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Упит dcterms_subject_txt:Policy and Law,Nature and Landscape Conservation

2338 items

  • 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

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... the nature of the content of the resource, such as"best practice", "case study", "exercise", "guidelines", "lesson", "module", "monitoring"and "evaluation techniques", "policy brief", "portal", "promotional material", or "reference material". The Lifecycle category describes the history and current ...
    ... practice and the like. As these resources need to bediscoverable, accessible and shared by potential learners across the learning environment, it is very important that they are well described and tagged in a standard way in machine readable form by metadata. Only then can they be successfullyused and reused ...
    ... (UNIKG), University of Niš (UNI) from Serbia, University of Banja Luka (UBL) and University of Tuzla (UNTZ) from Bosnia and Herzegovina and University Mediterranean (UNIM) from Montenegro. All of them develop and publish their OER independently using edX, an open-source online learning platform ...

  • 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
    ... n of many factors, some of which are measurable and belong to the class of deterministic (static) loads, 11 while the majority of dynamic loads are stochastic in nature and often cannot be precisely quantified. This results in irregular and unpredictable load function shapes, affecting the ...
    ... for applications involving liquids and gases, such as in water management systems and industrial processes. 34 ' ··o Serija Q45U Serija 518 RUC30/100/300/600 M2SU Figure5.5 Ultrasonic sensors 3.Electromagnetic sensors- These sensors use Faraday's law of electromagnetic induction to measure ...
    ... Testing and Refining - Finally, we would test our program and iterate through steps 1 and 2, refining the rules and algorithms until we achieve satisfactory results. 17 This approach can be time-consuming and requires a lot of manual effort, as rules need to be constantly updated and adjusted ...

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... be used as a guide in prospecting Cu-skarn deposits (Somarin 2004)? Use of the rare earth elements (REE) in studies of the nature and effects of hydrothermal alterations and hydrothermal sys- tems is a relatively new method as the REE were commonly regarded as insensitive to all, except to the hy ...
    ... Mining and Geology. Conditions for microanalysis were spot size 2 µm, an accele- rating voltage of 30 kV and a beam current of 10 nA, using natural and synthetic mineral standards including albite (Al, Si), wollastonite (Ca), titanium monoxide (Ti), chromium oxide (Cr), and manganese (Mn) and iron ...
    ... grossu- lar, almandine and spessartine components. REE and trace elements The REE patterns of the studied skarn garnets are norma- lized to the chondrite value of McDonough & Sun (1995) and shown in Fig. 5. Y being a pseudolanthanide was included and plotted between Dy and Ho. Different zones during ...

  • The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments

    Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)
    The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...
    sediments, Tisza River, organic matter, biomarkers, oil pollutants
    ... of CH2Cl2 and CH3OH and quantified. The bitumen extracts and crude oils were separated into saturated, aromatic and NSO fractions using column chromatography over silica gel. The saturated hydrocarbon fraction was eluted with n-hexane, aromatic hydrocarbons with mixture of n-hexane and dichloro- ...
    ... designate the 14α(H)17α(H) and 14β(H)17β(H) con- figurations in the steranes; αβ and βα designate the 13α(H)17β(H) and 13β(H)17α(H) configurations in the diasteranes; (S) and (R) designate con- figuration at C20 in both the steranes and diasteranes. _______________________________________________ ...
    ... compositions of terpanes and steranes and the values of the biomarker parameters in Tisza sediments, it is supposed that the oil pollution generally could be related to heavy fuel oil from tankers, due to intense river transport and, to lower extent, to crude oils from the Elemir and Rusanda oil fields ...

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik

  • Optimizacija vodosnabdevanja podzemnim vodama u Srbiji

    Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)
    ... odredivanju povrsinskih i podzemnih vodnih tela, Sluzbeni glasnik RS 96/10) Figure 1. Map with drawn groundwater bodies in Serbia (The Law on the determination of surface and groundwater bodies, Official Bulletin RS 96/10) Za pravilno upravijanje vodnim telima, neophodno je kontinuirano sprovodenje monitoringa ...
    ... J CS B., TÖRÖK J., MI HAJDIN B. AND PAPIC P., 2011 – (eds. Ganoulis J., Aureli A. and Fried J.). Wiley- - , 2010: , UN ECE, 2007. Our waters: joining hands across borders-First Assessment of Transboundary Rivers, Lakes and Groundwaters, UN ECE, Dugan Poloméié, Zoran ...
    ... distributed throughout the territory of the Republic. The main groundwater reserves are accumulated in thick Quaternary and Neogene water-bearing deposits of intergranular porosity and in mountain ranges built up of karstified carbonate rocks. Serbian groundwater has not yet been thoroughly investigated ...

  • 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

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... BOOKHAGEN, B., BONNET, S., BLYTHE, A. AND DUNCAN, C., 2006: Climatic forcing of erosion, landscape and tectonics in the Bhutan Himalayas. Geology, 34, 801–804. doi: 10.1130/G22648.1. GRUJIC, D., 2006: Channel flow and continental collision tectonics: an overview. In: LAW, R. D., SEARLE, M. P. & GODIN, ...
    ... importance and conservation. Protection of nature, 55/1-2: 29–35, Beograd. (in Serbian, English summary) STEFANOVIĆ I., MIJOVIĆ D., 2004: The Middle Miocene fossil site Prebreza in southern Serbia. In: Podemski M. (ed.), Proceedings of The Conference “Geo- logical Heritage Concept, Conserevation and Protection ...
    ... Serbian oil sector: A new energy policy regulatory framework and development strategies. Energy policy, Vol. 51, pp. 312–322. KAROVIC MARICIC V., DANILOVIC D., BATALOVIC, V., LEKOVIC, B., 2012: Exploration, production pace faster in Serbia, Bosnia and Herzegovina. Oil and gas journal, Vol. 110, No 1a ...

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... growing [12] and today has more than 22 thousand synsets linked to the Princeton Word- Net 3.0 through ILI. During the development of the SWN, special attention was given to certain conceptual domains — emotions — and scientific domains — biological species, biomedicine, nutrition, religion, law, linguistics ...
    ... of geologic data, and provide a modern and effective in- formation basis for carrying out all activities related to planning, design and decision-making in the field of geology. Within the project a web portal3 was established that allows quick and easy access to geological data and information in the ...
    ... usually refers to names of persons, locations and organizations, and numeric expressions including, time, date, money and percentage. Recently other major types are being included, like “products” and “events”, but also marginal ones, like “e-mail addresses” and “book titles”. The NE hierarchy in our Named ...

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

    Vesna Cvetkov (2020)
    ... и природне науке (ур. Д. Срејовић), Београд: 115-123. Maher, B. A., Taylor, R. M. 1988. For- mation of ultrafine-grained magnetite in soils. Nature 336: 368-371. Mikić, M., Stojanović, V., Mrđić, N. 2006. Primena gradiometra za potrebe zaštitnih arheoloških istraživanja na Viminacijumu-lokalitet ...
    ... 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 ...

  • 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
    ... the Western and Eastern Carpathians during Paleogene-Miocene times. The nature of the subducted slab is still debated and could have had oceanic or highly extended continental character (e.g., Bokelmann and Rodler, 2014; Necea et al., 2021). The N-, NE- and E-ward Miocene roll-back and closure of ...
    ... South Carpathian orogen: constraints from 40Ar/ 39Ar ages. Tectonophysics 290, 111–135. Davy, P., Cobbold, P.R., 1988. Indentation tectonics in nature and experiment, 1. Experiments scaled for gravity. Bull. Geol. Inst. Univ. Uppsala, N.S. 14, 129–141. de Bruijn, H., Marković, Z., Wessels, W., ...
    ... orientations of faults and fault zones, foliations within fault gouge and cataclasite, faulting-related cleavage and observations of tilting and rotations. Slickenside kinematic indicators (including calcite slickenfibres, grooves and other brittle indicators), Riedel shears and brittle shear bands ...

  • Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine

    Lazar M. Kaluđerović (2018-01-17)
    fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...
    adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon
    ... Journal of Agricultural and Food Chemistry, 48 (7): 3018–3026. Senesi N., Miano T. M., Testini C. 1987a. Incorporation of water dissolved chlorophenoxyalkanoic herbicides by humic acids of various origin and nature. In: Giovannozzi-Sermanni G. and Nannipieri P. (Eds.), Current Perspectives in En ...
    ... 295–308. Senesi N., Testini C., Miano T. M. 1987b. Interaction mechanisms between humic acids of different origin and nature and electron donor herbicides: a comparative IR and ESR study. Organic Geochemistry, 11: 25–30. Senesi N. 1992. Binding mechanisms of pesticides to soil humic substances ...
    ... mineralisation of S-metolachlor in soils from fields cultivated with different conservation tillage systems. Soil and Tillage Research, 128: 97–103. Allaway W. H. 1949. Differential thermal analysis of clays treated with organic cations as an aid in the study of soil colloids. Soil Science Society ...

  • Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)

    Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... be entered into the digital database, to track their evolution, i.e. possible changes of meaning over time; • the progressive and recursive nature of the observation and interpretation process has a hier- archical, namely, family tree structure; from the initial generalization to gradual distinguishing ...
    ... clearly and unequivocally determined, namely, defined and that only then it can have a commu- nications role; • analytical requirements of comparison, correlation, grouping and searching geologic similarities and differences, details and unique features of rock material, geological units and structures ...
    ... Terminol- ogy and Nomenclature for the Geologic Database of Serbia carried out by the Faculty of mining and geology, University of Belgrade, funded by the ministry of the environment and Spatial Planning of the republic of Serbia. A short history of geolISSTerm and an overview of the structure and the way ...

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... in addition to the ash-water. Its amount is relatively small (below 10 %) and varies depending on several factors: the nature of the fly ash, the type of additive (hydrated lime or cement), the percentage of the additive and partly of the time of exposure. Fig. 7 presents the trend of calcite formed ...
    ... with the lime content and the control sample is calculated and is 0,966, and with the cement content and the control sample is 0,954. After the calculated coefficient values it is found that the samples with the lime and the cement belong to the very strong correlation group and differ by 1 %. ...
    ... that contain the cement and the lime as the binder (of 2, 4 and 6 %) and with the control sample (100 % of the ash). The linear dependence was made for all variants, and after that the correlation coefficient was calculated. The correlation coefficient is characterized and classified in the specific ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori