Results 31 to 40 of about 433,625 (268)

The Scaling Behavior of Classical Wave Transport in Mesoscopic Media at the Localization Transition

open access: yes, 2005
The propagation of classical wave in disordered media at the Anderson localization transition is studied. Our results show that the classical waves may follow a different scaling behavior from that for electrons.
A. Z. Genack   +10 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Metric-Affine Geometries with Spherical Symmetry [PDF]

open access: yesSymmetry, 2020
We provide a comprehensive overview of metric-affine geometries with spherical symmetry, which may be used in order to solve the field equations for generic gravity theories which employ these geometries as their field variables. We discuss the most general class of such geometries, which we display both in the metric-Palatini formulation and in the ...
openaire   +2 more sources

Information geometry of the spherical model [PDF]

open access: yesPhysical Review E, 2003
Motivated by previous observations that geometrizing statistical mechanics offers an interesting alternative to more standard approaches,we have recently calculated the curvature (the fundamental object in this approach) of the information geometry metric for the Ising model on an ensemble of planar random graphs.
Janke, W., Johnston, D. A., Kenna, R.
openaire   +3 more sources

On the Number of Spherical Circles Needed to Cover a Spherical Convex Domain

open access: yesMathematics
In this manuscript, we study the coverage of convex spherical domains by spherical circles. This question can be applied to the location of satellites, weather balloons, radio towers, etc.
Elad Atia, Reuven Cohen, Shai Gul
doaj   +1 more source

Fisher's geometrical model of evolutionary adaptation - beyond spherical geometry [PDF]

open access: yes, 2006
Fisher's geometrical model of evolutionary adaptation has recently been used in a variety of contexts of interest to evolutionary biologists. The renewed interest in this model strongly motivates generalizations that make it a more realistic description ...
Waxman, David
core   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Ultra-broadband axicon transducer for optoacoustic endoscopy

open access: yesScientific Reports, 2021
Image performance in optoacoustic endoscopy depends markedly on the design of the transducer employed. Ideally, high-resolution performance is required over an expanded depth of focus.
Zakiullah Ali   +2 more
doaj   +1 more source

On the works of Euler and his followers on spherical geometry [PDF]

open access: yes, 2014
We review and comment on some works of Euler and his followers on spherical geometry. We start by presenting some memoirs of Euler on spherical trigonometry. We comment on Euler's use of the methods of the calculus of variations in spherical trigonometry.
Papadopoulos, Athanase
core  

The NextGen Model Atmosphere grid: II. Spherically symmetric model atmospheres for giant stars with effective temperatures between 3000 and 6800~K

open access: yes, 1999
We present the extension of our NextGen model atmosphere grid to the regime of giant stars. The input physics of the models presented here is nearly identical to the NextGen dwarf atmosphere models, however spherical geometry is used self-consistently in
Baschek B.   +8 more
core   +3 more sources

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