• Formulated and investigated design problems for extensible networks
• Implemented a Java-based network design tool (the Extensible Network Planner) for extensible networks
• Proposed algorithms for routing application traffic in service-oriented extensible networks
• Performed simulation for evaluating routing algorithms and resource usage in session-oriented networks
• Developed an on-demand code distribution server (in C/C++) for programmable routers

• Developed an algorithm for efficiently drawing graph diagrams for various purposes
• Implemented the straight line drawing of tree graphs for the Graph Drawing Server

• Developed and demonstrated MMB, scalable multimedia messaging box for mobile and wireline Internet
• Investigated server placement problem for session-oriented applications

• Studied image data processing and image rendering for orthotic and prosthetic limbs
• Developed software interface for designing prosthetic aids

•  Designed factory database system and user interface

• Programming Languages: Experienced in C, C++, Java, Perl, Pascal, and CGI. Moderately experienced in Lisp, Scheme, and Fortran.
• Operating Systems: Experienced in Sun OS, Linux, NetBSD, Windows, and DOS.
• Software tools: MS word, MS Powerpoint, MS Excel, LaTex, and Visio

• Choi, S., Turner, J., "Constraint-based Design of Extensible Networks," submitted to Computer Networks, August 2003
  
• Choi, S., Turner, J., Wolf, T., "Configuring Sessions in Programmable Networks," Computer Networks, Vol. 41, No. 2, pp. 269-284, February 2003
• Decasper, D. et al., "A Scalable High-Performance Active Network Node," IEEE Network, Vol. 13, No. 1, January/February 1999

• Choi, S., Turner, J., "Configuring Sessions in Programmable Networks with Capacity Constraints," Proceedings of IEEE ICC, May 2003
• Choi, S., Shavitt, Y, "Proxy Location Problems and their Generalizations", International Workshop on New Advances of Web Server and Proxy Technologies (in conjunction with IEEE ICDCS), May 2003,
• Wolf, T., Choi, S, "Aggregated Hierarchical Multicast for Active Networks," Proceedings of IEEE MILCOM, October 2001
• Choi, S., Turner, J., Wolf, T., "Configuring Sessions in Programmable Networks," Proceedings of IEEE INFOCOM, April 2001
• Keller, R., et al., "An Active Router Architecture for Multicast Video Distribution," Proceedings of IEEE INFOCOM, March 2000
• Turner J., et al., "Design of a Flexible Open Platform for High Performance Active Networks," Proceedings of the Allerton Conference, October, 1999

• Choi, S., Turner, J., "Constraint-based Design of Extensible Networks," Technical Report, WUCSE-2003-44
• Choi, S., "Resource Configuration and Network Design in Programmable Networks," WUCS-2002-16
• Choi, S., Shavitt, Y., "Placing Servers for Session-Oriented Services," Technical Report, WUCS-2001-41
• Choi, S., "Plugin Management," Technical Report WUCS-2000-04

Presentations

• "Configuring Sessions in Programmable Networks with Capacity Constraints," IEEE ICC, Anchorage, Alaska, May 2003
• "Configuring Sessions in Programmable Networks," Opensig 2002, University of Kentucky, October 2002
• "Configuring Sessions in Programmable Networks," IEEE INFOCOM, Anchorage, Alaska, April 2001

• "Constraint-based design of extensible networks," IEEE ICNP, November 2003

• Student Travel Award , International Working Conference on Active Networks, 2001
• Student Travel Award, ACM SIGCOMM, 2000
• Scholarship for undergraduate studies, Korea Foundation for Advanced Studies, 1992-1994