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In the cognitive radios (CR), there is a security issue-spectrum sensing data falsification attacks (SSDF) in the process of cooperation. Some malicious users (MUs) who unwilling to cooperate friendly with other users may launch SSDF attacks by falsifying their local sensing information sent to fusion center (FC) intentionally, result in interfering with the detection and threat the CR networks. In...
“The bullwhip effect” have serious influence on auto sales chain property and performance. Based on System Dynamics theory, this paper built a model of multi-level auto sales supply chain, made a modeling and simulation research on the bullwhip effect to a scalable multi-agent linear supply chain system. Quantitative analysis on the impact of lead time to the bullwhip effect, and gave corresponding...
The IP Multimedia Subsystem (IMS) defined by the 3rd Generation Partnership Project (3GPP) and 3GPP2 provides a platform for the provision of multimedia services with quality of service (QoS). In addition, this service architecture allows third-party vendors to create advanced multimedia and multisession services across wireless and wireline network access. The Session Initiation Protocol (SIP) supports...
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