Lepenski Vir (Serbia): Evidence for accross-Danube communication in the Mesolithic? " in Quaternary Science Reviews, Elsevier (2021). https://doi.org/doi: https://doi.org/10.1016/j.quascirev.2020.106741
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Old or New, We Repair, Adjust and Alter (Texts)
Cvetana Krstev, Ranka Stanković (2020)U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja... N612+Ek rijeka,N612+Ijk ‘river’ zeka,N741+Zool ‘rabbit’ sneg,N291+Ek snijeg,N291+Ijk ‘snow’ prijem,N1 ‘reception’ mesec,N9+Ek mjesec,N9+Ijk ‘moon/month’ sujeta,N600 ‘vanity’ Table 6. Pronunciation markers in SMD Dictionaries for variant transformation, as in the case of the dictionary for diacritic ...
... 61)\_reći(145) (candidates are forms for reka ‘river’, reč ‘word’, redak ‘line’ and reći ‘to say’); – veće(155)\_veče(34)\_vece(1) (candidates are forms of veće ‘coun- cil’, veći ‘bigger’, veče ‘evening’ and vece ‘WC’). In order to reduce the number of multiple candidates, procedure uses some ...
... can be a reflection of jat (reka ⇐⇒ rijeka ‘river’) or not (zeka ‘bunny’); a syllables ije/je in an Ijekavian text word can be a reflection of jat (snijeg ⇐⇒ sneg ‘snow’ and mjesec ⇐⇒ mesec ‘month/moon’) or not (sujeta ‘vanity’ and prijem ‘reception’). For the problem of switching between two pronunciations ...Cvetana Krstev, Ranka Stanković. "Old or New, We Repair, Adjust and Alter (Texts)" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.3
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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 ...... IRE, 2019), and also in the Decree on Criteria and Procedure for Qualification for Privileged Electricity Producer Status in Serbia (new, 2013): • Hydropower plants — This includes both run-of-the-river and reservoir hydropower plants, over a wide range of ca- pacities. The most common type of hydroelectric ...
... characteristics of river flow, biomass supply chain, etc.), as well as specific information about the technical characteristics of proposed facilities (efficiency, flexibility, mode of operation, etc.). This requires further work in collecting and analyzing data from the relevant locations. The presented approach ...
... hydroelectric power plant uses a dam on a river to store water in a reservoir. Some hydroelectric power plants just use a small canal to direct the river water through a turbine. • PV power plants — This includes roof-mounted solar radia- tion power plants using solar energy which are constructed on top ...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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Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове
Јелка Крушић (2023)Тецишта су комплексне појаве нестабилности које захтјевају истраживања и испитивањакоја до сада нису рађена код нас у области геотехнике. По механизму, начину активирањаи понашању покренутог материјала се знатно разликују од клизишта. Циљ оведисертације је била примјена нумеричких модела пропагације тецишта на примјеру двијепојаве које су се десиле у Србији као посљедица дјеловања циклона Тамара. Детаљноистраживање тецишта подразумијева теренско картирање, теренска истраживања илабораторијска испитивања одабраних узорака са терена. Од теренских истраживања напримјеру тецишта Селанац урађена су геофизичка истраживања Електричнетомографије док ...тециште, нумерички модели пропагације, циклон Тамара, геофизичка истраживања, лабораторијска испитивања, Селанац, Лева река, RAMMS, SPH geoflow, реолошки моделЈелка Крушић. Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове, Београд : Универзитет у Београду, Рударско - геолошки факултет, 2023
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... Geology, Kamenička 6, 11 000 Belgrade, Serbia; (nevenka.djeric@rgf.bg.ac.rs) doi: 10.4154/gc.2020.11 Abstract The type section of the Ljubiš Formation, (Djokov Potok, Zlatibor area, western Serbia) is charac- terized by abundant poorly-to-moderately preserved radiolarians. The lower part of the type ...
... previous data from the upper part of the Ljubiš Formation, the age of the formation can be estimated to be in the interval from the ?Bajocian to Bathonian-Oxfordian. The new biostratigraphic data clearly show the onset of tectonic motion in the Middle Jurassic, documented by the presence of mass trans- ...
... Djokov Potok creek to the west and uphill. The coordinates of the starting point of the section are N 43˚ 37’ 14.0” E 19˚ 50’ 56.1”. We studied and sampled the lower part of this section up to the point N 43˚ 37’ 16.0” E 19˚ 50’ 54.5”. The underlying formation is not visible at the surface. A geological ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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A hundred years of Milutin Milanković's climate change theory - geological implications
Dejan Radivojević (2020)Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт... of Belgrade, Faculty of Mining and Geology, Department of Regional Geology, Kamenička 6, 11000 Belgrade, Serbia. E-mail: dejan.radivojevic@rgf.bg.ac.rs Abstract. Milanković’s cycles theory published hundred years ago is the most important theory in climate science and had great influence on Earth disci- ...
... fects the amount of greenhouse gases in the atmos- phere. The main consequences of the interactions of the atmosphere and the geosphere are best observed in the relatively recent events while during the geolog- ical “deep” time these relations become blurry. As an example, from the end of the Paleocene ...
... 2006). As an example, the recent research on the Trias- sic Chinle Formation in Petrified Forest National Park in Arizona confirms the existence of a foreseen 405.000-year Milanković’s cycle influenced by the movement of the planets jupiter and venus. The core samples from the Chinle Formation were dated ...Dejan Radivojević. "A hundred years of Milutin Milanković's climate change theory - geological implications" in Geološki anali Balkanskoga Poluostrva, Univerzitet u Beogradu, Rudarsko geološki fakultet (2020). https://doi.org/10.2298/GABP201125011R
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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 ...... SUMMARY From the 70s and the development from the seismic stratigraphy - sequence stratigraphy has become powerful tool in modern scientific research. Science has encouraged the development of the method and biggest advances can be seen in resolution improvement and application of the original s ...
... other types of sediments. The transition from low-resolution data (seismic profiles) to high-resolution (outcrops, cores, geological sections) has enabled geologists outside the industry to implement the method without hindrance. Probably the most suitable sediments for the application of high-resolution ...
... stratigraphy are carbonates. In the last twenty years, several papers dealing with this issue have been published. The Jurassic-Cretaceous period stands out as a particularly interesting time in geological history, when a large part of the planet was covered by the sea. The method of high-resolution ...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)
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The Reciprocal Algebraic Integers Having Small House
Dragan Stankov (2021)Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The Reciprocal Algebraic Integers Having Small House" in Experimental Mathematics (2021). https://doi.org/ 10.1080/10586458.2021.1982425
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Analiza seizmičkog dejstva eksplozije pri miniranju na primeru izrade tunela Golubac kod Golupca
Savremeno rudarstvo, a pogotovo masovna eksploatacija metaličnih ležišta, ne bi se mogla zamisliti bez primene eksploziva. Rudarstvo je privredna grana, gde su eksplozivi našli najširu primenu za eksploataciju čvrstih mineralnih sirovina. Primena energije eksploziva dovodi do poboljšanja tehničkoekonomskih pokazatelja pri eksploataciji mineralnih sirovina, ali i do pojave negativnih efekata koji prate radove na miniranju. Eksplozivni materijali u rudarstvu, geologiji i drugim delatnostima, svojim dejstvom narušavaju prirodnu sredinu u vidu drobljenja, razbacivanja komada stene, vazdušnih udara, pojave sezmičkih efekata, pojave ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analiza seizmičkog dejstva eksplozije pri miniranju na primeru izrade tunela Golubac kod Golupca" in XV Međunarodna konferencija OMC 2022, Zlatibor, 12-15. oktobar 2022., Jugoslovenski komitet za površinsku eksploataciju (2022)
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The number of nonunimodular roots of a reciprocal polynomial
Dragan Stankov (2023)We introduce a sequence Pd of monic reciprocal polynomials with integer coefficients having the central coefficients fixed as well as the peripheral coefficients. We prove that the ratio of the number of nonunimodular roots of Pd to its degree d has a limit L when d tends to infinity. We show that if the coefficients of a polynomial can be arbitrarily large in modulus then L can be arbitrarily close to 0. It seems reasonable to believe that if ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of nonunimodular roots of a reciprocal polynomial" in Comptes rendus mathematique, Elsevier France Editions Scientifiques et Medicales (2023). https://doi.org/10.5802/crmath.422