Results 31 to 40 of about 133 (130)

STABILITY OF FACTORIZATION FACTORS OF WIENER–HOPF FACTORIZATION OF MATRIX FUNCTION

Bulletin of the South Ural State University series "Mathematics. Mechanics. Physics", 2022
We consider the Wiener–Hopf factorization of two matrix functions A(t) and B(t) that are quite close in the norm of the Wiener algebra. The aim of this work is to study the question when the factorization factors of A(t), B(t) will be close enough to each other.
openaire   +1 more source

Clutter rank estimation for the multistage Wiener filter

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
The authors propose an algorithm that determines the rank of the sea clutter and relates it to the number of stages in the multistage Wiener filter. The algorithm presented is formulated as a model order estimation problem that utilises the minimum description length (MDL).
Rachel Gray, Elias Aboutanios, Luke Rosenberg, Josef Zuk   +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

Solving Wiener–Hopf problems without kernel factorization [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
A new approach to solving problems of Wiener–Hopf type is expounded by showing its implementation in two concrete and typical examples from fluid mechanics. The new method adapts mathematical ideas underlying the so-called unified transform method due to A. S. Fokas and collaborators in recent years. The method has the key advantage of avoiding what is
Darren G. Crowdy, Elena Luca
openaire   +1 more source

Evaluating the influence of marine protected areas on surf zone fish

Conservation Biology, Volume 38, Issue 6, December 2024.
Abstract Marine protected areas (MPAs) globally serve conservation and fisheries management goals, generating positive effects in some marine ecosystems. Surf zones and sandy beaches, critical ecotones bridging land and sea, play a pivotal role in the life cycles of numerous fish species and serve as prime areas for subsistence and recreational fishing.
M. L. Marraffini, S. L. Hamilton, J. R. Marin Jarrin, M. Ladd, G. Koval, J. R. Madden, I. Mangino, L. M. Parker, K. A. Emery, K. Terhaar, D. M. Hubbard, R. J. Miller, J. E. Dugan   +12 more
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

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

Response Analysis of Projectile System Under Gaussian Noise Excitation Using Path Integral Method

International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
During flight, projectiles are subject to uncertainties such as aerodynamic forces, wind gusts, and measurement errors; all of which significantly affect their stability and accuracy. As a result, studying the response of projectile systems under stochastic excitation is essential.
Liang Wang, Xinyi Li, Jiahui Peng, Zhonghua Zhang, Shuangqi Dong, Tuo Han   +5 more
wiley   +1 more source