搜索结果: 1-13 共查到“应用数学 computation”相关记录13条 . 查询时间(0.038 秒)
三亚国际数学论坛：Mathematical Model and Computation of Nonlinear Problems
三亚国际数学论坛 Mathematical Model Computation of Nonlinear Problems
2017/11/24
The nonlinear problem is an important and interesting topic in many research fields. For example, the nonlinear optics model can more accurately describe the light propagation at very high intensities...
2017北大计算与大数据分析研讨会（2017 PKU Workshop on Computation and Big Data Analysis）
2017 北大计算与大数据分析 研讨会
2017/4/24
The rapid growth of data starts to inflict a major impact in many fields such as computational mathematics, optimization, statistics, computer science, etc. Big data analysis is a new and exciting dir...
Fast geodesics computation with the phase flow method
Geodesics Weighted geodesics Geodesic flow The phase flow method Manifolds Tangent bundles Charts Surface parameterization Spline interpolation
2015/7/14
This paper introduces a novel approach for rapidly computing a very large number of geodesics on a smooth surface.The idea is to apply the recently developed phase flow method [L. Ying, E.J. Cande `s,...
A FAST BUTTERFLY ALGORITHM FOR THE COMPUTATION OF FOURIER INTEGRAL OPERATORS
Fourier integral operators butterfly algorithm dyadic partitioning Lagrange interpolation separated representation multiscale computations
2015/7/14
This paper is concerned with the fast computation of Fourier integral operators of the general form Rd e2πıΦ(x,k)f(k)dk, where k is a frequency variable, Φ(x, k) is a phase function obeying a st...
FAST COMPUTATION OF PARTIAL FOURIER TRANSFORMS
fast Fourier transform multiscale decomposition butterfly algorithm fractional Fourier transform wave extrapolation
2015/7/14
This paper is concerned with the evaluation of the partial Fourier transform ux =|k|in one and two dimensions. The motivating application is the wave extrapolation procedure in ...
FAST COMPUTATION OF FOURIER INTEGRAL OPERATORS
Fourier integral operators generalized Radon transform separated representation nonuniform fast Fourier transform matrix approximation operator compression randomized algorithms reflection seismology
2015/7/14
We introduce a general purpose algorithm for rapidly computing certain types of oscillatory integrals which frequently arise in problems connected to wave propagation, general hyperbolic equations, an...
FAST DIRECTIONAL COMPUTATION OF HIGH FREQUENCY BOUNDARY INTEGRALS VIA LOCAL FFTs
boundary integral method scattering high frequency waves directional algorithm low-rank approximation Chebyshev interpolation fast Fourier transforms
2015/7/14
The boundary integral method is an efficient approach for solving time-harmonic acoustic obstacle scattering problems. The main computational task is the evaluation of an oscillatory boundary integral...
Computation of Lyapunov exponents for dynamical system with impact
Computation Lyapunov exponents dynamical system impact
2010/9/20
Computation of Lyapunov exponents for dynamical system with impact.
Numerical computation of the eigenstructure of cylindrical acoustic waveguides with heated (or cooled) walls
acoustic waveguides temperature gradient
2010/9/13
A perturbation procedure for the modes and cut-off frequencies of cylindrical acoustic waveguides of arbitrary cross-section with a small temperature gradient along the walls was presented in [1, 2]. ...
Computation of area and number frequency dimensions of mountains extracted from multiscale digital elevation models
multiscale digital elevation models (DEMs) mountains lifting scheme
2010/9/15
Frequency dimension is used to characterize fractals that come as distinct individual
objects which are spread over a range of space. In this paper, the number and area
frequency dimensions of mount...
On the computation of the Hausdorff metric between digitised images in three dimensions
fractals Hausdorff metric image comparison
2010/9/14
Efficient and fast solutions to the problem of computing the Hausdorff metric between two arbitrary grey-scale, digitised images are considered. The more efficient of the techniques proposed here cons...
Two dimensional free surface flow computation
free surface flow surface tension Cauchy integral
2010/9/16
A two-dimensional free surface potential flow of a liquid poured from a container is calculated when the liquid runs along the underside of the spout. The effect of surface tension is taken into consi...
Lattice computation of energy moments in canonical and Gaussian quantum statistics
Lattice computation of energy canonical Gaussian quantum statistics
2010/11/2
We derive a lattice approximation for a class of equilibrium quantum statistics describing the behaviour of any combination and number of bosonic and fermionic particles with any sufficiently binding...