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Adrian Sandu – Resume 1

Adrian Sandu

Associate Professor

Department of Computer Science

Virginia Polytechnic Institute and State University

Blacksburg, VA 24060

Office: 224 KnowledgeWorks II

E-Mail: [email protected]

Phone: (540)-231-2193

Fax: (540)-231-9218

Homepage: http://www.cs.vt.edu/~asandu

Education

Postdoc Courant Institute, NYU Computational Biology 1997-98

Ph.D. University of Iowa Applied Mathematical and

Computational Sciences 1997

M.S. University of Iowa Computer Science 1997

B.S./M.S. Polytechnic Institute Bucharest Electrical Engineering 1990

Research Interests

Scientific Computing, Parallel Computing, Mathematical Software Development,

Numerical Methods for Stiff ODE, DAE, Conservation Laws,

Advection-Diffusion-Reaction Equations, Sparse Linear Algebra,

Sensitivity Analysis, Data Assimilation, Automatic Differentiation,

Air Quality Modeling, Computational Biology.

Appointments

Associate Prof. Computer Science Virginia Polytechnic Institute 2003 to day

Assistant Prof. Computer Science Michigan Technological University 1998-2003

Postdoctoral Research Associate Courant Institute, NYU 1997-98

Teaching and Research Assistant The University of Iowa 1992-97

Instructor Polytechnic Institute Bucharest 1991-92

Research Engineer ICI Bucharest 1990-91

Personal

Married to Corina Sandu; two daughters: Andreea and Monica.

2 Adrian Sandu – Resume

Professional Service

National and International

– Editorial Board, Applied Numerical Mathematics, since 2006. APNUM is a high quality

international journal focused on computational mathematics. (http://www.elsevier.

com/wps/find/journaldescription.cws_home/505602/description)

– Topical Editor, Geoscientific Model Development, since 2007. GMD is an interna-

tional scientific journal dedicated to the description, development, and benchmark-

ing of numerical models of the Earth system and its components. (http://www.

geoscientific-model-development.net)

– Editorial Board, International Journal of Computer Mathematics, since 2010. IJCM

(Section B) publishes original work in the fields of numerical analysis, mathemati-

cal software, and applied mathematics. (http://www.tandf.co.uk/journals/titles/

00207160.asp)

– Member, NSF TeraGrid Resource Allocations Committee, since 2008. TeraGrid is the

world’s largest, most comprehensive distributed cyberinfrastructure for open scientific

research. (http://www.teragrid.org)

– Co-chair of “Large and Heterogeneous Data” work group and co-author of the report for

the “Dynamic Data-Driven Applications Systems (DDDAS) - InfoSymbiotic Systems”

workshop Arlington, Virginia, August 30-31, 2010.

Department

– Computer Science Department Promotion and Tenure Committee, 2009

– Chair of Computer Science Graduate Admissions Committee, 2006–2009

– Computer Science Department Graduate Admissions Committee, 2005

– HPC Qualifier Committee Chair, Computer Science Department, 2004–2005; 2009

Conferences

Leadership positions involving the management of paper submission, review, and acceptance:

– General chair, High Performance Computing Symposium (HPC 2010), Orlando, Florida, April

2010

– Program chair, High Performance Computing and Simulation Symposium (HPCS 2009), San

Diego, California, April 2009


– Organizer and chair of the Workshop on Atmospheric and Oceanic Computational Science,

International Conference on Computational Science (ICCS 2009), Baton Rouge, Louisiana,

April 2009 (with A. St-Cyr and K. Evans)

– Organizer and chair of the Computational Sciences Track, ACM SAC’09, Hawaii, March 2009

(with Y. Cao)

– Program vice-chair, High Performance Computing and Simulation Symposium (HPCS 2008),

Ottawa, Ontario, Canada, April 2008

– Organizer and chair of the workshop “Computational Methods for Advancing Atmospheric

and Oceanic Sciences”, International Conference for Computational Science ICCS-2005, At-

lanta, GA, May 2005

– Organizer and chair of the Computational Sciences Track, ACM SAC’04, Nicosia, Cyprus,

March 2004

– Organizer and Chair of the Computational Sciences Track, ACM SAC’03, Melbourne, Florida,

March 2003

Leadership positions not involving paper management:

– Co-organizer and co-chair of the Practical Scientific Computing with High-order Methods

(three parts) minisymposium MS116 at the SIAM Conference on Computational science and

Engineering, abstract p. 192, Reno, Nevada, March 1–4, 2011

– Co-organizer and chair of the Innovative Time Integration Methods minisymposium at the

SIAM Conference on Computational Science and Engineering, Miami, Florida, March 2009

– Co-organizer and chair of the New Developments in Atmospheric and Ocean Data Assimi-

lation minisymposium at the SIAM Conference on Computational Science and Engineering,

Miami, Florida, March 2009

– Co-organizer and chair of the Parallel Computing in Atmospheric and Ocean Modeling min-

isymposium at the SIAM Conference on Parallel Processing, Atlanta, Georgia, March 2008.

– Co-organizer and chair of the Data Assimilation minisymposium at the SIAM Computational

Science and Engineering, Costa Mesa, CA, February 18–22, 2007

Other:

– Session chair, High Performance Computing and Simulation Symposium (HPCS 2008), Ot-

tawa, Ontario, Canada, April 2008

– Session Chair, High Performance Computing Symposium HPC-2007 Norfolk, VA, March 26-

28, 2007

– Session Chair, CP04, SIAM PP04, San Francisco, February 2004

– Session Chair, CP16 and CP29, SIAM CSE03, San Diego, February 2003


– Member of the Scientific Committee, 2nd International Conference on Air Pollution Modeling

and Simulation APMS 2001, April 9-13 2001, Paris

Proposal reviews (and/or panel membership) for research funding agencies

– National Science Foundation, U.S.

– Environmental Protection Agency, U.S. (2003)

– Engineering and Physical Sciences Research Council, U.K. (2004–2005)

– Natural Environment Research Council, U.K. (2007)

– Austrian Science Foundation, Austria (2007)

– Midwestern Association of Graduate Schools, U.S. (2000)

– Global Climate and Energy Project (GCEP), Stanford University, U.S. (2005)


Reviews for international scientific journals

– AIAA Journal

– Aerosol Science and Technology

– Applied Numerical Mathematics

– Atmospheric Environment

– Computational Geosciences

– Computer Methods in Applied Mechanics and Engineering

– Computing

– Environmental Modeling and Software

– Future Generation Computer Systems

– IEE Proc. Systems Biology

– International Journal of Computational Fluid Dynamics

– International Journal for Numerical Methods in Engineering

– Journal of Aircraft

– Journal of Computational Physics

– Journal of Environmental Management

– Journal of Geophysical Research

– Journal of Scientific Computing

– Journal of Terramechanics

– Mathematics and Computers in Simulation

– Ocean Modeling

– Optimization and Engineering

– SIAM Journal on Scientific Computing


Synergistic Activities

– Co-authored the chemical preprocessing and solution software KPP, currently used in

academic and research institutions and in ndustry in many countries;

– Developed a new Ph.D. level course Numerical Air Quality Modeling, taught for the first

time at MTU in Spring 2000;

– Developed (in cooperation) a new senior and graduate level course Bioinformatics and

Biomolecular Modeling, taught for the first time at MTU in Spring 2000.

Honors

Faculty Fellow, Advanced Study Program, National Center for Atmospheric

Research

2010

AVTT Best paper award, DETC2009-86402, ASME IDETC 2009, San Diego 2009

Virginia Tech College of Engineering Fellow 2009

2003 Professional Engineers Publishing Award from the Editorial Board of

the Journal of Multi-body Dynamics

2005

NSF CAREER award 2001

AMCS Nomination for Spriesterbacher Ph.D. Dissertation Prize, University

of Iowa

1998

AMCS Summer Merit Fellowships, University of Iowa 1993-94

Merit Fellowships (for students in top 0.5% at Polytechnic Institute

Bucharest)

1988-90

Special Prize, National Computer Programming Contest, Cluj, Romania 1988

Special Prize, National Electrotechnics Contest, Bucharest, Romania 1987

Special Prize, Polytechnic Institute Bucharest Mathematics Contest,

Bucharest

1987

Third prize, National Mechanics Contest, Iasi, Romania 1986

Programming Skills

C/C++, Fortran77/90/95, Pascal, MPI, Matlab, Mathematica, Prolog, HTML.

Mathematical software (Lapack, Harwell, SuperLU, Y12, ODE solvers, etc).

Languages

English, Romanian, Russian (reading), French (reading).


Short Term Professional Visits

National Center for Atmospheric Research 01–06/2010

Technical University Darmstadt 06/2004

Center for Mathematics and Computer Science (CWI), Amsterdam 09/1996

DIMA, Institut Francais du Petrole, Paris 10/1996

Center for Mathematics and Computer Science (CWI), Amsterdam 09/1995


Teaching

Virginia Polytechnic Institute (Assoc. Prof.):

CS–3414 Numerical Methods Spr 2005, Spr 2006 (twice),

Fall 2006, Spr 2008

CS–4104 Data and Algorithm Analysis Spr 2008

CS–4234 Parallel Computation Fall 2005, Fall 2007, Fall

2009

CS/MATH–4414 Issues in Scientific Computing Spr 2007

CS–5045 Computation for the Life Sciences Fall 2003

CS/MATH–5485 Numerical Analysis and Software Fall 2004, Fall 2005, Fall

2006

CS–5984 Foundations of Scientific Computing Spr 2004, Spr 2005

CS–6404 Data Assimilation Spr 2007

CS–6404 Inverse Modeling Spr 2008, Spr 2009

Michigan Technological University (Asst. Prof.):

Undergraduate courses: CS220–Introd. Numerical Methods with Fortran (developed

complete set of course notes), CS311–Introd. Theoretical Computer Science, CS490–

Bioinformatics and Biomolecular Modeling (taught first time ever at MTU in Spr. 2000);

CS4321–Introd. to Algorithms; CS490–Introd. to Parallel Computing;

Graduate courses: CS5331–Parallel Algorithms; CS5911–Numerical Linear Algebra; CS5911–

Iterative Methods; CSE690–Topics in Computational Science, CSE690–Atmospheric Mod-

eling (taught first time ever at MTU in Spr. 2000),

University of Iowa (TA): Quantitative Methods, Trigonometry;

Polytechnic Institute Bucharest (instructor): Numerical Methods in Electrical

Engineering, Programming with Pascal, Control Systems.


Advising

Postdoctoral/Associate Researchers Advised

Liao, Wenyuan 2003–2005 Position: Assistant Professor of Mathematics,

University of Calgary

Jardak, Mohamed 2008–2009 Position: Researcher, Center for Ocean and

Atmosphere Science, Florida State University

Undergraduate Students Advised

NSF REU (KPP numerical integration in C), Summer 2006: Eller, Paul; Jiang, Tingting;

Hobbs, Nicholas; Jacob, Don.

NSF REU (VT-TUD collaboration), Summer 2007: John Robinson (from SUNY Buffalo).

NSF REU (VT-TUD collaboration), Summer 2008: Hannes Daepp (from Vanderbilt).

Graduate Students Currently Advised

Ahn, Tae-Hyuk “Computational Methods for Biological

Simulations”

Ph.D. exp. 2011

Cioaca, Alexandru “The Impact of Observations in Large

Scale Inverse Modeling”

Ph.D. exp. 2013

Lepsa, Bianca “General Linear Methods” Leave of absence

Hong, Zhang “Adaptive Discretization Methods for a

new Generation of Earth Science Models”

Ph.D. exp. 2014

Rao, Vishwas “Advanced Time Stepping Methods” Ph.D. exp. 2016

Hays, Joe “Motion Planning for Uncertain Mechani-

cal Systems”

Ph.D. exp. 2011


Graduated Ph.D. Students

6. Alexe, Mihai “Adjoint-based space-time adaptive solution

algorithms for sensitivity analysis and inverse

problems”

Ph.D. March 2011

(Position: Geophysical application engineer, Seismic process-

ing group, Shell Global Solutions International B.V., Rijswijk,

Nederland)

5. Singh, Kumaresh “Efficient Computational Tools for Varia-

tional Data Assimilation and Information

Content Estimation” (main advisor; co-

advisor W. Feng)

Ph.D. Aug. 2010

(Position: Analyst, Deutsche Bank, Carry, North Carolina

4. Linford, John “Accelerating Atmospheric Modeling Through

Emerging Multi-core Technologies”

Ph.D. May 2010

(Position: Real-time systems programmer, Northrop Grum-

man Electronic Systems, Baltimore, Maryland.)

3. Blanchard, Em-

manuel

Polynomial Chaos Approaches to Parameter

Estimation and Control Design for Mechani-

cal Systems with Uncertain Parameters (main

advisor; co-advisor C. Sandu)

Ph.D. May 2010

(Position: N/A)

2. Cheng, Haiyan “Uncertainty Quantification and Uncertainty

Reduction Techniques for Large Scale Simula-

tions”

Ph.D. July 2009

(Position: Assistant Professor of Computer Science,

Willamette University, Salem, Oregon.)

1. Constantinescu,

Emil Mihai

“Adaptive Numerical Methods for Large Scale

Simulations and Data Assimilation”

Ph.D. August 2008

(Position: Computer Scientist and 2008-2010 Wilkinson fel-

low, Mathematics and Computer Science division, Argonne

National Laboratory, Chicago, Illinois.)

Graduated M.S. Students


Gou, Tianyi “Computational Tools for Chemical Data As-

similation with CMAQ”

M.S. Jan. 2010

(Position: Computer Scientist, Qualcomm,

La Jolla, California)

Eller, Paul “Development and Acceleration of Parallel

Chemical Transport Models”

M.S. Aug. 2009

(Position: Computer Scientist, Information

Technology Laboratory, U.S. Army, Missis-

sippi)

Zhang, Lin “Large-Scale Simulations Using First and

Second Order Adjoints with Applications in

Data Assimilation”

M.S. 2007

(Position: Computer Scientist, Microsoft,

Seattle, Washington)

Srivastava, Anurag “Stabilized Explicit Time Integration for Par-

allel Air Quality Models”

M.S. 2006

(Position: Analyst at J.P. Morgan)

Belwal, Chaitanya “High Resolution Air Quality Simulations” M.S. 2003

(Position: Computer Scientist, EPCON,

Houston, Texas)

Borden, Christian “Numerical Modeling of Aerosols” M.S. 2003

(Position: Model Developer, Signature Re-

search, Calumet, Michigan)

Sun, Guowei “Community Air Quality Models” M.S. 2003

Miehe, Philipp “Parallelization of Air Quality Models on

Structured Grids”

M.S. 2001

(Position: Analyst at Hannover Reinsurance

AG in Hannover, Germany)

Gopala, Kalpana “Analysis of the 1994 Pentium Bug” M.S. 2000

(Position: Computer Scientist, Guidant, Seat-

tle, Washington)

Peechu, Sampath “Parallel Implementation of 3D AQMs with

Minimal Communication Costs”

M.S. 1999

Other Graduate Students Advised

Liu, Zheng “Discrete Adjoints for Hyperbolic Systems” Grad. 2004-5

Miehe, Philipp “Chemical Data Assimilation” Grad. 2005-7

Dean, Ryan “Implicit Time-Stepping Methods for Flow

Simulations”

Grad. 2010


Advisee Honors and Awards

– Linford, John: Outstanding Ph.D. dissertation award, Computer Science Department, Vir-

ginia Tech, 2010.

– Blanchard, Emmanuel: Mechanical Engineering outstanding Ph.D. student (nominated by

ME for CoE outstanding Ph.D. student award), 2010;

– Ahn, Ted: 2010 summer fellowship at Sandia National Laboratory.

– Alexe, Mihai: 2010 Givens summer fellowship at Argonne National Laboratory, Mathematics

and Computer Science Division.

– Cioaca, Alexandru: 2010 Givens summer fellowship at Argonne National Laboratory, Math-

ematics and Computer Science Division.

– Zhang, Hong: 2010 SIParCS summer fellowship at the Institute for Mathematics Applied to

Geosciences, National Center for Atmospheric Research.

– Dean, Ryan: 2010 SIParCS summer fellowship at the Institute for Mathematics Applied to

Geosciences, National Center for Atmospheric Research.

– Alexe, Mihai: 2009 Givens summer fellowship at Argonne National Laboratory, Mathematics

and Computer Science Division.

– Constantinescu, Emil Mihai: 2008–2010 Wilkinson fellowship at Argonne National Labora-

tory, Mathematics and Computer Science Division.

– Eller, Paul: 2008–2011 Science, Mathematics, and Research for Transformation (SMART)

Defense Scholarship. Sponsored by U.S. Department of Defense (DoD). Selected from 2,100

applications.

– Alexe, Mihai: Invited participant to the Rocky Mountain Mathematics Consorium Summer

school on parallel numerical methods for PDEs. Laramie, WY, July 2008.

– Linford, John: CESRI fellowship (summer 2007 travel to Juelich High Performance Comput-

ing Center), 2007.

– Linford, John: 2007–2010 National Defense Science and Engineering Graduate (NDSEG) fel-

lowship. Sponsored by U.S. Department of Defense (DoD). Selected from 3,400 applications.

– Linford, John: Third place at the VT GSA poster competition, April 2007.

– Cheng, Haiyan: Best speaker award, SIAM student VT chapter, April 2007.

– Cheng, Haiyan: Invited participant to the Summer graduate workshop on data assimilation

for the carbon cycle. San Diego, CA, July 2006. Boulder, CO, July 2007.

– Constantinescu, Emil Mihai: 2005 Givens summer fellowship, Argonne National Laboratory,

Mathematics and Computer Science Division.


Research Funding

Current:

1. Title:“Stochastic Models of Cell Cycle Regulation in Eukaryotes”. Sponsor: NIGMS/NIH

5 ROI GM078989. PI: J.J. Tyson. Co-PIs: L.T. Watson, C. Shaffer, A. Sandu, M. Paul,

H. Dankowitz, Y. Cao. Total Funding: $1,290,419. Supplemental Funding, 2009:

$213,620. Supplemental CS Funding, 2010: $143,363 (total CS funding as of Oct 2010

is $519,624 for Watson, Sandu, Shaffer) Sandu’s Portion: $105,283 (7%) or $129,906 (0.25

of total CS funding). Period: 09/2006–08/2010, extended to 08/2011.

2. Title: “Collaborative Research: A Multiscale Unified Simulation Environment for Geo-

scientific Applications”. Sponsor: NSF OCI-0904397. PI: A. St-Cyr (NCAR). Co-PIs:

A. Sandu, D. Mavriplis (U. Wyoming). Total Funding: $1,000,000. Sandu’s Portion:

$238,996. Period: 04/2009–03/2013.

3. Title: “CIF: General Linear Time-stepping Methods for Large Scale Simulations”. Spon-

sor: NSF CCF-0916493. PI: A. Sandu. Co-PIs: N/A. Total Funding: $312,314.

Sandu’s Portion: $312,314. Period: 08/2009-08/2012.

4. Title: “Collaborative Research: A Computational Framework for Assessing the Observation

Impact in Air Quality Forecasting”. Sponsor: NSF DMS–0915047. PI: A. Sandu. Co-PIs:

D. Daescu (Portland State). Total Funding: $633,018. Sandu’s Portion: $418,616.

Period: 08/2009–08/2014.

Pending:

• Title: “Small: AF: Multirate Time Integration Algorithms for Large Scale Evolutionary

PDE Models”. Sponsor: NSF CCF/AF. PI: A. Sandu. Co-PIs: N/A. Total Funding:

$412,016. Sandu’s Portion: 100%. Period: 08/2010-08/2013.

• Title: “Workshop on Optimization of Systems Governed by Differential Equations”. Spon-

sor: NSF 7115525. PI: A. Sandu. Co-PIs: N/A. Total Funding: $27,757. Sandu’s

Portion: 100%. Period: 2011.

Past:

1. Title:“Solution of Inverse Problems with Adaptive Models” Sponsor: NSF CCF–0635194.

PI: A. Sandu. Co-PIs: I.M. Navon (FSU). Total Funding: $350,000. Sandu’s Portion:

$186,143. Period: 01/2007–12/2009, extended to 2010.


2. Title: “HokieSpeed: a Heterogeneous Supercomputer”. Sponsor: NSF. PI: W. Feng Se-

nior personnel: A. Sandu et al. Total Funding: $2,000,000. Sandu’s Portion: N/A.

Period: 2010–2012.

3. Title:“Development of a Sensor-web Operations Explorer” Sponsor: NASA ROSES-2005.

PI: M. Lee. Co-PIs: K. Bowman, A. Sandu, C.F. Miller. Total Funding: $500,000.

Sandu’s Portion: $211,000. Period: 08/2006–08/2009.

4. Title: “Multirate Time Integration Algorithms for Adaptive Simulations of PDEs”. Spon-

sor: NSF CCF–0515170. PI: A. Sandu. Co-PI(s): N/A. Total Funding: $180,000.

Sandu’s Portion: $180,000. Period: 08/2005–08/2008, extended to 08/2009.

5. Title:“Virginia Institute for Performance Engineering and Research – Part II”. Sponsor:

NASA. PI: M. Ahmadian. Co-PI(s): C. Sandu, P. Kachroo, A. Sandu, C. Holton. Total

Funding: $2,770,000. Sandu’s Portion: $138,500 (5%). Period: 04/2007–12/2009.

6. Title:“H98: Air Quality Modeling of TexAQS-II Episodes with Data Assimilation” Spon-

sor: HARC/TCEQ. PI: D. Byun (U. Houston). Co-PIs: A. Sandu, D. Cohan (Rice U.),

T. Ho (Lamar U.). Total Funding: $390,000. Sandu’s Portion: $62,000. Period:

04/2008–08/2009

7. Title:“MISER: A High-Performance, Power-Aware Cluster” Sponsor: NSF CNS–0709025.

PI:K. Cameron. Co-PIs: A. Sandu, D. Nikolopoulos. Total Funding: $450,000. Sandu’s

Portion: $150,000. Period: 07/2007–07/2008

8. Title:“Virginia Institute for Performance Engineering and Research – Part I”. Sponsor:

NASA. PI: M. Ahmadian. Co-PI(s): C. Sandu, P. Kachroo, A. Sandu, C. Holton. Total

Funding: $2,860,000. Sandu’s Portion: $143,000 (5%). Period: 09/2005–03/2007.

9. Title: “CAREER: Development of Computational Methods for the New Generation of Air

Quality Models”. Sponsor: NSF Faculty Early Career Development (CAREER) Award

ACI-0413872 (previously ACI-0093139). PI: A. Sandu. Co-PI(s): N/A. Total Funding:

$325,732 from NSF (plus $153,515 from MTU/VT cost share). Sandu’s Portion: $325,732

from NSF (plus $153,515 from MTU/VT cost share). Period: 08/2001–07/2006.

10. Title:“H59: Improving Air Pollution Emissions using Data Assimilation Techniques”. Spon-

sor: Houston Advanced Research Center (HARC). PI: A. Sandu. Co-PI(s): N/A. Total

Funding: $100,000. Sandu’s Portion: $100,000. Period: 01/2006–12/2006.

11. Title:“ITR AP&IM: Development of a General Computational Framework for the Optimal

Integration of Atmospheric CTMs and Measurements Using Adjoints”. Sponsor: NSF-

ITR AP&IM 0205198. PI: G.R. Carmichael. Co-PI(s): A. Sandu, J. Seinfeld, P. Hess, T.

Anderson, D. Daescu. Total Funding: $2,300,000. Sandu’s Portion: $451,711. Period:

08/2002–07/2007.


12. Title:“REU Site: Automotive Technologies at the Technische Universitaet Darmstadt and

Virginia Tech”. Sponsor: NSF REU 0552832. PI: J.H. Bohn. Senior personnel: M.

Ahmadian, C. Sandu, A. Sandu, K. Thole, K. Davis, R. Anderl, D. Tatar, J. Ferris, and S.

Southward. Total Funding: $. Sandu’s Portion: N/A. Period: 08/2006–08/2007.

13. Title:“A Chemical Data Assimilation Test Bed for the Interpretation and Analysis of the

2004 NEAQS/ITCT Observations”. Sponsor: NOAA. PI: G.R. Carmichael. Co-PI(s):

A. Sandu. Total Funding: $250,000. Sandu’s Portion: $127,000. Period: 08/2005–

07/2007.

14. Title:“NSF-REU/CAREER: Development of Computational Methods for the New Genera-

tion of Air Quality Models”. Sponsor: NSF CCF–0530393. PI: A. Sandu. Co-PI(s): N/A.

Total Funding: $6,300. Sandu’s Portion: $6,300. Period: 2005–2006.

15. Title:“Modeling Air Pollution in East Texas”. Sponsor: Houston Advanced Research Cen-

ter (HARC). PI: D. Byun (U. Houston). Co-PI(s): A. Sandu. Total Funding: $500,000.

Sandu’s Portion: $30,000. Period: 01/2006–12/2006.

16. Title: “International Travel Supplement (to visit Technical University Darmstadt)”. Spon-

sor: Virginia Tech. PI: A. Sandu. Co-PI(s): N/A. Total Funding: $2,250. Sandu’s

Portion:$2,250. Period: June 2004.

17. Title: “NUE: Nano-integration- Exploring Nano-Science, Applications, and Implications

with Undergraduates at MTU”. Sponsor: NSF SES 0304439. PI: J.A. Jaszczak. Co-PI(s):

A. Sandu et al. Total Funding: $100,000. Sandu’s Portion: N/A. Period: 2003–2004.

18. Title: Faculty Scholarship Grant. Sponsor: Michigan Technological University, Fund

R00861, Index E29716. PI: A. Sandu. Co-PI(s): N/A. Total Funding: $900. Sandu’s

Portion:$900. Period: 2000.

19. Title: Faculty Scholarship Grant. Sponsor:Michigan Technological University, Fund R00817,

Index E29687. PI: A. Sandu. Co-PI(s): N/A. Total Funding: $1,750. Sandu’s Por-

tion:$1,750. Period: 1999.


Publications

Theses and Dissertations

1. Ph.D. Dissertation in Applied Mathematical and Computational Sciences

Title: “Numerical Aspects of Air Quality Modeling”

Advisors: dr. Florian A. Potra, dr. Gregory R. Carmichael

The University of Iowa, 1997

2. M.S. Thesis in Computer Science

Title: “Sensitivity Analysis of ODE via Automatic Differentiation”

Advisors: dr. Arthur Fleck, dr. Florian A. Potra

The University of Iowa, 1997

3. Electrical and Computer Engineering Diploma Thesis

Title: “Optimal Regulator Design Using H∞ Techniques”

Advisor: dr. Vlad Ionescu

Polytechnic Institute Bucharest, Romania, 1990

Software

1. KPP - The Kinetic PreProcessor (with V. Damian-Iordache, G.R. Carmichael, F.A. Potra

and M. Damian-Iordache). A compiler processing chemical equations and deriving Fortran77,

Fortran90, C, and Matlab simulation code for chemical systems.

• Information and Code: http://www.cs.vt.edu/~asandu/Software/Kpp

• Currently used in academic and research institutions and in industry in United States,

Germany, The Netherlands, France, Italy, Spain, etc.

2. LN algorithm (stochastic multi-step molecular dynamics) implemented in the popular CHARMM

(Chemistry at Harvard Molecular Mechanics) package. LN is now an integral part of CHARMM

versions 27 and above.

• CHARMM home: http://www.lobos.nih.gov/Charmm

• Documentation (mts.doc): http://www.lobos.nih.gov/Charmm/c27n2/mts.html

3. PAQMSG: A Parallelization Library for Air Quality Models on Structured Grids (with P.

Miehe). An MPI-based communication library for the distribution, gathering, and reparti-

tioning of data for several domain-decomposition strategies.

• Information and Code: http://www.cs.vt.edu/~asandu/Software/Parallel

4. AeroSolve: a Software Package for the Simulation of Aerosol Dynamics.


• Information and Code: http://www.cs.vt.edu/~asandu/Software/AeroSolve

5. DENSERKS: A suite of Fortran sensitivity solvers using continuous, explicit Runge-Kutta

schemes (with M. Alexe).

• Information and Code: http://www.cs.vt.edu/~asandu/Software/DENSERKS

6. CMAQ-v4.5 ADJOINT. CMAQ v4.5 (the Environmental Protection Agency’s official air qual-

ity model) endowed with adjoint and data assimilation capabilities (with K. Singh, A. Hakami,

J. Seinfeld, P. Percell, D. Byun).

• Information and Code: http://www.cs.vt.edu/~asandu/Software/CMAQ_ADJ

7. GEOS-CHEM ADJOINT. GEOS-CHEM endowed with adjoint and data assimilation capa-

bilities (with K. Singh, D. Henze, et al.).

• Information and Code: http://www.cs.vt.edu/~asandu/Software/GC_ADJ

8. FATODE. A library for Forward, Adjoint, and Tangent linear integration of stiff ODEs (with

H. Zhang).

• Information and Code: http://www.cs.vt.edu/~asandu/Software

Course Notes

9. A. Sandu: “Introduction to Fortran 95 and Numerical Computing”,

http://www.cs.vt.edu/~asandu/Deposit/Fortran95_notes.pdf.

10. A. Sandu: “Introduction to Computer Arithmetic”,

http://www.cs.vt.edu/~asandu/Deposit/comp_arithm.pdf.

Refereed Book Chapters

1. A. Sandu: “Solution of inverse ODE problems using discrete adjoints”, in Large Scale Inverse

Problems and Quantification of Uncertainty. L. Biegler, G. Biros, O. Ghattas, M. Heinken-

schloss, D. Keyes, B. Mallick, L. Tenorio, B. van Bloemen Waanders, and K. Willcox, editors.

John Wiley & Sons, pp. 345–364, 2010. 372 p., ISBN: 978-0-470-69743-6.

2. A. Sandu, T.F. Chai, and G.R. Carmichael: “Integration of Models and Observations: A

Modern Paradigm for Air Quality”, inModelling of Pollutants in Complex Environments, Vol.

2, Advanced Topics in Environmental Science series. G. Hanrahan editor. ILM Publications,

pp. 419–434, 2010. 468 p., ISBN: 978-1-906799-01-4.

3. A. Sandu : “Reverse Automatic Differentiation of Linear Multistep Methods”, in Advances in

Automatic Differentiation, Lecture Notes in Computational Science and Engineering series,

Vol. 64. C.H. Bischof, H.M. Bucker, P. Hovland, U. Naumann, and J. Utke, editors. Springer,

pp. 1–12, 2008. 370 p. 111 illus. ISBN: 978-3-540-68935-5.


4. A. Sandu: “Time-Stepping Methods that Favor Positivity for Atmospheric Chemistry Model-

ing”, in IMA Volume 130: Atmospheric Modeling. D.P. Chock and G.R. Carmichael editors,

Springer-Verlag, pp. 21–38, 2002.

5. G.R. Carmichael, A. Sandu, C.H. Song, S. He, M. Phadnis, D. Daescu, V. Damian-Iordache,

and F.A. Potra: “Computational Challenges of Modeling Interactions between Aerosol and

Gas Phase Processes”, in NATO Advanced Study Institute on Computational Challenges in

Air Pollution Modeling. Z. Zlatev editor, pp. 99-136, 1999.

6. G.R. Carmichael, A. Sandu, F.A. Potra, V. Damian-Iordache, and M. Damian-Iordache: “The

Current State and the Future Directions in Air Quality Modeling”, in Modeling and Simula-

tion of Complex Environmental Problems, A. Sydow, G.R. Carmichael, and G. Korn, editors,

Springer-Verlag, pp. 75–105, 1996.

7. G.R. Carmichael, A. Sandu, F.A. Potra, and V. Damian-Iordache: “An Overview of Sen-

sitivity Analysis for Atmospheric Chemistry Models via Automatic Differentiation”, in Air

Pollution IV - Monitoring, Simulation and Control. B. Caussade, H. Power, and C.A. Breb-

bia, editors, Computational Mechanics Publications, Southampton, Boston, pp. 71–80, 1996.


Journal Impact Factor (ISI Web of Knowledge, Journal Citation Reports)

Journal JCR IF: 1/5 yrs

Aerosol Science and Technology (2007) 2.350/2.230

Applied Mathematics and Computation (2008) 0.961/1.124

Applied Numerical Mathematics (2008) 0.952/1.065

Atmospheric Chemistry and Physics (2007) 4.865/4.543

Atmospheric Environment (2007) 2.549/3.320

Computers and Mathematics with Applications (2008) 0.997/1.049

Computational Geosciences (2007) 0.893/1.259

Computers and Chemical Engineering (2007) 1.238/1.815

Engineering Computations (2008) 0.488/0.758

Environmental Management and Health (2007) 1.240/1.670

Environmental Modeling and Software (2007) 2.099/2.217

Environmental Science and Technology (2007) 4.363/4.930

IEEE Transactions on Parallel and Distributed Systems (2008) 1.916/2.374

International Journal for Numerical Methods in Fluids (2007) 0.712/1.017

International Journal of Computer Mathematics (2007) 0.423/0.451

International Journal of Heavy Vehicle Systems (2007) 0.051/0.061

International Journal of Systems Science (2007) 0.492/0.549

Journal of Computational and Applied Mathematics (2008) 1.048/1.138

Journal of Computational Physics (2007) 2.372/2.820

Journal of Dynamic Systems Measurement and Control (2008) 0.753/0.970

Journal of Geophysical Research (2007) 2.953/3.402

Journal of Multibody Dynamics (2007) 0.309/0.368

Journal of Scientific Computing (2007) 1.293/NA

Journal of Supercomputing (2008) 0.615/0.604

Monthly Weather Review (2007) 2.267/3.061

Multibody System Dynamics (2007) 0.593/0.881

Quarterly Journal of the Royal Meteorological Society (2007) 2.893/2.805

SIAM Journal on Scientific Computing (2007) 1.784/2.231

Tellus A – Dynamic Meteorology and Oceanography (2008) 1.965/2.359


Journal Papers under Review

1. J. Hays, A. Sandu, C. Sandu, and D. Hong: “Motion Planning of Uncertain Ordinary Dif-

ferential Equation Systems”. Submitted to Journal of Dynamic Systems Measurement And

Control – Transactions of the ASME, March 2011.

2. A. Sandu and H. Cheng*: “A Subspace Approach to Data Assimilation and New Opportu-

nities for Hybridization”.

3. A. Cioaca*, M. Alexe, and A. Sandu: “Second Order Adjoints for Solving PDE-Constrained

Optimization Problems”. Submitted to Optimization Methods and Software, Oct. 2010.

4. M. Alexe* and A. Sandu: “Space-time Adaptive Solution of Inverse Problems with the Dis-

crete Adjoint Method”. Submitted to Inverse Problems, Nov. 2010.

5. T.-H. Ahn, A. Sandu, L.T. Watson, C.A. Shaffer, Y. Cao, and W.T. Baumann: “Parallel

Load Balancing Strategies for Ensembles of Stochastic Biochemical Simulations”. Submitted

to IEEE TPDS, Dec. 2010.

6. E.M. Constantinescu* and A. Sandu: “Extrapolated Multirate Methods for Differential Equa-

tions with Multiple Time Scales”. Submitted to Journal of Scientific Computing, Oct. 2010.

7. T.Y. Gou* and A. Sandu: “Continuous versus Discrete Advection Adjoints in Chemical Data

Assimilation with CMAQ”. Submitted to Atmospheric Environment, Jan. 2011.

8. K. Singh and A. Sandu: “Variational Chemical Data Assimilation with Approximate Ad-

joints”. Submitted to Computers & Geosciences, Jan. 2011.

Journal Papers

1. K. Singh*, M. Jardak*, A. Sandu, K. Bowman, M. Lee, and D. Jones: “Construction of Non-

diagonal Background Error Covariance Matrices for Global Chemical Data Assimilation”.

Geoscientific Model Development, Vol. 4, pp. 299–314, 2011.

2. J.C. Linford*, J. Michalakes, M. Vaccharajani, and A. Sandu: “Automatic Generation of

Multi-Core Chemical Kernels”. IEEE Transactions on Parallel and Distributed Systems, Vol.

22, Issue 1, pp. 119–131, 2011.

3. A. Sandu and P. Miehe*: “Forward, Tangent Linear, and Adjoint Runge Kutta Methods in

KPP–2.2 for Efficient Chemical Kinetic Simulations”. International Journal of Computer

Mathematics, Vol. 87, Issue 11, pp. 2458–2479, September 2010.


4. E.M. Constantinescu* and A. Sandu: “Optimal Explicit Strong Stability Preserving General

Linear Methods”. SIAM Journal on Scientific Computing, Vol. 32, Issue 5, pp. 3130–3150,

2010.

5. E. Blanchard*, A. Sandu, and C. Sandu: “PSM: A Polynomial Chaos-Based Kalman Filter

Approach for Parameter Estimation of Mechanical Systems”. Journal of Dynamic Systems

Measurement and Control, Volume 132, Issue 6, 061404 (18 pages), doi:10.1115/1.4002481,

2010.

6. J.C. Linford* and A. Sandu: “Scalable Heterogeneous Parallelism for Atmospheric Modeling

and Simulation”. Journal of Supercomputing, pp. 1–28, doi: 10.1007/s11227-010-0380-8,

2010. Online: http://dx.doi.org/10.1007/s11227-010-0380-8

7. E.M. Constantinescu* and A. Sandu: “Extrapolated Implicit-Explicit Time Stepping”. SIAM

Journal on Scientific Computing, Vol. 31, Issue 6, pp. 4452–4477, doi:10.1137/080732833,

2010.

8. H. Cheng*, M. Jardak*, M. Alexe*, and A. Sandu: “A Hybrid Approach to Estimating Error

Covariances in Variational Data Assimilation”. Tellus Series A – Dynamic Meteorology and

Oceanography, Vol. 62, Issue A, pp. 288–297, 2010.

9. M. Alexe* and A. Sandu: “On the Discrete Adjoints of Variable Step Time Integrators”.

Journal of Computational and Applied Mathematics, Vol. 233, Issue 4, pp. 1005–1020, 2009.

10. E. Blanchard*, A. Sandu, and C. Sandu: “Polynomial Chaos Based Parameter Estimation

Methods for Vehicle Systems”. Journal of Multi-body Dynamics, Vol. 224, pp. 59–81,

doi:10.1243/14644193JMBD204, 2010.

11. T. Chai, G.R. Carmichael, Y. Tang, and A. Sandu: “Regional NOX emission inversion

through a four-dimensional variational approach using SCIAMACHY tropospheric NO2 col-

umn observations”. Atmospheric Environment, Vol. 43, Issue 32, pp. 5046–5055, doi:

10.1016/j.atmosenv.2009.06.052, 2009.

12. P. Eller*, K. Singh*, A. Sandu, K. Bowman, D.K. Henze, and M. Lee: “Implementation

and Evaluation of an Array of Chemical Solvers in a Global Chemical Transport Model”.

Geophysical Model Development, Vol. 2, pp. 1–7, 2009.

13. H. Cheng* and A. Sandu: “Efficient Uncertainty Quantification with the Polynomial Chaos

Method for Stiff Systems”. Computers and Mathematics with Applications, Vol. 79, Issue 11,

p. 3278–3295, 2009.

14. E. Blanchard*, A. Sandu, and C. Sandu: “Parameter Estimation for Mechanical Systems

via an Explicit Representation of Uncertainty”. Engineering Computations. International

Journal for Computer-Aided Engineering and Software, Vol. 26, Issue 5, pp. 541–569, doi:

10.1108/02644400910970185, 2009.


15. H. Cheng* and A. Sandu: “Uncertainty Quantification in 3D Air Quality Models using Poly-

nomial Chaoses”. Environmental Modeling and Software, Vol. 24, Issue 8, pp. 917–925,

doi:10.1016/j.envsoft.2008.12.005, 2009.

16. M. Alexe* and A. Sandu: “Forward and adjoint sensitivity analysis with continuous explicit

Runge-Kutta schemes”. Applied Mathematics and Computation, Vol. 208, No. 2, pp. 328–

346, doi:10.1016/j.amc.2008.11.035, 2009.

17. A. Sandu and E.M. Constantinescu*: “Multirate Adams Methods for Hyperbolic Equa-

tions”. Journal of Scientific Computing, Vol. 38, No. 2, pp. 229–249, doi:10.1007/

s10915-008-9235-3, 2009.

18. L. Zhang*, E.M. Constantinescu*, A. Sandu, Y. Tang, T. Chai, G.R. Carmichael, D. Byun,

E. Olaguer: “An Adjoint Sensitivity Analysis and 4D-Var Data Assimilation Study of Texas

Air Quality”. Atmospheric Environment, Vol. 42, Issue 23, pp. 5787–5804, 2008.

19. A. Sandu and L. Zhang*: “Discrete Second Order Adjoints in Atmospheric Chemical Trans-

port Modeling”. Journal of Computational Physics, Vol. 227, Issue 12, pp. 5949–5983,

doi:10.1016/j.jcp.2008.02.011, 2008.

20. E.M. Constantinescu*, A. Sandu, and G.R. Carmichael: “Modeling Atmospheric Chemistry

and Transport with Dynamic Adaptive Resolution”. Computational Geosciences, Vol. 12,

No. 2, p. 133–151, doi:10.1007/s10596-007-9065-7, 2008.

21. Z. Liu* and A. Sandu: “Analysis of Discrete Adjoints of Numerical Methods for the Advection

Equation”. International Journal for Numerical Methods in Fluids, Vol. 56, Issue 7, pp. 769–

803, doi:10.1002/fld.1550, 2008.

22. C. Sandu, A. Sandu, B. Chan, and M. Ahmadian: “A Response Spectral Decomposition

Approach for the Control of Nonlinear Mechanical Systems”. International Journal of Heavy

Vehicle Systems, Vol. 15, No 1, pp. 27-52, 2008.

23. G.R. Carmichael, A. Sandu, T. Chai, D. Daescu, E.M. Constantinescu*, and Y. Tang: “Pre-

dicting Air Quality: Improvements through Advanced Methods to Integrate Models and Mea-

surements”. Journal of Computational Physics (Special issue on predicting weather, climate

and extreme events), Vol. 227, Issue 7, pp. 3540–3571, 2008.

24. A. Hakami, D.K. Henze, J.H. Seinfeld, K. Singh*, A. Sandu, S. Kim, D. Byun, and Q. Li:

“The Adjoint of CMAQ”. Environmental Science and Technology, Vol. 41, No. 22, p. 7807–

7817, doi:10.1021/es070944p, 2007.

25. E.M. Constantinescu* and A. Sandu: “Multirate Timestepping Methods for Hyperbolic Con-

servation Laws”. Journal of Scientific Computing, Vol. 33, Issue 3, p. 239–278, doi:

10.1007/s10915-007-9151-y, 2007.


26. E.M. Constantinescu*, T. Chai, A. Sandu, and G.R. Carmichael: “Autoregressive Models of

Background Errors for Chemical Data Assimilation”. Journal of Geophysical Research, Vol.

112, D12309, doi:10.1029/2006JD008103, 2007.

27. E.M. Constantinescu*, A. Sandu, T. Chai, and G.R. Carmichael: “Ensemble-based Chemical

Data Assimilation. I: General Approach”. Quarterly Journal of the Royal Meteorological

Society, Vol. 133, Issue 626, pp. 1229–1243, Online ISSN: 1477-870X, Print ISSN: 0035-9009,

July 2007 Part A.

28. E.M. Constantinescu*, A. Sandu, T. Chai, and G.R. Carmichael: “Ensemble-based Chemical

Data Assimilation. II: Covariance Localization”. Quarterly Journal of the Royal Meteorolog-

ical Society, Vol. 133, Issue 626, pp. 1245–1256, Online ISSN: 1477-870X, 14 pages, Print

ISSN: 0035-9009, July 2007 Part A.

29. T. Chai, G.R. Carmichael, Y. Tang, A. Sandu, M. Hardesty, P. Pilewskie, S. Whitlow, E.V.

Browell, M.A. Avery, V. Thouret, P. Nedelec, J.T. Merrill, and A.M. Thomson: “Four Di-

mensional Data Assimilation Experiments with ICARTT (International Consortium for At-

mospheric Transport and Transformation) Ozone Measurements”. Journal of Geophysical

Research, Vol. 112, D12S15, 18 pages, doi:10.1029/2006JD007763, 2007.

30. E.M. Constantinescu*, A. Sandu, T. Chai, and G.R. Carmichael: “Investigation of Ensemble-

based Chemical Data Assimilation in an Idealized Setting”. Atmospheric Environment, Vol.

41, Issue 1, pp. 18–36, 2007.

31. A. Hakami, J.H. Seinfeld, T. Chai, Y. Tang, G.R. Carmichael, and A. Sandu: “Adjoint Sensi-

tivity Analysis of Ozone Non-attainment over the Continental United States”. Environmental

Science and Technology, Vol. 40, No. 12, pp. 3855-3864, doi:10.1021/es052135g, 2006.

32. C. Sandu, A. Sandu, and L. Li: “Modeling of Stochastic Terrain Profiles and Soil Parameters”,

SAE 2005 Transactions Journal of Commercial Vehicles, Vol. V114-2, Paper number 2005-

01-3559, pp. 211–220, Feb. 2006.

33. T. Chai, G. R. Carmichael, A. Sandu, Y. Tang, and D.N. Daescu: “Chemical data assimilation

of Transport and Chemical Evolution over the Pacific (TRACE-P) aircraft measurements”,

Journal of Geophysical Research, Vol. 111, D02301, 18 pages, doi:10.1029/2005JD005883,

2006.

34. A. Sandu and R. Sander: “Simulating Chemical Kinetic Systems in Fortran90 and Matlab

with the Kinetic PreProcessor KPP-2.1”. Atmospheric Chemistry and Physics, Vol. 6, pp.

187–195, SRef-ID: 1680-7324/acp/2006-6-187, 2006.

35. A. Sandu: “Piecewise Polynomial Solutions of Aerosol Dynamics”, Aerosol Science and Tech-

nology, Vol. 40, pp. 1–13, 2006.


36. W. Liao*, A. Sandu, G.R. Carmichael, and T. Chai: “Total Energy Singular Vector Analysis

for Atmospheric Chemical Transport Models”. Monthly Weather Review, Vol. 134, No. 9,

pp. 2443–2465, 2006.

37. A. Sandu, C. Sandu, and M. Ahmadian: “Modeling Multibody Dynamic Systems With Un-

certainties. Part I: Theoretical and Computational Aspects”. Multibody System Dynamics,

Vol. 15, No. 4, pp. 369–391, doi:10.1007/s11044-006-9007-5, 2006.

38. C. Sandu, A. Sandu, and M. Ahmadian: “Modeling Multibody Dynamic Systems With Un-

certainties. Part II: Numerical Applications”. Multibody System Dynamics, Vol. 15, No. 3,

pp. 245–266, doi:10.1007/S11044--9008--4, 2006.

39. A. Hakami, D.K. Henze, J.H. Seinfeld, T. Chai, Y. Tang, G.R. Carmichael, and A. Sandu:

“Adjoint Inverse Modeling of Black Carbon During ACE-Asia”. Journal of Geophysical Re-

search, Vol. 110, No. D14, D14301, doi:10.1029/2004JD005671, 25 pages, 2005.

40. A. Sandu, W. Liao*P, G.R. Carmichael, D.K. Henze, and J.H. Seinfeld: “Inverse Modeling

of Aerosol Dynamics using Adjoints – Theoretical and Numerical Considerations”, Aerosol

Science and Technology, Vol. 39, pp. 1–18, doi:10.1080/02786820500182289, 2005.

41. A. Sandu, D.N. Daescu, G.R. Carmichael, and T. Chai: “Adjoint Sensitivity Analysis of

Regional Air Quality Models”, Journal of Computational Physics, Vol. 204, pp. 222–252,

2005.

42. D.K. Henze, J.H. Seinfeld, W. Liao*, A. Sandu, G.R. Carmichael: “Inverse Modeling of

Aerosol Dynamics: Condensational Growth”, Journal of Geophysical Research, Vol. 109, No.

D14, D14201, doi:10.1029/2004JD004593, 14 pages, July 2004.

43. Y. Tang, G.R. Carmichael, J.H. Seinfeld, D. Dabdub, R.J. Weber, B. Huebert, A.D. Clarke,

S.A. Guazzotti, D.A. Sodeman, K.A. Prather, I. Uno, J.H. Woo, D.G. Streets, P. K. Quinn,

J.E. Johnson, C.H. Song, A. Sandu, R.W. Talbot, and J.E. Dibb: “Three-dimensional Studies

of Aerosol Ions and Their Size Distribution in East Asia During Spring 2001”. Journal of Geo-

physical Research - Atmospheres, Vol. 109, No. D19, D19S23, doi:10.1029/2003JD004201,

32 pages, July 2004.

44. Y. Tang, G.R. Carmichael, L.W. Horowitz, I. Uno, J.H. Woo, D.G. Streets, D. Dabdub, G.

Kurata, A. Sandu, J. Allan, E. Atlas, F. Flocke, L.G. Huey, R.O. Jakoubek, D.B. Millet, D.D.

Parrish, P.K. Quinn, J.M. Roberts, T.B. Ryerson, E. Williams, J.B. Nowak, D. Worsnop, A.

Goldstein, S. Donnelly, S. Schauffler, V. Stroud, K. Johnson, M.A. Avery, H.B. Singh, and

E.C. Apel: “Multi-scale Simulations of Tropospheric Chemistry in the Eastern Pacific and

US West Coast during Spring 2002”, Journal of Geophysical Research - Atmospheres, Vol.

109, No. D23, D23S11, doi:10.1029/2004JD004513, 25 pages, August 2004.


45. A. Sandu, D. Negrut, E. Haug, F.A. Potra, and C. Sandu: “A Rosenbrock-Nystrom State

Space Implicit Method for the Dynamic Analysis of Mechanical Systems: I – Theoretical

Development”. Journal of Multibody Dynamics, Vol. 217, No. K4, pp. 263–272, 2003.

46. D. Negrut, A. Sandu, E. Haug, F.A. Potra, and C. Sandu: “A Rosenbrock-Nystrom State

Space Implicit Method for the Dynamic Analysis of Mechanical Systems: II – The Method

and Numerical Results”. Journal of Multibody Dynamics, Vol. 217, No. K4, p. 273–282,

2003.

47. A. Sandu, D. Daescu, and G.R. Carmichael: “Direct and Adjoint Sensitivity Analysis of

Chemical Kinetic Systems with KPP: I – Theory and Software Tools”, Atmospheric Environ-

ment, Vol. 37, pp. 5083–5096, 2003.

48. D. Daescu, A. Sandu, and G.R. Carmichael: “Direct and Adjoint Sensitivity Analysis of

Chemical Kinetic Systems with KPP: II – Validation and Numerical Experiments”, Atmo-

spheric Environment, Vol. 37, pp. 5097–5114, 2003.

49. A. Sandu and C. T. Borden: “A Framework for the Numerical Treatment of Aerosol Dynam-

ics”, Applied Numerical Mathematics, No. 45, pp. 475–497, 2003.

50. V. Damian, A. Sandu, M. Damian, F. Potra, and G.R. Carmichael: “The Kinetic PreProces-

sor KPP – A Software Environment for Solving Chemical Kinetics”, Computers and Chemical

Engineering, Vol. 26, No. 11, p. 1567–1579, 2002.

51. P. Miehe, A. Sandu, G.R. Carmichael, Y. Tang, and D. Daescu: “A Communication Library

for the Parallelization of Air Quality Models on Structured Grids”, Atmospheric Environment,

Vol. 36, No. 24, pp. 3917–3930, 2002.

52. A. Sandu: “A Newton-Cotes Quadrature Approach for Solving the Aerosol Coagulation Equa-

tion”, Atmospheric Environment, Vol. 36, No. 3, pp. 583–589, 2002.

53. A. Sandu: “Positive Numerical Integration Methods for Chemical Kinetic Systems”, Journal

of Computational Physics, Vol. 170, pp. 1–14, 2001.

54. D. Daescu, G.R. Carmichael, and A. Sandu: “Adjoint Implementation of Rosenbrock Meth-

ods Applied to Variational Data Assimilation Problems”, Journal of Computational Physics,

Vol. 165, pp. 496–510, 2000.

55. S. He, G.R. Carmichael, A. Sandu, B. Hotchkiss, and V. Damian-Iordache: “Application of

ADIFOR for Air Pollution Model Sensitivity Studies”, Environmental Modeling and Software,

Vol. 15, pp. 549–557, 2000.

56. G.R. Carmichael, A. Sandu, C.H. Song, S. He, M. Phadnis, D. Daescu, V. Damian-Iordache,

and F.A. Potra: “Computational Challenges of Modeling Interactions between Aerosol and

Gas Phase Processes in Large Scale Air Pollution Models”, Environmental Management and

Health, Vol. 10/4, pp. 224–235, 1999.


57. A. Sandu, and T. Schlick: “Masking Resonance Artifacts in Force-Splitting Methods for

Biomolecular Simulations by Extrapolative Langevin Dynamics”, Journal of Computational

Physics, Vol. 151, No. 1, pp. 74–113, 1999.

58. A. Sandu, J.G. Verwer, J.G. Blom, E.J. Spee, G.R. Carmichael and F.A. Potra: “Bench-

marking Stiff ODE Solvers for Atmospheric Chemistry Problems II: Rosenbrock Methods” ,

Atmospheric Environment, Vol. 31, pp. 3459–3472, 1997.

59. A. Sandu, J.G. Verwer, M. van Loon, G.R. Carmichael, F.A. Potra, D. Dabdub, and J.H.

Seinfeld : “Benchmarking Stiff ODE Solvers for Atmospheric Chemistry Problems I: Implicit

versus Explicit”, Atmospheric Environment, Vol. 31, pp. 3151–3166, 1997.

60. L.O. Jay, A. Sandu, F.A. Potra, and G.R. Carmichael: “Improved QSSA Methods for Atmo-

spheric Chemistry Integration”, SIAM Journal on Scientific Computing, Vol. 18, Issue 1, p.

182–202, 1997.

61. G.R. Carmichael, A. Sandu, F.A. Potra, and V. Damian-Iordache: “Sensitivity Analysis for

Atmospheric Chemistry Models via Automatic Differentiation”, Atmospheric Environment,

Vol. 31, No. 3, pp. 475–489, 1997.

62. G.R. Carmichael, A. Sandu, F.A. Potra, V. Damian-Iordache, and M. Damian-Iordache: “The

Current State and the Future Directions in Air Quality Modeling”, Systems Analysis Mod-

elling Simulation (currently named “International Journal of Systems Science”), Vol. 25, pp.

75–105, 1996.

63. A. Sandu, F.A. Potra, V. Damian-Iordache, and G.R. Carmichael: “Efficient Implementation

of Fully Implicit Methods for Atmospheric Chemistry”, Journal of Computational Physics,

Vol. 129, pp. 101–110, 1996.

Conference Papers Under Review

1. M. Alexe* and A. Sandu: “Adaptive Solution of Time-dependent Inverse Problems with the

Discrete Adjoint Method”. Submitted to International Conference on Computational Science,

Japan, 2011.

2. T. Ahn* and A. Sandu: “Weakly Convergent Stochastic Implicit Integrators Applied to the

Solution of Stochastic Chemical Kinetic Problems”. Submitted to International Conference

on Computational Science, Japan, 2011.

3. A. Sandu and A. St-Cyr: “Stability Analysis of the Matrix-Free Linearly Implicit Euler

Method”. Submitted to High Performance Computing Symposium 2011.


4. H. Zhang* and A. Sandu: “FATODE: A Library for Forward, Adjoint, and Tangent Linear

Integration of Stiff Systems”. Submitted to High Performance Computing Symposium 2011.

5. T.-H. Ahn* and A. Sandu: “Fully Implicit Tau-Leaping Methods for the Stochastic Simula-

tion of Chemical Kinetics ” Submitted to High Performance Computing Symposium 2011.

Conference Papers

1. J. Hays*, D. Hong, C. Sandu, and A. Sandu: “DETC2010-28134: Design Optimization for

Minimizing Actuation Energy of a Dynamic Tripedal Walking Robot - Revisiting the Dou-

ble Pendulum”. Proceedings of the ASME 2010 International Design Engineering Technical

Conferences & Computers and Information in Engineering Conference (IDETC/CIE 2010),

C. Collins (ed.), 9 pages, American Society of Automotive Engineers (ASME), New York,

NY, 2010. Conference dates and venue: August 15–18, 2010, Montreal, Quebec, Canada.

2. E. Blanchard*, C. Sandu, and A. Sandu: “DETC2010-28467: LQR Stochastic Control”. Pro-

ceedings of the ASME 2010 International Design Engineering Technical Conferences & Com-

puters and Information in Engineering Conference (IDETC/CIE 2010), C. Collins (ed.), 10

pages, American Society of Automotive Engineers (ASME), New York, NY, 2010. Conference

dates and venue: August 15–18, 2010, Montreal, Quebec, Canada.

3. T.H. Ahn* and A. Sandu: “Parallel Stochastic Simulations of Budding Yeast Cell Cycle:

a Theoretical Analysis of Load Balancing Strategies”. Proceedings of ACM International

Conference on Bioinformatics and Computational Biology (ACM BCB 2010), L. Liao, G. Li,

A. Zhang, M. Borodovsky, G. Ozsoyoglu, and A.R. Mikler (eds.), pp. 237–246, Association

for Computing Machinery, New York, NY, 2010. Conference dates and venue: August 2–4,

2010, Niagara Falls, New York.

4. H. Cheng* and A. Sandu: “Collocation Least-squares Polynomial Chaos Method”. Pro-

ceedings of the 2010 Spring Simulation Multiconference (SpringSim’10), High Performance

Computing Symposium (HPC-2010), A. Sandu, L.T. Watson, W.I. Thacker (eds.), pp. 94–99,

Society for Modeling and Simulation International, Vista, California, 2010. Conference dates

and venue: April 12–15, 2010, Florida Mall Hotel and Conference Center Orlando, Florida.

5. P. Eller*, K. Singh*, and A. Sandu: “Development and Acceleration of Parallel Chemical

Transport Models”. Proceedings of the 2010 Spring Simulation Multiconference (SpringSim’10),

High Performance Computing Symposium (HPC-2010), A. Sandu, L.T. Watson, W.I. Thacker

(eds.), pp. 57–64, Society for Modeling and Simulation International, Vista, California, 2010.

Conference dates and venue: April 12–15, 2010, Florida Mall Hotel and Conference Center

Orlando, Florida.


6. M. Alexe*, A. Cioaca*, and A. Sandu: “Obtaining and Using Second Order Derivative Infor-

mation in the Solution of Large Scale Inverse Problems”. Proceedings of the 2010 Spring Sim-

ulation Multiconference (SpringSim’10), High Performance Computing Symposium (HPC-

2010), A. Sandu, L.T. Watson, W.I. Thacker (eds.), pp. 65–72, Society for Modeling and

Simulation International, Vista, California, 2010. Conference dates and venue: April 12–15,

2010, Florida Mall Hotel and Conference Center Orlando, Florida.

7. B. Lepsa* and A. Sandu: “An efficient error control mechanism for the Parareal time dis-

cretization algorithm and its variants”. Proceedings of the 2010 Spring Simulation Multicon-

ference (SpringSim’10), High Performance Computing Symposium (HPC-2010), A. Sandu,

L.T. Watson, W.I. Thacker (eds.), pp. 79–85, Society for Modeling and Simulation Interna-

tional, Vista, California, 2010. Conference dates and venue: April 12–15, 2010, Florida Mall

Hotel and Conference Center Orlando, Florida.

8. E. Blanchard, S. Sandu, and A. Sandu: “Comparison Between a Polynomial Chaos Based

Bayesian Approach and a Polynomial Chaos Based EKF Approach for Parameter Estimation

with Applications to Vehicle Dynamics”, Proceedings of the ASME 2009 International Design

Engineering Technical Conferences (IDETC) & Computers and Information in Engineering

Conference (CIE), 11-th International Conference on Advanced Vehicle and Tire Technol-

ogy (AVTT), Paper no DETC2009-86402, 12 pages. Recipient of AVTT Best Paper award.

American Society of Automotive Engineers (ASME), New York, NY, 2009. Conference dates

and venue: Aug. 30–Sept 2 2009, San Diego, California.

9. A. Sandu and E.M. Constantinescu*: “Multirate Time Integration of Hyperbolic Partial Dif-

ferential Equations”. Seventh International Conference on Numerical Analysis and Applied

Mathematics (ICNAAM 2009), American Institute of Physics (AIP) Conference Proceedings,

Vol. 1168, pp. 1411–1414, doi:10.1063/1.3241354, 2009. Conference dates and venue: 18–22

September 2009, Rethymno, Crete, Greece.

10. J.C. Linford*, J. Michalakes, M. Vachharajani, and A. Sandu: “Multicore Acceleration of

Chemical Kinetics for Simulation and Prediction”. Proceedings of the ACM/IEEE Conference

on High Performance Computing Networking, Storage and Analysis (SC’09), pp. 1–11, ISBN:

978-1-60558-744-8, Association for Computing Machinery, New York, NY, 2009. Conference

dates and venue: November 14–20, 2009, 2009, Portland, Oregon.

11. E.M. Constantinescu* and A. Sandu: “Explicit Time Stepping Methods with High Stage

Order and Monotonicity Properties”. International Conference on Computational Science

2009 (ICCS-2009), Springer Lecture Notes on Computational Science (LNCS), Vol. 5545,

G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot (eds.),

pp. 293–301, Springer, 2009. Conference dates and venue: May 25–27, 2009, Baton Rouge,

Louisiana. Acceptance rate 30%.


12. K. Singh and A. Sandu: “Improving GEOS-ChemModel Forecasts Through Profile Retrievals

from Tropospheric Emission Spectrometer”. International Conference on Computational Sci-

ence 2009 (ICCS-2009), Springer Lecture Notes on Computational Science (LNCS), Vol.

5545, G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot

(eds.), pp. 302–311, Springer, 2009. Conference dates and venue: May 25–27, 2009, Baton

Rouge, Louisiana. Acceptance rate 30%.

13. T.Y. Gou and A. Sandu: “Chemical Data Assimilation with CMAQ: Continuous vs. Discrete

Advection Adjoints”. International Conference on Computational Science 2009 (ICCS-2009),

Springer Lecture Notes on Computational Science (LNCS), Vol. 5545, G. Allen, J. Nabrzyski,

E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot (eds.), pp. 312–321, Springer,

2009. Conference dates and venue: May 25–27, 2009, Baton Rouge, Louisiana. Acceptance

rate 30%.

14. K. Singh*, P. Eller*, A. Sandu, D. Henze, K. Bowman, M. Kopacz and M. Lee: “Towards

the Construction of a Standard Adjoint GEOS-Chem Model”. Proceedings of the 2009

Spring Simulation Multiconference, High Performance Computing Symposium, C. Ribbens,

A. Sandu, and W.I. Thacker (eds.), 8 pages, Society for Modeling and Simulation Interna-

tional, Vista, California, 2009. Conference dates and venue: March 22–27, 2009, San Diego,

California.

15. S. Schneider, J.-S. Yeom, Benjamin Rose, J.C. Linford*, A. Sandu and D.S. Nikolopoulos: “A

Comparison of Programming Models for Multiprocessors with Explicitly Managed Memory

Hierarchies”. Proceedings of the 14th ACM SIGPLAN Symposium on Principles and Practice

of Parallel Programming (PPoPP), pp. 131—140, Association for Computing Machinery,

New York, NY, 2009. Conference dates and venue: February 14–18, 2009, Raleigh, North

Carolina.

16. H. Cheng* and A. Sandu: “Uncertainty Apportionment for Air Quality Forecast Models”

Proceedings of 24th Annual ACM Symposium on Applied Computing (SAC-2009), Computa-

tional Sciences Track, A. Sandu and Y. Cao (eds.), pp. 956–960, Association for Computing

Machinery, New York, NY, 2009. Conference dates and venue: March 8–12, 2009, Hilton

Hawaiian Village Beach Resort & Spa, Waikiki Beach, Honolulu, Hawaii. Acceptance rate

29%.

17. J.C. Linford* and A. Sandu: “3D Chemical Transport for the Cell Broadband Engine”. Pro-

ceedings of 24th Annual ACM Symposium on Applied Computing (SAC-2009), Computational

Sciences Track, A. Sandu and Y. Cao (eds.), pp. 976-980, Association for Computing Machin-

ery, New York, NY, 2009. Conference dates and venue: March 8–12, 2009, Hilton Hawaiian

Village Beach Resort & Spa, Waikiki Beach, Honolulu, Hawaii. Acceptance rate 29%.

18. A. Sandu and E.M. Constantinescu*: “Extrapolation Multirate Methods for Time Integra-

tion”. Proceedings of the Congress of the European Consortium for Mathematics in Industry


(ECMI 2008), Progress in Industrial Mathematics at ECMI 2008, A.D. Fitt, J. Norbury, H.

Ockedon, and R.E. Wilson (eds.), pp. 341–347. Springer-Verlag Heidelberg, Dordrecht, Lon-

don, New York, ISBN: 978-3-642-12109-8, doi: 10.1007/978-3-642-12110-4, 1083 pages, 2010.

Conference dates and venue: June 30–July 5, 2008, London, U.K.

19. A. Sandu: “Chemical Data Assimilation: Computational Tools and Applications”. Proceed-

ings of the 8th International Conference on HydroScience and Engineering (ICHE 2008), 10

pages, Nagoya Hydraulic Research Institute for River Basin Management, Department of

Civil Engineering, Nagoya University, 2008. Conference dates and venue: Sept. 8–12, 2008,

Nagoya, Japan.

20. A. Sandu and L. Zhang*: “Obtaining and Using Second Order Information in the Solu-

tion of Inverse Problems”. ASME 2008 International Design Engineering Technical Confer-

ences & Computers and Information in Engineering Conference IDETC/CIE 2008, paper no.

DETC2008/CIE-49242 (paper accepted in final form; not included in the proceedings due to

administrative delays). American Society of Automotive Engineers (ASME), New York, NY,

2008. Conference dates and venue: August 3–6, 2008, Brooklyn, New York.

21. M. Lee, R. Weidner, K. Bowman,A. Sandu, and K. Singh*: “Sensor-web Operations Explorer

(SOX) for Integrated Air Quality Campaign”. NASA Earth Science Technology Conference

(ESTC2008), 11 pages, National Aeronautics and Space Agency, 2008. Conference dates and

venue: June 24–26. 2008, University College, Maryland.

22. J.C. Linford* and A. Sandu: “Optimizing Large Scale Chemical Transport Models for Multi-

core Platforms”. Proceedings of the 2008 Spring Simulation Multiconference (SpringSim’08),

High Performance Computing and Simulation Symposium (HPCS-2008), M. Sosonkina, T.

Haupt, C. Shaffer, and A. Sandu (eds.), paper no. 30, 8 pages, Society for Modeling and

Simulation International, Vista, California. Conference dates and venue: April 14-1-6, 2008,

Ottawa, Ontario, Canada.

23. E.M. Blanchard*, A. Sandu, and C. Sandu: “Parameter Estimation Method using an Ex-

tended Kalman Filter”. Proceedings of the 2007 Asia-Pacific and North America Regional

ISTVS Conference, paper no. PI074, The International Society for Terrain-Vehicle Systems

(ISTVS), North Carolina, USA. Conference dates and venue: June 23–25 2007, Fairbanks,

Alaska.

24. E.M. Blanchard*, C. Sandu, and A. Sandu: “A Polynomial Chaos Based Bayesian Ap-

proach for Estimating Uncertain Parameters of Mechanical Systems”. Proceedings of the

ASME IDETC 2007, 9-th International Conference on Advanced Vehicle and Tire Technology

(AVTT), paper no. DETC2007-34600, 8 pages, American Society of Automotive Engineers

(ASME), New York, NY, 2007. Conference dates and venue: September 4–7, 2007, Las Vegas,

Nevada.


25. H. Cheng and A. Sandu: “Numerical Study of Uncertainty Quantification Techniques for

Implicit Stiff Systems”. Proceedings of the 45-th ACM Southeast Conference, D. Dicheva,

V.P. Pauca, and J. Burg (eds.), 8 pages, Association for Computing Machinery, New York,

NY, 2007. Conference dates and venue: March 23-24, 2007, Winston-Salem, North Carolina.

26. M. Alexe and A. Sandu: “An Investigation of Discrete Adjoints for Flux-Limited Numerical

Schemes”. Proceedings of the 45-th ACM Southeast Conference, D. Dicheva, V.P. Pauca,

and J. Burg (eds.), 8 pages, Association for Computing Machinery, New York, NY, 2007.

Conference dates and venue: March 23-24, 2007, Winston-Salem, North Carolina.

27. A. Srivastava, J.C. Linford*, and A. Sandu: “Performance of Stabilized Explicit Time Inte-

gration Methods For Parallel Air Quality Models”. Proceedings of the 2007 Spring Simulation

Multiconference (SpringSim’05), High Performance Computing Symposium (HPC-2007), L.T.

Watson, T. Haupt, M. Sosonkina, and C. Shaffer (eds.), 8 pages, Society for Modeling and

Simulation International, Vista, California, 2007. Conference dates and venue: March 25-29,

2007, Norfolk, Virginia.

28. A. Sandu, E.M. Constantinescu*, G.R. Carmichael, T. Chai, J.H. Seinfeld, and Dacian

Daescu: “Localized Ensemble Kalman Dynamic Data Assimilation for Atmospheric Chem-

istry”. International Conference for Computational Science (ICCS-2007), Dynamic Data

Driven Application Systems Workshop, Springer Lecture Notes in Computer Science (LNCS),

Vol. 4487, Y. Shi, G.D. van Albada, J. Dongarra, and P.M.A. Sloot (eds.), pp. 1018–1025.

Conference dates and venue: May 27-30, 2007, Beijing, China. Acceptance rate 35%.

29. L. Zhang and A. Sandu: “Data Assimilation in Multiscale Chemical Transport Models”. In-

ternational Conference for Computational Science (ICCS-2007), Dynamic Data Driven Ap-

plication Systems Workshop, Springer Lecture Notes in Computer Science (LNCS), Vol. 4487,

Y. Shi, G.D. van Albada, J. Dongarra, and P.M.A. Sloot (eds.), pp. 1026–1033. Conference

dates and venue: May 27-30, 2007, Beijing, China. Acceptance rate 35%.

30. P. Miehe and A. Sandu: “Forward, Tangent Linear, and Adjoint Runge Kutta Methods

in KPP–2.2”. International Conference for Computational Science (ICCS-2006), Springer

Lecture Notes in Computer Science (LNCS), Vol. 3993, V.N. Alexandrov et al. (eds.), pp.

120–127, Springer-Verlag Berlin Heidelberg, 2006. Conference dates and venue: May 28–31,

2006, Reading, U.K. Acceptance rate 35%.

31. A. Sandu: “Targeted Observations for Atmospheric Chemistry and Transport Models”. In-

ternational Conference for Computational Science (ICCS-2006), Springer Lecture Notes in

Computer Science (LNCS), Vol. 3991, V.N. Alexandrov et al. (eds.), pp. 712–719, Springer-

Verlag Berlin Heidelberg, 2006. Conference dates and venue: May 28–31, 2006, Reading,

U.K. Acceptance rate 35%.

32. A. Sandu: “On the Properties of Runge-Kutta Discrete Adjoints”. International Confer-

ence for Computational Science (ICCS-2006), Springer Lecture Notes in Computer Science


(LNCS), Vol. 3994, V.N. Alexandrov et al. (eds.), pp. 550–557, Springer-Verlag Berlin Hei-

delberg, 2006. Conference dates and venue: May 28–31, 2006, Reading, U.K. Acceptance rate

35%.

33. L. Lin, C. Sandu, and A. Sandu: “Modeling and Simulation of a Full Vehicle with Parametric

and External Uncertainties”. Proceedings of the 2005 ASME International Mechanical Engi-

neering Congress and Exposition, 7th Vehicle Dynamics and Controls Annual Symposium on

Advanced Vehicle Technologies, Session 4: Advances in Vehicle Systems Modeling and Sim-

ulation, paper No. IMechE-2005-82101, 6 pages, American Society of Automotive Engineers

(ASME), New York, NY, 2005. Conference dates and venue: November 6-11, 2005, Orlando,

Florida.

34. C. Sandu, A. Sandu, and L. Lin: “Stochastic Modeling of Terrain Profiles and Soil Param-

eters”. Proceedings of the SAE Commercial Vehicle Engineering Congress and Exhibition,

paper No. 2005-01-3559, 10 pages, American Society of Automotive Engineers (ASME), New

York, NY, 2005. Conference dates and venue: November 1-3, 2005, Chicago, Illinois.

35. A. Sandu, E.M. Constantinescu*, W. Liao*, G.R. Carmichael, T. Chai, J.H. Seinfeld, and D.

Daescu: “Ensemble–Based Data Assimilation for Atmospheric Chemical Transport Models”.

International Conference for Computational Science (ICCS-2005), Springer Lecture Notes in

Computer Science (LNCS), Vol. 3515, pp. 648–655, Springer-Verlag GmbH, 2005. Conference

dates and venue: May 22–25, 2005, Atlanta, Georgia.

36. E.M. Constantinescu*, W. Liao*, and A. Sandu: “On Adaptive Mesh Refinement in High

Resolution Air Quality Modeling”. International Conference for Computational Science

(ICCS-2005), Springer Lecture Notes in Computer Science (LNCS), Vol. 3515, pp. 798–

805, Springer-Verlag GmbH, 2005. Conference dates and venue: May 22–25, 2005, Atlanta,

Georgia.

37. W. Liao* and A. Sandu: “Total Energy Singular Vectors for Atmospheric Chemical Transport

Models”. International Conference for Computational Science (ICCS-2005), Springer Lecture

Notes in Computer Science (LNCS), Vol. 3515, pp. 806–813, Springer-Verlag GmbH, 2005.

Conference dates and venue: May 22–25, 2005, Atlanta, Georgia.

38. Z. Liu and A. Sandu: “Analysis of Discrete Adjoints for Upwind Numerical Schemes”. In-

ternational Conference for Computational Science (ICCS-2005), Springer Lecture Notes in

Computer Science (LNCS), Vol. 3515, pp. 829–836, Springer-Verlag GmbH, 2005. Confer-

ence dates and venue: May 22–25, 2005, Atlanta, Georgia.

39. E.M. Constantinescu*, W. Liao*, and A. Sandu: “Mesh Refinement Strategies in Air Qual-

ity Modeling”. Proceedings of the 2005 Spring Simulation Multiconference (SpringSim’05),

High Performance Computing Symposium (HPC-2005), M. Parashar and L. Watson editors,

pp. 158–163, Society for Modeling and Simulation International, Vista, California, 2005.

Conference dates and venue: April 2-8, 2005, San Diego, California.


40. C. Sandu, A. Sandu, B. Chan, and M. Ahmadian: “Treatment of Constrained Multibody

Dynamic Systems with Uncertainties”. Proceedings of the SAE Congress 2005, paper No.

2005-01-0936, 11 pages, Society of Automotive Engineers, Willendale, Pennsylvania, 2005.

Conference dates and venue: April 11-14, 2005, Detroit, Michigan.

41. A. Sandu, C. Sandu, B. Chan, and M. Ahmadian: “Control of Mechanical Systems using a

Parameterized Spectral Decomposition Approach”. Proceedings of the ASME IMechE 2004,

6th annual symposium on advanced vehicle technology, paper no. IMechE-2004-60484, 9 pages,

American Society of Automotive Engineers (ASME), New York, NY, 2004. Conference dates

and venue: November 14-19, 2004, Annaheim, California.

42. C. Sandu, A. Sandu, B. Chan, and M. Ahmadian: “Treating Uncertainties in Multi-body

Dynamic Systems using a Polynomial Chaos Spectral Decomposition”. Proceedings of the

ASME IMechE 2004, sixth Annual Symposium on Advanced Vehicle Technology, paper no.

IMechE-2004-60482, 9 pages, American Society of Mechanical Engineers, 2004. Conference

dates and venue: November 14-19, 2004, Annaheim, California.

43. G.R. Carmichael, A. Sandu, D. Daescu, T. Chai, J.H. Seinfeld, P. Hess, and T. Anderson:

“Chemical Data Assimilation in Support of Air Quality Forecasting”. Proceedings of the

84-th American Meteorological Society annual meeting, Session 2: Air quality modeling and

forecasting, paper No. 2.1, 6 pages, American Meteorological Society, Boston, Massachusetts,

2004. Conference dates and venue: January 11-15, 2004, Seattle, Washington.

44. T. Chai, G.R. Carmichael, D. Daescu, and A. Sandu: “Analysis of TraceP Observations Using

a 4D-Var Data Assimilation Technique”. Proceedings of the 84-th American Meteorological

Society annual meeting, Session 8: Assimilation of observations (ocean, atmosphere, and

land surface) into models, paper No. 8.4, 6 pages, American Meteorological Society, Boston,

Massachusetts, 2004. Conference dates and venue: January 11-15, 2004, Seattle, Washington.

45. A. Sandu, W. Liao*, G.R. Carmichael, D. Henze, J.H. Seinfeld, T. Chai, and D. Daescu:

“Computational Aspects of Data Assimilation for Aerosol Dynamics”. International Confer-

ence for Computational Science (ICCS-2004), Springer Lecture Notes in Computer Science,

Springer-Verlag GmbH, Vol. 3038, pp. 709–716, 2004. Conference dates and venue: June

6–9, 2004, Krakow, Poland.

46. C. Belwal, A. Sandu, E.M. Constantinescu*: “Adaptive Resolution Modeling of Air Pollu-

tion”. Proceedings of ACM Symposium on Applied Computing (SAC-2004), Computational

Sciences Track, A. Sandu (ed.), pp. 235–239, Association for Computing Machinery, New

York, NY, 2004. Conference dates and venue: March 2004, Nicosia, Cyprus.

47. A. Sandu, D. Negrut, C. Sandu, E. J. Haug, F. A. Potra: “Rosenbrock Nystrom Integrator

for SSODE of Mechanical Systems”. Proceedings of 2003 ASME DETC, 19-th Biennial Con-

ference on Mechanical Vibration and Noise (VIB), fourth Symposium on Multibody Dynamics


and Vibration, paper No. VIB-48329, 8 pages, American Society of Automotive Engineers

(ASME), New York, NY, 2003. Conference dates and venue: September 6–10, 2003, Chicago,

Illinois.

48. G.R. Carmichael, D. Daescu, A. Sandu, and T. Chai: “Computational Aspects of Chemical

Data Assimilation into Atmospheric Models”. International Conference for Computational

Science (ICCS-2003), Springer Lecture Notes in Computer Science, Vol. 2660, pp. 269–278,

Springer-Verlag GmbH, 2003. Conference dates and venue: June 2003, Melbourne, Australia.

49. A. Sandu and C. T. Borden: “Discretization of Aerosol Dynamics with B-splines”. Proceed-

ings of ACM Symposium on Applied Computing (SAC-2003), Computational Sciences Track,

A. Sandu editor, pp. 189–193, Association for Computing Machinery, New York, NY, 2003.

Conference dates and venue: March 13-18, 2003, Melbourne, Florida.

50. A. Sandu, D. Daescu and G.R. Carmichael: “Adjoint Data Assimilation for Aerosol Dy-

namics”. Proceedings of the Second International Conference on Air Pollution Modeling and

Simulation (APMS-2001), B. Sportisse (ed.), pp. 319–331, Springer 2002. Conference dates

and venue: April 9–13, 2001, Paris, France.

51. J. F. Duff, P. Merkey and A. Sandu: “Parallel Molecular Dynamics Using MPI on a Scyld-

style Beowulf Cluster”. Proceedings of the tenthth SIAM Conference on Parallel Processing

for Scientific Computing (PPSC-2001), pp. 272–279, Society for Industrial and Applied

Mathematics, Philadelphia, Pennsylvania, 2001. Conference dates and venue: March 12–14,

2001, Portsmouth, Virginia.

52. D. Daescu, G.R. Carmichael, and A. Sandu: “Adjoint Implementation of Rosenbrock Meth-

ods Applied to Variational Data Assimilation”. Millennium NATO/CCMS International

Technical Meeting on Air Pollution Modeling and its Applications, pp. 346–354, American

Meteorological Society, Boston, Massachusetts, 2000. Conference dates and venue: May 15–

19, 2000, Boulder, Colorado.

53. H. Shan, G.R. Carmichael, A. Sandu, and B. Hotchkis: “Exploring the Effects of Aerosols

and Photochemistry and Radiative Processes in the Troposphere Using Automatic Differen-

tiation”. Proceedings of the First International Conference on Air Pollution Modeling and

Simulation (APMS-1998), B. Sportisse (ed.), 12 pages, Springer, 1998. Conference dates and

venue: October 26–29, 1998, Champs-sur-Marne, France.

54. L.O. Jay, A. Sandu, F.A. Potra, and G.R. Carmichael: “Efficient Numerical Integration for

Atmospheric Chemistry”. Third International Congress on Industrial and Applied Mathemat-

ics (ICIAM-1995), Special issue of ZAMM (Journal of Applied Mathematics and Mechanics),

Issue 4: Applied Sciences, E. Kreuzer and O. Mahrenholtz (eds.), pp. 450–453, Akademie-

Verlag, Berlin, 1996. Conference dates and venue: July 1995, Hamburg, Germany.


55. A. Sandu, G.R. Carmichael, and F.A. Potra: “Using Automatic Differentiation for Sensitivity

Analysis of Atmospheric Chemistry Models”. Theory and Applications of Sensitivity Analysis

of Model Output in Computer Simulation (SAMO 1995) Proceedings, Office for Official Pub-

lications of the European Communities, pp. 49–51, L–2985 Louxembourg, 1995. Conference

dates and venue: June 18–22, 1995, Belgirate, Italy.

Prefaces and Introductions

1. A. Sandu, L. T. Watson, and W.I. Thacker: “The High Performance Computing Symposium

(HPC 2010)”. Proceedings of the 2010 Spring Simulation Multiconference (SpringSim’10),

High Performance Computing Symposium (HPC-2010), A. Sandu, L. T. Watson, and W.I.

Thacker (eds.), 1 page, Society for Modeling and Simulation International, Vista, California,

2010.

2. A. Sandu, A. St-Cyr, and K. Evans: “Atmospheric and Oceanic Computational Sciences”. In-

ternational Conference on Computational Science 2009 (ICCS 2009), Springer Lecture Notes

on Computational Science, Vol. 5545, G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J.

Dongarra, and P.M.A. Sloot (eds.), pp. 241–242, Springer, 2009.

3. A. Sandu and Y. Cao: “Computational Sciences Track Editorial” Proceedings of ACM Sym-

posium on Applied Computing (SAC-2009), A. Sandu and Y. Cao (eds.) , pp. 947–948

Association for Computing Machinery, New York, NY, 2009.

4. A. Sandu: “Computational Sciences Track Editorial”, Proceedings of ACM Symposium on

Applied Computing (SAC-2004), A. Sandu (ed.), 1 page, Association for Computing Machin-

ery, New York, NY, 2004.

5. A. Sandu: “Computational Sciences Track Editorial”, Proceedings of ACM Symposium on

Applied Computing (SAC-2003), pp. 141–142, A. Sandu (ed.), Association for Computing

Machinery, New York, NY, 2003.

Conference Presentations, Posters, Work Accepted by Abstract

1. A. Sandu: “On the Matrix-Free Implementation of Rosenbrock-W Methods”. MS116: Prac-

tical Scientific Computing with High-order Methods. SIAM Conference on Computational

science and Engineering, abstract p. 192, Reno, Nevada, March 1–4, 2011.

2. A. Sandu: “ New Computational Tools for Chemical Data Assimilation”. MS141: Com-

bining Data Assimilation and Sensitivity in Air Quality Forecasting. SIAM Conference on

Computational science and Engineering, abstract p. 221, Reno, Nevada, March 1–4, 2011.


3. H. Cheng* and A. Sandu: “Uncertainty Quantification and Reduction in Chemical Transport

Models”. SIAM Conference on Computational Science and Engineering (SIAM CSE 2009),

Miami, Florida, March 4–8, 2009.

4. E.M. Constantinescu* and A. Sandu: “Strong Stability Preserving General Linear Methods”.

SIAM Conference on Computational Science and Engineering (SIAM CSE 2009), Miami,

Florida, March 4–8, 2009.

5. A. Sandu and E.M. Constantinescu*: “Implicit-Explicit Extrapolation Methods for High Or-

der Time Integration”. SIAM Conference on Computational Science and Engineering (SIAM

CSE 2009), Miami, Florida, March 4–8, 2009.

6. E.M. Constantinescu* and A. Sandu: ‘Ensemble Based Data Assimilation with Chemical

Transport Models”. SIAM Conference on Computational Science and Engineering (SIAM

CSE 2009), Miami, Florida, March 4–8, 2009.

7. A. Sandu: “New Developments in Variational Chemical Data Assimilation”. SIAM Confer-

ence on Computational Science and Engineering (SIAM CSE 2009), Miami, Florida, March

4–8, 2009.

8. J.C. Linford* and A. Sandu: “Chemical Kinetics on Multicore SIMD Architectures”. Inter-

national Conference on Computational Science 2009 (ICCS 2009), Baton Rouge, Louisiana,

May 25–27, 2009.

9. E.M. Constantinescu* and A. Sandu: “Achieving very high accuracy for the time integra-

tion of multiscale processes using extrapolation methods”. Applied Mathematics Principal

Investigators Meeting (AMR 08), Argonne National Laboratory October 15-17, 2008.

10. A. Sandu and E.M. Constantinescu*: “Multirate, multimethod time stepping techniques for

PDEs”. Tenth Copper Mountain conference on iterative methods, abstract p. 70, Copper

Mountain, Colorado, April 6–12, 2008.

11. J.C. Linford* and A. Sandu: “Chemical Transport Models on Cell Platforms”. SIAM Parallel

Processing PP-08, March 13–18 2008, Atlanta, Georgia.

12. J.C. Linford* and A. Sandu: “Performance of Stabilized Explicit Time Integration Methods

For Parallel Air Quality Models”. Virginia Tech Graduate Research Symposium, March 28,

2007.

13. A. Sandu: “Computational Aspects of Data Assimilation”, SIAM Conference on Mathemat-

ical and Computational Issues in the Geosciences GS-07, Santa Fe, NM, March 18–22, 2007.

14. A. Sandu and E.M. Constantinescu*: “The 4D-Var Approach for Chemical Data Assimila-

tion”, SIAM Conference on Computational Sciences and Engineering CSE-07, Costa Mesa,

CA, February 18–22, 2007.


15. E.M. Constantinescu* and A. Sandu: “The Ensemble Kalman Filter Approach for Chemical

Data Assimilation”, SIAM Conference on Computational Sciences and Engineering CSE-07,

Costa Mesa, CA, February 18–22, 2007.

16. K. Singh*, A. Sandu, and A. Hakami: “The Construction of CMAQ Adjoint”. International

Conference for Computational Science (ICCS-2007, acceptance rate 35%), Beijing, China,

May 27-30, 2007.

17. A. Sandu: “Chemical Data Assimilation – Fusing Models and Observations”. International

Conference on Atmospheric Chemical Mechanisms, University of California at Davis, Decem-

ber 6–8, 2006.

18. A. Hakami, J. Seinfeld, K. Singh*, A. Sandu, D.W. Byun, P. Percell, V. Coarfa: “Sattelite-

based inversion of NOx emissions using the adjoint of the CMAQ model”, Fifth Annual CMAS

Conference, Chapel Hill, NC, October 16–18, 2006.

19. (Poster) A. Hakami, J. Seinfeld, K. Singh*, A. Sandu, D.W. Byun, P. Percell, V. Coarfa:

“Development of Adjoint Sensitivity Analysis Capabilities for CMAQ”, Fifth Annual CMAS

Conference, Chapel Hill, NC, October 16–18, 2006.

20. K. Singh*, A. Sandu, A. Hakami, J. Seinfeld, D.W. Byun, P. Percell, V. Coarfa: “Numerical

Aspects of the CMAQ Adjoint”, Fifth Annual CMAS Conference, Chapel Hill, NC, October

16–18, 2006.

21. A. Sandu: “Recent Developments in Chemical Data Assimilation”, SIAM Annual Meeting

AN-06, Boston, MA, July 10–14, 2006.

22. G.R. Carmichael, T. Chai, Y. Tang, A. Sandu, D. Daescu, J. Seinfeld, P. Hess, and T.

Anderson: “Chemical Data Assimilation in Support of Air Quality Forecasts”, Eos Trans.

AGU, 86(52), Fall Meet. Suppl., Abstract No. A33F-01, AGU Fall Meeting 2005, Dec. 5–9,

2005.

23. A.Sandu, G.R. Carmichael, T. Chai, E.M. Constantinescu*, W. Liao*, and D. Daescu: “New

Developments in Chemical Data Assimilation: Computational Tools”, Eos Trans. AGU,

86(52), Fall Meet. Suppl., Abstract no. A33F-02 (invited), AGU Fall Meeting 2005, Dec.

5–9, 2005.

24. T. Chai, G.R. Carmichael, Y. Tang, A. Sandu, E.M. Constantinescu*, and J.S. Skorton:

“Uncertainty Analysis of STEM-2K1 Air Quality Forecasts for ICARTT”, Eos Trans. AGU,

86(52), Fall Meet. Suppl., Abstract No. A33F-03, AGU Fall Meeting 2005, Dec. 5–9, 2005.

25. (Poster) A. Sandu, E.M. Constantinescu*, P. Miehe*, L. Zheng*, W. Liao*: “Computational

Tools for Chemical Data Assimilation”, Fall Creek Falls Conference on Computational Sci-

ences, October 16-18, 2005.


26. (Poster) A. Sandu, E.M. Constantinescu*, P. Miehe*, L. Zheng*, W. Liao*: “Computational

Tools for Chemical Data Assimilation”, NSF Workshop on Collaborations in Mathematical

Geosciences, Durham, NC, October 7-8, 2005.

27. A. Sandu, W. Liao*, D. Daescu, G.R. Carmichael, and T. Chai: “Adjoint Sensitivity Analysis

and Data Assimilation for Atmospheric Chemical Models”, SIAM Annual Meeting AN04,

Minisymposium MS49, Portland, OR, July 2004. Abstract p. 159.

28. D. Daescu and A. Sandu: “Time Dependent Sensitivity Analysis and Parameter Estimation

for Multiscale Systems”, SIAM Annual Meeting AN04, Minisymposium MS10, Portland, OR,

July 2004. Abstract p. 131.

29. A. Sandu, D. Daescu, G.R. Carmichael, and T. Chai: “Parallel Chemical Data Assimilation

in Atmospheric Models”, SIAM Conference on Parallel Processing PP04, Session CP4, San

Francisco, March 2004. Abstract p. 40.

30. C. Belwal*, A. Sandu, and E.M. Constantinescu*: “Parallel Adaptive Simulations of Regional

Air Quality”, SIAM Conference on Parallel Processing PP04, Session CP4, San Francisco,

March 2004. Abstract p. 40.

31. D. Daescu, G.R. Carmichael, and A. Sandu: “Assimilation of Chemical Measurements into

Atmospheric Chemistry Transport Models”, SIAM Conference on Mathematical and Com-

putational Issues in the Geosciences(GS03), Austin, Texas, March 2003.

32. A. Sandu and C. T. Borden*: “Modeling the Dynamics and Chemistry of Atmospheric

Aerosols”, SIAM Conference on Computational Sciences and Engineering CSE03, Session

CP29, San Diego, February 2003.

33. A. Sandu and D. Daescu: “Discrete Adjoints for Stiff Systems”, SIAM Conference on Com-

putational Sciences and Engineering CSE03, Session CP16, San Diego, February 2003.

34. C.T. Borden* and A. Sandu: “Numerical Treatment of Aerosol and Chemical Components in

Air Quality Models”, SIAM 50th Anniversary and 2002 Annual Meeting, Philadelphia, July

8-12, 2002, abstract p. 118.

35. D. Daescu and A. Sandu: “Adjoint Modeling For Chemical Reactions Mechanisms: Discrete

Versus Continuous” , 5th Workshop on Adjoint Applications in Dynamic Meteorology, Mount

Bethel, Pennsylvania, April 21-26, 2002.

36. A. Sandu and D. Daescu: “Automatic Generation Of Efficient Adjoints For Chemical Kinetic

Systems”, 5th Workshop on Adjoint Applications in Dynamic Meteorology, Mount Bethel,

Pennsylvania, April 21-26, 2002.

37. A. Sandu: “Numerical Solutions of Particle Dynamics Equation”, 2001 SIAM Annual Meet-

ing, pp. 139, San Diego, California, July 9-13, 2001.


38. A. Sandu and C.T. Borden*: “Computational Methods For Atmospheric Aerosol Modeling”,

6th SIAM Conference on Mathematical and Computational Issues in the Geosciences (GS01),

pp. 34, Boulder, Colorado, June 11-14, 2001.

39. A. Sandu: “Preserving Natural Invariants in Numerical Chemical Kinetics”, IMA workshop

on Atmospheric Modeling, Minneapolis, March 14-19, 2000.

40. A. Sandu and T. Schlick: “Multiple Time Stepping with Langevin Dynamics”, Gordon Con-

ference on Computational Chemistry, Tilton School, Tilton, New Hampshire, June 28 - July

3, 1998.

41. A. Sandu, G.R. Carmichael, and F.A. Potra: “Coupled chemistry and Transport Computa-

tions in Air Quality Modeling”, International Conference on Air Pollution Modeling, Paris,

1998.

42. A. Sandu: “Fast Solvers For Atmospheric Chemistry”, REMAPE Conference, Copenhagen,

September 1996.

43. A. Sandu: “Efficient QSSA Integrators for Atmospheric Chemistry”, Midwest Numerical

Analysis Day, the University of Iowa, Iowa City, April 1995.

44. A. Sandu: “Reduced Order Robust Controllers”, International Conference on Informatics,

Plovdiv, Bulgaria, 1989.

45. A. Sandu: “About Stability in Bi- And Tri- Positional Control”, session for scientific papers

for undergraduate students, section “Regulators”, Bucharest, 1989.

46. A. Sandu and M. Weiss: “Kernel of an Operating System for Networks Performing Multi-

tasking”, session for scientific papers for undergraduate students, Sinaia, 1989.

47. M. Weiss and A. Sandu: “Order Reduction of a Hinfty Regulator”, session for scientific

papers for undergraduate students, section “Systems theory”, Bucharest, 1989.

48. C. Georgescu and A. Sandu: “Fliess Series and Non-Linear Applications”, session for scientific

papers for undergraduate students, section “Systems theory”, Bucharest, 1988.

Other (not published elsewhere)

1. A. Sandu and T.Y. Gou*: “Improvements of the 4D-Var CMAQ Model”. Report for the

Houston Advanced Research Council for project H98 (Task 4), and for the Texas Commission

on Environmental Quality, October 2009.

2. A. Sandu and K. Singh*: “Development of an Adjoint Model for CMAQ-4.5”. Report for

the Houston Advanced Research Council for project H45C, and for the Texas Commission on

Environmental Quality, March 2007.


3. A. Sandu, L. Zhang*, and E.M. Constantinescu*: “Sensitivity Analysis and 4D-Var Data

Assimilation Part I: July 2004 Episode”. Report for the Houston Advanced Research Council

for project H59, and for the Texas Commission on Environmental Quality, March 2007.

4. A. Sandu, L. Zhang*, and E.M. Constantinescu*: “Sensitivity Analysis and 4D-Var Data

Assimilation Part II: June 2005 episode”. Report for the Houston Advanced Research Council

for project H59, and for the Texas Commission on Environmental Quality, March 2007.

5. A. Sandu and C.T. Borden*: “Discretizing Aerosol Dynamics with B-Splines”, Computer

Science Technical Report CSTR-01-09, Michigan Technological University, 2001.

6. A. Sandu: “Reduced Atmospheric Chemistry Models by Sensitivity Matrix Approach”. Com-

puter Science Technical Report CSTR-01-08, Michigan Technological University, 2001.

7. A. Sandu: “A Spectral Method for Solving Aerosol Dynamics”, Computer Science Technical

Report CSTR-01-04, Michigan Technological University, 2001.

8. A. Bamberger, Z. B. Dabaghi, E. Billette, A. Jaecker, P. Quandalle, and A. Sandu: “Mathe-

matical and Numerical Analysis to Reduce Atmospheric Chemical Model in Transport Con-

vection Problem”, Institut Francais du Petrole report no 43721, 1997.

9. V. Damian-Iordache, A. Sandu, F.A. Potra, G.R. Carmichael, and M. Damian-Iordache:

“Kpp - A Symbolic Preprocessor For Chemical Kinetics - User’s Guide”, Center for Global

and Regional Environmental Research, The University of Iowa, 1995.

Books Edited

1. Proceedings of the 2010 Spring Simulation Multiconference, High Performance Computing

Symposium, A. Sandu, L.T. Watson, and W. Thacker editors, Society for Modeling and

Simulation International, Vista, California, 2010.


Symposium, C. Ribbens, A. Sandu, W.I. Thacker editors, Society for Modeling and Simulation

International, Vista, California, 2009.

3. Proceedings of the 2009 ACM symposium on Applied Computing, Computational Sciences

Track, A. Sandu and Y, Cao editors, 2347 pages,ISBN:978-1-60558-166-8, Association for

Computing Machinery, New York, NY, 2009.


Symposium, M. Sosonkina, T. Haupt, C. Shaffer, and A. Sandu editors, Society for Modeling

and Simulation International, Vista, California, 2008.



Track, A. Sandu editor, 1733 pages, ISBN:1-58113-812-1, Association for Computing Machin-



Track, A. Sandu editor, 1268 pages, ISBN:1-58113-624-2, Association for Computing Machin-


Invited Presentations

1. Workshop Verwer65 on numerical integration of ODEs and PDEs. Amsterdam, January

14-19, 2011l

2. NASA Goddard, September 2010.

3. Foothillls Lab, National Center for Atmospheric Research, March 2010.

4. University of Colorado, Computer Science Department, March 2010.

5. Colorado State University, Mathematics Department, February 2010.

6. Data Assimilation Workshop at NOAA, Boulder, Colorado, December 2009.

7. WRF-Chem Workshop, Boulder, Colorado, January 2009.

8. SANDIA CSRI Workshop on large Scale Inverse Problems and Quantification of Uncertainty,

Santa Fe, September 2007.

9. NASA Langley (Dynamics and Control Division), July 12, 2007.

10. Harvard University – Third GEOS-Chem users meeting, April 11, 2007.

11. NASA Langley (Atmospheric Chemistry Division), March 28, 2007.

12. International Conference on Atmospheric Chemical Mechanisms, University of California at

Davis, December 6–8, 2006.

13. NASA JPL (TES group science meeting), November 13, 2006.

14. NASA Langley (Control and Dynamics Division), October 24, 2006.

15. Atmospheric Chemistry Modeling Group, Harvard University, May 19, 2006.

16. Mathematics and Statistics Department, Portland State University, April 12-15, 2006.

17. Center for Advanced Air Quality Studies, University of Houston, Feb. 14-17, 2006.


18. Jet Propulsion Laboratory, February 7-9, 2006.

19. NSF DDDAS Workshop, January 19-20, 2006.

20. Workshop on Chemical Data Assimilation and Data Needs for Air Quality Forecasting, Silver

Spring, MD, June 20-22, 2005.

21. Florida State University, Feb. 20, 2005.

22. Oak Ridge National Laboratory, Nov. 14, 2004.

23. Environmental Protection Agency, Nov. 7, 2004.

24. National Institute of Science and Technology, May 25, 2004.

25. Mechanical Engineering Department, Rensselaer Polytechnic Institute, Feb. 6, 2004.

26. Computer Science Department, University of Illinois, 2003.

27. Computer Science Department, Clemson University, 2003.

28. Computer Science Department, University of Missouri, Columbia, 2002 .

29. Computer Science Department, Oklahoma State University, 2002.

30. Mathematics and Statistics Department, University of Maryland Baltimore County, April

2001.

31. TASC symposium, the Center for Mathematics and Computer Science (CWI), Amsterdam,

1996.

32. Institut Francais du Petrole, Paris, September 1995.

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