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Упит dcterms_subject_txt:Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology

2435 items

  • The impact of the Covid-19 pandemic on the economy, water resources and sustainable development

    Milan Tucaković, Dragoljub Bajić, Dušan Polomčić (2022)
    ванредна ситуација, загађење подземних вода, водни сектор

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... work safety and production efficiency” (TR 33025), financed by the Ministry of Education and Science of the Republic of Serbia within the framework of Programme of research in the field of technological development for the period 2011-2019. REFERENCES 1. Optimizing organization, resources and costs of ...
    ... nt of Lignite Open cast Technology in Order to Increase Energy Efficiency and Occupational Safety” (TR 33039), “Developed new methods for diagnosis and examination mechanical structures” (TR 35040) and a part of the project “Research on possibility for AT (Advanced Technology) rockbolting application ...
    ... selection, including savings and improvements, can be achieved by these activities: In-time replacement of auxiliary machines and vehicles; Usage of proven and quality machines with implemented unification as much as possible; Improvement of maintenance system; Implement modern and improved technologies ...

  • Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete

    Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)
    sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija
    ... report any data. Acknowledgments: This work was supported by the Ministry of Education, Science and Techno- logical Development of the Republic of Serbia through the realization of research themes 1702103 and 1702105. Conflicts of Interest: The authors declare no conflict of interest. References 1 ...
    ... 0/2 mm) was used. Specific gravity and water absorption of the used sand were 2610 kg/m3 and 1.52%, respectively. For making concrete, a crushed gabbro was used as the coarse aggregates (fractions 4/8 mm and 8/16 mm) which had a specific gravity of 2890 kg/m3 and a water absorption of 0.58%. River sand ...
    ... in agricultural land and water for irrigation and methods for testing”, applicable in Serbia which meant that the obtained mortar met all the required health and environmental criteria. This paper is a continuation of that research. After the characterization of waste slag and finding ways for its potential ...

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... project no. OI176019 of the Ministry of Education, Science and Tech- nological Development of the Republic of Serbia. The authors thank the LA-ICP-MS laboratory, Geological Institute in Sofia, as well as the SEM laboratory, Faculty of Mining and Geology, University of Belgrade for support. The authors ...
    ... Cretaceous subduction and Cenozoic post-colli- sional orogenic development (see Schmid et al. 2008; Cvetković et al. 2016; Prelević et al. 2017). The Sava Zone (suture zone) separates the Carpatho–Balkan orogen (a part of the Dacia Mega-unit and Tisza), from the southerly and wes- terly Adria derived ...
    ... mudstones, sandstones and limestones which sometimes look like imma- ture turbidites (Dimitrijević & Dimitrijević 1987, 2009; Sladić-Trifunović et al. 1989). Going upwards in the strati- graphic scheme, Lower Cretaceous sediments are replaced with shallow water reef limestones and clastics. The Upper ...

  • The final closure of the Vardar Ocean: paleomagnetic, AMS and structural results

    Emö Márton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2020)
    ... the flanking areas and the general NE-SW orientation of thecompressional stress field outside of the zone. Acknowledgement. This work was financially supported by the National Development andInnovation Office of Hungary, project K 128625 and by the Ministry of Education and Science of theRepublic of Serbia ...
    ... folded during the Upper Cretaceous and Paleogene and the paleomagneticsignals, which exhibit smeared distribution close to the present N, are of post-folding age. TheAMS foliation and bedding planes are sub-parallel, thus the deformation must have been weak.Fold axes and AMS lineations are roughly N-S oriented ...
    ... recently published and new paleomagnetic, AMS results in combination withstructural observations will be presented from Upper Cretaceous sediments and Oligocene–Lower Miocene igneous rocks representing the areas bordering the Sava zone from the westernand eastern sides, respectively and from the upper ...

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Joint interpretation of paleomagnetic, structural and AMS results from the Vardar Zone of Serbia

    Emo Marton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2021)

  • 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 ...
    ... on An application dubbed WS4LR (Krstev et al., 2006), subse- quently upgraded and renamed LeXimir (Stanković, Ranka and Krstev, Cvetana, 2016), was designed and implemented for the purpose of further development and management of morphological electronic dictionaries of Serbian (SMD), presented ...
    ... sented by its DELAS entry form, and :categories are the possible grammatical categories of the word form, each category represented by a single character code (Krstev and Vitas, 2007). LeXimir, a tool for development and maintenance of e- dictionaries enabled development of Serbian morphologi- cal ...
    ... lexical database. After years of development, Serbian Morphological Dictionaries (SMD), developed as a system of textual files, have become a large and complex lexical resource. As a consequence, LeXimir, the application that has been used for SMD development and management, was no more suitable. ...

  • A Tel Platform Blending Academic And Entrepreneurial Knowledge

    Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović (2013)
    ... Tools - software to support the development, use, reuse and delivery of learning content, including content and learning management systems, as well as content development tools; • Learning content - learning resources, both academic and entrepreneurial, and reference resources, where language ...
    ... acronym BAEKTEL stands for "Blending Academic and Entrepreneurial Knowledge within Technology Enhanced Learning". The term "technology-enhanced learning" or TEL pertains to activities aimed at improving the quality and outcomes of learning where technology plays a significant supportive role, thus ...
    ... lectures at their own pace and to better prepare themselves for class or work activities. In brief, BAEKTEL enables OER learners from both universities and industry courses to fill in the gaps in their knowledge and become familiar with new knowledge and technology. 3. OVERVIEW OF BAEKTEL ...

  • Потреба за израдом биланса и оценом расположивих резерви подземних вода Републике Србије

    Зоран Стевановић, Вељко Мариновић, Бранислав Петровић (2021)
    Природне карактеристике Србије, просторна дистрибуција ресурса водe и њихових корисника, као и међусобна интеракција коришћења, заштите вода, као и заштите од вода, условиле су да се подземне воде на читавој територији морају посматрати интегрално, јединствено, комплексно и рационално. Међутим, тренутно је у Републици Србији могуће дефинисати само одлике појединих издани и/или изворишта услед непостојања довољних података за свеобухватну анализу стања ресурса. За оцену притиска на квантитет ресурса подземних вода, што је обавеза према Оквирној директиви о водама ЕУ (ОДВ) ...
    подземни водни ресурси, биланс, расположиве резерве, одрживо управљање, Република Србија

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • The rational technology model selection of the underground drivage development for the given conditions

    Tokalić Rade, Vidanović Nebojša, Savić Ljubinko (2013)

  • Automatic construction of a morphological dictionary of multi-word units

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić (2010)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion
    ... Implementation and Usefulness Our procedure for automatic production of DELAC entries is a module of the LeXimir tool [6], which is written in C# and operates on the .NET platform. It supports development, maintenance and exploitation of various resources: e- dictionaries, wordnets, and aligned texts ...
    ... Ranka Stanković2, Ivan Obradović2, Duško Vitas3, and Miloš Utvić1 1 Faculty of Philology, University of Belgrade 2 Faculty of Mining and Geology, University of Belgrade 3 Faculty of Mathematics, University of Belgrade Abstract. The development of a comprehensive morphological dictio- nary of multi-word ...
    ... is 1.29. The calculation is performed on the basis of dictionaries described in [10] and [11] that are part of the standard distribution of Unitex [12], a corpus processing system based on the finite-state technology. 4 Authors Suppressed Due to Excessive Length Table 1. Initial content of the Serbian ...

  • High-resolution sequence stratigraphy of carbonates - theory and examples

    Jelena Stefanović, Dejan Radivojević (2020)
    Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...
    изданак, системска група, јура-креда, карбонатна платформа, плитководна средина
    ... SUMMARY From the 70s and the development from the seismic stratigraphy - sequence stratigraphy has become powerful tool in modern scientific research. Science has encouraged the development of the method and biggest advances can be seen in resolution improvement and application of the original ...
    ... Geology, v. 178, p. 5 - 30. KERANS, C. and TINKER, S.W. 1999, Extrinsic stratigraphic controls on development of the Capitan reef complex, in SALLER, A.H., HARRIS, P.M., KIRKLAND, B.L. and MAZZULLO, S.J. eds., Geologic framework of the Capitan Reef: SEPM (Society of Sedimentary Geology) Special P ...
    ... 2019. Evolution of the Urgonian shallow-water carbonate platform on the Helvetic shelf during the late Early Cretaceous. Sedimentary Geology. 387. 10. pp.18-56. BOVER-ARNAL, T., SALAS, R., MORENO-BEDMAR, J.A. & BITZER, K. 2009. Sequence stratigraphy and architecture of a late Early–Middle Aptian ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... Arabian Journal for Science and Engineering 38 (5), pp.1011–1023 205. Nakhaei, F., Mosavi, M.R., Sam, A., 2013b. Recovery and grade prediction of pilot plant flotation column concentrate by a hybrid neural genetic algorithm. International Journal of Mining Science and Technology 23, pp. 69–77 206 ...
    ... Estimation of diameter and surface area flux of bubbles based on operational gas dispersion parameters by using regression and ANFIS. International Journal of Mining Science and Technology 23 (3), pp. 343–348 255. Shammas, N.K., Bennett, G.F., 2010. Principles of Air Flotation Technology. In: Flotation ...
    ... al Conference on Environment Science and Engineering IPCBEE, Vol.8, (2011) IACSIT Press, Singapore, pp. 81-85 299. Xiaoping, Y., Aldrich, C., 2013. Optimizing control of coal flotation by neuro-immune algorithm. International Journal of Mining Science and Technology 23 pp. 407–413 300. Xu, J.-H ...

  • OntoLex Publication Made Easy: A Dataset of Verbal Aspectual Pairs for Bosnian, Croatian and Serbian

    Ranka Stanković, Maxim Ionov, Medina Bajtarević, Lorena Ninčević (2024)
    Ovaj rad predstavlja novi jezički resurs za pretraživanje i istraživanje verbalnih aspektnih parova u BCS (bosanskom, hrvatskom i srpskom), kreiran korišćenjem principa Lingvističkih Povezanih Otvorenih Podataka (LLOD). Pošto ne postoji resurs koji bi pomogao učenicima bosanskog, hrvatskog i srpskog kao stranih jezika da prepoznaju aspekt glagola ili njegove parove, kreirali smo novi resurs koji će korisnicima pružiti informacije o aspektu, kao i link ka aspektnim parovima glagola. Ovaj resurs takođe sadrži spoljne linkove ka monolingvalnim rečnicima, Wordnetu i BabelNetu. ...
    aspekt glagola, lingvistički otvoreni podaci, BCS

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... University of Belgrade Language Technology Group [10] to support com- putational linguists in developing, maintaining and exploiting e-dictionaries. LeXimir is written in C#, and operates on the .NET platform. It can run on any personal computer under Windows and supports simultaneous manipulation ...
    ... Search, News Search and Book Search) are used by this library, consisting of simple web objects aimed at performing “inline” search. ACKNOWLEDGMENT This research was supported by the Serbian Ministry of Education and Science under the grant #III 47003. REFERENCES [1] B. Courtois and M. Silberztein ...
    ... Proper Names with Morfeusz and Multiflex,” in Aspects of Natural Language Processing, ser. Lecture Notes in Computer Science, vol. 5070. Springer, 2009, pp. 111–141. [10] C. Krstev, R. Stanković, D. Vitas, and I. Obradović, “The Usage of Various Lexical Resources and Tools to Improve the Performance ...

  • Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)

    Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics