Structural analysis of half variation function of coal thickness;

Recent years,variation function is becoming more important when we research reservoir heterogeneity.

All kinds of data can be integrated by variation function.

To improve the quality of the restored images,a variation function as part of regularization penalty term was introduced to the reconstruction algorithm of EIT.

Multiscale edge detection based on image variogram function;

New multiscale edge detection method for noise image based on variogram function;

This paper proposes a novel algorithm for segmentation of texture image based on variogram function.

The acquirement of robust variogram in reservoir modeling;

Application of variogram to automatic identification of sedimentary microfacies;

Sensitivity of variogram in stochastic modeling;

The result of semivariance analysis showed that the metal concentrations were correlated in .

Based on gridding sampling,soil water was conducted with Trime measuring system in pear orchard of Yantai Academy of Agricultural Sciences from April to August in 2005,and the soil water statistic characteristic,semivariance,fractal dimension and the law of temporal and spatial distribution were also studied.