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Упит dcterms_creator_txt:Yu Wang

162 items

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • 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
    ... Sucker-Rod Pumping Manual; PennWell Books: Tulsa, OK, USA, 2003Curvelet Transform and sparse multi-graph regularized extreme learning 10. Wang, C.; Deng, C.; Wang, S. Imbalance-XGBoost: Leveraging weighted and focal losses for binary label-imbalanced classification with XGBoost. Pattern Recognit ...
    ... PMLR: New York, NY, USA, 2016. 12. Hajizadeh, Y. Machine learning in oil and gas; a SWOT analysis approach. J. Pet. Sci. Eng. 2019 13. Cheng, H.; Yu, H.; Zeng, P.; Osipov, E.; Li, S.; Vyatkin, V. Automatic Recognition of Sucker-Rod Pumping System Working Conditions Using Dynamometer Cards with ...

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... Byron C Wallace. 2015. Computational irony: A survey and new perspectives. Artificial Intelligence Review 43, 4 (2015), 467–483. [34] Po-Ya Angela Wang. 2013. #Irony or #Sarcasm – A Quantitative and Qualita- tive Study Based on Twitter. In Proceedings of the PACLIC: the 27th Pacific Asia Conference ...

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... rs/jscs/ 1184 ANTONIJEVIĆ et al. 42. U.S. Environmental Protection Agency, Federal Register 59 No. 56 (1994) 43. W. Li, J. Zha, Z. Li, L. Yang, Z. Wang, Aquat. Toxicol. 94 (2009) 87 44. K. Frische, J. Schwarzbauer, M. Ricking, Chemosphere 81 (2010) 500 45. C. Yrieix, C. Gonzalez, J. M. Deroux, C. ...

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове

    Јелка Крушић (2023)
    Тецишта су комплексне појаве нестабилности које захтјевају истраживања и испитивањакоја до сада нису рађена код нас у области геотехнике. По механизму, начину активирањаи понашању покренутог материјала се знатно разликују од клизишта. Циљ оведисертације је била примјена нумеричких модела пропагације тецишта на примјеру двијепојаве које су се десиле у Србији као посљедица дјеловања циклона Тамара. Детаљноистраживање тецишта подразумијева теренско картирање, теренска истраживања илабораторијска испитивања одабраних узорака са терена. Од теренских истраживања напримјеру тецишта Селанац урађена су геофизичка истраживања Електричнетомографије док ...
    тециште, нумерички модели пропагације, циклон Тамара, геофизичка истраживања, лабораторијска испитивања, Селанац, Лева река, RAMMS, SPH geoflow, реолошки модел

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... use: possible solutions.– International Journal of Coal Geo­ logy, 50, 425– 443. doi: 10.1016/S0166­5162(02)00125­8 FINKELMAN, R.B., PALMER, C.A. & WANG, P. (2018): Quantification of the modes of occurrence of 42 elements in coal.– International Journal of Coal Geology, 185, 138–160. doi: 10.1016/j ...
    ... in macerals of low­rank coals.– International Journal of Coal Geology, 81, 242–250. doi: 10.1016/j.coal.2009.02.004 LIU, G.J., YANG, P., PENG, Z. & WANG, G. (2003): Geochemistry of trace elements from the no.3 coal seam of Shanxi formation in the Yanzhou mining district.– Ge­ ochimica, 32, 55–62. MAGYAR ...

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... Pyrhönen and J. Laine, Virchows Arch., 2010, 457, 659–667. 54 Z. Dong, Y. Liu, K. F. Scott, L. Levin, K. Gaitonde, R. B. Bracken, B. Burke, Q. J. Zhai, J. Wang, L. Oleksowicz and S. Lu, Carcinogenesis, 2010, 31, 1948–1955. P u b li sh ed o n 1 2 S ep te m b er 2 0 1 1 . D o w n lo ad ed b y ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... Eds.; Elsevier: Amster- dam, The Netherlands, 2013; Chapter 4.2, pp. 451–490, doi:10.1016/b978-0-08-098259-5.00018-4. 23. Zhou, C.H.; Zhao, L.Z.; Wang, A.; Chen, T.H.; He, H.P. Current fundamental and applied research into clay minerals in China. Appl. Clay Sci. 2016, 119, 3–7, doi:10.1016/j.clay ...

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака

    Зоран Гојковић (2023)
    Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...
    Сентинел 1 интерферометрија, слегање, Перманентни скатерери, Костолац

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... pdf (accessed 18 October 2018). Complimentary Contributor Copy 262 Jelena Milić and Tatjana Šolević Knudsen Yin, L., Wang, B., Yuan, H., Deng, S., Huang, J., Wang, Y., Yu, G. (2017). Pay Special Attention to the Transformation Products of PPCPs in Environment. Emerging Contaminants 3 (2): 69—75 ...
    ... and Its Major Tributaries Using SPE-LC-MS2 Analysis. Water Research 44 (7): 2325—35. doi: 10.1016/j.watres.2009.12.035. Lu, S., Yu, Y., Ren, L., Zhang, X., Liu, G., Yu, Y. (2018). Estimation of Intake and Uptake of Bisphenols and Triclosan from Personal Care Products by Dermal Contact. Science of ...
    ... save a large consumption of energy without the additional dehydration step (Wang et al. 2015; Munsin et al. 2013). The addition of hydrous ethanol is also becoming more popular owing to the reduction of harmful emissions (Wang et al. 2015). The use of ethanol in vehicular engines is not a new practice ...

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... Marine isotope stages according to Lisiecki and Raymo (2005). RADOVIĆ, RADONJIĆ, & BILLIA: HUNDSHEIM RHINO FROM SERBIA 12 orhinus handzellensis Wang, 1928; Dicerorhinus hemitoechus intermedius Cigala-Fulgosi, 1976; Dicerorhinus etruscus brachycephalus Guérin, 1980. Having widely been discussed by ...

  • Методологија интегралне анализе сценарија енергетског развоја

    Александар Маџаревић (2019)
    енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас
    ... повећање енергетске ефикасности и коришћења обновљивих извора енергије. Индикатори енергетског развоја су, у оквиру традиционалних методологија (Wang, J.J. et al., 2009), уобичајено релативне или апсолутне бројчане вредности које повезују парцијалне индикаторе енергетског развоја са економским, еколошким ...
    ... најчешће су коришћени технички или енергетски, политичко-економски и еколошки индикатори. У неким истраживањима се јављају и друштвени индикатори (Wang, J.J. et al., 2009). Индикатори техничког и/или енергетског аспекта могу бити сигурно снабдевање, доступност енергената (различити извори и правци ...
    ... степен припадности оцене енергетске безбедности одређеном фази скупу или лингвистичкој промењивој - веома ниска, ниска, умерена, висока, изузетна (Wang et al., 1995). di(Mi, LVi) = √∑ 𝜇𝑀𝑘 − 𝛼𝐿𝑉𝑖𝑘10к=1 , k = 1, …, 10; (5.34) где је LVi = {веома ниска, ниска, умерена, висока, изузетна} ...

  • Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)
    oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem
    ... Mesozoic Atacama fault system, Northern Chile. Tectonophysics 400, 105–125. Chen, Z., Burchfiel, B.C., Liu, Y., King, R.W., Royden, L.H., Tang, W., Wang, E., Zhao, J., Zhang, X., 2000. Global Positioning System measurements from eastern Tibet and their implications for India/Eurasia intercontinental ...
    ... single-grain dating of detrital white mica. Geol. Carpath. 56 (5), 375–382. Neubauer, F., Fritz, H., Genser, J., Kurz, W., Nemes, F., Wallbrecher, E., Wang, X., Willingshofer, E., 2000. Structural evolution within an extruding wedge: model and application to the Alpine-Pannonian system. In: Lehner, F ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... a (Foreman) Paronaella mulleri Pessagno 610 cf. Paronaella sp. x x x Praewilliriedelum convexum (Yao) 1-11 x Semihsuum rutogense (Yang et Wang) x Spinosicapsa spinosa (OžvoldovA) -13 cf. Spinosicapsa sp. x x x STRATIGRAPHY OF THE MIDDLE-UPPER JURASSIC OF THE KRIŽNA NAPPE 15 Table ...
    ... m ovum Dumitrica. F. Olanda sp. G. Hiscocapsa lugeoni O'Dogherty, Goričan et Dumitrica. H. Be//eza decora (Rust). I. Semihsuum rutogense (Yang et Wang). J. Higumastra imbricata (Ožvoldov&). K. Tetraditryma cf. pseudoplena Baumgartner. L. Emiluvia sp. Figs M-O. Sample Fp269; Latest Bajocian-Early ...

  • 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
    ... deformation of the tunnel. Ping Tang [4] forecasted the working face underground pressure by applying a grey system theory and genetic algorithm. Sun Yu et al. [5] proposed a time series prediction model based on a generalized regression neural network to predict the long-term potential deformation trends ...
    ... Forecast the Working Face Underground Pressure Using Grey Model Improved by the Genetic Algorithm. Electron. J. Geotech. Eng. 2011, 16, 1215–1226. 5. Yu, S.; Hongzhen, Z.; Yanna, C. Application of GRNN in Time Series Prediction for Deformation of Surrounding Rocks in Soft Rock Roadway. In Proceedings ...
    ... Reasoning. In Learning Systems and Intelligent Robots; Fu, K.S., Tou, J.T., Eds.; Springer: Boston, MA, USA, 1974. [CrossRef] 20. Huarng, K.H.; Hui, T.; Yu, K. Modelling fuzzy time series with multiple observations. Int. J. Innov. Comput. Inf. Control 2012, 8, 7415–7426. 21. Chen, S.M. Forecasting enrolments ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje