假设检验

This paper examines the dynamic relations between return and volatility series under the assumption of closed form GARCH model.

本研究检验在封闭解GARCH选择权模型中的假设下，报酬与变异数序列的关系。

Cold-blooded animals were used to test this hypothesis because their body temperature can be controlled in the laboratory.

冷血动物被用来检验这一假设，因为它们的体温能在实验室里加以控制。

This paper uses SPSS software to research the problem and discover some results: The relation between board size and EPS is remarkable but actually U conic section relations.

本文通过SPSS软件进行描述性统计，并利用所得数据和设计的模型，对董事会特征与公司绩效进行相关性分析，对提出的假设进行检验。

Firstly, the difference of per capita GDP tends to convergence between the Western region and the Eastern region.

文章摘要：本文假设我国西部与东部地区的能源消费强度差异是西部与东部地区人均GDP差异的函数，然后同其他回归变量一起检验这两个变量之间的关系，并通过使用面板数据计量经济学模型进行实证估计。

A model of development of agro-industry in Jiang-han plain was proposed, factors affecting the development of agro-industry in Jiang-han plain were decided using delphin and analytic hierarchy process, and systematic dynamics flowing chart and equation of agro-industry in Jiang-han plain were established utilizing systematic dynamics method.

对江汉平原农产品加工业发展的模型提出了合理的假设，运用德尔斐法和层次分析法确定了影响江汉平原农产品加工业发展的主要因素，用系统动力学方法建立了江汉平原农产品生产和农产品加工业的系统动力学流图、模型，分别对江汉平原农产品资源和农产品加工业发展进行了预测和检验，为制订江汉平原农产品加王业发展战略奠定了基础。

Methods differential scanning calorimetry was used to detect the denaturation of dermal collagen and assess its thermal stability.

本研究的目的是检验关于胶原蛋白是皮肤黏弹性主要决定因素的假设，重点考察皮肤组织在动态载荷下的的热力学性能。

Their research focused on to introduce the theory of foreign and analyze descriptively the practice of domestic enterprises, some scholars took the empirical

所以，本文选取我国深交所上市的109家制造业企业2004-2006年的相关数据进行系统分析，检验了多元化程度与其经营业绩关系的理论假设，发现中国制造业企业多元化程度与经营业绩存在负相关关系，并对此进行了理论和经验解释，以期为中国企业的多元化战略实践提供理论支持。

Lower-level fraud, however, is much harder to detect: the data point invented or erased to make a graph look better, or to make a result that was not quite statistically significant into that scientific desideratum, the "minimum publishable unit"; the results "mined" retrospectively for interesting correlations, rather than used to test pre-existing hypotheses; the photograph that has been "enhanced" to bring out what the researcher regards as the salient features.

不过，更难被发现的是低级造假：生造或抹掉一个数据点来美化图表；或者让原本统计学意义并不显著的结果摇身一变，竟成了科学上需要的东西，即"最小出版单位"（也就是说文章所提供的数据量刚好够上发表条件，说的其实就是宁要数量，不要质量）；把既往研究的结果"开采出来"，是为了寻找有意义的关联，而不是用来检验已有的假设；对图片进行"深加工"以表现出研究人员心目中的显著特征。

It is shown that The asymptotic null distribution of the modified likelihood ratio test proposed is derived and found to be relatively simple and easily applied.

最新的文献表明这个提出的修正似然比检验统计量在零假设下的渐近分布是比较简单，并且是容易应用的。

Secondly, we choose the proportion of shares held by institutions as dependent variable, and we use log of the total asset, volatility, beta, Jensen Index, debt-to-asset ratio, dividend yield, turnover ratio, years listed in exchange and HS300 Index dummy as explanatory variables. Then we set up a multiple regression model. Finally, we use the cross-sectional data from the end of 2006 to the end of 2007Q3 to test the relationship between the explanatory variables and the proportion held by institutions.

具体方法如下：首先，在已有研究成果的基础上，对我国机构投资者的审慎性持股偏好提出了两个假设；其次，以机构持股占个股流通盘的比例为因变量，以公司的总资产对数值、波动率、贝塔值、Jensen指标、资产负债率、股息率、年度换手率、上市年限为解释变量，并在引入沪深300虚拟变量后，建立了多元线性回归模型；最后，采用我国证券市场迎来历史性大牛市、机构投资者发展最为迅猛的2006年末-2007年3季末的四个横截面数据，对各解释变量与机构持股比例之间的关系进行了实证检验。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。