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Упит dcterms_subject_txt:Timok Magmatic Complex

534 items

  • 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 polynomials

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... methylated forms [13]. It is especially important to determine the source and mobility of arsenic in groundwa- ter. Its mobility depends on the highly-complex geochemi- cal processes that take place in the aquifer. An anoxic state of groundwater increases arsenic mobility [14]. Based on a review of different ...
    ... some cases. Below this depth, the physicochemical proper- ties of the groundwater are extremely unfavorable and would necessitate costly and complex technological treat- ments. Iron, ammonium ion, organic substances, and arsenic are the major parameters that do not meet require- ments, MPC [23, ...
    ... of the groundwaters used for drinking water sup- ply in the South Pannonian Basin exhibited an unsatisfac- tory water quality, which is a result of complex geological and hydrogeochemical characteristics. In view of the size of the test area, it was divided into three districts: Banat, Bačka, and Srem ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... multidisciplinary research and con- ceived as illustrative proposals for potential developments on the site, range from modest drinking fountains to complex resorts with variety of facilities (Figure 2). Since 20 out of 50 proposals refer to wellness and spa facilities, they have remained in the spotlight ...
    ... design strategies, which were applied to 20 sites with wellness and spa facilities that ranged in size from small mobile units for balneotherapy to complex multifunctional developments. The main design strategies, developed mainly based on bioclimatic architecture, [32] included • modularity, • sizing ...
    ... Pannonian basin, one can clearly observe two massive lithological complexes: (1) The basin’s Palaeozoic–Mesozoic bedrock and (2) the Neogene–Quaternary complex and the related two main types of geothermal reservoirs: fractured and karstified basement reservoirs, and sand/sandy-clay basin-fill reservoirs. The ...

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Mineragenetske karakteristike i potencijalnostjuvelirskih mineralnih resursa leckog vulkanskog kompleksa

    Zoran Ž. Miladinović (2012-12-11)
    Jedan od najznačajnijih regiona u Srbiji, sa stanovišta potencijalnosti juvelirskih mneralnih resursa, predstavlja lecki vulkanski kompleks, tercijarne starosti i dominantno andezitskog sastava. Ovaj vulkanski kompleks površine preko 700km2 nalazi se u južnojSrbiji na prostoru imeđu Kuršumlije, Lebana i Medveđe.Prvi su pažnju na juvelirske mineralne sirovine ovog prostora obratili graditeljiJustinijane Prima-e (VI vek). Najintenzivnija istraživanja izvršena su u periodu 1980–1982. ali samo na malom prostoru krajnjeg jugoistočnog dela vulkanskog kompleksa.U Leckom vulkanskom kompleksu dominiraju andezitske stene i njihovi piroklastiti.Smatra se ...
    vulkanski kompleks, mineragenetske karakteristike, juvelirski mineralni resursi, nalazišta, potencijalnost, kvarc, ametist, ahat, kalcedon, jaspis, prognoza
    ... MINERAL RESOURCES OF LECE VOLCANIC COMPLEX (SOUTH SERBIA) Summary One of the most significant regions in Serbia, relative to gemstone mineral resources, is the Lece volcanic complex, Tertiary age and dominantly andesitic composition. This volcanic complex, located in southern Serbia and covers ...
    ... part of the Lece volcanic complex. It is considered that the volcanic activity begins in the Upper Oligocene and continues through most of the Miocene. The present andesitic rocks are devided into two large groups: amphibolitic and piroxenitic andesites. This volcanic complex is located on the border ...
    ... zone. Two regional fault structures of major imortance in the formation of this volcanic complex are: the Tupale and the Merdare disslocations. There are 14 gemstone occurrences in The Lece volcanic complex and 8 of them were discovered during the realisation of this doctoral thesis. Those occurrences ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... Figure 2. The 2013 point cloud, with sub-selected area of interest and predefined cross-section plane. techniques. Their complex research had multiple objectives, targeted primarily towards measuring current and estimating future small/large scale rockfalls trends. Their principal ...
    ... the Adriatic Balkan Region. 11-13 October, Slovenia, Ljubljana, pp 83-88 [11] Brodu N and Lague D 2012 3D Terrestrial LiDAR data classification of complex natural scenes using a multi-scale dimensionality criterion: applications in geomorphology. ISPRS jour. of Photogr. and Rem. Sens. 68 121-134 ...

  • Combining Heterogeneous Lexical Resources

    Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić (2004)
    development of lexical resources, morphological dictionaries, WordNet
    ... adjective is possessive (+Pos), in ekavian pronunciation (+Ek). The information assigned to a lemma in DELAS can be used by Intex to formulate complex queries. For instance, the query would retrieve all the possessive adjectives from a text that do not belong to the Ekavian pronunciation ...
    ... by the relation ENG_DERIVATIVE. This, however, is not the case in general. The semantic marks in the DELAS entries enable the formulation of complex queries in the Intex environment. The use of the Intex regular expression (noun marked as a musical instrument in any form) enables ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе
    ... rock deep creep) ������ ������� (���. debris flow) ������ ��� (���. earth flow) ������ ��� (���. soil creep) ������› �� ›������ (���. complex movement ) ����������� ��� ��� ���� ���������� ›������ ��������� ��� ��� ������� ������� � ����›� �� ›������� ������� � ����������›��, ������ ›�� ...
    ... rock ( debris ( - eayth spreading spread spread spread / > / ( debris flov earth fflow ( flowing ( rock flow; |} rock deep creep ( soil creep) > > complex movem¢ ent 69������ �� ›������� � ������ � 21. ��›� ��������� � ������ ›���, ���  ����, ���� � �� ������, �������� � ��������� ����� �� ������� ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević (2017)
    ... Rakovica stream valley (KNEŽEVIĆ, 1989). °e resulting stratigraphic data are interpreted in the context of Neoalpine geodynamics and revealed a complex tectonic structure with pronounced block structures. In the studied area, during the Neoalpine tectonics the signiºcant diµerential movement (upl ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... Simić, V.; Ranogajec, J.; Bačkalić, Z.; Popov, K.; Životić D. Mineral-raw material complex of the brick and ceramic industry: Current situation, current problems, research, trends. In Mineral and Raw Material Complex of Serbia and Montenegro; Vujić, S., Ed.; Belgrade, Serbia, 2003; pp. 390–403. (In ...
    ... without bentonite processing plants and related industry that would use the final products. All these facts impose the necessity of a detailed and complex study of bentonite deposits, and above all a critical analysis and evaluation of both the current exploration methodol- ogy and the achieved results ...
    ... should not be prescribed (or mandatory), nor the minimum number of re- quired tests. We have proven that much more attention should be focused on the complex study of industrial clays on the one hand (origin of certain industrial types of clays, their quality, and possibilities of application) and improvement ...

  • Poređenje rezultata interferometrijske analize za zemljotrese na istočnom anatolijskom rasedu od 2020. i 2023. godine

    Dragan Živković (2024)
    Ovaj rad se bavi analizom površinskih deformacija izazvanih zemljotresima u Turskoj iz 2020. i 2023. godine korišćenjem diferencijalne satelitske radarske interferometrije (DInSAR tehnike). Cilj istraživanja bio je da se kvantifikuju i uporede deformacije terena izazvane ovim seizmičkim događajima i da se razumeju mehanizmi koji stoje iza oslobađanja seizmičke energije u regionu. Analizom DInSAR snimaka, identifikovane su različite deformacije duž rasednih zona za svaki zemljotres. Dok je zemljotres iz 2020. godine (M 6,7) izazvao lokalizovane deformacije duž Istočno anatolijskog raseda, zemljotres ...
    DInSAR, Istočno anatolijski rased, Kahramanmaraški trostruki spoj

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... faults, Geology, 17(10), 893–896. Morishita, Y., Kobayashi, T., Fujiwara, S. & Yarai, H., 2017. Complex Crustal deformation of the 2016 Kaikoura, New Zealand, earthquake re- vealed by ALOS-2 complex crustal Deformation of the 2016 Kaikoura, New Zealand, earthquake revealed by ALOS-2, Bull. seism ...
    ... Res., 183(3–4), 170–182. Le Corvec, N., Walter, T.R., Ruch, J., Bonforte, A. & Puglisi, G., 2014. Experimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruption, J. geophys. Res., 119(7), 5356–5368. Leever, K.A., Gabrielsen ...
    ... a common method to determine strain in analogue models. However, the qualitative interpretation of observed strain has remained problematic for complex settings. Hence, PIV-derived displacements have not been fully exploited before, as methods to qualitatively characterize cumulative, large strain ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool ...
    ... the default. — Number of azimuth directions - Valid values must be muhltiples of 8 (8, 16, 24, 32, and so on). The recommended number for complex topography, such as in the case of the topography of the city of Vranje, is 32. 334 12% International Conference on Energy and Climate Change ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • The ‘Umka’ landslide

    Uroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević (2024)
    We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...
    rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoring

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... replace script based on the previously generated CSV file (Figure 6). finite state machines and transducers to solve this problem, which is more complex to implement but performs faster in processing this type. Transformation of documents into concept vectors (surrogate cre- ation) After the documents ...
    ... simple algorithm and evaluated against a team of experts. Preliminary results demonstrated the suitability of the proposed ap- proach within a very complex task. Future work will focus on the decrease of false positive results in order to boost the overall performance of the system. The classification ...

  • 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 ...
    ... integral part of strategic planning, is very important from the point of view of achieving maximum economic 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 ...

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... cp-175-00124. Eppelbaum, L.V. 2015. Quantitative Interpretation of Magnetic Anomalies from Thick Bed, Horizontal Plate and Intermediate Models Under Complex. Archaeological Prospection 22, 4: 255- 268. Gaffney, G. 2008. Detecting trends in the prediction of the buried past: A review of geophysical ...
    ... sites: Inversion filters based on the verticalsited finite prism model. Archaeometry 33: 215-230. Tsokas, G. N., Hansen, R. O., 2000. On the use of complex attributes and the inferred source parameter estima- tes in the exploration of archaeological sites, Archaeological Prospection 7, 1: 17-30. Whitehead ...