With the rapid development of the Internet era, cell phones play an essential and indispensable role in nowadays life. Smartphones have profoundly influenced our social relationships and our daily lives. Generally speaking, the most common tools we hear about in our daily lives are QQ, WeChat, and other Internet communication services that allow users to send text messages, pictures, and documents, providing a more convenient and faster medium for people to communicate and chat. The popularity and convenience of mobile technology have changed people’s habits of communication. People no longer need to rely on computers to communicate, and computers cannot communicate anytime and anywhere. In the kernel of Linux and Windows, as long as the Message Hooker will install, it can monitor the messages of other programs, including WeChat and QQ, in this research. We can provide relevant law enforcement officers with effective evidence collection so that criminals will not be able to hide. The suspects often delete their WeChat or QQ records after committing the crime. It impossible for our law enforcement agencies to obtain evidence directly from the cell phone and the crime facts. Our research hopes to use some technology to help law enforcement units effectively obtain strong evidence in the iPhone not to hide the crime facts.
In the context of the revision of the new version of the Vocational Education Law, the existing comprehensive competitiveness ranking of higher vocational institutions and the setting standards of undergraduate level vocational institutions were combined. The 56 institutions with good development in the field of vocational education were used as the research objects, and the index extraction and weight calculation of the collected data were carried out by using factor analysis method. Principal component analysis was used for indicator extraction, and the Kaiser normalized maximum variance method was used for weight calculation. The classification of indicators at each level is analyzed and corrected using the Kmeans method. The final evaluation system will be set with reference to the actual situation. It is expected that the evaluation results will make effective suggestions for the development of the institutions.
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