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The results show that the stock market returns and volatilities in China have long memory and persistence although they are not as strong as that of American stock market; The memory of Shanghai stock is stronger than that of Shenzhen stock; The autocorrelation function of a fractional integration model can fit the sample autocorrelation much well.

结果表明:中国股市收益率与波动性具有长记忆性,尽管收益率的长记忆性不如美国股市强;上海股市的记忆性明显强于深圳股市;分数可积模型较指数衰减自相关函数能更好地拟合样本的自相关系数

This project also obtained several limit theorems for some important dependent random variables and stochastic processes, such as the Strassen law of the iterated logarithm for negatively dependent random variables, strong limit theorems for mixing random vectors in Banach spaces, sample path properties for two-parameter fractional Wiener processes, and so on.

随机环境中的随机变量与随机过程的研究在国内外相当活跃,本项目主要研究它们的极限性质,着重研究了随机风景中随机变量与随机过程的极限性质,主要取得了以下几个结果:首先对简单对称的Kesten-Spitzer随机游动在低阶矩的条件下给出了强逼近,大大减弱了前人要求任意阶矩的条件,然后对独立风景中的一般随机变量给出了强逼近的一般性结果,由此导出在风景和随机变量都只具有低阶矩的条件下的独立但不同分布、混合相依变量的强逼近,在只有弱高于二阶矩的条件下得到了重相对数律和弱收敛;给出了连续时间参数的Brown风景中Brown运动和稳定风景中稳定过程的滞后增量和连续模等精确样本轨道性质;同时给出了一些重要的相依随机变量和过程的若干极限定理,如负相关随机变量的Strassen重对数律、抽象空间上混合相依变量的一些强极限定理成立的充分必要条件、两参数分数Wiener过程的样本轨道性质等。

If a man between the ages of 18 and 30 scored in the top fifth percentile, an Imperial recruiting agent would contact him and presumably arrange DNA sampling for cloning.

如果18到30岁之间的军校男生分数达到前5%,一名负责征兵的帝国官员会找上门来,提取DNA样本准备克隆。

"Vital exhaustion, defined as feelings of depression and fatigue, has previously been investigated mainly as a risk factor for cardiovascular disease," write Corinna Bergelt, PhD, from the Danish Cancer Society in Copenhagen, Denmark, and colleagues.

此研究样本包含8,527人,年龄21至94岁,他们已经被测试过,他们是1991-1994年间哥本哈根心脏研究计划中的一部份,研究者根据生命衰竭分数将病患分成四组,他们根据丹麦癌症登记处的资料决定癌症症状,使用Cox线性危害模型做回归分析,用数个交络变数做修正。

Study-I recruited the students of the National Taiwan University as samples who were assigned to depressive group (n = 23), dysphoric group (n = 25), and normal control group (n = 32) based on the diagnosis of MINI and BDI-II scores. The demographic and other relevant variables such as age, education level, VIQ, PIQ, and FSIQ were controlled.

本研究分为两个子研究,研究一以忧郁病谱中的大学生为样本来源,依MINI确认诊断之有无,搭配BDI-II分数划分为忧郁组(n = 23)、情绪低落组(n = 25)、及控制组(n = 32),并控制其年龄、教育程度、语文智商、作业智商、及全量表智商等人口学变项与干扰变项。

The major findings are:⑴During the intelligence test for the three groups of students, for half of the students or most of the students their scores on the all-including scale, the language scale and the performance scale all increased to various degrees;⑵From the analysis of the relationship between intelligence and reaction time, it is found that the result of this study confirms the existing views that there is a negative correlation between intelligence and reaction time, and the negative correlation is more evident when it is choice reaction time;⑶Different motor skills have different influences upon children with lower intelligence. Though the difference is not large, the average increasing percentages in the sample T tests for the three groups before and after the experiment show that the effect of open motor skill is the best, that of the synthetic motor skill or the open-closed is the better, and that there isn't a marked change in the closed motor skill trainees;⑷While analyzing the result of the experiment, it is found that the scores on the performance scale are higher than the scores on the language scale, especially in the open motor skill group, which tells us that the intelligence improving effect of physical training is realized to a greater extent through increasing their performance abililty.

研究结果显示:⑴相对于实验前测试结果,三个实验组学生的智力水平在实验后测试中不论是在全量表得分还是在语言量表、操作量表得分方面均得到了不同程度的提高;⑵从智力与反应时的相关分析可看出,本研究结果进一步验证了前人观点,即智力与反应时有显著的负相关,特别是与选择反应时有很强的负相关性;⑶不同运动技能对智力落后学生智力影响不同,虽然实验后各组间没有显著性差异,但经各组实验前后配对样本T检验及实验前后各项分数均值提高百分率可看出,开放式运动技能组实验效果最好,综合运动技能组次之,闭锁式运动技能组实验前后在智力测验量表得分上无显著性变化;⑷各组实验前后的操作量表分比言语量表分提高幅度更大,开放式运动技能组表现得尤其显著,这表明了体育活动对改善智力落后学生的智力水平,很大程度上是通过提高他们的操作能力来实现的。

The major index were patient APACHEII Score≧25 (within 24 hours of ICU admission), survival rate, the length of ICU stay, and whether intensivist care had been received; the care efficacy was evaluated and tested by chi-square test and independent sample t-test.

主要指标为患者的疾病严重度分数≧25分者(入院24小时内之APACHE-II Score)、存活率、住加护病房天数、是否接受专责重症专科医师照护,并以卡方检定、独立样本t检定来进行照护成效评估。

推荐网络例句

However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。