参数假设

Therefore,we use Hansen's(1982) generalized method of moments to obtain heteroskedasticity-consistent standard errors of the variances and to conduct hypothesis tests on the parameters.

因此，我们使用哈森的(1982)广义矩法获得方差的异一致的标准差并进行对参数的假设检验。

Taken Qinshui Basin as an example a predictive model of gas content is established by multiple stepwise regression analysis, using Langmuir volume and gas saturation as its parameters. The result of multiple correlation coefficient testing, F-testing and t-testing indicates that the model meets the hypothesis testing of linearity and its matching effect is preferable.

以沁水盆地为例，运用多元逐步回归分析方法，建立了以Langmuir体积和含气饱和度为参数的含气量预测模型；复相关系数、F检验、t检验结果表明，该模型满足线性与方差齐性的假设，拟合效果较好。

For the application of Mathematica in the differential geometry,this paper introduces how to processe the curve curvature and the torsion questions,the graphic expression of the curvature and the torsions,and draw curves by the curvature and the torsions. Curvature ; torsion ; solution curve ; osculating plane ; natural parameter ; natural equation

利用Mathematica，只要输入有关系统命令就可以得到期望的结果。1曲率和挠率及其图形意义假设R3上的曲线一般参数表示为r=r它的曲率和挠率计算公式是：κ=‖r′×r"‖‖r′‖3τ=‖r′×r‖我们知道，空间曲线r=r在一点(s=s0)邻近的近似方程为ξ=sη=120κs2ζ=160κ0τs3通过近似方程可以确定曲线在其基本三棱形的三个平面(即密切平面，法平面，从切平面)上的投

Was bigger than that of the nonparametric method and the original sample. The results were in consitent with our anticipation.

2的标准误远远大于非参数法和原始样本，与我们的理论假设是一致的。

This nonparametric test was preferred, because no assumptions about the underlying distributions are necessary.

这是首选的非参数检验，因为没有任何假设的基本分布是必要的。

For the characteristic of ring permanent magnet torque motor used in direct drive numerical control round table suffering from the effect of load disturbances and parameter variations, the H∞ controller design methodology without the orthogonality assumptions is combined with m-K iteration in m synthesis to design a m-H∞ speed controller in this paper.

针对直接驱动数控转台用环形永磁力矩电机易受负载扰动及参数变化影响的特点，将去除正交性假设的H∞控制器设计方法与m综合中的m-K迭代法相结合，设计了一个m-H∞速度控制器。

In order to avoid requiring a particular parameter passing mechanism, the FORTRAN Standard had exactly the right set of rules to allow a vectorizing compiler to assume that x , y , and result are all distinct, non-overlapping arrays.

为了避免使用某种特定的参数传递机制，FORTRAN标准已经精确地制定了恰当的规则，使向量编译器假设 x 、 y 和 result 都是不同的，非重叠的数组。

There is somehow an assumption that you build one parametric model, and that's it.

可能有一种假设认为，一旦你的参数化模型建完，就万事大吉了。

Makes what-if , parametrics , and sensitivity studies trivially easy

使得假设比较，参数设置和敏感性分析成为易事

Based on the assumption, the proposed method solves the linear channel parameters of each path and creates a channel matrix which can be used for ICI cancellation.

基於这个假设，我们解出线性的通道参数进而重建通道矩阵，目的去消除载波间的互相干扰。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。