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Упит dcterms_subject_txt:Information Extraction

182 items

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... ranged from 5–10 min, with a stress rate of 0.1–0.3 kN/s. The specimens were tested at room temperature of 20 ± 2 ◦C, and the time between field extraction of samples and the laboratory testing was no longer than 15 days. The values of horizontal σ3 and vertical σ1 stress were obtained based on the ...
    ... test [19]. A triaxial test was performed for five different values of confining pressures (σ3), namely, 5, 10, 15, 20, and 30 MPa. Considering that information on “in-situ” stress conditions was not available for this research, the values of confining pressures (σ3) were defined according to the recommendations ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • 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

  • Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije

    Branko R. Miladinović (2016-04-27)
    Ugalj predstavlja energent na čijoj osnovi se razvija privreda celog sveta.Zato mu se pridaje velika pažnja u eksploataciji i preradi, bez obzira na mnogeštetne uticaje na životnu sredinu, a posebno na efekat staklene bašte koji sestvara emisijom zagađujućih materija u atmosferu radom termoelektrana naugalj.U Srbiji, resurs koji se danas u najvećoj meri koristi u proizvodnjielektrične energije je ugalj i on učestvuje u proseku sa 70 %. U strukturi ukupneproizvodnje ugljeva, dominiraju lignitski ugljevi sa učešćem od 98 %, a ...
    Srbija, kameni i mrki ugalj, podzemna eksploatacija, preradauglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životnasredina
    ... and hard coal extraction in Serbia Branko R. Miladinović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije;Hydrogeoecological conditions for black lignite and hard coal extraction in Serbia | ...
    ... 3) VI HYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD COAL EXTRACTION IN SERBIA S U M M A R Y Coal is a fossil fuel and one of the drivers of the global economy. Consequently, coal extraction and processing receive much attention, despite adverse environmental impacts ...
    ... BELGRADE FACULTY OF MINING AND GEOLOGY Branko R. Miladinović HIYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD COAL EXTRACTION IN SERBIA Doctoral Dissertatin Belgrade, 2015. I Mentor: Dr Ivan Matić, redovni profesor ...

  • 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)
    ... Calibration Standard I; Bruker Daltonics), while the data files were transferred to Flex Analysis version 2.4 (Bruker Daltonics) for automated peak extraction. Mass spectra recorded on a Voyager spectrometer were calibrated by setting the peak of the protonated DHB matrix to its appropriate value (155 ...
    ... products of the PC digestion with PLA2 with and without metal complexes. Along with high sensitivity and possibility to acquire high number of information from a single spectrum, the main advantage of MALDI-TOF MS is that no labeling of the substrate is required.35 Briefly, this approach for the ...
    ... phospholipid substrate and lysoproducts derived from PLA2 activity can simultaneously be visualised in the same mass spectrum. Even quantitative information can be obtained by MALDI-TOF MS with the addition of the internal standard, as demon- strated in previous publications.31,41–44 The only problem ...

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus
    ... criminal activities or as a derogatory word to insult someone. Information integration beyond the level of dictionaries and across the language resource community has become an important concern. The most promising technology for information integration is the Linked (Open) Data (LOD) paradigm that is ...
    ... also be compared with the corpus of standard Serbian (as reference). Since frequency information is a crucial component in human language technology, the FrAC module facilitates sharing and utilising this valued information [9], as presented in Listing 3. 4 Discussion and conclusion In this paper, we presented ...
    ... building the data-set of abusive language in Serbian. Further details about manual data annotation of corpus data are given in Section 2.2 while the extraction of abusive triggers is explained in Section 2.3. The Section 3 presents results of our research: Twitter data analysis (Subsection 3.1), the outcome ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... In the frame of the GAIA plan, some information can be lost after the projection. Based on the main components, the presentation is defined by two vectors, responding to the basic flow of one criterion. Although GAIA includes some percentage of total information, it does not provide strong graphic support ...
    ... In the frame of the GAIA plan, some information can be lost after the projection. Based on the main components, the presentation is defined by two vectors, responding to the basic flow of one criterion. Although GAIA includes some percentage of total information, it does not provide strong graphic support ...
    ... often formed in areas which have other potential (agriculture, water supply, urban areas, water flows, etc.). In general, all material left after the extraction of minerals or after the process of exploitation is waste, which when dumped on the deposit spot creates the tailing pond [2]. Vast areas are covered ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... heat to the jth consumer. The primary carbon dioxide emission coefficients are calculated by taking into account emissions that occur dur- ing extraction, processing/refining, storage, transport and combustion of the fuels. Since there are no national values for the primary carbon dioxide coefficients ...
    ... addition, the methodology provides a possibility for the estimation of the technical potential of wastewater heat for cities without WWTP. This information can be valuable in the preparation phase and WWTP loca- tion selection. In this paper, the proposed methodology was applied for Serbia as a case ...
    ... amounts are set in relation to the number of inhabitants of the selected city. In that way, the indicator of energy availability (which provides information about heat energy produced utilizing waste heat per capita) is obtained, as well as an indicator of primary energy savings per capita. These indicators ...

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Процена емисије гасова са ефектом стаклене баште као последице енергетске активности

    Горана Остојић (2024)
    Рад се бави анализом и проценом емисија гасова са ефектом стаклене баште, са посебним акцентом на емисије које настају као последица енергетских активности. Ефекат стаклене баште представља природни процес који је неопходан за одржавање живота на Земљи, али антропогене активности, попут индустријске производње и сагоревања фосилних горива, значајно повећавају концентрацију ових гасова у атмосфери, што доводи до климатских промена. Рад истражује узроке, последице и могућности за смањење емисија гасова, као и развој стратегија за ублажавање негативних ефеката на животну ...
    емисија гасова, ефекат стаклене баште, енергетске активности, климатске промене, мобилно сагоревање, стационарно сагоревање
    ... as mechanical work to a process or for usec away from the apparatus. ustri Compnses emissions from fuels combusted by the fuel n Energylh ii extraction or energy-producing industnes. Sum of emisstons from main activity producers of clectricity generation, combined hcat and powcr gencration, and ...
    ... for thc producton of charcoal, bagasse, saw dust, cotton stalks and carbonizing of biofuels as well as fuel used for coal mining, oil and gas extraction and the processing and upgrading of natural gas. This category also icludes emissions from - processmng for CO,; capture and storage. Combuston ...
    ... for ground transport which ıs reported under | A 3 e Other Transportation. Also exclude fuel for statonary combustion at atrports, report this information under the appropriate stationary combustion category. Emissions from flights that depart ın one country and arive in a different country. include ...

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... for example in LEE et al., (2012), relatively com- plex algorithms are being engaged to check the sensitivity of a landslide susceptibility model. Extraction of a particular land- slide conditioning parameter and repetition of the validation pro- cess is one approach to test model sensitivity (LEE & TALIB ...
    ... data requirements in large study areas, and (4) the use of oversimplified factors assumed to control or trigger landslides, by only considering information that is relatively easily mapped or derivable from a digital elevation model (DEM). Furthermore, GIS based statistical landslide sus- ceptibility ...
    ... uncertainty and sensitivity analysis approach for GIS-based multicriteria landslide susceptibility mapping.– Interna- tional Journal of Geographical Information Science, 28/3, 610–638. doi: 10.1080/ 13658816.2013.869821 FRATTINI, P., CROSTA, G. & CARRARA, A. (2010): Techniques for evaluating the performance ...

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability
    ... then centrifuged for 20 min at 3400× g, and supernatants were separated. The DK-I-60-3 was extracted from plasma and supernatants by solid-phase extraction using Oasis HLB cartridges (Waters Corporation, Milford, MA, USA). The cartridges were pre- Pharmaceutics 2021, 13, 1188 6 of 19 conditioned ...
    ... n approach and minimize the risk of failures in clinical trials due to insufficient or highly variable drug exposures [4]. By evaluating basic information on molecular structure, molecular weight, as well as results from preformulation studies such as solubility in water and oils, melting tempera- ture ...
    ... Although a very powerful method for particle size determination, dynamic light scat- tering (DLS) is limited to spherical objects, as it provides information about hydrodynamic radius [21]. Moreover, although it is suitable to detect major issues with sample integrity and stability because of the low ...

  • Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala

    Miodrag Čelebić (2024)
    Izbor optimalne mehanizacije u diskontinualnom sistemu transporta je jedna od najvažnijih odluka koju treba donijeti prilikom projektovanja površinskih kopova. Pri izboru optimalne mehanizacije, uticaj ima veliki broj faktora, kako prirodnih – geoloških i ekoloških, tako i tehničkih, ekonomskih i socijanih. Neki od njih se mogu izraziti numerički, u određenim mijernim jedinicama, a neki opisno, lingvističkim varijablama, shodno uslovima koji vladaju na rudnim ležištima, a koje karakterišu visok stepen neizvjesnosti i neodređenosti kako prilikom istraživanja, tako i tokom procesa eksploatacije ...
    izbor mehanizacije, tehnologija eksploatacije, diskontinualani sistem, ekspertsko odlučivanje, lingvističke varijable, MCDM, FAHP

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... Economic Investigation. Appl. Sci. 2020, 10, 6639. [CrossRef] 2. Ilzarbe, J.M.B.; Malpartida, J.G.; Chandro, E.R. Recent Patents on Geothermal Power Extraction Devices. Recent Patents Eng. 2013, 7, 2–24. [CrossRef] 3. IRENA (International Renewable Energy Agency). Available online: https://www.irena.or ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... opsegu od 31,74% do 98.09%. Odgovarajući regresioni model odabran je na osnovu standardnih kriterijuma vrednosti BIC (Bayesian Information Criterion), AIK (Akaike Information Criterion) i RMSE (Root Mean Square Error) parametara. Koeficijent određivanja za uklanjanje olova iznosi R2=0,878. Približne ...
    ... zaštite životne sredine „Docent dr Milena Dalmacija“, 2021. OR-09 [12] Sachindra, N.M., & Mahendrakar, N.S. (2005). Process optimization for extraction of carotenoids from shrimp waste with vegetable oils. Bioresource Technology, 96, 1195-1200. [13] Rafalowski, R., Zofa, Z., Kuncewicz, A., & Zbigniew ...
    ... N., & Silva, C. (2020). Enrichment of sunflower oil with β‐carotene from carrots: Maximization and thermodynamic parameters of the β‐carotene extraction and oil characterization. Journal of Food Processing and Preservation, e14399. [15] Akkaya, M. (2018). Fatty acid compositions of sunflowers (Helianthus ...

  • 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
    ... traditional indicators [8]. It is essential that all approaches involve defining data—information category that is of neutral character and gets its meaning in relation to the indicator, which is necessarily meaningful information that is determined by the context of its application [9]. Energies 2016, 9 ...
    ... Federal Ministry for Development, Science and Environment: Belgrade, Serbia, 1997. 7. Miljkovic, M.; Stojkovic, Z. Influence of Metal Ores Surface Extraction to Environmental Factors of the Environment; Faculty of Engineering, Department for mining engineering, University of Belgrade: Bor, Serbia, 1998 ...
    ... sustainable development. Energies 2016, 9, 1071 19 of 20 Acknowledgments: The presented research is a part of the projects “Development of new information and communication technologies, based on advances mathematical methods, with applications in medicine, telecommunications, power systems, protection ...

  • Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda

    Đorđije M. Božović (2023)
    Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...
    modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package
    ... computer programs. The groundwater dynamics observed over a 15‒year period were simulated on the model. The wells, along with their groundwater extraction mechanism, were represented in real geometric, structural, and hydraulic terms, whereas the laterals were simulated using a mathematical (numerical) ...
    ... resulted in a proposal of an optimal, hydraulically representative, and hydrodynamically efficient methodology for defining the current groundwater extraction capacity of the laterals by quantifying the hydraulic properties of the laterals and the rate of advance of ageing processes by monitoring the ...

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • 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