The work performed in the Laboratory of Networking and Information Systems is supported in part by the National Science Foundation under grant "CAREER: Practical Data Synchronization: Minimizing Communication" (CCR-0133521) and grant "CAREER: Quality of Service Engineering with Multiple Time-Scale Traffic" (ANI-0132802). This support is gratefully acknowledged.

Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.