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Electromagnetic properties of hydroxylapatite and oxalate powders are characterized over 1.7–2.6 GHz using a WR-430 rectangular waveguide. The effective dielectric constant and loss tangent of both compounds are derived from the measured S parameters. Effective medium theory is then applied to extract the intrinsic property of each compound. The extracted intrinsic dielectric constants are 3.37 and...
The host connection degree distribution (HCDD) is an important metric for network security monitoring. However, it is difficult to accurately obtain the HCDD in real time for high-speed links with a massive amount of traffic data. In this paper, we propose a new sketch method to build a probabilistic traffic summary of a host's flows using a uniform Flajolet-Martin sketch combined with a small bitmap...
With the high-speed development of WEB 2.0, the number of web applications continues to grow, making users' behavior become increasingly complex and difficult to monitor. In this paper, we develop a new method for user's behavior characteristics visualization and special user identification. Firstly, we divide all the web applications into 12 kinds and each kind includes several specific applications...
In recent years, a novel BitTorrent (BT) technology, Private Tracker (PT), has received extensive attentions in academia. Due to its huge amount of traffic volumes and population, it is essential to understand the characteristics for system management. In this paper, by using the data crawled from a number of well-known PT sites in China, we present an in-depth measurement and analysis on the PT system,...
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