191 citations · 2.5k across the 66 of their papers we have counts for
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Asymptotic regime in N random interacting species
A. Fiasconaro, D. Valenti, B. Spagnolo
The asymptotic regime of a complex ecosystem with \emph{N}random interacting species and in the presence of an external multiplicative noise is analyzed. We find the role of the ex…
Nonmonotonic Pattern Formation in Three Species Lotka-Volterra System with Colored Noise
A. Fiasconaro, D. Valenti, B. Spagnolo
A coupled map lattice of generalized Lotka-Volterra equations in the presence of colored multiplicative noise is used to analyze the spatiotemporal evolution of three interacting s…
A Simple Noise Model with Memory for Biological Systems
O. Chichigina, D. Valenti, B. Spagnolo
A noise source model, consisting of a pulse sequence at random times with memory, is presented. By varying the memory we can obtain variable randomness of the stochastic process. T…
Moment Equations for a Spatially Extended System of Two Competing Species
D. Valenti, L. Schimansky-Geier, X. Sailer +1
The dynamics of a spatially extended system of two competing species in the presence of two noise sources is studied. A correlated dichotomous noise acts on the interaction paramet…
Role of Noise in a Market Model with Stochastic Volatility
G. Bonanno, D. Valenti, B. Spagnolo
We study a generalization of the Heston model, which consists of two coupled stochastic differential equations, one for the stock price and the other one for the volatility. We con…
Role of the Colored Noise in Spatio-Temporal Behavior of Two Competing Species
D. Valenti, A. Fiasconaro, B. Spagnolo
We study the spatial distributions of two randomly interacting species, in the presence of an external multiplicative colored noise. The dynamics of the ecosystem is described by a…