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This paper proposes a modeling scheme for dam-breach of Tangjiashan Quake Lake. Firstly, a water level forecasting model based on weather forecast and delayed effect of rainwater is built. Secondly, a dam-breach model based on OE2ED methodology is developed including several factors such as hydraulic, sediment transport, geometry characteristic and reservoir capacity as well as flow. Finally, a simplified...
In this article, we propose an improvement on the universally composable password-based key exchange protocol. We replace one-time signature with message authentication codes which reduce the bandwidth consumption. For typical security parameters our improvement saves as much as 12 Kbytes of bandwidth in a protocol execution. Our protocol can be efficiently instantiated using either the DDH or the...
In this paper, skin region segmentation is performed using a new color space and a level set method based on Mumford-Shah model. The fundamental idea is to divide the whole problem into two main steps according to the hierarchy of image information. We first perform a rough skin classification pixel-wise using a color coordinate deduced by principal component analysis (PCA) technique. The next step...
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