查询词典 distribution parameter

First, we obtain the empirical Bayesian estimator of the scale parameter for the double exponential distribution based on LINEX loss function and the convergence rate of the estimate.

首先利用非对称的LINEX损失函数对双指数分布族刻度参数进行了经验贝叶斯估计，并讨论了该估计的性质，给出了收敛速度。

According to the classical thermodynamics, driving force equipartition principle has been proposed, and used to derive the optimum parameter distribution of counter-flow heat exchangers.

以经典热力学理论为基础，导出了驱动力均分原理，并将这个原理用于逆流换热器的热力学优化，利用这个原理和变分原理求得了逆流换热器的最佳参数分布。

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

In order to reduce error of Nu number at large Ra number and thermal diffusivity, we analyze truncation error of corresponding heat-transfer equation and introduce an adjusting parameter in the equilibrium distribution function.

针对一二阶精度模型在Ra数极高或热传导系数极大时，Nu数的计算与经验值相比出现较大偏差，分析LBM对应宏观热传导方程的截断误差后，在平衡分布函数中引进一个调节因子。

For robustness of parameter estimation of linear model,we obtain the maximal classes of the error distribution,in which Generalized Least Squares Estimate,Gauss-Markov Estimate of estimable function of parameters,and Minimum Norm Quadratic Unbiased Estimator of variance maintain their optimal statistical properties.

这些研究成果不仪具有比较深刻的理论意义，还具有较为广泛的应用价值。

In this part,it mainly reseach on if the parameter estimation of multi-variable logistic distribution has these good properties.

这一部分主要研究多元Logistic分布的参数估计是否具有这些好的性质。

This paper researches the estimation variance of the maximum likelihood estimator of the parameter with p norm distribution.

研究了具有p范分布的参数的极大似然估计的估计方差。

In section 4, we obtain some results when the individual claim amount obeys the exponential distribution with parameter α.

自然地，我们的结果是Gerber and Shiu（1998a）在常数利息力下结果的一种推广。

Finally, EM algorithm was used to statistical analysis for zero-failure data, and to estimate the exponential distribution's parameter.

最后将EM算法推广到无失效数据情形下，得出无失效数据下的指数分布平均寿命的一个估计。

A new definition of L parameter for considering the three dimensional stress distribution caused by hoop stress and torsion shear stress is made and the L solutions of these structures under various multiple loads are developed in the form of the simultaneous equations and a single exponential function equation.

另外还给出了在三维应力状态下的含缺陷结构L参量的新定义，针对多载荷作用下的周向裂纹管提出了求解L参量的联立方程法、幂指数法。

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。