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Упит dcterms_subject_txt:catchment area

519 items

  • 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

  • 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
    ... concentration, modelling, control, intelligent system, soft computing, fuzzy logic, artificial neural networks Scientific area: MINING ENGINEERING Narrow scientific area: COMPUTING AND SYSTEM ENGINEERING UDC: 004.81-1:005.1/.3/.5/.7:311 519.237/.245 621.31:622:681.3 658.5:659.2(043 ...
    ... 658.5:659.2(043.3) MODEL OF INTELLIGENT ADAPTIVE CONTROL SYSTEM FOR ORE TREATMENT PROCESS Abstract In the ore processing area, froth flotation is one of the most significant and most frequently used methods for separating useful minerals from gangue. Therefore, it is important ...
    ... grade and recovery, while maximizing profits. Consequently, research into the modelling and control of this process have always been an important area in control engineering practice. Theoretical research within the dissertation included an analysis of the position and role of different approaches ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... documents and a set of 10 information needs, represented by respective queries. For ex- ample, the first informational need “gold in Bor and the surrounding area” is converted into formal Boolean query (zlato OR Au) AND (Bor OR Borski okrug) ‘(gold OR Au) AND (Bor OR Bor district)’. For evaluation standard measures ...

  • Петрологија црвених пешчара источне Србијe

    Андреј Марковић (2024)
    У источној Србији формација црвених пешчара има велико распрострањење и улази у састав многих планина овог дела наше земље. Формацију чине кластичне стене интензивно црвене боје псамитске, ређе псамитско-псефитске структуре и алевритске структуре. Ове стене леже трансгресивно преко старијих пермо-карбонских и карбонских стена, док навише прелазе у доњотријаске седименте. Формација црвених пешчара захвата два појаса унутар Карпато-балканида – унутрашњи и средишњи део. Узорци анализирани у овом раду део су средишњег појаса. Тема завршног рада је петрологија црвених пешчара источне ...
    источна Србија, црвени пешчар, петролошко-минералошке карактеристике, аркозе
    ... are part of the centre belt. Subject of the final paper is petrology of the red sandstones of Eastern Serbia, more specifically samples from the area around Grza River near Paraćin. After macroscopic determination, optical and chemical analysis were applied. According to structural and petrol ...

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... e (CFT). At this temperature, the internal morphology of the product begins to change, resulting in significant changes in the specific surface area of the cake structure or loss of structure. It has been found that this parameter is usually about 2-5 "C higher than the corresponding Tg'. However ...
    ... 3200 3100 3000 Wavenumber (cm") Fig. 6. FT-IR spectra of freeze-dried samples with sucrose as lyoprotectant: from 4000 to 660 cm ! (a) and selected area from 3600 to 3000 cm ! (b). J.R. Mitrović et al. Trehalose Mannitol Tr an sm it ta nc e (% ) T – TT T T TT T —T—T T_— —T 4000 3500 3000 ...

  • A bilingual digital library for academic and entrepreneurial knowledge management

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić (2015)
    A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...
    Knowledge management, Digital library, Multilingualism, Language Resources, Terminology
    ... in digital library services. Knowledge assets and their relation to performance improvement of an enterprise thus became an important research area in the management of company business (Linzalone, 2008). Jain and Mutula stated that library and information professionals have been referred to ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... , 2011), divided in several subdomains: petrology, mineralogy, hydrogeolo- gy, geophysics, structural geology etc. RudOnto is covering the larger area of mining engineering and mine safety terminology (Stankovic et al., 2012). The third termbase used is the Dictionary of Library and Information ...

  • 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
    ... platform sediments can be found in the orogenic belts of the Carpatho-Balkanids and Dinarides. Sequence stratigraphy research of these sediments in our area would enable regional and local correlations and could serve for paleogeographic reconstructions. ЛИТЕРАТУРА – REFERENCES AISNER-WILLIAMS ...

  • 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
    ... entry data and the research level of the topic area, which is a significant problem of the Trebišnjica river catchment, especially when it is referred to the water quality and identification of processes which affect it. In the river Trebišnjica catchment there isn't any database in digital format ...
    ... vii In such circumstances, it is evident that in the river Trebišnjica catchment, the optimal conditions for analyses, probabilities, optimalisation of the resources and in general bringing managing decisions in the area of water quality, have not been made. The main factors which determine water ...
    ... potential use of water for irrigation in the Trebišnjica river catchment, belongs to class S1.This class includes water with low content of sodium which is suitable for almost all types of soil. The surface water of the researched area are mainly suitable for irrigation regarding to danger of Magnesium ...

  • Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)

    Gordana M. Jovanović (2014-12-05)
    Rad obuhvata detaljnu studiju badenskih školjaka koje potiču sa terenajugoistočnog oboda Panonskog basena (Centralni Paratetis). Proučavani su lokaliteti naprostorima Srbije (Fruška gora, Golubac, okolina Beograda, Aranđelovca, Koceljeva,Loznica) i severoistočne Bosne (Ugljevik). Pored taksonomske analize i paleontološkihopisa bivalvija, u radu je dat i spisak revidovanih vrsta koje su do sada pronađene usedimentima badenskog kata istraživanog terena. Do sada je ukupno poznato 41familija, 108 rodova i 174 taksona. Identifikovano je 170 bivalvijskih vrsta, međukojima su neke prvi put konstatovane na ovim ...
    školjke, baden, Panonski basen (Centralni Paratetis), stratigrafija,paleoekologija, paleogeografija, paleobiogeografija
    ... a paleogeographic sketch of the studied area in the Badenian period. Key words: bivalves, Badenian, Pannonian Basin (Central Paratethys), stratigraphy, paleoecology, paleogeography, paleobiogeography. Scientific area: geosciences Scientific sub-area: palaeontology UDC number: 55:551.7/.782 ...
    ... Skulptura na površini ljušture se sastoji od širokih, pljosnatih, radijalnih rebara, kojih ima oko 31. Naraštajne linije veoma izražene. Brava prava, area u obliku izduženog nejednakostraničnog trougla, smeštena ispod vrha. Mišićni otisci jasni, četvorougaonog oblika, zadnji malo veći od prednjeg. ...
    ... od širokih, pljosnatih, radijalnih rebara, kojih ima oko 34. Naraštajne linije veoma izražene, naročito u međurebarnim prostorima. Brava prava, area u obliku izduženog nejednakostraničnog trougla smeštena ispod vrha. Mišićni otisci jasni, četvorougaonog oblika. Kod mladih individua dužina je ...

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... campus. This will help them prepare for actual mobility, which is the basic aim of the Bologna Process. By creating a European higher education area based on international cooperation and academic exchange, universities will also attract students and staff from other parts of the world. In this ...

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • Dosadašnja saznanja o bijelim boksitima na prostoru Crne Gore

    Mia Jovanović, Slobodan Radusinović, Vladimir Simić (2023)
    bijeli boksit, geološka istraživanja, geologija, geohemija

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... and 7100 terms, it contains a compre- hensive vocabulary of both scientific and professional terms used by scientists, experts and students in the area of exploration and production of oil and gas, but also petroleum geology, geophysics, development deposits, drilling and equipping wells, ecology and ...
    ... computer scientists, terminologists, language professionals, and other stakeholders in industry and society, in order to investigate and extend the area of linguistic data science. An example of RDF export is presented in Figure 4 followed by the Turtle RDF Syntax [52] to illustrate the use of the model ...

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... when the signal exceeds the threshold, and ends when the signal falls below it. �e di�erence between these two moments is taken as duration T, and the area between the imposed threshold and the portion of the signal above it as the size of subavalanche, ∫= + −S dt V t t V[ ( ) ] T s0 th , see Fig. 1a ...
    ... the signal exceeds the threshold, and ends when the signal falls below it. The difference between these two moments is taken as duration T, and the area between the imposed threshold and the portion of the signal above it as the size of subavalanche, § = f 7 dt[V(t, + t) — Vj} see Fig. 1a, where f is ...

  • Управљање отпадом – услови, циљеви и изазови на домаћем тржишту

    Дарко Драгићевић (2024)
    Тема овог завршног рада обухвата анализу система управљања отпадом на домаћем тржишту, са посебним освртом на постојеће изазове и могућности за унапређење. Управљање отпадом је кључна компонента заштите животне средине и одрживог развоја, док у Србији ова област пролази кроз процес трансформације у складу са захтевима Европске уније и међународним стандардима. Овај завршни рад је пружио боље разумевање сложености управљања отпадом у Србији и понудио практична решења која могу помоћи у остваривању одрживог развоја у овој области.
    Заштита животне средине, управљање отпадом, комунални отпад, рециклажа
    ... opportunities for improvement. Waste management is a key component of environmental protection and sustainable development, while in Serbia this area is undergoing a transformation process in accordance with the requirements of the European Union and international standards. This final paper ...
    ... understanding of the complexity of waste management in Serbia and offered practical solutions that can help achieve sustainable development in this area. Keywords: Environmental protection, waste management, waste management, recycling. CAJP)KAJ 1. YBOR.... 2. CMCTEM yTIPAB/JbAM5A OTITAJIOM ...

  • Tektonska evolucija ugljevičkog basena (Bosna i Hercegovina)

    Slobodan Dragić (2024)
    U radu je prezentovana šira slika tektonske evolucije ugljevičkog basena, kao i Dinarida uopšte. Prikazani su litostratigrafski odnosi istraživanog područja, kao i kratak pregled tektonskih jedinica koje se nalaze u domenu basena. Najveća pažnja posvećena je kinematskoj analizi rasjednih struktura i interpretaciji podataka u svjetlu tektonske evolucije basena. Ugljevički basen zapunjen je oligocensko-miocenskim sedimentima, a njegovu osnovu grade paleozojsko-mezozojske formacije. Najstarije tvorevine na ovom području su permski sedimenti. Trijaski i kredni deponati, uglavnom krečnjaci, reprezent su tvorevina ...
    oligocensko-miocenski basen, dvosmjerna ekstenzija, supsidencija, kompresija, inverzija
    ... slab gaps and surface motion. Inmfermational Journal of Earth Sciences 104 (1): p. 1-26. Karamata, S., 1975. Geologic Evolution of Yugoslavian Area from Triassic to Quaternary. Rađovi Instituta za geološko-rudarska istraživanja i ispitivanje nuklearnih i drugih mineralnih sirovina. Beograd. ...
    ... Matenco, L., Radivojević, D. 2012. On the formation and evolution of the Pannonian Basin: Constraints derived from the structure of the junction area between the Carpathians and Dinarides. Tectfonics 31, p. 1-31. Milošević, A., Cvijić, R., Ivanković, B., Jokanović, P., 2017. Elaborat o klasifikaciji ...