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Упит dcterms_subject_txt:Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry

2353 items

  • 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)

  • 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
    ... section Materials and Methods, we de- scribe the model of forecasting based on observed data and multivariate singular spectrum analysis. We introduce the fuzzy time series concept to make clusters describing the gate road support configuration deformation for every time point over observed and forecasted ...
    ... from the rock–soil composite material model, where an analytic method, along with existing data from physical model tests, was applied to acquire results. Good consistency, both in terms of strength and failure Energies 2021, 14, 3710. https://doi.org/10.3390/en14123710 https://www.mdpi.com/journal/energies ...
    ... from the rock-soil composite material model, where an analytic method, along with existing data from physical model tests, was applied to acquire results. Good consistency, both in terms of strength and failure Energies 2021, 14, 3710. https://doi.org/10.3390/en14123710 https:/ /www.mdpi.com/journal/energies ...

  • Old or New, We Repair, Adjust and Alter (Texts)

    Cvetana Krstev, Ranka Stanković (2020)
    U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.
    ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja
    ... entities in texts”. Theoretical Computer Science Vol. 313, no. 1 (2004): 93–104 Henton, Caroline G. “Automated transformation from American English to British English”, 2004, uS Patent 6,738,738 Jaćimović, Jelena. “Textometric methods and the TXM platform for cor- pus analysis and visual presentation” ...
    ... confused, for instance letters ‘п’, ‘и’, ‘н’, letters ‘с’ and ‘е’, letters ‘с’ and ‘о’ (but not ‘е’ and ‘о’); – A group of letters can be confused for one letter or another group of letters, e.g. two letters ‘га’ and one letter ‘ш’; two letters ‘шп’ and two letters ‘иш’; – Letters can be confused for digits ...
    ... Latin alphabet that can be accommo- dated by ASCII character set, and affects five letters: š, d, č, ć and ž. As a result, some letters or letter groups become ambiguous: – c – can stand for č and ć (and c); – z – can stand for ž (and z ); 5 The example text is from the novel by Lazar Komarčić ...

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... [1-7]. In essence, availability represents the physical presence of energy re- sources, as well as possibility of the community to use these resources. Within the availability, there are numerous influential components whose individual contribution and effects should be evaluated. * Corresponding ...
    ... OF SERBIA by Boban S. PAVLOVIĆ* and Dejan D. IVEZIĆ Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia Original scientific paper DOI:10.2298/TSCI160923303P There is a range of modern approaches and models in literature for the evaluation and determination of energy security ...
    ... diversification and energy supplier diversifica- tion, – the accessibility to resources, in terms of the availability of related energy infrastructure and energy transportation infrastructure, and – geopolitical relations. In order to provide a framework for identifying, measuring and managing v ...

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed ...
    ... such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher ...
    ... measure- ments, geodetic benchmark survey monitoring, UAV imaging, processing and analysis, and PSInSAR data processing and analysis. Results of all monitoring activ- ities were analysed and used for cross-correlation and for verification of monitoring results obtained from different techniques. ...

  • 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
    ... region-specific emission factors are applied. In case the physical measurements of emitted GHG arc available thc inventory compiler can derive the emission factors and use them in this ticr, ensuring that all the actions are transparent and well documcented. Input data for invcntorying emissions ...
    ... sources and provide a breakdown by activity and by consequently emitted greenhouse gas for a typical onshore oil and gas production and processing facility, including fugitivc emission and flaring. The calculation is based on data specifically derived to represent a typical upstream oil and gas company ...
    ... content and hcating value of the fuel and is not influenced by combustion conditions. On the other hand, emission factors for non-CO» gases, such as methane and nitrous oxide, depend on technology and operating. conditions and vary significantly between different combustion sources and over time ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... (oDP Sites 1262, 1263, and 1266): Evidence from Mn and U enrichment factors. Paleo- ceanography, 25: PA4202. DEWEy, j. F., CANDE, S. & PITMAN, W. C. 1989. Tectonic evolu- tion of the India/Eurasia Collision zone. Eclogae geol. Helv., 82 (3): 717–734. EARLE, S. 2015. Physical Geology. victoria, B ...
    ... n rates spatially and temporary varies and depend on palaeoecological and palaeogeographic conditions. Generally, well-rounded and fine-grained sediments reflect calm and slow sed- imentation, while angular coarse-grai ned sediments are mostly related to short palaeotransport and fast sedimentation ...
    ... his brothers died from tuber- culosis at young age and besides his mother jeli - saveta and grandmother, his uncle vasilije Maučević took care of him and sisters. In 1889 he left to his uncle Paja Maučević to osijek where he went to Gymnasium and very soon became the best student even though before ...

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e physical-archaeological modeling tech- niques, First Break, 21, 2: 51-61. Eppelbaum, L. 2010. Application of Potential Geophysical Fields at Archa- eological ...
    ... EEGS Symposium on the Application of Geop- hysics to Engineering and Environmental Problems, Apr 2010, cp-175-00124. Eppelbaum, L.V. 2015. Quantitative Interpretation of Magnetic Anomalies from Thick Bed, Horizontal Plate and Intermediate Models Under Complex. Archaeological Prospection 22, ...
    ... Pieraan- toni. P. P. 2018. Magnetic field mo- delling and analysis of uncertainty in archaeological geophysics. Archaeologi- cal Prospection 26, 2: 137-153. Scollar, I., Tabbagh, A., Hesse, A., Herzog, I., 1990. Archaeological Pros- pecting and Remote Sensing. Cambrid- 24 C u r re n t i n t e ...

  • Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities

    Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov (2024)
    Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...
    полилексемске језинице, именовани ентитет, вишезначност значења речи, складиште смисла, LLOD

  • 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

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)
    ... The median follow-up of our patients was 10 years and ranged from 8 months to 25 years. Patients were monitored every 3 months during the first year, at 6-month intervals during the next 5 years, and annually thereafter. Routine follow-up included physical examination of the patient’s neck, laboratory tests ...
    ... 17 Pellegriti et al,27 and Ito et al28 found a similar prevalence of multifocal tumor foci and lymph node metastases (12.1% and 13.4%, 31.8% and 30.1%, and 42.8% and 47.9%, respec- tively). Ito et al reported more than 40% of patients who presented with lymph node metastases and multiple tumor foci.2 ...
    ... was 97.7% T 1.3% after 5 and 10 years; the probability of disease-specific survival was 95.9% T 2.2% after 15, 20, 25, and 28 years after the initial treatment and was significantly influenced by recurrence, clinical stage, and patients’ age (P = 0.0001, P = 0.0005, and P = 0.02, respectively). Sex ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... systems stem from earthquakes'*” to neu- ronal networks”, from compression of wood samples! and porous materials**-~4 to deformation and fracture of stressed materials*>-*’, to name just a few. One very important common feature of these systems is that such avalanche-like signals appear to exhibit complex ...
    ... Compression of a Porous Material and Earthquakes. Phys. Rev. Lett. 110, 088702 (2013). 23. Navas-Portella, V., Corral, A. & Vives, E. Phys. Rev. E 94, 033005 (2016) 24. Soprunyuk, V. et al. Strain intermittency due to avalanches in ferroelastic and porous materials. J. Stat. Mech 29, 224002 (2017) ...
    ... the Compression of a Porous Material and Earthquakes. Phys. Rev. Lett. 110, 088702 (2013). 23. Navas-Portella, V., Corral, A. & Vives, E. Phys. Rev. E 94, 033005 (2016) 24. Soprunyuk, V. et al. Strain intermittency due to avalanches in ferroelastic and porous materials. J. Stat. Mech 29, 224002 (2017). ...

  • Elektromagnetska sprega sistema litosfera-atmosfera-jonosfera

    Aleksandra B. Kolarski (2016-08-25)
    Radio talasi vrlo niskih frekvencija VLF (eng. Very Low Frequency) frekventnog opsega od 3 do 30 kHz, koji se prostiru talasovodom Zemlja-jonosfera (50 -90 km) su, kao što je poznato, efikasni i nezamenljivi u osmatranju pojava u niskoj jonosferi, sa tla...
    prostiranje talasa vrlo niskih frekvencija, talasovod Zemlja-jonosfera, globalno električno kolo, atmosfersko električno pražnjenje, kratkotrajne svetlosne pojave
    ... E. M., Sentman, D. D., Heavner, M. J., Hampton, D. L., Vaughan Jr., O. H. (1998). Blue jets: their relationship to lightning and very large hailfall, and their physical mechanisms for their production. J. Atmos. Sol.-Terr. Phys., 60, pp. 713–724. Wescott, E. M., Sentman, D., Osborne, D., Hampton ...
    ... Sol.-Terr. Phys., 65, pp. 525–535. Schunk, R. W., Nagy, A. F. (2000). Ionospheres: physics, plasma physics and chemistry. Cambridge University Press. 570 pp. Schwenn, R. (2006). Space Weather: The Solar Perspective. Living Rev. Solar Phys., 3, 2. Sentman, D. D., Wescott, E.M., Osborne, D. L., Hampton ...
    ... halos and elves) and LEP (Lightning-induced Electron precipitation) events were identified by their signatures on VLF perturbations. On the basis of the sprite event registration time from I.M.T.N. (with 0.001 - 0.1 s resolution) and in coincidence with the lightning discharge time (WWLLN and EUCLID ...

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... for Determining the Uniaxial Compressive Strength and Deformability of Rock Materials; International Society for Rock Mechanics and Rock Engineering: Lisbon, Portugal, 1979. 24. Radojević, J. Rock Mechanics; University of Belgrade—Faculty of Mining and Geology: Beograd, Serbia, 1992. 25. Braja, D. Principles ...
    ... parameter that is largely independent of the slice cross-sectional area and that it is practically constant. Accordingly, Klige [1] has published test results in which the specific digging resistances depend substantially on soil’s physical and mechanical properties, as long as they show at least a small degree ...
    ... Validation, V.R., S.Ð., and F.M.; Formal analysis, V.R.; Investigation, V.Č. and V.R.; Resources, V.Č. and V.R.; Data curation, V.R., S.Ð., and F.M.; Writing—original draft preparation, V.Č.; Writing—review and editing, V.R.; Visualization, S.Ð. and F.M. All authors have read and agreed to the published ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... Ristović performed the application of CPM method and analyzed the empirical data; and Stevan Mušicki and Ivana Filipović contributed materials and analysis tools. Conflicts of Interest: The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection ...
    ... based on the assessment of adverse impacts in order to avoid: irrational use of energy and raw materials, introduction of pollutants into the environment, and the disturbance of biodiversity [6]. Energy efficiency and exhaust fumes are indicators of the state of the environment, defined by a set of world ...
    ... procedures based on the implementation of the standard ISO 31000 for risk assessment in mining and energy complexes is suitable because it encompasses all types of risk (biological, chemical, and physical—according to the degree of identification; accidental or Energies 2016, 9, 1071 16 of 20 cu ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... will have to be closely linked and compatible with KaNaKov to avoid duplication of resources and to ensure that full synergies are achieved. 4. Materials and Methods 4.1. Geodatabase Model The geodatabase model was developed using Unified Modeling Language (UML) and Computer-Aided Software Engineering ...
    ... taken into account: (a) the physical degradation of the surface, relief and environment that took place, especially in the case of improper and unplanned exploitation; (b) the impact of mineral substances present in the exploited deposits on environmental features; and (c) the impact of various municipal ...
    ... municipal waste materials, which were deposited without authorization, organization, preparation and planning in the area of abandoned mines. From the geological point of view, it is favorable that in the area in Vojvodina there are no mines of metal mineral resources, which usually have a more or ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... radiation is the primary source of energy for many physical and biological processes on Earth and it is one of the basic preconditions for the existence of the living world. In essence, energy received from the Sun is in the form of light and thermal energy. When considering the total impact of ...
    ... Contemporary Materials (Renewable energy sources), Volume II-2, pp. 204 - 209. PBC GIS, 2019. Site Modeling in Context - Obtaining And Transforming Elevation Data, pbc Geographic Information Services, available at: http://wwWw.pbcgis.com/dem/. Republic of Serbia, Ministry of Mining and Energy, 2018 ...
    ... energy, and energy in biomass and · fossil fuels, · captured · through photosynthesis. For the purpose of heating and electricity production, the application of solar panels (solar thermal panels for heating: water and PhotoVoltaic (PV) solar panels for electricity 325 production) and the ...

  • Употреба веб платформе Омека за дигиталне библиотеке из домена рударства

    Александра Томашевић, Биљана Лазић, Далибор Воркапић, Михаило Шкорић, Љиљана Колоња (2017)
    У овом раду биће представљена Омека, веб платформа за приказивање дигиталних колекциjа и систем за управљање њиховим садржаjем. Њену примену у области техничких наука, а конкретно у области рударства, приказаћемо на примеру дигиталне библиотеке ROmeka@RGF. За Омеку смо се определили првенствено због чињенице да jе jедноставна за коришћење, има обимну пратећу документациjу и не захтева уско специфичне информатичке вештине што jе чини приступачном за већину корисника, а нарочито за рударске инжењере, коjима jе ова дигитална библиотека првенствено намењена. Документа ...
    Омека, дигиталне библиотеке, рударство
    ... Tomašević and Bojan Zlatić. “Ter- minological and Lexical Resources Used to Provide Open Multilingual Educational Resources”. Belgrade, Serbia, 2016. http://www.baektel. eu/documents/conferences/eLearning_2016_BL_DS_AT_BZ.pdf Stanković, Ranka, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac and Miloš ...
    ... Language Resources and Evaluation (LREC), Istanbul, Turkey, 1710–1717, 2012. http://www.lrec-conf.org/proceedings/lrec2012/ pdf/375_Paper.pdf Stanković, Ranka, Cvetana Krstev, Biljana Lazić Ivan Obradović and Alek- sandra Trtovac. “Rule-based Automatic Multi-Word Term Extraction and Lemmatization”. ...
    ... обjекти, сервиси за ћаскање; – скупови података (Dataset), кодирани подаци у дефинисаноj структури: листе, табеле и базе података; – физички обjекти (Physical Object), неживи, тродимензионални чврсти обjекти, коjе у дигиталним библиотекама репрезентуjу типови као што су: покретне слике или статичне слике ...

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology