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Упит dcterms_subject_txt:hammer with spikes

1040 items

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... examples was unbalanced, with twice as many DSS examples as DNS examples, we have randomly extracted 44,808 (out of 89,096) examples with standard lexis from the DSS dataset and labelled them as ‘OK’ (positive class) and the same number of examples (44,808) from the DNS set with non-standard lexis (labelled ...
    ... After removing irrelevant features (those that have a very low correlation with label, like avg_word_len, or those that are highly correlated with each other, such as max_word_len and max_token_len), we represented each sample with the shorter feature vector (Figure 7). Figure 7: Pearson correlation ...
    ... solution, with the primary goal to speed up the linear production process of the dictionary. This enabled the use of the lexical database for research purposes. After successful import of two volumes: the 1st and 19th into the database (Stanković et al., 2018), the process continued with another three ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... to 5 times and 1.9% with more than 5 occurrences. The graph 3 (N2X) extracted 31% of all MWUs with frequency greater than 1. It is fol- lowed by graph 6 (NXN) with 26% MWUs, graph 4 (N4X) with 22%, graph 1 (AXN) with 16%, and the remaining six graphs with 6%. As to MWUs with frequency greater than ...
    ... terms and integrating them with other resources for linguistic text pro- cessing; 2.5 Repeated linguistic preprocessing with ex- panded dictionaries for verification of recognition of new lemmas. 3. MWUs extraction 3.1. Application of syntactic graphs to extract MWUs with different syntactic structures ...
    ... Selection of terms from new MWUs 4.1. Frequency calculation for all forms of MWUs and their basic forms with ranking of results; 4.2. Removing MWUs already in e- dictionaries and those with rank under the specified threshold; 4.3. Linguistic evaluation of grammatical cor- rectness of remaining ...

  • 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
    ... Bedded and lenticular, with constant thickness and uniform composition, not divided into smaller blocks by post-tec- tonic and with reserves greater than 1,500,000 tonnes 100 200 400 2 Bedded and lenticular, with constant thickness and uniform composition, with reserves greater than 1 ...
    ... 100 200 Bedded and lenticular, with variable thickness and nonhomogeneous composi- tion, with reserves greater than 1,500,000 tonnes Bedded and lenticular, with reserves be- tween 500,000 and 1,500,000 tonnes 3 Bedded, lenticular and irregular in shape, with vari-able thickness and nonhomoge- ...
    ... compositions which, together with the content of iron and organic substances, define their mode of utilisation. Refractory clays with high kaolinite content originate from weathering of granitic and dacite-andesitic rocks. Typical ceramic (non-refractory) clays, made of kaolinite with considerable amounts ...

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... analyses were provided complete identification with a high score value for the best match. All tested bacteria belong to genera Bacillus, which were previously reported as spore-formatting species with a high surviving level in alkaline environments and with the capability to do the MICP effectively [30] ...
    ... microbial culture [7], while Achal et al. [8] performed a phenotype modification of Sporosarcina pasteurii with UV radiation, which resulted in the alkaline resis- tant mutant at pH values above 11, with pronounced ureolytic activity and biocalcification in sand consolidation treatment. The wide range of ...
    ... Urea-CaCl2 media; Urea was replaced with 4.0 g/L yeast extract). Overnight bacterial suspension aliquots (0.3 mL) were transferred into previously mentioned liquid media, adequate dilutions were made, and enumeration of bacteria was performed by streaking on TSA with the addition of 20% Urea. After an ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... The organizations started with translating selected courses into: Russian, Portuguese, Turkish, Japanese, Ukrainian, Kazakh, and Arabic, as the most popular languages for Coursera students. General approach is that each Coursera Global Translation Partner starts with translation od 3-5 selected ...
    ... welcomes at the moment 145 partners across 28 countries offering over 2,000 courses. By joining forces with top organizations globally to produce fully translated course lectures, Coursera with translation partners is producing high-quality education accessible to anyone, anywhere – regardless of ...
    ... translation memory files. With an iterative and agile approach to translation it is possible to adapt as problems arise or courses are changed during translation. Proper planning is essential. General guidelines and workflow for eLearning course translation should start with an initial representative ...

  • Part of Speech Tagging for Serbian language using Natural Language Toolkit

    Ranka Stanković, Boro Milovanović (2020)
    Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...
    obrada prirodnog jezika, mašinsko učenje, neuronske mreže
    ... Best performance in this research is achieved with the Perceptron tagger, a neural network which is more than a decade old. Since then, a breakthrough with deep learning has happened, so there’s a strong belief that further improvements can be made with the latest neural network models [24]. However ...
    ... using NLTK tagging API. The best models are transformed with the Brill tagger to improve the accuracy. We trained the models on the tagged dataset counting 180,000 tokens. The best results on the test set of 20,000 tokens were demonstrated with the Perceptron tagger: 92,52 – 95,76% accuracy for ...
    ... are ready, the process of tagging is made simple with the help of NLTK. There are a plenty of tagger models packaged in NLTK that can be trained. Every tagger has an evaluation procedure that strips down the tags from the given text, tags the text with the newly created tagger and reports the accuracy ...

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... individ- ual features, each of which associates a name with one or more values, was mapped with the help of the aforementioned abbreviations used in the dictionary. The existing 371 abbreviations (markers) were mapped as data category values with 30 data categories, and further grouped in data-category ...
    ... the pattern recognition, and the alignment of the recognized markers with the predefi ned categories, as described in the previous section. The dictionary article units that were recognized were marked with XML tags, in accordance with the predefi ned scheme and imported into the relational database ...
    ... structured data stored in relational lexical database. This approach is compatible with several standard structured forms and ontologies (TEI, LMF, Ontolex, LexInfo). A lexical database mod- el was designed in compliance with these structured forms, following mostly the lemon model. Mapping of the lexical ...

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... structure composed of three layers, starting, with the top ~2 monolayers of FeOOH, followed by FexAsyO and Fei-x„.,AsnyS [23], which does not coincide with our observations. A longer oxidation of 25 days resulted in the formation of a thicker layer, starting, with 9 nm of oxygen and As-rich zone low in ...
    ... oxide structure with additional thin amorphous Fe-hydroxide on top. It is worth mentioning that such an oxidation structure Was not observed on the samples directly transferred from the vacuum chamber to the TEM, with air exposure <5 min. Figure 6. (a) Edge of arsenopyrite grain with marked regions ...
    ... for FFT patterns (I-III) and magnified (b) HR-TEM micrograph of the surface layer with corresponding, FFT power spectra. (c) Overview TEM micrograph with corresponding, FFT pattern, and (d) magnified detail with marked apparent 3.5 A x 5 A superlattice. (e) SAED pattern recorded over the same region ...

  • Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)

    Howard R. Feldman, Barbara V. Radulović, Fayez Ahmad (2023)
    Brachiopods, Middle Jurassic, Sphriganaria, shell microstructure, Ethiopian Province

  • 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

  • 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

  • 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
    ... ng For this analysis, around 2 mg of the unprocessed substance was heated to 330 ◦C, with a heating rate of 20 ◦C/min, then cooled to 25 ◦C with a cooling rate of 40 ◦C/min and finally heated again to 330 ◦C with a heating rate of 10 ◦C/min. The measurements were conducted under nitrogen flow (50 mL/min) ...
    ... animal room, the light/dark period was set on 12 h cycles (light on at 6:00 a.m) with the illumination 120 lx. The temperature was set at 22 ± 1 ◦C, with the relative humidity 40%–70%. The research was conducted in accordance with the National Institutes of Health Animal Care and Use Committee guidelines. ...
    ... later in the product lifecycle [11]. Deuterated pyrazoloquinolinones are investigated as non-benzodiazepine ligands to interact with α6β2/3γ2 subunit of GABAA receptors with improved metabolic stability to retard O-demethylation. Deuteration of both C4′ and C7′ methoxy groups in the parent molecule resulted ...

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... thinner nanoflake particles were formed with an average diameter of ~70 nm for the sample annealed at 500 "C for 2 h. A similar procedure was conducted by Abdullah et al. [29] with the same surfac- tant: after annealing; at 500 ?C for 4 h, the nanoflakes with thicknesses close to 65–80 nm were obtained ...
    ... (left) with corresponding, EDS spectra (right) of V»Os catalyst. 2.3. Raman Scattering Measurements The Raman scattering, measurements taken on the catalyst sample have confirmed the results of XRPD regarding orthorhombic o-V>Os structure with Pnnm symmetry. This structure is associated with 21 Raman ...
    ... the air using Jobin-Yvon T64000 triple spectrometer (with 1800 grooves mm-! grating)) equipped with a confocal microscope and a nitrogen-cooled chargje-coupled device detector. The spectra were excited by a 514.5 nm line of Ar*/Kr? ion laser with an output power of less than 10 mW. The UV-vis diffuse ...

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... 7 different named enti- ty types, with a Convolutional Neural Ne- twork (CNN) architecture, having F1 score of ≈91% on the test dataset. This model has been further assessed on a separate eva- luation dataset. We wrap up with compa- rison of the developed model with the exi- sting one, followed by a ...
    ... tization with NER into TEI ELTeC level 2 schema15 is an ongoing activity, where a pipe- line starts with SrpNER annotation, followed by POS-tagging and lemmatization by a Tree- Tagger (Schmid, 1999; Stanković et al., 2020). As a result, first 16 novels from SrpELTeC col- lection were annotated with POS, ...
    ... SrpELTeC-eval, with the findings and a thorough discussion given in Section 5. Finally, conclusions and plans for the future work were stated in Section 6. 2 Related Work The existence of large-scale lexical resources for Serbian, e-dictionaries in particular (Kr- stev, 2008), coupled with local grammars ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... Integration of BMP portal for indexing and edX portal with contents is implemented with Open edX Platform REST APIs (https://open.edx.org/open-edx-rest-apis). It allows building of web, desktop, and mobile applications that work with local Open edX instances, use Representational State Transfer ...
    ... Faculty of Mining and Geology, bojan.zlatic@rgf.bg.ac.rs Abstract: This paper outlines the approach to tagging of OER content with metadata within the BAEKTEL project with the aim of increasing the discoverability of OER materials by potential users. The approach is based on the Learning Resource ...
    ... examples by enterprise experts. The resources can be published in different languages, with support for their translation [6]. The ICT solution for BAEKTEL OER framework comprises a central repository with OER resources and the BAEKTEL Metadata Portal (BMP). All project partners develop and ...

  • First paleomagnetic and magnetic anisotropy results from Montenegrо - the coastal area

    Emö Márton, Vesna Cvetkov, Martin Đaković, Vesna Lesić, Slobodan Radusinović (2021)
    ... paleomagnetic directions, whichare aligned with the intermediate AMS direction. The positive tilt test, however, provides an overallmean direction with absurdly shallow inclinations, which suggest that we are not dealing with“real” paleomagnetic directions, but maybe with magnetic anisotropy governed NRMs.The ...
    ... resulted in moderately strong fabrics with NW-SE oriented AMS lineations, perfectly following the Dinaridic trend recognized in Croatia. Onelocality, the only one with moderate tilt and rather poor statistical characteristics suggestpost–Eocene CCW, while those with steep dips have well-defined paleomagnetic ...
    ... ninelocalities from the Dalmatian, six from the Budva and five from the High Karst zone, respectively.The harder rocks were drilled with portable gasoline powered, the softer ones with an electric drill.The laboratory measurements, demagnetizations, statistical evaluations of the measurementswere carried out ...

  • Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen

    Nemanja Krstekanić, Liviu Matenco, Ernst Willingshofer, Marinko Toljić, Uroš Stojadinović (2021)

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... instance, three senses of jezik), and link a lexical entry with an ontology by connecting the set of markers denoting one sense with individual markers in the SenseProperties table.4 SenseRelation provides for connecting various senses with others that are narrower, broader, synonymous and so on, ...
    ... generate its variation with suffix -irati and an inverse marker – VAR=IratiArisati (e.g. komentirati). This rule is in a group with five other rules: VAR=ArisatiIrati N N that generates a noun variation, VAR=ArisatiIrati A A that gen- erates an adjective variation and three others with inverse markers ...
    ... additional improvements – automatic generation of dictionary candidates, with their lexical and derivation variants. This automatic procedure enabled migration of all 26 simple word and 15 multi-word unit Serbian dictionary files with more than 150,000 lexical entries. Keywords: lexical database, lemon ...