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With the increasingly widespread application of computer network, it has become a critical task to detect anomalous behaviors in the field of network security. In this paper we develop an entropy-based statistical approach that determines and reports entropy contents for variables in the Management Information Base. The change of the entropy value indicates that a massive network event or an anomaly...
Wireless network access from moving vehicles can be challenged by many factors such as connection opportunities, mobility, handshake phase, and data sizes, etc. The handshake time and transmission rate can be influenced differently in vehicle-to-roadside networks than a static wireless LAN access. The radio signal strength changes and Doppler shift occur when the vehicle is moving. Switching among...
Recent advances in Internet and WWW techniques motivate desire for systems with interactive 3D graphics on the Web, which draws attention and effectively assist human understanding with spatial intuitiveness and interactivity. Web-based application with virtual environment walkthrough capability is expected to have a profound impact to the travel based applications, such as virtual e-commerce, online...
Memory detection computation, data intensive applications, demands large computing resources. Mainframes are usually used to accelerate its computation. However, this solution seems to be costly. In this paper, we present an alternative approach of using desktop grid, using PC computers' idle CPU time, to realize parallel processing of memory detection. In order to demonstrate the effectiveness of...
Software aging refers to the phenomenon that the performance degradation, increasing failure rate or massive resource usage demonstrated in long-running software systems such as web servers. It was reported that software aging has a significant relationship with resource usage. To study the software aging phenomenon in web servers, we built an experimental platform with a server and multiple clients...
Software aging refers to the phenomenon that long-running software shows signs of increasing failing rate, overmuch resource usage, and performance degradation. Software rejuvenation is a proactive approach to dealing with this problem. However, commonly used rejuvenation methods involve a relatively larger overhead. An alternative is to reduce the severity of software aging by online adjusting the...
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