Java Active Extensions    The Java Active Extensions project is developing a lightweight, user-level middleware system for remote execution. I am working on this project in collaboration with Dr. Joe Pasquale. One motivation of the research is to explore the usefulness of mobile-code for improving wireless access to network services (e.g. Web content). Another motivation is for network services to dynamically distribute functionality to network points where it is needed most. A primary focus of the work is investigating system architectures for executing mobile code, including isolation and resource management. Software is available. User-level scheduling framework    We developed a framework for implementing user-level scheduling policies as a daemon process for UNIX-like operating systems. The user-level scheduler works in tandem with the kernel's fair share scheduler - allowing the kernel scheduler to make fine-grained decisions while the user-level scheduler shapes the kernel scheduler's decision space to meet the goals of the user-level policy. This works supports our Java Active Extensions architecture by providing a portable, user-level mechanism for processor resource control. We used the scheduling framework to implement ALPS, an Application-level Proportional-share Scheduler. Publications T. Newhouse and J. Pasquale, "ALPS: An Applications-Level Proportional-Share Scheduler," Proc. of the 15th IEEE International Symposium on High Performance Distributed Computing, Paris, France, (to appear) May 2006. T. Newhouse and J. Pasquale, "Java Active Extensions: Scalable Middleware for Performance-Isolated Remote Execution," Elsevier Computer Communications Journal, Vol. 28, Issue 14, pp 1680-1691, Sep 2005. (pdf) T. Newhouse and J. Pasquale, "A User-Level Scheduling Framework for Processor Resource Sharing," Proc. of the 2004 IEEE International Conference on Services Computing, Shanghai, China, Sep 2004. (pdf) T. Newhouse and J. Pasquale, "Resource-Controlled Remote Execution to Enhance Wireless Network Applications," Proc. of the 4th Workshop on Applications and Services in Wireless Networks (ASWN 2004), Boston, MA, Aug 2004. (pdf) J. Pasquale, E. Hung, T. Newhouse, J. Steinberg, and N. Ramabhadran, "Improving Wireless Access to the Internet By Extending the Client/Server Model," Proc. European Wireless Conference, Florence, Italy, Feb 2002. (pdf) T. Newhouse, "Java Active Extensions: A mobile-code mechanism for extending client resources," M.S. Dissertation, Computer Science & Engineering Dept., University of California, San Diego, Dec 2001. (pdf)