Presentations

  1. Invited Lecture, Department of Mathematics Colloquium, Southern Methodist University, Dallas, TX, March 2024.
  2. SIAM Conference on Optimization (OP23), Seattle, WA, June 2023: Optimal control and optimal design of electromagnetic devices.
  3. 17th U.S. National Congress on Computational Mechanics, Albuquerque, NM, July 2023: Toward scalable optimization methods for property-preserving finite element discretizations of transport problems.
  4. Trilinos User-Developer Meeting, Albuquerque, NM, October 2022: Extreme-scale Electromagnetics for Design and Control of Metamaterials.
  5. 7th International Conference on Continuous Optimization (ICCOPT), Bethlehem, PA, July 2022: Uniform flow in axisymmetric devices through permeability optimization.
  6. Virtual mini-symposium on Regularization and Augmented Lagrangian Techniques for Large-scale Optimization, Universit√§t der Bundeswehr M√ľnchen, June 2022 (by invitation only): An Augmented Lagrangian Equality-constrained SQP (ALESQP) Method for Optimization in Function Space.
  7. Invited Lecture, SIAM Chapter of University of Utah, Salt Lake City, UT, April 2022.
  8. Invited Lecture, Sayas Numerics Seminar, Organized by University of Maryland, College Park, University of Maryland, Baltimore County, George Mason University and University of Delaware, November 2020.
  9. SIAM Conference on Parallel Processing (PP20), Seattle, WA, February 2020: Multigrid-in-Time SQP Methods for PDE-Constrained Optimization.
  10. 3rd Annual Meeting of the SIAM TX/LA Section, College Station, TX, October 2020 (virtual): An Augmented Lagrangian Equality-constrained SQP (ALESQP) Method for Function-space Optimization with General Constraints.
  11. IEEE-MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO2019), Boston, MA, May 2019: Adjoint-based Parallel-in-time Optimization for Electromagnetics: From Source Inversion to Design.
  12. SIAM Conference on Computational Science and Engineering (CSE19), Spokane, WA, February 2019: Scalable Optimization of Discrete-Time PDE Systems with Inequality Constraints.
  13. 6th International Conference on Continuous Optimization (ICCOPT), Berlin, Germany, August 2019: A multigrid-in-time augmented-Lagrangian method for constrained dynamic optimization.
  14. 23rd International Symposium on Mathematical Programming (ISMP2018), Bordeaux, France, July 2018: Multigrid-in-time methods for optimization with nonlinear PDE/DAE constraints.
  15. SIAM Conference on Uncertainty Quantification (UQ18), Garden Grove, CA, April 2018: Scalable Algorithms and Software for PDE-Constrained Optimization Under Uncertainty.
  16. Trilinos User-Developer Meeting, Albuquerque, NM, October 2017: Rapid Optimization Library (ROL).
  17. International Conference on Numerical Methods for Multi-Material Fluid Flows (MULTIMAT 2017), Santa Fe, NM, September 2017: Property preserving finite element methods via constrained optimization.
  18. SIAM Conference on Computational Science and Engineering (CSE17), Atlanta, GA, March 2017: Inexact parallel-in-time solvers and SQP methods for PDE-constrained optimization.
  19. Invited Lecture, Department of Mathematics and Statistics, University of New Mexico, February 2016.
  20. SIAM Conference on Uncertainty Quantification (UQ16), Lausanne, Switzerland, April 2016: A Full- Space Approach to Stochastic Optimization with Simulation Constraints.
  21. 13th U.S. National Congress on Computational Mechanics (USNCCM13), San Diego, CA, July 2015: Inexact full-space methods for simulation-based inverse problems and large-scale optimization.
  22. Invited Lecture, Applied and Computational Mathematics Seminar, Department of Mathematical Sciences, George Mason University, April 2015.
  23. Invited Lecture, Numerical Analysis Seminar, Department of Mathematics, University of Maryland, April 2015.
  24. SIAM Conference on Computational Science and Engineering (CSE15), Salt Lake City, UT, March 2015: Integration of Approximate Schur Preconditioners and SQP Algorithms for Nonlinear PDE Optimization under Uncertainty.
  25. Workshop on Modeling and Simulation of Transport Phenomena, Treis-Karden, Germany, July 2014: Optimization-based models and algorithms for feature-preserving finite element transport.
  26. Computing and Information Science (CIS) External Review, Sandia National Labs, Albuquerque, NM, May 2013: Scalable Algorithms for Large-Scale Inversion and Design.
  27. Keynote Lecture, 5th Conference on Computational Methods for Coupled Problems, Ibiza, Spain, June 2013: Solving massive-scale inverse problems using matrix-free sequential quadratic programming (SQP) methods.
  28. 9th International Conference on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 2013: Fast algorithms for optimization-based remap and transport with feature preservation.
  29. Workshop on Numerical Methods for PDE Constrained Optimization with Uncertain Data, Mathematical Research Institute, Oberwolfach, Germany, January 2013 (by invitation only): Preconditioning of a Full-Space Trust-Region SQP Algorithm for PDE-constrained Optimization.
  30. 21st International Symposium on Mathematical Programming (ISMP 2012), Berlin, Germany, August 2012: A matrix-free trust-region SQP algorithm for large-scale optimization.
  31. Workshop on Modeling and Simulation of Transport Phenomena, Treis-Karden, Germany, July 2012: Optimization-Based Remap and Transport: A Divide and Conquer Strategy for Feature-Preserving Discretizations.
  32. Invited Lecture, Argonne National Lab, Lemont, IL, April 2012.
  33. 12th Copper Mountain Conference on Iterative Methods, Copper Mountain, CO, March 2012: Preconditioning of Matrix-Free Full-Space Trust-Region SQP Algorithms for Nonlinear PDE Optimization.
  34. 8th International Conference on Large Scale Scientific Computations, Sozopol, Bulgaria, June 2011: Optimization-based modeling with applications to transport: The optimization algorithm.
  35. SIAM Conference on Optimization (OP11), Darmstadt, Germany, May 2011: Integration of Data Reduction Techniques and Optimization Algorithms.
  36. SIAM Conference on Computational Science and Engineering (CSE11), Reno, NV, March 2011: Optimization-Based Remap.
  37. 11th Copper Mountain Conference on Iterative Methods, Copper Mountain, CO, April 2010: A Robust Matrix-Free SQP Method for Large-Scale Optimization.
  38. NNSA BER Meeting on Transport Equations in Atmospheric Modeling, Sandia National Labs, NM, March 2010: Optimization-Based Constrained Modeling: A New Transport Paradigm.
  39. Invited Lecture, 9th Annual Red Raider Mini-Symposium, Department of Mathematics and Statistics, Texas Tech University, Lubbock, TX, October 2009.
  40. Invited Lecture, Numerical Analysis Seminar, Los Alamos National Laboratory, Los Alamos, NM, August 2009.
  41. 7th International Conference on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 2009: Additive Operator Decomposition and Optimization-Based Reconnection with Applications.
  42. Workshop on Numerical Techniques for Optimization Problems with PDE Constraints, Mathematical Research Institute, Oberwolfach, Germany, January 2009 (by invitation only): Robust Solution Methods via Optimal Control Reformulation.
  43. Invited Lecture, Special Session on Scientific Computing and Advanced Computation, Joint Mathematics Meeting (AMS/MAA/SIAM), Washington, DC, January 2009.
  44. Invited Lecture, Applied Math Colloquium, Department of Mathematics, University of Utah, Salt Lake City, UT, November 2008.
  45. 5th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), Venice, Italy, July 2008: Scalable Solution Methods for Advection-Dominated PDEs Using an Optimal Control Reformulation.
  46. John von Neumann Fellowship Lecture, Sandia National Labs, Albuquerque, NM, November 2007: Analysis and Control of Numerical Uncertainty in PDE-Constrained Optimization.
  47. Invited Lecture, Dept. of Mathematics and Statistics, Texas Tech University, Lubbock, TX, October 2007.
  48. 14th International Conference on Finite Elements in Flow Problems, Santa Fe, NM, March 2007: A Comparative Study of Galerkin and Mixed Galerkin Methods in Optimal Control Problems with Applications to Semiconductor Modeling.
  49. SIAM Conference on Computational Science and Engineering, Costa Mesa, CA, February 2007: Solution of Optimal Control Problems Arising in the Modeling and Design of Semiconductors.
  50. SIAM Conference on Parallel Processing for Scientific Computing, San Francisco, CA, February 2006: Parallel Solution of Optimal Control Problems Using an Inexact SQP Algorithm.
  51. SIAM Annual Meeting, New Orleans, LA, July 2005: Use of Iterative Linear Solvers in a Lagrange-Newton SQP Algorithm for Large-Scale Nonlinear Optimization.
  52. SIAM Conference on Computational Science and Engineering, Orlando, FL, February 2005: A Sequential Quadratic Programming Framework for Large-Scale PDE-Constrained Optimization.
  53. VIGRE Seminar on Simulation-Driven Optimization, CAAM Department, Rice University, Houston, TX, February 2005: A Domain Decomposition Preconditioner for Optimal Control Problems Governed by Advection-Diffusion PDEs.
  54. ExxonMobil Upstream Research Company, Houston, TX, January 2004: A General Software Framework for Trust-Region SQP Algorithms.