Search Results - "Gama, Sı́lvio M.A."

An econophysics approach to the Portuguese Stock Index—PSI-20 by Matos, José A.O., Gama, Sı́lvio M.A., Ruskin, Heather J., Duarte, José A.M.S.

“…We analyse the PSI-20 (Portuguese Stock Index) data series from 1993 to 2001, with a view to examining the structure of the series, the appropriateness of the…”
Get full text

Computation of Kinematic and Magnetic α-Effect and Eddy Diffusivity Tensors by Padé Approximation by Gama, Sílvio M.A., Chertovskih, Roman, Zheligovsky, Vladislav

“…We present examples of Padé approximations of the α -effect and eddy viscosity/diffusivity tensors in various flows. Expressions for the tensors derived in the…”
Get full text

A new approach to the Pontryagin maximum principle for nonlinear fractional optimal control problems by Ali, Hegagi M., Pereira, Fernando Lobo, Gama, Sílvio M. A.

“…In this paper, we discuss a new general formulation of fractional optimal control problems whose performance index is in the fractional integral form and the…”
Get full text

Point-source dispersion of quasi-neutrally-buoyant inertial particles by Martins Afonso, Marco, Gama, Sílvio M. A.

“… We analyze the evolution of the distribution, both in the phase space and in the physical space, of inertial particles released by a spatially-localized…”
Get full text

Time and scale Hurst exponent analysis for financial markets by Matos, José A.O., Gama, Sílvio M.A., Ruskin, Heather J., Sharkasi, Adel Al, Crane, Martin

“…We use a new method of studying the Hurst exponent with time and scale dependency. This new approach allows us to recover the major events affecting worldwide…”
Get full text

Editorial for Special Issue “Multiscale Turbulent Transport” by Martins Afonso, Marco, Gama, Sílvio M. A.

“…Turbulent transport is currently a great subject of ongoing investigation at the interface of methodologies running from theory to numerical simulations and…”
Get full text