In addition, to imitate these key points, the enterprise who implements imitation strategy still needs necessary resources, which can be obtained by overpassing "Crucial Resource Area".

Aiming at the critical areas coverage NP-complete problem,a heuristic critical areas coverage optimization algorithm(CACOA) is proposed.

Aiming at the critical areas coverage NP-complete problem in Wireless Sensor Networks(WSN),this paper proposes a Critical Areas Coverage Heuristic Optimization(CACHO) algorithm.

A new reduction method based on critical resources and primary resources is proposed.

Aiming at the problem,an job selection algorithm with critical resource constraints is presented,whose purpose is to take maximum profit under due-date limit.

Uncertainty arising from two way: first,the property characteristics in critical resources.

The mistake arrangment comes from unclearness of firm s critical resource.

A website categorization system based on key resource;

Research on key resources can be used to construct the website.

The growth mechanism and the disposition mechanism of key resources in enterprises;

,the power to get access to and use the key resources.

This paper carries on a thorough research on the access control of the key resource on the Windows OS,and put forward a kind of method of protecting the key resources of the system,which adopts the technique of Windows drivers and system call interception in kernel,implementing the strengthen access control of the key resources such as the file,register table and progress.