Now showing items 501-520 of 603

    • Talbot effect for dispersion in linear optical fibers and a wavelet approach 

      Rosu Barbus, Haret-Codratian; Treviño Gutiérrez, Juan Pablo; Cabrera Ibarra, Hugo; Murguía, José (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 ...
    • Improvement and analysis of a pseudo random bit generator by means of cellular automata 

      Murguía, José; Rosu Barbus, Haret-Codratian (2010)
      "In this paper, we implement a revised pseudo random bit generator based on a rule-90 cellular automaton. For this purpose, we introduce a sequence matrix HN with the aim of calculating the pseudo random sequences of N ...
    • Travelling-wave solutions for Korteweg-de Vries-Burgers equations through factorizations 

      Cornejo Pérez, Octavio; Negro, Javier; Nieto, Luis M.; Rosu Barbus, Haret-Codratian (2006)
      "Travelling-wave solutions of the standard and compound form of Korteweg-de Vries-Burgers equations are found using factorizations of the correspond-ing reduced ordinary diferential equations. The procedure leads to solutions ...
    • A simple circuit with dynamic logic architecture of basic logic gates 

      Campos Cantón, Eric; Rosu Barbus, Haret-Codratian (2010)
      "We report experimental results obtained with a circuit possessing dynamic logic architecture based on one of the theoretical schemes proposed by H. Peng and collaborators in 2008. The schematic diagram of the electronic ...
    • A survey of finite algebraic geometrical structures underlying mutually unbiased quantum measurements 

      Planat, Michel; Rosu Barbus, Haret-Codratian; Perrine, Serge (2006)
      "The basic methods of constructing the sets of mutually unbiased bases in the Hilbert space of an arbitrary finite dimension are reviewed and an emerging link between them is outlined. It is shown that these methods employ ...
    • 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 ...
    • Aristotle: the first encyclopedist 

      Rosu Barbus, Haret-Codratian (2002)
      "Aristotle was the first to declare himself in the class of natural philosophers (physiologoi) and he was the first physicist because he spelled out the first definitions of some basic physical concepts. Moreover, he was ...
    • Reply to the comment by Axel Schulze-Halberg 

      Rosu Barbus, Haret-Codratian; Cornejo Pérez, Octavio; Chen, Pisin (2013)
      "Reply to Comment on H.C. Rosu, O. Cornejo-Perez and P. Chen, \Nonsingular parametric oscillators Darboux related to the classical harmonic oscillator by A. Schulze-Halberg"
    • Mutually unbiased phase states, phase uncertainties, and Gauss sums 

      Planat, Michel; Rosu Barbus, Haret-Codratian (2005)
      "Mutually unbiased bases (MUBs), which are such that the inner product between two vectors in different orthogonal bases is a constant equal to 1/d?, with d the dimension of the finite Hilbert space, are becoming more and ...
    • Multifractal properties of elementary cellular automata in a discrete wavelet approach of MF-DFA 

      Murguía, José; Pérez Terrazas, Jaime Enrique; Rosu Barbus, Haret-Codratian (2009)
      "In 2005, Nagler and Claussen (Phys. Rev. E 71, 067103 (2005)) investigated the time series of the elementary cellular automata (ECA) for possible (multi)fractal behavior. They eliminated the polynomial background atb ...
    • Set-reset flip-flop circuit with a simple output logic 

      Campos Cantón, Isaac; Campos Cantón, Eric; Rosu Barbus, Haret-Codratian; Castellanos Velasco, Ernesto (2012)
      "The equation of the plane (EOP) in analytic geometry is used to build a logic dynamic architecture, i.e., a combination of set-reset flip-flop (SR-FF) and basic logic gates. This is achieved by using two of the variables ...
    • Nonsingular parametric oscillators Darboux-related to the classical harmonic oscillator 

      Rosu Barbus, Haret-Codratian; Cornejo Pérez, Octavio; Chen, Pisin (2012)
      "Interesting nonsingular parametric oscillators which are Darboux related to the classical harmonic oscillator and have periodic dissipative/gain features are identi?ed through a modi?ed factorization method. The same ...
    • La codificación de los quipus incas 

      Cabrera Ibarra, Hugo; Rosu Barbus, Haret-Codratian; Torres González, Luis Adolfo; Treviño Gutiérrez, Juan Pablo (2007)
    • PI-controlled bioreactor as a generalized Liénard system 

      Ibarra Junquera, Vrani; Rosu Barbus, Haret-Codratian (Elsevier, 2007)
      "It is shown that periodic orbits can emerge in Cholette’s bioreactor model working under the influence of a PI-controller. We find a diffeomorphic coordinate trans-formation that turns this controlled enzymatic reaction ...
    • A simple electronic circuit realization of the tent map 

      Campos Cantón, Eric; Rosu Barbus, Haret-Codratian (2009)
      "We present a very simple electronic implementation of the tent map, one of the best-known discrete dynamical systems. This is achieved by using integrated circuits and passive elements only. The experimental behavior of ...
    • Solutions of the perturbed KdV equation for convecting fluids by factorizations 

      Cornejo Pérez, Octavio; Rosu Barbus, Haret-Codratian (2010)
      "In this paper, we obtain some new explicit travelling wave solutions of the perturbed KdV equation through recent factorization techniques that can be performed when the coefficients of the equation fulfill a certain ...
    • Words for nobel prizes 

      Rosu Barbus, Haret-Codratian (2003)
      "We present the statistics of the significant nouns and adjectives of social impact figuring in the nominations of the Nobel prizes in Physics and Chemistry over the period of the awards from 1901 to 2001."
    • Online monitoring of Mezcal fermentation based on redox potential measurements 

      Escalante Minakata, María del Pilar; Ibarra Junquera, Vrani; Rosu Barbus, Haret-Codratian; De León Rodríguez, Antonio; González García, Raúl (2009)
      "We describe an algorithm for the continuous monitoring of the biomass and ethanol concentrations as well as the growth rate in the Mezcal fermentation process. The algorithm performs its task having available only the ...
    • Reconfigurable dynamical logic gate with linear core 

      Campos Cantón, Eric; Campos Cantón, Isaac; Rosu Barbus, Haret-Codratian (2013)
      "A dynamically reconfigurable linear core logic gate is a device that allows logical outputs dependent upon configurable parameters set within device. The device is comprised of three blocks: The first block receives at ...
    • Efecto talbot unidimensional y bidimensional 

      Villasana Mercad, Patricia; González Flores, Ana Laura; Rosu Barbus, Haret-Codratian; Gutiérrez Medina, Braulio (2014)
      "En este trabajo se muestran los resultados de los experimentos realizados en el verano del 2014 en el IPICYT, para corroborar la existencia del efecto Talbot el cual consiste en la reaparición de una imagen nítida de un ...