Showing 21 - 30 of 82
In this paper, one studies the distribution of log-returns (tick-by-tick) in the Lisbon stock market and shows that it is well adjusted by the solution of the equation, dpxd|x|=-βq′pxq′-(βq-βq′)pxq, which corresponds to a generalisation of the differential equation which has as solution...
Persistent link: https://www.econbiz.de/10011062389
We describe a new statistical pattern characteristic of saddle-center critical points in the dynamics of non-integrable Hamiltonian systems, associated with the partition of the Hamiltonian into rotational motion energy and hyperbolic motion energy pieces in a linear neighborhood of the...
Persistent link: https://www.econbiz.de/10011064602
We study the X-ray intensities of 142 light curves of cataclysmic variables, galaxies, pulsars, supernova remnants and other X-ray sources present in the public data collected by the instrument All Sky Monitor on board the satellite Rossi X-ray Timing Explorer. We show that the X-ray light...
Persistent link: https://www.econbiz.de/10010872824
A new Monte Carlo scheme based on the system of Tsallis’ generalized statistical mechanics is applied to a simple double well potential to calculate the canonical thermal average of potential energy. Although we observed serious quasi-ergodicity when using the standard Metropolis Monte Carlo...
Persistent link: https://www.econbiz.de/10010872879
In this study, we introduce a new nonlinear quantizer for image processing by using Tsallis entropy. Lloyd–Max quantizer is commonly used in minimizing the quantization errors. We report that the new introduced technique works better than Lloyd–Max one for selected standard images and could...
Persistent link: https://www.econbiz.de/10010873497
We briefly discuss the state of the art on the anomalous dynamics of the Hamiltonian mean field (HMF) model. We stress the important role of the initial conditions for understanding the microscopic nature of the intriguing metastable quasi-stationary states (QSS) observed in the model and the...
Persistent link: https://www.econbiz.de/10010874227
Tsallis’ nonadditive statistics was employed to determine rotational temperatures in low-temperature nonequilibrium molecular plasmas. The First Negative and Second Positive Systems of nitrogen were used as test cases with classical two-Boltzmann distributions that may be replaced successfully...
Persistent link: https://www.econbiz.de/10010931539
The general approach of a nonlinear Fokker–Planck equation is applied to investigate the behavior of main statistical moments of a stochastic system. It was shown that the system described by Tsallis statistics can undergo transitions inherent to multiplicative noise-induced transitions. The...
Persistent link: https://www.econbiz.de/10010871722
We describe in detail two numerical simulation methods valid to study systems whose thermostatistics is described by generalized entropies, such as Tsallis. The methods are useful for applications to non-trivial interacting systems with a large number of degrees of freedom, and both short- and...
Persistent link: https://www.econbiz.de/10010872283
We study the x-ray intensity variations obtained from the time series of 155 light curves of x-ray binary systems collected by the instrument All Sky Monitor on board the satellite Rossi X-Ray Timing Explorer. These intensity distributions are adequately fitted by q-Gaussian distributions which...
Persistent link: https://www.econbiz.de/10010872404