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BGP measurement is important for monitoring and understanding the Internet anomalies. Most of the previous works on BGP measurement rely on aggregated statistics from BGP monitors, e.g., total updates. However, BGP events may have quite limited visibility. Therefore, merely investigating aggregated data may lead to misunderstanding Internet instability, e.g., overestimating the impact of monitor-local...
The severe rodent damage in Gurbantunggut desert forest may result in eco-environment destruction and desertification acceleration. However, little is known concerning the level of rodent hazard, spatial distribution and regularity of outbreak. This paper approached to use high-resolution imagery (TDOM and DEM) provided by Unmanned Aerial Vehicles (UAV) for rodent pests monitoring in desert forest...
We present in this paper our development of a cyber physical sensing platform for monitoring the structural tension of large bridge cables using MEMS vibration sensors and proprietary wireless technology. In order to implement the online tension analysis of the bridge cables, we developed an improved technology for the general identification of cable tension using the Gauss-Newton method to determine...
Measuring the instability of IP prefixes in BGP is critical for network operation and management. In particular, identifying and investigating the most active prefixes assist in detecting, analyzing, and understanding network problems. The traditional metric to assess the activeness of a prefix is the quantity of BGP update. However, this metric may be strongly affected by monitor-local events: the...
Anomalous BGP events can deteriorate Internet performance and connectivity thus have always been a research topic. However, most measurement works in this realm are prone to monitor-local events, namely, the events local to only few BGP monitors. Besides, events that are widely observed can also have negligible impact, e.g., prefix-local events. In contrast, a Large-scale BGP Event (LBE) makes a large...
Ice monitoring on the overhead transmission lines is very important to insure the power grid safe during the ice disaster. To solve the electromagnetic interference, a tension sensor based on Fiber Bragg Grating is developed to measure the tension of the power transmission line. The sensitivity of the sensor is 0.2286 pm/N calibrated with a test machine. The relative error of the load and sag, measured...
The plasma sporicidal effects on Bacillus atrophaeus spores were studied using a low-temperature atmospheric plasma brush in terms of the following conditions: 1) plasma conditions; 2) plasma gas compositions; 3) plasma exposure time; and 4) the types of supporting media. It was found that the plasma brush with O_2 addition was very effective in inactivating the Bacillus spores. With 0.33, 0.7, and...
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