Results 31 to 40 of about 624,709 (272)
Elastic contact to a coated half-space - Effective elastic modulus and real penetration [PDF]
, 2004 A new approach to the contact to coated elastic materials is presented. A relatively simple numerical algorithm based on an exact integral formulation of the elastic contact of an axisymmetric indenter to a coated substrate is detailed.
A. Perriot +6 more
core +4 more sources
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 +2 more
openaire +2 more sources
Numerical range for random matrices
, 2014 We analyze the numerical range of high-dimensional random matrices, obtaining limit results and corresponding quantitative estimates in the non-limit case. For a large class of random matrices their numerical range is shown to converge to a disc.
Collins, Benoît +3 more
core +1 more source
A note on convexity of sections of quaternionic numerical range
, 2018 The quaternionic numerical range of matrices over the ring of quaternions is not necessarily convex. We prove Toeplitz-Hausdorff like theorem, that is, for any given quaternionic matrix every section of its quaternionic numerical range is convex.
Kumar, P. Santhosh
core +1 more source
An adaptive, fully implicit multigrid phase-field model for the quantitative simulation of non-isothermal binary alloy solidification [PDF]
, 2008 Using state-of-the-art numerical techniques, such as mesh adaptivity, implicit time-stepping and a non-linear multi-grid solver, the phase-field equations for the non-isothermal solidification of a dilute binary alloy have been solved.
Jimack, P.K., Mullis, A.M., Rosam, J.
core +1 more source
Semi-analytical Formulas for the Fundamental Parameters of Galactic Early B Supergiants [PDF]
Serbian Astronomical Journal, 2009 The publication of new tables of calibration of some fundamental parameters of Galactic B0-B5 supergiants in the two classes $I_mathrm{a}$ and $I_mathrm{b} $ allows to particularize the eight parameters conjecture that model five fundamental ...
Zaninetti, L.
doaj +3 more sources
, 2007 This paper shows how C-numerical-range related new strucures may arise from practical problems in quantum control--and vice versa, how an understanding of these structures helps to tackle hot topics in quantum information. We start out with an overview
Albertini F +21 more
core +1 more source
A Simple Analytical Model for Gaps in Protoplanetary Disks
, 2015 An analytical model is presented for calculating the surface density as a function of radius $\Sigma(r)$ in protoplanetary disks in which a planet has opened a gap. This model is also applicable to circumbinary disks with extreme binary mass ratios.
Duffell, Paul C.
core +1 more source
Gas clumping in galaxy clusters [PDF]
, 2014 The reconstruction of galaxy cluster's gas density profiles is usually performed by assuming spherical symmetry and averaging the observed X-ray emission in circular annuli. In the case of a very inhomogeneous and asymmetric gas distribution, this method
Eckert, D. +6 more
core +2 more sources
Minimal inductance for axisymmetric transmission lines with radially dependent anode-cathode gap
Physical Review Special Topics. Accelerators and Beams, 2009 We extend the variational calculus technique for inductance minimization of constant gap axisymmetric transmission lines (TL), introduced by Hurricane [J. Appl. Phys.
Eduardo M. Waisman, M. E. Cuneo
doaj +1 more source