Geoffrey Oxberry
Postdoctoral Researcher at Lawrence Livermore National Laboratory
 Location
 San Francisco Bay Area
 Industry
 Research
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Geoffrey Oxberry's Overview
 Current

 Postdoctoral Researcher, Engineering at Lawrence Livermore National Laboratory
 Volunteer Pro Tempore Moderator, Computational Science Stack Exchange at Stack Exchange
 Past

 Graduate Student at Massachusetts Institute of Technology
 CSGF Practicum Intern at Sandia National Laboratories
 Intern in Process Dynamics and Control Group at DuPont
 Undergraduate Research Assistant at University of Delaware
 Education
 Connections

164 connections
 Websites
Geoffrey Oxberry's Summary
Chemical engineer with research experience in model reduction, computational fluid mechanics and chemical kinetics. Familiar with numerical methods, particularly in optimization and ordinary differential equations. Also familiar with C, C++, FORTRAN, MATLAB, and Python. Basic understanding of algorithms & data structures. Interested in data science and software development.
Specialties: Optimization methods, model reduction, chemical kinetics.
Geoffrey Oxberry's Experience
Postdoctoral Researcher, Engineering
Lawrence Livermore National Laboratory
Government Agency; 500110,000 employees; Research industry
November 2012 – Present (1 year 11 months) Livermore, CA
Developed adaptive proper orthogonal decomposition (POD) methods that yield reduced order models with 10x fewer equations than conventional POD methods. Currently working on finite element models and PDEconstrained optimization for battery applications.
Volunteer Pro Tempore Moderator, Computational Science Stack Exchange
Stack Exchange
Privately Held; 51200 employees; Internet industry
December 2011 – Present (2 years 10 months)
Moderator and curator of Computational Science Stack Exchange (http://scicomp.stackexchange.com/). Helped grow community from a few hundred users to over 2,300 users (and counting, as of 12/16/2012). Voted on questions, answered and asked questions. Edited both questions and answers. Resolved disputes between users. Encouraged users to edit questions and answers for clarity and usefulness.
Graduate Student
Massachusetts Institute of Technology
Educational Institution; 500110,000 employees; Higher Education industry
August 2006 – September 2012 (6 years 2 months) Cambridge, MA
Thesis: Global Error Bounds on Model Reduction in Combustion
Developed theory to unify many model reduction methods used both within and outside of combustion into a single formalism. Used that formalism to prove global error bounds on solutions of reduced order models. Also published paper using mixedinteger programming and operations research methods to create an algorithm for model reduction in combustion. Implementation in Python can be found on http://github.com/goxberry/ChemReduce.
CSGF Practicum Intern
Sandia National Laboratories
Government Agency; 500110,000 employees; Defense & Space industry
June 2008 – August 2008 (3 months)
Worked as a research assistant under Dr. Bert Debusschere and Dr. Habib Najm on combustion modeling using polynomial chaos expansions.
Intern in Process Dynamics and Control Group
DuPont
Public Company; 10,001+ employees; DD; Chemicals industry
June 2006 – August 2006 (3 months)
Worked under Dr. Bob Cox to fit equation of state parameters to polymersolvent systems. Also developed an algorithm to determine one of pressure, density, or temperature, given data for the other two state variables.
Undergraduate Research Assistant
University of Delaware
Educational Institution; 10015000 employees; Higher Education industry
June 2003 – August 2006 (3 years 3 months)
Created data compression and processing routines using FORTRAN90, FFTW libraries, LAPACK libraries, and simple Perl scripts. Characterized coherent structures in both Newtonian and nonNewtonian turbulent flows by analyzing direct numerical simulation data from a computational fluid dynamics code.
Geoffrey Oxberry's Certifications

Engineer In Training
 Delaware Association of Professional Engineers
 License 826
 April 2006
Geoffrey Oxberry's Projects

ChemReduce
 July 2012 to Present
Team Members: Geoffrey OxberryReimplemented the algorithms from:
1. B. Bhattacharjee, D. A. Schwer, P. I. Barton, and W. H. Green. Optimallyreduced kinetic models: reaction elimination in largescale kinetic mechanisms. Combustion and Flame, 135: 191208, 2003.
2. A. Mitsos, G. M. Oxberry, P. I. Barton, and W. H. Green. Optimal automatic reaction and species elimination in kinetic mechanisms. Combustion and Flame, 155: 118132, 2008.
in Python in order to make both papers more reproducible, and disseminate the research in both papers more widely by providing a permissively license open source implementation.
Geoffrey Oxberry's Languages

Spanish
Geoffrey Oxberry's Skills & Expertise
 Fortran
 Numerical Analysis
 Numerical Simulation
 Matlab
 Python
 Algorithms
 Modeling
 C++
 Combustion
 Perl
 C
 GAMS
 CPLEX
 Gurobi
 Operations Research
 Linear Programming
 Nonlinear programming
 Mixedinteger programming
 Global Optimization
 Scheme
 NumPy
 SciPy
 Real Analysis
 Functional Analysis
 Abstract Algebra
 Chemkin
 Cantera
 Unit Testing
 Git
 CVS
 Ordinary Differential Equations
 Numerical Linear Algebra
 LaTeX
 Microsoft Office
 HTML 5
 JavaScript
 CSS3
 jQuery
 XML
 Linear Algebra
Geoffrey Oxberry's Education
University of Delaware
BChE, Chemical Engineering
2002 – 2006
Graduated summa cum laude, ranked 1/52 in graduating class in major.
Activities and Societies: Tau Beta Pi, Academic Competition Club, Resident Assistant (20032004)
University of Delaware
MChE, Chemical Engineering
2002 – 2006
Graduated with combined bachelors and masters in four years or fewer. One of a handful of students to do so since 1970.
Geoffrey Oxberry's Additional Information
 Websites:
 Interests:

Data science, software development, mathematics, physics, volleyball, ultimate, soccer.
 Groups and Associations:

SIAM, AIChE, Tau Beta Pi
 Honors and Awards:

Dean's List (all 8 semesters)
University of Delaware Scholar Award, 20022006
General Honors Award, 2004
Chemical Engineering Industrial Sponsors Award, 2004
National Dean's List Nominee (20042005)
Amerada Hess Corporation Award, 2005
Barry M. Goldwater Scholar, 20052006
Mathematical Contest in Modeling, Meritorious Award (top ~10% in world) 2005, 2006
University of Delaware Panel of Distinguished Seniors (College of Engineering Representative), 2006
Tau Beta Pi Fellow, 20062007
University of Wisconsin HougenDahlke Fellow (declined), 2006
MIT Robert Haslam Presidential Fellow, 20062007
DOE CSGF Fellow, 20072011
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