Songqiao Chen

Learn More
à Xv‡uà ‡urà …hƒvqà hq‰hpr†Ã vÃ €‚ivyrà p‚€ƒˆ‡vtà ‡rpu‚y‚t’à ‡ur…rà v†Ã hÃ vp…rh†vtà qr€hqà s‚…à processing real-time transactions in a mobile environment. This paper studies concurrency control problem in mobile distributed real-time database systems (MDRTDBS). Based on the High Priority Two Phase Locking (HP-2PL) scheme, we propose a distributed(More)
ÐWe study hypercube networks with a very large number of faulty nodes. A simple and natural condition, the local subcube-connectivity, is identified under which hypercube networks with a very large number of faulty nodes still remain connected. The condition of local subcube-connectivity can be detected and maintained in a distributed manner based on(More)
Multiprocessor job scheduling problem has become increasingly interesting, for both theoretical study and practical applications. Theoretical study of the problem has made significant progress recently, which, however, seems not to imply practical algorithms for the problem, yet. Practical algorithms have been developed only for systems with three(More)
Host-based rerouting mechanism is a routing scheme that stores and forwards data in application layer. With this, users can communicate in a indirect way. Thus, identity information such as IP addresses can be effectively hidden against eavesdropper. In anonymous communication systems, such as Mixes, Onion Routing, and Crowds, this mechanism is adopted to(More)