PIECEWISE

作品数:318被引量:354H指数:7
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相关领域:自动化与计算机技术理学更多>>
相关作者:刘敏王旭黄博许雪峰廖斌更多>>
相关机构:重庆交通大学南京理工大学成都东软信息技术学院湖北大学更多>>
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相关基金:国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家教育部博士点基金更多>>
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Convergence and Stability of the Truncated Euler-Maruyama Method for Stochastic Differential Equations with Piecewise Continuous Arguments被引量:3
《Numerical Mathematics(Theory,Methods and Applications)》2021年第1期194-218,共25页Yidan Geng Minghui Song Yulan Lu Mingzhu Liu 
This work is supported by the National Natural Science Foundation of China(No.11671113);the National Postdoctoral Program for Innovative Talents(No.BX20180347).
In this paper,we develop the truncated Euler-Maruyama(EM)method for stochastic differential equations with piecewise continuous arguments(SDEPCAs),and consider the strong convergence theory under the local Lipschitz c...
关键词:Stochastic differential equations with piecewise continuous argument local Lips-chitz condition Khasminskii-type condition truncated Euler-Maruyama method convergence and stability 
Simultaneous Approximation of Sobolev Classes by Piecewise Cubic Hermite Interpolation被引量:2
《Numerical Mathematics(Theory,Methods and Applications)》2014年第3期317-333,共17页Guiqiao Xu Zheng Zhang 
supported by the National Natural Science Foundations of China(Grant No.11271263).
For the approximation in L_(p)-norm,we determine the weakly asymptotic orders for the simultaneous approximation errors of Sobolev classes by piecewise cubic Hermite interpolation with equidistant knots.For p=1,∞,we ...
关键词:Piecewise cubic Hermite interpolation L_(p)-norm simultaneous approximation equidistant knot infinite-dimensional Kolmogorov width 
3D Multiphase Piecewise Constant Level Set Method Based on Graph Cut Minimization被引量:2
《Numerical Mathematics(Theory,Methods and Applications)》2009年第4期403-420,共18页Tiril P Gurholt Xuecheng Tai 
support from the Centre for Integrated Petroleum Research(CIPR),University of Bergen, Norway,and Singapore MOE Grant T207B2202;NRF2007IDMIDM002-010
Segmentation of three-dimensional(3D) complicated structures is of great importance for many real applications.In this work we combine graph cut minimization method with a variant of the level set idea for 3D segmenta...
关键词:Piecewise constant level set method energy minimization graph cut SEGMENTATION three-dimensional. 
Approximation of Derivative for a Singularly Perturbed Second-Order ODE of Robin Type with Discontinuous Convection Coefficient and Source Term
《Numerical Mathematics(Theory,Methods and Applications)》2009年第1期100-118,共19页R.Mythili Priyadharshini N.Ramanujam 
the Council of Scientific and Industrial Research,New Delhi,India for its financial support.
In this paper, a singularly perturbed Robin type boundary value problem for second-order ordinary differential equation with discontinuous convection coefficient and source term is considered. A robust-layer-resolving...
关键词:Singular perturbation problem piecewise uniform mesh discrete derivative discontinuous convection coefficient Robin boundary conditions discontinuous source term. 
A Parameter-Uniform Finite Difference Method for a Coupled System of Convection-Diffusion Two-Point Boundary Value Problems被引量:3
《Numerical Mathematics(Theory,Methods and Applications)》2008年第2期176-197,共22页Eugene O'Riordan Jeanne Stynes Martin Stynes 
A system of m (≥2) linear convection-diffusion two-point boundary value problems is examined,where the diffusion term in each equation is multiplied by a small parameterεand the equations are coupled through their c...
关键词:Singularly perturbed CONVECTION-DIFFUSION coupled system piecewise-uniform mesh 
Finite-Difference Methods for a Class of Strongly Nonlinear Singular Perturbation Problems
《Numerical Mathematics(Theory,Methods and Applications)》2008年第2期235-244,共10页Relja Vulanovi 
The paper is concerned with strongly nonlinear singularly perturbed bound- ary value problems in one dimension.The problems are solved numerically by finite- difference schemes on special meshes which are dense in the...
关键词:Boundary-value problem singular perturbation finite differences Bakhvalov and piecewise equidistant meshes L^1 stability 
A MULTI-GRID ALGORITHM FOR MIXED PROBLEMS WITH PENALTY BY C°-PIECEWISE LINEAR ELEMENT APPROXIMATION
《Numerical Mathematics A Journal of Chinese Universities(English Series)》1997年第2期121-131,共11页黄自萍 
This work was supported by China State Major Key Project for Basic Researches
In this paper we describe a multi-grid algorithm for mixed problems with penalty by the linear finite element approximation. It is proved that the convergence rate of the algorithm is bound ed away from 1 independentl...
关键词:Multi-grid ALGORITHM MIXED problem problems with PENALTY linear ELEMENT approxi mation. 
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