假设

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。

The hypothesis of economic man is a most basic assumption prerequisite of western economics theory.

"经济人假设"是西方经济学理论一个最基本的假设前提，它认为人是通过深思熟虑的权衡和计算来追求最大利益的人。

In any case,rational economic man is still the basic assumption and starting point for economic study.

无论如何批判和修正，"理性经济人"假设仍然是经济学研究的基础假设与出发点。

Unfortunately, most current research only simply assumed the market was efficient and made an efficient market be their starting point of research, but little exploration has been made to the essence of EMH.

但是目前可见的众多文献也只是简单地假设市场是有效的并在此假设上展开研究，却很少深究有效市场假说的本质含义。

I agree with the word that a film review person of American says: If you are American clique series 一, the faithful epigone of 二, so you can like heartily " the United States is bridal " stunt of consecratory of all kinds, conversely if you are comedic to sex of this kind of toilet all along sniff, so I am forced to say, this film, not be that cup of your tea.

我赞同美国1位影评人说的话：你假设是美国派系列一、二的忠诚追随者，那么你会衷心喜爱《美国婚礼》贡献的各色噱头，反之你假设对这种厕所性笑剧向来5体投地，那么我只好说，这个电影，不是你的那杯茶。

On the assumption that the network delay changes randomly and the plant under the control of the NCS is a time-delay system with equality constraint, the NCS is modeled as a hybrid system.

在假设网络时滞是随机变化的，并且假设网络化控制系统的被控对象为一个具有等式约束的时滞系统的情况下，将网络化控制系统模型化为一个混合系统。

Besides, we have studied deeply error of two kinds which appeared frequently in the hypothesis testing (error of the first kind and error of the second kind), including the relations to error of two kinds and its effect to the result of hypothesis testing and the effective control of error of two kinds so as to be satisfying and etc.

另外，对假设检验中经常出现的两类错误（第一类错误和第二类错误）也作了深入的探讨，其中涉及到了两类错误之间的关系，两类错误对假设检验结果的影响以及如何有效的控制两类错误使之达到令人满意的程度等。

It seems to be a skeptical hypothesis: a hypothesis that I cannot rule out, and one that would falsify most of my beliefs if it were true.

这虽然看起来是个怀疑性的假设：一个我不能划去的假设，这伪造了我对一切的理解。

Thus the finite progression could be used to calculate the scalp potentials distribution in stead of the infinitive progression in a certain error range. A study on the convergence speed was conducted too.

无论脑电的正向问题还是逆向问题，都离不开头颅构型的假设，一般这些假设有均匀球模型、非均匀球模型、偏心球模型等。

To recover the time function of source, the deconvolution procedures based on least square method were developed, and to obtain the Frechet derivative of this function, we assumed it as a polynomial of tenth order, then the time function can be treated as a parameter to be identified.

至於波源时间之反求，则以最小二乘法为之，并假设其为十次多项式，而由此求出Frechet导数，并将其视为欲辨识之参数之一，由所得之结果得知，辨识出来之参数和事先假设者颇为相符。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了