Classical statistical analyses show significant spatial variability of soil erodibility K values at a scale of small watershed, the variance coefficient of which is 39.94%.

Using mathematical morphology to get grey scale matrix of facial imagines, in addition extracting their grey characteristics through K-L transformation, these unique eyes and faces are be formed.

In the Kelvin scale, which has no negative figures, the symbol for degrees is not used after the number. So the freezing point of water is 273k, not 273 ~ K.