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Упит dcterms_subject_txt:Geologic information system

775 items

  • Речници у дигиталном добу - информатичка подршка за српски језик

    Биљана Рујевић (2022)
    Морфолошки речници српског језика представљају електронски језички ресурс који има значајну историју развоја и коришћења за потребе обраде природних језика. С обзиром на то да су чувани у облику датотека чији је број нарастао па је самим тим управљање речницима постало отежано јавила се потреба за смештањем информација из речника у облик лексикографске базе. Како би се омогућио симултани рад на развоју речника за више корисника јавила се потреба за веб-апликацијом заснованој на лексикографској бази. Како би се размотриле ...
    електронски речници, лексикографска база података, лексички ресурси, српски језик

  • Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке

    Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић (2018)
    ...  of Kremenite njive  is  located  in  the settlement Barajevo near Belgrade  (Serbia). Applied magnetic investigations were supposed to provide information on the dimensions and  most probable depths on which archaeological objects are  located, whose presence  is assumed on the  basis of earlier ar ...
    ... e  tangents procedure, which, although significantly  improved compared to the original graphic procedu‐ res (Eppelbaum, 2015), give about 25% information on the depth of the source of magnetic anomalies  (Isles & Rankin, 2013). In recent years, an algorithm has been developed that enables a rapid  ...
    ... 5 m, and the sampling  interval was 0.5  s. Using  the  integrated GPS device,  the measurement points were measured  in  the  WGS84 geographic system and the sampling time required to correct the daily variations from the read‐ ings from the lower sensor, since in all cases in the available lite ...

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... possible source rocks in the re- gional petroleum system. �ermal maturity was studied by means of Rock-Eval pyrolysis and vitrinite re�ectance measurements. GEOLOGICAL SETTING �e Dinarides are located in the central area of the Mediterranean system of orogens (Fig. 1A). �eir evolution was determined ...
    ... the petroleum system. COMPOSITION OF ORGANIC MATTER AND THERMAL MATURITY 3 Fig. 2. Simplified lithostratigraphic column of the Adriatic Carbonate Platform in East Herzegovina (after Vlahovic¢ et al., 2005, and Hravatovié, 2006, modified) with possible elements of the petroleum system. of kerogen ...
    ... possible source rocks in the re- gional petroleum system. Thermal maturity was studied by means of Rock-Eval pyrolysis and vitrinite reflectance measurements. GEOLOGICAL SETTING The Dinarides are located in the central area of the Mediterranean system of orogens (Fig. 1A). Their evolution was determined ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... injection system, the exergy expenditure is divided into two parts. One part refers to the work supplied to the system, and the work is a type of perfect exergy, which can be utilized fully. The other part refers to the difference between the exergy entering and the exergy leaving the system with respect ...
    ... entering and leaving the system with a certain flow rate (n'). The third term is the net power obtainable from the heat transfer (Q'i), and the final term is the net power supplied to the system (-W-j) due to electrical power supplied. Finally, the exergy efficiency of each system is defined as; n ...
    ... injection and placement of CO» in underground formations. Potential storage formations can occur in onshore and offshore formations, and each type of geologic formation presents different risks and rewards. CO» accumulation naturally can be found in geological sites round the world, mostly in sedimentary ...

  • Mathematical modeling to define catchment size and real evapotranspiration (case study: Andrića karst spring, Western Serbia)

    Marina Čokorilo Ilić, Vesna Ristić Vakanjac, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Water resources in karst are extremely important sources of drinking water supply. The quality of groundwater formed in karst aquifers is generally high and in most cases only chlorination is required. However, from a hydrogeological perspective, these water resources are the least studied. Often only basic information is available on catchment size, groundwater reserves (dynamic and static, if any) and groundwater balance. Detailed hydrogeological investigations and long-term monitoring of karst spring discharges are needed to acquire such information. In ...
    karstno vrelo, veličina sliva, stvarna evapotranspiracija, karstno vrelo Andrića

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia

    Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)
    Earth-Surface Processes

  • Football terminology: compilation and transformation into OntoLex-Lemon resource

    Jelena Lazarević, Ranka Stanković, Mihailo Škorić, Biljana Rujević (2023)
    У овом раду представља се пројекат који је у развоју, креирање првог дигиталног фудбалског речника на српском језику, као и да демонстрација примене модела OntoLex и љегових модула. OntoLex-FrAC модул укључује информације о учесталости и примерима употребе екстрахованих из корпуса. У овом случају, креиран је корпус за специфичан домен под називом СрФудКо, који садржи чланке вести о фудбалу на српском језику. Вишечлани термини аутоматски су екстраховани из српског корпуса, а затим ручно евалуирани и класификовани као спортски или ...
    повезани отворени подаци, корпус, СрФудКо, OntoLex, OntoLex-FrAC

  • Topic Modeling of the SrpELTeC Corpus: A Comparison of NMF, LDA, and BERTopic

    Teodora Mihajlov, Milica Ikonić Nešić, Ranka Stanković, Olivera Kitanović (2024)
    Modeliranje tema je efikasan način da se dobije uvid u velike količine podataka. Neki od najčešće korišćenih metoda za modeliranje tema su Latentna Dirihleova alokacija (LDA) i faktorizacija nenegativne matrice (NMF). Međutim, sa porastom modela samopažnje i unapred obučenih jezičkih modela, pojavili su se novi načini za ekstrakcju tema. BERTopic predstavlja novi pristup modeliranju tema. U ovom radu smo uporedili performanse LDA, NMF i BERTopic na književnim tekstovima na srpskom, merenjem koherentnosti tema i raznovrsnosti tema, kao i kvalitativnom ...
    jezički modeli, LDA, modeliranje tema, BERT, BERTopic

  • CC-PESTO: a novel GIS-based method for assessing the vulnerability of karst groundwater resources to the effects of climate change

    Zoran Stevanović, Veljko Marinović, Jelena Krstajić (2020)
    The new GIS-based CC-PESTO method is shown to successfully assess and map the vulnerability/resilience of karst aquifers to effects of climate change. Karst aquifers were chosen due to their importance at the global level and widespread utilisation in potable water supply and irrigation, but also because of their hydrogeological complexity. The method was developed to assess the intrinsic vulnerability of aquifers, without considering the direct impact of variable climate factors, but considering the adaptive capacity of aquifers in response ...
    Klimatske promenem Karst, Ranjivost, Geografski informacioni sistemi, Crna Gora, Srbija

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... transition; magnetic properties; crystal field splitting; lanthanide silicates. CCDC references: 1774871; 2089284 Supporting information: this article has supporting information at journals.iucr.org/b Low-temperature phase transition and magnetic properties of K3YbSi2O7 Predrag Dabić,a* Volker Kahlenberg ...
    ... its storage in electronic databases other than as specified above is not permitted without prior permission in writing from the IUCr. For further information see https://journals.iucr.org/services/authorrights.html Acta Cryst. (2021). B77, 584–593 P. Dabić et al. · LT phase transition and magnetic properties ...
    ... the higher symmetrical second-rank tensor of the hexagonal structure (Peterse & Palm, 1966) (for details, see CIF file within the supporting information). Furthermore, the twinning itself lead to significant problems when refining atomic displacement parameters in highly absorbing compounds due ...

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... pH 2. We tested wide range of Al'? concentration that included physiologi- cal as well as toxic doses of metalion because oflackof similar information in available literature. T'he effects of chosen concentrations of AlP~ ions on 7 vitro pepsin activity are presented in Figure 1. It is obviously ...
    ... d concentration of aluminium does not cause changes in electrophoretic mobility of haemoglobin. Discussion In the available literature, information about the influence of toxic metal ions on the activity of extra- cellular enzymes is scant and controversial. Variability of data results ...
    ... ry ion can be toxic to many organisms. Even itis a most abundant metal, comprising almost 8% of the earth”s crust; its concentration in living system is very low. Aluminium can occur in a number of different forms in water, and his chemistry in water solutions is very complex where many chemical ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • Spatial distribution of major and trace elements in artificial lakes in Serbia: health risk indices and suitability of water for drinking and irrigation purposes

    Goran Marković, Aleksandar Ž. Kostić, Nebojša Đ. Pantelić, Radojka Maletić, Jana Štrbački, Jovan Cakić, Lazar Kaluđerović, Biljana P. Dojčinović, Angelo Maria Giuffrè, Jelena B. Popović-Djordjević (2023)
    Lakes and reservoirs are the main water resources for household, irrigation, and industrial use. Hence, it is necessary to control water pollution and have reliable information on water quality, which refers to its suitability for a particular purpose. The main objective of this study was to evaluate the suitability of water for drinking and irrigation purposes from ten artificial lakes on the territory of the Republic of Serbia. The physicochemical parameters were determined using standard analytical methods, whereas the ...
    Management, Monitoring, Policy and Law, Pollution, General Environmental Science, General Medicine

  • 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
    ... the same. Serbia has no standard concession system for exploration and/or exploitation of min- eral resources unless the government decides to launch a tender or auction for some spe- cific projects or area(s). Otherwise, a ‘first come, first served’ system is applied, which means that any interested ...
    ... negative, or may correlate to mineral reserves if feasibility study is positive. Table 6. Comparison between Serbian actual reporting system and CRIRSCO based reporting system, modified after [67]. CRIRSCO Reporting Standard Exploration Results Mineral Resources Mineral Reserves Inferred Indicated ...
    ... surface geology alone. Resources 2021, 10, 63 14 of 18 Figure 3. Comparison between the Serbian actual reporting system and the CRIRSCO-based re- porting system. The Serbian C1 category can be a nightmare in some cases for experts not familiar with Serbian practice in this field. Namely ...

  • 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
    ... 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 ...
    ... (3): 292–300. OH, H.J., LEE, S., CHOTIKASATHIEN, W., KIM, C.H. & KWON, J.H. (2009): Predictive landslide susceptibility mapping using spatial information in the Pech- abun area of Thailand.– Environmental Geology, 57/3, 641–651. doi: 10.1007/ s00254-008-1342-9 PAMELA, P., SADISUN, I. & ARIFIANTI, ...

  • Knowledge Graphs in the Era of Large Language Models: Opportunities and Challenges

    Danka Jokić, Ranka Stanković, Jelena Jaćimović (2024)
    Pojava velikih jezičkih modela (eng. Large Language Models ili LLMs) je značajno uticala na oblast veštačke inteligencije, naročito u oblastima obrade prirodnog jezika i generisanju teksta. Međutim, ključno ograničenje ovih modela leži u nedostatku strukturiranog znanja i sposobnosti zaključivanja, što otežava njihovu primenu u stvarnom svetu, gde se zahteva tačnost iznetih činjenica i zaključivanje na osnovu konteksta. S druge strane, grafovi znanja nude primamljivo rešenje. Oni pružaju bogat izvor strukturiranog znanja, tako što predstavljaju entitete i njihove relacije u ...
    grafovi znanja, veliki jezički modeli, obrada prirodnog jezika, strukturirano znanje, kvalitet podataka, objašnjiva veštačka inteligencija, bezbednost sadržaja na internetu

  • Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema

    Svetlana M. Štrbac-Savić (2016-06-10)
    Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...
    podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija
    ... of Innovative Computing, Information and Control Volume 9, Number 7, July 2013 pp. 2907-2918, 2013. [HUO86] Huo Junjiang, On the applications of Grey System Theory and methods to history studies, Social Science 10, pp. 64-68, 1986. [HUO86a] Huo Junjiang, Grey System methods and investigation ...
    ... Skills and Learning Results of Aerobics”, Advances in information Sciences and Service Sciences, Vol. 4, pp. 321-328, 2012. [WEI86] Wei Zhongzhe and Yang Zheba, The macro control model for the teachers of university, Applications of System Engineering, 1, pp. 32-39, 1986. [WEYGANDT10] Weygandt ...
    ... Systems), 2, pp. 1-10, 1985. [DENG86] J. Deng, The application of Grey System to quantitative investment strategy, Investment and reform, 3, pp. 21-5, 1986. [DENG89] J. Deng, Introduction to Grey system theory, The journal of Grey system 1, pp.1-24. 1989. (proveriti strane) [DULANOVIĆ09] Ţivko Dulanović ...