Results 31 to 40 of about 287,902 (268)

Eigenvalues of block structured asymmetric random matrices [PDF]

, 2015
We study the spectrum of an asymmetric random matrix with block structured variances. The rows and columns of the random square matrix are divided into $D$ partitions with arbitrary size (linear in $N$).
Aljadeff, Johnatan, Renfrew, David, Stern, Merav   +2 more
core   +1 more source

Dynamic Substructuring of Damped Structures Using Singular Value Decomposition [PDF]

Journal of Applied Mechanics, 1997
This paper deals with the theoretical aspects concerning linear elastodynamic of damped continuum medium in the frequency domain. Eigenvalue analysis and frequency response function are studied. The methods discussed here use a dynamic substructuring approach.
Ohayon, Roger, Sampaio, R., Soize, Christian   +2 more
openaire   +2 more sources

Sparse Gradient Based Structured Matrix Decomposition for Salient Object Detection

IEEE Access, 2018
In the salient object detection, the given image can be decomposed into background regions (low-rank part) and salient regions (sparse part). In this paper, we present a novel sparse gradient-based structured matrix decomposition model for salient object
Xiaoli Sun, Xiaoting Zhang, Xiujun Zhang, Chen Xu   +3 more
doaj   +1 more source

Robust Stability Under Mixed Time Varying, Time Invariant and Parametric Uncertainty [PDF]

, 1995
Robustness analysis is considered for systems with structured uncertainty involving a combination of linear time-invariant and linear time-varying perturbations, and parametric uncertainty.
Paganini, Fernando
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

µ−Values for Matrices Corresponding to Symmetries in Control Systems

International Journal of Analysis and Applications, 2018
In this article we consider numerical approximation of structured singular values ($\mu-$values). The lower bounds for $\mu-$values are approximated by using ordinary differential equations based technique.
Mutti-Ur Rehman, M. Fazeel Anwar
doaj   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

The Structured Singular Value for Linear Input/Output Operators [PDF]

SIAM Journal on Control and Optimization, 1996
The authors employ their lifting method [\textit{H. Bercovici}, \textit{C. Foias}, \textit{P. P. Khargonekar} and \textit{A. Tannenbaum}, J. Math. Anal. Appl. 187, 617-627 (1994; Zbl 0808.93018)] to study the structured singular value applied to input/output operators of control systems. Let \(A\) be a linear operator on a Hilbert space \({\mathcal E}\)
Bercovici, Hari, Foias, Ciprian, Tannenbaum, Allen   +2 more
openaire   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Initial Layer Analysis for a Linkage Density in Cell Adhesion Mechanisms★

ESAIM: Proceedings and Surveys, 2018
In this paper we present a non local age structured equation involved in cell motility modeling [5, 9, 11]. It describes the evolution of a density of linkages of a point submitted to adhesion.
Milisic Vuk
doaj   +1 more source