Navegação Ciências Exatas e da Terra por Autor "Brunnet, Leonardo Gregory"
Resultados 1-12 de 12
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cAMP diffusion in Dictyostelium discoideum : a Green’s function method
(2010) [Artigo de periódico]A Green’s function method is developed to approach the spatiotemporal equations describing the cAMP production in Dictyostelium discoideum, markedly reducing numerical calculations times: cAMP concentrations and gradients ... -
Cell sorting based on motility differences
(2011) [Artigo de periódico]Self-propelled particles are used to simulate cell aggregates in a model considering homogeneous adhesion forces between cells and using only motility differences as segregation drivers. The tendency of cells to follow ... -
Cellular automata on high-dimensional hypercubes
(2004) [Artigo de periódico]The emergence of nontrivial collective behavior is studied in large families of cellular automata rules implemented on high-dimensional hypercubes. Evidence is found that the region of rule space where such macroscopic ... -
Coupling of low-frequency modes with the complex ginzburg-landau equation : generalized zakharov equations
(1999) [Artigo de periódico]In this paper we introduce and examine a generalization of the complex Ginzburg-Landau equation (CGLE) where the self-interaction contained in the cubic term is replaced by a coupling involving the original field and a ... -
Differential adhesion between moving particles as a mechanism for the evolution of social groups
(2014) [Artigo de periódico]The evolutionary stability of cooperative traits, that are beneficial to other individuals but costly to their carrier, is considered possible only through the establishment of a sufficient degree of assortment between ... -
Heterogeneous individual motility biases group composition in a model of aggregating cells
(2022) [Artigo de periódico]Aggregative life cycles are characterized by alternating phases of unicellular growth and multicellular development. Their multiple, independent evolutionary emergence suggests that they may have coopted pervasive properties ... -
Magnetic susceptibility and specific heat of the anderson lattice : perturbative expansion around the atomic limit
(1992) [Artigo de periódico]The Green's functions relevant to the periodic Anderson Hamiltonian are calculated via perturbation theory around the atomic limit. The approximation reproduces exact results in three different limits: zero bandwidth, zero ... -
Mean-cluster approach indicates cell sorting time scales are determined by collective dynamics
(2017) [Artigo de periódico]Cell migration is essential to cell segregation, playing a central role in tissue formation, wound healing, and tumor evolution. Considering random mixtures of two cell types, it is still not clear which cell characteristics ... -
Multistability in networks of Hindmarsh-Rose neurons
(2008) [Artigo de periódico]We investigate the dynamical states of a two-dimensional network of Hindmarsh-Rose spiking neurons, in the vicinity of the current threshold where the single neuron becomes active. Each neuron is electrically coupled with ... -
Periodicity and chaos in electrically coupled Hindmarsh-Rose neurons
(2006) [Artigo de periódico]The Hindmarsh-Rose HR system of equations is a model that captures the essential of the spiking activity of biological neurons. In this work we present an exploratory numerical study of the time activities of two HR neurons ... -
Preferential duplication of intermodular hub genes : an evolutionary signature in eukaryotes genome networks
(2013) [Artigo de periódico]Whole genome protein-protein association networks are not random and their topological properties stem from genome evolution mechanisms. In fact, more connected, but less clustered proteins are related to genes that, in ... -
Self-propelled particle model for cell-sorting phenomena
(2008) [Artigo de periódico]A self-propelled particle model is introduced to study cell sorting occurring in some living organisms. This allows us to evaluate the influence of intrinsic cell motility separately from differential adhesion with ...
