Results 41 to 50 of about 7,827 (194)

The Effect of the Wall Thickness of the Material Loaded Cavity On the RCS Reduction

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi
In this paper, the effect of a parallel plate waveguide's wall thickness on radar cross-section reduction (RCS) is rigorously analyzed for H-polarization by using the Wiener-Hopf Technique, when the waveguide region is loaded with dielectric material and
Oğuzhan Demiryürek, Filiz Birbir Ünal
doaj   +1 more source

EXACT SOLUTION FOR THE CRACK EMANATING FROM THE TOP OF TWO DISSIMILAR WEDGES

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2019
In the framework of the antiplane problem, a closed connection of two different isotropic wedges is considered, from the top of which a finite-length crack emerges at an arbitrary angle to the axis of symmetry of the structure. By reducing the problem to
Tikhomirov Victor
doaj   +1 more source

The Dynamics of Fast and Slow Earthquake Ruptures in Viscoelastic Materials

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract Classical theories using linear elasticity predict that crack propagation asymptotically approaches a limiting speed, beyond which the energy balance becomes unphysical. However, geophysical and laboratory observations show that ruptures can propagate at either a very low, stable speed or a significantly high speed.
Huihui Weng
wiley   +1 more source

On a Wiener-Hopf Integral Equation

open access: yesJournal of Integral Equations and Applications, 1995
The author considers the following problem: determine the positive sequence \(\{E_n\}\) satisfying the infinite discrete system \[ \sin \left( {\pi \over 4} + \theta \right) \sum_{n = 0}^\infty {E_n \over \beta_n - \theta} + \sin \left( {\pi \over 4} - \theta \right) \sum^\infty_{n = 0} {E_n \over \beta_n + \theta} = \sqrt 2 {\sin \theta \over \theta} \
openaire   +2 more sources

Two-Dimensional Quarter Space Problems in One-Speed Transport Theory [PDF]

open access: yes, 1971
Methods derived from the theory of several complex variables are used as a means of analyzing a class of two‐dimensional transport problems in a scattering and absorbing quarter space (0 ≤ x_1, 0 ≤ x_2, −∞ ≤ x_3 ≤ ∞) described by a linear, one‐speed ...
Leonard, A.
core   +1 more source

Quaternary stabilization of a GH2 β‐galactosidase from the psychrophile A. ikkensis, a flexible and unstable dimeric enzyme

open access: yesProtein Science, Volume 34, Issue 5, May 2025.
Abstract Studies of cold‐active enzymes may elucidate the basis for low‐temperature activity and contribute to their wider application in energy‐efficient processes. Here we investigate the cold‐active GH2 β‐galactosidase from the psychrophilic bacterium Alkalilactibacillus ikkensis (AiLac).
Jan S. Nowak   +9 more
wiley   +1 more source

Cooling of a plate with general boundary conditions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We consider steady state temperature distribution in a homogeneous rectangular infinite plate the lower part of which is cooled by a fluid flowing at a constant velocity while the upper part satisfies the general mixed boundary conditions.
F. D. Zaman, R. Al-Khairy
doaj   +1 more source

Internal Wave Diffraction by a Strip of an Elastic Plate on the Surface of a Stratified Fluid

open access: yesInternational Journal of Applied Mechanics and Engineering, 2013
The problem of internal wave diffraction by a strip of an elastic plate of finite width present on the surface of an exponentially stratified liquid is investigated in this paper.
P. Dolai, D.P. Dolai
doaj   +1 more source

On the Inhomogeneous Conservative Wiener–Hopf Equation

open access: yesSiberian Mathematical Journal, 2017
The paper deals with the inhomogeneous Wiener-Hopf equation of the form \[ z(x) = \int_{-\infty}^x z(x-y)F(dy) +f(x), \quad x>0. \tag{1} \] In (1), \(z\) is an unknown function, \(F\) is a given distribution and \(f\) is a known function. In this paper, the existence of a solution to (1) is proved in the case where the kernel is a probability ...
openaire   +1 more source

A trifurcated waveguide problem [PDF]

open access: yes, 1994
We consider the diffraction of the dominant wave mode which propagates out of the mouth of a semi-infinite waveguide made of a soft and hard half plane.
Rawlins, A D
core  

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