CitySee, Invited Talk, Department of Civil Engineering, University of Illinois at Urbana Champaign (UIUC), Chicago, Sep 16, 2011.

GreenOrbs, Keynote Speech, The 7th IEEE International Conference on Distributed Computing in Sensor Systems, Barcelona, Spain, June 28, 2011.

GreenOrbs: Lessons Learned from Extremely Large Scale Sensor Network Deployment, Keynote Speech, The IEEE International Conference on Network Computing and Information Security (NCIS’11), Guilin, China, May 15, 2011.

Pervasive Computing and Body Networks, Keynote Speech, The 9th Sports Information Technology Conference, China, Dec. 15, 2010.

GreenOrbs Project, Keynote Speech, International Workshop on IoT, Tokyo, Japan, Dec 2, 2010.

From WSN to IoT, Keynote Speech, The Fourth China Wireless Sensor Network Conference (CWSN 2010), ChangSha, China, Oct 29, 2010.

GreenOrbs: A Large Scale Sensor Network at the Forest, Invited Talk, Massachusetts Institute of Technology, Boston, USA, June 15, 2010.

GreenOrbs, Keynote Speech, The 8th Annual China International Software Conference (Chinasoft 2010), Chengdu, China, April 19, 2010.

GreenOrbs, Keynote Speech, The Third China Wireless Sensor Network Conference (CWSN 2009), Su Zhou, China, Oct 21, 2009.

On The Applicability of Ad Hoc Networks: Security and Localizability, Keynote Speech, The 2nd IEEE International Conference on Broadband Network and Multimedia Technology, Beijing, China, Oct 18, 2009.

IOT, Internet of the Things, Keynote Speech, The 6th Web Information Systems and Applications Conference, Xu Zhou, Jiangsu, China, September 19, 2009.

Breaking the Privacy Barrier for Pervasive Computing, Keynote Speech, The 8th Conference on Information Hiding (CIHW 2009), Chang Sha, China - March 28, 2009

Mobile and Pervasive Computing: Localization and Modeling, Keynote Speech, The 9th International Conference for Young Computer Scientists, Zhang Jia Jie, Hunan, China - November 20, 2008.

Breaking the Privacy Barrier, Keynote Speech, The 5th IEEE International Conference on e-Business Engineering (IEEE ICEBE 2008), Xi'an, China, Oct 23, 2008.

P2P and Pervasive Computing, Keynote Speech, The Second International Conference on Management of E-Commerce and E-Government, Nanchang, China, October 19, 2008.

Mobile and P2P, Invited Talk, Shanghai Tongji University, April 2008.

Random Apple, Invited Talk, Tsinghua University, Beijing, China, March 2008.

Mobile and Pervasive Computing, Invited Talk, Peking University, Beijing, China, March 2008.

Pervasive Computing and Smart Space: Modeling and Applications, Keynote Speech, the 5th Hu Nan Dean's forum, Lou Di, China, Dec. 31, 2007

Coal Mine Surveillance and Sea Monitoring with Sensors, Invited Talk, Georgia Institute of Technology, Atlanta, USA, Dec 3, 2007

Free Pervasive Computing, Keynote Speech, the 24th National Database Conference (NDBC 2007), Hai Nan, China, Oct 20-22, 2007.

Wireless Sensor Network and Smart Space, Keynote Speech, China National Conference on Distributed and Parallel Computing Systems (DPCS 2007), Nan Ning, Guangxi, China, Oct 12-14, 2007.

Peer-to-Peer and Sensor Networks, Keynote Speech, National Annual Conference on Software and Application (NASAC 2007), Xi An, China, Sep 20-22, 2007.

Range-Free Localization in Anisotropic Sensor Networks, Conference Presentation, ACM MobiCom 2007, Canada, Sep 10-15, 2007.

Tag-free Object Tracking, Best Papers Presentation, IEEE PerCom 2007, USA, March 19-22, 2007.

Anonymizing Peer-to-Peer Networks, Invited Talk, University of California at Riverside, USA, March, 2007.

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