Chenyang Du

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Digital map is getting increasingly popular as an intuitive and interactive platform for data presentation recently. Thus applications integrated with digital map have attracted much attention. But no offtheshelf systems or services could we use if the time span of maps be extended to historical ones. There are a large number of valuable ancient atlases in(More)
The nonlinear dynamic mathematical model was proposed based on the hydrodynamic force analysis of ring gate by CFD simulation in order to satisfy the need for multi-cylinder displacement and velocity control. According to ring gate motion style, QFT synchronous control mode was made into use in the ring gate opening and closing process. It shows that the(More)
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