查询词典 null method

In order to detect the nonlinear determinism, the method of surrogate is employed. The null hypothesis that a real system response is from a stationary Gaussian linear process distorted by an invertible, static, nonlinear measurement function is made and tested.

采用替代数据法对实际房间声学系统的非线性确定性进行检测，假设实际系统响应是由平稳高斯随机过程经可逆、静态的非线性函数变换而得到，然后对该假设进行检验。

A method based on the orthogonal property between signal subspace and noise subspace is proposed for robust adaptive beamforming. The robustness would be achieved by projecting the signal steering vector and the null constrain steering vector on signal subspace followed by LCMVB.

针对此情况，基于信号子空间与噪声子空间的彼此正交特性，对存在误差的信号导向矢量和干扰导向矢量，同时向信号于空间投影，然后对投影后的导向约束采用LCMV准则进行自适应波束形成。

This paper points out the problems about using statistical hypothesis test, analyses the relation between two types of errors and proposes the Bayes method to the persons when they have no enough knowledge about the null hypothesis.

本文首先指出实际工作中使用统计假设检验方法常出现的问题，具体介绍了假设检验方法，并分析两种错误之间的关系。

A new way to get the null frequency has been proposed and implemented by programming, which is the key step in the whole process of signal processing. And this method can also be used to a wider range of applications.

提出了一种获取零频值的新方法，并进行编程实现，实现了干扰源定位的信号分析处理的关键步骤，该方法可推广到较广的应用范围。

BRORSEN Michael%LARSEN Jesper Source generation of nonlinear gravity waves with the boundary integral equation method Coastal Engineering , 1987,null

高学平%曾广冬%张亚不规则波浪数值水槽的造波和阻尼消波海洋学报， 2002，2

Compensation null test is a very important method in testing aspheric surface with high accuracy.

补偿法是高精度光学非球面检测的一种主要方法，本文针对补偿法检测非球面时必需解决的几个关键技术进行了研究，为高精度补偿器的设计与研制成功提供了有力的技术支持。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。