This study,based on the distance decay of information transmission theory and information flow diffusion theory,designs for the study system of distance decay effect in network information flows in China.

As a classic quantitative model the distance decay model has been widely used in various branches of research.

Although there are case studies on such issues as mathematical modeling of distance decay of tourists from a tourist site, its market potential and actual market structure, many questions remain.

Suitability analysis of ground motion attenuation relation in estimation of near-field ground motion for small and moderate earthquakes;

A new two-steps method for fitting ground motion attenuation relationship;

A new attenuation relationship of peak ground acceleration and peak ground velocity on bedrock site is established .

Study of seismic intensity attenuation law in vicinity of Chongqing;

Study on ground motion attenuation relationship of moderate earthquake risk areas

Application of improved two-step method on establishment of ground motion attenuation relationship

It is to develop updated ground motion attenuation relationships by a comprehensive and highly interactive research program.