查询词典 empirical

The semi-empirical formula about friction factor between rolling element and raceway was introduced into the calculation process.

在根据滚动体所受内外圈摩擦力与陀螺力矩相平衡的关系得出的内外沟道控制参数表达式中，引入滚动体与沟道之间摩擦因数的半经验公式。

In the empirical study, we find that conventional tests over reject the null when the event forecasts and event realization of all countries have high serial correlation, which means the event forecasts have the timing ability. According to the evidence of sample correlation coefficient, however, it seems that the event forecasts have no timing ability by using these the HAC robust tests.

尔后，利用实际的资料，考虑六个国家股票市场每月之报酬率发现，所有国家在事件预测值与事件实现值存在高度的序列相关下，传统检定方法出现了过度拒绝虚无假设的结果，认为事件预测值具有预测能力；而考虑序列相关问题的检定方法则认为事件预测值不具有预测能力。

Hierarchical linear modeling is the most frequently used technique for analyzing multilevel data. In this paper, the twelve key issues in multilevel research and/or using HLM software were reviewed, and provided their exact meanings and feasible solutions. The 12 key issues included intraclass correlation coefficient, sample sizes, formation of organizational constructs, centering problems, fixed effect and random effect, estimation methods, goodness of fit index, explained variation, multicollinearity, robust standard error, level one variance equation, and empirical Bayes estimates.

本文针对阶层线性模式在多层次研究上有关於技术、测量与方法论所遭遇的问题，进行文献整理并讨论其实务意涵，并依据使用时机、抽样议题、资料汇总、分析方法、与模式评估与估算等五方面整理出十二项重要议题与解决之道，包括：组内相关系数的意义与判断准则、多层次研究各层的样本数问题、变数聚合成组织层次问题、中心化的意义、固定效果与随机效果的设定、估计法的选择、适配度的比较、解释变异量的计算、多元共线性的分析、强韧性标准误、第一层误差项变异数与实证贝氏估计值的运用。

In the empirical test, data overlapping induced by the difference of the sample interval and forecast interval is considered.

在实证检验中，考虑了抽样间隔和预测间隔不一致而导致的数据重合问题。

The conclusions of the empirical tests on EMH of China's stock market may be different due to the testmethods,sample interval and data processing methods applied.

对我国股票市场有效性的实证检验，不同的检验方法、样本区间和数据处理方法，都可能会影响得出不同的检验结论。

So, our work consists of two major parts: First, we using qualitative and quantitative analysis to prove the effects of monetary policy in non-crisis period is effective and its effectiveness is significant. Second, we analysis the effects of monetary policy in crisis period, especially time slice by means of recurrence method, and do empirical study of each interval sample separately to observe the change of monetary effectiveness.

为此，本文所做的工作主要有以下两点：第一，通过定性分析和实证方法证明在美国经济正常时期，即非危机时期，美国的货币政策是有效的且有效性显著；第二，对次贷危机以来美国的货币政策效应进行分析，以时间递推的方法将危机时期进行分段，并分别进行实证研究观察货币政策有效性的变化。

An Empirical Study of the major assumptions, including sample selection,variable selection and return to the results of the Review and so on.

主要包括实证研究假设、样本选取。变量选择和回归结果及其述评等内容。

The empirical analysis result indicated that the correspondence analysis could reveal the internal relations between sample sources and variable,and was an analytical method with superiority.

实证分析结果表明，对应分析能够揭示出样品来源与变量之间的内在联系，是一种有优势的分析方法。

Empirical test shows that classification tree outperforms the discrimnant analysis method. At last, the paper analyses the effect to accuracy of primary sample set and variable structure.

实证分析表明该方法比线性判别分析方法的准确率高；针对进一步提高分类准确率，结论部分对初始样本和变量结构对分类准确性的影响进行了分析

Further, considered the considerable uncertainty of current sample variance, a reliability estimation method based on t-distribution theory and empirical logarithmic standard deviation is proposed.

进一步考虑到工程实际中当次可靠性试验的样本方差具有较大不确定性的因素，提出了基于对数标准差经验值的t分布可靠性评估方法。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。