Results 21 to 30 of about 167 (129)
Postprocessing finite-element methods for the Navier–Stokes Equations: the Fully discrete case [PDF]
, 2008 An accuracy-enhancing postprocessing technique for finite-element discretizations of the Navier–Stokes equations is analyzed. The technique had been previously analyzed only for semidiscretizations, and fully discrete methods are addressed in the ...
Novo, Julia +6 more
core +1 more source
On some Boussinesq systems in two space dimensions : theory and numerical analysis [PDF]
, 2007 A three-parameter family of Boussinesq type systems in two space dimensions is considered. These systems approximate the three-dimensional Euler equations, and consist of three nonlinear dispersive wave equations that describe two-way propagation of long
Jean-Claude Saut +5 more
core +2 more sources
An Error Indicator for Semidiscrete Schemes [PDF]
, 2006 The eectiv eness of adaptive mesh renemen t strategies (AMR) relies heavily on the quality of the indicator that drives the process of mesh renemen t and coarsening. In this work, an indicator based on the local production of entropy is proposed, extending previous work by the authors on one-dimensional schemes, based on staggered cells.
D. MAROBIN, PUPPO, GABRIELLA ANNA
openaire +4 more sources
Method of semidiscretization in time for quasilinearintegrodifferential equations [PDF]
International Journal of Mathematics and Mathematical Sciences, 2004 We consider a class of quasilinear integrodifferential equations in a reflexive Banach space. We apply the method of semidiscretization in time to establish the existence, uniqueness, and continuous dependence on the initial data of strong solutions.
D. Bahuguna, Reeta Shukla
openaire +3 more sources
Image Processing in the Semidiscrete Group of Rototranslations [PDF]
, 2015 It is well-known, since [12], that cells in the primary visual cortex V1 do much more than merely signaling position in the visual field: most cortical cells signal the local orientation of a contrast edge or bar – they are tuned to a particular local orientation.
Prandi, Dario +2 more
openaire +3 more sources
Convergence of a two-grid algorithm for the control of the wave equation [PDF]
, 2009 We analyze the problem of boundary observability of the finite-difference space semidiscretizations of the 2-d wave equation in the square.We prove the uniform (with respect to the meshsize) boundary observability for the solutions obtained by the two ...
Ignat, L.I., Zuazua, E.
core +2 more sources
Highly efficient strong stability preserving Runge-Kutta methods with Low-Storage Implementations [PDF]
, 2008 Strong stability-preserving (SSP) Runge–Kutta methods were developed for time integration of semidiscretizations of partial differential equations. SSP methods preserve stability properties satisfied by forward Euler time integration, under a modified ...
Ketcheson, David I.
core +1 more source
On the continuum limit for a semidiscrete Hirota equation [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016 In this paper, we propose a new semidiscrete Hirota equation which yields the Hirota equation in the continuum limit. We focus on the topic of how the discrete space step δ affects the simulation for the soliton solution to the Hirota equation. The Darboux transformation and explicit solution
Andrew Pickering +2 more
openaire +2 more sources
Semidiscretization for Time-Delayed Neural Balance Control [PDF]
SIAM Journal on Applied Dynamical Systems, 2015 Summary: The observation that time-delayed feedback can stabilize an inverted pendulum motivates the formulation of models of human balance control in terms of Delay Differential Equations (DDEs). Recently the intermittent, digital-like nature of the neural feedback control of balance has become evident.
Tamás Insperger +2 more
openaire +3 more sources
Stability of rational multistep approximations of holomorphic semigroups
, 1995 In this paper we prove the stability of semidiscretizations in time of holomorphic semigroups in Banach spaces by means of A ( α ) {\text {A}}(\alpha ) -stable rational multistep methods.
C. Palencia
core +1 more source