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First of all, the reverberation statistical theory based on the unit-scatterer model is stated in this paper, and the interface reverberation model is established based on it. In the process of modeling, a new approach that the number of contributive scatterers changed with time is proposed, and the calculation method is simplified when using convolution of signal and scatterring characteristic function...
Cahe plays an important role in the process of designing a microprocessor. In this paper, we propose an Adapative Group Based Replace Policy for high performance cache design. The basic idea is to insert the new incoming block to one of a group of blocks in the set. Group is organized by the blocks that have close addresses. Using group mechanism, our policy prevents a block to be evicted by a cache...
Multiple-extremum issue including the well-known ??singularity?? problem is one of the major defects in kernel-based object tracking. This paper studies this important problem and presents a novel approach called section-based tracking (SBT) that is based on the section information provided by the division of the object's weight image. This approach serves to eliminate fake extremal points and make...
As the advanced form of sensor networks, Audio/video sensor networks can provide rich multimedia information, which doubtlessly benefit a plethora of data hungry applications such as environment monitoring, health care, emergency response, and video security. In this paper, we first describe a cluster-based architecture of sensor networks, which provides differentiated service. Then, we propose an...
This paper proposes a system applying a pyramid neural network for classifying the hepatic parenchymal diseases in ultrasonic B-scan texture. The conventional multilayer neural network emphasizing on the data carried by the last hidden layer has the drawback of not fully utilizing the information carried by the input data. A pyramid network can solve the problem successfully. To solve the common problem...
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