Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Slama, A." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-9 z 9
    Tytuł:
    Existence and controllability results for Sobolev-type fractional impulsive stochastic differential equations with infinite delay
    Autorzy:
    Boudaoui, A.
    Slama, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/357775.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    fractional impulsive stochastic differential equations
    fixed point principle
    controllability
    mild solution
    równania różniczkowe stochastyczne
    równania różniczkowe ułamkowe
    zasada punktu stałego
    sterowalność
    Opis:
    In this paper, we prove the existence of mild solutions for Sobolev-type fractional impulsive stochastic di erential equations with in nite delay in Hilbert spaces. In addition, the controllability of the system with nonlocal conditions and in nite delay is studied. An example is provided to illustrate the obtained theory.
    Źródło:
    Journal of Mathematics and Applications; 2017, 40; 37-58
    1733-6775
    2300-9926
    Pojawia się w:
    Journal of Mathematics and Applications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Statistical Features and Multilayer Neural Network to Automatic Diagnosis of Arrhythmia by ECG Signals
    Autorzy:
    Slama, A. B.
    Lentka, Ł.
    Mouelhi, A.
    Diouani, M. F.
    Sayadi, M.
    Smulko, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/221289.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Multilayer Neural Network
    arrhythmia diagnosis
    ECG signal processing
    Principal Component Analysis
    Fisher’s Linear Discriminant
    Opis:
    Abnormal electrical activity of heart can produce a cardiac arrhythmia. The electrocardiogram (ECG) is a non-invasive technique which is used as a diagnostic tool for cardiac diseases. Non-stationarity and irregularity of heartbeat signal imposes many difficulties to clinicians (e.g., in the case of myocardial infarction arrhythmia). Fortunately, signal processing algorithms can expose hidden information within ECG signal contaminated by additive noise components. This paper explores a method of de-noising ECG signal by the discrete wavelet transform (DWT) and further detecting arrhythmia by estimated statistical parameters. Parameters of the de-noised ECG signals were used to form an input data vector determining whether the examined patient suffers from a cardiac arrhythmia or not. Input data were transformed using selected linear methods in order to reduce dimension of the input vector. A neural network was used to detect illness. Compared with the results of recent studies, the proposed method provides more accurate diagnosis based on the examined ECG signal data.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 1; 87-101
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Filler Mixture Ratio on Permeability of Multicomponent Soft Magnetic Composites
    Autorzy:
    Dosoudil, R.
    Ušáková, M.
    Grusková, A.
    Sláma, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1202349.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Gg
    75.50.Bb
    76.50.+g
    75.78.-n
    72.80.Tm
    Opis:
    Composites with hybrid LiZnTi ferrite/FeSiAl alloy filler and PVC polymer matrix were synthesized by thermal pressing process. The influence of the mixture ratio of hybrid filler on the frequency dispersion of complex permeability of the composites has been studied. The dispersion of permeability varied from resonance type to relaxation one with the configuration change from LiZnTi/PVC composite to FeSiAl/PVC one and was mainly due to the magnetic resonance phenomena such as domain wall and spin precession resonance and due to the eddy current effect.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 404-405
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of Magnetic and Structural Properties of Sr Ferrite Prepared by Low-Temperature Combustion
    Autorzy:
    Grusková, A.
    Jančárik, V.
    Sláma, J.
    Ušáková, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813884.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    75.50.Ww
    74.25.Ha
    33.45.+x
    Opis:
    Fine strontium hexaferrite particles were prepared by the low temperature auto-combustion method. Aqueous solution of the corresponding metal salts and a combustible co-reactant compound - glycine were used as initial precursor. The resulting powders were calcined at various temperatures from 750°C up to 1100°C. The microstructure and magnetic properties were investigated by the Mössbauer spectroscopy, thermomagnetic analysis, scanning electron microscopy, and vibrating magnetometer. The particles of sizes less than 1 μm have monophasic hexagonal structure. Coercivity $H_c$≈400 kA/m, specific saturation polarization $J_{s-m} ≈ 72×10^{-6} Tm^3 kg^{-1}$ and remanence polarization $J_{s-r} ≈ 43×10^{-6} T m^3 kg^{-1}$ were achieved for the Sr ferrite annealed at 850°C for 6 h.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 557-560
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Complex Permeability of LiZn/MnZn/PVC Composite Materials
    Autorzy:
    Dosoudil, R.
    Ušáková, M.
    Grusková, A.
    Sláma, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1535468.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.80.Tm
    75.50.Gg
    76.50.+g
    Opis:
    The effect of particle content, size, and the fraction ratio of the double LiZn/MnZn ferrite filler in hybrid LiZn/MnZn/PVC composites on the frequency dispersion of complex permeability has been studied in the 1 MHz-3 GHz frequency range. The obtained relaxation type of permeability dispersion is due to the domain wall resonance, the natural ferromagnetic resonance, and the relaxation of magnetization rotation. The permeability and resonance/relaxation frequency of composites seem to be strongly affected by the change of particle content and fraction ratio of the double ferrite filler rather than by particle size.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 1049-1050
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Frequency Variation of Complex Permeability in Dual Ferrite Filler - Single Polymeric Matrix Composites
    Autorzy:
    Dosoudil, R.
    Ušáková, M.
    Sláma, J.
    Grusková, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813959.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.80.Tm
    75.50.Gg
    76.50.+g
    Opis:
    The frequency dependences of complex initial permeability for triple-component composite materials based on two different types of ferrite filler (MnZn and NiZn ferrite) and a nonmagnetic polymeric matrix (PVC) were studied in the frequency range of 10 kHz-1 GHz. The frequency dispersion of permeability is discussed by means of a dynamic model based on the superposition of the two types of magnetic resonance, the resonance of vibrating domain walls and the resonance of precessing magnetic moments in domains.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 621-624
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Properties of Divalent (Ni,Sn,Zn)- Tetravalent (Ru,Sn) Ionic Mixtures of Substituted Ba Ferrite
    Autorzy:
    Sláma, J.
    Grusková, A.
    González Angeles, A.
    Šoka, M.
    Dosoudil, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1367766.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Gg
    75.50.Vv
    77.22.Ej
    Opis:
    The drop of coercivity, while preserving the saturation magnetic polarisation $J_{S}$ of substituted M-type Ba hexaferrites with composition $BaFe_{12-2x}(Me_{1}Me_{2})_{x}O_{19}$, was studied. Divalent $Me_{1}$=Ni, Zn, Sn and tetravalent $Me_{2}$=Ru, Sn ionic combinations were used in various compounds. Mössbauer spectroscopy was used to reveal sites of replacement of the $Fe^{3+}$ ions by $Ru^{4+}$ and $Sn^{4+}$. The $Ni^{2+}$, $Zn^{2+}$ and $Sn^{2+}$ occupation sites were identified as well. Strong drop of coercivity difference Δ $H_{c}(x)$ near x=0.1 and slight decrease of Δ $H_{c}(x)$ close to x=0.3 was obtained for suitable coupling of $Me_{1}^{2+}$ and $Me_{2}^{4+}$ ions.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 172-173
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electromagnetic Properties of Substituted Barium Hexaferrites
    Autorzy:
    Sláma, J.
    Grusková, A.
    Jančárik, V.
    Štofka, M.
    González-Angeles, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813950.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    75.50.Vv
    81.20.Ev
    81.20.Ka
    Opis:
    Substituted M-type ferrite $BaFe_{12-2x}(Me_1Me_2)_xO_{19}$, 0≤x≤0.6 was prepared by both mechanical alloying and precursor method, where $Me_1$ = Co, Ni, Zn, Sn and $Me_2$ =Ru, Ti, Zr, Sn. Magnetic phase purity, change of saturation polarization, Curie temperature, coercivity and magnetic susceptibility was studied as function of x. Attention was focused to results obtained for $(NiRu)_x,$ $(ZnRu)_x,$ and $(SnRu)_x$ mixtures with low doping ratio x.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 609-612
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Magnetic and Structural Properties of Non-Stoichiometric NiZn Ferrites Prepared by Wet Method
    Autorzy:
    Grusková, A.
    Sláma, J.
    Ušáková, M.
    Šoka, M.
    Dosoudil, R.
    Degmová, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1507192.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Gg
    75.30.Cr
    75.30.-m
    82.80.Ej
    Opis:
    An iron-deficient $(Ni_{0.33}Zn_{0.67})_{1 + x}Fe_{2 - x}O_4$ and stoichiometric $Ni_{0.45}Zn_{0.55}Fe_2O_4$ prepared by a wet method were studied using the Mössbauer spectroscopy and thermomagnetic measurements. For the iron-deficient sample the $T_{C}$ is twice as large and the temperature coefficient of initial permeability is two orders of magnitude lower in comparison with the stoichiometric samples. The results are supplemented by the frequency dependence of the complex permeability.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 780-781
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies