Results 61 to 70 of about 27,119 (279)

On an Anisotropic Logistic Equation

open access: yesMathematics
We consider a nonlinear Dirichlet problem driven by the (p(z),q)-Laplacian and with a logistic reaction of the equidiffusive type. Under a nonlinearity condition on a quotient map, we show existence and uniqueness of positive solutions and the result is ...
Leszek Gasiński   +1 more
doaj   +1 more source

On the uniqueness for weak solutions of steady double-phase fluids

open access: yesAdvances in Nonlinear Analysis, 2021
We consider a double-phase non-Newtonian fluid, described by a stress tensor which is the sum of a p-Stokes and a q-Stokes stress tensor, with 1 
Abdelwahed Mohamed   +2 more
doaj   +1 more source

Hybrid regularizers-based adaptive anisotropic diffusion for image denoising [PDF]

open access: yesSpringerPlus, 2016
To eliminate the staircasing effect for total variation filter and synchronously avoid the edges blurring for fourth-order PDE filter, a hybrid regularizers-based adaptive anisotropic diffusion is proposed for image denoising. In the proposed model, the [Formula: see text]-norm is considered as the fidelity term and the regularization term is composed ...
Liu, Kui, Tan, Jieqing, Ai, Liefu
openaire   +2 more sources

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

open access: yesAdvanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono   +6 more
wiley   +1 more source

Anisotropic nonlinear elliptic systems with measure data and anisotropic harmonic maps into spheres

open access: yesElectronic Journal of Differential Equations, 2006
We prove existence results for distributional solutions of anisotropic nonlinear elliptic systems with a measure valued right-hand side. The functional setting involves anisotropic Sobolev spaces as well as weak Lebesgue (Marcinkiewicz) spaces. In a
Mostafa Bendahmane, Kenneth H. Karlsen
doaj  

Positive solutions for nonparametric anisotropic singular solutions [PDF]

open access: yesOpuscula Mathematica
We consider an elliptic equation driven by a nonlinear, nonhomogeneous differential operator with nonstandard growth. The reaction has the combined effects of a singular term and of a "superlinear" perturbation.
Nikolaos S. Papageorgiou   +2 more
doaj   +1 more source

High‐Resolution and Real‐Time In Situ Generation of Cellular Spheroids by Laser‐Assisted Bioprinting for Guided Microvascularization

open access: yesAdvanced Functional Materials, EarlyView.
Micro‐injection laser‐assisted bioprinting enables ultrafast and precise patterning of small endothelial cell spheroids by injecting a highly concentrated single‐cell suspension into GelMA/ColMA hydrogels. In co‐culture with fibroblasts, controlled pre‐vasculogenic network formation is obtained at microscale resolution.
Charles Handschin   +9 more
wiley   +1 more source

Analysis of Charged Compact Stars in Modified Gravity

open access: yes, 2018
Current study highlights the physical characteristics of charged anisotropic compact stars by exploring some exact solutions of modified field equations in $f(R,G)$ gravity.
Shamir, M. Farasat, Zia, Saeeda
core   +1 more source

H��lder regularity for anisotropic $p$-Laplace equation

open access: yes, 2021
The result holds under Assumption 1 which has been added.
openaire   +2 more sources

Time-delay regularization of anisotropic diffusion and image processing [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2005
Summary: We study a time-delay regularization of the anisotropic diffusion model for image denoising of \textit{P. Perona} and \textit{J. Malik} [IEEE Trans. Pattern Anal. Mach. Intell. 12, 629--639 (1990)], which has been proposed by \textit{M. Nitzberg} and \textit{T. Shiota} [IEEE Trans. Pattern Anal. Mach. Intell. 14, 826--835 (1998)].
Chambolle, Antonin   +1 more
openaire   +2 more sources

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