When someone asks me before a presentation if I am ready, I usually say that I will be ready at the end. Unless I am supposed to deliver a speech that has been well written (long in advance), it is at the end of a presentation that I always remember what I should have said but I did not. Now that I am ready to say it, everything is over!!!
KNJR, 1998.

1. Optimization of a Private Phone Network in a Competitive Environment, Department of Mathematics, The George Washington University, November 9, 1993.
2. Multigrid Solution of the Convection-Diffusion Equations, Department of Mathematics, The George Washington University, October 20, 1995.
3. Introduction to Climate Modeling , Department of Mathematics, The George Washington University, December 6, 1996.
4. Asymptotic stability of a 9-point multigrid algorithm for the convection-diffusion equations, 8th Copper Mountain Conference on Multigrid Methods, Copper Mountain, CO, April 6-11, 1997.
5. Implementing the NCAR Community Climate Model on the Cray J-90 and the Cray T3D/E, Tea and Posters, NASA Goddard Space Flight Center, June 19, 1997.
6. High-Order Multigrid Methods for Fluid Dynamics, Tea and Posters, NASA Goddard Space Flight Center, October 7, 1997.
7. High-Order Multigrid Methods for Fluid Dynamics, The Mathematical Group, NASA Goddard Space Flight Center, November 1997.
8. Simulation Studies Related to EOS, Tea and Posters, NASA Goddard Space Flight Center, March 10, 1998.
9. Implemting MM5 on NASA Goddard Space Flight Center Computing Systems: a Performance Study, Tea and Posters, NASA Goddard Space Flight Center, October 8, 1998.
10. Implemting MM5 on NASA Goddard Space Flight Center Computing Systems: a Performance Study, The 7th Symposium on the Frontiers of Massively Parallel Computation, Annapolis, Maryland, February 24, 1999.
11. High-Order Schemes and Collocation Methods for the Numerical Solution of the Heat Equation, Department Colloquium, Department of Mathematics, The George Washington University, March 12, 1999.
12. High-Order Schemes and Collocation Methods for the Numerical Solution of the 1-D Heat Equation, Tea and Posters, NASA Goddard Space Flight Center, March 30, 1999.
13. Scaling Performance of MM5 on the Cray T3E and a Beowulf-like System, The 1999 International Conference on Parallel and Distributed Processing Techniques and Applications, Las Vegas, Nevada, July 1, 1999.
14. Multigrid Solution of 3D Convection-Diffusion Equations: Stability Analysis of a High-Order Scheme, The Fourth International Congress on Industrial and Applied Mathematics, Edinburgh, Scotland, July 7, 1999.
15. Optimization of the Eta Model Code on the Cray T3E, Tea and Posters, NASA Goddard Space Flight Center, December 21, 1999.
16. Performance of an optimized Eta model code on the Cray T3E and a network of PCs, HPCC/CAS 2000 Workshop, NASA Ames Research Center, February 16, 2000.
17. High-Order Schemes and Collocation Methods for the Solution of the Heat Equation, Department of Computer Science, University of Kentucky, March 10, 2000.
18. Cloud Field Data Simulation Experiments Related to Triana, Tea and Posters, NASA Goddard Space Flight Center, July 20, 2000.
19. Parallel implementation of a high-order implicit collocation method for the heat equation, the First SIAM Conference on Computational Science and Engineering, Washington, DC, September 24, 2000.
20. Implementation of an Eta belt domain on parallel systems, The 2001 International Parallel and Distributed Processing Symposium, Workshop on Parallel and Distributed Scientific and Engineering Computing with Applications, San Francisco, CA, April 23-27, 2001.
21. Comparison of Time and Spatial Collocation Methods for the Heat Equation, Tea and Posters, NASA Goddard Space Flight Center, July 18, 2002.
22. Benchmarking the Mesoscale Weather Prediction Model MM5 on Various Parallel Computers at the NASA Center for Computational Science , Tea and Posters, NASA Goddard Space Flight Center, October 10, 2002.