Address

Department of Computer Science
Cornell University
5162 Upson Hall
Ithaca, NY 14853-7501, USA
cxzheng [at] cs [dot] cornell [dot] edu
http://www.cs.cornell.edu/~cxzheng/

Research Interests

Computer Animation
Physically based simulation and sound synthesis for natural phenomena

Animation Control
Multi-objective optimization control

Applied Math
Time-dependent optimization control, Hamilton-Jacobi PDEs

Education

Cornell University, Ithaca, 2006-Present
Ph.D. Candidate in Computer Science
Thesis Committee: Doug L. James, John Guckenheimer, Charles F. Van Loan, Steve Marschner, and Dexter Kozen

Shanghai Jiaotong University, Shanghai, China, 2001-2005
B.Eng. in Comptuer Science

Research Experience

Graduate Research
Graphics: Physically based simulation and sound rendering (Ph.D. Thesis)
Applied Math: Fast numerical methods for time-dependent Hamilton-Jacobi PDEs
Robotics: Learn grasping and placing strategies in personal robotics
Networking: Distributed detection of IP prefix hijacks

UC Berkeley. Short-term visiting scholar, Sep, 2005.
Extension of distributed hash table in peer-to-peer networks and its applications

Microsoft Research Asia. Visiting student/scholar, 2004-2006.
Internet multi-media streaming in peer-to-peer networks

Publications

Graphics

• Changxi Zheng and Doug L. James. Towward High-Quality Modal Contact Sound. ACM Transaction on Graphics (SIGGRAPH 2011), 30(4), August, 2011
• Changxi Zheng and Doug L. James. Rigid-Body Fracture Sound with Precomputed Soundbanks. ACM Transaction on Graphics (SIGGRAPH 2010), 29(3), July, 2010
• Changxi Zheng and Doug L. James. Harmonic Fluids. ACM Transaction on Graphics (SIGGRAPH 2009), 28(3), August, 2009

Animations

• Changxi Zheng and Doug L. James. Harmonic Fluid Sound Synthesis. Computer Animation Festival, SIGGRAPH 2009

Networking

• Changxi Zheng, Lusheng Ji, Dan Pei, Jia Wang and Paul Francis, A Light-Weight Distributed Scheme for Detecting IP Prefix Hijacks in Real-time. Proc. of ACM SIGCOMM, Kyoto, Japan, August, 2007

Older papers & technical reports

• Guobin Shen, Changxi Zheng, Wei Pu and Shipeng Li, Distributed Segment Tree: A Unified Architecture to Support Range Query and Cover Query. Technical Report MSR-TR-2007-30, 2007
• Changxi Zheng,  Guobin Shen, Shipeng Li, and Scott Shenker, Distributed Segment Tree: Support of Range Query and Cover Query over DHT. The 5th International Workshop on Peer-to-Peer Systems (IPTPS) Santa Barbara, US, February, 2006
• Ke Liang, Zaoyang Gong, Changxi Zheng, and Guobin Shen, MOVIF: A Lower Power Consumption Live Video Multicasting Framework over Ad-hoc Networks with Terminal Collaboration . International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Hong Kong, December, 2005
• Changxi Zheng, Guobin Shen, and Shipeng Li, Distributed Prefetching Scheme for Random Seek Support in Peer-to-Peer Streaming Applications. Workshop on Advances in Peer-to-Peer Multimedia Streaming, ACM Multimedia 2005, Singapore, November, 2005
• Changxi Zheng, Guobin Shen, and Shipeng Li, Segment Tree Based Control Plane Protocol for Peer-to-Peer On-Demand Streaming Service Discovery. Proc. of Visual Communication and Image Processing (VCIP), Beijing, China, July, 2005
• Changxi Zheng, Guobin Shen, Shipeng Li, Qianni Deng, Joint Sender/Receiver Optimization Algorithm for Multi-Path Video Streaming Using High Rate Erasure Resilient Code. Proceeding of IEEE International Conference on Multimedia and Expo (ICME), Amsterdam, Netherlands, July, 2005

Patents
Two U.S. patents at Microsoft
One U.S. patent at AT&T

Selected Professional Activities

Reviewer for ACM SIGGRAPH 2011, Eurographics 2011, ACM/IEEE Transactions on Computer Systems

Member of ACM, ACM SIGGRAPH

Teaching

CS5643: Physically Based Animation for Computer Graphics. Teaching Assistant, Spring 2009

CS412/413: Introduction to Compilers. Teaching Assistant, Spring 2007

CS211: Computers and Programming. Teaching Assistant, Fall 2006

Selected Press Coverage

"Perfecting synthetic sounds for animated worlds"
New Scientist, July 26, 2010

"Researchers create sounds of animated things breaking"
Cornell Chronicle, July 14, 2010

"Computer-generated sound effects make a splash"
New Scientist, June 9, 2009

"Computer graphics researchers simulate the sounds of water and other liquids"
Science Daily, June 4, 2009

"Computer graphics researchers simulate the sounds of water and other liquids"
Cornell Chronicle, June 1, 2009