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Peer-to-peer (P2P) Grid Computing has gained its popularity in many large scale distributed applications. Within such an environment, trust management is a complex and difficult task since the Grid harnesses a large variety of geographically distributed resources in virtual organizations (VOs) across multiple domains. This paper proposes a reputation(More)
As the subscriber number of 3G cellular network escalates, the era of 3G has arrived. Due to the specific network architecture and features, 3G wireless network become susceptible target of new Denial-of-Service (DoS) attacks, such as paging attack and signaling attack via (Radio Access Bearer) RAB establishment/release. In this paper, we introduce a(More)
Power consumption and battery life constrain the developments of the mobile platforms. Among the mobile applications, games are the most demanding applications in terms of both computational cost and consumed energy. The power consumption spent on GPU to accelerate the rendering speed keeps increasing rapidly. Most of the GPU power saving techniques using(More)
The last-level cache (LLC) mitigates the long latencies of memory access in today's chip multi-core processor (CMP). The promotion policy in the LLC largely affects cache efficiency, while an inappropriate promotion policy may lead useless blocks to remain in the cache longer than necessary, in turn result into inefficiency. Currently state-of-the-art(More)
Machine Learning (ML) techniques are pervasive tools in various emerging commercial applications, but have to be accommodated by powerful computer systems to process very large data. Although general-purpose CPUs and GPUs have provided straightforward solutions, their energy-efficiencies are limited due to their excessive supports for flexibility. Hardware(More)
Flash Memory is a desirable candidate for main memory replacement in embedded systems due to its low leakage power consumption, higher density and non-volatility characteristics. There are two challenges in applying flash memory as main memory. First, the write operations are much slower than read operations. Second, the lifetime of flash memory depends on(More)
NAND flash memory has been widely adopted in embedded systems as secondary storage. Yet the further development of flash memory strongly hinges on the tackling of its inherent implausible characteristics, including read and write speed asymmetry, inability of in-place update, and performance harmful erase operations. While Write Buffer Cache (WBC) has been(More)