查询词典 coefficient functional

However, as Fama and French (2002) note, the time-series standard errors of the coefficient estimates can be biased downward by autocorrelation in the coefficient estimates.

然而，由于和法国法玛（2002）注意到，该系数估计时间序列的标准差可以向下偏估计的自相关系数。

This section simply introduces the basic principles of the conventional analysis of time series (mean, variance, standard deviation; covariance and correlation coefficient; autocovariance and autocorrelation coefficient), frequency spectrum analysis and wavelet analysis.

本文简单地介绍了传统时序分析（包括平均值、方差和标准差；协方差和相关因子；自协方差和自相关因子）、频谱分析和小波分析的基本原理。

A theoretical comparison is conducted to demonstrate that when autocorrelation coefficient and moving average coefficient are positive, the safety stock with a variable reorder level is less than that determined by means of moments of demand, but more than that with traditional reorder point approach.

理论分析得出，在需求呈正相关且随机误差项平滑系数为正数时，变化订货点水平确定模型得出的安全库存低于根据时点需求得出的安全库存，而高于传统模型得出的安全库存。

Spatial variability ; autocorrelation coefficient ; semivariance function ; cross correlation coefficient ; soil salinity and sodicity

空间变异性；自相关系数；半方差函数；互相关系数；土壤盐碱度

Four characteristic parameters, mean value, variation coefficient, skewnesscoefficient and first-order autocorrelation coefficient, of these precipitation series areestimated with classical statistics.

利用经典统计学理论计算了研究区域上样本站和检验站的年降水序列的特征参数——均值、变差系数、偏态系数和一阶自相关系数。

The average standard deviation and variation coefficient of crop coefficient estimated with NWSE model were 0.13 and 0.12 respectively.

NWSE模型计算的作物系数的平均标准差为0.13，平均变差系数为0.12。

Based on the analysis of reducing coefficient of wheel weight, the balanced centrifugal force does not affect reducing coefficient of wheel weight.

在分析轮重减载性质的基础上，提出被平衡的离心力基本不影响轮重减载率的大小。

Based on the analysis on digression coefficient, the balanced centrifugal force does not influence the magnitude of digression coefficient.

而欠超高产生未被平衡的离心力，应作为脱轨水平力的一部分与列车振动的侧向压力一起，产生不利的影响。

Be the construction aweather with the width of the beam wind along high press consecution regulation the variety, table 7 inside of pulsation influence coefficient again multiply by with the correction coefficient ob with ov.

2，当结构迎风面和侧风面的宽度沿高度按连续规律变化时，表7中的脉动影响系数再乘以修正系数ob和ov.0b应为构筑迎风面在z高度处的宽度bz与底部宽度bo的比值，ov可按表7确定。

Correlation of drillability anisotropy index of the roller cone bit and PDC bit, the difference between drillability of the roller cone bit in perpendicular and horizontal directions of the bedding plane with the P-wave velocity anisotropy coefficient are studied respectively by means of mathematical statistics. A mathematical model is established for predicting drillability anisotropy index by using P-wave velocity anisotropy coefficient.

用数理统计方法研究分析了牙轮钻头岩石可钻性各向异性指数、牙轮钻头垂直于和平行于地层层面方向岩石可钻性差值和PDC钻头岩石可钻性各向异性指数与纵波波速各向异性系数的相关关系，建立了用纵波波速各向异性系数评价地层可钻性各向异性的模型。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。