查询词典 autocorrelation

Under the assumption of a sech〓 input pulse, TOD is significant only for pulse widths less than 10 femtoseconds resulting in pulse broadening as well as distinct amplitude oscillations on the leading edge. TOD is positively correlated with its length. The calculations presented here allow for the determination of the maximum thickness of crystal that may be used in the autocorrelation system.

结果表明当脉宽接近或小于10fs时，脉冲才有明显的展宽效应，脉冲的展宽倍数与晶体的长度成递增关系，计算同时给出能基本消除三阶色散的展宽效应的倍频晶体的最大厚度，为进一步实验研究提供了依据。

Discussion topics include data analysis, probability concepts, point and interval estimation, statistical inference, hypothesis testing, simple regression model, inference in the simple regression model, general linear statistical model, dummy variables, collinearity, heteroscasticity, autocorrelation, error-related model, the Probit model, the Logit model and the Tobit model, simultaneous equations, and the time-series statistical model

讨论的主题包括实证资料的分析，机率，点估计与区间估计，统计推论，假设检定，简单回归分析，一般线性统计模型与推论，虚拟变数，共线性问题，异质变异数，自我相关， Probit模型， Logit与Tobit模型，联立方程式的估计与推论，时间数列统计模型。

By detecting the autocorrelation of the sinusoid, the moments of arrival and ending of the ...

同时，通过对该正弦信号频率估计，结合已获得的到达时刻参数，就可以实现对该线性调频分量初始频率的估计。理论分析和计算机模拟结果表明本方法切实可行。

Thats to say, the method of weighted autocorrelation function is adopted for sonant frames while the singularity detection theory of wavelet transform is adopted for transition frames of surd and sonant.

对浊音帧，采用加权自相关法进行检测；对清浊音过渡帧，则利用小波变换的突变检测原理进行检测。

Spatial weight matrix ; spatial autocorrelation ; discrete point ; urban land price ; Changzhou

空间权重矩阵；空间自相关；离散点；城市地价；常州

In this paper, it is proved that the polar signal obtained from the symbolization of an ergodic random signal is stationary and that the autocorrelation function of the polar signal is ergodic.

本文证明了各态历经的随机信号经符号化处理后，得到的极性信号是干稳的，极性相关函数是各态历经的。

A stationary time series is one whose statistical properties such as mean, variance and autocorrelation are constant over time.

一个固定式时间数列是一个统计物产譬如手段、变化和自相关是恒定的随时间。

To apply ARIMA models the time series needs to be stationary. A stationary time series is one whose statistical properties such as mean, variance and autocorrelation are constant over time. If the initial time series is not stationary it may be that some function of the time series, e.g. taking the differences between successive values, is stationary.

运用ARIMA模型时时间序列必须是固定的，一组固定的时间序列是它的统计特性诸如平均值＼差异和自相关等随着时间的推移而始终不变，如果最初的时间序列不固定这是由它的某些函数引起的，以序列值之间的差额为例，它们是固定的

This paper puts forward a univariate AR(1) model that relates stock price,stock returns and dividends to study stock returns autocorrelation function, and adoptsa variance decomposition to analyze variation between expected steek returns and unexpeetedstock returns.

提出一种联系股票价格、股票收益及股息的单变量回归模型来研究股票收益的自校正，并采用变量分解法探讨股票预期收益与非预期收益两者之间的变动关系。

A set of equally long finite sequences is said to be complementary sequences if the sum of autocorrelation functions of the sequences in that set is zero except for a zeroshift term.

补码是一种由多个等长的序列组成的、具有良好的自相关性特性的序列集。补码集中每个序列的自相关函数的和在除了零点外的其他任何点上均为零。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。