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567 items

  • Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7

    Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković (2019)
    Part of E-80 highway that passes through Serbia (from the city of Nis to the administrative border Merdare) is 77 km long. The highway is divided into two sections: the first from Nis to Plocnik (39.4 km long) and the second from Plocnik to the administrative border with Kosovo. The route is designed through a typical plain and hilly terrain in which different geological units are dominant: crystalline schists, neogene sediments of foothills and quaternary sediments in the valley ...
    ... unsecured slopes over 2 m in height. Heterogeneity in terms of lithological composition, weathering degree of rocks as well as variable physical- mechanical properties, does not have significant impact on conditions of construction. Category B includes terrains that can be conditionally stable in ...
    ... have heterogeneity in terms of lithological composition, weathering degree and primary alternation of rock mass as well as variable physical-mechanical properties. In these terrains, temporary reduction of safety factor can be caused by short-term and temporarily events. Category C includes ...
    ... great importance on construction conditions has the heterogeneity in terms of lithological composition, weathering degree and variable physical-mechanical properties. 3.2.1. Section: Nis – Prokuplje (km: 0.0-17.2) Section of the highway Nis (south) – Prokuplje (east) from km: 0.0-17.2, is divided ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... of fresh rock, since their equivalents in the near- by tunnel, constructed in 2016-2019, were much more weathered and looser, with much poorer mechanical properties. The strata follow an incomplete flysch succession (which spreads over vast areas) of thicker coarse to conglomeratic sandstone, ...
    ... the subject of a detailed, compiled paper about this site. Further details are available in the above-listed contributions. 3. Materials and methods Data acquisition and processing were conducted for relatively long period, including first couple of years of pilot work, and a systematic procedure ...

  • Permanent GNSS monitoring of landslide Umka

    Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)
    Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...
    клизиште, перманентно праћење, ГНСС
    ... Position of passive GNSS network points and 62 characteristic points of Umka landslide. In order to monitor the Umka landslide using geodetic methods, 62 points were established on the landslide body (Figure 3). Landslide points are stabilized using steel benchmarks in asphalt, wooden stakes ...

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... J., Keellings, D. (2016) “Fatal landslides in Europe”. Landslides. 13(6): 1545–1554 Marjanović, M. (2014) “Conventional and machine learning methods for landslide assessment in GIS”. Palacký University, Departmnet of Geoinformatics. Olomouc. SCG-XIII INTERNATIONAL SYMPOSIUM ON LANDSLIDES. ...

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... conodont studies – we found latest Carnian to early Norian radiolarians from the locality in the Lim River near Bistrica (BRAGIN et al., 2017). Methods Samples of cherts and cherty limestones were processed in diluted (10%) hydrofluoric acid (HF) following the method by PESSAGNO & NEWPoORT, 1972 ...

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... lanovac — in Serbian|.- Savezni geološki zavod, Beograd. GAJIĆ, V., MATOVIĆ V., VASIĆ, N. & SREĆKOVIĆ-BATOĆANIN, D.(2011): Petrophysical and mechanical properties ofthe Struganik limestone (Vardar zone, Western Serbia).– Ann. Geol. Penins. Balk., 72, 87—100. GERZINA, N. & CSONTOS, L. (2003): ...
    ... sedimentation followed through the Cretaceous until the Campanian when flysch se- dimentation began (FILIPOVIĆ et al., 1978). 3. MATERIALS AND METHODS The described radiolarian assemblages originate from a sec- tion in Brežđe village (Fig. 3). Four samples, three of which produced positive results ...

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... of Serbia, this test method is not yet standardized (so the ASTME 2835 standard is used) and can be applied only in correlation with standardized methods. According to the provisions of the mentioned Instruction and the Regulations of testing, determination of the dynamic modulus of deformation, Evd ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... Julich, Germany Šinstitut of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia “Innovation Center Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia SFaculty of Chemistry, University of Belgrade, Belgrade, Serbia ŠFaculty of Physical ...
    ... Geology, Serbia IBG-3 Agrosph8are, Julich, Germany and Metallurgy, University of Belgrade, Belgrade, Serbia “Innovation Center Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia ŠFaculty of Chemistry, University of Belgrade, Belgrade, Serbia sFac:ulty of Physical ...
    ... polyglucoside Glucopon 600 CS UP as a co- surfactant or a hydrophilic alcohol ethoxylate (C+gE+Ho) as an efficiency booster [28]. MATERIALS AND METHODS Toluene (purity 99% by GC) was purchased from Merck Schuchardt (Germany). Octaethylene gly- col decylether (C+)jEa, octaethyleneoxide decylether) ...

  • Метода променљивих околина за решавање проблема p-центра са поузданом мрежом

    Јована Рађеновић, Стефан Мишковић, Оливера Станчић (2023)
    У овом раду је разматран проблем p-центра са поузданом мрежом (енгл. Reliable p-center facility location problem - RpCFLP). Решавање проблема подразумева иницијално успостављање p ресурса и алокације корисника, као и накнадну реалокацију корисника у складу са новонасталим сценаријима који садрже информације о онеспособљеним ресурсима и осталим измењеним улазним подацима. За решавање посматраног проблема предложена је метахеуристика заснована на итеративној варијанти основне методе променљивих околина (енгл. Iterated basic variable neighborhood search - IBVNS). Резултати тестирања предложене метахеуристике указују на њену ...
    Проблем p-центра, Робусна оптимизација, Метода променљивих околина

  • 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)
    Earth-Surface Processes

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... Wright, S. E. (2008). ISOcat: Corralling Data Cate- gories in the Wild. In LREC. Khemakhem, M., Foppiano, L., and Romary, L. (2017). Automatic Extraction of TEI Structures in Digitized Lex- ical Resources using Conditional Random Fields. In Iz- tok Kosem, et al., editors, Electronic lexicography ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... Strategic versus Tactical Approaches in Mining , Australian Centre for Geomechanics, Perth, sec. 14, str. 1-19, Humphrey J, & Wagner J, 2011, Mechanical extraction, loading, and hauling, SME Mining Engineering Handbook, treće izdanje str. 903-929. Hustrulid W, Kuchta M, 1998, Open Pit Mine Planning and ...
    ... Annealing. In Modern Heuristic Techniques for Combinatorial Problems (ed. Reeves, C.R.), McGraw-Hill 234 Elevli, B., 1995, Open pit mine design and extraction sequencing by use of OR and AI concept, International Journal of Surface Mining Reclamation and Environment., Vol.9, str. 149 – 153. Erarslan ...
    ... Pit Limit Problem, XVII-ti APCOM, Colorado School of Mines, Golden, Colorado, str. 263-273 Benndorf, J. Dimitrakopoulos, R., 2007. New efficient methods for conditional simulation of large orebodies. Orebody Modelling and Strategic Mine Planning, The Australasian Institute of Mining. 231 Braticevic ...

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... Strategic versus Tactical Approaches in Mining , Australian Centre for Geomechanics, Perth, sec. 14, str. 1-19, Humphrey J, & Wagner J, 2011, Mechanical extraction, loading, and hauling, SME Mining Engineering Handbook, treće izdanje str. 903-929. Hustrulid W, Kuchta M, 1998, Open Pit Mine Planning and ...
    ... Annealing. In Modern Heuristic Techniques for Combinatorial Problems (ed. Reeves, C.R.), McGraw-Hill 234 Elevli, B., 1995, Open pit mine design and extraction sequencing by use of OR and AI concept, International Journal of Surface Mining Reclamation and Environment., Vol.9, str. 149 – 153. Erarslan ...
    ... Pit Limit Problem, XVII-ti APCOM, Colorado School of Mines, Golden, Colorado, str. 263-273 Benndorf, J. Dimitrakopoulos, R., 2007. New efficient methods for conditional simulation of large orebodies. Orebody Modelling and Strategic Mine Planning, The Australasian Institute of Mining. 231 Braticevic ...

  • Хидрогеохемијске карактеристике и квалитет вода слива Требишњице, Република Српска, Босна и Херцеговина

    Dragoslav R. Banjak (2016-08-25)
    Упркос неповољном временском и просторном распореду, воде су најзначајнијиприродни ресурс Источне Херцеговине. Ова чињеница довела је до реализацијепројекта „Вишенамјенског хидросистема Требишњица“, којим је, премаМилановићу (2006), до сада обухваћено: седам хидроелектрана, шестакумулација, шест брана, шест тунела укупне дужине 59,7 km, неколикоприступних тунела, 62,5 km бетонског канала кроз Попово поље, канал крозДабарско (6750 m) и Фатничко поље (2770 m) и систем тунел-канал или цјевоводпрема Дубравама.У почетку са доминантним енергетским предзнаком, концепција јетрансформисана у интегрално рјешење вишенамјенског коришћења и заштитевода и животне ...
    хидрогеохемијски процеси, мултиваријантна статистичкаанализа, инверзно геохемијско моделовање, квалитет воде, употребиљивост водеза наводњавање, слив Требишњице
    ... Компоненте 1 2 3 4 1 1,000 0,047 0,227 0,028 2 0,047 1,000 0,013 0,146 3 0,227 0,013 1,000 0,040 4 0,028 0,146 0,040 1,000 Метод издвајања (extraction method): анализа главних компоненти Метод ротације: облимин са Кајзеровом нормализацијом Драгослав Р. Бањак ...
    ... 9896 Одбацити 6. 0,591 0,8986 Одбацити Табела 57. Компоненте корелационе матрице Компоненте 1 2 1 1,000 0,196 2 0,196 1,000 Метод издвајања (extraction method): анализа главних компоненти Метод ротације: облимин са Кајзеровом нормализацијом Драгослав Р. Бањак ...
    ... of this database has the consequence of humble number of pieces of work in the field of hydrogeochemistry and water quality, and that's why the methods of descriptive statistics are the most frequently used for data analyses. Драгослав Р. Бањак ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... of the Križna Nappe contain some car- bonate admixture and the radiolarians are usually calcified and not well preserved. Consequcently, the extraction of radiolarians was often unsuccessful or the microfossils ob- tained had limited stratigraphic value, because of the poor state of preservation ...
    ... magnetostratigraphy (Grabowski and Pszczolkowski, 2006), permitted the establishment of a pre- cise stratigraphic scheme (Grabowski ef a/l., 2013). METHODS The sections (Table 1; Figs 3-8) were analysed at high resolution, including microfacies analysis, carbonate con- tent, biostratigraphy, and ...
    ... phic studies (locations in Figs 3—8). The radiolarian-bearing samples were etched with hydrochloric and hydrofluoric acid, utilizing standard methods (Pessagno and Newport, 1972). The observations under the SEM for the precise identification and illustration of the radiolarians were performed ...

  • FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain

    Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović (2021)
    U radu se daje kratak prikaz teorije semantike okvira, na kojoj je zasnovana leksička baza Frejmnet. Predstavljena je koncepcija ove mreže, kao i mogućnosti njene primene. Predstavljena je i leksička analiza koja se primenjuje u projektu izrade Frejmneta i ukazano na razlike između analize zasnovane na okviru u odnosu na analizu zasnovanu na reči. Zatim je prikazano nekoliko povezanih okvira koje prizivaju reči iz domena rizika. U radu je predstavljena i platforma NLTК pomoću koje se mogu koristiti ...
    Srpski jezik, semantika okvira, FrameNet, scenario rizika, rudarski korpus, obrada prirodnog jezika
    ... shown that FrameNet offers a detailed and structured mapping, which can then be used in different ways for language processing, especially in text extraction and organizing, as well as in an effort to make human- computer interaction more natural in applications like chatbots. A chatbot needs to be able ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • 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
    ... The methodology of the research was carried out with contemporary field and laboratory methods (ICP - MS HR) during the process of collecting and analyzing data, while non- parametric statistical methods and hydrochemical modeling were applied in data processing. The uneven distribution of sampling ...
    ... statistics for multiply censored water quality data. Water Resources Research 24 (12): 1997-2004. 58. Helsel DR, Hirsch RM. 2002. Statistical Methods in Water Resources. Techniques of Water-Resources Investigations of the United States Geological Survey. Hydrologic Analysis and Interpretation ...
    ... environmental data. John Wiley & Sons. Inc, Hoboken. 60. Helsel D. (Rob), Lee L. 2006. Analysis of Environmental Data with Nondetects: Statistical Methods for Censored Environmental Data. Washington. Continuing Education Workshop at the Joint Statistical Meetings American Statistical Association Seattle ...

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX
    ... and by Serbian Ministry of Education and Science under the grant #III 47003. References Gravano, L. Nezinger, M.H. (2006). Systems and Methods for Using Anchor Text as Parallel Corpora for Cross-Language Information Retrieval - US Patent 7,146,358 B1 - Google Patents. Kovačević, Lj. ...