Results 81 to 90 of about 4,538,824 (321)
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 +12 more
core +1 more source
Approximate numerical radius orthogonality
, 2020 We introduce the notion of approximate numerical radius (Birkhoff) orthogonality and investigate its significant properties. Let $T, S\in \mathbb{B}(\mathscr{H})$ and $\varepsilon \in [0, 1)$. We say that $T$ is approximate numerical radius orthogonal to $S$ and we write $T\perp^{\varepsilon}_ S$ if $$ ^2(T+ S)\geq ^2(T)-2\varepsilon (T) ( S)
Amyari, Maryam +1 more
openaire +2 more sources
Numerical Radius Inequalities Concerning with Algebra Norms
Mediterranean Journal of Mathematics, 2021 We give an expression for a generalized numerical radius of Hilbert space operators and then apply it to obtain upper and lower bounds for the generalized numerical radius. We also establish some generalized numerical radius inequalities involving the product of two operators. Applications of our inequalities are also provided.
Ali Zamani +3 more
openaire +3 more sources
Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende +26 more
wiley +1 more source
Application of three-body stability to globular clusters: I. The stability radius
, 2014 The tidal radius is commonly determined analytically by equating the tidal field of the galaxy to the gravitational potential of the cluster. Stars crossing this radius can move from orbiting the cluster centre to independently orbiting the galaxy.
Kennedy, Gareth F.
core +1 more source
Metals, 2021 Springback is a common defect caused by elastic recovery in the plastic forming process, which can cause the formed workpiece to deviate from the target shape.
Chuandong Chen +4 more
doaj +1 more source
The decomposable numerical radius and numerical radius of a compound matrix
Linear Algebra and its Applications, 1986 Given an \(n\times n\) complex matrix A with singular values \(\alpha_ 1\geq \alpha_ 2\geq...\geq \alpha_ n\) and eigenvalues \(\lambda_ 1,\lambda_ 2,...,\lambda_ n\), where \(| \lambda_ 1| \geq | \lambda_ 2| \geq...\geq | \lambda_ n|\), denote by \(C_ m(A)\) the m-th compound of A(1\(\leq m\leq n)\) and by \(r_ d(C_ m(A))\) and \(r(C_ m(A))\) the ...
openaire +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Cognitive decline is a disabling and variable feature of Parkinson disease (PD). While cholinergic system degeneration is linked to cognitive impairments in PD, most prior research reported cross‐sectional associations. We aimed to fill this gap by investigating whether baseline regional cerebral vesicular acetylcholine transporter ...
Taylor Brown +6 more
wiley +1 more source
Arthritis Care &Research, EarlyView.Objective Ultrasound (US) has been proposed as a potential tool for assessing skin fibrosis in systemic sclerosis (SSc). However, a large‐scale comparison of US‐based assessment with histologic markers of skin fibrosis has not been reported. We evaluated US‐based skin assessments for their face validity (differentiation between involved SSc and healthy
Ruhani Desai +12 more
wiley +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 +45 more
core +1 more source