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445 items

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ana Mladenović, Jelena Ćalić (2021)
    Methods to determine seismic hazard in any region vary depending on the regional seismicity, but can be roughly grouped into two main groups: one based on probabilistic methods that use data about known seismicity in the region, and another, which is based on data related to the faulting processes and determination of seismically active faults. Both groups of methods are relatively good for seismically active regions. However, in regions of low seismic activity and slow deformations, there is neither ...

  • Influence of geological substrate on runoff formation, a case study: small river catchments in southeastern Serbia of similar size and with comparable pluviographic regimes

    Vesna Ristić Vakanjac, Veljko Marinović, Nikola Milovanović, Marina Čokorilo Ilić, Boris Vakanjac, Jugoslav Nikolić, Saša Bakrač (2022)
    We are witnessing climate change that is happening both, globally and, at the regionally - or local level. As a result of expected climate change in Southeast Europe, in the first place are the distributions of precipitation within the year (frequent extreme events are present) and then the increase in temperature, which already has a significant impact on evapotranspiration and runoff formed in a particular catchment area. In addition to climatic factors, the geological structure, i.e. the hydrogeological characteristics ...

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... data of similar category are: type 4 of injury, body part, weight of injury, workers age and qualifications, time dimension, organizational structure of mine, shifts and working day in which the violation occurred, the source and cause of the injuries, etc. Figure 1 depicts two OLAP cubes ...
    ... the right hand side features the project tree. The central table with numerical data is olap_povreda, whereas table dimensions are organizational structure (organizaciona struktura - OJ) and the RudOnto data dictionary (s_koncept) which can be related to the main table on basis of different fields ...
    ... presenting data. Figure 3 depicts three ways of presenting data on the number of injuries categorized by body parts. Due to the hierarchical structure of the RudOnto dictionary the analysis can be performed on several levels of detail. 5 Figure 2 The BI development environment ...

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... this way, an appropriate IT structure for keeping track of time ti is required. In real terms related to complex machine engineering systems, this condition is usually not fulfilled or only partially fulfilled. Another problem is that we cannot infer the availability structure by knowing the availability ...
    ... Usually, availability is shown as the coefficient of time use of the machine. This approach is not good enough because it does not go into the structure of the availability itself and requires a high level of IT support in system monitoring. In this sense, this paper will use the fuzzy theory and ...
    ... space. Usually, availability is shown as the coefficient of time use of the machine. This approach is not good enough because it does not go into the structure of the availability itself and requires a high level of IT support in system monitoring. In this sense, this paper will use the fuzzy theory and the ...

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    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 ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... Ivezić and M. Živković Energy Reports xxx (xxxx) xxx Fig. 1. The structure of electricity generation from RESs in Serbia (2014–2018) (SOR, 2016, 2017, 2018, 2019, 2020). Fig. 2. Shares of energy from RES (Ene, 2020). Fig. 3. The structure of renewable energy consumption by sectors (SOR, 2019). 2. Serbian ...
    ... The utilization of other RESs, such as solar, wind, and biomass is marginal. The structure of total capacities for electricity gener- ation and amounts of produced electricity in 2019 are shown in Table 1, while the structure of electricity generation from RESs in the 2014–2018 period is shown in Fig. 1 ...
    ... uncertainty inherent in decisions made by human beings (Rani et al., 2020). For decomposing the complex objective of the study into a hierarchical structure and for dealing with uncertainty in a decision-making process, FAHP appeared to be a useful tool. FAHP combines the fuzzy theory and the AHP method ...

  • Vebran Web Services for Corpus Query Expansion

    Ranka Stanković, Miloš Utvić (2020)
    U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.
    corpus search, web service, Serbian lexical resources, query expansion
    ... Serbian or represents a translation from another language. The SrpKor2013 is not structurally annotated, although some or all lev- els of the text structure (section, title, paragraph, sentence) are annotated in some particular corpus texts, especially those which are part of aligned corpora. The SrpKor2013 ...
    ... for Balkan languages was produced by translation of the basic synsets in the PWN 3.0, the hypernym/hyponym relations in SWN mirror its hierarchical structure. Other relations are implemented more freely, depend- ing on specific lexicalizations in Serbian. These relations include antonymy, meronymy, as well ...
    ... Stanković R. and Utvić M., “Vebran Web Service . . . ”, pp. 99–118 – each row represents either a particular corpus position (token) or an XML structure tag; – only the first column (called word) is mandatory and represents token values or XML tags; – if the table includes more columns then each ...

  • 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 ...
    ... more textual files, while dictionaries of forms are generated automatically, also as textual files. The structure of a simple word lemma is: lemma,POS#fst[+Marker]* Mandatory parts of this structure are a lemma, its POS, and identification of a finite-state transducer that will produce all lemma’s ...
    ... transition of development environment. The database contains all currently used markers, but these markers have not a “flat” structure anymore, but rather a hierarchical structure that can serve as a controller for do- mains of some fields in a database. As previously mentioned, DELAS dictionaries are ...
    ... (2013). LMF Lexical Markup Frame- work. John Wiley & Sons. Ide, N., Kilgarriff, A., and Romary, L. (2000). ITRI-00- 30 A Formal Model of Dictionary Structure and Con- tent. In Proceedings of EURALEX 2000, pages 113–126. Institut für Maschinelle Sprachverarbeitung, Universität Stuttgart, 2000. Kem ...

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... geology students 2 textbook is a natural continuation ofthe textbook English for geology students 1. Realizing that some teachers may prefer to structure their courses differently, we have made it such a way that each chapter is independent, so that they could be taught even in a differ- ent order ...
    ... who was a valuable collaborator on a large number of tasks, processing and conceptual solutions. Without her, this textbook would not have its structure. I had valuable help from my colleagues Marija Đorđević and Teodora Mihajlov, whom I am most thankful to. I thank prof. Dragan Milovanović and ...

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... representing a statement that includes linguistic variables based on available information about the considered engineering system [17]. A definition of structure and interdependence of linguistic variables is carried out in a coordinate system of membership function (µ), with regard to j-class as a synonym ...
    ... representing a statement that includes linguistic variables based on available information about the considered engineering system [17]. A definition of structure and interdependence of linguistic variables is carried out in a coordinate system of membership function (μ), with regard to j-class as a synonym ...
    ... can be displayed by three indicators (A, B, and C). These indicators are synthesized into one (M) (Figure 3). Figure 3. The input parameter structure. Parameter A1 represents the form and source of energy. Grades are given depending on which form of energy is used, how close the source of this ...

  • Srbija u OneGeology Europe

    Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić (2014)
    Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...
    OneGeologyEurope, метаподаци, хармонизација података, вишејезични мета-информациони систем
    ... at maps 1:25000, after 1:50 000 and 1:100 000 to map 1:200 000 (various authors from 1950 to 1968). Relevant criteria were used to define the structure that can describe any national geological units in a homogeneous way: lithology, age, genesis, tectonic structures. Faults were selected based on ...
    ... semantic coherence of our map, with other digital geological maps within 1G-E. Schematic harmonization ensures that all data sets have a coherent data structure, to enable web services to read and search the data in the right way. Syntax and data language, as well as systems for data management were ...
    ... er zone 7, ellipsoid: Bessel 1841, date: Hermann-Skogel units: meter in D_WGS_84 coordinate system. 6. Importing spatial objects in the data structure concordant with 1G-E. 7. Update of the feature attributes with 1G-Edictionaries entries. Table 1, shows an example of a generalization unit. At ...

  • Стратешко планирање функционалности подземних просторија моделом прогнозе деформација

    Лука Црногорац (2023)
    Релативно велике деформације подградне конструкције у подземним рудницима угља у Републици Србији представљају један од главних проблема за постизање планиране производње угља. Деформације подграде су директна последица статичких и динамичких оптерећења стенске масе и у многоме зависе и од времена трајања изложености подграде утицају подземног притиска. Код ниско механизованог радног процеса долази до повећаног излагања подземних просторија утицају подземног притиска услед дугог производног циклуса који је често пропраћен застојима у раду. Веома често подземне просторије се санирају и по ...
    подземне просторије, подграда, прогноза деформација, стратешко планирање

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ана Младеновић, Јелена Ћалић (2021)
    ... respect to the main thrust system. It is suspectedthat some of these fault systems are also active in recent times. Relatively complex geological structure and existence of a large number of rock discontinuities, aswell as relatively long time during which these geological units have been exposed on the ...

  • Developing Termbases for Expert Terminology under the TBX Standard

    https://dr.rgf.bg.ac.rs/s/repo/item-set/522 (2014)
    ... data-categories: 1. A core-structure module data-category is any data-category that is defined in the core-structure module DTD as a XML element. 2. A meta data-category is a general data-category used to group similar data- categories together. It is implemented as a core-structure module data-cate- ...
    ... right-hand side features a tree structure providing a hierarchical view of entries, with more detailed information on a selected term in Serbian to be found on the left-hand side. In this detailed view, the term itself is displayed as a subtitle, on top of a tree structure showing its place within the taxonomy ...
    ... two modules expressed in XML. One module is fixed and represents the common core structure of all TBX-defined TMLs. Another module, XCS (eXtensible Constraint Specification), consists of constraints on the core structure, specific for each TML. Both modules are for- mally defined with the corresponding ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... baektel.eu/ http://meta.baektel.eu 2. Publish Tagger outut is pushed to BMP and embeded in web page to make content more visible and structure for the courses. The use of these APIs is implemented with the GET request. Three most important types of interface are presented with examples ...
    ... is retrieved like in previous request  The request GET /api/course_structure/v0/course_structures/{course_id }/ returns data related to the structure of the selected course. As in the previous examples with format parameter set to json (GET /api/course_structure/V0/course_structures/{course_i ...
    ... location within the network is very important for dissemination and sustainability of BAEKTEL project. To that end a metadata vocabulary and data structure syntax based on DC and LOM were implemented within ResourceSpace, to offer a flexible and robust mechanism for indexing OER content and enabling ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... ac.rs (Figure 1). The user can search RudOnto using keywords or browse through available concepts either in Serbian or English using a tree-like structure [9]. 13th ISCSM 2016 BELGRADE 3 Figure 1. Ontology system - RudOnto The approach to mine safety knowledge codification in RudOnto is ...
    ... data of similar category, are: type of injury, body part, severity of injury, worker’s age and qualifications, time dimension, organizational structure of mine, shift and working day in which the injury occurred, the source and cause of the injury, etc. Figure 3 depicts two OLAP cubes. Each cell ...
    ... presenting data. Figure 4 depicts two ways of presenting data on the number of injuries categorized by body part and body side. Due to the hierarchical structure of the RudOnto dictionary the analysis can be performed on several levels of detail. Thus we can ask for injuries of the arm, head, leg, or hull ...

  • An Efficient Class of Iterative Root-Finding Methods with Applications

    Dejan Ćebić, Nebojša Ralević (2021)

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change