查询词典 correlation function

However, in some situations, models are hard to satisfy these assumptions at the same time. We meet a number of random errors with serial correlation and heteroscedasticity in practical problems. The rationality of these assumptions for random errors is doubtable. Therefore, it is necessary to test for correlation and heteroscedasticity in regression, which is an important step of dealing with regression problems and plays an important role in theory and practice.

但实际问题中，回归模型很难同时满足Gauss-Markov的三个假设，人们在实际问题中发现许多随机误差出现序列相关和方差不同的现象，因此对回归模型的随机误差的独立性和方差齐性的假设产生了质疑，从而展开了回归模型的相关性和异方差检验的研究，它是处理回归问题的重要步骤，在理论和应用上都有十分重要的意义。

By experiment it was found that the production of oxygen of Elodea nuttallii's telome through photosynthesis had curved correlation with the temperature and illumination, while negative linear correlation with pH.

本文研究了温度、pH值、光照三种环境因子对伊乐藻光合作用的影响，实验得出伊乐藻顶枝光合作用的产氧量与温度、光照呈曲线相关，与pH值呈线性负相关。

This result can be used to qualitatively interpret the positive correlation and anti-correlation between the near infrared excess and equivalent width of Hα emission line, as observed in some Be stars.

此结果可用来解释一些Be星中观测到的红外超和Hα等值宽度的同时增长，也可用来解释另一些Be星中观测到的红外超和Hα等值宽度的相反变化。

After analyzing the characteristic of the rigid plane motion and the shortcomings of classical digital image correlation algorithms, the phase-angle position of the rigid body in the 2D image was characterized by 1D sequence signals using the method of equiangular sampling feature extraction based on circle windows. Then the generalized correlation algorithm for estimation of time delay based on wavelet transform was used to acquire the angular displacement. Finally the ultrasonic radiation force acted on the micro-component was determined by the relation between force and motion.

在研究检测对象刚体平面运动特点和分析传统数字图像相关算法局限性的基础上，采用基于圆周窗口等分角采样的特征提取方法，将二维图像中刚体的相角位置信息表征为一维采样时序信号，并通过基于小波变换的广义相关算法来估计位移前后特征序列的时延，得到刚体的旋转角位移，从而利用力与运动量的相互关系确定出作用于微构件的超声辐射力。

There is positive correlation between bone mineral density and ratio of trabecular partition to ROI area, and negative correlation between bone marrow partition to ROI area or Euler number.

跟骨高分辨CT图像能客观反映糖尿病非胰岛素治疗患者跟骨微观形态学方面的改变。

Although this study was not able to further demonstrate the correlation between the extensive reading quantity and students' gain scores and the correlation between extensive reading amounts and reading speed, the experimental group showed significantly better performance of reading rate than the control group.

虽然本研究无法更进一步证明阅读量与学生成绩进步幅度之间的相对关系，亦无法找出阅读量与学生阅读速度之间的相关性，本研究的实验组阅读速度成长幅度的确比对照组有显著的表现。

This study, thus, aimed to examine whether an embedded extensive reading program has any significant impact on the students' reading proficiency gains, reading speed, motivation and attitude towards reading; whether there is any correlation between extensive reading quantity and reading proficiency gains; the correlation between reading quantity and reading speed; and if it is feasible to implement an extensive reading program in the Taiwanese senior high school English curriculum.

因此，本研究旨在验证在正规英语课程里嵌入一个广泛阅读活动是否对学生的阅读能力、阅读速度、以及英语阅读动机和态度有显著的影响；调查广泛阅读量与阅读能力的成长以及阅读速度的成长是否具有相关性；以及探讨广泛阅读活动在台湾高中英语课程实行的可行性。

For testing the second hypothesis, the method of correlation, partial correlation analysis, regression analysis and path analysis was used, then F test was used to compare among groups.

为论证第二个假设，本文所采用的统计方法有相关及偏相关分析、回归分析及路径分析，并在各变量分组后采用F检验方法对各组进行了比较。

As regard the correlation coefficients among ABTS assay, FRAP assay, and total phenolics contents, it can be seen that correlation coefficients in each case were significant.

在ABTS测试、FRAP测试和总酚类含量相互之间的比较时其相关系数是有意义的。

Ased on the fact, the basin flood forecasting system above the Wanan Hydropower Complen of Ganjiang water system set up and improved the rainfall-runoff correlation, the ad-vent of freshet, the up-downstream water stage correlation and the Xinanjiang Medel etc.

赣江水系万安水电枢纽以上流域洪水预报系统从防汛实际出发，建立健全了降雨径流相关、洪水演进、上下游水位相关、新安江模型等，构成了全流域自上而下的一套实时联机预报系统，用于实时洪水预报和模拟防洪调度分析等作业任务效果良好

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了