查询词典 lag covariance

This method decomposes wave-front phase to a linear combination of orthonormal basis functions, According to the covariance of weight coefficient, a random wave-front phase is realized.

协方差冲激函数产生法对连续波前相位进行冲激函数正交分解，根据正交分解系数的协方差模拟平行光通过大气后的瞬时波前相位。

Phase screen which has same statistics as turbulence-induced atmospheric phase (vonKarman and Kolmogorov spectrum) will be generated by covariance method using pulse function as an orthonormal basis function.

提出正交基为冲激函数的协方差法，在Matlab中仿真实现符合大气湍流统计分布（vonKarman谱和Kolmogorov谱）的大气相位屏。

This needs a set of human resource management information system to help the department managers to handle the daily works, such as Input output works and statement covariance...etc.

同时人力资源部也需要在现有人力资源数据基础上进行数据清理和转换，从而挖掘出对管理者决策更有价值而且综合性更强的信息。

Chapter 3: we construct a general model of covariance-adjusted duration-convexity immunization to hedge the interest rate risk in the situation that the yield curve doesnt parallel shift and then analyse the model in the case of hedging portfolios of two assets and three assets.

第三章建立一个基于协方差调整的一般久期-凸度免疫模型，用于收益率曲线非平行变动情形下对冲利率风险，并用两资产对冲组合和三资产对冲组合进行特例分析。

In this dissertation, we develop the research work of the following three aspects based on existed work.First, using the scale-invariant property of multiscale model, i.e. Markovian among scales, a method of qth-order tree-based for multiscale representation of a class of 1-D stochastic process is presented. The multiscale stochastic model is established. The representation forms of parameter matrices, such as, the state transition matrix, the disturbance matrix, the initial state and the corresponding covariance matrix are deduced in detail. The multiscale sample paths based on distinctive order tree are presented by computer simulation.

本文在已有工作的基础上，开展了以下几个方面的研究工作： 1、根据多尺度模型尺度不变性，即利用尺度间的Markov性，给出了一类1-D随机过程基于一般q阶树的多尺度表示方法，建立了相应的多尺度动态模型，详细推导了多尺度模型中的状态转移阵、扰动阵、初始状态和相应的协方差阵，并通过计算机仿真给出了不同阶树的多尺度采样路径。

We aimed to assess whether metabolic brain imaging combined with spatial covariance analysis could accurately discriminate patients with parkinsonism who had different underlying disorders.

本研究的目的是评估代谢脑显像与空间协方差分析相结合是否能准确的识别有不同潜在病变的帕金森综合征患者。

The correlation between lung function and different measure index was compared with covariance analysis and partial correlation analysis.

选取马鞍山市部分初三毕业生进行人体测量和肺功能检测，利用协方差分析和偏相关性分析计算肺功能与不同测量指标的相关关系。

Point estimation is the estimation of the mean, variance, and covariance of a random variable from sample data.

点估计是样本数据随机变化的方式，差异，协方差的估计。

In first part it pays attention to theory study. Afterwards, based on linear programming, we introduce some properties of conic optimization and its dual problem, which are a kind of especial convex programming. In second part, we apply these theories to practice, such as least-squares problems, polynomial solution and approximating covariance matrices, and other aspects .

第一部分是理论研究：在线性规划的基础上重点介绍了一种特殊的凸规划类型——锥规划及其对偶锥规划，并介绍了锥规划及其对偶锥规划的发展及其性质。

Based on the rules and the facts that covariance matrix is positive definite symmetric matrix, new split-and-merge methods are proposed and the improvements for the SMEM algorithm are designed.

最后在Ueda等人的利用分离合并过程来改善EM算法的思想启发下，具体从用于高斯混合体模型的EM算法出发，得到了一类新的分离合并EM算法，同Ueda等的比较，后者的分离合并方法是一种启发性的过程，前者则是在一定理论指导下的推出的。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。