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In order to simplify the system structure and improve the control precision, a static two-axis model for brushless doubly fed induction machine is presented in this paper. The two subsystems of the model are respectively built on αβ reference frames of power winding and control winding. On this basis, a direct torque control strategy has been proposed. The flux and torque is estimated on the two static...
We consider joint congestion control and wireless link-scheduling design for mobile TCP applications. Adopting queueing delay as the congestion measure, we show that the optimal TCP congestion control and link scheduling scheme amounts to window-control oriented implicit primal-dual solvers for underlying network utility maximization. Based on this idea, we develop readily deployable, scalable yet...
We proposed a new approach for target value sequencing problem using grey analytic network process(ANP). Target value evaluation index system was constructed located at artillery battlefield, the index weight was decided based on analytic network process, the evaluated grey league and the general grey evaluated weight vector were decided based on grey system theory. The case proves the reliability...
The principal goal of DNS usage mining is the discovery and analysis of patterns in the query behavior of DNS users. In this paper, we develop a unified framework for DNS usage mining based on Clustering analysis of co-occurrence data derived from DNS server query data. Through transforming the raw query data into co-occurrence matrix, user transaction clustering can be applied to discover the user...
Distributed storage systems store a substantial amount of data and maintain data integrity by storing redundancy in a large number of storage nodes. When storage nodes fail, the lost data should be regenerated on replacement nodes. Regenerating codes minimize the volume of network traffic brought by the regeneration process. However, regenerating codes consume less traffic by requiring a larger number...
In network coding applications over packet networks, the intermediate nodes have to buffer incoming packets for encoding as they arrive asynchronously. In common buffering models, all of the buffered packets within current generation are not flushed until the generation expires, which causes unnecessary buffering overhead. In this paper, we show that some of the buffered packets can be released as...
Distributed storage systems, built on peer-to-peer networks, can provide large-scale data storage and high data reliability by redundant schemes, such as replica, erasure codes and linear network coding. Redundant data may get lost due to the instability of distributed systems, such as permanent node departures, hardware failures, and accidental deletions. In order to maintain data availability, it...
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