分布参数

The two important parameters, lining pressure distribution and non-dimensional geometric parameter, are investigated.

论文对影响湿式多片制动器工作性能的重要参数——衬片压力分布规律和无因次结构参数进行了理论研究。

Using genetic algorithm, established BRDF models of the silicon carbide paper and granite material and optimized parameters retrieval models.

采用遗传算法建立了金刚砂和大理石材料的双向反射分布函数的参数模型，对模型进行参数反演时，通过遗传算法进行优化。

In chapter 5, we use MEM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available.

第五章将利用MEM算法对基于分组数据的威布尔分布和对数正态分布进行参数估计，并进行模拟表明此方法的可行性与有效性。

This article first discusses the significance of homogeneity of variance, then studies the general method of transformation for homogeneity of variance on the relation between the data mean and the variance when population distribution is known ,and it uses the Mathematica software to analyse the variety rules between the parameter and the variance in the corresponding transformation.

从方差非齐性数据处理中的变换的必要性入手，根据数据均值与方差之间的关系研究了总体分布已知时的方差齐性变换的一般方法，并利用Mathematica软件分析相应变换中参数与方差之间的图形规律，最后介绍了总体分布未知时的BoxCox变换的一般原理。

Experimental results show that the multifractal spectrum is an important characteristic parameter, which enables the quantitative analysis and explanation of the homogeneous space distribution and size distribution of Ag particles thickness of films from the multifractal issue.

实验结果表明，多重分形谱是一种有意义的表征参数，能够从多分形角度对薄膜中Ag厚度的空间分布均匀性和尺寸分布进行定量化的分析和解释。

A b distribution function is proposed to replace the homogeneous distribution function in the particle optimal algorithm. It use a dynamic method to adjust the parameters of b distribution random function to improve the speed and quality of the feasible solution.

提出使用b分布函数来代替均匀分布函数的粒子群优化算法，在产生可行解的过程和迭代过程中动态地调整β随机函数的参数，以提高产生可行解的速度和质量。

For verifying the proposed approach, the EEG potential simulated from current dipoles in an ideal homogeneous medium are generated. The localization discrepancy and the moment orientation discrepancy are used as index for measuring the estimation accuracy.

为了验证这里所提出方法的正确性，脑波模拟讯号是由电偶极在理想的均匀介质头颅模型下所得到；定位偏移量及偶极矩方向偏移量两参数被用来当做估计值准确度的指标，另外，初始值估计法的偏移量分布可用数学中的珈玛方程式描述出分布的特性。

Results of calculation example show that using the proposed model, higher forecasting accuracy can be achieved by use of less historical data; the obtained forecasting parameters not only can be used to evaluate the wind resource of wind farm, but also by use of inverse operation of probabilistic distribution the wind speed sequence that consists with the forecasted parameters can be obtained.

算例结果表明，该模型可以用较少的历史数据获得较高的精度，而预测所得的参数既可以用来评估风电场的风资源，又可根据概率分布的逆运算得到符合预测参数的风速序列。

Based upon the general equations of a trans-versely isotropic foundation, the stress functions and the theory of Fourier transforms , the basie displacement so-lutions for a transversely isotropic body under horizontal concentrated loads are obtained.

根据横观各向同性体的基本方程，运用应力函数、傅氏变换和傅氏逆变换理论，得出了横观各向同性地基在水平集中荷载作用下的基本位移解，然后利用积分的方法分别得出了横观各向同性地基在条形面积上水平均布荷载、水平三角形分布荷载及水平梯形分布荷载的位移计算公式，并利用实测的一组弹性参数，将横观各向同性地基中的相对位移与现有的计算理论给出的各向同性地基中的相对位移通过图形作了分析比较，得出了一些有益的结论，以供岩土工程设计人员参考。

This project also obtained several limit theorems for some important dependent random variables and stochastic processes, such as the Strassen law of the iterated logarithm for negatively dependent random variables, strong limit theorems for mixing random vectors in Banach spaces, sample path properties for two-parameter fractional Wiener processes, and so on.

随机环境中的随机变量与随机过程的研究在国内外相当活跃，本项目主要研究它们的极限性质，着重研究了随机风景中随机变量与随机过程的极限性质，主要取得了以下几个结果：首先对简单对称的Kesten-Spitzer随机游动在低阶矩的条件下给出了强逼近，大大减弱了前人要求任意阶矩的条件，然后对独立风景中的一般随机变量给出了强逼近的一般性结果，由此导出在风景和随机变量都只具有低阶矩的条件下的独立但不同分布、混合相依变量的强逼近，在只有弱高于二阶矩的条件下得到了重相对数律和弱收敛；给出了连续时间参数的Brown风景中Brown运动和稳定风景中稳定过程的滞后增量和连续模等精确样本轨道性质；同时给出了一些重要的相依随机变量和过程的若干极限定理，如负相关随机变量的Strassen重对数律、抽象空间上混合相依变量的一些强极限定理成立的充分必要条件、两参数分数Wiener过程的样本轨道性质等。

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。