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Wyszukujesz frazę "Stojanović, I." wg kryterium: Autor

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    Wyświetlanie 1-9 z 9
    Tytuł:
    Application of the partitioning method to specific Toeplitz matrices
    Autorzy:
    Stanimirović, P.
    Miladinović, M.
    Stojanović, I.
    Miljković, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/330588.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    Moore-Penrose inverse
    partitioning method
    Toeplitz matrices
    MATLAB
    image restoration
    odwrotność Moore-Penrose
    metoda partycjonowania
    macierze Teoplitza
    odtworzenie obrazu
    Opis:
    We propose an adaptation of the partitioning method for determination of the Moore–Penrose inverse of a matrix augmented by a block-column matrix. A simplified implementation of the partitioning method on specific Toeplitz matrices is obtained. The idea for observing this type of Toeplitz matrices lies in the fact that they appear in the linear motion blur models in which blurring matrices (representing the convolution kernels) are known in advance. The advantage of the introduced method is a significant reduction in the computational time required to calculate the Moore–Penrose inverse of specific Toeplitz matrices of an arbitrary size. The method is implemented in MATLAB, and illustrative examples are presented.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 809-821
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Far-Infrared Study of DX-Like Centers in Pb$\text{}_{0.95}$Mn$\text{}_{0.05}$Te(Ga)
    Autorzy:
    Stojanović, D.
    Trajić, J.
    Hadžić, B.
    Romčević, M.
    Ivanchik, I. I.
    Khokhlov, D. R.
    Romčević, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047857.pdf
    Data publikacji:
    2007-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.28.+d
    78.20.-e
    63.20.Pw
    Opis:
    We present far-infrared reflection spectra of Pb$\text{}_{0.95}$Mn$\text{}_{0.05}$Te single crystal doped with gallium between 10 and 300 K. The analysis of the far-infrared reflection spectra was made by a fitting procedure based on the model of coupled oscillators. Together with the strong plasmon-phonon coupling we obtain three local modes of gallium at about 122 cm$\text{}^{-1}$, 166 cm$\text{}^{-1}$, and 192 cm$\text{}^{-1}$. The position of these modes depends on impurity center charge, and their intensity depends on temperature.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 5; 959-962
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An investigation of the suspension characteristics of the line model of the vehicle using the Taguchi method
    Autorzy:
    Stojanovic, Nadica
    Jweeg, Muhsin Jaber
    Grujic, Ivan
    Petrovic, Miroslav
    Muhsen, Sami
    Abdullah, Oday I.
    Powiązania:
    https://bibliotekanauki.pl/articles/27312405.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    ANOVA
    dynamika pionowa
    układ zawieszenia
    vertical dynamics
    MATLAB/SIMULINK
    comfort
    Opis:
    It can be considered that the suspension system is one of the most important systems in the VEHICLE. Where it is responsible for the stability and balance of the vehicle’s structure on the roads and curves to ensure the comfort of passengers. Also, it absorbs the shocks resulting from the unevenness of the road and prevents it from reaching the wheelhouse. The influence of the suspension constructive parameters in order to obtain the smallest level of displacements of the sprung mass has been investigated. The following control parameters are the stiffness of the sprung, unsprung mass, and the damping of the sprung mass. The parameter which affects most displacements of the sprung mass was determined by applying the analysis of variance (ANOVA). The investigation was conducted using MATLAB/SIMULINK software, and a line model of a quarter of the vehicle was created. It was determined that the stiffness of sprung has the most significant influence on the displacement of the sprung-mass, which further affect the vehicle’s comfort.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2022, 27, 4; 170--178
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of postpartum administration of ketoprofen on proinflammatory cytokine concentration and their correlation with lipogenesis and ketogenesis in Holstein dairy cows
    Autorzy:
    Kovacevic, Z.
    Stojanovic, D.
    Cincovic, M.
    Belic, B.
    Davidov, I.
    Stojanac, N.
    Galfi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087477.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ketoprofen
    TNF-α
    IL-1α
    IFN-γ
    cow
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 3; 609-615
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Association of metabolic and inflammatory markers with milk yield in postpartum dairy cows treated with ketoprofen
    Autorzy:
    Kovacevic, Z.
    Stojanovic, D.
    Cincovic, M.
    Belic, B.
    Davidov, I.
    Plavsa, N.
    Radinovic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087713.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ketoprofen
    TNF-a
    haptoglobin
    NEFA
    BHB
    cow
    milk yield
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 2; 325-331
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Off label use of human approved drugs in treatment of dogs in the Republic of Serbia
    Autorzy:
    Tomanic, D.
    Stojanovic, D.
    Belić, B.
    Davidov, I.
    Novakov, N.
    Radinovic, M.
    Kladar, N.
    Kovacevic, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087106.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    off label use
    human drugs
    dogs
    cascade procedure
    antimicrobials
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 3; 399-407
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical and Magnetic Properties of PbTe(Ni)
    Autorzy:
    Romčević, N.
    Trajić, J.
    Romčević, M.
    Stojanović, D.
    Kuznetsova, T.
    Khokhlov, D.
    Dobrowolski, W.
    Rudolf, R.
    Anžel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808059.pdf
    Data publikacji:
    2009-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    63.20.-e
    63.20.Kr
    78.30.-j
    Opis:
    Far-infrared and magnetic properties of Ni doped PbTe ($Z_Ni$ = 1× $10^{19}$ at./$cm^{3}$) single crystal are investigated in a broad range of temperature and magnetic fields. Far-infrared reflection spectra were analyzed using a fitting procedure based on the modified plasmon-two phonon interaction model. Together with the strong plasmon-two longitudinal optical phonon coupling we obtained a local mode of Ni at about 180 $cm^{-1}$. This mode intensity depends on temperature. Magnetic measurements shows that PbTe alloys doped with Ni reveals weak ferromagnetic interaction between magnetic ions.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 4; 805-807
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Raman Spectroscopy of Multiphonon Emission Process in Ni-Doped PbTe
    Autorzy:
    Romčević, N.
    Trajić, J.
    Hadžić, B.
    Romčević, M.
    Stojanović, D.
    Lazarević, Z.
    Kuznetsova, T.
    Khokhlov, D.
    Rudolf, R.
    Anžel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807841.pdf
    Data publikacji:
    2009-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.28.+d
    63.20.-e
    78.30.-j
    Opis:
    In this paper, we present room temperature unpolarized Raman scattering spectra of Ni doped PbTe single crystal sample. Crystal of PbTe(Ni) was grown by the Bridgman method. The Ni concentration in the sample used here was 1× $10^{19}$ at./$cm^{3}$. Well resolved peaks appear at about 126, 143, 181, 362 and 724 $cm^{-1}$. The modes at 126 and 143 $cm^{-1}$, which are also observed in other telluride compounds, originate from vibrations in $TeO_2$. We assume that the mode at about 181 $cm^{-1}$ is connected to excitations of a local phonon mode in the vicinity of an impurity atom (donor $Ni^{3+}$ state). Modes at about 362 $cm^{-1}$ and 724 $cm^{-1}$ are the second and fourth harmonic of a local phonon mode, registered here due to multiphonon emission.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 1; 91-92
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Organic geochemical study of the Lower Miocene Kremna Basin, Serbia
    Autorzy:
    Perunović, T.
    Stojanović, K.
    Simić, V.
    Kašanin-Grubin, M.
    Šajnović, A.
    Erić, V.
    Schwarzbauer, J.
    Vasić, N.
    Jovančićević, B.
    Brčeski, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/191854.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Kremna Basin
    lacustrine sediments
    organic matter
    mineralogy
    biomarkers
    pyrolysis
    Opis:
    The Kremna Basin is located in southwest Serbia, in the Zlatibor area, which is part of the Internal Dinarides. This basin is noteworthy because of the type of bedrock drainage, which it represents. It was formed on ultrabasic rocks and volcanic materials that influenced the occurrence of organic matter (OM) in the basin fill. The objective of the study was to determine the organic geochemical characteristics of sediments from the central part of the Kremna Basin. The sediments studied belong to an intrabasinal facies, in which two sequences were distinguished. The lower sequence occurs at depths of 216–343 m, while the upper sequence is found from 13.5–216 m. At the start of basin development (265–343 m) sedimentation took place in shallow alkaline water, rich in Mg ions. Through time, a slight deepening of the basin occurred. This was followed by chemical deposition of carbonates (216–265 m). The most important change in the sedimentary environment occurred with the formation of sediments marking the transition between the sequences (at about 200 m). Sediments from the lower sequence are characterized by the dominance of dolomite and magnesite. There are indications of volcanic activity, i.e. tuff layers and the presence of searlesite. The upper sequence is characterized by the prevalence of calcite and dolomite. The amounts of MgO, Na2O and B are higher in the lower sequence, whereas the CaO content is higher in the upper sequence. The sediments contain different amounts of immature OM (late diagenesis). Biomarker analysis shows diverse precursors of the sedimentary OM: methanogenic archaea, photosynthetic green sulfur bacteria (Chlorobiaceae), bacterivorous ciliates, various bacteria, both photosynthetic and non-photosynthetic, the green unicellular microalga, Botryococcus braunii race A (exclusively in the upper sequence) and terrestrial plants. The lower sequence contains lower amount OM, composed primarily of kerogen II/III and III types, indicating a higher contribution of the allochtonous biomass of land plants from the lake catchment, particularly in the lower part. The sediments of the upper sequence are enriched in autochthonous aquatic OM, which comprises mostly kerogen I, I/II and II types. The transition from the lower sequence to the upper one is associated with a decrease in pristane to phytane ratio, gammacerane index and content of C28 steroids, absence or significantly lower amount of squalane, absence of C24 and C25 regular isoprenoids, 8-methyl-2-methyl-2-(4,8,12-trimethyltridecyl) chroman and C30 hop-17(21)-ene. Pyrolytic experiments showed that the sediments of the upper sequence, rich in aquatic OM, at a catagenetic stage could be a source of liquid hydrocarbons. The values of hopane, sterane and phenanthrene maturation parameters indicate that through pyrolysis at 400°C the samples investigated reached a value of vitrinite reflectance equivalent of approximately 0.70%. It was estimated that the sediments should be found at depths of 2300–2900 m in order to become active source rocks. The calculated minimum temperature, necessary for catagenetic hydrocarbon generation, is between 103 and 107°C.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2014, 84, 3; 185-212
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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