This technique may be an excellent option for the treatment of complex situations such as esophagectomy after pneumonectomy.

In recent years, data service has been gaining popularity in embedded system and general packet radio service (GPRS).GPRS is one of the next-generation wireless communication technologies. This paper takes advantage of seamless GPRS data coverage and its good capacity to combine GPRS technology and GPS system, realizing real-time positioning of vehicles. This paper describes structure of the system using GPRS and GPS technology for real-time data acquisition and transmission. It transmits the data through GPRS network to the background system for centralized data processing and analysis. The analysis results are given back to administrator rapidly and timely through the wireless network. This module not only saves development and maintenance costs of a private network, and takes full advantage of the unique advantages of GPRS. Finally, this paper summarizes characteristics and advantages of the system in practical application and has good prospects.

Along with the construction of the strong smart grid, many intelligent terminal equipments and wireless communication devices are widely applied to the smart grid, bringing convenience to the construction of the smart grid business systems as well as some serious security issues of confidentiality. The data transmitted through the wireless channel by various types of wireless power terminals in the wireless network communication is vulnerable to eavesdropping and other attacks. In this paper, we proposed an security access architecture and authentication protocol of power terminal based on the theory of the trusted network connection (TNC) and gave the specific authentication protocol process based on the practical application in the smart grid environment. Eventually, we confirmed that the design of the scheme can ensure the integrity and security of the terminal itself according to the safety analysis, so as to build the trusted computing environment of electric power communication network system, ensuring the safety of the whole smart grid application environment.