Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Parikh, Jitendra"'
A method based on wavelet transform and genetic programming is proposed for characterizing and modeling variations at multiple scales in non-stationary time series. The cyclic variations, extracted by wavelets and smoothened by cubic splines, are wel
Externí odkaz:
http://arxiv.org/abs/physics/0612221
Analytic models of two computer generated time series (Logistic map and Rossler system) and two real time series (ion saturation current in Aditya Tokamak plasma and NASDAQ composite index) are constructed using Genetic Programming (GP) framework. In
Externí odkaz:
http://arxiv.org/abs/nlin/0607029
Dynamics of complex systems is studied by first considering a chaotic time series generated by Lorenz equations and adding noise to it. The trend (smooth behavior) is separated from fluctuations at different scales using wavelet analysis and a predic
Externí odkaz:
http://arxiv.org/abs/nlin/0607027
We study the scaling behavior of the fluctuations, as extracted through wavelet coefficients based on discrete wavelets. The analysis is carried out on a variety of physical data sets, as well as Gaussian white noise and binomial multi-fractal model
Externí odkaz:
http://arxiv.org/abs/physics/0604004
We apply a recently developed wavelet based approach to characterize the correlation and scaling properties of non-stationary financial time series. This approach is local in nature and it makes use of wavelets from the Daubechies family for detrendi
Externí odkaz:
http://arxiv.org/abs/nlin/0601074
We illustrate the efficacy of a discrete wavelet based approach to characterize fluctuations in non-stationary time series. The present approach complements the multi-fractal detrended fluctuation analysis (MF-DFA) method and is quite accurate for sm
Externí odkaz:
http://arxiv.org/abs/nlin/0601065
We propose a wavelet based method for the characterization of the scaling behavior of non-stationary time series. It makes use of the built-in ability of the wavelets for capturing the trends in a data set, in variable window sizes. Discrete wavelets
Externí odkaz:
http://arxiv.org/abs/nlin/0412046
Publikováno v:
J.Phys.G28:151-168,2002
The medium modification of vector meson masses is studied taking into account the quantum correction effects for the hot and dense hadronic matter. In the framework of Quantum Hadrodynamics, the quantum corrections from the baryon and scalar meson se
Externí odkaz:
http://arxiv.org/abs/nucl-th/0108035
Autor:
Mishra, Hiranmaya, Parikh, Jitendra C.
Publikováno v:
Nucl.Phys. A679 (2001) 597-615
We discuss in this note simultaneous existence of chiral symmetry breaking and color superconductivity at finite temperature and density in a Nambu-Jona-Lasinio type model. The methodology involves an explicit construction of a variational ground sta
Externí odkaz:
http://arxiv.org/abs/hep-ph/0003019
Publikováno v:
Phys.Rev.D59:034501,1999
We evaluate equal time point to point spatial correlation functions of mesonic currents at finite temperature. For this purpose we consider the QCD vacuum structure in terms of quark antiquark condensates and their fluctuations in terms of an irreduc
Externí odkaz:
http://arxiv.org/abs/hep-ph/9805290