搜索结果: 1-15 共查到“计算数学 nonlinear”相关记录17条 . 查询时间(0.125 秒)
Lifting of Characters for Nonlinear Simply Laced Groups
Lifting of Characters Nonlinear Simply Laced Groups
2015/9/28
One aspect of the Langlands program for linear groups is lifting of characters, which relates virtual representations on a group G with those on an endoscopic group for G. The goal of this paper is to...
Designing Optical Fibers: Fitting the Derivatives of a Nonlinear Pde-Eigenvalue Problem
Symmetric Indefinite Eigenvalue Gradient Optical Fiber Design
2013/1/30
When trying to fit data to functions of the eigensystem of a pde-eigenvalue problem, such as Maxwell’s equation, numerical differentiation is ineffective and analytic gradients must be supplied. In ou...
A Nonlinear Conjugate Gradient Algorithm with An Optimal Property and An Improved Wolfe Line Search
conjugate gradient method memoryless BFGS method unconstrained optimization global convergence Wolfe line search
2012/8/10
In this paper, we seek the conjugate gradient direction closest to the direction of the
scaled memoryless BFGS method and propose a family of conjugate gradient methods for
unconstrained optimizatio...
Numerical Approximations of A Nonlinear Eigenvalue Problem and Applications to A Density Functional Model
Eigenvalue Galerkin discretization nonlinear numerical approximation density func- tional orbital-free
2012/8/10
In this paper, we study numerical approximations of a nonlinear eigenvalue problem and consider
applications to a density functional model. We prove the convergence of numerical approximations.
In p...
Multi-symplectic Runge-Kutta-Nystr鰉 Methods for Nonlinear Schr鰀inger Equations
Nonlinear Schr膐dinger equations multi-symplectic methods Runge-Kutta-Nystr膐mmethods charge conservation law
2012/8/7
In this paper, we investigate multi-symplectic Runge-Kutta-Nystr膐m (RKN) methods for non-
linear Schr膐dinger equations. Concatenating symplecitc Nystr膐m methods in spatial direct...
Conservativity of Symplectic Methods for the Ablowitz-Ladik Discrete Nonlinear Schrodinger Equation
Nonlinear Schrdinger Equation Ablowitz-Ladik Model Darboux
2012/8/7
Using several kinds of Darboux transformations, we standardize the non-
canonical symplectic structure of Ablowitz-Ladik model (A-L model) of the
Nonlinear Schr膐dinger Equation (NLSE), then we emplo...
One Approach to Construction of Bilateral Approximations Methods for Solution of Nonlinear Eigenvalue Problems
Nonlinear Eigenvalue Problem Derivatives of Matrix Determinant Numerical Algorithm of Alternate Approximations
2013/1/30
In this paper a new approach to construction of iterative methods of bilateral approximations of eigenvalue is proposed and investigated. The conditions on initial approximation, which ensure the conv...
Nonlinear dynamo in a short Taylor-Couette setup
Finite elements Magnetohydrodynamics Taylor-Couette dynamo action
2012/4/18
It is numerically demonstrated by means of a magnetohydrodynamics code that a short Taylor-Couette setup with a body force can sustain dynamo action. The magnetic threshold is comparable to what is us...
An Upwind Finite Volume Element Method for Nonlinear Convection Diffusion Problem
Nonlinear Convection-Diffusion Tetrahedron Partition Error Estimates
2013/1/30
A class of upwind finite volume element method based on tetrahedron partition is put forward for a nonlinear convection diffusion problem. Some techniques, such as calculus of variations, commutating ...
Haar Wavelet Quasilinearization Approach for Solving Nonlinear Boundary Value Problems
Haar Wavelets Quasilinearization Technique Haar Collocation Method Boundary Value Problems
2013/1/30
Objective of our paper is to present the Haar wavelet based solutions of boundary value problems by Haar collocation method and utilizing Quasilinearization technique to resolve quadratic nonlinearity...
Nonlinear free flexural vibrations of functionally graded rectangular and skew plates under thermal environments
Functionally graded plate nonlinear free vibration aspect ratio temperature gradient index
2011/9/21
Abstract: The nonlinear formulation developed based on von Karman's assumptions is employed to study the free vibration characteristics of functionally graded material (FGM) plates subjected to therma...
Numerical Solution of Nonlinear Fredholm-Volterra Integtral Equations via Piecewise Constant Function by Collocation Method
Nonlinear Fredholm-Volterra Integral Equation Block-Pulse Function, Error Analysis Collocation Points
2013/1/30
In this work, we present a computational method for solving nonlinear Fredholm-Volterra integral equations of the second kind which is based on replacement of the unknown function by truncated series ...
Adaptive Set Observers Design for Nonlinear Continuous-Time Systems: Application to Fault Detection and Diagnosis
Adaptive observers nonlinear continuous-time systems fault detection interval residuals
2011/3/2
The paper deals with joint state and parameter estimation for nonlinear continuous-time systems.
Coupled nonlinear oscillators: metamorphoses of amplitude profiles. The case of the approximate effective equation
Coupled nonlinear oscillators metamorphoses of amplitude profiles approximate effective equation
2010/12/28
We study dynamics of two coupled periodically driven oscillators. Im-portant example of such a system is a dynamic vibration absorber which consists of a small mass attached to the primary vibrating s...
Stochastic Nonlinear Dynamics of Interpersonal and Romantic Relationships
dyadic relational stochastic resonance sustained oscillation mathematical sociology social psychology
2010/4/8
Current theories from biosocial (e.g.: the role of neurotransmitters in behavioral features), ecological (e.g.: cultural, political, and institutional conditions), and interpersonal (e.g.: attachment)...