函数矩阵

According to the perturbation theory, a distribution law of matrix element in secular equation is discovered in degenerate state and wave function property of the hydrogen atom.

根据简并态微扰理论和氢原子波函数的性质，得到久期方程中微扰矩阵元的分布规律。

The methods include: determining all elements' sensitivities to the sum of error functions, optimization sequence and direction of objective functions, eigenvalues and eigenvectors of Hessian matrix and the approach of stabilizing algorithm.

提出了计算功率GaAs MESFET小信号模型参数的一些改进方法，包括计算Hesse矩阵本征值和本征向量，确定各元件对总误差的敏感度、目标函数的优化顺序和优化方向，以及稳定的计算方法，计算结果与器件的测量值吻合。

In this paper,from the view point of engineering realization,the problem of decentralized E-Stabilization of complex giant singular nonlinear systems is cousidered by employing the theory of variable structure contol, the property of diagonal dominant matrices and Lyapunov function.

应用变结构控制理论和对角占优矩阵的性质，结合Lyapunov函数方法，从工程实现的角度考虑并研究了一类复杂巨型广义非线性系统的分散E—镇定问题，在一定条件下。

The energy of every IMF and the singular value of the IMF matrix were chosen as features. The Shannon and Renyi entropy of the energy and singular value distribution were also extracted.

计算各固有模态函数的能量和矩阵的奇异值，采用Shannon熵和Renyi熵度量能量和奇异值分布，构成原始特征子集。

Keywords: MRSI; equal-phase line algorithm;sampling density compensation function; singular value decomposition;sensitivity encoding matrix

中文关键词：磁共振波谱成像；等相位线算法；采样密度补偿函数；奇异值分解；灵敏度编码矩阵

For the singular spectrum analysis of time series, a method of constructing covariance matrix by using forth order cumulant is proposed. The method could restrain the Gaossian noise and symmetrical distributed noise mixed with chaotic signals.

对于时间序列的高阶奇异谱分析，提出了一种利用四阶累积量函数构造协方差矩阵的方法，该方法从理论上能有效地抑制叠加在混沌信号中的高斯噪声和对称分布噪声对重构结果的影响。

By means of singular model transformation technique, special Lyapunov-Krasovskii functional approach, similar Leibniz-Newton formula and linear matrix inequality concept, some new stability conditions are derived for above systems.

应用奇异模型转换技巧、特殊型Lyapunov-Krasovskii泛函数方法、相似型Leibniz-Newton公式、线性矩阵不等式观念针对上述类神经网路系统，提出新稳定测试准则。

Sparse matrix constructor, to share with you, save a number of their own time.

详细说明：稀疏矩阵构造函数，与大家分享，自己保存了多场时间了。

Applying the boundary condition in the interface between the uniaxial anisotropic medium and free space, the surface of the conducting sphere, the expansion coefficients of electromagnetic fields in terms of spherical vector wave function in uniaxial anisotropic medium are obtained, and then the expansion coefficients of scattering fields and radar cross sections can be obtained.

通过矩阵方程的求解和球B(来源：e3ABC论文网www.abclunwen.com)essel函数的大宗量渐进表达式，我们给出了各向异性单轴介质球结构对平面波电磁散射的数值计算结果，并和其他的数值计算结果进行了比较，其结果正如我们所预料的一样，达到了预期的结果。

A method of double third -power spline is used to add more nodes to the surface of a spiral bevel gear .

提出了一种用位移矩阵法精确求解实现四个或五个位置的刚体导引机构的综合，实现了两边架杆四个或五个对应位置的函数机构的综合以及其它一类连杆机构综合的方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。