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Упит dcterms_subject_txt:Water Science and Technology

2403 items

  • Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija

    Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić (2015)
    Biougalj se dobija pirolizom iz organskog otpada. Smatra se ,,modifikatorom'' zemljišta i koristi se kao đubrivo i kao rezervoar za skladištenje ugljenika. Kvantifikacija funkcionalih grupa je važna zbog hemijske reaktivnosti biougljeva koji imaju uticaj na svojstva zemljišta. U istraživanju su korišćena 3 uzorka biouglja različitog porekla i jedan referentni, aktivni ugalj. Sadržaj kiselih funkcionalnih grupa je određivan titracijom po Boehm-u na dva načina: uvođenje N2 tokom titracije i tretman sa BaCl2. Optimizovan je način pripreme tri Boehm ova rastvora ...
    ... *Faculty of Mining and Geology, University of Belgrade, Djusina 7, Belgrade; **Institute of general and physical chemistry, Studentski trg 12-16, Belgrade; ***Faculty of Physical chemistry, University of Belgrade, Studentski trg 12-16, Belgrade ‘“***Institute of Chemistry, Technology and Metallurgy, Njegoseva ...
    ... is sensitive in the presence of CO; and dissolved organic compounds and the time of sparging by N2. In order to check the efficiency this methods, spectrofotometry is used at a wavelenght of 250 nm. ‘This work was funded by the Ministry of Education, Science and Technological Development od the Republic ...
    ... modifier due to its fertilizing effect and its potential for carbon storage. Quantification of functional groups is interesting because chemical reactivity of biochar can have effect on soil properties. In this researh different samples of biochar are used and one as referent sample. Oxygen surface ...

  • Wordnet Development Using a Multifunctional Tool

    Ivan Obradović, Ranka Stanković (2007)
    In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...
    Wordnet development, language resource integration, HLT tools
    ... textes: Le systeme INTEX, Paris: Masson, 1993. [13] D. Tufiş, (ed.). Special Issue on BalkaNet Project, Romanian Journal on Information Science and Technology, Bucureşti, Publishing house of the Romanian academy, Vol. 7, No.1-2, 2004. [14] P. Vossen, (ed.). EuroWordNet: A Multilingual Database ...
    ... Academic Publishers, 1998. [15] P. Vossen, Introduction to the Special Issue on the BalkaNet Project. Romanian Journal of Information Science and Technology, Vol. 7, No.1-2, pp. 5-6, 2004. ...
    ... George Miller, a renowned professor of psychology at Princeton University and his associates from the Cognitive Science Laboratory. They started to develop PWN as a linguistic database that maps the way the mind stores and uses language, namely as some sort of a mental lexicon to be used in the ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... step and logical direction for further work and improvement. Acknowledgements This paper was realized as a part of the project "Improvement of Lignite Opencast Technology in Order to Increase Energy Efficiency and Occupational Safety" (TR 33039) financed by the Ministry of Education and Science ...
    ... Mining and Geology research team in the development of a business intelligence system for accident analysis in mines. Mining engineering, as all other engineering disciplines, generates large amounts of heterogeneous data and needs interoperability among various related information technology applications ...
    ... which supports multidimensional views on business data, using the 13th ISCSM 2016 BELGRADE 4 technology of multidimensional or relational databases. This technology is often used by managers and analysts who require higher levels of aggregated views on business data. Mining companies in the ...

  • 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
    ... technology for infrastructure facilities and terrain stability monitoring“, financed by Ministry of Education, Science and Technological Development of the Republic of Serbia, and the collaboration between University of Belgrade, Faculty of Mining and Geology and Faculty of Civil Engineering, Institute ...
    ... stic landslide points and UAV photogrammetry, has an important role in designing of the technology for landslide activity monitoring and results interpretation. The usage of the single permanent GNSS station provides information on landslide activity at any time moment and defines the spacing between ...
    ... Ding and Y. Feng, “A demonstrative GPS-aided automatic landslide monitoring system in Sichuan Province”, Positioning, vol. 1(09), 2005. [5] B. Abolmasov, S. Milenković, B. Jelisavac and V. Vujanić, “Landslide Umka: The First Automated Monitoring Project in Serbia”, in Landslide Science and Practice ...

  • Split-Desktop software for the analysis of fragment size distribution of blasted rock mass

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)
    Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...
    Split-Desktop softver, drobljenje stena, miniranje, analiza, digitalna obrada fotografija

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Softverski alati za korišćenje resursa za srpski jezik

    Ivan Obradović, Ranka Stanković (2008)
    ... Resources and Evaluation (LREC’2006). Ge- noa, Italy, pp. 2142-2147. Tufiş, D. (ed.). (2004) Special Issue on BalkaNet Proj- ect, Romanian Journal on Information Science and Technology, Bucureşti, Publishing house of the Roma- nian academy. Vitas, D., Krstev, C. (2005) “Structural derivation and meaning ...
    ... manipulation of lexi- cal resources (for the time being only the update and search of SWN is envisaged), and also offer information of the Human Language Technology Group and the developed software for lexical re- sources, namely WS4LR and WS4QE. Figure 10. The main menu of the WS4QE web application The ...
    ... Language Technology Group, such as various types of electronic dictionaries and aligned texts, can be further refined and used for different purposes, by means of tools specially developed for these tasks. The tools we describe are WS4LR, a software tool that has already been developed and used for ...

  • 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
    ... (information and library sciences, electro-energetics, etc.);  Experiments with different strategies and measures for distinguishing general-language MWUs from domain-specific MWTs. 6. Acknowledgements This research was supported by the Serbian Ministry of Education and Science under the grant ...
    ... 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 ...
    ... problem of MWT extraction and lemmatization from Serbian texts we have chosen a rule-based approach, which relies on a system of language resources such as morphological e-dictionaries and grammars developed within the University of Belgrade Human Language Technology Group (Vitas et al., 2012) ...

  • Karst groundwater quantity assessment and sustainability: the approach appropriate for river basin management plans

    Veljko Marinović, Zoran Stevanović (2019)
    As a result of the fact that karstified rocks can accumulate large amounts of high-quality groundwater, karst aquifer is considered, throughout the world, one of the most important types of aquifers. Due to their high permeability, but also vulnerability to pollution, these precious groundwater resources need to be properly evaluated and protected. Taking into account heterogeneity and complexity of the karst environment, it is difficult to propose a uniform algorithm for managing karst groundwater, which causes the necessity to ...
    Upravljanje karstnim podzemnim vodama, Pritisci na kvantitet voda, Plan upravljanja vodnim resursima, Bosna i Hercegovina, Srbija

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... english/natural_origin/1.html#sec4 19. PROVINCIAL SECRETARIAT OF SCIENCE AND TECHNOLOGY DEVELOPMENT (PSSTD). Water Supply and Water Protection Strategy for the Autonomous Province of Vojvodina. University of Novi Sad, Faculty of Science and Mathematics, 2009 [In Serbian]. http://www.eko.vojvodina.gov. ...
    ... finding an alternative water supply for most exposed populations. This paper gives a prognostic hydrochemical map showing arsenic concentrations (Fig. 6) and assessment of the risks incurred through drinking water. According to the Provincial Secretariat of Science and Technology Development, more than ...
    ... As water resulted in HQ and R of 5.72 and 2.6 per 1,000 persons, and this should indicate the importance of developing a regional water sup- ply system. Acknowledgements This research was supported by the Ministry of Education and Science, Governement of Republic of Serbia, through a Project III 43004 ...

  • WS4LR - a Worksation for Lexical Resources

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović (2006)
    Lexical Resources, Wordnet, Serbian
    ... Editor VisDic, Romanian Journal of Information Science and Technology, Volume 7, Numbers 1-2, 2004, pp. 201-214 Savary, A. (2005) Towards a Formalism for the Computational Morphology of Multi-Word Units, in Proceedings of 2nd Language & Technology Conference, April 21-23, 2005, Poznan, Poland ...
    ... the Human Language Technology Group at the Faculty of Mathematics, University of Belgrade. The tool is aimed at manipulating heterogeneous lexical resources, and the need for such a tool came from the large volume of resources the Group has developed in the course of many years and within different projects ...
    ... ies. The tool operates on the .NET platform and runs on a personal computer under Windows 2000/XP/2003 operating system with at least 256MB of internal memory. 1 Introduction The Human Language Technology group at the Faculty of Mathematics has been developing various lexical resources over ...

  • 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

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... l concentrations. Water Science and Technology 43, 109–116. 26. Gregoraszczuk, E., Ptak, A., Karpeta, A., Fiedor E., Wróbel A., Milewicz T., Falandysz J., .2012. Hexachlorobenzene and pentachlorobenzene accumulation, metabolism and effect on steroid secretion and on CYP11A1 and CYP19 expression in ...
    ... Environmental Science & Technology 46, 1035−1043. 7. Abel, S., Nybom, I., Mäenpää, K., Hale, E.S., Cornelissen, G., and Akkanen, J. 2017. Mixing and capping techniques for activated carbon based sediment remediation - efficiency and adverse Effects for Lumbriculus variegatus, Water Research 114,104-112 ...
    ... Maletić, S., Rončević, S., Grgić, M., Krčmar, D., Varga, N., Dalmacija, B., 2018. The role of organic matter and clay content in sediments for bioavailability of pyrene. Water Science and Technology 77, 439–447. 31. Spasojević, J.M., Maletić, S.P., Rončević, S.D., Radnović, D. V., Čučak, D.I., Tričković ...

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... s of karst in terms of surface and underground water circulation, as well as stability and hazard assessment for large objects such as dams (Sretković and Vučković, 2020). 'The use of geophysical characterization of karst systems can provide an economical and non-invasive alternative _ for ...
    ... terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis and visualization that differs from the standard logging data processing. Numerical interpolation and correlation of data from various logging measurements (short-normal and long-normal ...
    ... such a typical karst environment. Therefore, they are the essence of the problem of water loss from the reservoir, and their detection and determination of their character in terms of predisposition to water circulation is a key task of geophysical surveys. METHODS OF INVESTIGATION Analyzed ...

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... project "Research on possibility for AT (Advanced Technology) rockbolting application in mines for the purpose of increasing work safety and production efficiency" (TR33025). Development of this project is financed by Ministry of Science and Technological Development, Republic of Serbia. ...
    ... roof and floor conditions, rock pressure and geo-mechanic conditions (criteria C2); • Mining hazards, such as gas, water, dust and potential for gas outbursts and spontaneous combustion (criteria C3); • Potential for mechanization, such as seam inclination, seam thickness, floor and roof ...
    ... reply to the paper ‘remarks on the analytic hierarchy process’. Management Science 36, 259–268. [6] Akıncı H., Ozalp Y., Turgut B., 2013: Agricultural land use suitability analysis using GIS and AHP technique. Computers and Electronics in Agriculture, pp 71-82 [7] Saaty, T.L., 1980. The Analytic ...

  • Creation of a Training Dataset for Question-Answering Models in Serbian

    Ranka Stanković, Jovana Rađenović, Maja Ristić, Dragan Stankov (2024)
    Razvoj i primena veštačke inteligencije u jezičkim tehnologijama značajno su napredovali poslednjih godina, posebno u domenu zadatka odgovaranja na pitanja (Question Answering - QA). Dok su postojeći resursi za QA zadatke razvijeni za glavne svetske jezike, srpski jezik je relativno zanemaren u ovoj oblasti. Ovaj rad predstavlja inicijativu za kreiranje obimnog i raznovrsnog skupa podataka za obučavanje modela za odgovaranje na pitanja na srpskom jeziku, koji će doprineti unapređenju jezičkih tehnologija za srpski jezik. Pored brojnih istraživanja o jezičkim modelima ...
    veštačka inteligencija, obrada prirodnog jezika, jezički resursi, anotirani skupovi, ekstrakcija informacija, odgovaranje na pitanja

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

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

  • 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 ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation