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Smart-phone is a major channel of interpersonal communication. As the rapid development of communication technology, its function is becoming ever more powerful. Meanwhile, people are far more dependent on it. This study aims at investigating how long undergraduate students spend on their smart-phones everyday and the relationship between the time of smart-phone use and loneliness, as while as examining...
With the rapid extention of the electric transmission network, the workload of the inspection of transmission lines increases dramatically[1]. Unmanned fixed-wings aircrafts (UFV), a kind of unmanned aerial vehicle (UAV), can be applied to transmission line inspection to improve the efficiency. This paper introduces and discusses the application of a UFA to transmission line inspection. The inspection...
This test method adopted the method of four-wire test to eliminate the influence of the lead resistance and the contact resistance effectively. And design the automatically selects the range of the circuit to measure the values of different resistance. We use two A/D converters to enlarge the values of voltage and current at the same time, and using software programming to realize the processing and...
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