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Considering limited storage space, limited energy and other constraints of sensors, a query mechanism based on data caching in Multi-Sink sensor networks is proposed. This mechanism extractes the common subtree of a network firstly, and then caches a sink's query results at the common root of a common subtree according to certain cashing strategies. When some other sinks submit the same query, it...
Quickly acquiring the data required from network node environments to share files in the vast P2P network environment is a challenging job. Many researches have proposed data sharing mechanisms and scheduling methods in P2P environments, however, most focused on the efficient utilization of network bandwidth, using greedy methods to deliver the data to the client end as early as possible. However,...
This paper focuses on the problem of improving throughput of distributed query processing in an RDBMS-based data integration system. Although a buffer pool can be used in an RDBMS to cache disk pages in memory to reduce disk accesses, it cannot be used for data integration queries since its foundation, the memory-disk hierarchy, does not exist. The lack of a data sharing mechanism limits system throughput...
We present mPlatform, a new reconfigurable modular sensornet platform that enables real-time processing on multiple heterogeneous processors. At the heart of the mPlatform is a scalable high- performance communication bus connecting the different modules of a node, allowing time-critical data to be shared without delay and supporting reconfigurability at the hardware level. Furthermore, the bus allows...
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