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Упит dcterms_subject_txt:Applied Mathematics

122 items

  • On the distribution modulo 1 of the sum of powers of a Salem number

    Dragan Stankov (2016)
    It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... and English-Serbian corpora of literary texts, as well as different soware tools were developed in the scope of joint projects of the Faculty of Mathematics and the Department of Serbian at the Faculty of Philol- ogy in Belgrade. Language Technology helps unify Europe. Drawing on the insights gained ...
    ... of OpenOffice, funded in the 2008–11 period by the Ministry for Telecommunica- tions and Information Society through a project at the Faculty of Mathematics [46]). Interdisciplinarity has been recognised only in the latest cycle of scientific projects (for the 2011–2014 period) funded by the Ministry ...
    ... this project [48]. e project was later continued as a joint project of the Department of Serbian at the Faculty of Philology and the Faculty of Mathematics in the period from 2006 to 2010 under the name “A the- oretical and methodological framework for the mod- ernisation of Serbian” and from 2011 to ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... interval mathematics. Ambiguity, as a term, can be considered through the following three categories, depending on the phenomenon being modeled: • Probability theory, when the given conditions that characterize the term do not determine a unique expected result; • Interval mathematics, when it is ...
    ... assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using ...
    ... level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using ...

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... Faculty of Philology, Studentski trg 3, 11000 Belgrade, Serbia Email: cvetana@matf.bg.ac.rs Duško Vitas University of Belgrade — Faculty of Mathematics, Studentski trg 16, 11000 Belgrade, Serbia Email: vitas@matf.bg.ac.rs Abstract—In this paper we outline the use of the multipurpose software tool ...
    ... be produced from scratch. Serbian is, however, like all Slavic languages a highly inflectional language and such a shortcut procedure cannot be applied. We will illustrate this with one example. The nominal MWU petokraka zvezda ‘five-pointed star’ consists of an adjective followed by a noun, which ...
    ... two-component MWUs, in which the first component is an adjective, the second component is a noun, and the MWU does not inflect in number. This rule is applied as follows: if the first component satisfies (according to the dictionary of simple words) the specified grammatical conditions, namely, that it ...

  • Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit

    Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić (2015)
    ... Slimak Š., Lutovac S,. (2005): Technique of Blasting and Eartquakes, Faculty of Mining and Geology, Belgrade, pp. 199. [3] Simeunović D,.(1985): Mathematics, Faculty of Mining and Geology – Mining Department, Belgrade pp. 102- 103. [4] Ivanović B., (1973): Theoretical Statistics, Naučna knjiga, ...
    ... with the value for Rc determined in such a manner, whereas: vj < vc < vj+1. To find the value vc = v(Rc), the inter- polation formula will be applied: jc jj jj jc RR RR vv vv 1 1 . (15) With the value vc found in such a way, in accordance with the formula (7), the parameter n is obtained ...

  • Old or New, We Repair, Adjust and Alter (Texts)

    Cvetana Krstev, Ranka Stanković (2020)
    U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.
    ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja
    ... process is applied to already generated candidates but avoiding the circular replacements (e.g. ‘п’ → ‘и’ → ‘н’ → ‘п’). Example: if ппво occurs in a text as an unknown word, then ‘п’ → ‘и’ is applied twice which results in a string *ппво*_*ипво*_*пиво*_ииво*, after that ‘и’ → ‘н’ is applied resulting ...
    ... finite-state transducers. PAPER SUBMITTED: 13 October 2019 PAPER ACCEPTED: 08 December 2019 Cvetana Krstev University of Belgrade, Faculty of Mathematics cvetana@matf.bg.ac.rs Ranka Stanković University of Belgrade, Faculty of Mining and Geology ranka.stankovic@rgf.bg.ac.rs Belgrade, Serbia ...
    ... the word level – “incorrect words” or “suspicious words” are recognized by dictionaries (as not belonging to them), a problem specific solution is applied to transform them, and they are corrected if the offered solution is in a dictionary. The problems are usually solved locally, which means that only ...

  • Еоценска фауна југозападног дела Сирт басена (Либија)

    Љупко Рундић, Мери Ганић (2020)
    Еоцен, крупни мекушци, нумулити, ЈЗ Сирт басен, Либија

  • 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 Belgrade, Faculty of Philology Belgrade, Serbia cvetana@matf.bg.ac.rs Jelena Mitrović University of Passau, Faculty of Computer Science and Mathematics Passau, Germany jelena.mitrovic@uni-passau.de Ranka Stanković University of Belgrade, Faculty of Mining and Geology Belgrade, Serbia ranka@rgf ...
    ... _not (resource A in Fig 1). We introduced a classification threshold as the smallest percentage of recognized words in a tweet. This classifier was applied for 8 dif- ferent thresholds (Table 1) where positively classified tweets were marked with cl (recognized as tweets in BCMS), and negatively classified ...
    ... second relation similar_to is given below. "[rule2:][rule21:][rule23:][rule24:][rule25:][rule26:] [rule231:]...[rule265341:][rule265431:]" We have applied the set of 471 rules over each one of the 793 antony- mous pairs of synsets defined using the near_antonym relation, thus obtaining a set of 3,258 ...

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Softverski alati za korišćenje resursa za srpski jezik

    Ivan Obradović, Ranka Stanković (2008)
    ... dr.rgf.bg.ac.rs INFOTHECA – Journal of Informatics and Librarianship № 1-2, vol IX, May 2008 operates under the auspices of the Faculty of Mathematics of the University of Belgrade and gathers researchers in this field from several Fac- ulties. The most important and the most devel- oped among ...
    ... Memory eXchange (TMX) format5. Besides, the user can also choose the form of vi- sualization of aligned texts. Various XSLT trans- formations can be applied on aligned texts in XML format, transforming them into HTML or another format, depending on the type of visual- ization required. Besides the possibility ...
    ... Latin, and thus the results for the Serbian part of the query obtained from Google contain only pages in Cyrillic. When such a bilingual query is applied to an aligned text, WS4QE generates a filtered aligned document in TMX format. Based on the expan- sion of the bilingual query, which can be mor- ...

  • 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
    ... ’[omitted: In the seventh, sixth and fifth grade the number of bad students increased since ] many of the students [omitted: , who had good grades in Mathematics during the school year, ] got poor grades on the exam’. The same example shows an inserted part in square brackets, namely “su”, the simple present ...
    ... it is important to note all its complements (objects, subject and object complements etc.). The notion of lexicographic relevance may also be applied to the selection of good dictionary examples. The constituents important for proper analysis of an LU are also important for its illustrative examples ...
    ... Practical Machine Learning Tools and Techniques". Morgan Kaufmann, Fourth Edition. Hosmer Jr., D. W., Lemeshow, S. & Sturdivant, R. X. (2013). Applied Logistic Regression. Vol. 398. Hoboken, NJ: John Wiley & Sons. Ivanović, N., Jakić, M. & Ristić, S. (2016). Građa Rečnika SANU – potrebe i mogućnosti ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... cipal real‐valued branch of the  Lambert W‐function. Applied Mathematics Letters 11(6), 27‐31. (на енглеском)  33. Braniš, M., Domasova, M., Rezačova, P. 2007. Particulate air pollution in a small  settlement: the effect of local heating. Applied Geochemistry 22(6), 1255–1264. (на  енглеском)  34. ...
    ... ess on Mathematics, Organized by Mathematical Society of  South‐Eastern Europe and Union of Mathematicians of Macedonia, 16–20 September  /in press/ (на енглеском)  55. Brkić, D. 2009f. An improvement of Hardy Cross method applied on looped spatial  natural gas distribution networks. Applied Energy 86(7‐8) ...
    ...  43–56. (на енглеском)  109. Ewing, R.E., Wang, J., Weekes, S.L. 1999. On the simulation of multicomponent gas flow  in porous media. Applied Numerical Mathematics 31(4), 405‐427. (на енглеском)  110. Fanning, J.T. 1877. A practical treatise on water‐supply engineering. Van Nostrand, New  York. (н ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... cipal real‐valued branch of the  Lambert W‐function. Applied Mathematics Letters 11(6), 27‐31. (на енглеском)  33. Braniš, M., Domasova, M., Rezačova, P. 2007. Particulate air pollution in a small  settlement: the effect of local heating. Applied Geochemistry 22(6), 1255–1264. (на  енглеском)  34. ...
    ... ess on Mathematics, Organized by Mathematical Society of  South‐Eastern Europe and Union of Mathematicians of Macedonia, 16–20 September  /in press/ (на енглеском)  55. Brkić, D. 2009f. An improvement of Hardy Cross method applied on looped spatial  natural gas distribution networks. Applied Energy 86(7‐8) ...
    ...  43–56. (на енглеском)  109. Ewing, R.E., Wang, J., Weekes, S.L. 1999. On the simulation of multicomponent gas flow  in porous media. Applied Numerical Mathematics 31(4), 405‐427. (на енглеском)  110. Fanning, J.T. 1877. A practical treatise on water‐supply engineering. Van Nostrand, New  York. (н ...

  • Developing Termbases for Expert Terminology under the TBX Standard

    http://drug.rgf.bg.ac.rs/s/repo/item-set/522 (2014)
    ... environments (e.g., TM systems) [9]. Termbases developed at FMG followed the principle that terminology, as ev- ery other theory, should have an applied side from which applications can be generated to solve problems. To that end they have to describe real data and must be internally consistent [2] ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... G., Krstev, C., Vitas, D., Obradović, I. (eds.) Natural Lan- guage Processing for Serbian – Resources and Applications, pp. 101–112. Faculty of Mathematics, University of Belgrade. http://jerteh.rs/wp-content/uploads/2015/ 05/Zecevic.pdf A u t h o r P r o o f Author Queries Chapter 8 Query ...
    ... rule- based system. Both the bag of words and the metadata were then used for pre-indexing each document. A combination of several based measures was applied for selecting and ranking of retrieval results of indexed documents for a specific query and the results were compared with the initial retrieval system ...
    ... system. Both the bag of words and the metadata were then used for pre-indexing each document. A combination of several tf idf based measures was applied for selecting and ranking of retrieval results of indexed documents for a specific query and the results were compared with the initial retrieval system ...

  • Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova

    Daniel P. Kržanović (2016-06-14)
    Optimizacija graničnog sadržaja metala u rudi jedan je od osnovnih koraka u planiranju i dizajniranju površinskih kopova i ima za cilj postizanje maksimalne neto sadašnje vrednosti (NPV). Iz tog razloga, optimizacija graničnog sadržaja i danas je predmet mnogih istraživanja u rudarskoj nauci, sa ciljem rešavanja praktičnih problema u eksploataciji ležišta.Dugoročno planiranje eksploatacije na površinskim kopovima podrazumeva sagledavanje svih relevantih parametara i faktora (geologije rudnog ležišta, tehnologije proizvodnog procesa, kapaciteta otkopavanja i prerade, troškova, cena metala, iskorišćenja i dr) kako ...
    površinski kop, dugoročno planiranje, optimizacija graničnog sadržaja, maksimizacija neto sadašnje vrednosti (NPV).
    ... and Metallurgy, Carlton Victoria, Australia. Caccetta, L., Giannini, L.M., 1988, An Application of Discrete Mathematics in the Design of an Open Pit Mine, Discrete Applied Mathematics, Vol. 21, pp. 1–19. Caccetta, L., Hill, S.P., 2003, An Application of Branch and Cut to Open Pit Mine Scheduling ...
    ... Computers and Mathematics in the Mineral Industries (APCOM), Brisbane, Australia, pp. 261–265. YI, R., Sturgul, J.R., 1988, Analysis of cutoff grades using optimum control theory. APCOM 87, Proceedings of the Twentieth International Symposium on the Application of Computers and Mathematics in the Mineral ...
    ... do with real options applied to mine project evaluation?, 35th APCOM Symposium, Australia, Proceedings, pp. 557-570. McIsaac, G., 2008, Strategic Design of an Underground Mine Under Conditions of Metal Price Uncertainty, Doctoral thesis, Queens University: Faculty of Applied Science, Department ...

  • Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema

    Svetlana M. Štrbac-Savić (2016-06-10)
    Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...
    podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija
    ... Metallurgical and Petroleum Engineers Inc. New York, 1984. [GUO85] Hong Guo, Identification coefficient of relational grade of Grey systems, Fuzzy Mathematics, 2, pp. 55-58,1985. [HAMRIN97] H. Hamrin, Guide to Underground Mining Methods and Applications (Stockholm: Atlas Copco, 1997) [HONG09] Fang ...
    ... [HU85] Hu Tao and Huang Xiaoqing, Analysis of factors harming the Korean Pine- applying Grey Sistem theory to the reasearch on ecosystem, Fuzzy Mathematics, 2, pp.51-54, 1985. [HUANG87] Huang Jianer, Applicatins of Grey statistics to investment decision making of foresty, Economic Problems of ...
    ... Ioan topor, Cost Analysis and Reporting the Performances of Companies in the Mining Industry, Proceedings of the 6th International Conference on Applied Economics, Business and Development (AEBD '14), Lisbon, Portugal October 30- November 1, 2014. pp. 51-56, 2014. http://www.wseas.us/e-libra ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... City of Novi Sad in 2012. Faculty of Mathematics, University of Novi Sad, (Contract No. VI-501-2/2012-35 of 27 April 2012. Reviewed by: Gordana Bogdanović, PhD, Colledge of Applied Professional Vranje, Serbia Ana MilenkovićAndjelković, PhD, Faculty of Mathematics, Department of Chemistry, University ...
    ... Graduated from the Faculty of Biology, University of Montenegro; 2001. Specialist degree from the Faculty of Natural Mathematics Sciences; 2002. MSc degree from the Faculty of Natural Mathematics Sciences, direction Biology; Faculty of Agriculture, University of Novi Sad; 2010. PhD degree from the Faculty ...
    ... Full professor Affiliation: University of Niš, Faculty of Sciences and Mathematics, Department of Chemistry Contact: sneskate yahoo.com Education: Snežana Tošić holds a PhD from the Faculty of Sciences and Mathematics in Niš, University of Niš. Research and Professional Experience: Since ...

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... Belgrade, 11351, Serbia, eFaculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova cesta 2, Ljubljana, 1000, Slovenia, fInstitute of Mathematics, Physics and Mechanics, Jadranska 19, Ljubljana, 1000, Slovenia, and gStructure Analysis, Institute of Physics, Academy of Sciences of the Czech ...
    ... 2017). In all reported samples, the zero-field cooled magnetic susceptibility was measured as a function of temperature between 2 and 300 K in an applied field of 1000 Oe. Latshaw et al. (2016b) reported the first study on the magnetism of the structural family of Na3REESi2O7 compounds (REE = Ho, ...
    ... (1995) in combination with an empirical absorption correction using spherical harmonics (implemented in SCALE3 ABSPACK scaling algorithm) were applied during the data reduction. All structures were refined on F2 by full-matrix least-squares techniques using the programs SHELXL (Sheldrick, 2015) ...