查询词典 standardized normal distribution

Enterprises enhance their competition strength by shortening the delivery time to customers. However, since customers' demand changes rapidly, many enterprises have change their business model from make-to-stock to make-to-order. Consequently, the stocks which are used to buffer between production and distribution is reduced which results in a closer interaction between production and distribution and increases the essentiality of integrating the production and distribution stages.

企业为了提升竞争力而缩短订单送达顾客的前置时间，以及顾客对於产品的多样化需求下，企业的生产型态由存货生产转为接单式生产，使得原本作为生产与配送阶段间缓冲的存货逐渐的减少，造成了生产与配送作业间的互动更加密切，同时也增加了研究如何整合此两阶段问题的必要性。

The structure and heterogeneity of urban green space in the five districts in Fuzhou , which included the main tree species with diameter at breast height distribution, height class, health class, importance value, relation and the green space patches with areas distribution, perimeter distribution, porosity, connectivity, marginal density, dominance, the characteristics of geo-statistics and so on, were studied in quantification by the use of the principle of landscape ecology combining with the method of studying porosity and connectivity and geo-statistics.

本研究应用景观生态学的原理结合孔性、连通性研究方法和地统计方法对福州市五个行政区的绿地结构和异质性进行了量化研究，包括：城市绿地主要树种、树种的胸径分布、树高等级、健康等级、重要值和多样性、主要树种间的关联度以及绿地斑块大小分布、周长分布、斑块的孔性、连通性、边缘密度、优势度、斑块的地统计学特性等。

Suppose is two-dimension random variable, call the probability distribution of measure X marginal distribution on X for ; the probability distribution of measure Y

Definition 2.10 设是二维随机变量，称分量的概率分布为关于的边缘分布；分量的概率分布为关于的边缘分布。

We derive exactly the main characteristics of the two models: degree distribution, second moment of degree distribution, degree correlations, distribution of clustering coefficient and diameter, which are partially determined by the parameter.

利用图论和组合数学的方法，解析计算了交叉模型DCM与变体模型GPSFW的度分布、二阶平均度、度相关、簇系数和直径等主要拓扑特性。

7 Moment distribution method : know the concept of moment distribution method ; master the computation theory of moment distribution method for Continuous beam and frames without side-sway

力矩分配法：理解力矩分配法的概念，会用力矩分配法计算连续梁和无侧移刚架。

The spatial distribution parameters, parameters of Iwao model and Taylor's power law were used to analyze the spatial pattern of the lavae of Argopistes tsekooni Chen in glossy privet. The results showed that its spatial pattern was negative binomial distribution, with colony as its basis component and its colony distribution was random.

应用空间分布参数、Iwao回归法和Taylor幂法进行分析表明，女贞瓢跳甲幼虫在大叶女贞上呈负二项分布，分布的基本成分为个体群，且个体群为随机分布。

We presented a method to compute the premium coefficient for each level of the scale when the claim frequency distribution is assumed to conform negative binomial distribution or the nonparametric mixed poisson distribution, the theoretic models of bonus-malus systems are applied to the practical bonus-malus systems model with limited scale by this way.

提出了当索赔次数服从负二项分布和非参数混合泊松分布时确定奖惩系统各等级费率系数的方法。

Based on the results of morphology taxonomy and themain distribution regions of Lepidium in China, these resuls that the ideal regions forintroduction mainly lay in the northeast and north of China by GRGs were basically IIconsistent with the main native distribution regions of fifteen plants of Lepidium in China.Especially the native distribution regions of L.sativum that had the nearest kinships withMaca by morphology taxonomy were totally layouted as the ideal regions for introduction.

通过灰色关联度分析所得的适宜引种区和较适宜引种区主要分布在东北、华北地区的结果与 15 种独行菜植物在中国的主要分布区基本一致，尤其是与玛咖相似性非常接近的家独行菜，它的分布地区皆被划分为玛咖的适宜引种区。

The empirical results show that the FIGARCH model based on the skew student-t distribution is better than other distribution on the assumption in estimating the value of the dynamic Var, because it is better to reflect the risk of actual rate of return and it is proved to be better to choose the skew t-distribution model through the Pearson test.

实证结果表明，基于偏态t分布下的FIGARCH模型测算的动态Var值克服了其他分布假设上的不足，能够较好的反映金融收益率的实际风险，最后在该分布下的Pearson吻合度检验也证实了模型分布选择的正确性。

Taking HPAM solutions as an example, the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is calculated; the distribution of velocity, flow rate and stability parameter is obtained; taking HEC solutions as another example, the flow of second order fluid in eccentric annuli with the inner cylinder moving axially is calculated too; the distribution of velocity and stress is obtained; the effect of eccentricity and axial movement on stress distribution on the outwall of the inner cylinder is analysed.

在理论上，分别用二阶流体和幂律流体模型描述聚合物驱油井产出液的非Newton流变性；分别建立了双极坐标系下二阶流体和幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了幂律流体在内管做轴向往复运动的偏心环空中流动的稳定性参数和流体在内管壁上的压力分布计算公式；建立了二阶流体在内管做轴向运动的偏心环空中流动的流体在内管壁上的压力分布计算公式。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。