62,890 research outputs found
Long time fluctuations at critical parameter of Hopf’s bifurcation
No full textA dynamical system that undergoes a supercritical Hopf’s bifurcation is perturbed by a
multiplicative Brownian motion that scales with a small parameter ε. The random fluctuations
of the system at the critical point are studied when the dynamics starts near equilibrium, in
the limit as ε goes to zero. Under a space–time scaling the system can be approximated by a
2-dimensional process lying on the center manifold of the Hopf’s bifurcation and a slow radial
component together with a fast angular component are identified. Then the critical fluctuations
are described by a ‘‘universal’’ stochastic differential equation whose coefficients are obtained
taking the average with respect to the fast variable
Per una rilettura dell’infanzia. Progetto di ricerca nei nidi e nelle scuole dell’infanzia di Roma e provincia
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Variations in the molecular and physiological characteristics and the virulence of Monilia fructicola, M. Fructigena and M. Laxa isolates
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Application of an ISE procedure in understanding the contribution of milk protein compounds to predict cheese yield coupling NIR and chemical data
No full textRipresa funzionale renale in corso di da infestazione malarica. Presentazione di un caso
No full textPhysiological characterization of Monosporascus cannonballus strains isolated from cucurbit roots
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