The socio-economic attribute of geo-hazard made us distinguish it fiom the traditional engineering geology study. It will get more social benefit from the analy
By using digitized land use maps of Beijing in 1982, 1992 and 1997 and employing GIS spatial analysis techniques, this paper conducts an empirical study on the
The flow through the throat-type energy-dissi-pators is calculated by using an axis-symmetrical K-ε turbu-lence model. The velocity field, the pressure field a