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Упит dcterms_subject_txt:dewatering system

703 items

  • Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer

    Saša Milanović (2019)
    Geochemistry and Petrology

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    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 ...
    Morphology, Lexicon, lexical database, Standards for LRs
    ... Serbian: a Revision using Feature System Declaration Cvetana Krstev, Ranka Stanković, Vitas Duško Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A Description of Morphological Features of Serbian: a Revision using Feature System Declaration | Cvetana Krstev, ...
    ... publications. - The Repository is available at: www.dr.rgf.bg.ac.rs A Description of Morphological Features of Serbian: a Revision using Feature System Declaration Cvetana Krstev 1 , Ranka Stanković2 , Duško Vitas 3 1 professor, Faculty of Philology, Belgrade, 2 assistant professor, Faculty of ...
    ... most notably ELAG for morphological disambiguation (Laporte & Monceaux, 1999) and Multiflex for compound inflection (Savary, 2008). When our own system for automatic detection of compound inflectional properties (Krstev & Vitas, 2009) asked for yet another description of morphological features, we ...

  • Metals in Sediment and Phragmites Australis (Common Reed) from Tisza River, Serbia

    Štrbac Snežana, Šajnović Aleksandra, Grubin Kašanin Milica, Vasić Nebojša, Dojčinović Biljana, Simonović Predrag, Jovančićević Branimir (2014)

  • Geochemical and Sedimentation History of Neogene Lacustrine Sediments from the Valjevo-Mionica Basin (Serbia)

    Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Jovančićević Branimir (2012)

  • Tectono-sedimentary evolution of the NE Dinarides margin during the Cretaceous Adria-Europe convergence

    Uroš Stojadinović, Nemanja Krstekanić (2023)
    конвергенција Адрије и Европе, Сава субдукциони систем, кредна синтектонска седиментација

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Stochastic Prediction of Temporal Variations of Karst Groundwater Regime in Function of Sustainable Management: Case Study Mokra Karst Spring (SE Serbia)

    Veljko Marinović, Branislav Petrović (2021)
    karst groundwater, stochastic model, water quality, early warning system

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... compression and transportation through pipeline system and injection in different geological formations [2,3]. Capturing CO2 is the most expensive phase in the carbon capture and storage process and it accounts for approximately 75 % of overall costs in the CCS system [4]. There are a large number of CCS ...
    ... refineries but it has limited use in power plants. For power generation, pre-combustion system can be combined with an integrated gasification combined cycle power plant (IGCC) [8]. Compared to post-combustion system, the gasification process is operated at the high pressure and synthesis gas contains ...
    ... the presence of SO2 can cause corrosion problems [4]. Today, there is no commercial oxy-fuel combustion projects in operation worldwide [5]. This system has only been tested on pilot scale. There are few projects in construction and in early development. An illustration of oxy-fuel combustion process ...

  • Keyword-Based Search on Bilingual Digital Libraries

    Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović (2017)
    This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... the methodology and design of our system, in Section 3 its architecture is outlined, while in Section 4 we present the evaluation procedure and its results on a domain corpus. Finally, in Section 5 we give some concluding remarks and present plans for system improvement. 2. Methodology and ...
    ... phase of disambiguation. For example, the MWT geološki informacioni sistem (AXAXN) ‘geological information system’ would be given precedence over informacioni sistem (AXN) ‘information system’. However, in this case, both would be accepted as MWT. Extraction graphs perform simple word lemmatization ...
    ... and the fact that the term ‘noise level’ is characteristic for mining. 3. System Architecture The automatic procedure for MWT extraction and lemmatization is implemented using Unitex, a corpus processing system (http://www-igm.univ-mlv.fr/~unitex), and LeXimir, a multipurpose software tool ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... provide a framework for identifying, measuring and managing vulnerabili- ties of an energy system, energy security can be defined as a low level of vulnerability of the vital components of the energy system, i. e. energy sources, infrastructure, technological development [2]. Vulnerabilities represent ...
    ... formulate and develop models that should es- tablish correlations between the various factors of energy security, and finally, link them into a logical system. Multi-dimensional nature of energy security is the starting point of various scientific studies dealing with energy issues [1]. In many of these ...
    ... Dimension of Energy Security in the Republic of Serbia THERMAL SCIENCE: Year 2017, Vol. 21, No. 1A, pp. 323-333 325 and origin of threats to some energy system, as well as the long-term perspective of sustainable development and environmental protection. Many studies developed multi-dimensional approach ...

  • Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije

    Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović (2024)
    Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...
    obrazovanje, rudarstvo, geologija
    ... education system is a clear prerequisite for the development of the individual, society, and the country. The education system in the Republic of Serbia was set long ago, and reforms have not been fully implemented. This is particularly evident in higher education, where the Bologna system reform has ...
    ... has not been fully carried out or has been negatively misused. Currently, the education system is under significant pressure due to the sharp demands of the labor market. This paper analyzes the education system in the field of mining and geology in the Republic of Serbia. Given that mining and mineral ...
    ... 9-12 October 2024 ANALIZA OBRAZOVNOG SISTEMA I KADROVSKOG POTENCIJALA REPUBLIKE SRBIJE U OBLASTI RUDARSTVA I GEOLOGIJE ANALYSIS OF THE EDUCATION SYSTEM AND PERSONNEL POTENTIAL IN THE FIELD OF MINING AND GEOLOGY IN THE REPUBLIC OF SERBIA Ignjatović D.!, Đenadić S-?, Jovančić P.*, Miletić F.“, Mitrović ...

  • Development of terminological resources for expert knowledge: a case study in mining

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić (2015)

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen

    Nemanja Krstekanić, Liviu Matenco, Ernst Willingshofer, Marinko Toljić, Uroš Stojadinović (2021)

  • Simulacija isticanja odabranih karstnih vrela pirotske kotline

    Saša Milanović, Branislav Petrović, Vesna Ristić Vakanjac, Ljiljana Vasić, Veljko Marinović, Petar Vojnović (2022)
    Analiza recesije, autokorelaciona i kroskorelaciona analiza vremenskih serija padavina i isticanja podzemnih voda karstnih vrela Krupac i Gradište (Stara planina, JI Srbija) izvršena je radi formiranja stohastičkog autoregresivno-krosregresivnog modela (ARCR) i kratkoročne prognoze dnevnih vrednosti izdašnosti. Usled postojanja heterogenosti i anizotropnosti karstne izdani veoma je komplikovano i zahtevno odrediti prostornu distribuciju podzemnih voda u okviru karstnog hidrogeološkog sistema, te je primenljivost determinističkih modela minimizirana. Stoga je upotreba stohastičkog modela u ovom slučaju svrsishodnija. Autokorelogram izdašnosti vrela Krupac pokazao je ...
    karstno vrelo, recesija, autokorelacija, kroskorelacija, ARCR MA model, JI Srbija

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... is most commonly achieved through deep well pumping using rod pumps. Figure 2.1 illustrates a deep well pumping system that includes both surface and subsurface equipment. This system consists of the driving unit (horsehead), a string of sucker rods, and the downhole pump. Walking Beam Equalizer ...
    ... monitored by recording surface dynamograms, while in the case of a system for recording time functions of stroke and load, downhole dynamograms are generated using a mathematical model. Theoretical dynamograms of the deep well pumping system serve as a starting point for comparative analysis and help ...
    ... to visually interpret and identify potential issues in the deep well pumping system operation. 3.2.3 Downhole dynamogram The surface dynamogram results from the influence of all variables in the portion of the system above the depth of the deep well pump installation, and therefore it is not alvays ...

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... especially where terminology is concerned, a language support system is developed within the BAEKTEL metadata portal. In this paper we will describe the linguistic component of the system, the resources and tools used as an educational system as a whole and to improve the visibility of resources in the ...
    ... the localization and translation industry as well as public translation and terminology units and organizations. Image 1: BAEKTEL language support system [5] 3. BAEKTEL To enable productive multilingual cooperation, open educational resources (OER) produced within BAEKTEL project will be available ...
    ... information retrieval, OER indexing, etc.), ∑ annotation of selected resources, ∑ OER repository on local edX platform. The BAEKTEL language support system consists of several software components administrating in the same time language resources: grammars, lexical and textual resources (Image 1). ...