搜索结果: 31-45 共查到“知识库 随机数值实验”相关记录45条 . 查询时间(4.375 秒)
We construct a time-consistent sublinear expectation in the setting of volatility uncertainty. This mapping extends Peng’s G-expectation by allowing the range of the volatility uncertainty to be stoch...
Fluctuations of the extreme eigenvalues of finite rank deformations of random matrices
Fluctuations of the extreme eigenvalues finite rank deformations of random matrices
2010/11/26
Consider a deterministic self-adjoint matrix Xn with spectral measure converging to a compactly supported probability measure, the largest and smallest eigenvalues converging to the edges of the limit...
Generalized Eigenvalue Problems with Prespecified Eigenvalues
Pencils eigenvalues optimization of singular values inverse eigenvalue
2010/12/3
We consider the distance from a pencil AB (square or non-square) to the nearest
pencil (A + A) B in 2-norm that has the prespeci ed eigenvalues 1; : : : ; ` with
algebraic...
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)...
Perturbation theory for a stochastic process with Ornstein-Uhlenbeck noise
Noise diffusion annihilation/creationo perators
2010/4/8
The Ornstein-Uhlenbeck process may be used to generate a noise signal with a finite correlation time. If a one-dimensional stochastic process is driven by such a noise source, it may be analysed by so...
Feedback-dependent control of stochastic synchronization in coupled neural systems
Synchronization noise coupling time-delayedfeed-back
2010/4/7
We investigate the synchronization dynamics of two coupled noise-driven FitzHugh-Nagumo systems, representing two neural populations. For certain choices of the noise intensities and coupling strength...
Dispersion and collapse in stochastic velocity fields on a cylinder
Turbulence Lagrangian trajectories Kraichnan ensemble Cylindrical manifolds
2010/4/7
The dynamics of fluid particles on cylindrical manifolds is investigated. The velocity field is obtained by generalizing the isotropic Kraichnan ensemble, and is therefore Gaussian and decorrelated in...
关于随机选取法及其对不定常激波的计算
计算 不定常激波 随机选取法
2009/10/26
A. J. Chorin and G. A. Sod. developed in these years the so called random choicemethod or Glimm-Chorin method. There are only a few papers on,this method.Further test or analysis of the method is desi...
一类长周期的伪随机数序列
伪随机数序列 长周期
2009/10/23
This paper deals with the period T of pseudorandom number sequence gener- ated by subtract- with borrow (SWB ). For the selected base b,legs r > s it is shown that T is dependent only on b, r and s an...
一个数值天气预报模式的并行混合编程模型及其应用
混合编程模型 预报模式 数值天气
2009/10/23
提出了一个适用于数值天气预报模式的并行混合编程模型,归纳出混合并行算法设计的特点.依据该模型,针对国内发展的区域数值天气预报模式,开发基于MPI/OpenMP的并行版本.通过对五种并行方案的并行性能分析比较,发现其结果同抽象模型的分析结论是一致的.
通过对随机动力系统极限行为的研究,推广了传统动力系统的相关定义和理论.由于在无界区域上,Sobolev紧嵌入的缺乏,Crauel, Debussche及Flandoli 等人在研究有界区域上的随机演化系统时所引入的渐近紧的概念不再适用.通过对Ladyzhenskaya,~Rosa等人在对确定性系统的研究中所提出的渐近紧概念的推广,引入了随机动力系统渐近紧的概念,并以相应的示例及严格的理论推导证明了...
CALCULATION OF NAMBU MECHANICS
2007/12/12
In this paper, a fundamental fact that Nambu mechanics is source
free was proved. Based on this property, and via the idea of
prolongation, finite dimensional Nambu system was prolonged to
differen...
复杂系统数据挖掘的多尺度混合算法
演化计算 复杂系统 时间序列预测 多尺度动态预测系统
2007/3/26
任何复杂系统都要受到某些基本规律的约束，包括宏观、中观与微观的多层次规律的约束。怎样从一个系统的这些偶然现象（观测数据）中找出它的必然规律，是知识发现（KDD）与数据挖掘（DM）的首要任务，也是研究目标。建立了一个基于演化计算与自然分形相结合的多尺度的动态预测系统。它以微分方程描述系统的宏观行为，以自然分形刻画系统的微观行为。同时，以股票市场数据（君安证券股票数据）和科学观测数据（武汉汛期雨量数据...