Results 101 to 110 of about 390 (267)

Commutators of Singular Integral Operators Satisfying a Variant of a Lipschitz Condition

The Scientific World Journal, 2014
Let T be a singular integral operator with its kernel satisfying |K(x-y)-∑k=1ℓ‍Bk(x)ϕk(y)|≤C|y|γ/|x-y|n+γ, |x|>2|y|>0, where Bk and ϕk  (k=1,…,ℓ) are appropriate functions and γ and C are positive constants.
Pu Zhang, Daiqing Zhang
doaj   +1 more source

Quadratic Sparse Domination and Weighted Estimates for Non-integral Square Functions. [PDF]

J Geom Anal, 2023
Bailey J, Brocchi G, Reguera MC.
europepmc   +1 more source

Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control

Advanced Optical Materials, EarlyView.
This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley   +1 more source

Helicity‐Dependent All‐Optical Switching in Bi,Ga‐Substituted Rare‐Earth Iron Garnet Films Driven by Orbital Magnetic Moment

Advanced Optical Materials, EarlyView.
Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata, Ryuichiro Asatani, Saiki Suzuki, Md Abdullah Al Masud, Hotaka Sakaguchi, Jun Okabayashi, Shinji Isogami, Takayuki Ishibashi   +7 more
wiley   +1 more source

Boundedness estimates of commutators on weighted Hardy-type spaces(交换子在加权Hardy型空间上的有界性估计)

Zhejiang Daxue xuebao. Lixue ban
The theory of pseudodifferential operator commutators is an important tool in the study of the well-posedness of solutions problems of partial differential equations.
DENG Yulong(邓宇龙), JIANG Yijing(蒋依静)   +1 more
doaj   +1 more source

Inverse‐Designed Superchiral Hot Spot in Dielectric Meta‐Cavity Toward Ultra‐Compact Enantioselective Detection

Advanced Optical Materials, EarlyView.
Linearly polarized incident light with normal incidence creates enhanced optical chirality hotspots on the metasurface. Several orders of magnitude optical chirality enhancement offers a promising route toward highly sensitive, compact chiral spectroscopy.
Anastasia Romashkina, Omer Yesilurt, Vahagn Mkhitaryan, Owen Matthiessen, Min Jiang, Evgeny Lyubin, Bayarjargal N. Tugchin, Isabelle Staude, Jer‐Shing Huang, Thomas Pertsch, Alexander V. Kildishev   +10 more
wiley   +1 more source

Force–Displacement Characterization of PNIPAM Microactuators

Advanced Robotics Research, EarlyView.
A method to experimentally establish a force–displacement diagram of poly(N‐isopropyl acrylamide) (PNIPAM) microactuators, printed by 2PP, is presented herein. PNIPAM is a hydrogel whose volume and stiffness change with temperature due to the absorption or release of water.
Manon Cassignol, Esra Yalcinkaya, Adam Chafaï, Jérémy Odent, Pierre Lambert   +4 more
wiley   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

The boundedness of classical operators on variable L-p spaces [PDF]

, 2006
Let \(p(x)\) be a measurable function on an open set \(\Omega\subset \mathbb R^n\) with values in \([1,\,+\infty)\). Denote by \(L^{p(\cdot)}(\Omega)\) the Banach space of measurable functions \(f\) on \(\Omega\) such that for some \(\lambda>0\), \(\int_{\Omega}| f(x)/\lambda| ^{p(x)}\,dx0; \int_{\Omega}| f(x)/\lambda| ^{p(x)}\,dx\leq1\}\). In the case
D. CRUZ URIBE, FIORENZA, ALBERTO, J. M. MARTELL, C. PEREZ   +3 more
openaire   +5 more sources

Combating Inflammation and Promoting Anabolism in Osteoarthritic Cartilage Defect With an MMP13‐Sensing Dual‐Drug Scaffold

Advanced Science, EarlyView.
ABSTRACT Osteoarthritis (OA) is a widespread degenerative joint condition marked by progressive cartilage breakdown, and a chronic inflammatory microenvironment, where conventional therapies largely fail to halt disease progression. To address this unmet need, an intra‐articularly implantable, disease‐responsive scaffold was developed for combinatorial
Zhen Zhang, Bangheng Liu, Yulei Mu, Huiqun Zhou, Liang Ma, Chenjie Xu, Dong‐An Wang   +6 more
wiley   +1 more source