电子商务系统的技术构建和成功因素

论述了电子商务在当今经济社会的重要作用，提出了电子商务系统构建的技术方案，并分析了其成功的关键因素。     

JZ200型搅拌机出料锥口圈成型工艺改进

通过理论分析和计算，提出了ＪＺ２００型搅拌机出料锥口圈成型的新型加工工艺方式，达到了节省材料、提高效率、改进加工性能，提高部件质量的效果，较大幅度降低了部件生产的成本。     

Design and simulation of self-powered radio frequency identification (RFID) tags for mobile temperature monitoring

This paper presents a design for a self-powered radio frequency identification (RFID) tag with a thin film bulk acoustic reso- nating piezoelectric power supply (PPS), which can be used for portable remote temperature monitoring. We call this system a PPS-RFID for short. The RFID systems have been found to have many applications in the internet of things (IOT) in the past decade. But semi-active RFID tags require an onboard battery which limits their applications in many fields. For these reasons, our research focuses on power sources for the RFID tags. This paper emphasizes the circuit design and simulation of PPS. In our tests, 0.283 mW was generated by PPS at 1 Hz vibration by a 650 N impact force. The results showed that the integrated PPS could supply sufficient power for the designed PPS-RFID tag. The PPS-RFID tag can be widely used for temperature monitoring during mobile transport of perishable items such as medicines or food.