Results 221 to 230 of about 66,358 (264)

A nanoscale robotic cleaner. [PDF]

Nat Commun
Qin J, Büchner C, Wu X, Hecht B.
europepmc   +1 more source

Simulated Mars Gravity Impairs Intestinal Epithelial Barrier Integrity via Selective Modulation of Tight Junction Components. [PDF]

Biomolecules
Benvenuti L, Bertini C, Marcelli G, Ippolito C, Citi V, Giovannoni R, Iacopetti P, Gambino G, Rossi L, Angeloni D, Manzoni D, Salvetti A.   +11 more
europepmc   +1 more source

The native human glomerulus features a slit diaphragm resembling a densely interwoven fishnet. [PDF]

JCI Insight
Moser D, Birtasu AN, Skaer L, Roth P, Rehm L, Wenzel M, Bein J, Köllermann J, Mantanya MS, Chun FK, Scheffer MP, Frangakis AS.   +11 more
europepmc   +1 more source

Industry-Academia Interface: Exploring the growth of Additive Manufacturing as an industry with Laura Del Río Fernández. [PDF]

Commun Eng
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Image denoising using a tight frame

IEEE Transactions on Image Processing, 2006
We present a general mathematical theory for lifting frames that allows us to modify existing filters to construct new ones that form Parseval frames. We apply our theory to design nonseparable Parseval frames from separable (tensor) products of a piecewise linear spline tight frame.
Ioannis A Kakadiaris, Ioannis Konstantinidis, Manos Papadakis   +2 more
exaly   +3 more sources

The Closure of the Set of Tight Frame Wavelets

Acta Applicandae Mathematicae, 2008
The paper deals with the properties of the closure of the set of tight frame wavelets. It is shown that the collection of such wavelets is not dense in \(L^2(\mathbb{R}^n)\). Therefore a necessary and a sufficient conditions are given for a function \(f\in L^2(\mathbb{R}^n)\) to belong to the closure of this set. These are, respectively, fulfilling one
Marcin Bownik, Bownik Marcin
exaly   +3 more sources

Tight K-frames and weaving of K-frames

Journal of Pseudo-Differential Operators and Applications, 2021
The authors provide a sufficient condition for a given Bessel sequence to be a \(K\) frame in a Hilbert space. They also characterize the weaving of \(K\) frames in Hilbert spaces. They provide several sufficient conditions on a \(K\) frame under the action of a bounded surjective operator on the Hilbert space to be \(K\) woven or woven.
Xiangchun Xiao, Kai Yan, Guoping Zhao, Yucan Zhu   +3 more
openaire   +2 more sources

Finite Normalized Tight Frames

Advances in Computational Mathematics, 2003
Given a Hilbert space \(H\), a sequence \(\{x_n\}\subset H\) is a frame if there exist constants \(0 < A \leq B < \infty\) such that for all \(y\in H\): \(A\|y\|^2 \leq \sum_n |\langle y, x_n \rangle|^2 \leq B \|y\|^2\). A frame is tight if \(A=B\), and a tight frame is normalized if for all \(n\): \(\|x_n\|=1\).
John J. Benedetto, Matthew Fickus
openaire   +2 more sources

Expansion of frames to tight frames

Acta Mathematica Sinica, English Series, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Dengfeng, Sun, Wenchang
openaire   +2 more sources