China has entered the 3G era, this paper introduces the concept and function of 3G technology, analysis the characteristics of mobile learning. 3G technology has rich characteristics, which can be used for M-learning. When the 3G technology are applied in mobile learning, mobile learning will have new identities.
The resonator simulator provides a new method for researching the resonant sensor closed-loop circuit. In this paper, the mathematic model of silicon pressure resonator is established to design the circuit with resonator characteristic. Firstly the relation between pressure and the amplitude-frequency characteristic of the resonant beam is deduced.… (More)
The asymptotic waveform evaluation (AWE) is an efficient method for analyzing wideband electromagnetic scattering problems. As the number of unknowns increases, the size of MOM impedance matrix grows very rapidly, so it is a prohibitive task for the computation of wideband radar cross section (RCS) from electrically large objects or multi-objects using the… (More)