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.

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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.

依據(jù)Gamma函數(shù)及Γ分布的基本概念，給出了非均質(zhì)性儲層滲透率K的概率密度国产男女猛烈无遮挡动态图蜜臀、分布函數(shù)以及基本數(shù)字特征的表達式欧美日本亚欧在线观看欧亚。

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.

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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.

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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.

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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.

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

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

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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...

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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.

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