Results 61 to 70 of about 1,621,387 (189)

Uniform estimate for characteristics-mixed finite element method for two-dimensional advection-dominated transport problems

Advances in Difference Equations, 2017
In this paper, we prove uniform optimal-order error estimates for characteristics-mixed finite element methods for two-dimensional convection-dominated diffusion equations.
Lei Gao, Fuji Xie
doaj   +1 more source

Equivalent diagrams of fractional order elements [PDF]

Archives of Control Sciences
This paper presents equivalent impedance and operator admittance systems for fractional order elements. Presented models of fractional order elements of the type: s α L α and 1/s α C α, (0 α 1) were obtained using the Laplace transform based on the ...
Sebastian Różowicz, Maciej Włodarczyk, Andrzej Zawadzki   +2 more
doaj   +1 more source

Ultrafine aerosol generation from free falling nanopowders : experiments and numerical modelling [PDF]

, 2008
In the last few years, the interest on nanomaterials and their applications have increased in a considerable way. Hence, the knowledge of the possible hazards on human health becomes necessary.
Biscans, Béatrice, Climent, Éric, Ibaseta, Nelson   +2 more
core  

Towards a standardization of non-symbolic numerical experiments: GeNEsIS, a flexible and user-friendly tool to generate controlled stimuli. [PDF]

Behav Res Methods, 2022
Zanon M, Potrich D, Bortot M, Vallortigara G.   +3 more
europepmc   +1 more source

Exact Simulation of Wishart Multidimensional Stochastic Volatility Model [PDF]

, 2013
In this article, we propose an exact simulation method of the Wishart multidimensional stochastic volatility (WMSV) model, which was recently introduced by Da Fonseca et al. \cite{DGT08}.
Kang, Chulmin, Kang, Wanmo
core  

Development of Knife-Edge Ridges on Ion-Bombarded Surfaces

, 2012
We demonstrate in both laboratory and numerical experiments that ion bombardment of a modestly sloped surface can create knife-edge like ridges with extremely high slopes.
Aziz, Michael J., Bertozzi, Andrea L., Brenner, Michael P., Holmes-Cerfon, Miranda, Zhou, Wei   +4 more
core   +1 more source

Numerical solutions of a boundary value problem on the sphere using radial basis functions [PDF]

, 2016
Boundary value problems on the unit sphere arise naturally in geophysics and oceanography when scientists model a physical quantity on large scales. Robust numerical methods play an important role in solving these problems.
Gia, Quoc Thong Le
core  

Data assimilation in 2D hyperbolic/parabolic systems using a stabilized explicit finite difference scheme run backward in time

Applied Mathematics in Science and Engineering
An artificial example of a coupled system of three nonlinear partial differential equations generalizing 2D thermoelastic vibrations, is used to demonstrate the effectiveness, as well as the limitations, of a non iterative direct procedure in data ...
Alfred S. Carasso
doaj   +1 more source

A machine learning framework for data driven acceleration of computations of differential equations

, 2018
We propose a machine learning framework to accelerate numerical computations of time-dependent ODEs and PDEs. Our method is based on recasting (generalizations of) existing numerical methods as artificial neural networks, with a set of trainable ...
Mishra, Siddhartha
core   +1 more source

Numerical Experiments in Collisionless Systems [PDF]

International Astronomical Union Colloquium, 1971
Gravitational n-body calculations handling 105 particles have become routine in the last three or four years. The plasma physicists have also run calculations with comparable numbers of particles – you will hear of these from Dawson this afternoon. In the stellar dynamics area, two groups have been making these calculations – our own group with Kevin ...
openaire   +1 more source