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Упит dcterms_subject_txt:gravity survey

237 items

  • Геомагнетни премер на секуларној станици KELE-1001 (Келебија) у мају 2018. године

    Панта Андрејић (2024)
    У овом раду је приказана методологија геомагнетног премера на секуларној станици Келебија. Мерења су изведена у периоду од 08. до 12. маја 2018. године и састојала су се од регистрације дневних варијација, мерења апсолутних вредности угловних елемената и компонената вектора геомагнетог поља и одређивања астрономског севера. Овај вид мерења се често назива магнето-варијациона мерења и саставни су део државног геомагнетог премера за праћење и проучавање геомагнетног поља у систему простор-време.У оквиру обраде података израчунате су апсолутне и базне вредности ...
    секуларна станица, регистрација варијација, апсолутна и базна мерења
    ... godini; 15.KONGRES GEOLOGA SRBIJE, BEOGRAD, Maj, 2010, Zbornik radova, str.433-438., 2010. Wienert K.A.; 1970; Notes on Geomagnetic Observatory and Survey Practice; Publication UNESCO, Brussels. . FLUXGATE MAGNETOMETER, ModelFGEversionG, DMI, TEHNICALREPORT · 96-4, Manual (Revision19/2, 2001), DMI- ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... or have not reached full maturity, it is safe to say that the current level of achievement is not negligible. According to the META- NET extensive survey performed in [20], some important lexical resources for Serbian were developed (corpora and e-dictionaries), as well as applications for basic language ...
    ... D.: Hybrid sentiment analysis framework for a morphologically rich language. J. Intell. Inf. Syst. 1–22, to appear 19. Nadeau, D., Sekine, S.: A survey of named entity recognition and classification. In: Sekine, S., Ranchhod, E. (eds.) Named Entities: Recognition, Classification and Use, pp. 3–28. ...

  • Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela

    Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)
    ... countries, considering that all of almost one million of inhabitants use them for drinking purpose. The results of the conducted hydrogeological survey, measurements and modelling show insignificant depletion of the groundwater table, without expansion tendency for the forecasted period of the next ...
    ... two countries, considering that all of almost one million of inhabitants use them for drinking purpose. The results of the conducted hydrogeological survey, measurements and modelling show insignificant depletion of the groundwater table, without expansion tendency for the forecasted period of the next ...

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... Preparation of Questionnaires, Statistical Processing and Fuzzification of Expert Opinions For each of the machines, it was necessary to conduct an expert survey with a certain number of employees working on the machines under consideration. The questions asked included a multiple evaluation option in relation ...
    ... indicators (phenomena) R, M, and S. That is, the respondents could assign 100% membership to one assessment and allocate them to multiple grades. The survey covered four respondents in the open-pit mine in the “Kolubara” Mining Basin whose estimates are shown in Tables 4 and 5. Table 4 shows the assigned ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije

    Jana S. Stojković (2013-09-25)
    Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...
    esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije
    ... ns of the United States Geological Survey, U.S. Geological Survey, Pp. 1-510. Jana S. Stojković Doktorska disertacija 194 48. Hem, J. D. (1992) Study and interpretation of the chemical characteristics of natural water. 3rd. U.S. Geologycal Survey. 49. Hinman, N. W. (1999) “Silicon, ...
    ... 68. McGee, K. A., Doukas, M. P., Kessler, R. and Gerlach, T. M. (1997) “U.S. Geological Survey Open-File Report 97-262.” Impacts of Volcanic Gases on Climate, the Environment, and People. U.S. Geological Survey. http://pubs.usgs.gov/openfile/of97-262/of97-262.html. 69. Mittlefehldt, D. W. (1999) ...
    ... Prilikom preliminarne obrade hidrohemijskih podataka korišćeni su softveri AquaChem 5.1 (Schlumberger Water Services) i PHREEQC 2.18 (U.S. Geological Survey). Rezultat opisane sistematizacije jeste skup hidrohemijskih podataka sačinjen od 14 parametara hemijskog sastava merenih na 110 uzoraka mineralnih ...

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... – errn. Heavy rare earth elements . DIUPAC]| – eprrn. Infernational Union of Pure and Applied Chemistry [USGS] – egrn. Unites States Geological Survey .· [HHS] – epHrm. Hydrophobichydrophilic separator · [RO] – eHrn. Reverse osmosis .· [NF] – egrn. Nanofiltration . [ELM] – eprm. Emulsification ...
    ... recovery from coal fly ashes. Metals, 11(1), p.142. 17 IIpeMa I eoJIOHmIKOM 3aBOJy CjeyHbeHHx AMepHukKux /pjKaBa (eHrn. Umifes States Geological Survey — [USGS] (p. D011S009R002), cBerckH pe3epBe cy JOOBOJBHC 30 3A4JOBOJbeMbC Hpec/iBHDeHe HOTpajKMKbc, aJIH CBCTCKa HpOM3BOJUba HcC 3aJlOBOJbaBa TpeHyTHy ...
    ... consumption in Australia. Current Research in Environmental Sustainability, 4, p.100157. [117] Eklund, E., 2015. Mining in Australia: An historical survey of industry-community relationships. 7he Extractive Industries and Society, 2(1), p.177-188. [118] Vestergaard, C., 2015. Governing uranium in ...

  • 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 ...
    ... Vossen, P. (eds.) Proceedings of the Seventh Global Wordnet Conference, GWC 2014. pp. 55–62. Tartu, Estonia (2014) 13. Nadeau, D., Sekine, S.: A Survey of Named Entity Recognition and Classification. In: Sekine, S., Ranchhod, E. (eds.) Named Entities: Recognition, Classification and Use, pp. 3–28. ...

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... Serpentine-Group Minerals - Studies of the natural phases in the system MgO-SiO2-H2O and the systems containing the congeners of magnesium. Geological Survey professional paper, 384-A, pp. 99. United States Government Printing office, Washington. FILIPOVIć, I., MARKOVIĆ, B., PAVLOVIĆ, Z., RODIN, V., MARKOVIĆ ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

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

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... Renewable and Sustainable Energy Reviews, 2017, Volume 68, 2017, pp. 1020–1032 2. Golušin, M., Munitlak-Ivanović, O., Andrejević, A., Vučenov, S., Survey of socio economic growth in SE Europe – new conceptual frame for sustainability metrics, J Econ. Surv, 2014, Volume 28, pp. 152–168 3. Umbach ...

  • Projekcija razvoja osmatračke mreže podzemnih voda u Republici Srbiji

    Petar Dokmanović, Zoran Stevanović, Saša Milanović, Bojan Hajdin, Vesna Ristić-Vakanjac, Veljko Marinović (2016)
    ... for Hydrogeology Summary Project of developing of groundwater (GW) monitoring network is made during 2015, for Republic Hydro- Meteorological Survey of Serbia (RHMS), with respect of the following requests: 1/Accordance with relevant national and EU legislations 2/Inclusion of: a)the existing ...

  • Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support

    Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović (2017)

  • Some examples of interactions between certain rare earth elements and soil

    Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski (2021)
    Freundlich adsorption isotherm, sequential extraction, metallic ions, ICP-OES
    ... residue management in the production of rare earths from thorium containing minerals, Safety Reports Series 68 (2011) 259 13. G. Haxel, US Geological Survey 87 (2002) (https://pubs.usgs.gov/fs/2002/fs087-02) 14. C. Ng, J. N. Losso, W. E. Marshall, R. M. Rao, Bioresource technology 85 (2002) 131 (https://doi ...

  • 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
    ... ac.rs 2019 | 72/1 | 51–79 | 6 Figs. | 8 Tabs. | Suppl. Tabs. 7 | Suppl. Figs. 2 | www.geologia-croatica.hr Journal of the Croatian Geological Survey and the Croatian Geological Society 1. INTRODUCTION Lignites of Upper Miocene age are the most important energy source in Serbia. Almost all lignite ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... transducteurs autour de la reconnaissance des en- tités nommées. Traitement automatique des langues 52(1):69–96. David Nadeau and Satoshi Sekine. 2007. A Survey of Named Entity Recognition and Classification. Lingvisticae Investigationes 30(1):3–26. E.F. Tjong Kim Sang. 2002. Introduction to the CoNLL-2002 ...

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... Repository is available at: www.dr.rgf.bg.ac.rs 2019 | 72/2 | 109–128 | 21 Figs. | www.geologia-croatica.hr Journal of the Croatian Geological Survey and the Croatian Geological Society 1. INTRODUCTION Since the early pioneering work of e.g. ROYDEN et al. (1983) and HORVÁTH (1984), the following ...
    ... fauna of Rako- vica – in Serbian].– Ann. Geol. Pennins. Balk., 2, 9–60. PAVLOVIĆ, P.S. (1893): Prinove Geološkog zavoda [Noveltis from Geological Survey – in Serbian].– Ann. Geol. Pennins. Balk., 5/1, 212–223. PAVLOVIĆ, P. (1931): Prilozi poznavanju tercijara u Srbiji (Pontiska fauna iz obala potoka ...

  • Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics

    Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić (2024)
    Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...
    Lecki vulkanski kompleks, andeyit, kalcedon, kvarc, opal-CT, mikrostruktura, organska materija