Based on the principle of the bench marking method,reengineering objectives are analyzed,and detailed steps of reengineering and application case study are provided.

The Theory and Application of Benchmarking in Business Process Reengineering;

After analyzing the prospect of benchmarking in highway quality control,the paper mainly probes into enterprises benchmarking strategies and internal and external benchmarking methods in the selection phase of benchmarking and points out some key issues needing attention in the process.

This paper sums up the concept and origin of the theory of benchmarking, introduces five stages of the development of the theory of benchmarking, expounds the types of the benchmarking and the optimum flow of carrying out the benchmarking, and puts forward some problems needing attention in carrying out the benchmarking.

A discussion covers control instability and aim target in nonlinear iterate systems with negative feedback method which based on Lyapunov stable theory.

External force was used to control instability and aim target at nonlinear system.