Results 21 to 30 of about 190 (139)

Diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading: The case of E polarisation

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
The diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading is rigorously analysed for the E‐polarised case using the Wiener–Hopf technique. Numerical computations of the radar cross‐section have been performed for different physical parameters, providing a detailed analysis of the scattering characteristics ...
Tong Zhang, Kazuya Kobayashi
wiley   +1 more source

Plane Wave Diffraction by a Finite Parallel‐Plate Waveguide Cavity With Perfect Electric Conductor Loading: The Case of H Polarization

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
This paper investigates H‐polarised wave diffraction by a finite parallel‐plate waveguide cavity using the Wiener–Hopf technique, and numerical results are presented to illustrate the scattering characteristics under various conditions. ABSTRACT This work presents a rigorous analysis of H‐polarised wave diffraction by a finite parallel‐plate waveguide ...
Tong Zhang, Kazuya Kobayashi
wiley   +1 more source

Singular Integral Equations of Convolution Type With Carleman Shift

Abstract and Applied Analysis, Volume 2025, Issue 1, 2025.
This article discusses a few different types of singular integral equations of the convolution type with Carleman shift in class {0}. By using the theory of Fourier analysis, these equations under consideration are transformed into Riemann–Hilbert boundary value problems for analytic functions with shift and discontinuous coefficients.
A. S. Nagdy, KH. M. Hashem, H. E. H. Ebrahim, Mohammad Safi Ullah   +3 more
wiley   +1 more source

Distributed Control for Mittag–Leffler Synchronization of Variable‐Order Fractional Gierer–Meinhardt Reaction‐Diffusion Systems

Journal of Mathematics, Volume 2025, Issue 1, 2025.
This paper investigates Mittag–Leffler synchronization (MLSY) for variable‐order fractional Gierer–Meinhardt reaction‐diffusion systems (VFO‐GM‐RDs). We introduce, for the first time, a distributed control scheme specifically designed to achieve MLSY in these complex systems. A key contribution is the derivation of an explicit analytical expression for
Osama Ogilat, Iqbal H. Jebril, Iqbal M. Batiha, Nidal Anakira, Tala Sasa, Yongqiang Fu   +5 more
wiley   +1 more source

Plane wave diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading: The case of H polarisation

IET Microwaves, Antennas &Propagation, Volume 18, Issue 12, Page 1055-1068, December 2024.
The analysis of diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading is rigorously carried out using the Wiener–Hopf technique for the H‐polarised plane wave incidence. The authors present representative numerical examples of the radar cross section for various physical parameters and discuss the far‐field scattering ...
Tong Zhang, Kazuya Kobayashi
wiley   +1 more source

Mechanical loading reveals an intrinsic cardiomyocyte stiffness contribution to diastolic dysfunction in murine cardiometabolic disease

The Journal of Physiology, Volume 602, Issue 24, Page 6705-6727, 15 December 2024.
Abstract figure legend Understanding cardiomyocyte stiffness components is an important priority for identifying new therapeutics for diastolic dysfunction, a key feature of cardiometabolic disease. In this study cardiac function was measured in vivo (echocardiography) for mice fed a high‐fat/sugar diet (HFSD, ≥25 weeks). Performance of intact isolated
Johannes V. Janssens, Antonia J. A. Raaijmakers, Parisa Koutsifeli, Kate L. Weeks, James R. Bell, Jennifer E. Van Eyk, Claire L. Curl, Kimberley M. Mellor, Lea M. D. Delbridge   +8 more
wiley   +1 more source

The uniqueness of the Wiener–Hopf factorisation of Lévy processes and random walks

Bulletin of the London Mathematical Society, Volume 56, Issue 9, Page 2951-2968, September 2024.
Abstract We prove that the spatial Wiener–Hopf factorisation of a Lévy process or random walk without killing is unique.
Leif Döring, Mladen Savov, Lukas Trottner, Alexander R. Watson   +3 more
wiley   +1 more source

Long‐time existence of Brownian motion on configurations of two landmarks

Bulletin of the London Mathematical Society, Volume 56, Issue 5, Page 1658-1679, May 2024.
Abstract We study Brownian motion on the space of distinct landmarks in Rd$\mathbb {R}^d$, considered as a homogeneous space with a Riemannian metric inherited from a right‐invariant metric on the diffeomorphism group. As of yet, there is no proof of long‐time existence of this process, despite its fundamental importance in statistical shape analysis ...
Karen Habermann, Philipp Harms, Stefan Sommer   +2 more
wiley   +1 more source

Bott‐integrable Reeb flows on 3‐manifolds

Journal of the London Mathematical Society, Volume 109, Issue 1, January 2024.
Abstract This paper is devoted to studying a notion of Bott integrability for Reeb flows on contact 3‐manifolds. We show, in analogy with work of Fomenko–Zieschang on Hamiltonian flows in dimension 4, that Bott‐integrable Reeb flows exist precisely on graph manifolds.
Hansjörg Geiges, Jakob Hedicke, Murat Sağlam   +2 more
wiley   +1 more source

The Solvability and Explicit Solutions of Singular Integral–Differential Equations with Reflection

Abstract and Applied Analysis, Volume 2024, Issue 1, 2024.
This article deals with a classes of singular integral–differential equations with convolution kernel and reflection. By means of the theory of boundary value problems of analytic functions and the theory of Fourier analysis, such equations can be transformed into Riemann boundary value problems (i.e., Riemann–Hilbert problems) with nodes and ...
A. S. Nagdy, KH. M. Hashem, H. E. H. Ebrahim, Paul Eloe   +3 more
wiley   +1 more source