Computational Science Laboratory
"Inspired Computational Solutions"

Selected Publications

Course Notes

Journal Papers

  • (pdf file) E. Blanchard, A. Sandu, and C. Sandu: "Polynomial Chaos Based Parameter Estimation Methods for Vehicle Systems". Journal of Multi-body dynamics, in print, 2009.

  • (pdf file) T. Chai, G.R. Carmichael, Y. Tang, and A. Sandu: "Regional NO2 emission inversion through four-dimensional variational approach using SCIAMACHY tropospheric column observations". Journal of Geophysical Research, in print, 2009.

  • (pdf file) 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, p. 1-7, 2009.

  • (pdf file) 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.

  • (pdf file) 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, paper no. 1313, in print, 2009.

  • (pdf file) H. Cheng and A. Sandu: "Uncertainty Quantification in 3D Air Quality Models using Polynomial Chaoses". Environmental Modeling and Software, in print, doi:10.1016/j.envsoft. 2008.12.005, 2009.

  • (pdf file) M. Alexe and A. Sandu: "Forward and adjoint sensitivity analysis with continuous explicit Runge - Kutta schemes". Applied Mathematics and Computation, Vol. 208, No. 2, p. 328- 346, doi:10.1016/j.amc.2008.11.035, 2009.

  • (pdf file) A. Sandu and E.M. Constantinescu: "Multirate Adams Methods for Hyperbolic Equations". Journal of Scientific Computing, Vol. 38, No. 2, p. 229-249, doi:10.1007/ s10915-008-9235-3, 2009.

  • (pdf file) 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, in print, 2008.

  • (pdf file) 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, p. 5787-5804, 2008.

  • (pdf file) A. Sandu and L. Zhang: "Discrete Second Order Adjoints in Atmospheric Chemical Transport Modeling". Journal of Computational Physics, Vol. 227, Issue 12, p. 5949-5983, doi:10.1016/j.jcp.2008.02.011, 2008.

  • (pdf file) E.M. Constantinescu, A. Sandu, and G.R. Carmichael: "Modeling Atmospheric Chemistry and Transport with Dynamic Adaptive Resolution". Computational Geosciences, Vo. 12, No. 2, p. 133-151, doi:10.1007/s10596-007-9065-7, 2008.

  • (pdf file) 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, p. 769- 803, doi:10.1002/fld.1550, 2008.

  • (pdf file) 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, p. 26, 2008.

  • (pdf file) G.R. Carmichael, A. Sandu, T. Chai, D. Daescu, E.M. Constantinescu, and Y. Tang: "Predicting Air Quality: Improvements through Advanced Methods to Integrate Models and Measurements". Journal of Computational Physics (Special issue on predicting weather, climate and extreme events), Vol. 227, Issue 7, p. 3540-3571, 2008.

  • (pdf file) 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.

  • (pdf file) E.M. Constantinescu and A. Sandu: "Multirate Timestepping Methods for Hyperbolic Conservation Laws". Journal of Scientific Computing, Vol. 33, Issue 3, p. 239-278, doi: 10.1007/s10915-007-9151-y, 2007.

  • (pdf file) 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.

  • (pdf file) 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, Volume 133, Issue 626, p. 1229-1243, Online ISSN: 1477-870X, Print ISSN: 0035- 9009, July 2007 Part A.

  • (pdf file) E.M. Constantinescu, A. Sandu, T. Chai, and G.R. Carmichael: "Ensemble-based Chemical Data Assimilation. II: Covariance Localization". Quarterly Journal of the Royal Meteorological Society, Volume 133, Issue 626, p. 1245-1256, Online ISSN: 1477-870X, Print ISSN:0035-9009, July 2007 Part A.

  • (pdf file) 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 Dimensional Data Assimilation Experiments with ICARTT (International Consortium for Atmospheric Transport and Transformation) Ozone Measurements". Journal of Geophysical Research, Vol. 112, D12S15, doi:10.1029/2006JD007763, 2007.

  • (pdf file) 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, p. 18-36, 2007.

  • (pdf file) A. Hakami, J.H. Seinfeld, T. Chai, Y. Tang, G.R. Carmichael, and A. Sandu: "Adjoint Sensitivity Analysis of Ozone Non-attainment over the Continental United States". Environmental Science and Technology, DOI:10.1021/es052135g, 2006.

  • (pdf file) 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, p. 211-220 (10), Feb. 2006.

  • (pdf file) 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, DOI:10.1029/2005JD005883, 2006.

  • (pdf file) 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, p. 187-195, SRef-ID: 1680-7324/acp/2006-6-187, 2006.

  • (pdf file) A. Sandu: "Piecewise Polynomial Solutions of Aerosol Dynamics". Aerosol Science and Technology, Vol. 40, p. 1-13, 2006.

  • (pdf file) 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, p.2443-2465, 2006.

  • (pdf file) A. Sandu, C. Sandu, and M. Ahmadian: "Modeling Multibody Dynamic Systems With Uncertainties. Part I: Theoretical and Computational Aspects". Multibody System Dynamics, Vol. 15, No. 4, p. 369-391, DOI:10.1007/s11044-006-9007-5, 2006.

  • (pdf file) C. Sandu, A. Sandu, and M. Ahmadian: "Modeling Multibody Dynamic Systems With Uncertainties. Part II: Numerical Applications". Multibody System Dynamics, Vol. 15, No. 3, p. 245-266, DOI:10.1007/S11044--9008--4, 2006.

  • (pdf file) 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 Research, Vol. 110, No. D14, D14301, doi:10.1029/2004JD005671, 25 pages, 2005.

  • (pdf file) A. Sandu, W. Liao, 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, p. 1-18, DOI:10.1080/02786820500182289, 2005.

  • (pdf file) 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, p. 222-252, 2005.

  • (pdf file) 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.

  • (pdf file) 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 Geophysical Research - Atmospheres, Vol. 109, No. D19, D19S23, DOI:10.1029/2003JD004201,32 pages, July 2004.

  • (pdf file) 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.

  • (pdf file) 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, p. 263-272, 2003.

  • (pdf file) 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.

  • (pdf file) 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 Environment, Vol. 37, p. 5083-5096, 2003.

  • (pdf file) D. Daescu, A. Sandu, and G.R. Carmichael: "Direct and Adjoint Sensitivity Analysis of Chemical Kinetic Systems with KPP: II - Validation and Numerical Experiments", Atmospheric Environment, Vol. 37, p. 5097-5114, 2003.

  • (pdf file) A. Sandu and C. T. Borden: "A Framework for the Numerical Treatment of Aerosol Dynamics", Applied Numerical Mathematics, no. 45, p. 475-497, 2003.

  • (pdf file) V. Damian, A. Sandu, M. Damian, F. Potra, and G.R. Carmichael: "The Kinetic PreProcessor KPP - A Software Environment for Solving Chemical Kinetics", Computers and Chemical Engineering, Vol. 26, No. 11, p. 1567-1579, 2002.

  • (pdf file) 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, p. 3917-3930, 2002.

  • (pdf file) A. Sandu: "A Newton-Cotes Quadrature Approach for Solving the Aerosol Coagulation Equation", Atmospheric Environment, Vol. 36, no. 3, p. 583-589, 2002.

  • (pdf file) A. Sandu: "Positive Numerical Integration Methods for Chemical Kinetic Systems", Journal of Computational Physics, Vol. 170, p. 1-14, 2001.

  • (pdf file) D. Daescu, G.R. Carmichael, and A. Sandu: "Adjoint Implementation of Rosenbrock Methods Applied to Variational Data Assimilation Problems", Journal of Computational Physics, Vol. 165, p. 496-510, 2000.

  • (pdf file) 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, p. 549-557, 2000.

  • (pdf file) 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, p. 224-235, 1999.

  • (pdf file) 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, p. 74-113, 1999.

  • (pdf file) A. Sandu, J.G. Verwer, J.G. Blom, E.J. Spee, G.R. Carmichael and F.A. Potra: "Benchmarking stiff ODE solvers for atmospheric chemistry problems II: Rosenbrock methods" , Atmospheric Environment, Vol. 31, p. 3459-3472, 1997.

  • (pdf file) 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, p. 3151-3166, 1997.

  • (pdf file)L.O. Jay, A. Sandu, F.A. Potra and G.R. Carmichael: "Improved QSSA Methods for Atmospheric Chemistry Integration", SIAM Journal on Scientific Computing, Vol. 18, Issue 1, p. 182-202, 1997.

  • (pdf file) 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, p. 475-489, 1997.

  • (pdf file) 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 Modelling", Systems Analysis Modelling Simulation (currently named "International Journal of Systems Science"), Vol. 25, p. 75-105, 1996.

  • (pdf file) 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, p. 101-110, 1996.

Conference Papers

  • (pdf file) E. Blanchard et al., ASME IDETC 2009, San Diego, Sept. 2009.

  • (pdf file) A. Sandu and E.M. Constantinescu: "Multirate time integration of hyperbolic partial differential equations". Seventh International Conference on Numerical Analysis and Applied Mathematics ICNAAM 2009, 18-22 September 2009, Rethymno, Crete, Greece.

  • (pdf file) J.C. Linford, J. Michalakes, M. Vachharajani, and A. Sandu: "Multi-core Acceleration of Chemical Kinetics for Simulation and Prediction". Supercomputing 2009. November 14-20, 2009, Portland, Oregon.

  • (pdf file) 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, 30% acceptance), Lecture Notes on Computational Science vol. 5545, G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot editors, p. 293-301, Baton Rouge, Louisiana, May 25-27, 2009.

  • (pdf file) K. Singh and A. Sandu: "Improving GEOS-Chem model forecasts through profile retrievals from Tropospheric Emission Spectrometer". International Conference on Computational Science 2009 (ICCS 2009, 30% acceptance), Lecture Notes on Computational Science vol. 5545, G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot editors, p. 302-311, Baton Rouge, Louisiana, May 25-27, 2009.

  • (pdf file) T.Y. Gou and A. Sandu: "Chemical Data Assimilation with CMAQ: Continuous vs. Discrete Advection Adjoints". International Conference on Computational Science 2009 (ICCS 2009, 30% acceptance), Lecture Notes on Computational Science vol. 5545, G. Allen, J. Nabrzyski, E. Seidel, G.D. van Albada, J. Dongarra, and P.M.A. Sloot editors, p. 312-321, Baton Rouge, Louisiana, May 25-27, 2009.

  • (pdf file) 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". High Performance Computing Symposium (HPC 2009) at Spring Simulation Multiconference (SpringSim'09), San Diego, California, March 22-27, 2009.

  • (pdf file) 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". 14th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP), Raleigh, North Carolina, February 14-18, 2009.

  • (pdf file) H. Cheng and A. Sandu: "Uncertainty Apportionment for Air Quality Forecast Models". Computational Science Track, the 24th Annual ACM Symposium on Applied Computing ACM SAC 2009 (acceptance rate 29%), Hilton Hawaiian Village Beach Resort & Spa, Waikiki Beach, Honolulu, Hawaii, March 8-12, 2009.

  • (pdf file) J. Linford and A. Sandu: "3D Chemical Transport for the Cell Broadband Engine". Computational Science Track, the 24th Annual ACM Symposium on Applied Computing ACM SAC 2009 (acceptance rate 29%), Hilton Hawaiian Village Beach Resort & Spa, Waikiki Beach, Honolulu, Hawaii, USA, March 8-12, 2009.

  • (pdf file) A. Sandu and E.M. Constantinescu: "Extrapolation multirate methods for time integration". Congress of the European Consortium for Mathematics in Industry (ECMI 2008), London, U.K., June 30-July 5, 2008.

  • (pdf file) A. Sandu: "Chemical Data Assimilation: Computational Tools and Applications". 8th In- ternational Conference on HydroScience and Engineering (ICHE 2008), Nagoya, Japan, Sept.8-12, 2008.

  • (pdf file) A. Sandu and L. Zhang*: "Obtaining and Using Second Order Information in the Solution of Inverse Problems". Paper no. DETC2008/CIE-49242, ASME 2008 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. IDETC/CIE 2008 August 3-6, 2008, Brooklyn, New York, USA. (Paper accepted in final form; not included on the final CD due to administrative delays).

  • (pdf file) M. Lee, R. Weidner, K. Bowman,A. Sandu, and K. Singh: "Sensor-web Operations Explorer (SOX) for Integrated Air Quality Campaign". IEEE ECMI 2008, London, September 2008.

  • (pdf file) J.C. Linford and A. Sandu: "Optimizing Large Scale Chemical Transport Models for Multicore Platforms". Paper No. 30, High Performance Computing and Simulation Symposium 2008, April 14-16, 2008, Ottawa, Ontario, Canada.

  • (pdf file) A. Sandu: "Reverse Automatic Differentiation of Linear Multistep Methods". Paper No. 62, Fifth International Conference on Automatic Differentiation (AD 2008), August 11-15 2008, Bonn, Germany.

  • (pdf file) E.M. Blanchard, A. Sandu, and C. Sandu: "Parameter Estimation Method using an Extended Kalman Filter". Proceedings of the 2007 Asia-Pacific and North America Regional ISTVS Conference, Paper No. PI074, Fairbanks, Alaska, June 23-25 2007.

  • (pdf file) E.M. Blanchard, C.Sandu, and A.Sandu: "A Polynomial Chaos Based Bayesian Approach for Estimating Uncertain Parameters of Mechanical Systems". Proceedings of the ASME IDETC 2007, 9-th International Conference on Advanced Vehicle and Tire Technology, Paper No. DETC2007-34600, Las Vegas, Nevada, September 4-7 2007.

  • (pdf file) H.Cheng and A.Sandu: "Numerical Study of Uncertainty Quantification Techniques for Implicit Stiff Systems". The 45-th ACM Southeast Conference, Winston-Salem, North Carolina, March 23-24, 2007.

  • (pdf file) M.Alexe and A.Sandu:"An Investigation of Discrete Adjoints for Flux-Limited Numerical Schemes". The 45-th ACM Southeast Conference, Winston-Salem, North Carolina, March 23-24, 2007.

  • (pdf file) A. Srivastava, J.C.Linford, and A. Sandu:"Performance of Stabilized Explicit Time Integration Methods For Parallel Air Quality Models". High Performance Computing Symposium (HPC-2007), Norfolk,Virginia, March 25-29,2007.

  • (pdf file) A.Sandu, E.M.Constantinescu, G.R. Carmichael, T.Chai, J.H.Seinfeld, and Dacian Daescu:"Localized Ensemble Kalman Dynamic Data Assimilation for Atmosheric Chemistry". International Conference for Computational Science(ICCS-2007, acceptance rate 35%), Beijing, China, May 27-30, 2007.

  • (pdf file) L.Zhang and A.Sandu:"Data Assimilation in Multiscale Chemical Transport Models". International Conference for Computational Science(ICCS-2007, acceptance rate 35%), Beijing, China, May 27-30, 2007.

  • (pdf file) P. Miehe and A. Sandu: "Forward, Tangent Linear, and Adjoint Runge Kutta Methods in KPP--2.2". International Conference for Computational Science (ICCS-2006, acceptance rate 35%), Reading, U.K. V.N. Alexandrov et al. (Eds.): ICCS 2006, III, LNCS 3993, p. 120-127, Springer-Verlag Berlin Heidelberg, 2006.

  • (pdf file) A. Sandu: "Targeted Observations for Atmospheric Chemistry and Transport Models". International Conference for Computational Science (ICCS-2006, acceptance rate 35%), Reading, U.K. V.N. Alexandrov et al. (Eds.): ICCS 2006, Part I, LNCS 3991, p.712-719, Springer-Verlag Berlin Heidelberg, 2006.

  • (pdf file) A. Sandu: "On the Properties of Runge-Kutta Discrete Adjoints". International Conference for Computational Science (ICCS-2006, acceptance rate 35%), Reading, U.K. V.N. Alexandrov et al. (Eds.): ICCS 2006, Part IV, LNCS 3994, p.550-557, Springer-Verlag Berlin Heidelberg, 2006.

  • (pdf file) 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 Engineering Congress and Exposition, 7th Vehicle Dynamics and Controls Annual Symposium on Advanced Vehicle Technologies, Session 4: Advances in vehicle systems modeling and Simulation, paper no. IMECHE-2005-82101, 6 pages, Orlando, Florida, November 6-11, 2005.

  • (pdf file) C. Sandu, A. Sandu, and L. Lin: "Stochastic Modeling of Terrain Profiles and Soil Parameters", proceedings of the SAE Commercial Vehicle Engineering Congress and Exhibition, paper no. 2005-01-3559, 10 pages, Chicago, IL, November 1-3, 2005.

  • (pdf file) A. Sandu, E.M. Constantinescu, W. Liao, G.R. Carmichael, T. Chai, J.H. Seinfeld, and D. D\uaescu: "Ensemble-Based Data Assimilation for Atmospheric Chemical Transport Models". International Conference for Computational Science ICCS-2005, Atlanta, GA, May 2005. Springer Lecture Notes in Computer Science (LNCS), Vol. 3515, p. 648--655, Springer-Verlag GmbH, 2005.

  • (pdf file) 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, Atlanta, GA, May 2005. Springer Lecture Notes in Computer Science (LNCS), Vol. 3515, p. 798--805, Springer-Verlag GmbH, 2005.

  • (pdf file) W. Liao and A. Sandu: "Total Energy Singular Vectors for Atmospheric Chemical Transport Models". International Conference for Computational Science ICCS-2005, Atlanta, GA, May 2005. Springer Lecture Notes in Computer Science (LNCS), Vol. 3515, p. 806--813, Springer-Verlag GmbH, 2005.

  • (pdf file) Z. Liu and A. Sandu: "Analysis of Discrete Adjoints for Upwind Numerical Schemes". International Conference for Computational Science ICCS-2005, Atlanta, GA, May 2005. Springer Lecture Notes in Computer Science (LNCS), Vol. 3515, p. 829--836, Springer-Verlag GmbH, 2005.

  • (pdf file) E.M. Constantinescu, W. Liao, and A. Sandu: "Mesh refinement Strategies in Air Quality Modeling". High Performance Computing Symposium HPC-2005, April 2-8, 2005, San Diego, California.

  • 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 Detroit, April 11--14, 2005.

  • 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. IMECHE2004-60484, 9 pages, Annaheim, California, November 14-19, 2004.

  • 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, 6th annual symposium on advanced vehicle technology, paper no. IMECHE2004-60482,9 pages, Annaheim, California, November 14-19, 2004.

  • 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, Seattle, Washington, January 11-15, 2004.

  • 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, Seattle, Washington, January 11-15 , 2004.

  • (pdf file) 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 Conference for Computational Science(ICCS 2004), Krakow, Poland. Lecture Notes in Computer Science, Springer-Verlag GmbH, Vol. 3038, p. 709-716, 2004.

  • C. Belwal, A. Sandu, E.M. Constantinescu: "Adaptive Resolution Modeling of Air Pollution", ACM Symposium on Applied Computing (SAC-2004), p. 235-239, Nicosia, Cyprus, March 2004.

  • (pdf file) A. Sandu, D. Negrut, C. Sandu, E. J. Haug, F. A. Potra: "Rosenbrock Nystrom Integrator for SSODE of Mechanical Systems", Proceedings of ASME International (DETC-2003), paper no. VIB-48329, 8 pages, Chicago, Illinois, September 6-10, 2003.

  • (pdf file) G.R. Carmichael, D. Daescu, A. Sandu, and T. Chai: "Computational Aspects of Chemical Data Assimilation into Atmospheric Models",International Conference for Computational Science(ICCS03), Melbourne, Australia, June 2003. Springer Lecture Notes in Computer Science, Vol. 2660, p. 269-278, Springer-Verlag GmbH, 2003.

  • (pdf file) A. Sandu and C. T. Borden: "Discretization of Aerosol Dynamics with B-splines", ACM Symposium on Applied Computing (SAC-2003), p. 189--193, Melbourne, Florida, March 13-18 2003.

  • A. Sandu: "Computational Sciences Track Editorial", ACM Symposium on Applied Computing (SAC-2003), p. 141--142, Melbourne, Florida, March 13-18, 2003.

  • A. Sandu, D. Daescu and G.R. Carmichael: "Adjoint Data Assimilation for Aerosol Dynamics", B. Sportisse editor, Proceedings of 2nd International Conference on Air Polution Modeling and Simulation (APMS-2001),p. 319-331,Springer 2002.

  • J. F. Duff, P. Merkey and A. Sandu: "Parallel Molecular Dynamics Using MPI on a Scyld-style Beowulf Cluster", Proceedings of the 10th SIAM Conference on Parallel Processing for Scientific Computing, p. 272--279, Norfolk, Virginia, March 12-14, 2001.

  • D. Daescu, G.R. Carmichael, and A. Sandu: "Adjoint implementation of Rosenbrock methods applied to variational data assimilation", Millennium NATO/CCMS international technical meeting on air pollution modeling and its applications, American Meteorological Society, p. 346--354, Boulder, Colorado, May 15-19, 2000.

  • 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 Differentiation", Proceedings of International Conference on Air Pollution Modeling and Simulation(APMS-1998), Champs-sur-Marne, France, Oct. 1998.

  • 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 Mathematics (ICIAM-1995),Hamburg, Germany,July 1995. Special Issue of ZAMM, Issue 4: Applied Sciences, E.Kreuzer and O. Mahrenholtz eds., Akademie-Verlag, Berlin, p.450-453,1996.

  • 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 Publications of the European Communities, p. 49-51, L - 2985 Louxembourg, 1995.

Refereed Book Parts

  • (pdf file) A. Sandu : "Reverse Automatic Differentiation of Linear Multistep Methods". Advances in Automatic Differentiation, p. 1-12. Series: Lecture Notes in Computational Science and Engineering , Vol. 64. Bischof, C.H.; Bcker, H.M.; Hovland, P.; Naumann, U.; Utke, J. editors. Springer, 2008, XVIII, 370 p. 111 illus. ISBN: 978-3-540-68935-5.

  • (pdf file) A. Sandu: "Solution of inverse ODE problems using discrete adjoints", Inverse problems, O. Ghattas editor, John Wiley & Sons, 2009.

  • (pdf file) A. Sandu: "Time-Stepping Methods that Favor Positivity for Atmospheric Chemistry Modeling", IMA Volume 130: Atmospheric Modeling, D.P. Chock and G.R. Carmichael editors, Springer-Verlag, p. 21--38, 2002.

  • 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", NATO Advanced Study Institute on Computational Challenges in Air Pollution Modeling, Z. Zlatev editor, p. 99-136, 1999.

  • (pdf file) 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", Modeling and Simulation of Complex Environmental Problems, A. Sydow, G.R. Carmichael and G. Korn editors, Springer-Verlag, 1996.

  • G.R. Carmichael, A. Sandu, F.A. Potra, and V. Damian-Iordache: "An Overview of Sensitivity Analysis for Atmospheric Chemistry Models via Automatic Differentiation", Air Pollution IV - Monitoring, Simulation and Control, B. Caussade, H. Power and C.A. Brebbia editors, Computational Mechanics Publications, Southampton, Boston, 1996.

Computer Science Department

Virginia Polytechnic Institute and State University