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Internet and web construct a platform for a distributed knowledge set, where users surf on it to achieve information and get knowledge services. Since the elements of this knowledge set are isolated and mass, it often cause users confused and got lost in it, personalized aggregate knowledge services are demanded. Knowledge services have deep relations with human cognition. From the Distributed Cognition...
The wet potential vorticity equation and its approximate form are deduced on the conditions of wet adiabatic and frictionless. The characteristics of conservation of wet potential vorticity of large scale weather systems are obtained by means of the scale analysis. The conservation of wet potential vorticity is similar to that of dry potential vorticity. The wet potential vorticity includes the...
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