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About FNOT Professors Students Research
Wonjun Lee
Sangheon Pack
Ding-Zhu Du

Positions Held

  • WCU Professor in WCU FNOT (Future Network Optimization Technology) Research Center, Korea University
  • Professor in CS Dept., University of Texas at Dallas, USA
  • Dean of Science, Xi'an Jiaotong University, China

Research Interests

  • Future wireless networks and communications
  • Approximation algorithms for combinational optimization
  • Operations research
  • Theory of computation

Selected papers

  • X. Zhu, J. Yu, Wonjun Lee, D. Kim, S. Shan, and Ding-Zhu Du, "New Dominating Sets in Social Networks," accepted by Journal of Global Optimization.
  • D. Kim, Y. Wu, Y. Li, F. Zou, and Ding-Zhu Du, "Constructing Minimum Connected Dominating Sets with Bounded Diameters in Wireless Networks," IEEE Transactions on Parallel and Distributed Systems (IEEE TPDS), Vol. 20, No. 2, 2009.
  • F. Wang, M. Thai, and Ding-Zhu Du, "2-Connected Virtual Backbone in Wireless Networks," IEEE Transactions on Wireless Communications, Vol. 8, No. 11, 2009.
  • Z. Zhang, X. Gao, W. Wu, and Ding-Zhu Du, "A PTAS for Minimum Connected Dominating Set in 3-Dimensional Wireless Sensor Networks," Journal of Global Optimization, Vol. 45, No. 3, 2009.
  • M.T. Thai, R. Tiwari, and D.-Z. Du, "On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links", IEEE Transactions on Mobile Computing, accepted, 2008.
  • Feng Wang, My T. Thai, Yingshu Li, Xiuzhen Cheng, and Ding-Zhu Du, "Fault Tolerant Topology Control for One-to-All and All-to-One Communications in Wireless Networks", IEEE Transactions on Mobile Computing, 7 (2008) 322-331.
  • My T. Thai, Feng Wang, Dan Liu, Shiwei Zhu, and Ding-Zhu Du, "Connected dominating sets in wireless networks with different transmission ranges," IEEE Transactions on Mobile Computing, 6 (2007) 721-730.
  • Scott C.-H. Huang and Ding-Zhu Du, "New construction on broadcast encryption and key distribution scheme," Proceedings of IEEE INFOCOM’05, Miami, Florida (2005).
  • X. Jia, D. Li, and D.-Z. Du, "QoS topology control in ad hoc wireless networks", IEEE INFOCOM’04, Hong Kong, March 2004.
  • Y. Jang, H. Park, D.Z. Du, and B.L. Drake "A decision criterion for the optimal number of clusters in hierarchical clustering", Journal of Global Optimization, 25 (2003) 91 - 111.
  • X. Jia, D.-Z. Du, X. Hu, H. Huang, and D. Li, "Placement of Wavelength Converters for Minimal Wavelength Usage in WDM Networks," IEEE INFOCOM’02, New York, June 2002.
  • X. Jia, D.-Z. Du, X. Hu, M. Lee, and J. Gu, "ptimization of wavelength assignment for QoS multicast in WDM networks," IEEE Transactions on Coimmunications 49 (2001) 341 - 350.
  • G. H. Lin, D.-Z. Du, X.?D. Hu, and G. Xue "On rearrangeabilty of multirate Clos networks," SIAM Journal of Computing 29 (1999) 1225 - 1231.
  • Borchers and D.-Z. Du, "The k-Steiner ratio in graphs", Proceedings of 27th ACM Symposium on Theory of Computing, 1995. Also in SIAM Journal of Computing 26 (1997) 857 - 869.