查询词典 method of undeterminated coefficients

In the water quality model,the attenuation coefficients of colligation are determined to be K...

北冲污水处理厂排放的"尾水"将是水污染治理的重点，也是改善桃花江水环境质量的关键。

Then,a new fast algorithm of the minimal norm least squares solution for linear system whose coefficients is an m×n symmetric Loewner matrix with full column rank is given by forming a special block matrix and researching the triangular factorization of its inverse.

对于工程计算中常常遇到的一类线性方程组的求解，通过构造特殊分块矩阵并研究其逆矩阵的三角分解，给出了求秩为n的m×n阶对称Loewner矩阵为系数阵的线性方程组，及极小范数最小二乘解的快速算法，该算法的计算复杂度为O+O(n2)，而一般方法的计算复杂度为O(mn2)+O(n3)。

Coefficients of h-polynomial of fully commutative elements of group H_4 type are nonnegative.

H_4中所有满交换元素的h多项式系数非负。

Besides, in the new spectral dynamical framework the calculation amount firstly is decreased to half by properly using the complex conjugate relation of spectral coefficients and the symmetric and anti-symmetric character of spherical function.

另外，新方案中的纬向谱系数计算式，合理利用谱系数的复共轭性质及球函数关于赤道对称或反对称特性，使计算量减半。

The universal and not computable randomness test function defined by Kolmogorov is approximated using the Lagrangian coefficients of common support vector machine in the light of their physical meanings.

在一些高风险和重要的应用场合，如个人身份认证、医疗信号诊断以及金融分析决策等，置信判断显得更为重要和实用。

Hence, a necessary and sufficient condition for the positivity of polynomials of arbitrary degree is presented in this paper. A practical algorithm to express this condition in terms of the coefficients of the polynomials is also given.

由此提出了任意阶多项式为正的一个充要条件，也提出了一个实用的算法，从而可以只用此多项式的系数来表示得到的充要条件。

The testing results of either the augmented Solow model or the endogenous growth model which considered different economic opening degrees both support the conditional convergence hypothesis in most sample sets, while the estimated convergence coefficients of the later are significantly lower than those of the former.

大部分样本中，扩大的Solow模型或考虑不同经济开放程度因素下的内生成长模型，支持条件收敛假说，而后者设算出的收敛系数明显较为低。

In this thesis,using histogram technique,aqualitative analysis of the marginal and conditional distribution is implemented.Then weconstructed a hidden markov tree model for the coefficients,and used this model for imagedenoising.

本文使用直方图方法，定性分析了分解系数的联合分布及条件分布，在此基础上利用方向性滤波器组的多尺度结构，为其系数建立了隐马尔可夫树模型。

Then it's known that the main energy segment is among 0~10Hz.Fourth, grounded on the analysis to impact signals of debris flow, the paper found the congruous fluctuating pressure expression by constantly computing and data fitting. The correlation coefficients of A, B, C sets are 82.81%, 86.12%, 96.16% separately.

第四、基于泥石流冲击信号的各种分析，通过对试验数据的多次计算和数据拟合，得到了泥石流冲击力计算公式，且理论值与三组试验结果的相关系数分别达到82.81%、86.12%、96.16%，表明冲击力计算中考虑固相比影响的必要性。

It takesthe weighted average of the L2 norm of the difference of the observation and thesolution of the system and the L2 norm of the difference of conormal derivativeat the different sides of the interface for every subdomain as cost functional andthe smooth coefficients of the subproblem and the value of solution of the originalproblem at interface as identification parameters;Using the property of continu-ous functional defined on compact set,the existence of the optimal solution of theidentification problem is proved;The necessary conditions of optimality charac-terized by the system equation,the adjoit equation and the variational inequalitysimultaneously are given by introducing the conception ofdifferential andadjoit variable;An algorithm is devised and its flow graph is given.

其次，针对分片光滑动力系统的特征，结合正演过程的区域分解算法，建立了分片光滑系统的分解区域参数辨识模型，该模型以子区域上解的实测值与计算值之差的L2范数和界面两侧的通量差的L2范数的加权平均作目标泛函，各子问题的光滑系数及界面上真解的值为待辨识参量；利用紧致集上连续泛函的性质，证明了子区域上参数辨识问题最优辨识参量的存在性；引入微分的概念，借助伴随变量，给出了由系统方程，伴随方程和变分不等式共同表征的最优性必要条件；根据此必要条件设计了算法，给出了算法的程序框图。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。