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Упит dcterms_subject_txt:Serbian literature

452 items

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... , (7) The structure of the matrix YVYT V is similar to the variance-covariance matrix in the classical multivariate statistical analysis literature. The matrix Y(i)Y(i)T , which is used in the univariate SSA, for the series X(i) Ni appears along the main diagonal, and the products of two Hankel ...
    ... y@yQT ... y@)y(Myr The structure of the matrix wy is similar to the variance-covariance matrix in the classical multivariate statistical analysis literature. The matrix Y YT, which is used in the univariate SSA, for the series X \ appears along the main diagonal, and the products of two Hankel matrices ...

  • 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
    ... ing (nanocrystal dispersion). The Tg' values of the samples with sucrose only presented in Table S1 agreed well with the values found in the literature (Meng-Lund et al.., 2019). The thermal event that could be characterized as the eutectic temperature was not detected in either sample containing ...
    ... and poloxamer 407) were not visible. FT-IR spectra of bulk sucrose, trehalose, and mannitol were in accordance to the findings in the related literature (Prizuela et al.. 2012; Wolkers et al., 2004; Bruni et al., 2009). The transmission spectrum of sucrose was characterized by very sharp and ...

  • Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content

    Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)
    Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...
    Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugs

  • Analiza mogućnosti primene tehnologije hvatanja i skladištenja ugljenika (CO2) na objektima Nis-A

    Isidora Veljanoski (2024)
    U ovom radu opisana je primena CCUS tehnologija u kompaniji NIS i na koji način treba da se optimizuje da bi projekat bio rentabilan.U prvom i drugom poglavlju opisani su energetski trendovi i tranzicije, razvojni mehanizmi za regulisanje emisije gasova staklene baste i o ugljen-dioksidu kao hemijskom jedinjenju i šta je to CCUS.U trećem, četvrtom i petom poglavlju je detaljnije opisano izdvajanje, hvatanje, transport i skladištenje ugljen-dioksida.Šesto poglavlje i sedmo poglavlje obuhvataju rešenja za razvoj i realizaciju CCUS projekata ...
    energetski trendovi, ugljen-dioksid, CCUS, izdvajanje, hvatanje, transport i skladištenje CO2, ležište, ekonomija projekta
    ... caaaaaannnnnn. 48 8.2 Rizici ı aktivnosti za nivelaciju rizika izdvajanja i skladištenja CO-.. 59 Zaključak .. aaaaaaaaaaaaaaeaakatoaoi 60 Literatura ...G aaaaoaaoaooaoaaotadttvtt 61 UVOD Globalno zagrevanje je postao problem koji utiče na celu planetu. Naučnici su dokazali da je povećanje ...
    ... razmatranju projekta, čiji Je razvoj tehnologije u ranoj fazi, neophodno je razmatrani su glavni rizici koji umanjuju mogućnost realizacije. 60 Literatura [1] B. Marr, URL: The Five Biggest New Energy Trends In 2022 (forbes.com) (5.6.2024) [2] D. Y. C. Leung, G. Caramanna, M. Mercedes Maroto-Valer ...

  • Modeliranje buke u zoni površinskog kopa Ljubija ležišta Ciganuša - Škorac

    Teodora Kaličanin (2024)
    Svaki neželjeni zvuk u prirodi se može definisati kao buka. Buka svakodnevno utiče na ljude i predstavlja pretnju po ljudsko zdravalje. Zbog toga su nastale mnoge metode za merenje, proračun i saniranje ovog problema.Tema ovog završnog rada master studija je modeliranje buke u zoni površinskog kopa ''Ljubija''. Opisani su pojam buke i zvuka kao osnov za kasnije iznesene podatke, kao i tipovi i različiti izvori buke. Prikazane su metode merenja buke i uređaji koji se u tom procesu koriste. Obrađen ...
    buka, modeliranje, uticaj na čoveka, površinski kop
    ... 44 8.6 Mere zaštita od buke.......aaaaaaa a aaaaaaeaaaaaaaaakatate 53 9. Zaključak.....aaaa a nanao a a aaaaaaaaaaaeaaaeaaaaeakakvt 57 10. Literatura..........aaaaaaa a oaaaaoaaoataaaaaoattttt 59 1. Uvod Buka, odnosno svaki ljudskom aktivnošću stvoren neželjeni ili štetni zvuk u spoljnoj ...
    ... se doprinosi dugoročnom očuvanju zdravlja i sigurnosti kako radnika, tako i stanovništva koje živi u neposrednoj blizini rudnika. 58 10.Literatura l. Knežević D., Torbica S., Rajković Z., Nedić M., „Odlaganje industrijskog otpada“, Rudarsko-geološki fakultet u Beogradu, Beograd 2015 2 ...

  • Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije

    Dragana D. Petrović (2015-12-29)
    Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...
    Istočna vardarska zona; ofioliti; 2D i pseudo 3D geofizičko-geološkimodel; geodinamička evolucija
    ... Neubauer, F., Höck, V., Quadt, A., 2013. An anorogenic pulse in a typical orogenic setting: The geochemical and geochronological record in the East Serbian latest Cretaceous to Palaeocene alkaline rocks, Lithos (Elsevier) 180, 181-199, doi: 10.1016/j.lithos.2013.08.013. 105 De Wet, A. P., ...
    ... 1130/B30446.1. Dimitrijević, M. D. and Dimitrijević, M.N., 1987. The Paraflysch of the Central Vardar Subzone. The Turbiditic Basins of Serbia (Serbian Academy of Science and Arts), 79-100. Dimitrijević, M. D., 1997. Geology of Yugoslavia, Belgrade: Barex, Special Publications. Dimitrijević ...
    ... Radoičić, R., 1978. Osnovna geološka karta i Tumač za Osnovnu geološku kartu SFRJ, List Paraćin (K 34-7), Beograd, Savezni geološki institut (in Serbian with English abstract). Eppelbaum, L., 2015. Quantitative Interpretation of Magnetic Anomalies from Thick Bed, Horizontal Plate and Intermediate ...

  • Izdvajanje vode iz prirodnog gasa

    Dejan Nedeljkov (2024)
    U radu je istaknuto važnost prirodnog gasa kao vitalna komponenta svetske energetike.Spada u najsigurnije,najčistije i najkorisnije fosilno gorivo. Sama pojava vode u vidu vlage u gasu je pokazatelj lošeg kvaliteta gasa. parametri koji mogu dovesti do lošeg kvaliteta prirodnog gasa kao pokazatelj je Wobbe index.U okviru istraživanja u master radu glavni problem funkcionisanja na KPG Paliću predstavlja vlaga u gasu,takođe se može zaključiti da kvalitet gasa zavisi od Wobbe indeksa odnosno, što je Wobbe veći, čistiji je gas, ili ...
    prirodni gas, separatori, separacija, grejači, čileri, tačka rose, Wobbe indeks
    ... aeaaeataakee 44 7 ZAKLJUČAK a a aaa iii a iii a naaniaanaannkaı 49 LITERATURA .. aeeaaaaeaaaaaaaaa a aaaaaaaaaaateot 50 1. UVOD Plin ili gas, dve reči istog pojma sa kojima se susrećemo u zavisnosti od porekla literature ili izvedenih reči koje se upotrebljavaju u gasnoj tehnici. Gas je ustvari ...
    ... bolji kvalitet gasa. Sve dok se ovo ne ugradi KPG Palić ne može da ostvari standarde koje očekuje od njih firma kojoj se isporučuje gas. 49 LITERATURA [1] Arnold, K., Stewart M.,Surface Production Operations, Design of Gas Handling Systems and Facilities Burlington Elsevier, 1999.godine [ ...

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... gual keyword extraction task. The dataset consists of parallel Serbian-English abstracts from scientific articles from the domain of geology and mining including annotated keywords by the authors of articles. In the scientific literature, meth- ods were studied and compared in different languages: besides ...
    ... suffixes from words). For preprocessing of texts in the Serbian language we use: (1) Stop-word list - prepared at the Human Language Technology Group at the University of Belgrade [30], and (2) a Serbian lemmatizer. For lemmatization, we use Serbian morphological elec- tronic dictionaries and grammars ...
    ... published bilingually, they were already available both in Serbian and English, where most of the papers were originally written in Serbian and then translated into English by professional translators. Texts have various lengths, in Serbian the texts contain from 34 to 259 words (on average 100) and ...

  • 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
    ... Montenegro, pp. 385-390, 2005 [In Serbian]. 22. DALMACIJA B. Monitoring of arsenic in public water sup- ply wells in South Banat (in Serbian). Novi Sad, 2008. http://www.eko.vojvodina.gov.rs/files/file/monitoring/voda/ 2008/juzni%20banat%20arsen%202008.pdf [In Serbian]. 23. EU Directive 98/83/EC. Council ...
    ... con- centrations above MPC are seen in countries that share the Pannonian Basin (Serbia, Hungary, Romania, Croatia). Earlier research of arsenic in Serbian groundwater showed As levels from 5 to 349 μg/L [6]. In several regions of the Great Hungarian Plain the As content of groundwa- ter is higher than ...
    ... of Public Health of Vojvodina (in Novi Sad), the Institute of Public Health in Subotica, and at the Institute of Public Health in Belgrade. Current Serbian regulations limit arsenic levels at 10 µg/L [23]. The laboratory of Public Health in Subotica was accredited in 2006 as well as the laboratory in Belgrade ...

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... Cvetana Krstev. 2008. Processing of Serbian. Au- tomata, Texts and Electronic Dictionaries. Fa- culty of Philology of the University of Belgrade. Cvetana Krstev, Jelena Jaćimović, Branislava Šandrih, and Ranka Stanković. 2019. Ana- lysis of the first Serbian Literature Cor- pus of the Late 19th and Early ...
    ... Измењено: 2023-10-14 04:19:47 Serbian NER&Beyond: The Archaic and the Modern Intertwinned Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Serbian NER&Beyond: The Archaic and the ...
    ... best performing across all tested datasets. Having all this in mind, we decided for spaCy as a framework for developing a Serbian NER model on a collection old literary texts. 3 Serbian Collection in the ELTeC As described earlier in Section 1, the focus of the COST Action CA16204 is to compile the ELTeC ...

  • 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
    ... L O [ K O G D R U [ T V A za 2020. godinu COMPTES RENDUS DES SÉANCES DE LA SOCIÉTÉ SERBE DE GÉOLOGIE pour les année 2020 REPORTS OF THE SERBIAN GEOLOGICAL SOCIETY for the year 2020 Beograd, 2020. Стефановић Јелена1, Радивојевић Дејан1 Stefanović Jelena1, Radivojević Dejan1 СЕКВЕНЦИОНА ...
    ... research of these sediments in our area would enable regional and local correlations and could serve for paleogeographic reconstructions. ЛИТЕРАТУРА – REFERENCES AISNER-WILLIAMS, R. & KERANS, C. 2020. Facies and sequence stratigraphic architecture of the Mural Limestone (Albian), Arizona: ...

  • Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS

    Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan (2021)
    Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...
    agregatne zamene, održavanje, mehanizacija, Benefit Cost analiza

  • Classification of mining waste landfills according to legislation in Serbia

    Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić (2021)
    rudarski otpad, jalovina, uredba, deponija, kategorija A, klasifikacija
    ... prema zakonskoj regulativi, kako se ne bi dešavala loša sprovođenja odredbi akata i kako bi se pospešila praksa bezbednog upravljanja otpadom. LITERATURA [1] Classification of mining waste facilities, Final Report, 2007, European Commission, DG Envi-ro- nment, https://-ec.europa.eu/-environme ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... reduce their GHG emissions and minimize thcir environmental impact, while also benefiting from incrcased energy efficicncy and cost savings. LITERATURA/REFERENCES 1} IEA,Key World Energy Statistics 2021. https://iea.blob.core.windows.net/assets/52f66a88-0b63-4ad2-94a5- 29d36e864b82/KeyWorld ...

  • 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

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • 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
    ... posla odnosno stručnog razvoja u rudarstvu i geologiji. Jedini način da se takva slika promeni je obrazovanjem i edukacijom dece i odraslih. Literatura [1] Nikolić, Lj., Mojašević, A. (2016). Obrazovanje - trošak ili investicija za državu. Zbornik radova Pravnog fakulteta u Nišu, 55(73). pp. 201-2018 ...

  • Concepts for Improving Machine Learning Based Landslide Assessment

    Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić (2019)
    Katastar klizišta, Podložnost, Hazard, Mašinsko učenje, Uzorkovanje, Validacija

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... 6 of 21 preparation of a 1 mol/dm3 solution of glucose or fructose, their crystalline structures were destroyed. Then, it is also known from the literature [47,48] that because of HTC treatment, an amorphous network with a high content of carbon is obtained with increased surface functional properties ...
    ... crystallinity of the sample. The increase of its value corresponds to decrease of the crystallinity of the sample and vice versa [47,54]. From the literature [55] the ID/IG value lower than 0.25 indicated perfect crystallinity with a low degree of crystal defects. For samples investigated in this study ...