Manuela La Rosa

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The running economy of seventeen athletes was studied during running at a low speed (3.3 m · s−1) on a motor-driven treadmill. The net energetic cost during running expressed in kJ·kg−1·km−1 was on average 4.06. As expected, a positive relationship was found between the energetic cost and the percentage of fast twitch fibres (r=0.60,n=17,p<0.01). In(More)
In this paper, systems formed by networks of simple nonlinear cells are studied. Using lattice models, some of the fundamental features of complex systems such as self-organization and pattern formation are illustrated. In the first part of this work, a lattice of identical Chua’s circuit is used to experimentally study its global spatiotemporal dynamics,(More)
Magnetoencephalography (MEG) brain signals are studied using a method for characterizing complex nonlinear dynamics. This approach uses the value of d(infinity) (d-infinite) to characterize the system's asymptotic chaotic behavior. A novel procedure has been developed to extract this parameter from time series when the system's structure and laws are(More)
In this paper, we consider coupled quantum-dot cells, which are usually used for quantum-dot cellular automata, to build nanoscale dynamical systems. In particular, it is shown how the simple connection of few quantum-dot cells, quantum cellular nonlinear networks (Q-CNNs), can cause the onset of chaotic oscillations. Complex dynamics can be obtained only(More)
A new strategy to identify the independent dynamics of spatially extended nonlinear networks is proposed. Starting from spatial modes theory an index has been defined as the number of relevant spatial modes and therefore identifies the system degree of freedom. The proposed methodology is validated by quantifying self-synchronization in three(More)
In this paper, we investigate the role of topology on synchronization, a fundamental feature of many technological and biological fields. We study it in Hindmarsh-Rose neural networks, with electrical and chemical synapses, where neurons are placed on a bi-dimensional lattice, folded on a torus, and the synapses are set according to several topologies. In(More)