Rui Zhang

Learn More
Location-based routing (LBR) is one of the most widely used routing strategies in large-scale wireless sensor networks. With LBR, small, cheap and resource-constrained nodes can perform the routing function without the need of complex computations and large amounts of memory space. Further, nodes do not need to send energy consuming periodic advertisements(More)
Location-based routing (LBR) is one of the most widely used routing strategies in large-scale wireless sensor networks (WSN). With LBR, small, cheap and resource constrained nodes can perform the routing function without the need of complex computations and large amount of memory space. Further, the nodes don't need to incur in energy consuming periodic(More)
The cloud storage services is a technology in cloud computing, which provides the online storage services for data owners over the Internet. It enables data owners to remotely store their data into a cloud so that to enjoy scalable services pay-on-demand. However, allowing the cloud servers to take care of the confidential data, which may bring many(More)
The complexity of today's IT systems makes capturing the behaviors of these environments increasingly difficult, and calls for automated modeling solutions. We present an approach to generating a probabilistic (Bayesian) network for modeling IT service availability on information reported in system logfiles, including service desk problem tickets,(More)
Constructing a scientific and effective bank risk forewarning model is an important measure to effectively guard against and defuse risks in commercial banks. This article constructs a bank risk forewarning model using BP neural network and principal component analysis method. Meanwhile, being aimed at that it takes a long time while processing the mass(More)
A bio-inspired image fusion algorithm in nonsubsampled contourlet transform (NSCT) domain is proposed. Two biological vision models, the visual attention mechanism (VAM) and pulse coupled neural network (PCNN), which extract image features under different scales, are employed. VAM based saliency matching degree is used in NSCT low-pass subbands fusion. This(More)
It is surprisingly hard to obtain accurate and precise measurements of the time spent executing a query, as there are many sources of variance. To understand these sources, we review relevant per-process and overall measures obtainable from the Linux kernel and introduce a structural causal model relating these measures. A thorough correlational analysis(More)
To solve the problem of searching speed of the shortest path in the electronic guide system, the binary heap of A* algorithm which combines binary heap with A* algorithm is proposed in this paper. The method stores the extended node position in the A* algorithm by binary heap, avoids traversal searching storage space, optimizes data structure of storage(More)