Intrusion Detection Forensics System Based on Data Mining;

The beam fabrication yard forensics requirements on material management of passenger dedicated line

The digital evidence is different from other evidences, and the computer forensics must comply with strict process and procedure or otherwise it will lead to the fact that the obtained evidence would not be adopted for its lack of authenticity and trustiness .

To crackdown computer crimes,it is necessary to research the ideas and characteristics of computer crimes,to determine the forms of computer crimes by using scientific means and take efficient measures to investigate and obtain evidences.

There are many problems such as inappropriate means of evidence collection,lack of preservation technology,shortage of supplementary evidence.

The scene investigation stage s evidence collection work not only needs to satisfy the detection work the need, must meet criminal prosecution s needs, must therefore establish a weight the standard, investigates and enhances the scene investigation by the standard scene the quality.

The system should be constructed on the rules of evidence collection, examination, exlusion and corroboration.

On the Supervising Mechanism of the Quality of Material Evidence-taking;

Discussion on quality checking and witness sampling of construction project;

On ways to improve witness sampling and delivery for checking system

This paper depicts briefly the purpose, basis, range and method of witness sampling work, emphasizing particularly on civil engineering of stations and hydrotechnological protection for long distance pipeline.