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Work-stealing plays a key role in promoting load balancing for such applications that need continuous dynamic load balancing. However, the performance of current work-stealing algorithms is usually very sensitive to the choice of steal granularities since these algorithms typically adopt a fixed steal granularity. On the other hand, these work-stealing algorithms usually obtain poor performance for...
The multi-tier architecture is prevalently adopted by cloud applications, such as the three-tier web application. It is highly desirable for both tenants and providers to provide virtual networks in an efficient and elastic way, where tenant applications can automatically scale in or out with varying workloads and providers can accommodate as many requests as possible in the underlying network. However,...
In modern electromagnetic environment, the complex jamming and hostile reconnaissance severely threaten the communication reliability and security. To guarantee the performance of frequency hopping (FH) communication, one FH sequence with adaptive frequency slot number is proposed in this paper. The frequency slot number of this sequence could be adaptively changed with the channel condition by employing...
There is a growing trend for service providers (SPs) to migrate their multi-tier applications from local clusters to public cloud networks. In the cloud environment, it is a great concern of SPs to improve the availability of their virtual networks, in addition to guarantees of their virtual resource requirements, such as VMs and bandwidth. However, meeting these requirements results in an inefficient...
Spectrum sensing is the precondition of implementation of cognitive radio. Motivated by the fact that eigenvalue detection algorithms are based on eigenvalue decomposition over the covariance matrix, we propose an efficient spectrum sensing algorithm based on Cholesky decomposition over that matrix. Using eigenvalues of the matrix which is obtained by Cholesky decomposition over finite covariance...
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