查询词典 probability density function

Properties are discussed for a class of exponential sum function on recurrence relationship,integral formula,it has been proved that its curve configuration is single peak and it is a probability density,the application of this function is showed in proving equalities and a differential equation model of substance transform reaction.

对一类指数和函数的递推关系、积分公式、曲线的单峰形态等性质进行了讨论，证明了该函数为概率密度函数，并给出了该函数在等式证明、物质转化反应的微分方程模型等方面的应用。

According to the basic concept of Gamma function and Γ distribution,this paper gives out some expression including probability density,distribution function and basic numeric characteristic value.

依据Gamma函数及Γ分布的基本概念，给出了非均质性储层渗透率K的概率密度、分布函数以及基本数字特征的表达式。

The corresponding coefficient of deviation mean Φp and transcendental probability P are evaluated under different skewness coefficient Cs by deducing Pearson Type Ⅲ probability density distribution function according to the requirement of Military Specification Airplane Strength and Rigidity.

本文按军用飞机强度和刚度规范中规定的要求，通过对皮尔逊Ⅲ型概率密度分布函数的推导，完成了在不同偏态系数Cs下的离均系数Φp和超越概率P的对应数值编程计算，并得到了相应的计算结果。

I have calculated the species diversity for 3 layers (i.e. tree layer, shrub layer and herb layer) by means of various biodiversity index formulas and analyzed the relative species abundance using 9 models of the probability density distribution functions, such as, 3 Distribution (or Beta Distribution, Weibull Distribution, Lognormal Distribution, Poisson Distribution, Binomial Distribution, Negative Binomial Distribution ,Geometric Distribution, etc.. chi-square analyses were conducted on species distribution by using the chi-square test formulated by Pearson to test which distribution function is better, the result of chi square test made it possible to reject the other 8 distribution functions, theβdistribution function performs better than other probability density functions, it has a very close approximation, which can be used for the description of relative abundances of species in forest communities in this data set.

在相对多度研究上选用了九种概率分布模型，这九种概率密度分布函数依次为：贝塔分布、Weibull分布、对数正态分布、泊松分布、二项分布、负二项分布、几何分布、对数分布和奈曼A型分布，并进行了严格的卡方检验，结果表明：其它八种分布均被遭到拒绝，只有贝塔分布获得了通过，且拟合的结果非常理想。

Concetrating on turbulent transfer of evaporating liquid film in short-path distillator under high vacuum, applying probability density function model, two dimension mathmatics models had been build and simulated with a computational fluid dynamics software in the wiped turbulent evaporating liquid film fow.

以短程蒸馏在高真空条件下的湍流传递为研究对象，应用概率密度函数模型的基本理论，对蒸发器上液膜的湍流流场进行了二维两相流数学建模，并利用FLUENT流体力学计算软件进行模拟。

After ICA transform, the basis coefficients of speech signal are sparser. We choose appropriate probability density function to model the sparsity and develop two more effective shrinkage algorithms.

语音信号通过独立成分分析，增强了基系数的稀疏性，选择合适的概率密度函数描述这一特性，在此基础上提出了两种更有效的噪声压缩算法。

Direct sequence spread spectrum ; narrowband interference ; locally optimal detection ; maximum entropy ; probability density function

直接序列扩频；窄带干扰；局部最优检测；最大熵；概率密度函数

The probability density function of non-following headway and formulations of random variables of two kins of traffic flows are deduced.

本文以爱尔朗分布为基础，将高速公路上车辆分为队状跟车和非跟车两种类型交通流，用大量实地观测数据检验分布的特性，推导出非跟车流车头间隔的概率分布函数和仿真用的两种交通流的随机变量公式。

When gas superficial velocity was about equal to liquid superficial velocity,the probability density function of liquid holdup had a twin-peaked,when liquid superficial velocity was constant,one of the peaks would fade out and disa...

在段塞流动中，当气相折算速度和液相折算速度相差不大时，持液率概率密度函数呈双峰分布；当液相折算速度不变时，随着气相折算速度的增大，持液率概率密度函数第2峰值逐渐减小，直至消失而变为单峰分布；利用这一特征可初步确定段塞流动中气、液相流量相对大小。

When gas superficial velocity was about equal to liquid superficial velocity, the probability density function of liquid holdup had a twin-peaked, when liquid superficial velocity was constant, one of the peaks would fade out and disappear with the in crease of gas superficial velocity. Through using the characteristics, the relative size of gas and liquid superficial velocity can be set initially.

在段塞流动中，当气相折算速度和液相折算速度相差不大时，持液率概率密度函数呈双峰分布；当液相折算速度不变时，随着气相折算速度的增大，持液率概率密度函数第2峰值逐渐减小，直至消失而变为单峰分布；利用这一特征可初步确定段塞流动中气、液相流量相对大小。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了