Results 21 to 30 of about 229,668 (202)

Logarithmic Corrections to Scaling in the Two Dimensional $XY$--Model [PDF]

open access: yes, 1995
By expressing thermodynamic functions in terms of the edge and density of Lee--Yang zeroes, we relate the scaling behaviour of the specific heat to that of the zero field magnetic susceptibility in the thermodynamic limit of the $XY$--model in two ...
A.C. Irving   +38 more
core   +2 more sources

Random walk on the range of random walk [PDF]

open access: yes, 2009
We study the random walk X on the range of a simple random walk on ℤ d in dimensions d≥4. When d≥5 we establish quenched and annealed scaling limits for the process X, which show that the intersections of the original simple random walk path are ...
A. Masi De   +28 more
core   +3 more sources

On the relationship of interior-point methods

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
In this paper, we show that the moving directions of the primal-affine scaling method (with logarithmic barrier function), the dual-affine scaling method (with logarithmic barrier function), and the primal-dual interior point method are merely the Newton
Ruey-Lin Sheu, Shu-Cherng Fang
doaj   +1 more source

Effect of nonlinear filters on detrended fluctuation analysis [PDF]

open access: yes, 2005
We investigate how various linear and nonlinear transformations affect the scaling properties of a signal, using the detrended fluctuation analysis (DFA).
Bernaola-Galvan, P.   +5 more
core   +1 more source

Revisiting (logarithmic) scaling relations using renormalization group

open access: yesCondensed Matter Physics, 2017
We explicitly compute the critical exponents associated with logarithmic corrections (the so-called hatted exponents) starting from the renormalization group equations and the mean field behavior for a wide class of models at the upper critical behavior (
J.J. Ruiz-Lorenzo
doaj   +1 more source

Spatial Up-Scaling Correction for Leaf Area Index Based on the Fractal Theory

open access: yesRemote Sensing, 2016
The scaling effect correction of retrieved parameters is an essential and difficult issue in analysis and application of remote sensing information. Based on fractal theory, this paper developed a scaling transfer model to correct the scaling effect of ...
Ling Wu   +7 more
doaj   +1 more source

The Kosterlitz-Thouless Universality Class [PDF]

open access: yes, 1996
We examine the Kosterlitz-Thouless universality class and show that essential scaling at this type of phase transition is not self-consistent unless multiplicative logarithmic corrections are included.
A.C. Irving   +104 more
core   +3 more sources

Sinusoidal Parameter Estimation Using Quadratic Interpolation around Power-Scaled Magnitude Spectrum Peaks

open access: yesApplied Sciences, 2016
The magnitude of the Discrete Fourier Transform (DFT) of a discrete-time signal has a limited frequency definition. Quadratic interpolation over the three DFT samples surrounding magnitude peaks improves the estimation of parameters (frequency and ...
Kurt James Werner   +1 more
doaj   +1 more source

Logarithmic scaling and spontaneous breaking

open access: yesPhysics Letters B, 1972
Abstract Indecomposable representations of dilatations allow for logarithms in scale invariant operator product expansion. We prove that in absence of spontaneous breaking, they are incompatible with conformal invariance and positivity.
S.FERRARA, A.F.GRILLO, R.GATTO
openaire   +1 more source

Reading charts in logarithmic scale

open access: yesOftalmología Clínica y Experimental, 2023
Seeing clearly from a distance close to our nose, to the end of our outstretched arms, is relevant during a large part of a human being’s day. Being able to read is a frequent activity for most people. Assessing near vision is part of the daily work of an ophthalmologist.
Rodrigo M. Torres   +2 more
openaire   +1 more source

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