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Modelling effects of high product and substrate inhibition on oscillatory behavior in continuous bioreactors.
We consider a model for continuous bioreactors which incorporates the effects of high product and substrate inhibition on the kinetics as well as biomass and product yields. We theoretically investigate the possibility of various dynamic behaviors in the bioreactor over different ranges of operating...
Using genetic algorithms for the construction of phylogenetic trees: application to G-protein coupled receptor sequences.
Many different phylogenetic clustering techniques are used currently. One approach is to first determine the topology with a common clustering method and then calculate the branch lengths of the tree. If the resulting tree is not optimal exchanging tree branches can make some local c...
Consciousness as a self-organizing process: an ecological perspective.
The evolution of consciousness is seen in the context of energy-driven evolution in general, where energy and information are understood as two sides of the same coin. From this perspective consciousness is viewed as an ecological system in which streams of cognitive, perceptual, and emotional infor...
Social information: the person is the message.
Assumptions that Shannon's concepts cannot extend to social systems are challenged by showing that social information measures the reduced uncertainties individuals have about the systemic effects of each other's behavior. The 'meaning' of individual actions is their collective consequences, which a...
Gamma oscillations by synaptic inhibition in a homogeneous medium model of hippocampal interneurons.
Population of interacting inhibitory hippocampal neurons is described by a continuous model. The explicit equation for the frequency of synchronized neural firing and the condition for its stability are obtained. The results of their numerical solution are in quantitative agreement with the data of...
The genetic code as a Golden mean determined system.
For the first time it is shown that the genetic code, as a binary code, is determined by Golden mean through the unity of the binary-code tree and the Farey tree, corresponding to the Watson-Crick table and Gray code model of the genetic code at the same time. On the other hand, the Golden mean rela...
A quantum-theoretical approach to the phenomenon of directed mutations in bacteria (hypothesis).
I propose that the explanation of this phenomenon should not rely on any special 'mechanism' for the appearance of directed mutations, but rather should be based on the principles of quantum theory. I consider a physical model of adaptation whereby a polarized photon, passing through a polarizer, ch...
Some remarks on the experimental realization of a mind machine.
The brain not only makes use of measuring apparatuses, but perhaps has the potential to serve as one itself. Since Einstein-Podolsky-Rosen correlations must be absent between observer and object in order for a quantum state to become reducible, it is tempting to perturb measurements by changing the...
Computational properties of self-reproducing growing automata.
Living organisms perform much better than computers at solving complex, irregular computational tasks, like search and adaptation. Key features of living organisms, identified in the paper as a basis for their success in solving complex problems, are: self-reproduction of cells, flexible framework,...