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Performance prediction is one of the most important research topics of service-oriented systems. To investigate the performance of composite services in queuing condition, this paper introduces a queuing-network-based model. Analytical methods are introduced to evaluate the queue-length, wait-time and completion-duration. The case study (especially the case of airline ticket booking application) shows...
Due to the complex illumination conditions under foggy weather, it is essential to perform an image enhancement stage to reverse the contrast-degraded. We propose a new traffic image enhancement method based on the vanishing point detection. The base principle of the method is atmosphere scattering model. Vanishing points are used to estimate the depth of field. The key feature of vanishing points...
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