Istituto per le Applicazioni del Calcolo
"Mauro Picone"
Articolo in rivista
ISODAC: A high performance solution for indexing and searching heterogeneous data |
Searching for words or sentences within large sets of textual documents can be very challenging unless an index of the data has been created in advance. However, indexing can be very time consuming especially if the text is not readily available and has to be extracted from files stored in… | |
Universality of anisotropic turbulence |
We review some ideas about the physics of small-scale turbulent statistics, focusing on the scaling behavior of anisotropic fluctuations. We present results from direct numerical simulations of three-dimensional homogeneous, anisotropically forced, turbulent systems: the RayleighBénard system, the… | |
Nonresonant bilinear forms for partially dissipative hyperbolic systems violating the Shizuta-Kawashima condition |
In the context of hyperbolic systems of balance laws, the Shizuta-Kawashima coupling condition guarantees that all the variables of the system are dissipative even though the system is not totally dissipative. Hence it plays a crucial role in terms of sufficient conditions for the global in time… | |
Mining Relevant Information on the Web: A Clique Based Approach |
The role of information management and retrieval in production processes has been gaining in importance in recent years. In this context, the ability to search for and quickly find the small piece of information needed from the huge amount of information available has crucial importance. One… | |
Analysis of the flow field around a rudder in the wake of a simplified marine propeller |
The vortex-body interaction problem, that characterizes the flow field of a rudder placed downstream of a single-blade marine rotor, is investigated by numerical simulations. The particular topology of the propeller wake, consisting of a helicoidal vortex detached from the blade tips (tip vortex)… | |
Pumping a swing by standing and squatting: do children |
We set a control model to study the biomechanical problem of swing pumping. After describing the sytem, we provide the solution to some optimal control problems. | |
Existence and uniqueness for a p-laplacian nonlinear eigenvalue problem |
We consider the Dirichlet eigenvalue problem, (the eigenfunction) and ? > 0 (the eigen value), ? is an arbitrary domain in RN with finite measure, 1 < p < ?, 1 < q < p*, p* = Np/(N - p) if 1 < p < N and p* = ? if p >= N. We study several existence and uniqueness results as… | |
Fast deconvolution with approximated PSF by RSTLS with antireflective boundary conditions |
The problem of reconstructing signals and images from degraded ones is considered in this paper. The latter problem is formulated as a linear system whose coefficient matrix models the unknown point spread function and the right hand side represents the observed image. Moreover, the coefficient… | |
Hybrid lattice Boltzmann method on overlapping grids |
In this work, a hybrid lattice Boltzmann method (HLBM) is proposed, where the standard lattice Boltzmann implementation based on the Bhatnagar-Gross-Krook (LBGK) approximation is combined together with an unstructured finite-volume lattice Boltzmann model. The method is constructed on an… | |
Divide & Conquer Algorithms for Computing the Eigendecomposition of Symmetric Diagonal-plus-Semiseparable Matrices |
