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    Wyświetlanie 1-3 z 3
    Tytuł:
    Parenting Styles as Predictors of Adolescents’ Self-Efficacy and Subjective Well-Being
    Autorzy:
    Pavicevic, Miljana S.
    Lj. Zivkovic, Tijana
    Powiązania:
    https://bibliotekanauki.pl/articles/1964323.pdf
    Data publikacji:
    2021-09-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    parenting styles
    adolescents
    mental health
    Opis:
    The aim of the research was to determine the predictive power of parenting styles in predicting subjective well-being and self-efficacy as aspects of adolescent mental health. The sample consisted of 270 students from four high schools in Serbia, aged 16 and 17. The research was conducted during March and April 2021, and research methods that were used are descriptive statistics, correlation analysis and regression analysis. The authoritative parental educational style contributes to the development of adolescents’ experience of self-efficacy and subjective well-being. Authoritative parents - through high warmth and control - provide the child with an optimal environment for development.
    Źródło:
    The New Educational Review; 2021, 65; 29-39
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Samarium-Doped Ceria Nanostructured Thin Films Grown on FTO Glass by Electrodepostion
    Autorzy:
    Živković, Lj.
    Lair, V.
    Lupan, O.
    Cassir, M.
    Ringuedé, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503528.pdf
    Data publikacji:
    2011-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.15.Pq
    68.55.Ln
    61.46.Km
    78.67.-n
    Opis:
    Electrical, optical or catalytic properties of ceria can be tuned via doping by rare earth elements. The innate properties of ceria-based materials can be further amplified by using nanostructured ceria. In this study, Sm-doped ceria (SDC) coatings were grown on the FTO glass substrate by means of cathodic deposition. Films were obtained from mixed $Sm^{3+}//Ce^{3+}$ aqueous nitrate solutions, applying -0.8V/(SCE) potential for 1 h. Selected conditions gave rise to adherent, homogeneous and well-covering nanostructured SDC thin films. EDX analysis showed that 0.8 and 1.5 mol% $Sm^{3+}$ led to 3.4 and 6.3 at.% Sm in the SDC films. XRD and Raman analysis confirmed the formation of cubic fluorite-type $CeO_{2}$. However, Sm-doping decreased the crystallite size of nanostructured ceria. The effect of annealing on SDC film was also studied. An improvement in crystallite quality was found with increasing temperature. Optical absorption properties were studied and the band gap value $(E_g)$ of 3.07 eV was determined for pure ceria. Sm-doped ceria exhibited a red shifting. The $E_g$ values were 2.97 and 2.81 eV, in due order.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 2; 298-302
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural Characterization and Statistical Properties of Two-Dimensional Granular Systems During the Compaction
    Autorzy:
    Živković, S.
    Jakšić, Z.
    Arsenović, D.
    Budinski-Petković, Lj.
    Vrhovac, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503325.pdf
    Data publikacji:
    2011-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    45.70.-n
    45.70.Cc
    81.05.Rm
    61.43.Bn
    Opis:
    We study the compaction dynamics of frictional hard disks in two dimensions, subjected to vertical shaking, by numerical simulation. Shaking is modeled by a series of vertical expansions of the disk packing, followed by dynamical recompression of the assembly under the action of gravity. The second phase of the shake cycle is based on an efficient event-driven molecular-dynamics algorithm. We analyze the compaction dynamics for various values of the friction coefficient and the coefficient of normal restitution. The granular organization at local level was studied by analyzing the shape factor ξ of the local volumes, associated with a natural way of subdividing the volume into local parts - the Voronoi partition. It gives a clear physical picture of the competition between less and more ordered domains of particles during the compaction. We calculate the distribution of the shape-factor for packings at different stages of the compaction process. We have also investigated a two-dimensional granular medium experimentally. We prepared the granular packings of metallic cylinders of diameters 4, 5, and 6 mm. The distributions of the shape-factor obtained numerically for various tapping intensities are consistent with our experimental results.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 2; 246-251
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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