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Racetrack memory (RM, also known as DWM (domain wall memory)) is an emerging memory technology that has many advantages such as low power, high density, and low access latency. Recent studies have shown that it is promising to architect RM as last level cache (LLC). Given that a RM track consists of m domains (for storing m bits data) and n access heads (1≤n<m), one RM access often requires multiple...
This research aims at providing a quantitative benefits assessment of enhancing the visibility in global supply chains. In particular, we describe how we model physical and information processes in a global maritime supply chain, and how delays propagate under different information scenarios. We describe how the model logic is validated in the context of a large scale project in which amongst others,...
In this paper, the Gray-Wyner network with a limited-rate helper is investigated. The helper sends a common message to the encoder and the decoders. We characterize the complete rate region. Successive refinement with a limited-rate helper is treated as a special case. The rate region for a Gaussian source with squared error distortions is explicitly calculated.
Virtual reality application such as second life and other multi-player game is a set of special distributed interactive applications (DIAs), because a sender node forwards data to receivers due to their respective priorities. In general application level protocol is adopted to multicast: the significance-based directed minimum spanning tree was designed for these DIAs. In this paper we propose a novel...
In this paper, we study the zero-error capacity for finite state channel with feedback when channel state information is known to both the transmitter and the receiver. We prove that the zero-error capacity in this case can be obtained through the solution of a dynamic programming problem. Exact answers are also given for certain cases.
Different from the traditional wireless networks, in wireless sensor networks(WSNs), power consumption is a critical aspect, because current nodes are always supported by constrainedenergy battery. A particular challenge in maintaining extended battery lifetime lies in achieving communications with low power. For better understanding of the design trade offs of WSNs, a more accurate power consumption...
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