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Understanding how users in online social networks (OSNs) get exposed to different information and how they adopt such information is essential for OSN management and for understanding information diffusion. In particular, recent studies have demonstrated the importance of studying users' information exposure in characterizing information overload and attention competition in OSNs. However, most existing...
The rapid development of online social networks (OSN) renders them a powerful tool for information diffusion. Understanding the temporal behavior of OSN users is critical in studying the diffusion process. While there is much work on building various diffusion models to characterize the information propagation process, the diversity of OSN users' behavior patterns is seldom addressed in these models...
Ultra-short pulse generator based on Marx circuit, whose switch is avalanche transistor, could generate very short pulse with high peak voltage. The ultra-fast rising-edge of the pulse is mainly determined by transistor's avalanche effect. On the other hand, the avalanche effect have negative influence on the falling-edge, which lead to the waveform unacceptable for signal processing. In this paper,...
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