分布参数

In order to reduce calculation error, the frequency distribution of average values is used to compute the mixed distribution's digital features of each component distribution, thereinto, the number of the component distribution is determined by AIC, choose the number that meets the minimum value of AIC as the component number of mixed distribution, and the other parameters are estimated by EM algorithm; Secondly, because each component distribution is corresponding to a kind of major gene genotype, according to the values of the average and variance of the each component distribution, we can use the limit error of the normal distribution to plot each individual into the correspondent component distribution, namely into correspondent major gene genotype. Then we regard each major gene genotype as a treatment level of one-way analysis of variances, and the one-way multivariate analysis of variance is carried out to calculate the covariance matrix of major gene effect, covariance matrix of polygene effect, covariance matrix of environment effect and so on; At last, combining the weights of the each component distribution of mixed distribution, we can calculate the variance of major gene effect, the variance of polygene effect, environmental variance and the genetic gain of the quantitative trait.

为减小计算误差，本研究采用均值的频数分布来计算各成分分布的数字特征，其中成分分布个数根据AIC准则，选择使AIC值达到最小的成分分布个数作为混合分布的成分分布数，分布中其它参数的确定利用EM算法来估计；其次，每个成分分布对应一种主基因基因型，根据各个成分分布的均值和方差，利用正态分布的极限误差将每个个体划分到相应的成分分布中，即相应的主基因基因型中，将每种主基因型作为单因素方差分析的一个处理水平，对其进行单因素的多元方差分析，分别计算主基因效应协方差阵、多基因效应协方差阵、环境协方差阵等参数；最后结合混合分布中各成分分布的权重即各主基因基因型的分离比例，计算主基因效应方差，多基因效应方差和环境方差，以及遗传力等参数，进而计算该数量性状的遗传进展。

In this paper, the conditional mean and its applications to Bayesian estimation of the parameters and reliability measures of common failure distribution which include two-parameter exponential distribution, left truncated two-parameter exponential distribution, normal distribution and lognormal distribution are discussed.

本文讨论了条件均值对某些常见失效分布的参数与可靠性测度的Bayes估计的应用，这些分布包括，双参数指数分布，左截尾双参数指数分布，正态分布与对数正态分布。

Under the basis of physiological data, a non-linear and unsteady comprehensive mathematical model of microcirculatory dynamics with distributed parameters is developed. Hemodynamics, interstitium dynamics, lymph dynamics, dynamics of protein transport, oxygen dynamics, dynamics of heat transfer, and myogenic and metabolic regulation procedures are included. The interactions between these factors are comprehensively exhibited. The influences of arteriolar vasomotion and non-linear viscoelasticity of blood in arteriole are considered.

根据微循环系统的生理情况，建立了微循环系统动力学非定常、非线性分布参数模型，包括血液动力学、间质动力学、淋巴动力学、蛋白质传输动力学、氧动力学、热量传输动力学和肌原性与代谢性调控过程，综合反映了它们之间的相互作用，并考虑了微动脉自律运动和血液非线性粘弹性的影响。

Both from practical and prospective viewpoints, this work outspreaded from two interpenetrating fields. On one hand, the pseudo-fluid approach closured by the KTGF was improved. On the other hand, a CFBB model with continuous parameter was established to simulate the flow, combustion as well as heat transfer behaviors. The design of a CFBB was also conducted.

本着务实和前瞻的精神，本文工作从两方面展开：其一是从微观机理出发，发展并改进颗粒流体动理论封闭的拟流体模型；其二在机理研究基础之上，用拟流体观点建立一套连续分布参数的锅炉模型，模拟循环床锅炉中的流动、燃烧、传热等过程，并进行设计研究。

In consideration of those mentioned above, a distributed-parameter dynamic mathematical model of the utility boiler furnace and working fluid in the tube is developed in this paper.

鉴于上述情况，本文建立了一套用于电站锅炉炉膛和管内工质的分布参数动态数学模型，模型能够深入、全面地从机理上反映模拟对象的动态特性。

A one-dimensional dynamic model is developed for the working fluid in the boiler tube, it is convenient to be connected with furnace model, in order to simulate the dynamic differences of the in-tube working fluid at different positions of the furnace.

在建立的管内工质动态模型中考虑了两相区内汽水之间的相对滑移，以及流体动量沿流程、随时间的变化对动态特性的影响；对过冷区、饱和区和过热区都采用了分布参数模型。

The property and the calculation of the distributed parameters and loss of the transmission lines were analyzed theoretically.

从理论上分析了传输线分布参数和损耗，利用0.13μm CMOS工艺制作了特征阻抗分别为50和70Ω的微带线和共面波导元件库，在0.1—30 GHz频率范围内利用网络分析仪和SOLT测试技术进行测试。

This model realizes the analysis of mole concentration and energy conservations, and the electrochemical reactions, and satisfies the quick dynamic simulation.

该模块在组分和能量守恒的基础上，考虑了电化学反应模型，能反映燃料电池的分布参数特性，并可满足动态仿真需求。

In addition, the equivalent circuit of this device is presented, where the significant distributed parameters are included.

另外，考虑到分布参数的影响，给出了器件的等效电路模型，重点分析了串联电阻对器件性能的影响。

A Computer program of the hot starting and shutdown transients of a simple pressurized liquid bipropellant rocket engine is given,based upon the idea and basic equations provided by W.T.Webber etal.and mainly applying priem's combnstion model and feeding system distribution para- meter model.The hot starting and shutdown transients are calculated on 441B-Ⅲ digital computer and the elementary results arc obtained.

本文依据 W.T.Webber 等人提供的思路和基本方程，基本采用了 Priem 的燃烧模型和管路系统分布参数模型，为简单的挤压式双元液体推进剂火箭发动机热启动——关车瞬变工作过程编写了计算机程序，并在441B—Ⅲ型电子计算机上进行了计算，得出了初步的结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。