Search For:

Displaying 1-4 out of 4 total
Autonomous Navigation of Spacecraft Constellation with Decentralized Unscented Information Filter
Found in: Instrumentation, Measurement, Computer, Communication and Control, International Conference on
By Heng Shi,Shijie Xu
Issue Date:October 2011
pp. 958-961
Potential application of inter-satellite links and X-ray pulsars on spacecraft constellation is illustrated based on distributed observation and the decentralized unscented information filter. X-ray pulsar time of arrival observation and inter-satellite ps...
Selection Policy of Rescue Servers Based on Workload Characterization of Flash Crowd
Found in: Semantics, Knowledge and Grid, International Conference on
By Chi-Hung Chi, Shijie Xu, FengLin Li, Kwok-Yan Lam
Issue Date:November 2010
pp. 293-296
Flash crowd has generally been agreed to be one of the main threats to the availability of web services, and application replication is a promising approach to address such problem. In this paper, we first model the workload of flash crowds according to th...
Selection Strategy of Rescue Servers Under Hot-Spot Congestion
Found in: Internet and Web Applications and Services, International Conference on
By Shijie Xu, Chi-Hung Chi, Cheng Qian, Chen Ding
Issue Date:May 2009
pp. 468-473
In this paper, we investigate selection strategies for rescue servers in a fully collaborative in which heterogeneous systems share spare resource to address hotspot problems experienced by individual members. Different from content replication, delays due...
Service Selection Model Based on QoS Reference Vector
Found in: Services, IEEE Congress on
By BangYu Wu, Chi-Hung Chi, Shijie Xu
Issue Date:July 2007
pp. 270-277
In SOA, one challenging problem is the QoS evaluation for the newly composed service. Most existing work on service composition focuses mainly on the static QoS behavior of individual components. Many other factors such as execution profile (e.g. service t...