查询词典 covariance functional

Objective To study the effect of covariate imbalance on analysis of covariance.

目的 探讨协变量的不均衡对协方差分析的影响。

Significance and application of covariance functions are discussed.

对协方差函数的意义和应用做了讨论。

The point in the thesis is to set up the covariance index number model.

本文的重点是构建统计指数模型。

The theoretical foundation of the covariance is pertinence of system theory.

协变性的理论基础是系统原理中的相关性。

However, these methods are estimated according to sample variance and covariance estimators of returns.

然而，这些方法都是根据样本的变异数或报酬的共变异数估算的估计值。

Further using Covariance Structure Model,we make an empirical analysis of these factors.

并采用协方差结构模型分析方法，对这些因素进行了实证研究。

The Covariance Structure Model is used to make an empirical analysis of these factors.

并采用协方差结构模型分析方法，对这些因素进行了实证研究。

Finally,the validity of the proposed model is verified by the covariance method.

采用谱估计中的协方差法进行模型校验，经验证表明提出的方法是行之有效的。

By comparing the performances of these methods, it is found that the covariance cumulant approach is most effective.

结果表明，三种算法可以进行有效的波束形成，基于累积量和特征空间的方法具有最高的输出信噪比。

To some extent,expectations and covariance s can.

均值和协方差一定程度上可以描述这些随机变量的概率分布特性。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。