Autoregressive modeling of the variability of an active galaxy
AbstractMany natural phenomena can be described by power-laws of the temporal or spatial correlations. The equivalent in frequency domain is…
Numerical Modeling
Autoregressive modeling of biological phenomena
AbstractMany natural phenomena can be described by power-laws of temporal or spatial correlations. The equivalence in frequency domain is the…
Deterministic components in the light curve amplitude of Y Oph
AbstractAbout two decades after the discovery of the amplitude decline of the light curve of the classical Cepheid Y Oph,…
Biperiodic orbital period modulation of the W UMa binary system CK Bootis
AbstractA study of the orbital period variation of the W UMa system CK Bootis is made using an extended observational…
Detection of low level periodic signals through enhanced self-correlation method. The case of ER Vulpeculae
AbstractThe self-correlation (SC) method proposed three decades ago by Percy, Jakate and Matthews is a complementary time series analysis method…
Numerical modelling of the one-dimensional diffusion by random walkers
AbstractIn this paper we describe a numerical method of cellular automaton type to study the diffusion processes. The macroscopic diffusive…
Evaluation of overshooting errors in particle methods for diffusion by biased global random walk
AbstractThe adjustment of grid steps which guarantees that particles methods yield no numerical diffusion inevitably induces overshooting errors in the…
On the multi-decadal oscillation of Atlantic tropical storm activity
AbstractLong term Atlantic tropical storm activity is described by the time series of the yearly Accumulated Cyclone Energy (ACE) Index…
Itô equation model for dispersion of solutes in heterogeneous media
AbstractTransport processes in heterogeneous media such as ionized plasmas, natural porous media, and turbulent atmosphere are often modeled as diffusion…
Numerical simulation of rain-runoff process within the Zalău drainage, at the Sărmăşag gauging point
AbstractWe use the rainfall-runoff model of Nielsen and Hansen in order to study the daily rates of flow at the…