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Упит dcterms_creator_txt:Papazachos C.B., G.N. Tsokas, I.N. Tziavos, Vasiljević Ivana, Stampolidis A.

1665 items

  • Geotechnical Conditions for Construction of Savski Trg Metro Station as a Part of the Belgrade Metro Line One

    Nemanja Stanic, Dragoslav Rakic, Josip Isek, Slavoljub Simic (2024)
    In order to solve serious traffic congestion in Belgrade, a number of studies regarding the Belgrade Metro construction have been carried out since 1973. However, only in 2019, the routes of the future metro lines 1 and 2 were de-fined as a part of the General Metro Construction Project. The lines are de-signed to intersect at the location of Sava Square, where an interchange met-ro station will be built. It represents a complex geotechnical structure consist-ing of three different ...
    metro station, geotechnical modelling, displacements

  • Bioleaching Process for Copper Extraction from Waste in Alkaline and Acid Medium

    Ivica Ristović, Darina Štyriaková, Iveta Štyriaková, Jaroslav Šuba, Emilija Širadović (2022)
    Flotation wastes are becoming a valuable secondary raw material and source of many metals and semimetals worldwide with the possibilities of industrial recycling. The flotation tailings contain oxide and sulfide minerals that have not been sufficiently stabilized and form acidic mine waters, which in turn contaminate groundwater, rivers, and reservoi6sediments. An effective way to recycle these mine wastes is to recover the metals through leaching. While the focus is on acid bioleaching by iron- and sulfur-oxidizing bacteria, alkaline leaching, ...
    bakar, alkalno, kiselo bioluženje, sekundarne sirovine

  • A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment

    Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)
    Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...
    lexical semantic resources, sense alignment, lexicography, language resource

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • The number of unimodular roots of some reciprocal polynomials

    Dragan Stankov (2020)
    We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials
    ... known that the minimal polynomial of a Salem number is reciprocal. We say that a polynomial of degree d is reciprocal if P (x) = xd P (1/x). If moduli of coefficients are small then a reciprocal polynomial has many unimodular roots. A Littlewood polynomial is a polynomial all of whose coefficients ...
    ... There is a bound B1 of the modulus of the first derivative of f2(t ). Indeed | f ′ 2(t )| = | ∑k j=1 j a j sin j t | ≤ ∑k j=1 j |a j | =: B1. (ii) There is a bound B2 of the modulus of the second derivative of f2(t ). Indeed | f ′′ 2 (t )| = | ∑k j=1 j 2a j cos j t | ≤ ∑k j=1 j 2|a j | =: B2 ...
    ... unimodular. If |a | > 1 then +k C(x2" + ay x" + ax" +1) = 2arccos(1/a))/1 so that it has the minimum value 2/3 when a) = 2 and C(P) tends to one as a approaches infinity. If we exclude trinomials and quadrinomials then it is clear that the limit points of C(P2,) are always greater than zero. A natural question ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology

  • 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

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи
    ... model. The second hypothesis, hypothesis (9), is a modified hy- pothesis (11) from Ref. [38] as it contains a new exponent ν ′ (instead of ν2D) and a different constant A′ in the expression A′(l ) ≡ (A′ − �)l1/ν ′ l1/ν3D − � for the amplitude A′(l ) in the CCC case reflecting the dif- ferences ...
    ... [39] L. A. Nunes Amaral, A.-L. Barabasi, and H. E. Stanley, Phys. Rev. Lett. 73, 62 (1994). [40] A. A. Middleton and D. S. Fisher, Phys. Rev. B 65, 134411 (2002). [41] Y. Liu and K. A. Dahmen, Europhys. Lett. 86, 56003 (2009); Phys. Rev. E 79, 061124 (2009). [42] R. A. White and K. A. Dahmen, ...
    ... the matching right-hand sides, one can solve (A3) for A’(/) and, in this way, find that (A’ _ Ay’ AO = [i> — A (A6) This equation led us to hypothesis (9), which is a modified hypothesis (11) from Ref. [38] as it contains a different constant A’ and exponent v’ that is, according to our numerical data ...

  • The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović (2021)
    geološko skladištenje CO2, naftna ležišta, Srbija, VIKOR, TOPSIS
    ... preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study | Lola Tomić, Vesna Karović Maričić, Dušan Danilović | Energy Sources, Part A: Recovery, Utilization, and Environmental Effects | 2021 | | 10.1080/15567036.2021 ...
    ... Sources, Part A: Recovery, Utilization, and Environmental Effects ISSN: (Print) (Online) Journal homepage: https://www.tandfonline.com/loi/ueso20 The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study Lola ...
    ... Danilović (2021): The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, DOI: 10.1080/15567036.2021.1936303 To link to this article: ...

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam
    ... analyses were per- formed on a Vario III C, H, N, S Elemental Analyzer in CHS mode. Mass spectroscopy was performed on a Waters SYNAPT G2-Si/- nanoACQUITY UPLC system. pH Measurements were carried out using a Mettler Delta 350 digital pH meter with a resolution ±0.01 mV, with a combination glass electrode ...
    ... [21]. The addition of CT-DNA to a solution of 1–3 complex, resulted in a significant hyperchromic effect with the appearance of a new band at 262 nm, but with only insignificant absorption changes in the region 300–500 nm, see Fig. 3. A hyperchromic shift with a small red/blue shift indicates i ...
    ... and CT-DNA Vera M. Divac a,⇑, Aleksandar Mijatović b, Marina D. Kostić a, Jovana Bogojeski a,⇑ aUniversity of Kragujevac, Faculty of Science, R. Domanovića 12, 34000 Kragujevac, Serbia bUniversity of Belgrade, Faculty of Mining and Geology, Ðušina 7, 11000 Beograd, Serbia a r t i c l e i n f o Article ...

  • A tool for identifying the criticality in the disordered systems with metastable dynamics

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević (2021)
    Физика кондензоване материје
    ... at: www.dr.rgf.bg.ac.rs Physica A 572 (2021) 125883 Contents lists available at ScienceDirect Physica A journal homepage: www.elsevier.com/locate/physa A tool for identifying the criticality in the disordered systems withmetastable dynamics Svetislav Mijatović a,∗, Dragutin Jovković b, Sanja Janićević ...
    ... Stefan Graovac a, Djordje Spasojević a a Faculty of Physics, University of Belgrade, POB 44, 11001 Belgrade, Serbia b Faculty of Mining and Geology, University of Belgrade, POB 162, 11000 Belgrade, Serbia c Faculty of Science, University of Kragujevac, POB 60, 34000 Kragujevac, Serbia a r t i c l e i ...
    ... 16 ± 0.03 using scaling and collapsing methods. Regarding the data shown in Fig. 4(a) and/or Fig. 3(a), one could ask a question whether the value of Hc(R, L) for the regular system is the same as for the system with a preset spanning interface if the system is large enough. The caution is needed here ...

  • The effect of finite driving rate on avalanche distributions

    Sonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević (2021)
    Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear Physics
    ... 181–267 [14] White R A and Dahmen K A 2003 Phys. Rev. Lett. 91 085702 [15] de Queiroz S L A and Bahiana M 2001 Phys. Rev. E 64 066127 [16] Travesset A, White R A and Dahmen K A 2002 Phys. Rev. B 66 024430 [17] Tadić B 1996 Phys. Rev. Lett. 77 3843–6 [18] Tadić B 1999 Physica A 270 125–34 [19] Pérez-Reche ...
    ... Y and Dahmen K A 2009 Europhys. Lett. 86 56003 [41] Liu Y and Dahmen K A 2009 Phys. Rev. E 79 061124 [42] Perković O, Dahmen K A and Sethna J P 1999 Phys. Rev. B 59 6106 [43] Dahmen K A and Sethna J P 1996 (arXiv:cond-mat/9609072v1) [44] Sethna J P, Dahmen K, Kartha S, Krumhansl J A, Roberts B W and ...
    ... zero-temperature nonequilibrium random field Ising model (RFIM) in three dimensions [1, 22] being a paradigm of the nonequilibrium response of a complex spin system and in the same time a good representation of a large number of impure disordered ferromagnets. The criticality of the nonequilibrium zero- ...

  • Design and drilling of wells in formations with high pressure

    Vojin Solomun (2024)
    Objectives of this Thesis are to: - Develop an awareness of the challenges presented from elevated temperatures and pressures in well construction. - Learn the key differences between ―normal‖ condition wells and HPHT wells. - Understand some of the indicators of thermal- and pressure-related problems. - Understand the responses which may be made to mitigate high pressure and high temperature ,,HPHT‘‘ challenges while drilling wells. HPHT wells are an unavoidable consequence of the ever expanding search for oil and gas resources around the world. As wells are ...
    HPHT, well, challenges, design, oil and gas
    ... (350*F) on the seafloor for a well with a subsea wellhead or at the surface for a well with a surface wellhead. Institute of Petroleum: anticipated surface pressure requiring pressure control equipment with a rated working pressure in excess of 690 bar (10,000 psi). APLU: a potential pressure greater ...
    ... 1035 bar (15,000 psi) or a temperature rating greater than 177"C (350%F); (2) The maximum anticipated surface pressure or shut-in tubing pressure is greater than 1035 bar (15,000 psi) on the seafloor for a well with a subsea wellhead or at the surface for a well with a surface wellhead; or (3) ...
    ... KL ' - aMa nootms 1 AA A M Sebi I ' NI R. NBJ —: ! A leA f svayaco | iii KOyAy a A N . VO JO ' ___ Bg AODR O, _ peuvNi - lla PEĆAT || s oO AM y ' - i Ultra HP/HT \ š 177 H ž· -1 || š AAconevi H Š 15 s || Š g EOM % puwoeva OkEP :i! Agreao 46 ”ER rs Ćl ı 100 A | Š š ši FBI Totaš Operator ...

  • On the compatibility of lexical resources for NooJ

    Ranka Stanković, Miloš Utvić, Duško Vitas, Cvetana Krstev, Ivan Obradović (2012)
    Lexical resources for many languages are provided for the NooJ linguistic development environment. Meta-data descriptions of morphosyntactic and semantic properties of these languages and their resources are a mandatory part of each language module. In this paper we analyze how well the meta-data actually describe resources for a chosen subset of languages and to what extent are they compatible across languages to support multilingual processing. We show that there is place for improvement in both directions.

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • Nonequilibrium athermal random-field Ising model on hexagonal lattices

    Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević (2021)
    Изингов модел, хексагонална решетка
    ... RANDOM-FIELD ISING ... PHYSICAL REVIEW E 103, 032147 (2021) (a) L=32768 L=1024 * regular system =| regular system preset interface * preset interface size 100 size 100 v preset interface °* preset interface . size 32768 size 1024 ~ ‘a = a . a . a a mie C2 bee eee ES 0.4 0.6 0.8 (b) L=32768 L=1024 * regular ...
    ... evolution of those systems. A. Avalanche propagation for a given value of external field In the previous section we showed that there is a spe- cific condition for appearing of the biggest avalanches which holds in a wide range of disorders starting from zero up to a 5 5 i} i=} i} i=} i} i} 0.3+ f=16 ...
    ... some regularities in the evolution of those systems. A. Avalanche propagation for a given value of external field In the previous section we showed that there is a spe- cific condition for appearing of the biggest avalanches which holds in a wide range of disorders starting from zero up to FIG. ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... required to compare Mi and Mo. The degree of possibility of a convex triangular fuzzy number, so that it is greater than k of convex fuzzy number M, where i = 1,2,..., k, can be defined . other as V(M > Mi,Wb,.... My) = V|(M > Mi)A(M > M»)A·--A(M > M)} = minV(M > Mi). Summing; everything; up yields ...
    ... (4i),C(A>),...,“ (An)T) where A4;(i= 1,2,...,n). 1416 M. Čelebić, S. Bajić, D. Bajić et al. Step 5. The final weights are calculated applying; a matrix algebra approach, namely the additive normalization method [11]. 'The result is a normalized weight priority vector in the form of a non-fuzzy ...
    ... comparing, decisions. The proposed method makes use of a logical approach of the expert to create a problem hierarchy (objective > criteria > alternatives). A special application, Fuzzy-GQWOS, has been developed to facilitate decision making with a fuzzy optimization model. Scores are entered and pairs ...