搜索结果: 1-15 共查到“知识库 非线性泛函分析”相关记录76条 . 查询时间(3 秒)
In this paper, we investigate the new two-Lévy-index fractional nonlinear Schr？dinger (FNLS) equations with optical lattices, where two fractional derivative terms are introduced to control the diffra...
具有可乘噪声非线性随机波方程的保能量全离散格式
可乘噪声 非线性随机波方程 保能量 全离散格式
2023/1/5
In this paper, we focus on constructing numerical schemes preserving the averaged energy evolution law for nonlinear stochastic wave equations driven by multiplicative noise. We first apply the compac...
基于S-R和分解定理的三维几何非线性无网格法
S-R和分解 三维无网格法 几何非线性
2019/1/4
S-R(strain-rotation)和分解定理克服了经典有限变形理论的一些缺点, 使其可以为几何非线性数值分析提供可靠的理论基础. 对于大变形问题, 由于无网格法(element-free method)避免了对单元网格的依赖, 从而从根本上避免了有限单元法(finite element method, FEM)的单元畸变问题, 保证了求解精度. 因此, 将无网格法和S-R和分解定理结合起来势...
以函数为参量的间歇发酵非线性动力系统及其辨识
非线性动力系统 连续分段线性函数 辨识 间歇发酵
2018/3/12
建立以连续分段线性函数为参量的间歇发酵非线性动力系统, 证明该动力系统的主要性质及解的存在性. 以实验数据拟合得到的光滑曲线为依据, 提出了连续分段线性函数为优化变量的辨识模型, 论述可辨识性. 依状态变量与辨识函数的相关性, 构造求解辨识模型的优化算法, 并给出优化算法的收敛性分析及数值结果.
基于带约束的隐表示非线性形状配准
非线性形状配准 隐表示 尺度约束 带状区域约束
2018/3/12
主要通过对形状进行带约束的隐表示来研究非线性形状配准. 首先, 采用隐函数的零水平集来表示形状, 并结合从整体到局部的策略, 对形状配准问题进行了建模. 其次, 为提高模型精度, 对全局尺度形变和局部非线性形变引入了尺度约束和带状约束. 进一步, 给出了一阶变分, 并应用负梯度流进行数值求解. 最后，多个数据集上与现有经典算法的对比实验表明, 给出的算法具有更优的精度.
针对一类非线性零和微分对策问题, 本文提出了一种事件触发自适应动态规划(event-triggered adaptive dynamic programming, ET--ADP)算法在线求解其鞍点. 首先, 提出一个新的自适应事件触发条件. 然后, 利用一个输 入为采样数据的神经网络(评价网络)近似最优值函数, 并设计了新型的神经网络权值更新律使得值函数、控制策略 及扰动策略仅在事件触发时刻同步...
Averaging of incompressible ows on two-dimensional surfaces
two-dimensional surfaces incompressible
2015/9/29
We consider a process on a compact two-dimensional surface which consists
of the fast motion along the stream lines of an incompressible periodic vector eld
perturbed by white noise. It gives rise ...
NONLINEAR MAXIMUM PRINCIPLES FOR DISSIPATIVE LINEAR NONLOCAL OPERATORS AND APPLICATIONS
NONLINEAR MAXIMUM PRINCIPLES DISSIPATIVE LINEAR NONLOCAL OPERATORS APPLICATIONS
2014/4/3
We obtain a family of nonlinear maximum principles for linear dissipative nonlocal operators,that are general, robust, and versatile. We use these nonlinear bounds to provide transparent proofs of glo...
带跳跃非线性项的p-Laplacian问题的结点解
Fuč ik谱 结点解 跳跃非线性项
2014/5/5
研究了带跳跃非线性项的p-Laplacian方程结点解的存在性.如果该问题的非线性项跨越其对应齐次问题的Fučik谱,我们证明了该问题至少存在一个结点解.
非线性扰动薛定谔耦合系统的冲击波解
薛定谔系统 冲击波 渐近解
2014/1/8
研究一类非线性扰动薛定谔耦合系统. 利用泛函映射方法及精确解与近似解相关联的技巧, 讨论对应典型的耦合系统. 利用变分迭代原理和近似方法得到了扰动薛定谔耦合系统的冲击波渐近解, 并得到相关物理量的近似式.
Oriented Associativity Equations and Symmetry Consistent Conjugate Curvilinear Coordinate Nets
Oriented Associativity Equations Symmetry Consistent Conjugate Curvilinear Coordinate Nets Exactly Solvable and Integrable Systems
2012/4/26
This paper is devoted to description of the relationship among oriented associativity equations, symmetry consistent conjugate curvilinear coordinate nets, and the widest associated class of semi- Ham...
Reducing scattering problems under cone potentials to normal form by global canonical transformations
scattering problems cone normal form global canonical transformations Exactly Solvable and Integrable Systems
2012/4/26
We introduce a class of Hamiltonian scattering systems which can be reduced to the "normal form" $\dot P=0$, $\dot Q=P$, by means of a global canonical transformation $ (P,Q)=A(p,q), p,q\in R^n$, defi...
一类二阶非线性非自治混合型泛函微分方程的次调和周期解的存在性
变分结构 临界点 算子方程 次微分 次调和周期解 二阶混合型非线性泛函微分方程
2011/9/14
本文通过引入下半连续凸泛函的次微分和共轭泛函，用临界点理论和算子理论方法，得出了二阶非线性非自治混合型泛函微分方程的多重次调和周期解。
Predicted charged charmonium-like structures in the hidden-charm dipion decay of higher charmonia
charmonium-like structures hidden-charm dipion decay higher charmonia
2011/7/21
In this work, we predict two charged charmonium-like structures close to the $D^\ast\bar{D}$ and $D^\ast\bar{D}^\ast$ thresholds, where the Initial Single Pion Emission mechanism is introduced in the ...
Resonant solitons from the $3\times 3$ operator
Soliton Solutions Inverse Scattering Parametric Interactions Three Wave Interactions sl(3) Soliton Solutions Resonant Solitons
2011/7/6
Resonant solitons of the $3\times 3$ operator are studied. The scattering data of this operator contains four transmission coefficients, two in each half complex $\zeta$-plane, where $\zeta$ is the sp...