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Due to gold plays an important role in maintain value, investment and national economic stability , therefore, forecasting the trend of gold price exactly is undoubtedly important. In this paper, author firstly uses GM (1, 1) model to simulate and predict the international gold price. On the basis of the method, using Markov chain to divide and predict the relative error of GM (1, 1) model and amending...
Multihop is the main communication style for wireless sensor networks. MAC protocol has great impact on performance of network. CSMA-CA's backoff algorithm specification in the IEEE 802.15.4 standard cannot adapt to dynamic network and multihop communication. This paper proposes a strategy that relays data should have priority. This strategy guarantees that remote node's packets are transmitted reliably...
We propose a unifying framework for fully automated inhomogeneity correction and partial volume (PV) segmentation of multi-spectral brain magnetic resonance (MR) images. The MR data is modeled as a stochastic process with an inherent effect of smoothly varying intensity or bias field. Unlike the conventional hard segmentation methods with a unique label for each voxel, a new PV model is developed...
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