arXiv
(509,308 recursos)
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64.
Features and dimensions: Motion estimation in fly vision - Bialek, William; van Steveninck, Rob R. de Ruyter
We characterize the computation of motion in the fly visual system as a
mapping from the high dimensional space of signals in the retinal photodetector
array to the probability of generating an action potential in a motion
sensitive neuron.
65.
Noise-enhanced computation in a model of a cortical column - Mayor, Julien; Gerstner, Wulfram
It has been conjectured in the literature that this effect, known as
stochastic resonance, may take place in central cognitive processes such as the
memory retrieval of arithmetical multiplication.
66.
Wiring cost in the organization of a biological network - Ahn, Yong-Yeol; Kim, Beom Jun; Jeong, Hawoong
To find out the role of the wiring cost in the organization of the neural
network of the nematode \textit{Caenorhapditis elegans} (\textit{C.
67.
Simulation of geographical trends in Chowdhury ecosystem model - Rohde, Klaus; Stauffer, Dietrich
Complexity of foodwebs increases with time and at a higher rate at low
latitudes, and there is a higher rate of species creation at low latitudes.
68.
Diversity as a product of interspecial interactions - Lawson, Daniel; Jensen, Henrik Jeldtoft; Kaneko, Kunihiko
We demonstrate diversification rather than optimisation for highly
interacting organisms in a well mixed biological system by means of a simple
model and reference to experiment, and find the cause to be the complex network
of interactions formed, allowing species less well adapted to an environment to
flourish by co-interaction over the `best' species.
69.
A Predation Behavior Model Based on Game Theory - Chen, Shi; Bao, Sheng; Yan, Ling; Huang, Cheng
This article adopts game theory to build a model for explaining the predation
behavior of animals.We assume that both the prey and the preydator have two
stratigies in this game,the active one and the passive one.By calculating the
outcome and the income of energy in different stratigies, we find the solution
to analyze the different evolution path of both the prey and the predator.A
simulation result approximately represents the correctness of our model.
71.
Traveling wave solutions of Fitzhugh model with cross-diffusion - Berezovskaya, F.; Camacho, E.; Wirkus, S.; Karev, G.
In this paper, we
utilize a modified version of the Fitzhugh-Nagumo equations to model the
spatial propagation of neuron firing; we assume that this propagation is (at
least, partially) caused by the cross-diffusion connection between the
potential and recovery variables.
72.
Dynamics of inhomogeneous populations and global demography models - Karev, Georgy P.
The dynamic theory of inhomogeneous populations developed during the last
decade predicts several essential new dynamic regimes applicable even to the
well-known, simple population models.
73.
Spatial dynamics of homochiralization - Multamaki, Tuomas; Brandenburg, Axel
The emergence and spreading of chirality on the early Earth is considered by
studying a set of reaction-diffusion equations based on a polymerization model.
75.
Maximum Likelihood Jukes-Cantor Triplets: Analytic Solutions - Chor, Benny; Hendy, Michael D.; Snir, Sagi
Complex systems of polynomial equations have to be set up and solved
algebraically in order to obtain analytic solutions for maximum likelihood on
phylogenetic trees.
77.
Mesoscopic modeling for nucleic acid chain dynamics - Sales-Pardo, M.; Guimera, R.; Moreira, A. A.; Widom, J.; Amaral, L. A. N.
As a step toward this aim, we present
here a novel mesoscopic-level computational model that provides a new window
into nucleic acid dynamics.
78.
Robustness and Evolvability of the B Cell Mutator Mechanism - Theodosopoulos, Patricia; Theodosopoulos, Ted
We present a model that considers the maturation of the antibody population
following primary antigen presentation as a global optimization problem.
79.
Giant viruses in the oceans : the 4th Algal Virus Workshop - Claverie, Jean-Michel
Giant double-stranded DNA viruses (such as record breaking Acanthamoeba
polyphaga Mimivirus), with particle sizes of 0.2 to 0.6 micron, genomes of 300
kbp to 1.200 kbp, and commensurate complex gene contents, constitute an
evolutionary mystery.
80.
Mutation model for nucleotide sequences based on crystal basis - Minichini, C.; Sciarrino, A.
A master equation for the
distribution function is written, where the intensity of the one-spin flip is
assumed to depend from the variation of the labels of the state.
61.
