Now showing items 1-5 of 5

    • Chaotic dynamics of a nonlinear electronic converter 

      Campos Cantón, Eric; Rosu Barbus, Haret-Codratian (2008)
      "The nonlinear electronic converter used by Rulkov and collaborators [Rulkov et al., 2001], which is the core of their chaotic oscillator, is modeled and simulated numerically by means of an appropriate direct relationship ...
    • Perceptual security of encrypted images based on wavelet scaling analysis 

      Vargas Olmos, Cecilia; José Murguía; Ramírez Torres, Marco Tulio; Mejía Carlos, Marcela; Rosu Barbus, Haret-Codratian (2016)
      "The scaling behavior of the pixel fluctuations of encrypted images is evaluated by using the detrended fluctuation analysis based on wavelets, a modern technique that has been successfully used recently for a wide range ...
    • Scaling analyses based on wavelet transforms for the Talbot effect 

      Rosu Barbus, Haret-Codratian; José Murguía; Andrei Ludu (2013)
      "The fractal properties of the transverse Talbot images are analysed with two well-known scaling methods, the wavelet transform modulus maxima (WTMM) and the wavelet transform multifractal detrended fluctuation anal- ysis ...
    • Talbot effect for dispersion in linear optical fibers and a wavelet approach 

      Rosu Barbus, Haret-Codratian; Treviño Gutiérrez, Juan Pablo; Cabrera Ibarra, Hugo; José Murguía (2006)
      "We shortly recall the mathematical and physical aspects of Talbot’s self-imaging effect occurring in near-field diffraction. In the rational paraxial approximation, the Talbot images are formed at distances z = p/q, where p ...
    • Wavelet multifractal detrended fluctuation analysis of encryption and decryption matrices 

      José Murguía; Mejía Carlos, Marcela; Vargas Olmos, Cecilia; Ramírez Torres, Marco Tulio; Rosu Barbus, Haret-Codratian (2013)
      "In this paper, we study in detail the multifractal features of the main matrices of an encryption system based on a rule-90 cellular automaton. For this purpose we consider the scaling method known as the wavelet transform ...