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Упит dcterms_subject_txt:Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry

2353 items

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... repository for digital archiving, query, retrieving, analysis and visualization of geological data. The development and implementation of the GeolISS is managed by a team from the Faculty of Mining and Geology of Belgrade University and financed by Ministry of the Environmental protection. The main ...
    ... field data records and measurements, the basis for classification, interpretations and modeling of geological features. Any observed property can be expressed as a text, number, picture and geometry (location). Spatial entity, which is treated as observation locations and mapped/interpreted ...
    ... criteria in the source and target language. A filtered TMX document is transformed into XML, TXT and HTML output files by XSLT transformations. The developed web application receives the user query, and subsequently uses the local web service WS4QE to expand the query and forward it to the Google ...

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... general style must remain similar in all translated versions. Reference materials from course authors are also helpful, as well as previous translations, glossaries, style guides, translation memory files. With an iterative and agile approach to translation it is possible to adapt as problems arise ...
    ... University of Belgrade, 2013. [20] D. Vitas and C. Krstev. “Construction and Exploitation of X-Serbian Bitexts”. In Cristina Vertan and Walther v. Hahn (eds.) Multilingual Processing in Eastern and Southern EU Languages: Low-Resourced Technologies and Translation, pp. 207-227, Cambridge Scholars ...
    ... of them hard to translate into and with relatively weak machine translation (MT) support. Phrase-based and syntax-based SMT models are developed to address language diversity and support the language independent nature of the methodology. For high-quality MT and to add value to existing infrastructure ...

  • Permanent GNSS monitoring of landslide Umka

    Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)
    Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...
    клизиште, перманентно праћење, ГНСС
    ... technology for infrastructure facilities and terrain stability monitoring“, financed by Ministry of Education, Science and Technological Development of the Republic of Serbia, and the collaboration between University of Belgrade, Faculty of Mining and Geology and Faculty of Civil Engineering, Institute ...
    ... between Epoch 0 and Epoch 1 and between Epoch 0 and 96 PROCEEDINGS OF INTERNATIONAL CONFERENCE ON CONTEMPORARY THEORY AND PRACTICE IN CONSTRUCTION XIV PERMANENT GNSS MONITORING OF LANDSLIDE UMKA Epoch 2 were calculated. Subsequently, the magnitude of the displacement vector and the azimuth ...
    ... northwest and the vertical displacement was nearly -16 cm. Generally, both graphics indicate that the Umka landslide is moving continuously and significantly towards the northwest, i.e. towards the Sava river. The average annual 2D displacement was approximately 22 cm and 15 cm, for first and second ...

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    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 ...
    Morphology, Lexicon, lexical database, Standards for LRs
    ... category for nouns are singular and plural (shared by all involved languages), and besides that dual (for Slovene and Czech) and count (for Bulgarian). This last value in Bulgarian is similar to ‘paukal’ in Serbian which is used with small numbers two, three and four. This value, however, does not ...
    ... gender masculine, and in the same time grammatical number singular and natural number plural. Natural gender and number, instead of grammatical gender and number are used for verbal forms sastali and su. To veče, petorica(fem/sing) džentlmenovih kolega sastali(masc/pl) su(pl) se već u osam časova ...
    ... 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 ...

  • Wordnet Development Using a Multifunctional Tool

    Ivan Obradović, Ranka Stanković (2007)
    In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...
    Wordnet development, language resource integration, HLT tools
    ... regular expressions and inflectional and morphological finite state transducers (FSTs) to locate morphological, lexical and syntactic patterns, remove ambiguities, and tag simple and compound words in texts. The text parsing possibilities offered by regular expressions and FSTs proved also useful ...
    ... based on LADL format and supporting resources in Unicode has been developed in parallel, and is also available 6 . Since all three systems (Intex, Unitex, and NooJ) provide for processing of texts on basis of dictionaries, in combination with regular expressions and FSTs, and each of them has ...
    ... wordnets for Bulgarian, Greek, Romanian, Serbian and Turkish and expanding the Czech wordnet, followed an approach similar to EuroWordNet [13]. Namely, BalkaNet wordnets were also developed on basis of PWN and the top-ontology accepted in EuroWordNet, and aligned by using ILI. From a lexicographer’s ...

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... of ironic and non-ironic statements. In the paper [27] comparison of Naive Bayes (NB) and Decision Trees (DT) methods used to classify tweets into ironic and non-ironic, showed that the results achieved by DT method measured by the F1 measure were better (71.5% and 53.3% for the balanced and imbalanced ...
    ... used for creating features have to be changed and adjusted. To this end, a modified list of stylistic and semantic markers for a sarcasm detection has to be improved and the sen- timent lexicon has to be changed to contain hateful and offensive words and phrases. But, like in the case of irony classification ...
    ... features provide similar and low performance measures. The results of both classifiers show low grade of recall and it shows us that we should enlarge and improve lexical re- sources that have been used and expand the set of ontological rules to include procedures of generalization and specifications of con- ...

  • Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)

    Dejan Radivojević, Ljupko Rundić (2017)
    ... less present then Badenian one and could be found in a very limited area. Generally, these sediments are very thin and represented with siliciclastics and limestones. °e Pannonian, Pontian, Pliocene and Quaternary sediments belong to postrift stage in the broader sense and lays unconformably over the ...
    ... less present then Badenian one and could be found in a very limited area. Generally, these sediments are very thin and represented with siliciclastics and limestones. The Pannonian, Pontian, Pliocene and Quaternary sediments belong to postrift stage in the broader sense and lays unconformably over the ...
    ... occurred simultaneously throughout the area, and it is possible to speak only about synrift and postrift stage in the broader sense (MATENCO & RADIVOJEVIĆ, 2012). In the Serbian northeastern part of Pannonian Basin, sediments of the Lower and Middle (Badenian and Sarmatian) Miocene are assigned to synrift ...

  • 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 ...
    ... form of finite-state transducers (Vitas and Krstev, 2012), enabled the development of a comprehensive rule-based system for NER Srp- NER. This system presented by Krstev et al. (2014) targeted 11 classes of NEs: dates and time (moments and periods), money and mea- surement expressions, geopolitical ...
    ... names (co- untries, settlements, oronyms and hydronyms), and personal names (one or more last names with or without first names and nicknames). The system was developed to recognize NEs in 1253 newspapers and similar texts. It was manually evaluated on a sample of unseen newspaper texts. The overall ...
    ... were trained and evaluated (SpaCy and Stan- ford). As a support for the developed NER models, Šandrih et al. (2019) joined several existing tools and developed various new tools, combined into a web platform NER&Beyond.2 Although NER systems in general were de- veloped mostly for newspaper and similar te- ...

  • 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

  • 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

  • Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy

    Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)
    anizik, ladin, karbonati, litostratigrafija, biostratigrafija, konodonti, radiolarije, dijageneza
    ... lime- stone in terms of numbers and importance is 7b:pbytes sp. found as reworked bioclasts in the graded grainstone and rudstone facies (MF2, samples Gy1 and 2), in the peloidal bioclastic grainstone and boundstone facies (MF5, samples Gy51 and up) (Fig. 8/1) and, most im- portantly, the “e ...
    ... sandstone and dacites in the Gy - 5, and Lower 'Triassic mixed carbonate- siliciclastics in the Ka — 1 (Kisap4ti) and in the Szi – 1 (Szigliget) (Fig. 1/b-c). The Lower Triassic sedimentary sequence (“V/erfen group”) reaches 500 m in thickness in the Szi – 1 borehole and includes sabkha and lagoonal ...
    ... Highland. Isopachous and radiaxial fibrous calcite cement found in the grainstone and boundstone facies are indicative of carly lithification and diagenesis in the marine phreatic zone. “Evinosponglae”-type ce- ment is described for the first time from the Balaton Highland and ıt is similar to ...

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... biomass supplier and district heating system operator. Cooperative model is optimal framework for determination ideal ratio between fuel and heat prices, and adjustment of system profitability, because cooperative members are in the same time fuel sellers and heat energy consumers, and they also expect ...
    ... e fund. Cooperative would organize biomass collecting and woodchips production. Cooperative members and other forest owners in Kostojevići and surrounding settlements will provide biomass. In addition, cooperative would organize distribution and selling of heat. Cooperative model is optimal framework ...
    ... of Mining and Geology 2Standing Conference of Towns and Municipalities, Belgrade Abstract: Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One ...

  • Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian

    Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)
    slogovi, distribucija rang-preciznost, slovenski jezici

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • 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
    ... revitalized, and various possibilities of updating the work on this vocabulary have since been considered (Vitas & Krstev, 2015; Ivanović et al. 2016). The digitization (which is also the topic of the present paper) of the published volumes and raw materials (lexicographic leaflets) began in 2016, and the ...
    ... semantic, accentual and grammatical (phonetic, morphological and, more recently, syntactic) information, the DSA also includes indications of the normative, functional, stylistic and socio-historical status of the lexical entries, as well as their spatial and temporal scope and domain of use. Apart ...
    ... па̏леоце̄н and палео̀це̄н ‘paleocen’ in our example), full forms and their abbrevia- tions (др for доктор ‛doctor’), orthographic variants and diff erent pronunciations (Ekavian sneg and Ijekavian snijeg ‘snow’). LexicalSense is used to represent a particular sense of a lexical entry, and to 4 https://www ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... variables related to A itself and to R, M and S. It is necessary to describe five linguistic variables i.e. fuzzy sets: poor, adequate, average, good and excellent. Fuzzy sets are in triangular form, and they are presented in relation to membership function (μ) and measurement units of A indicators ...
    ... in terms of R, with grades "good" in extent of 40% and “average” in extent of 60%; M as "average" in extent of 100% and S as "adequate" in extent of 100%; machine Dressta as "average" in all terms and Caterpillar as "good" in terms of R and S and "excellent" in term of M. This can be written in the ...
    ... breakdowns and delays. The availability is commonly used as a measure of dependability. Availability is expressed by quantitative indicators, and these indicators are measures of dependability and quality of service. Availability performance has a decisive influence on the dependability and the quality ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... regions and sectors. CO> emissions increased in North America and Asia (excluding the People's Republic of China), to a greater extent than emissions reductions in Europe and China. At the global level, CO>» emissions from electricity generation and the transport sector increased by 261 Mt and 254 ...
    ... air, soil, and water. Sector of production and use of coal also provides Jobs to around 230.000 people in mines and power plants across 31 regions and 11 EU countries [8]. Table 1. The US coal consumption in 2021 [6] Electric power | Industrial total | Commercial | Residential and transportation' ...
    ... led by increased Asian market and economic development. Global demand for electricity increased by 2.7% [4]. This paper analyzes production and emissions of CO in sector of electricity in two big worlds region - EU-27 and US. The emission of CO> in EU-27 and US in last 30 years are anatomized ...

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... [3:4-5]. Clay materials and materials that can be compacted and consolidated cannot be installed in the transition layer. The surface of the transition layer meets the conditions: transverse slope of The load-bearing capacity of the transition layer meets the conditions: for the construction and improvement ...
    ... artificial filter materials, such as geotextiles. The load-bearing capacity of the embankment layers, except for the load-bearing capacity at the level of the protective and transitional layer planum, for the construction and improvement of open track tracks and main tracks on main and regional railways ...
    ... The criteria to be met by the materials installed in the protective and transition layer are given in Table 2, while the criteria for embankments are given in Table 3. Table 2. Minimum value of deformability modulus Ev2 and degree of compaction Rc* for the protective and transition layer of the substructure ...

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен