系数矩阵

It is discussed to recondition the coefficient matrix and to treat the domain with several media.Then external wavelets are used to deal with mixed boundary conditions, which simplifies the disposal of boundary conditions and improves the accuracy of approximate solutions.

讨论了系数矩阵的预处理技术和多介质问题的处理方法；在混合边界条件的处理中使用了外小波，既简化了边界条件的处理，又提高了近似解的精度。

By studying the spectrum properties of coefficient matrix and the regular parameters at the iterative procedure of the first class regular method , we assign a uniform parameter for the inner iteration . Simulation results show that this method for choosing regular parameter is correct and the outer iterate convergence for high contrast object.

这两种方法的正则化效果取决于迭代的次数，我们通过对静态正则化方法中逆散射方程系数矩阵的谱特性、正则化参数等进行分析，对这类迭代正则化方法选取了统一的正则化参数，使得外部迭代方法收敛。

Limiting the alternatives of model by residual variance, together with parameters estimation, the correlation of the estimates matrix, the autocorrelation check of the residuals and the fitting test, can help to search for suitable model quickly and accurately.

通过残差方差定阶法缩小模型选择范围，再结合模型的参数估计、相关系数矩阵、白噪声检验和拟合优度检验最后确定模型的思路，有利于快速准确找到合适的模型。

Methods: Using the time series of cucumber downy mildew disease, we established an autoregressive integrated moving average model, ARIMA(2,2,0) based on model identification, comparison of residual variance, estimation and verification of parameter, observation of the correlation of the estimates matrix, autocorrelation check of the residuals, analysis of the fitting of model and so on.

采用黄瓜霜霉病病情指数时间序列进行研究，通过模型识别、残差方差比较、参数估计及其检验、观察参数之间相关系数矩阵、白噪声检验、模型的拟合度分析等过程。

By means of Barty's transformation this method can calculate the matrix of self and mutual inductance quickly and accurately. The coil thickness and resistances were considered also, which makes the results more convincing.

其中借助Barty变换可以快速准确地计算自感、互感系数矩阵，并且考虑包封厚度和电阻的影响，使结果更加真实。

By means of Bartys transformation this method can calculate the matrix of self and mutual inductance quickly and accurately. The coil thickness and resistances were considered also, which makes the results more convincing.

其中借助Barty变换可以快速准确地计算自感、互感系数矩阵，并且考虑包封厚度和电阻的影响，使结果更加真实。

The core of optimized DFD strategy is coefficient matrix which is calculated by complex- shape method in optimization theory.

使用约束优化方法中的复合形法计算得到系数矩阵，作为最优驱动力分配控制策略的核心。

The Proximity Matrix indicates Genetic Proximity Values between the wild blueberry and the garden blueberryⅠ,the garden blueberryⅡrespectively is 0.764 and 0.809,the dendrogram indicates sibship between the wild blueberry and the garden blueberryⅡ is near.

结果 采用40个随机引物共检测72个位点，其中多态位点27个，占37.5%；相似系数矩阵表明野生越桔和栽培越桔Ⅰ、栽培越桔Ⅱ的遗传距离分别为0.764和0.809；聚类图表明野生越桔和栽培越桔Ⅱ亲缘关系较近。

The solution for the non-stationary system is obtained through the stationary disturbed system. The gradients of the system performances to all design variables are derived and they can be used to obtain optimal solution of the systems. More generally, if the performance of the system is a function of the solution of a set of generalized Lyapunov equation, then the gradients of the performance function to the coefficient matrices of the equation can be found in closed form.

文中显示，非静态干扰系统的解可由静态干扰系统求得，而此干扰系统之最佳解，则经由本文所推导的对所有设计变数之系统性能函数梯度获得；一般而言，如果系统之性能函数是一组通式化 Lyapunov 方程式解的函数，则此方程式的系数矩阵之性能函数梯度，可用封闭解表示之。

First, a switching function is designed to guarantee that the movement of the system is asymptotically stable in the switching manifold. And the equation of the switching surface is given based on pole assignment theorem; Then a discrete robust adaptive quasi-sliding-mode tracking controller is presented by constructing the two adaptive gains, and the globally asymptotically stability of the system is proved based on the Lyapunov-Razumikhin stability theorem.

首先，利用广义系统的概念给出了系数矩阵为能控标准型的滑模面方程，并利用极点配置定理给出了能使系统稳定的滑模面；其次，构造了含有自适应律的离散趋近律，设计了能够使系统达到同步的变结构控制器，并利用Lyapunov稳定性定理，证明了系统的趋近运动的稳定性。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新