Edoardo Daly

Learn More
The relative entropy between the joint probability distribution of backward and forward sequences is used to quantify time asymmetry (or irreversibility) for stationary time series. The parallel with the thermodynamic theory of nonequilibrium steady states allows us to link the degree of asymmetry in the time signal with the distance from equilibrium and(More)
We introduce a general class of stochastic processes forced by instantaneous random fires (i.e., jumps) that reset the state variable x to a given value. Since in many physical systems the fire activity is often dependent on the actual value of the state variable, as in the case of natural fires in ecosystems and firing dynamics in neuronal activity, the(More)
The time reversal of stochastic diffusion processes is revisited with emphasis on the physical meaning of the time-reversed drift and the noise prescription in the case of multiplicative noise. The local kinematics and mechanics of free diffusion are linked to the hydrodynamic description. These properties also provide an interpretation of the Pope-Ching(More)
On the basis of the currents induced by electron ¯uxes in the Scintillating Fibre Detector (SFD) onboard the EQUATORS satellite launched on 2 December 1997, an in-situ acceleration of radiation belt electrons is found to possibly contribute to the increase of the ¯ux of electrons with energies greater than 400 keV. The data acquired between 16 December 1997(More)
The time reversal of stochastic diffusion processes is revisited with emphasis on the physical meaning of the time-reversed drift and the noise prescription in the case of multiplicative noise. The local kinematics and mechanics of free diffusion are linked to the hydrodynamic description. These properties also provide an interpretation of the Pope-Ching(More)
The paper investigates stochastic processes forced by independent and identically distributed jumps occurring according to a Poisson process. The impact of different distributions of the jump amplitudes are analyzed for processes with linear drift. Exact expressions of the probability density functions are derived when jump amplitudes are distributed as(More)
On 10 January 1997 a magnetic cloud of a coro-nal mass ejection impinged upon the earth magnetosphere and caused considerable variations of the relativistic electron population in the earth's outer radiation belt in the following days. Data obtained with radiation detectors on board a pair of satellites, STRV-1a and STRV-1b in a nearly equatorial(More)
  • 1