Showing 81 - 100 results of 620 for search '"Bessel function"', query time: 0.27s Refine Results
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    Microwave imaging through a mode-matching bessel functions procedure by Ghavami, N, Tiberi, G, Edwards, D, Monorchio, A

    Published 2013
    “…The procedure exploits the use of Bessel functions mode-matching approach for the identification of the presence and location of significant scatterers inside cylindrically shaped objects. …”
    Journal article
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    Dielectric Metalens for Superoscillatory Focusing Based on High-Order Angular Bessel Function by Yu Li, Xinhao Fan, Yunfeng Huang, Xuyue Guo, Liang Zhou, Peng Li, Jianlin Zhao

    Published 2022-10-01
    “…In this paper, we propose a dielectric metalens for superoscillatory focusing based on the diffraction of angular Bessel functional phase modulated vector field, under the inspiration of the tightly autofocusing property of a radially polarized high-order Bessel beam. …”
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    Article
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    Use of pade aproximation for e-z to approximate an integral of a Bessel function by Yudell Luke

    Published 2011-03-01
    “…We desire approximations to evaluate functions and their zeros, to simplify transforms and their inverses, and to facilitate the direct solution of various functional Equations, In this paper, we illustrate our ideas by using Padé approximations for the exponential function to evaluate integral involving the Bessel function I0(z) …”
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    Article
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    A Mode Matching - Bessel functions based approach for UWB Microwave Imaging by Tiberi, G, Ghavami, N, Edwards, D, Monorchio, A, IEEE

    Published 2010
    “…The method is based on a mode-matching (MM) procedure of Bessel functions, and it enables the presence and location of significant scatterers within an illuminated volume to be identified. …”
    Conference item
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    New Sharp Bounds for the Modified Bessel Function of the First Kind and Toader-Qi Mean by Zhen-Hang Yang, Jing-Feng Tian, Ya-Ru Zhu

    Published 2020-06-01
    Subjects: “…modified Bessel function of the first kind…”
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    Article
  17. 97

    Fractional kinetic equations involving generalized k-Bessel function via Sumudu transform by P. Agarwal, S.K. Ntouyas, S. Jain, M. Chand, G. Singh

    Published 2018-09-01
    “…Keywords: Fractional kinetic equation, Sumudu transforms, Laplace transforms, Generalized k-Bessel function, Mittag-Leffler function…”
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    Article
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    Monotonicity and complete monotonicity of some functions involving the modified Bessel functions of the second kind by Mao, Zhong-Xuan, Tian, Jing-Feng

    Published 2023-01-01
    “…Furthermore, we demonstrate that the function $-T_{\nu ,\alpha ,\beta }(s)$ is completely monotonic in $s$ and absolutely monotonic in $\nu $ if and only if $\beta \ge 1$, where $T_{\nu ,\alpha ,\beta }(s)=K_{\nu }^2(s)-\beta K_{\nu -\alpha }(s)K_{\nu +\alpha }(s)$ defined on $s>0$ and $K_{\nu }(s)$ is the modified Bessel function of the second kind of order $\nu $. Finally, we determine the necessary and sufficient conditions for the functions $s \mapsto T_{\mu ,\alpha ,1}(s)/T_{\nu ,\alpha ,1}(s)$, $s \mapsto (T_{\mu ,\alpha ,1}(s) + T_{\nu ,\alpha ,1}(s))/(2T_{(\mu +\nu )/2,\alpha ,1}(s))$, and $s \mapsto \frac{\mathrm{d}^{n_1}}{\mathrm{d} \nu ^{n_1}} T_{\nu ,\alpha ,1}(s)/\frac{\mathrm{d}^{n_2}}{\mathrm{d} \nu ^{n_2}} T_{\nu ,\alpha ,1}(s)$ to be monotonic in $s\in (0,\infty )$ by employing the monotonicity rules.…”
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    Article