Results 201 to 210 of about 13,240 (282)

Computing Effective Elastic Properties From Microtomographic Images: An Efficient 3D Digital Rock Workflow

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Digital rock physics (DRP), using high‐resolution 3D microtomographic rock images, is widely employed to predict elastic and transport properties of subsurface formations. Accurate microstructural characterization is often hindered by limited image resolution and overlapping grayscale values of minerals. Consequently, DRP simulations are often
Shib Sankar Ganguli   +3 more
wiley   +1 more source

A Unified Vector Electromagnetic Framework for Ionospheric Scintillation and Polarization Effects in GNSS

open access: yesRadio Science, Volume 61, Issue 6, June 2026.
Abstract The ionosphere imposes coupled amplitude, phase, and polarization distortions on trans‐ionospheric Global Navigation Satellite System (GNSS) signals, reflecting the structure and dynamics of electron‐density irregularities. Classical weak‐scatter theory provides a mature framework for interpreting amplitude and phase scintillation, but these ...
T. Durgonics, S. S. Beeck
wiley   +1 more source

Instability by Extension of an Elastic Nanorod. [PDF]

open access: yesNanomaterials (Basel)
Berecki A   +4 more
europepmc   +1 more source

A Theory of the Boundaries of Banks With Implications for Financial Integration and Regulation

open access: yesFinancial Management, Volume 55, Issue 2, Page 209-228, Summer 2026.
ABSTRACT We offer a theory of the “boundary of the firm” that is tailored to banks, recognizing the relevance of deposit financing and interbank lending as a substitute for integration. It is based on a single inefficiency that has been at the core of banking theory: risk‐shifting incentives in the interest of bank shareholders.
Falko Fecht   +2 more
wiley   +1 more source

Multiplicity of nonnegative solutions for semilinear Robin problems involving sign‐changing nonlinearities

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.
Abstract In this article, we investigate the existence and multiplicity of solutions to the Robin problem −Δu=λf(u)inΩ,∂u∂ν+γu=0on∂Ω,$$\begin{equation*} {\begin{cases} -\Delta u = \lambda f(u) & \text{in } \Omega,\\ \frac{\partial u}{\partial \nu } + \gamma u=0 & \text{on } \partial \Omega, \end{cases}} \end{equation*}$$where Ω⊂RN$\Omega \subset ...
José Carmona Tapia   +2 more
wiley   +1 more source

Rigidity of balls in the solid mean value property for polyharmonic functions

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.
Abstract We show that balls are the only open bounded domains for which the mean value formula for polyharmonic functions holds. We do so by adapting an argument of Ü. Kuran for harmonic functions. We also, provide a quantitative version of the same result.
Nicola Abatangelo
wiley   +1 more source

Freeform Mode-Engineered Metasurfaces. [PDF]

open access: yesNano Lett
Jiang Z   +8 more
europepmc   +1 more source

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