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Column Family has been used in NoSQL Database, and we have to think over how to divide the Column Family in the designing of NoSQL Database. But the dividing of column family is similar to the vertical partitioning in the distributed database. And there are some object functions of vertical partitioning in the database system, but they do not fit to the NoSQL Database. In this paper we will propose...
An improved A* search algorithm was proposed to solve Path-optimization problems in emergency actions. By altering the search direction and reforming the evaluate function, make it more suitable for dealing with large Path-optimization problems. Through the instance validation of emergency command air-defense system in a certain city, get better results.
In large-scale power system, low frequency oscillation is becoming a serious threat to the power system security. Online identification is used to monitor the low frequency oscillations and control the system damping. This paper presents a method to identify the characteristic of low frequency oscillations, and describe the online implementation strategy. The simulation result of real power grid validates...
In this paper, it presents an effective caching algorithm based on random access with the finite storage size in distributed server architecture for networked video services. Under the general video traffic condition, it is observed that the storage size and total popular contents of edge video server affect the performance of the total video sever system, and channel bandwidth between edge video...
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