Because empirical distributions of rates of return on risky securities have characters of skewness and excess kurtosis,this article puts forward studying portfolio selection model conditional on non-normal stable distributions.

In this paper, the quasi-normal approximation of the fourth order moments and the clipping ap-proximation of the third order moments are expounded and verified with the observed turbulence datain the surface layer.

Using normal distribution to identify oil layer and water layer in Qingxi complex reservoir;

The applied studies of normal distribution and lognormal distribution in the calculation of cefixime s bioequivalence;

Designing of SAS macro program for statistic form of measurement data on normal distribution;

This paper assumes that the volume of the subsurface settlement troughs due to tunneling is equal to the ground loss and the shape of the troughs can still be represented by a Gaussian distribution .

This method uses statistics and adopts gaussian distribution model to analyze the key performance index.

We also assume that the phase error on the aperture led by the random surface error obeys the Gaussian distribution with a zero mean,u.