Xiaofei Xing

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BACKGROUND Parotid glands diffusion-weighted imaging (DWI) in Sjögren's syndrome patients have provided conflicting results currently. PURPOSE To determine if parotid gland DWI using a small region of interest (ROI) can provide diagnosis and assess therapeutic efficacy in Sjögren's syndrome. MATERIAL AND METHODS Twenty-three women with Sjögren's(More)
Sensing coverage and network connectivity are two fundamental issues in wireless sensor networks (WSNs). Due to resource constraints of sensor nodes, it may not be possible, or necessary, to provide full coverage and/or connectivity in WSNs. Under a certain coverage and connectivity requirement, the node deployment strategy becomes a challenging issue in(More)
This paper addresses the polytype target coverage problem for heterogeneous wireless sensor networks (HWSNs) with clustered configurations. This problem is formulated as an integer programming (IP) problem for maximizing the whole lifetime of HWSNs. We present an energy-efficient target coverage algorithm (ETCA) to solve this problem and balance the energy(More)
Wireless sensor networks (WSNs) are being deployed for structural health monitoring (SHM) applications at an increasing rate. A WSN is often organized into groups or clusters for distributed monitoring purposes. However, we discover that the dependability (in terms of the monitoring ability/quality and low false alarm rate) is greatly affected by such(More)
Mass data are usually collected and processed in large and ultra large-scale wireless sensor networks, and this will greatly affect the life of intelligent sensors and the performance of network. In this paper, we propose an approach to reduce the collected data from wireless sensor networks by using compressed sensing method. Compressed sensing is a new(More)