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  1.  61
    Evolutionary Design of a DDPD Model of Ligation.Mark A. Bedau & Andrew Buchanan - unknown
    Ligation is a form of chemical self-assembly that involves dynamic formation of strong covalent bonds in the presence of weak associative forces. We study an extremely simple form of ligation by means of a dissipative particle dynamics (DPD) model extended to include the dynamic making and breaking of strong bonds, which we term dynamically bonding dissipative particle dynamics (DDPD). Then we use a chemical genetic algorithm (CGA) to optimize the model’s parameters to achieve a limited form of ligation of trimers—a (...)
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  2.  11
    Real-Time? Reframing Temporal Consciousness in Time-Based and Interactive Media.Andrew Buchanan - 2018 - Technoetic Arts 16 (1):53-62.
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  3.  41
    The Flexible Balance of Evolutionary Novelty and Memory in the Face of Environmental Catastrophes.Andrew Buchanan & Mark A. Bedau - unknown
    We study the effects of environmental catastrophes on the evolution of a population of sensory-motor agents with individually evolving mutation rates, and compare these effects in a variety of control systems. A catastrophe makes the balance shift toward the need for evolutionary novelty, and we observe the mutation rate evolve upwards. As the population adapts the sensory-motor strategies to the new environment and the balance shifts toward a need for evolutionary memory, the mutation rate falls. These observations support the hypothesis (...)
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