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Упит dcterms_subject_txt:early Toarcian Anoxic Event

137 items

  • 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
    ... 10 7 Future Work For the upcoming research, we plan to apply the procedure we used for personal names to other NE classes (organization, location, event, tempo- ral, quantitative, etc) and to experiment with other ML NER methods and tools with an ultimate goal to produce a successful hybrid system. The ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... metamor- phic and/or silicified/dolomitized sediments. They are overlain by Jurassic ophiolitic mélange and obducted ophiolites. After an erosional event, a Cretaceous sedi- mentation cycle started at various times, depending on the location. This produced Aptian flysch and younger (clastic, carbonate ...
    ... metamor- phic and/or silicified/dolomitized sediments. They are overlain by Jurassic ophiolitic mélange and obducted ophiolites. After an erosional event, a Cretaceous sedi- mentation cycle started at various times, depending on the location. This produced Aptian flysch and younger (clastic, carbonate ...
    ... sensu Schmid et al. (2008). Only a single locality (Cretaceous limestone at locality No. 8, see Fig. 2) is located in the East Vardar unit. The early geological and tectonic history of the Vardar zone is not of direct interest for the interpretation of our results, therefore only a few important ...

  • Named Entity Recognition for Distant Reading in ELTeC

    Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)
    Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.
    ... Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković | CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France | 2020 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005135 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава ...

  • 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
    ... particular event. The time of the beginning of the amplitude and phase delay perturbations, the respective onset time to maximum perturbation, and the recovery time to unperturbed signal level have been determined. Detected VLF perturbations have been classified, according to literature, into early events ...
    ... ije elekrona u sredini gde su se dogodile TLE pojave, u koje spadaju: a) rani/brzi (eng. early/fast), b) rani/spori (eng. early/slow) i c) rani poremećaji dugog oporavka, LORE (eng. LOng Recovery Early VLF events) i 2) poremećaji na trasi VLF signala koji nastaju mehanizmom opisanim u odeljku ...
    ... 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 with 1 ns ...

  • 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
    ... цртежa, графичког дизаjна, планова и карата); – веб стране (Website), HTML странице и повезане слике, аудио и видео датотеке, итд.; – догађаjи (Event), временски ограничене поjаве, на пример: изложба, веб конференциjа, радионица, пожар, битка, суђење); – електронска пошта (Email), текстуалне поруке ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • 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

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • 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
    ... reactivated the late Early Cretaceous thrusts and was followed likely by renewed thrusting in the West Balkans unit (Burchfiel and Nakov, 2015; Schmid et al., 2020; Vangelov et al., 2013). The orogen-parallel extension was followed by the formation of late Oligo- cene – early middle Miocene high offset ...
    ... sets of dextral strike-slip faults) mutu- ally truncate each other in outcrops. In such cases, we associate these structures to the same tectonic event. The post-Cretaceous kinematics observed in multiple outcrops along strike of the major faults is assigned to its specific expression at map scale ...
    ... offsets observed in the field with the one at the map scale. We present the mapped fault-slip data as being the result of a single large tectonic event because the observed cross- cutting relationships of reported structures with significantly different kinematics (normal, strike-slip and reverse ...

  • 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.

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... chooses the name and location. Content is copied from the temporary file created in the previous step, and it represents the final database. In the event that the user has already processed some files, he also has Dopuni postojeću bazu (Update existing base) available (Figure 10). It allows the data ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... CKH from June 1 to 7, 2021, with three separate events: a. CEKA 2021, from June 1 to 4, 2021, which took place on the Zoom platform (more on this event can be found in Chapter dedicated to this course). b. A special thematic session “Lecturing . by Distinguished Guests' took place on June 5, 2021 ...
    ... Research, Ragusa, and the Mupnicipality of Custonaci, Sicily, Italy. CKH was among the other organizations that supported and participated in this event. 15 CKH Multidisciplinarna konferencija „KARST 2022: Značaj, stanje tehnike i perspektiva korišćenja i zaštite resursa u karstu” Multidisciplinarna ...
    ... Utilisation and Protection of Resources in Karst' was dedicated to IYCK UIS as well and it was held October 21 to 22, 2022. The organizers of the event were the Serbian Academy of Sciences and Arts (SASA) - Board for Karst and Speleology, the Centre for Karst Hydrogeology of the Faculty of Mining ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... model of one of these classes — the Simulation-Fire class. This class includes specific procedures based on the mathematical model of airflow in the event of fire incidence in complex mine ventilation networks. Data services procure data maintenance, data access and modification functions. The database ...

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... represent a siliciclastic cycle of sedimentation with a trend of deepening of the facies beginning with Early Or- dovician coastal/shallow marine siliciclastics which pass into deep basinal Silurian to Early Devonian fine-grained graptolite schists (KRSTIĆ & MASLAREVIĆ, 1990). The Devonian (Late Lochkovian ...
    ... exploration of continental margins.– Sedimentology, 56, 267–318. doi: 10.1111/j.1365-3091.2008.01019.x ORR, P. (1994): Trace fossil tiering within event beds and preservation of frozen profiles: An example from the Lower Carboniferous of Menorca.– Palaios, 9/2, 202–210. doi: 10.2307/3515106 ORR, P ...
    ... www.geologia-croatica.hr Journal of the Croatian Geological Survey and the Croatian Geological Society 1. INTRODUCTION The Middle Devonian to Early Carboniferous turbiditic siliciclas- tic succession of the central part of the Carpatho-Balkanides of Serbia is classically interpreted as the K ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... the recording of oscillation velocity of the ground intended for blasting No. I—measuring point No. 3 at PK Nepri¢ava. linstrument S/N 122 Client: Event number 106 - Operation: Miniranje | Date & time Tue 23 May 2006 11:53:26 Location: PK "Nepricava" Reg Length 38/1 kHz Operator: (Vector max (ch 1-3) ...

  • ‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions

    Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban (2020)
    Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...
    Firing, Glaze, Traditional ceramics, Provenance studies, Augite

  • Хидротермалне промене у издвојеним стратиграфским јединицама у бушотини јужно од Бора

    Павле Јовичић (2024)
    Анализом уступљених узорака из истражне бушотине јужно од Бора, од стране компаније Serbia Zijin Mining, утврђене су хидротермалне промене (алтерације) које прате стратиграфске чланове набушене самом бушотином. Установљене алтерације директно осликавају класично развиће порфирског Cu система, при чему је указано на њихову повезаност са минерализацијом, као и на потенцијалност самог истражног простора којем изабрана бушотина припада.
    Бор, хидротермалне промене, порфир

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... underground chambers. The conducted analysis was twofold – in the first part of the research, time series of strong ground motion during the seismic event are analyzed, while in the second part, the stability analysis of phenomenological Burridge-Knopoff spring-block model is conducted. For this purpose ...
    ... fault. It is necessary to emphasize that the apparent incompatibility between the stochastic nature of the strong ground motion during the seismic event and its model of nucleation could be explained by the fact the both the process of nucleation and propagation of seismic waves represent dissipative ...
    ... accurate analysis of obtained data and the behavior of the suggested phenomenological models, on the other side. KEYWORDS: seismic event, stress, underground chambers, bifurcations, time series, deterministic chaos, stochasticity, perturbations, time delay, frictional strength ...

  • Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе

    Ana S. Mladenović (2015-06-19)
    Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...
    Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји
    ... igneous processes on the Kopaonik Mts., two tectono-magmatic events have been determined. The Late Eocene – Early Miocene (correspond to the first three brittle phases) tectono-magmatic event was generally characterized by transpressional tectonics that provided conditions for formation of basaltic ...
    ... of this event, these magmas could not reach the upper crustal levels. Later on, limited extensional pulses that occurred before the end of this event opened pathways for newly formed mantle melts to reach shallower crustal levels and mix with the evolving I-type magmas. The second event is Middle ...
    ... basaltic melts to mid-crustal levels. This, in turn, induced the elevation of geotherms, melting of shallow crust and S-type granite formation. This event terminated with transpression that produced small volumes of basaltic melts which products can be traced on the southern slopes of the Kopaonik ...