查询词典 mean difference

First, we discuss several theories of risk measures respectively such as theories ofcoherent measures of risk, spectral measures of risk and distortion measures of risk.Within the framework of these theories, we discuss and compare standard deviation,mean absolute deviation, lower partial moment, Ginis difference, VaR, CVaR and soon. We conclude that CVaR is superior to other measures with respect to theoreticalproperties.

首先，本文分别讨论了一致风险测度理论、谱风险测度理论、失真风险测度理论和随机占优一致风险测度理论等风险度量评价理论，在这些理论框架内讨论和比较了标准差、平均绝对离差、下偏位矩、基尼均差、VaR以及CVaR等风险度量。

And an advance booking can mean the difference between continuing to a new city and waiting several days for another flight .

和预约可以指之间的差额继续一个新的城市，并等待数天的另一航班。

The main results are as follows:The difference of albedo over the rice paddy and the dry land is not large with mean value 0.16-0.17 during observed period.

本文结果为进一步改进不同下垫面的陆面过程参数化提供了重要的认识和依据。

From the results of the mean values of four times monitoring, almost no statistically significant difference of ion concentrations were found among different thinning treatments.

由四次监测平均值的结果，我们发现离子浓度在疏伐处理间几乎都没有统计上的显著差异存在。

Here you can see the difference between the stock alternator and the Mean Green alternator.

你可以看到原有的发电机和MG发电机的区别。

The difference between the degrees of anteversion angle at the two sides was considered the rotational deformity of the femur shaft after the nailing.RESULTS:① The real AV angle and NH angle was nearly the same (ranged 0°-5°, mean 2°) displayed by the image intersifier.

结果：①股骨标本NH角与AV角数值测量结果：C形臂X射线机测量的NH角与裸骨测量所得的真实前倾角高度一致（0°~5°，平均2°）。

Male patient was prevalent in aphasic groups, but mean age of both gender groups was no difference. The possible explanations may be adduced for our findings; one is related to the cerebrovascular changes of aging- The decrease of cerebral circulation is prominant and disseminated in increasing age. There may be changes in the cerebral blood flow associated with aging, predisposing different brain areas to stroke. The second is possible that changes in cognition, deterioration of memroy and comprehension disturbance may predispose the perception dysfunction of language or advanced language dysfunction like global aphasia in aging group.

在各类失语症中，Broca矢语症的平均年龄为54岁，明显的比全失性失语症的平均年龄64.6岁和经皮质层感觉性失语症的平均年龄61岁都小，显示Broca失语症较易发生於年龄较轻者，而年龄较大者发生全失性失语症和经皮层感觉性失语症的机会较多，至於男女两组失语症病人在平均年龄上并无明显差异，但失语症的发生率男性比女性多，且性别上的差异也与失语症的型式有明显相关。

In order to achieve the aim of this study, a survey was conducted via a self-designed questionnaire of 403 novice teachers who had no more than three years of teaching experience in 28 junior high schools in Hsinchu County. Adopting SPSS to analyze the data thus collected, this study performed such statistical analyses as arithmetic mean, standard difference, t-test, One-Way Analysis of Variance, Pearson's correlation etc to verify hypotheses.

为达研究目的，本研究采用问卷调查法，研究对象为新竹县境内二十入所公立国民中学，任教年资在三年以下之新手教师，共403名，并使用研究者自编之「国中新手教师工作经验感受问卷调查表」为调查工具，将所得资料运用社会科学统计套装软体进行算术平均数、标准差、t考验、单因子变异数分析、皮尔逊积差相关等统计分析以验证假设。

I have been in all my Circumstances a Memento to those who are touch'd with the general Plague of Mankind, whence, for ought I know, one half of their Miseries flow; I mean, that of not being satisfy'd with the Station wherein God and Nature has plac'd them; for not to look back upon my primitive Condition, and the excellent Advice of my Father, the Opposition to which, was, as I may call it, my ORIGINAL SIN; my subsequent Mistakes of the same kind had been the Means of my coming into this miserable Condition; for had that Providence, which so happily had seated me at the Brasils, as a Planter, bless'd me with confin'd Desires, and I could have been contented to have gone on gradually, I might have been by this Time; I mean, in the Time of my being in this Island, one of the most considerable Planters in the Brasils, nay, I am perswaded, that by the Improvements I had made, in that little Time I liv'd there, and the Encrease I should probably have made, if I had stay'd, I might have been worth an hundred thousand Moydors; and what Business had I to leave a settled Fortune, a well stock'd Plantation, improving and encreasing, to turn Supra-Cargo to Guinea, to fetch Negroes; when Patience and Time would have so encreas'd our Stock at Home, that we could have bought them at our own Door, from those whose Business it was to fetch them; and though it had cost us something more, yet the Difference of that Price was by no Means worth saving, at so great a Hazard.

一般人往往有一种通病，那就是不知足，老是不满于上帝和大自然对他们的安排。现在我认识到，他们的种种苦难，至少有一半是由于不知足这种毛病造成的。患有这种病的人大可以从我的一生经历中得到教训。就拿我自己来说吧，正是由于我不满自己原来的境况，又不听父亲的忠告--我认为，我有悖教训，实为我的&原罪&，再加上我后来又犯了同样的错误，才使自己落到今天这样悲惨的地步。当时，造物主已安排我在巴西做了种植园主。如果我自己不痴心妄想发财，而是满足于逐渐致富，这时候我也许已成了巴西数一数二的种植园主了，而现在我却白白地在这荒岛上流落了这么多年，过着悲惨孤寂的生活。而且，我在巴西经营时间不长；就是在这段短短的时间里，我也获利不少。因此我确信，要是我继续经营下去的话，到现在一定拥有十几万葡萄牙金币的家财了。当时，我的种植园已走上了轨道，并且日益兴旺。可是，我偏偏把这一切丢弃，甘愿去当一名船上的管货员，只是为了到几内亚去贩卖黑奴。现在想来，我为什么要这样做呢？要是我守住家业，只要有耐心，经过一段时间之后，同样可以积聚大笔财富，我不是也可以在自己的家门口，从那些黑奴贩子手里买到黑奴吗？虽说价钱贵一点，但这点差价绝不值得自己去冒这样大的风险！

Through difference significance tests and analyses, it finds that (1) man students more possibly form identity achievement, and woman students more possibly form identity foreclosure and identity diffusion; and (2) the difference of self-identity status between man and woman students is associated with various domains; and (3) self-identity status between man and woman students have some similarities that identity exploration has the same importance to both; and (4) grade-one is a period when students face up to more identity crises, and grade-two is key period of identity formation, and grade-three is a developmental period of identity that provides the basis for re-solution of the emergence of new identity crises in grade-four;(5) there is a gradually enhanced direction from lower self-identity statuses to advanced ones from grade-one to grade-three, but there is also a direction that reentry into the identity crisis by grade-four. It indicates that the identity achievement formation does not mean the end of development of self-identity and proves that there is a continuous MAMA cycle in self-identity development; and (6) that students self-identity status mainly is identity moratorium provides some evidence for which there is a Moratorium in student development, and which self-identity formation is not easy; and (7) the development of student self-identity is associated with various domains, what students pay most attention to firstly is vocation, secondly life philosophy, and lower interesting in political and religious domains in ideology; for relational domains, students pay more attention to dating and friendship compared to sex role and recreation domain.

通过差异显著性检验和分析发现：(1)男生更可能形成成就型同一性，女生则更可能形成排他型和弥散型同一性；(2)男女大学生自我同一性的差异与不同的领域相关；(3)男女大学生自我同一性也存在相似性，同一性探索对于男女大学生同样重要；(4)大学一年级是同一性危机面对较多的时期，二年级为同一性形成的关键期，三年级为同一性的发展期，所形成的同一性为四年级所出现新的同一性危机的解决提供了基础；(5)从一年级到三年级存在从低级的自我同一性向高级的自我同一型转变的渐进增强，但到四年级又有重新进入同一性危机的趋势，说明大学生成就型自我同一性的形成并不意味着自我同一性发展的结束，证明了自我同一性发展的MAMA周期持续存在的特点；(6)学生自我同一性状态主要还处于延缓型同一性状态，进一步证明大学生发展心理合法延缓期的存在，以及自我同一性形成不是一件很容易的事情；(7)大学生自我同一性的发展与领域相关，大学生较为关注职业领域，其次为人生观领域，而对政治和信仰领域兴趣较低；另外，大学生对友谊、交往领域较为关注，对性别角色和活动领域关注程度相对较低。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。