Results 41 to 50 of about 4,031 (108)

Two-sided estimates for order statistics of log-concave random vectors

open access: yes, 2019
We establish two-sided bounds for expectations of order statistics ($k$-th maxima) of moduli of coordinates of centered log-concave random vectors with uncorrelated coordinates.
C Borell   +11 more
core   +1 more source

Sensing and control in dual-recycling laser interferometer gravitational-wave detectors [PDF]

open access: yes, 2003
We introduce length-sensing and control schemes for the dual-recycled cavity-enhanced Michelson interferometer configuration proposed for the Advanced Laser Interferometer Gravitational Wave Observatory (LIGO).
Delker, Tom   +10 more
core   +1 more source

Modelling the power threshold and optimum thermal deformation of indirectly liquid‐nitrogen cryo‐cooled Si monochromators

open access: yesJournal of Synchrotron Radiation, Volume 31, Issue 3, Page 478-484, May 2024.
A robust theoretical analysis of thermal management of cryo‐cooled Si monochromators in hard X‐ray beamlines is developed. This universal theory has been validated by extensive finite‐element analysis studies, offering guidances to assess the heatload deformation quickly.Maximizing the performance of crystal monochromators is a key aspect in the design
Hossein Khosroabadi   +4 more
wiley   +1 more source

Anisotropy of the Lundgren–Townsend model of fine-scale turbulence [PDF]

open access: yes, 1994
The effect of a statistically anisotropic distribution of stretched vortices in the Lundgren-Townsend model of the fine-scale structure of homogeneous turbulence is considered.
Pullin, D. I., Saffman, P. G.
core   +1 more source

On a certain family of inverse ternary cyclotomic polynomials [PDF]

open access: yes, 2013
We study a family of inverse ternary cyclotomic polynomials $\Psi_{pqr}$ in which $r\le\varphi(pq)$ is a positive linear combination of $p$ and $q$.
Bzdega, Bartlomiej
core  

A Parallel-Propagating Alfv\'enic Ion-Beam Instability in the High-Beta Solar Wind

open access: yes, 2013
We investigate the conditions under which parallel-propagating Alfv\'en/ion-cyclotron waves are driven unstable by an isotropic ($T_{\perp \alpha} = T_{\parallel\alpha}$) population of alpha particles drifting parallel to the magnetic field at an average
Bourouaine, Sofiane   +3 more
core   +1 more source

Generalized Uncertainty Principle and Dark Matter

open access: yes, 2003
There have been proposals that primordial black hole remnants (BHRs) are the dark matter, but the idea is somewhat vague. Recently we argued that the generalized uncertainty principle (GUP) may prevent black holes from evaporating completely, in a ...
Chen, Pisin
core   +1 more source

Thick transducers used for generating short-duration stress pulses in thin specimens [PDF]

open access: yes, 1969
By generating short stress pulses with thick transducers, the pulse-echo method for determining sound velocities and acoustic attenuation can be applied to thin specimens.
Peterson, R. G., Rosen, M.
core   +1 more source

Realization of the farad from the dc quantum Hall effect with digitally-assisted impedance bridges

open access: yes, 2010
A new traceability chain for the derivation of the farad from dc quantum Hall effect has been implemented at INRIM. Main components of the chain are two new coaxial transformer bridges: a resistance ratio bridge, and a quadrature bridge, both operating ...
  +25 more
core   +1 more source

Pair supersolid of the extended Bose-Hubbard model with atom-pair hopping on the triangular Lattice

open access: yes, 2012
We systematically study an extended Bose-Hubbard model with atom hopping and atom-pair hopping in the presence of a three-body constraint on the triangular lattice.
Guo, Wenan   +2 more
core   +1 more source

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