Results 1 to 10 of about 1,779 (56)

Using udometric network data to estimate an environmental covariate [PDF]

open access: yes, 2011
Manyhydrologicalandecologicalstudiesrecognizetheimportanceofcharacterizingthetemporalandspatialvari- ability of precipitation. In this study, geostatistical methodologies were developed in order to estimate a hydro-meteorological factor by (re)building ...
Costa, Marco, Gonçalves, A. Manuela
core   +2 more sources

Stochastic gauges in quantum dynamics for many-body simulations [PDF]

open access: yes, 2001
Quantum dynamics simulations can be improved using novel quasiprobability distributions based on non-orthogonal hermitian kernel operators. This introduces arbitrary functions (gauges) into the stochastic equations, which can be used to tailor them for ...
Anderson   +14 more
core   +2 more sources

Efficiency of cellular information processing

open access: yesNew Journal of Physics, 2014
We show that a rate of conditional Shannon entropy reduction, characterizing the learning of an internal process about an external process, is bounded by the thermodynamic entropy production.
Andre C Barato   +2 more
doaj   +1 more source

After notes on self-similarity exponent for fractal structures

open access: yesOpen Physics, 2017
Previous works have highlighted the suitability of the concept of fractal structure, which derives from asymmetric topology, to propound generalized definitions of fractal dimension.
Fernández-Martínez Manuel   +1 more
doaj   +1 more source

Small-scale behaviour in deterministic reaction models [PDF]

open access: yes, 2010
In a recent paper published in this journal [J. Phys. A: Math. Theor. 42 (2009) 495004] we studied a one-dimensional particles system where nearest particles attract with a force inversely proportional to a power \alpha of their distance and coalesce ...
ben-Avraham, Daniel, Politi, Paolo
core   +2 more sources

Level 2 and level 2.5 large deviation functionals for systems with and without detailed balance

open access: yesNew Journal of Physics, 2016
Large deviation functions are an essential tool in the statistics of rare events. Often they can be obtained by contraction from a so-called level 2 or level 2.5 large deviation functional characterizing the empirical density and current of the ...
J Hoppenau, D Nickelsen, A Engel
doaj   +1 more source

Note on a diffraction-amplification problem [PDF]

open access: yes, 2004
We investigate the solution of the equation \partial_t E(x,t)-iD\partial_x^2 E(x,t)= \lambda |S(x,t)|^2 E(x,t)$, for x in a circle and S(x,t) a Gaussian stochastic field with a covariance of a particular form.
Lebowitz, Joel L., Mounaix, Philippe
core   +1 more source

Comment on ``Connection between the Burgers equation with an elastic forcing term and a stochastic process''

open access: yes, 2006
In the above mentioned paper by E. Moreau and O. Vall\'{e}e [Phys. Rev. {\bf E 73}, 016112, (2006)], the one-dimensional Burgers equation with an elastic (attractive) forcing term has been claimed to be connected with the Ornstein-Uhlenbeck process.
H. Risken, Piotr Garbaczewski
core   +1 more source

Statics and dynamics of a harmonic oscillator coupled to a one-dimensional Ising system

open access: yes, 2011
We investigate an oscillator linearly coupled with a one-dimensional Ising system. The coupling gives rise to drastic changes both in the oscillator statics and dynamics.
Bonilla, L. L., Carpio, A., Prados, A.
core   +1 more source

Motzkin numbers out of Random Domino Automaton

open access: yes, 2011
Motzkin numbers are derived from a special case of Random Domino Automaton - recently proposed toy model of earthquakes. An exact solution of the set of equations describing stationary state of Random Domino Automaton in "inverse-power" case is presented.
Aigner   +21 more
core   +1 more source

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