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518 items

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... petokrak ‘five-pointed’ and Farenhajtov ‘belonging to Fahrenheit’ have no comparative and superlative forms, so they will not be generated. Indefinite adjective forms are rarely used in compounds so they are not generated either. This example illustrates the complexity of capturing all information about ...
    ... other languages. This format can be briefly described in the following way: in a dictionary of lem- mas (DELAS) every lemma is described in full detail so that a dictionary of forms containing all necessary grammatical information (DELAF) can be generated from it, and subsequently used in various NLP ...
    ... comprehensive list of references related to the production of e-dictionaries of MWUs for these languages is given. The lexical description of MWUs in the so-called DELAC/DELACF format in practice means that MWU lemmas have to be collected, generated, and inflected. 2 Inflection of MWUs In order to produce ...

  • Numerical simulation of the Late Jurassic closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2021)
    ... single divergent phase where spreading regime is dominant. Effect of duration and magnitude ofthe second phase on model evolution is also explored. Our so far obtained simulations were able to reproduce the westward obduction and certainextension processes along the active (European) margin, which match ...

  • 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2020)
    ... single divergent phase where spreading regime is dominant. Effect of duration and magnitude ofthe second phase on model evolution is also explored. Our so far obtained simulations were able to reproduce the westward obduction and certainextension processes along the active (European) margin, which match ...

  • Fizičko-hemijsko raspadanje krečnjaka ugrađenih u objekte Beogradske tvrđave i mogućnost konsolidacije

    Maja Z. Franković (2022)
    Beogradska tvrđava, spomenik kulture od izuzetnog značaja za Republiku Srbiju, izgrađena je od krečnjaka badenske starosti. Njihova litološka heterogenost, u sadejstvu sa uticajima okruženja, rezultira visokim intenzitetima raspadanja. Korelacijom intrinzičnih sa ekstrinzičnim faktorima, definisani su fizičko-hemijski procesi raspadanja ugrađenih mikrofacija krečnjaka. Aplikacijom neorganskih konsolidanata na karbonatnoj bazi (nano-kreča i Ca-acetoacetata) i alkoksisilana, te korelacijom fizičko-mehaničkih svojstava pre i nakon tretmana, ispitana je efektivnost u pogledu zaustavljanja dekohezije krečnjaka. Određivanjem petroloških, tehničkih svojstava i mapiranjem formi raspadanja Mračne kapije kao ...
    krečnjaci, forme i intenziteti degradacije, fizičko-hemijsko raspadanje, konsolidacija, nano-kreč, Ca-acetoacetat, alkoksisilani, Mračna kapija

  • Prilog poznavanju režima i bilansa voda reke Resave

    Marina Mitrašinović, Vesna Ristić Vakanjac, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)
    Sliv Resave zauzima područje između reke Velike Morave i obronaka Kučajsko-beljaničkih planina. Sliv i režim ove reke kontroliše se dvema hidrološkim stanicama: Manastir Manasija (slivno područje u iznosu od 388 km2) i Svilajnac (681 km2). Za potrebe analize režima voda reke Resave i uticaja padavina na formiranje oticaja sa njenog sliva preuzeti su podaci o padavinama sa meteorološke stanice Crni Vrh (1037 m nm) koji odslikava režim gornjeg dela sliva ove reke, i meteorološke stanice Smederevska ...
    Hidrogeološke karakteristike, hidrološke karakteristike, režim voda bilans voda, rijeka Resava

  • Uticaj klimatskih promena na vodne resurse: primer sliv reke Mlave

    Vesna Ristić Vakanjac, Saša Milanović, Ljiljana Vasić, Boris Vakanjac, Saša Bakrač, Radoje Banković, Veljko Marinović (2023)
    Na teritoriji Jugositočne Evrope, pa samim tim i u delu gde živimo (Republika Srbija i Republika Bosna i Hercegovina) za očekivati je da dođe do značajnijeg porasta temperature vazduha u značajnijoj meri, što će imati značajnijeg uticaja na padavine, njihovu unutargodišnju raspodelu, kao i pojavu sve više prisutnih ekstremnih vrednosti (izuzetno sušnih i kišnih godina). Sve ovo će uticati i na sam režim površinskih i podzemnih voda, resursa bez kojih život na ovoj planeti ne bi ni postojao. Da ...

  • A Tel Platform Blending Academic And Entrepreneurial Knowledge

    Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović (2013)
    ... the life-long learning process of their employees. The platform provides an efficient answer to the main criticism that OER are biased towards the so called "big" languages, as it includes a powerful language support system, which enables the publishing of learning materials in various languages ...
    ... languages within the BAEKTEL platform. This also provides an efficient answer to the main criticism of OER that they are biased towards the so called "big" languages. In order to offer support in expert terminology within the multilingual approach, the BAEKTEL platform provides electronic ...
    ... textual resources (Fig 2). One of the basic lexical resources is the system of morphological dictionaries of Serbian simple words and compounds in the so-called LADL format [8]. Morphological dictionaries in the same format exist for many other languages, including French, English, Greek, Portuguese ...

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Frequency and Length of Syllables in Serbian

    Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)
    Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.
    frekvencije slogova, dužina slogova, srpski jezik
    ... can be evaluated. Several sonority scales were suggested (Blevins, 1995, p. 210: „[s]uch scales come in a variety of types ... fine- grained vs. not-so-fine-grained“), see e.g. Clements (1990) or Zec (1995). We chose perhaps the simplest one – we distinguish only sonorant and obstruent consonants, with ...
    ... text processing (see e.g. a discussion on this topic in Antić et al., 2006, pp. 118-121). The text under analysis (see Section 3) is pre-processed, so that it does not contain any zero-syllable words. 11 The maximum onset principle implies ...
    ... y significant also in both of these cases). The tendency to favour shorter syllables is obvious also from Table 4. Data from Table 2 were pooled so that each group contained at least 20000 syllables (tokens), and the weighted mean of syllable length (with frequencies serving as the weights; differences ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... chosen for morphological dictionaries was the so-called LADL format developed within the Labora- toire d'Automatique Documentaire et Linguistique under the guidance of Maurice Gross [1]. Thus the core of the sys- tem consists of the so called DELAS dictionaries of simple words and ...
    ... synonyms for each concept, as well as a definition of the concepts itself. The user then gets the pos- sibility to delete some of these synsets if he/she so wishes, namely in the case he/she decides that they pertain to con- cepts which are not of interest. The query can be further se- mantically expanded ...
    ... morphological and semantic query expansion was in- troduced in the GeolISS search function. Apart from the lexical resources we have mentioned so far, semantic query expansion within GeolISS also relies on a specially devel- oped geological dictionary, which represents a taxonomy with ...

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ана Младеновић, Јелена Ћалић (2021)
    ... Moesianindenter and the tectonic units in-between. Such stress field is shown to be highly heterogeneouseven in this relatively small research area, so local areas of transtension and transpression havealso been very important in controlling the recent fault kinematics in this part of the Carpatho-Balkanides ...

  • Postojeće stanje i budući trendovi u preventivnoj zaštiti podzemnih voda Srbije

    Vladimir Živanović (2022)
    Podzemne vode predstavljaju osnovni, a u mnogim zemljama i jedini resurs za javno vodosnabdevanje stanovništva tako da zaštita podzemnih voda predstavlja bitan preduslov za njihovo dugotrajno i održivo korišćenje. Kako u svetu, tako i u Srbiji, zaštita podzemnih voda se najvećim delom svodi na primenu preventivnih mera zaštite. Kod planiranja zaštite većih prostora sve više se koriste metode za ocenu ranjivosti podzemnih voda. Njihova primena je posebno naglašena u karstnim područjima zato što se tu izdvajaju delovi terena sa ...
    Zaštita podzemnih voda, karte ranjivosti podzemnih voda, karta hazarda, karte rizika od kontaminacije, monitoring podzemnih voda, Srbija

  • Regionalna karakterizacija karstnih podzemnih voda dela centralnog Balkana u funkciji njihovog održivog korišćenja i menadžmenta

    Veljko J. Marinović (2022)
    Karstne podzemne vode koristi oko 700 miliona ljudi na svetu, čime je njihov značaj za svetsko stanovništvo nemerljiv. U sklopu doktorske disertacije vršena su istraživanja i analize karstnih sistema dela centralnog Balkana (Srbije, Crne Gore i Savskog sliva Bosne i Hercegovine), kako bi se evaluirao ovaj dragoceni resurs. Analize su vršene na primerima karstnih sistema vrela Perućac, Seljašnica, Mokra i Mlava (Srbija), Oko Bijele i Rijeka Crnojevića (Crna Gora) i vrelo Bosne (Bosna i Hercegovina), kao i na regionalnom ...
    karstni sistem, podzemna voda, pritisci na kvantitet i kvalitet, menadžment podzemnih vodnih resursa

  • Funkcionisanje i uticaj epikarsta na režim, bilans i kvalitet podzemnih voda istočnog dela karstnog sistema Suve planine

    Branislav Z. Petrović (2020)
    Epikarst je deo karstne izdani koji se nalazi u okviru nadizdanske zone i predstavlja kompleksnu tačku dodira i mešanja nekonsolidovanog materijala sa površine terena, ostataka karbonatnih stena izmenjenih korozivnim delovanjem vode, živog sveta i njihovih ostataka, koja je delimično zasićena podzemnom vodom. Kompletan sud o stepenu razvoja i prisustva epikarsta na nekom krečnjačkom terenu moguće je doneti uz multidisciplinarna i obavezna detaljna hidrogeološka istraživanja. Poligon za sprovedena istraživanja je bio karstni masiv Suve planine, koja u geološkom i geografskom smislu ...
    epikarst, karstni sistem, podzemne vode, procesi samoprečišćavanja, hidrohemijski i mikrobiološki procesi u podzemnoj vodi

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... FSD Geološkog instituta Srbije, Beograd (in Serbian) Lazarević _ D (1994) Elaborat o preračunavanju rudnih rezervi arhitektonsko-gradjevinskog: kamena Skržuti kod Sirogojna. FSD Geoinžinjering, Niš (in Serbian) Luodes H, Selonen O, Pažikkonen K (2000) Evaluation of dimension stone in gneissic ...
    ... SFRJ 1:100 000). Savezni Geološki Zavod SFRJ, Beograd (in Serbian) 11 Bilbija N, Matović V (2009) Primenjena petrografija: svojstva i primene kamena. Gradjevinska knjiga, Beograd (in Serbian) Dimitrijević MD (1996) Zlatibor u svojim geološkim okvirima. In: Dimitrijević MD (ed) Geologija Zlatibora ...

  • Određivanje zbijenosti starog komunalnog otpada

    Jovana Janković, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić (2021)
    Bez obzira na savremene tretmane komunalnog otpada u svetu, u Srbiji je i dalje najčešći vid odlaganja na komunalne deponije, pa zbijanje otpada predstavlja jednu od ključnih faza formiranja deponije. Na ovaj način znatno se smanjuje zapremina otpada, ubrzava proces degradacije i produžava radni vek deponije. Zbog toga su geotehničke karakteristike komunalnog otpada prilikom zbijanja, veoma bitne kako u fazi projektovanja tako i u fazi izgradnje deponije i optimizacije prostora. Tu se pre svega misli na maksimalnu suvu zapreminsku ...
    komunalni otpad, deponija, Proktorov opit, optimalna vlažnost, maksimalna suva zapreminska težina

  • Univerzitet u Beogradu Rudarsko-geološki fakultet Master rad Modeliranje disperzije prašine u životnoj sredini u fazi proširenja P.K. Veliki Krivelj

    Magdalena Milanović (2024)
    Modeliranje disperzije zagađenja životne sredine predstavlja proces u kom se korišćenjem matematičkih modela vrši simulacija širenja i raspodele zagađenja u životnoj sredini, koje nastaje određenim aktivnostima. Modeliranje nam pomaže da predvidimo zagađenja koja dobijamo planiranim aktivnostima u zemljištu, vodi i/ili atmosferi određene regije, kako bi na vreme preduzeli odgovarajuće preventivne mere kojim se smanjuje ili upotpunosti eminiše uticaj na životnu sredinu i zdravlje ljudi. Glavni zadatak ovog rada je procena uticaja, projekta proširenja kopa Veliki Krivelj, na kvalitet vazduha. Rezultati koji ...
    Modeliranje disperzije zagađenja životne sredine, površinski kop Veliki Krivelj, AERMOD, zagađenje vazduha, disperzija prašine
    ... vazduhu predstavlja zagađujuću supstancu. |[8] Sumpor-dioksid (SO) je bezbojni gas karakterističnog i oštrog mirisa, teži od vazduha (2,5 puta ) i dobro se rastvara u vodi. Toksičnost mu se pojačava u uslovima povećane vlažnosti SO-. Oko 1/3 ukupno prisutnog sumpor-dioksida u atmosferi nastaje ...
    ... Evo nekoliko primera prirodnih izvora zagađenja vazduha: Vulkanske erupcije. Vulkani ispuštaju velike količine gasova kao što su sumpor- dioksid (SO-), ugljen-dioksid (CO-), vodena para, i čestice pepela u atmosferu. Ovi gasovi i čestice mogu značajno uticati na kvalitet vazduha, pa čak i globalnu ...
    ... zagađenja. Proizvodni procesi u fabrikama i elektranama često oslobađaju velike količine zagađujućih materija u vazduh. Ovo uključuje sumpor-dioksid (SO-), azotne okside (NO.), isparljiva organska jedinjenja (VOC), ugljen-monoksid (CO), ugljen-dioksid (CO-») i razne čestice. Sagorevanje fosilnih goriva ...

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... corpus of standard Serbian (as reference), in order to calculate the so-called keyness score, which is expected to represent the extent of the frequency difference. Frequency information is a crucial component in human language technology, so the FrAC module includes terminology to capture such information ...
    ... of function words and meaningless words. This, widely accepted, approach for information retrieval is not so successful for knowledge extraction, lexicographic and ter- minological purposes, so we are relying on a combination of syntactic patterns [34,42,68] and statistical association measures for domain ...
    ... component of several terminological phrases, for example, rudar na okresivanju (ripper), rudar na uglju (collier), rudar-podgrad̄ivač (timberman), and so forth. Over the past years, more entries related to raw material were added to SrpMD, which initially contained more than 3000 simple-word entries and ...

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... dictionaries of Serbian for NLP have been developing for many years now. In the dictionary of lemmas (DELAS) each lemma is described in full detail so that the dictionary of forms containing all the necessary grammatical information (DELAF) can be generated from it, and subsequently used for various ...
    ... sometimes deriva- tionally related forms of a word to a common base form. Lemmatization is the process of grouping together the inflected forms of a word so they can be ana- lyzed as a single item, identified by the word’s lemma, or a dictionary form. Stemming usually refers to a process that chops off the ...
    ... English, and ∼19% in Serbian that did not appear in the original texts. Keyword Extraction from Parallel Abstracts of Scientific Publications 51 So far, the SBKE method has been tested on longer English Wikipedia texts (with an average length of 5,919 words per text) and Croatian newspaper articles ...

  • 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 ...
    ... ries in the same for- mat have been produced for many other lan- guages. In dictionary of lemmas (DELAS) each lem- ma is described in full detail so that a dictionary of forms containing all necessary grammatical information (DELAF) can be generated from it, and subsequently used in various NLP ...
    ... for 33% of words from the existing dictionary there is only one corresponding FST class, for approx- imately 20% of words there are two classes, and so on, whereas for word endings of length 6 there is a single class for as much as 90% of words. In order to facilitate prediction of FST class, a ...
    ... on inflectional class metadata is used. Distinction between inflectional classes based on grammatical categories can be done only to some extent, so implicit knowledge from the existing dictionary of simple words is used to improve prediction. Figure 4: Relation between word endings and ...