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We investigate finite difference schemes which approximate 2 × 2 one-dimensional
linear dissipative hyperbolic systems. We show that it is possible to introduce some suitable modifications
in standard upwinding schemes, which keep into account the long-time behavior of the
solutions, to yield… |
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We present a novel approach to the system inversion problem for linear, scalar (i.e. single-input, single-output, or SISO) plants. The problem is formulated as a constrained optimization program, whose objective function is the transition time between the initial and the final values of the system'… |
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A new methodology for the mapping of intertidal terrain morphology is presented. It is based on the use of synthetic aperture radar (SAR) images and the temporal correlation between the SAR backscatter intensity and the water level on the intertidal zone. The proposed methodology does not require… |
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A product quadrature rule, based on the filtered de la Vallée Poussin polynomial approximation, is proposed for evaluating the finite weighted Hilbert transform in [-1,1]. Convergence results are stated in weighted uniform norm for functions belonging to suitable Besov type subspaces. Several… |
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The establishment of thermal diffusion in an Ar-Kr Lennard-Jones mixture is investigated via dynamical non equilibrium molecular dynamics [G. Ciccotti, G. Jacucci, Phys. Rev. Lett. 35, 789 (1975)]. We observe, in particular, the evolution of the density and temperature fields of the system… |
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It is generally accepted that visual perception results from the activation of a feed-forward hierarchy of areas, leading to increasingly complex representations. Here we present evidence for a fundamental role of backward projections to the occipito-temporal region for understanding conceptual… |
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We study the linear post-Newtonian approximation to general relativity
known as gravitoelectromagnetism (GEM); in particular, we examine the
similarities and differences between GEM and electrodynamics.
Notwithstanding some significant differences between them, we find that a special nonstationary… |
