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Упит dcterms_subject_txt:mathematical content

473 items

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... rudstone microfacies, and Rudstone microfacies. Algal rudstone microfacies is separated from Rudstone microfa- cies due to predominant algal detritus content. Further- more, these three microfacies types are limestones mineralogically composed of calcite (CaCOx), with very small amounts of silici-clastic ...
    ... easy workable algal rudstone was used for upper part and arch of the portal, hard and compact grainstone was built in lower parts of facade. Content of rudstone microfacies on both facades and for entire gate is very low, and it implies the possibility of its use in later restoration pha- ...
    ... the fortress. This slope is permanent source of moisture/water for castern side of gate. Water draining from the slope causes higher moisture content in the walls on the castern side of the gate in comparison to the western side (Fig. 7a). It has already been mentioned that these built limestones ...

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... under conditions with high residual water content, crystallization of trehalose could be induced On the other hand, the resulting lower affinity of trehalose for water could be advantageous for the long-term storage in samles with high moisture content (Starciuc et al., 2020). This could explain ...
    ... would become mobile and could form solid aggregates. This process is favored at higher storage temperatures and in the presence of high moisture content (Yue et al., 2016). Interestingly, sucrose alone was not effective as a stabilizer when primary drying was performed at -45 "C (Table 2). The ...
    ... Although the presence of water can also lead to a shift in the wavenumber of the OH-stretching band (Sri- tham and Gunasekaran, 2017), the moisture content was similar in all samples (about 3%), so its influence could be excluded when comparing different freeze-dried samples. The FT-IR spectrum of ...

  • Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7

    Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković (2019)
    Part of E-80 highway that passes through Serbia (from the city of Nis to the administrative border Merdare) is 77 km long. The highway is divided into two sections: the first from Nis to Plocnik (39.4 km long) and the second from Plocnik to the administrative border with Kosovo. The route is designed through a typical plain and hilly terrain in which different geological units are dominant: crystalline schists, neogene sediments of foothills and quaternary sediments in the valley ...
    ... formed of smaller torrential flows which gravitate from surrounding terrain to the Toplica River. It is formed of sands and gravel with smaller content of sandy clays and clayey sands, but with occasional local occurrences of muddy zones. These muddy zones indicate early stage of alluvial environment ...
    ... favourability is caused by high groundwater level, especially in the part of the terrain built of Pliocene series with extremely high groundwater content. Locally, terrains with steeper slopes are affected by modern processes and instability occurrences (shallow sliding is determined which affected ...

  • 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
    ... that at a uniformity coeffic must not contain more than 10% (Casagrande's criterion). For the intermediate values of the coefficient U, the grain content of fractions smaller than 0.02 mm is determined by linear interpolation [2:38-38]. The material in the transition layer should meet the filter criteria ...
    ... an indisputable fact that this test method is used as faster one in the world, but it is carried out with other tests: determination of Dpr, water content, correlation relations Ev2/Ev1, correlation between Ev2 and Evd, determination of degree of unevenness, coefficient of water resistance (for protective ...

  • Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)

    Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...
    ... 41 % Rr) from the Lower Miocene Aleksinac Basin, which is the largest and richest oil shale deposit in Serbia. The selected samples showed high content of total organic carbon (TOC > 13 wt. %), high hydrocarbon generation potential (Hydrogen Index, HI > 615 mg hydrocarbons/g TOC), but also certain ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... a rule bilingual, composed of one original text and its translation into another language. Thus, they represent two texts having the same content, but in two different lan- guages. The majority of parallel texts collected within the HLT Groupare are aligned, with Serbian most often ...
    ... pus which contains more than a million words [5]. III. THE WS4LR TOOL With the growth of the number of resources as well as their volume and content, their maintenance and develop- ment became more and more complex. In addition to that, there was also a growing need to use several different ...
    ... Although text processing in all three systems is based on dictionaries in LADL for- mat, none of them offered possibilities for management of the content of the dictionaries themselves. Thus a module was developed within WS4LR for the entry, review and up- date of lemmas of simple words and ...

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... Eng-TE, and removed stop words from it, producing a list mainly populated with content words. Then we lemmatised each token from the BoW. Aligned chunks in which the English part did not have at least one lemmatised content word from the BoW list were eliminated. ii Keeping only chunks (from the previous ...
    ... (translated as ‘dictionary words’). Con- sidering the specific application, these two chunks should match. If observed as unordered set of distinct content words, these chunks can be written as {reči, rečnika} and {reč, rečniku} (“iz” and “o” are prepositions, meaning from and about, and should be ...

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... ; Jalalifar, H.; Kamali, G.R.; Kalbasi, M.; Dev, P.R. A mathematical estimation for artificial lift systems selection based on ELECTRE model. J. Pet. Sci. Eng. 2011, 78, 193–200. [CrossRef] 13. Alemi, M.; Kalbasi, M.; Rashidi, F. A mathematical prediction based on SAW model. Middle East J. Sci. Res ...
    ... 89–1014.34 kg/m3 oil viscosity 2–681 mPas well deviation 0–35 ° share of corrosive substances 0–5 % solid particle content 0–16 % GOR 10–458 m3/m3 paraffin share 0–20 % water content 0–93 % forms of energy and source 8–9 grade possibility of service 5–7 grade possibility of automatic regulation ...
    ... 89–1014.34 kg/m3 oil viscosity 2–681 mPas well deviation 0–35 ◦ share of corrosive substances 0–5 % solid particle content 0–16 % GOR 10–458 m3/m3 paraffin share 0–20 % water content 0–93 % forms of energy and source 8–9 grade possibility of service 5–7 grade possibility of automatic regulation and ...

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... lithotype, age and location (Table 1). They did show some similarities, e.g., TOC content (55-68% range). Only PGB-W1 contained more mineral matter, which resulted in a reduced TOC (39%) (Table 2). Generally, the TOC content of the studied materials corresponded with their rank (Strapoc et al., 2011). The ...
    ... seam, seam, II -Main coal seam, and seam I -Upper coal seam (Kezovic, 2011). Coal from the Kolubara Basin is typical lignite with a high moisture content, lower net calorific value and a huminite reflec- tance of 0.30 ± 0.03 (Životic et al., 2013). 2.2.6. Slovenia - Velenje The Velenje coal mine is ...
    ... glass electrode (Cartrode pH E16M340), combined platinum and Ag/AgCl (E31M004) electrode and EC conductivity cell (CDC 30 T-3), respectively. Carbon content (total organic – TOC and total inorganic – IC) was determined by dry combus- tion using a TOC-VCSH with SSM-5000A module (Shimadzu, Japan). A detailed ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... europa.eu/legal-content/EN/TXT/?uri= CELEX%3A31998L0083 (accessed on 25 August 2016). 33. Council Directive 80/68/EEC of 17 December 1979 on the Protection of Groundwater against Pollution Caused by Certain Dangerous Substances. Available online: http://eur-lex.europa.eu/legal-content/EN/ TXT/?uri=C ...
    ... eu/legal-content/EN/TXT/?uri=CELEX%3A31993L0067 (accessed on 25 August 2016). 35. Council Directive 86/278/EEC of 12 June 1986 on the Protection of the Environment, and in Particular of the Soil, When Sewage Sludge is Used in Agriculture. Available online: http://eur-lex.europa.eu/legal- content/EN/TXT/ ...
    ... (Preference Ranking Organization Method for Enrichment Evaluation) are used in this paper. The consideration and description of these two methods from a mathematical aspect is presented briefly considering that these methods are explained in detail in numerous papers [21]. The AHP method is applied for analysis ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... , mathematics and other domains. Special attention was given to securing a high level and quality of project work, both regarding the quality of content, namely data and information, but also regarding the quality of structural relations among data, as well as quality of user interface featuring easy ...
    ... the mineral resources field. GeolIEP represents a basis for archiving and efficient handling of vector, raster and related thematic alphanumeric content in one place, as well as efficient management and usage of mineral resources. The use of GeolIEP results in cost reduction in data storage and archiving ...
    ... 9, 567 13 of 14 other domains. Special attention was given to securing a high level and quality of project work, both regarding the quality of content, namely data and information, but also regarding the quality of structural relations among data, as well as quality of user interface featuring easy ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • Energetska tranzicija u domaćinstvima: analiza usaglašenosti Srbije sa paketom „Čista energija za sve Evropljane“ / Energy Transition in Households: Analysis of Serbia’s Compliance with the „Clean Energy for All Europeans“ Package

    Boban Pavlović, Aleksandar Madžarević, Dejan Ivezić, Marija Živković, Dušan Mojić (2024)
    Zahvaljujući svojoj složenosti i heterogenosti, sektor domaćinstva predstavlja neizostavnu tačku u politikama energetske tranzicije. U Evropskoj uniji, potrošnja energije u domaćinstvima čini oko 26% finalne potrošnje energije, dok u Srbiji ovaj sektor ima najveći udeo u finalnoj potrošnji, što čini oko trećinu finalne potrošnje. Primenom mera energetske efikasnosti moguće je ostvariti značajne energetske uštede, što zajedno sa smanjenjem i supstitucijom upotrebe fosilnih goriva vodi manjem doprinosu klimatskim promenama i značajnom smanjenju zagađenja vazduha. Paket zakonskih mera “Čista energija za ...
    energetska tranzicija, paket čiste energije, regulatorni okvir, energetska politika, domaćinstva, srbija

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... resources In general, terminological resources in e-format can be organized in different ways and serve different purposes. Depending on their content, structure, and organization, terminological resources can be classified as indexes, glossaries, taxonomies, thesauruses and ontologies. Basically ...
    ... concept or a term, and the Metapodatak class for the corresponding author of the entry. There is also a Multimedija class for implementing multimedia content such as pictures, formulas in the form pictures, and the like. It should be noted that the multimedia documents are represented by metadata, such ...

  • 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
    ... refers to the terminological fi eld, and to the defi nition. Citations are tagged with , and bibliographic references with ; in the content of these elements some additional phrases are tagged, such as the names of locations (using the tag) or authors (using the ...
    ... tagging. Our main goal is to produce a central lexical database that will enable multiuser management of the lexical data and provide access to the content of the volumes that were already published. For the de- velopment of the lexical database model for the DSA, a similar approach was used as in Stanković ...

  • Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama

    Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović (2021)
    Zbijanje komunalnog otpada predstavlja jednu od osnovnih faza korišćenja komunalne deponije. Zbog toga je kao i kod drugih nasutih građevina, veoma korisno odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). Dobijeni rezultati mogu da posluže prilikom projektovanja kapaciteta deponije kao i prilikom definisanja obradivosti otpada. U dosadašnjoj praksi najčešći način određivanja parametra zbijanja je standardna metoda (Proktorov opit) koja se koristi u mehanici tla, uz eventualnu redukciju energije zbijanja. Međutim, različiti tretmani komunalnog otpada na ...
    deponija komunalnog otpada, zbijanje, Proktorov opit, malj sa šiljcima
    ... as with other embankment structures, it is уегу usefull to determine compaction parameters, maximum dry unit weight (ydmax) and optimal moisture content (Wopt). The obtained results can be изед in designing the capacity ог the landfill as well as when defining the workability of waste. In current ...

  • Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints

    Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski (2024)
    Apuseni-Banat-Timok-Srednogorie belt, danubicum, paleomagnetism, oroclinal bending

  • 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 ...
    ... another important NLP lexical re- source for Serbian, besides Serbian WordNet. However, both of them are not comparable with SMD either in size or in content, which is why SMD was chosen as the first lexicon for Serbian to be converted into a lexical database. 3. Morphological electronic dictionaries ...
    ... development of Serbian morphologi- cal dictionaries in the past decade. However, with the en- hancement of dictionaries and enrichment of their content some serious drawbacks of this tool became evident. Be- sides being a desktop application, discouraging cooperative work, it also does not have ...
    ... problem of the existing solution – local, single- user editing of dictionaries in textual form. The new lexi- cal database should also enable of its content export in var- ious formats. The Unitex3 format for DELA dictionaries (dictionaries of lemmas and dictionaries of inflected forms presented in the ...

  • 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

  • Geostatički proračuni sanacije klizišta šipovima

    Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević (2019)
    U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...
    sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova
    ... PUBLICATIONS   54 CITATIONS    SEE PROFILE Dusan Berisavljevic Institute of Transportation CIP 19 PUBLICATIONS   32 CITATIONS    SEE PROFILE All content following this page was uploaded by Dragoslav Rakic on 15 April 2020. The user has requested enhancement of the downloaded file. https://www.researchgate ...