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  • Boltzmann strategies  (1)
  • Electrolyte solution  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Pattern dynamics and optimization by reaction diffusion systems (1986)
    Springer
    Journal of statistical physics 45 (1986), S. 891-903 
    Details
    ISSN: 1572-9613
    Keywords: Boltzmann strategies ; Darwin strategies ; annealing ; eigenvalue problems ; double dynamics ; chemical waves ; information compression on attractors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Reaction-diffusion systems show a fast and rather complex response on patterns produced by external space- and/or time-dependent perturbations. For example, one-component autocatalytic reactions rapidly find the loci where the given space-dependent reaction rates have relatively high values by following a kind of Darwinian strategy (combining self-reproduction and diffusion). It is shown that a simulation of this strategy in combination with annealing (decreasing the diffusion rates in time) may be used as an alternative to thermodynamic annealing strategies. Many-component reactions, such as the light-sensitive Belousov-Zhabotinsky reaction, show a more complex response to patterns impressed by illumination, for example. The response behavior and possible applications to dynamic information processing are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020580
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Frequency dependent conductance and dielectric permittivity (1990)
    Springer
    Journal of solution chemistry 19 (1990), S. 945-955 
    Details
    ISSN: 1572-8927
    Keywords: Electrolyte solution ; frequency conductance ; dielectric permittivity ; ion pairing ; rotation dipoles ; strong coupling ; feedback or echo theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Starting from the basic equation for the pair distribution function in nonequilibrium which takes into account the echo effect, the theory of electrolytes in low frequency fields is investigated. For explicit calculations of the pair distribution functions, the strong coupling approximation (SCA) for distances smaller than the Bjerrum distance is used. The result is discussed as the effect of ionic motion on the complex permittivity of the solution. In the limiting case of large values of the Bjerrum parameier it identifies with the effect of rotating ion pairs and allows an evaluation of the increase on the static permittivity of the electrolyte solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653079
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    Paper (German National Licenses)
    Fulltext
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