分布的

As traffic distributions in time and space are associated with each other, many factors are considered for setting up travel distribution model based on change of time.

由于交通在时间与空间上的分布相互关联，考虑了交通产生点和吸引点在空间的分布、出行量大小和职业类别比例等影响因素，建立了居民通勤、通学出行随时间分布的模型，并根据错峰上班实施前后出行随时间分布的规律，建立了错峰上班的交通影响模型，给出了评价交通效益的参数，用于该策略的可行性研究。

Then we define the stable distribution with four equivalent ways and analyze its properties carefully. To study the stable distribution, we must know how to simulate its random variables. We can learn it intuitively by watching its plot of density function.By adding an auxiliary variable in the Chapter 4, we estimate the four parameters using Gibbs sampler.

接着给出了稳定分布的四种等价定义方法，详细的分析了稳定分布的性质，提出如何利用简单随机数产生稳定分布的随机变量以便我们进行分析研究，借助稳定分布近似密度函数的图形我们对它的特征会有更加直观的认识。

If there exist a family of copulas, we could construct any bivariate or multivariate distribution functions of given margins by Sklars theorem and these distributions are always very useful for simulation.

如果我们有一族copula，那么根据Sklar定理，可以构造出任何指定边缘分布的二元或多元联合分布函数，而这些分布函数在建模与模拟方面是非常有用的。

For the aforesaid reasons, in the second chapter ,this article estimates some parameters in the two-parameters Weibull distribution by the hybrid ALT method,and gives the inverse moment estimator for the shape parameter,at the same time the confidence interval of the accelerated coefficient is given .

基本研究问题：设应力水平V下产品的寿命服从两参数威布尔分布，则在混合应力加速寿命试验下产品寿命T的分布函数为：记T/t_0=X则X的分布函数为其中令λ=θ~m由上式得λ的极大似然估计又由(2.2.1)式知，是来自均值为λ的指数分布的次序统计量记则有又由引理2.2.1，若又、r，长，乞=1，2，…，n，则有(1)2 。。

Weibull distribution is widely used as a life distribution, and estimating lower confidence limit of reliability is important. But so far this problem has not been well solved if when the sample size is small.

威布尔分布是使用非常广泛的寿命分布，关于威布尔分布的可靠度的下限估计是一个有重要意义的问题，文献中有很多讨论，但当样本量较小时，关于二参数威布尔分布的可靠度的下限估计至今没有非常有效的方法。

Compared with the discrete distribution, we defined a comparison function for continuous distribution, and pointed out the relationship between the discrete distribution and continuous distribution.

仿照离散分布，定义了连续分布的比较函数，并沟通了离散和连续分布的伴随关系。

For simply research, HMM assume the time of continuous states staying obey geometry distributing.

为了研究方便，隐马尔科夫模型假设连续段长分布的时间是服从几何分布，但这与真实的分布规律并不相符。

Orientation Distribution Function reflects statistical distribution of crystals orientation in polycrystal in macrostructure. It breaks through limitation that the Pole-figure method, the inverse pole figure method which represent polycrystalline orientation distribution use one or two dimension graph and establish a three dimension space to describe the polycrystalline orientation distribution.

取向分布函数从宏观整体上反映了多晶体各晶粒取向的统计分布，它突破了传统的极图法、反极图法用一维或二维图形来描述晶体的空间取向分布的局限性，可实现晶体取向分布的三维空间描述。

The class of distribution of decreasing variance residual life an that of decreasing percentile residual life are investigated,some their characters are also given,and their characteristic result is given when the general moments of residual life function are taken as their basis.

阐述了递减方差剩余寿命分布与平衡分布的平均剩余寿命函数的密切联系；研究了递减方差剩余寿命分布类及递减百分位数剩余寿命分布类，并且给出了它们的一些特征；给出了以剩余寿命函数的一般矩为基础的特征结果。

The study results show that:①The distribution of Cd in shallow surface soils is characterized as: The content of Cd in lacustrine deposit, alluvial lacustrine and alluvial-diluvial low-lying plain is 1.4 to 1.8 times as high as in alluvial-diluvial high valley flat and alluvial-diluvial high bank physiognomy areas.②The content variation of Cd in horizontal distribution was controlled by clay primarily and OrgC secondly. The variation of OrgC was major factor that affected the content variation of Cd in vertical distribution.

结果表明：①研究区浅层土壤中w的分布特征为，湖积低平原区、冲－湖积低平原区及冲洪积低洼平原区地貌成因类型土壤中的含量明显高于冲洪积高漫滩平原区、冲洪积高亢平原区地貌成因类型土壤，其质量分数差异达1.4~1.8倍；②研究区不同地貌成因类型土壤中，w的横向分布特征主要受黏粒含量分布的控制，其次是wC(下标 org；垂向分布特征的主要控制因素是wC

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。