Notice of RetractionStudy of knowledge management in the application of cost control

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Using system engineer principle, product life cycle is divided into design process, manufacture process and sale process; further more, process is divided into tasks, and task is broken down into activities. According to the characteristic of process, task and activity, different roles are designed for target cost control, task coordination, task implementation and task completion. Various roles´ duties and required knowledge are accordingly determined. Through the decomposition of cost objectives and tasks, roles use knowledge for object control, the object of cost control and product life-cycle activities can be matched.