Results 81 to 90 of about 770,616 (284)

Matricial Radius: A Relation of Numerical radius with Matricial Range

, 2019
It has been shown that if $T$ is a complex matrix, then {\small\begin{align*} (T)&=\frac{1}{n}\sup\left\{|\mathrm{Tr}\ X|;\ X\in W^n(T)\right\}\\ &=\frac{1}{n}\sup\left\{\|X\|_1;\ X\in W^n(T)\right\}\\ &= \sup\left\{ (X);\ X\in W^n(T)\right\} \end{align*} } where $n$ is a positive integer, $ (T)$ is the numerical radius and $W^n(T)$ is
Dehghani, Mahdi, Kian, Mohsen, Sattari, Mostafa   +2 more
openaire   +2 more sources

Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle, Andreas Leha, Volker Limmroth, Wolfram Windisch, Maximilian Zimmermann   +4 more
wiley   +1 more source

Minimum Radii of Super-Earths: Constraints from Giant Impacts

, 2010
The detailed interior structure models of super-Earth planets show that there is degeneracy in the possible bulk compositions of a super-Earth at a given mass and radius, determined via radial velocity and transit measurements, respectively. In addition,
Adams, Agnor, Borucki, Fortney, Grasset, Ida, Marcus, Masset, Melnick, Petaev, Sasselov, Stewart, Valencia   +12 more
core   +1 more source

Triangular Index Ratio as An Alternative Method to the Alpha Angle for Defining the Presence of Cam Morphology: A Prospective Cohort Study

Arthritis Care &Research, Accepted Article.
Objective Cam morphology, a significant risk factor for hip osteoarthritis, is commonly quantified by the alpha angle (AA). This study aims to explore the potential of the triangular index ratio (TIR) to quantify cam morphology on anteroposterior radiographs by assessing the association between TIR‐defined cam morphology and the development of ...
Jinchi Tang, Fleur Boel, Michiel M. A. van Buuren, Noortje S. Riedstra, Myrthe A. van den Berg, Jos Runhaar, Sita Bierma‐Zeinstra, Rintje Agricola   +7 more
wiley   +1 more source

A universal density slope - velocity anisotropy relation

, 2005
One can solve the Jeans equation analytically for equilibrated dark matter structures, once given two pieces of input from numerical simulations. These inputs are 1) a connection between phase-space density and radius, and 2) a connection between ...
Hansen, Steen H., Moore, Ben, Stadel, Joachim   +2 more
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Some norm inequalities for accretive Hilbert space operators

Cubo
New norm inequalities for accretive operators on Hilbert space are given. Among other inequalities, we prove that if \(A, B \in \mathbb{B(H)}\) and \(B\) is self-adjoint and also \(C_{m,M}(iAB)\) is accretive, then \begin{eqnarray*} \frac{4 \sqrt ...
Baharak Moosavi, Mohsen Shah Hosseini
doaj   +1 more source

Ways to constrain neutron star equation of state models using relativistic disc lines

, 2011
Relativistic spectral lines from the accretion disc of a neutron star low-mass X-ray binary can be modelled to infer the disc inner edge radius. A small value of this radius tentatively implies that the disc terminates either at the neutron star hard ...
Akmal, Baldo, Bardeen, Beckwith, Bejger, Berti, Berti, Bhattacharyya, Bhattacharyya, Bhattacharyya, Bhattacharyya, Bhattacharyya, Bhattacharyya, Bhattacharyya, Brenneman, Cackett, Cackett, Cackett, Cook, Datta, di, Dovčiak, D’Aí, D’Aí, Iaria, Kluźniak, Laor, Lattimer, Manko, Manko, Miller, Miller, Pachon, Pandel, Pandharipande, Papitto, Reis, Reynolds, Sahu, Sanabria-Gómez, Shapiro, Shibata, Stergioulas, Sudip Bhattacharyya, Thampan, Thampan   +45 more
core   +1 more source

Computing the numerical radius

Linear Algebra and its Applications, 1996
The paper deals with the numerical calculation of the numerical radius of a complex matrix. The derived methods consist mainly of matrix-vector multiplications, being based on the power method for calculating the largest eigenvalue (in modulus) of a Hermitian matrix. Computational tests are given to show the efficiency of the proposed algorithm.
openaire   +1 more source