Results 61 to 70 of about 2,277 (262)

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

open access: yesAdvanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu   +5 more
wiley   +1 more source

Existence results for nonlinear fourth-order elliptic boundary value problems

open access: yesJournal of Inequalities and Applications
This paper is concerned with the existence of a solution of the nonlinear fourth-order elliptic boundary value problem { Δ 2 u = f ( x , u , Δ u ) , x ∈ Ω , u = Δ u = 0 , x ∈ ∂ Ω , $$ \left \{ \textstyle\begin{array}{l} {\Delta }^{2} u = f(x,\,u,\,\Delta
Yongxiang Li, Yanyan Wang
doaj   +1 more source

Multiplicity of positive solutions to semilinear elliptic boundary value problems

open access: yesAbstract and Applied Analysis, 1999
We study semilinear elliptic boundary value problems of one parameter dependence where the number of positive solutions is discussed. Our main purpose is to characterize the critical value given by the infimum of such parameters for which positive ...
Kenichiro Umezu
doaj   +1 more source

On Boundary Value Problems for Elliptic Equations Degenerating on the Boundary

open access: yesPublications of the Research Institute for Mathematical Sciences, 1971
in SCR", where & is an interior or, an exterior of a smooth 'and compact hypersurface, A is a complex number and p(x) is a realvalued function satisfying (1) p(#) is continuous and ...
openaire   +2 more sources

Non‐Hermitian Stealthy Hyperuniformity

open access: yesAdvanced Science, EarlyView.
A framework for non‐Hermitian extensions of hyperuniformity and stealthiness is proposed, generalizing PT‐symmetric gain‐loss crystals to correlated disorder in the weak‐scattering limit. By engineering real‐imaginary correlations of the material potential, this framework enables directional scattering phases inaccessible in Hermitian materials ...
Gitae Lee   +8 more
wiley   +1 more source

On the problem of determining the parameter of an elliptic equation in a Banach space

open access: yesNonlinear Analysis, 2014
The boundary value problem of determining the parameter of an elliptic equation -u''(t)+Au(t)=f(t)+p (0⩽t⩽T), u(0)=φ, u(T)=ψ, u(λ)=ξ ...
Allaberen Ashyralyev   +1 more
doaj   +1 more source

On solution uniqueness of elliptic boundary value problems

open access: yesJournal of Computational and Applied Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zi-Cai Li   +3 more
openaire   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Existence results for singular anisotropic elliptic boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2000
We establish the existence of a positive solution for anisotropic singular quasilinear elliptic boundary-value problems. As an example of the problems studied we have $$ u^au_{xx}+u^bu_{yy}+lambda(u+1)^{a+r}=0 $$ with zero Dirichlet boundary condition ...
Eun Heui Kim
doaj  

Boundary Value Problems for Singular Elliptic Equations

open access: yesRocky Mountain Journal of Mathematics, 2011
Let \(\Omega\subset\mathbb R^N\) be a bounded domain with smooth boundary, \(a:\Omega\rightarrow [1,+\infty)\) a bounded function, \(h:[0,+\infty)\rightarrow\mathbb R\) continuous, and \(g:(0,+\infty)\rightarrow\mathbb R\) a continuous function such that \(\lim_{s\rightarrow 0^+}g(s)=+\infty\). Fix \(p>1\).
Loc, Nguyen Hoang, Schmitt, Klaus
openaire   +2 more sources

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