Based on secondary waterproofing project for Shenzhen Children s Palace the article discusses mainly waterproofing measures that should be taken after waterproof layers cracked due to difference in coefficient of deformation between steel and concrete roofs and gives emphasis to important role the joint treatment plays in waterproofing project.

Combined with practical work and the procedure of top-down construction method the construction methods of underground continuous wall,intermediate supporting pile,earth excavation of basement are introduced as well as the measures for joints treatment.

Surface provides us with point cloud processing and curve editing and UG provides us with solid modeling,with which the right STL file can be established and the integration of reverse engineering and rapid prototyping is achieved.

Through research and experiment,JXTA technology was applied to point cloud processing.

Implementation of the radar plot processing system based on VxWorks;

In order to deal with the local hotspot caused by extreme access in enterprise information distributed storage,a novel distributed storage hotspot treatment strategy was presented.