阶数

The resolution kernel and the root square deviation of the inversion solution can be obtained by analyzing the spherical harmonic coefficients.

在变换后的球面域上用球谐函数来拟合速度函数，达到降低球谐系数阶数的目的。

The key work in SSI is to gain the order of the system.

在随机子空间识别方法中，确定系统的阶数是该方法中的关键工作。

Moreover, an Adaptive RM algorithm is proposed to adjust RM estimator by steepest descent method.

该运算复杂度远低于现有的盲信道估计搜索算法，并且适用于信道阶数较大、搜索算法不能处理的情况。

This paper is carried out to analyze the buffeting of long-span steel arch bridge in operation and erection stage. The research is mainly focused on the following aspects: Based on the present AR method, the AIC rule is used for fix the rank of the AR model to improve the simulation precision. Take into account that the wind speed spectrum is vary with the height for the long-span steel arch bridge, simulate the fluctuating wind field.

主要工作有以下几个方面：通过对现有的AR法进行改进，采用最小AIC(A-Information Criterion)准则准确识别模型阶数，提高AR法的计算精度，并考虑大跨度钢拱桥风速谱随高度变化的特点，实现了对三维空间脉动风场的有效模拟。

Order selection for transient stability simulation using higher order Taylor series expansions is significant for computation efficiency.

泰勒级数法暂态稳定计算中阶数的选取对提高计算效率有重要意义。

Two kinds of generalized cyclotomic sequences of order four are introduced.

构造了两类阶数为4 的W-广义割圆序列并研究了它们的自相关性质和线性复杂度。

In GMM model, research into the order and enframe influence of the system capability.

在GMM模型中，研究了高斯混合模型的阶数和帧长度对系统性能的影响。

But the reflection factor is in a standard filter important coefficient, but uses the alternative means to be very difficult to guarantee front and the retroreflection coefficient value is smaller than 1, and is unable to obtain its correlation function precisely, especially has this kind of serious problem in linear prediction coding equisignal processing, the BURG algorithm can in then be able to determine from the very beginning its exponent number and the transmittance have then overcome a limit question.

而反射系数是格型滤波器中的一个重要系数，而采用其他方法很难保证前向与后向反射系数的值小于1，并且无法精确得到其相关函数，尤其在线性猜测编码等信号处理中存在着这种严重问题，BURG算法能在一开始便能确定其阶数和传递系数便克服了着一限制问题。

From this theorem, we prove the existence of the recurrence for the admissible q-proper hypergeometric sums, and obtain an estimate of the order J of the recurrence.

在此基础上证明admissible q-proper超几何和的迭代关系的存在性，并且得到迭代关系阶数J的一个估计。

This method allows for a more accurate processing of boundary condition on the semiconductor layer in XLPE cable of stator winding than the standard finite element, so that the interlaminated issue of boundary condition on interface can be avoided. A general algorithm is applied to deal with both the Dirichlet and the periodic boundary condition in 2D or 3D magnetic field problem.

提出了用有限元法计算磁场问题时周期性边界条件和第一类边界条件的统一处理方法，利用该方法在不改变代数方程组阶数、保持系数矩阵性质不变和带宽基本不变的条件下，使两种强加边界条件能同时处理，简化了程序编制，并与寻址方法相结合，提高了计算速度。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。