Invited Conference Presentations

  1. “Electronic delivery of public services by government”, Joint OECD-Private Sector Workshop on Electronic Authentication, Stanford and Menlo Park, California, June 1999.
  2. “An accessment of the real and perceived barriers to e-commerce”, Expanding the Application and Benefits of Electronic Commerce in the Asia-Pacific Region - An APEC-PECC Communication & Information Policy Dialogue, Bandar Seri Begawan, Brunei Darussalam, March 1998.
  3. “Ensuring security in the digital age”, Keynote Address, IT Security, Singapore, November 1997.
  4. “Frameproof digital fingerprinting”, DISCS Systems Security Colloquium ‘97, Singapore, October 1997.
  5. “Public-key cryptography and some of its ramifications”, First Ministry of Defence Annual Communications Technology Seminar, Singapore, October 1991.
  6. “Issues in combinatorial optimization”, Workshop on Optimization ‘90, Singapore, December 1990.
 

Talks at Conferences & Workshops

  1. “Combinatorial key distribution for secrecy channels”, Gemplus Developer Conference 2002, Singapore, November 2002.
  2. “Some problems in extremal set theory arising from group testing”, 10th Ontario Combinatorics Workshop, Toronto, Ontario, April 1996.
  3. “Algorithms for constructing difference triangle sets”, 27th Southeastern International Conference on Combinatorics, Graph Theory, and Computing, Baton Rouge, Louisiana, February 1996.
  4. “A complex approach to the security of statistical databases subject to off-line sum queries”, 8th IFIP International Information Security Conference, Singapore, May 1992.
  5. “The cryptanalysis of a new public-key cryptosystem based on modular knapsacks”, CRYPTO ‘91, Santa Barbara, California, August 1991.
  6. “Simularted annealing algorithm for the fault-covering of redundant RAMs”, 24th International Symposium on Circuits and Systems, Singapore, June 1991.
  7. “Graph partitioning using tabu search”, 24th International Symposium on Circuits and Systems, Singapore, June 1991.
  8. “Large sets of disjoint designs”, American Mathematical Society Meeting, Special Session on Codes and Designs, Chicago, Illinois, May 1989.
  9. “Some small simple t-designs”, 20th Southeastern International Conference on Combinatorics, Graph Theory, and Computing, Boca Raton, Florida, February 1989.
 

Colloquia & Seminars Presented

  1. “Erasure-resilient codes”, Colloquium on Discrete and Experimental Mathematics, Department of Computer Science and Engineering, University of Nebraska - Lincoln, October 1996.
  2. “Algorithms for constructing difference triangle sets”, Design Theory Seminar, Department of Combinatorics & Optimization, University of Waterloo, February 1996.
  3. “Approximating maximum cuts”, Combinatorial Optimization Seminar, Department of Combinatorics & Optimization, University of Waterloo, July 1995.
  4. “Projective spaces over rings”, Design Theory Seminar, Department of Combinatorics & Optimization, University of Waterloo, April 1995.
  5. “The union construction for 3-designs”, Design Theory Seminar, Department of Combinatorics & Optimization, University of Waterloo, November 1994.
  6. “Public-key cryptography”, Defence Science Organization, Ministry of Defence, October 1991.
  7. “Tabu search”, Department of Information Systems and Computer Science, National University of Singapore, October 1989.
  8. “Applications of combinatorial designs in computer science and their constructions”, Department of Information Systems and Computer Science, National University of Singapore, September 1989.