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System recovery is described to characterize the ability that a firewall under testing recovers from an overload condition. In our paper, we present an approach to test the system recovery base on the traffic whose frame size obeys a specific distribution and figure out the system recovery time and the variance of the system recovery time. We implement the testing base on stress condition with overload...
This article presents a new deriving method of a simple formula for all kinds of one-dimensional collision. The formula and the method are easy to be learned and remembered for students than traditional equations for one-dimensional collision. The article presents five different ways to deal with the same question, and suggests that teaching students different ways to deal with the same question is...
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