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数值模式的模拟和预测仍然存在较大的不确定性，其中物理参数的不确定性是导致该类不确定性的重要来源之一。由于模式中包含大量的物理参数，减少所有物理参数的不确定性以提高模式的模拟能力和预测技巧将耗费大量的人力和物力。因此，识别敏感的物理参数或参数组合至关重要。
布尔网络的能观性准则
布尔网络 离散数学 能观性准则
2023/1/4
This article investigates observability of Boolean control networks (BCNs) and probabilistic Boolean networks (PBNs). First, weak observability of BCNs is discussed via the nonaugmented approach. The ...
T-2环面上随机不可压缩欧拉方程的一个分裂半隐欧拉方法
T-2环面 随机不可压缩 欧拉方程 分裂半隐欧拉方法
2023/1/4
The main difficulty in studying numerical method for stochastic evolution equations (SEEs) lies in the treatment of the time discretization (J. Printems. [ESAIM Math. Model. Numer. Anal. (2001)]). Alt...
This paper is concerned with the asymptotic stability of a composite wave of two viscous shocks under spatially periodic perturbations for the 1-d full compressible Navier--Stokes equations. It is pro...
影响域近似对非局部模型局部极限的影响
影响域近似 非局部模型 极限
2023/1/4
Many nonlocal models have adopted Euclidean balls as the nonlocal interaction neighborhoods. When solving them numerically, it is sometimes convenient to adopt polygonal approximations of such balls. ...
非线性轴向运动梁的边界稳定性判据
非线性 轴向运动梁 边界稳定性 判据
2023/1/4
This paper deals with, in the framework of absolute stability, boundary stabilization for a nonlinear axially moving beam under boundary velocity feedback controls. The nonlinear boundary control that...
具有完全未知的外系统的热方程的输出跟踪
完全未知 外系统 热方程 输出跟踪
2023/1/4
In this paper, we consider output regulation for a 1-d heat equation where the disturbances generated from an unknown finite-dimensional exosystem enter all possible channels. We adopt adaptive observ...
A line search penalty-free sequential quadratic programming method is proposed for nonlinear equality-constrained optimization. Generally, feasible directions are used to minimize the measurement of t...
可压缩欧拉方程大初值球对称具有正远场密度整体解的存在性
可压缩 欧拉方程 大初值球对称 正远场密度整体解
2023/1/4
We are concerned with the global existence theory for spherically symmetric solutions of the multidimensional compressible Euler equations with large initial data of positive far-field density so that...
一种离散线性系统的量化输出反馈模型参考自适应控制方案
离散线性系统 量化输出反馈模型 自适应控制方案
2023/1/4
This paper presents a quantized output feedback model reference adaptive control (MRAC) scheme for a class of single-input and single-output discrete-time linear time-invariant systems with unknown pa...
针对随机材料的多模态蒙特卡洛均匀化方法
随机材料 多模态 蒙特卡洛方法 均匀化
2023/1/5
In this paper, we propose and analyze a new stochastic homogenization method for diffusion equations with random and fast oscillatory coefficients. In the proposed method, the homogenized solutions ar...
带有少量非分裂纤维的纤维簇的有理点
非分裂纤维 纤维簇 有理点
2023/1/5
We revisit the abstract framework underlying the fibration method for producing rational points on the total space of fibrations over the projective line. By fine-tuning its dependence on external ari...
倒向随机微分方程Sinc-θ数值格式
随机微分方程 Sinc-θ 数值格式
2023/1/5
In this paper, we propose a new family of fully discrete Sinc-$\theta$ schemes for solving backward stochastic differential equations (BSDEs). More precisely, we consider the $\theta$-schemes for the ...
一阶/二阶时间发展方程预条件时空离散矩阵的一致谱分析
时间发展方程 预条件 时空离散矩阵 一致谱分析
2023/1/5
Solving evolutionary equations in a parallel-in-time manner is an attractive topic. The iterative algorithm based on the block $\alpha$-circulant preconditioning technique has shown promising advantag...