According to the current status of the research of 3D spatial data model,a grid representation of 3D vector model is presented,which represents the 3D spatial structure by recording the key points couple on the 2D grid.

An Empirical Study of Trans-corporation’s Key Point Control to Sino-foreign Joint Venture;

A Study on Key Point Standardization Management of Mobility Communication Engineering Project Management;

4 main transformer moving,discusses the key points of standardization developing ant.

Key Points to Further Economic Integration between Urumqi and Changji——Research Report on A Study on Social and Economic Development in Urumqi and Changji;

Key Points for Zone Quality Control of Medical Instruments Management

One traffic accident reconstruction method was brought forward based on the deformation of the key points on auto-body.

Application of algorithm for calculating tension at critical points to belt conveyor;

HACCP (Hazard Analysis and Critical Control Point) was applied to the preparation of soybean ice cream to find out the critical points affecting the quality.

The paper presents a novel edge thinning algorithm named as connectivity preserved edge thinning algorithm, which combines the detecting strategy of the connectivity critical point with the estimating method of the edge direction.

Study on Key Nodes Control of Project Manufacturing Process;

Appraising method and distributing characteristics of key nodes of enterprise networks responding to customer demand;

Method of recognizing key nodes based on connectivity

A minimum cost multicast routing algorithm is presented based on key nodes;this algorithm firstly choose k minimum cost nodes in a network by integral programming idea.