Education	University of California at Santa Cruz, 1994 - 1999 PhD in Computer Engineering, June, 1999. Dissertation: Secure Hierarchical Multicast Routing and Multicast Internet Anonymity Masters in Computer Engineering, June 1996 Master's Thesis: Ordered Core Based Trees Advisor: Dr. J.J. Garcia-Luna-Aceves University of Maryland, 1993-1994 Graduate level course work in Computer Science University of Virginia, 1984-1989  Bachelor of Science, Electrical Engineering
Research  Experience	Research Assistant, University of California at Santa Cruz, 1995 - June 1999  Conducted research into shared-tree multicast routing protocols with my advisor, Dr. J.J. Garcia-Luna-Aceves. Developed the Ordered Core Based Tree protocol (OCBT), which corrected deficiencies in the Core Based Tree protocol while extending it to use multiple cores and to be the first shared-tree protocol able to tolerate network partitions. Currently implementing a GateD version of OCBT. Proposed HIP, a hierarchical multicast routing protocol that allows heterogenous domains to communicate using OCBT. Created secure versions of both OCBT and HIP for Keyed-HIP (KHIP), which limits access to the multicast tree to authorized members. SEED Summer Intern, Hewlett-Packard Labs, June 1996 - September 1996 Conducted firewall performance analysis for the BIDS model of service. Developed tools to analyze and re-create network traffic based on SOCKS log traces from actual installations. Conducted performance and scalability analysis of the Firewall-1 firewall running under BIDS style traffic loads. Received highest rating of "exceptional" for work performed as summer student.
Teaching Experience	Teaching Assistant, University of California at Santa Cruz Technical Writing, Winter quarter, 1997 Invited to work as Teaching Assistant for technical writing classes for computer majors. Responsible for assisting individual students with writing assignments, editing and grading student work.  Introduction to Computer Programming for Non-majors, 1994-1995 Teaching Assistant for beginning programming courses in Pascal and C. Responsible for conducting numerous lab sessions, weekly discussion sections, grading, and individual tutoring of students. Received highest rating of "excellent" from 76% of students in section. Recommended for nomination as Teaching Assistant of the Year by supervisor. Instructor, Central Texas College, 1992-1993 Instructed fourteen distance-learning college level courses covering a variety of subjects in the Arts and Sciences for U.S. Army soldiers stationed in the Sinai. Responsible for writing and delivering supplemental lectures to accompany video series, and for writing, administering and grading quizzes and exams. Rated as "excellent" on student evaluations.
Professional Experience	Security Coordinator, University of California at Santa Cruz, 1997 - 1998 Responsible for conducting vulnerability testing, for monitoring of campus networks, and for response to security breaches. Conducted short and long-term planning for campus security systems, including investigation and testing of firewall and one-time password systems, and testing of campus certificate server system. Infantry Platoon Leader, 101st Airborne Division, U.S. Army, 1990 - 1993  Platoon Leader of Rifle and Anti-Armor Infantry Platoons. Responsible for leadership of a 40 soldier platoon during tactical employment; planning and execution of safe, effective training; and accountability and maintenance of over one million dollars of equipment. Led platoon during six month deployment to the Sinai as part of the MFO peace-keeping force. During deployment served as MFO liaison officer between Egypt and Israel and received Army Achievement medal for exceptional performance in that position.  Redistricting Technician, National Republican Congressional Committee, 1989 - 1990 Worked on project to develop and distribute a computer-aided redistricting system for use after the 1990 Census. Worked to develop means of matching census tract lines with precinct lines in test areas. Wrote software to manipulate TIGER files of census information for use with system.
Computer  Experience	Extensive programming experience in C, C++ and Pascal, and with CPT and Drama network simulation packages. Familiar with Java, Java script and C-shell programming. Experienced with many operating system environments, including UNIX (Solaris, OSF, SunOS, HPUX; have administered FreeBSD and Linux systems), Windows NT, MacOS, Windows and BeOS. Familiar with many system security, monitoring, and intrusion tools.
Publications	C. Shields, Secure, Hierarchical Multicast Routing and Multicast Internet Anonymity, Ph.D. Dissertation, University of California, Santa Cruz, C.A., June 1999. C. Shields and J.J. Garcia-Luna-Aceves, "KHIP - A Scalable, Efficient Protocol for Secure Multicast Routing". To appear in Proceedings of ACM Sigcomm'99. C. Shields and J.J. Garcia-Luna-Aceves, "HIP - A Protocol for Hierarchical Multicast Routing". To appear in Computer Communications. C. Shields and J.J. Garcia-Luna-Aceves, "OCBT - A Protocol for Loop-Free Shared Multicast Trees". Submitted for publication. C. Shields and J.J. Garcia-Luna-Aceves,"The HIP Protocol for Hierarchical Multicast Routing", In Proceedings of the Seventeenth Annual ACM Symposium on Principles of Distributed Computing, Puerto Vallarta, Mexico, June 1998.  C. Shields and J.J. Garcia-Luna-Aceves, "The Ordered Core Based Tree Protocol", In Proceedings of the IEEE INFOCOM97, Kobe, Japan, April 1997.  C. Shields, Ordered Core Based Trees. Masters Thesis. University of California, Santa Cruz C.A., June 1995.
Presentations	"Ordered Core Based Trees", USC Information Sciences Institute, Marina Del Ray, California, December, 1997.  "Ordered Core Based Trees", Inter-Domain Multicast Routing, Internet Engineering Task Force, San Jose, California, December, 1996.
Professional Activities	Reviewer for a number of conference proceedings and for Transactions on Networking. Member ACM and IEEE. Treasurer of UCSC Graduate Student Association. Created budget and managed finances through university administration. Sat on University committees dealing with campus computing and computer security issues.
Personal	U.S. Citizen.  Long term overseas residence in Spain, Mexico, and Indonesia. Extensive travel throughout Israel, Europe, Central America and Asia. Fair Spanish. Secret Security Clearance. American Canoe Association certified Whitewater Kayak Instructor. Black Belt, Myo Sim Karate. Hobbies include kayaking, mountain biking, snowboarding and volleyball.