# Research: Presentations

A Voice and A Vision of Your Own

Keynote Address, Northern California Diversity Forum, University of California, Merced, April 8, 2017

Computational Math and Science: How Mathematics Will Help Save the World

General Education Course Guest Lecture, University of California, Merced, California, Fall 2016*See earlier versions of this lecture:*

Derivative-Free Optimization Methods for a Surface Structure Determination Problem

Applied Math Seminar, University of California, Merced, California, October 7, 2016

Derivative-Free Optimization Methods for a Surface Structure Determination Problem

Workshop on Nonlinear Optimization Algorithms and Industrial Applications, Toronto, Canada, June 2–4, 2016

A Short Tour of Derivative-Free Optimization

Optimization Seminar, University of California, Merced, California, Spring 2016

Derivative-Free Optimization Methods for a Surface Structure Inverse Problem

22nd International Symposium on Optimization, Pittsburgh, Pennsylvania, July 12-17 2015

￼￼￼A Trust Region Direct Constrained Minimization Algorithm for the Kohn-Sham Equations

Optimization Seminar, University of California, Merced, California, Spring 2015

The TOP 10 Mistakes: The Unwritten Rules of Interviewing for Industrial and Academic Jobs

Empowering Leadership Alliance (ELA), Rice University, Houston, Texas, March 24, 2015

Adventures of an Improbable Scientist

Invited Keynote Talk, UC Berkeley Science Network, Asilomar Conference Center, Pacific Grove, California, March 7, 2015

Derivative-Free Optimization Methods for the Surface Structure Determination Problem

International Conference on Continuous Optimization, Lisbon, Portugal, July 27–August 1, 2013

Mathematical Challenges and Opportunities in Energy and the Environment

25th Biennial Numerical Analysis Conference, University of Strathclyde, Glasgow, Scotland, June 25–28, 2013

How to Succeed in Science: Lessons From the Soccer Field

UC LEADS Keynote, University of California, Santa Cruz, California, March 2, 2013

Derivative-Free Optimization Methods for Determining the Surface Structure of Nanosystems

21st International Symposium on Mathematical Programming, Berlin, Germany, August 19–24, 2012

Future Directions in High Performance Computing

Society of Exploration Geophysicists, Houston, Texas, October 26, 2009.

Computation for CCS, Buildings, and Renewables

Carbon Cycle 2.0 Meeting, Chaminade, Santa Cruz, California, October 11–13, 2009.

The Mathematics Behind Energy and Earth Systems Modeling

Center for Science Excellence, Contra Costa College, San Pablo, California, October 2, 2009.

Large-Scale Scientific Data Management and Visualization

National Energy Technology Laboratory (NTEL), Morgantown, West Virginia, September 22, 2009.

Optimization: The Difference Between Theory and Practice ...

SIAM Annual Conference, Denver, Colorado, July 6–10, 2009.

The Mathematics Behind Energy and Earth Systems Modeling

SIAM Annual Conference, Workshop Celebrating Diversity: Applications of Mathematics, Denver, Colorado, July 6–10, 2009.

the-mathematics-behind-energy-and-earth-systems-modeling-siam.pdf

Computing Sciences at Berkeley Lab

SUPERB: Summer Undergraduate Research, University of California, Berkeley, California, June 24, 2009.

computing-sciences-at-berkeley-lab.pdf

Mathematics, Energy, and Climate Change

M*A*T*H Colloquium, Mathematics Department, Sonoma State University, Sonoma, California, April 28, 2009.

mathematics-energy-and-climate-change.pdf

Success, Failure, and Leadership—What You Need to Know

UC Leads, Sacramento, CA, March 8, 2009.

Linearly Scaling Three Dimensional Fragment Method for Large Scale Electronic Structure Calculations

2008 Gordon Bell Special Prize Talk, ASCAC Meeting, Washington, DC, March 3, 2009.

Optimization: The Difference Between Theory and Practice …

SAMSI Special Workshop and Blackwell-Tapia Conference, Research Triangle Park, North Carolina, November 14–15, 2008.

A Direct Constrained Optimization Method for the Kohn-Sham Equations (with Chao Yang and Lin-Wang Wang)

North Carolina State University, Raleigh, North Carolina, November 13, 2008.

A Direct Constrained Optimization Method for the Kohn-Sham Equations

University of Texas, El Paso, Texas, September 12, 2008.

Computing Sciences at Berkeley Lab. Parallel Computing Laboratory (ParLab)

University of California, Berkeley, California, September 9, 2008.

**Challenges in Using Derivative-Free Optimization Methods for Scientific Applications**

SIAM Conference on Optimization, Boston, Massachusetts, May 2008.

The Role of Mathematics in Amplifying Science Research

Keynote Speaker, Undergraduate Mathematics Conference, Sonoma State University, Rohnert Park, California, April 19, 2008.

**The Role of Mathematics in Amplifying Science Research**

NSF CAMP/UC Leads, University of California, Berkeley, California, March 13, 2008.

**I Want to Be a (Computational) Mathematician**

Keynote Speaker, Marjorie Lee Browne Colloquium, University of Michigan, Ann Arbor, Michigan, January 21, 2008.

**A Direct Constrained Optimization Method for Solving the Kohn-Sham Equations**

Applied Mathematics Seminar, University of Michigan, Ann Arbor, Michigan, January 18, 2008.

**The Role of Mathematics in Amplifying Science Research**

Mathematics Department Seminar, University of San Diego, San Diego, California, November 8, 2007.

**Computational Mathematics: Role, Impact, Challenges**

NCN/COINS/Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, November 6, 2007.

**Computational and Mathematical Tools for Electronic Structure Calculations**

Molecular Foundry Seminar Series, Lawrence Berkeley National Laboratory, Berkeley, California, October 24, 2007.

**Research Opportunities in Computational Math and Science**

Berkeley EDGE Conference, Berkeley, California, October 20, 2007.

**Strengthening Your Link in the Mentorship Chain**

Berkeley EDGE Panel, University of California, Berkeley, California, October 9, 2007.

Recent Developments in Electronic Structure Calculations

ALS Workshop on Photon-in/Photon-out Inelastic Soft-X-Ray Scattering in Renewable Energy Science, Advanced Light Source Users Meeting, Berkeley, California, October 4–6, 2007.

**If I Had a Cookie …**

UC LEADS/NSF CAMP Diversity Science Students Seminar, Berkeley, California, August 29, 2007.

Advanced Algorithms for Analyzing Vulnerabilities in the Electric Power Grid

2007 Monterey Homeland Security Conference, Naval Post-Graduate School, Monterey, California, August 21–24, 2007.

Surface Structure Determination of Nanostructures Using a Mesh Adaptive Direct Search Method

Sixth International Congress on Industrial and Applied Mathematics, Zurich, Switzerland, July 16–20, 2007.

**A Short Tour of Computational Science and Mathematics**

Conference for African-American Researchers in the Mathematical Sciences, Boston, Massachusetts, June 22, 2007.

Research Job Interviews: The Unwritten Rules

Alliance for Graduate Education and the Professoriate, Rice University, Houston, Texas, June 8, 2007.

A Short Overview of Computational Nanoscience

Advanced Light Source Seminar, Lawrence Berkeley National Laboratory, Berkeley, California, June 6, 2007.

Surface Structure Determination of Nanostructures Using a Mesh Adaptive Optimization Method

SIAM Conference on Computational Science and Engineering, Costa Mesa, California, February 19–23, 2007.

The Unwritten Rules of Interviewing

SIAM Student Chapter Seminar, Rice University, Houston, Texas, January 12, 2007.

Surface Structure Determination Using Simplified Physics Surrogates

Second International Workshop on Surrogate Modeling and Space Mapping for Engineering Optimization, Copenhagen, Denmark, November 9–11, 2006.

The Three Pillars of Science

Sandia National Laboratories, Livermore, California, July 20, 2006.

the-three-pillars-of-science.pdf

**An Introduction to Parallel Optimization Methods**

SIAM Parallel Processing Conference, San Francisco, California, February 22–24, 2006.

Generalized Pattern Search Methods for a Structure Determination Problem

SIAM Optimization Conference, Stockholm, Sweden, May 15–19, 2005.

generalized-pattern-search-methods-for-a-structure-determination-problem.pdf

LBNL, NERSC and ESnet Update

SOS9 Workshop, Davos, Switzerland, March 21–23, 2005.

Optimization Methods for Simulation-Based Problems in Nanoscience

SIAM CSE Conference, Orlando, Florida, February 12–15, 2005.

Amplifying Science Research Through Computational Sciences

AGEP Seminar, Rice University, Houston, Texas, July 16, 2004.

The Art of Giving Talks: Some Thoughts, Advice, and Lessons Learned the Hard Way

Lawrence Berkeley National Laboratory CS Summer Student Seminar, Berkeley, California, June 28, 2004.

Optimization Methods in Science and Engineering

SACNAS National Conference, Albuquerque, New Mexico, October 2–5, 2003.

**OPT++: An Object-Oriented Toolkit for Nonlinear Optimization**

Fourth Workshop on the DOE Advanced Computational Software Collection, Berkeley, California, August 24–27, 2003.

OPT++: A Toolkit for Nonlinear Optimization

5th Annual ICIAM Conference 2003, Sydney, Australia, July 7–11, 2003.

Giving Good Talks Isn't as Hard as it Looks

Lawrence Berkeley National Laboratory Summer Student Seminar Series, Berkeley, California, July 22, 2002.

Challenges and Approaches for Simulation-Based Optimization Problems

SIAM Conference on Optimization Conference, Toronto, Canada, May 20–22, 2002.

**Some New Approaches for Solving Simulation-Based Optimization Problems**

San Diego State University, San Diego, California, December 14, 2001.

**Parallel Optimization Methods for Simulation-Based Optimization**

Richard Tapia Celebration of Diversity in Computing Symposium, Houston, Texas, October 19, 2001.

**Using Design of Computer Experiments to Quantify Uncertainty in Simulations**

Sensitivity Analysis Workshop, Livermore, California, August 16–17, 2001.

Giving Talks for Fun and Profit

Alliances for Graduate Education and the Professoriate Summer Program Seminar, Rice University, Houston, Texas, July 27, 2001.

**The Role of Computational Mathematics in Industrial Problems**

IMA Career Workshop in Computational Science and Engineering: Minorities in Applied Mathematics - Connections to Industry and Government Labs, Minneapolis, Minnesota, May 4–6, 2001.

Optimization Challenges and Opportunities in the ASCI Program

First Workshop on Large-Scale PDE-Constrained Optimization, Santa Fe, New Mexico, April 4–6, 2001.

**A Class of Trust-region Methods for Simulation-Based Optimization**

SIAM CSE00, Washington, DC, September, 23, 2000.

**I Want to be a Computational Mathematician**

Second Minorities and Applied Mathematicians Conference - Connections to Industry and Laboratories, Berkeley, California, September 17–19, 1998.

**Optimal Design and Control of Chemical Vapor Deposition Reactors**

IMA Workshop, "Minorities and Applied Mathematics: Connections to Industry", October 4–6, 1996.

**In Search of Optimal Designs**

Minority Undergraduate Research and Participation in the Physical and Mathematical Sciences, University of California, Davis, March 15, 1995.

**The Role of Mathematics in Computational Science and Engineering**

CAMP Seminar Series, University of California, Irvine, March 8, 1993.

**Massively Parallel Methods for Nonlinear Equations and Optimization**

DOE/Office of Scientific Computing Workshop, Albuquerque, New Mexico, February 2–5, 1993.

**Massively Parallel Scientific Computation**

Society for the Advancement of Chicanos and Native Americans in the Sciences, San Antonio, Texas, January 2–6, 1992.

**Three Dimensional Semiconductor Device Modeling**

Conference on Numerical Optimization Methods In Differential Equations and Control, Raleigh, North Carolina, July 15–17, 1991.

**Three-Dimensional Time-Dependent Semiconductor Device Modeling**

Proceedings of the Fifth International Workshop on Physics of Semiconductor Devices, New Delhi, India, December 11–15, 1989.

**Semiconductor Device Modeling**

Miniconference on Newton-Like Methods for Large-Scale Nonlinear Systems, Logan, Utah, August 27–29, 1989.