58 results on '"Sandu, Adrian"'
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2. A unified formulation of splitting-based implicit time integration schemes
3. Multirate implicit Euler schemes for a class of differential–algebraic equations of index-1
4. Alternating directions implicit integration in a general linear method framework
5. Linearly implicit GARK schemes
6. Machine learning based algorithms for uncertainty quantification in numerical weather prediction models
7. Partitioned exponential methods for coupled multiphysics systems
8. Subspace adaptivity in Rosenbrock–Krylov methods for the time integration of initial value problems
9. Evaluating oil and gas contributions to ambient nonmethane hydrocarbon mixing ratios and ozone-related metrics in the Colorado Front Range
10. Convergence results for implicit–explicit general linear methods
11. Efficient implementation of partitioned stiff exponential Runge-Kutta methods
12. Biorthogonal Rosenbrock-Krylov time discretization methods
13. A parallel implementation of the ensemble Kalman filter based on modified Cholesky decomposition
14. Modeling and sensitivity analysis methodology for hybrid dynamical system
15. A tiered, system-of-systems modeling framework for resolving complex socio-environmental policy issues
16. Parametric domain decomposition for accurate reduced order models: Applications of MP-LROM methodology
17. A numerical investigation of matrix-free implicit time-stepping methods for large CFD simulations
18. An Effcient Implementation of the Ensemble Kalman Filter Based on Iterative Sherman Morrison Formula
19. Novel organic photovoltaic polymer blends: A rapid, 3-dimensional morphology analysis using backscattered electron imaging in the scanning electron microscope
20. Analytical Jacobian-vector products for the matrix-free time integration of partial differential equations
21. A time-parallel approach to strong-constraint four-dimensional variational data assimilation
22. A derivative-free trust region framework for variational data assimilation
23. Application of approximate matrix factorization to high order linearly implicit Runge–Kutta methods
24. Parallel Solution of DDDAS Variational Inference Problems
25. Exponential-Krylov methods for ordinary differential equations
26. An optimization framework to improve 4D-Var data assimilation system performance
27. Space–time adaptive solution of inverse problems with the discrete adjoint method
28. Low-rank approximations for computing observation impact in 4D-Var data assimilation
29. An adjoint-based scalable algorithm for time-parallel integration
30. A Posteriori Error Estimates for DDDAS Inference Problems
31. Dynamic Sensor Network Configuration in InfoSymbiotic Systems Using Model Singular Vectors
32. Variational chemical data assimilation with approximate adjoints
33. An Adjoint Based Implementation of the Parareal Algorithm
34. A Second-order Diagonally-Implicit-Explicit Multi-Stage Integration Method
35. Continuous versus discrete advection adjoints in chemical data assimilation with CMAQ
36. On the adaptive solution of space–time inverse problems with the adjoint method
37. On the discrete adjoints of adaptive time stepping algorithms
38. Regional NOx emission inversion through a four-dimensional variational approach using SCIAMACHY tropospheric NO2 column observations
39. Uncertainty quantification and apportionment in air quality models using the polynomial chaos method
40. Efficient uncertainty quantification with the polynomial chaos method for stiff systems
41. Forward and adjoint sensitivity analysis with continuous explicit Runge–Kutta schemes
42. Discrete second order adjoints in atmospheric chemical transport modeling
43. Predicting air quality: Improvements through advanced methods to integrate models and measurements
44. Assessment of ensemble-based chemical data assimilation in an idealized setting☆
45. Adjoint sensitivity analysis of regional air quality models
46. Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: Part I—theory and software tools
47. Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: II—numerical validation and applications
48. A framework for the numerical treatment of aerosol dynamics
49. The kinetic preprocessor KPP-a software environment for solving chemical kinetics
50. A communication library for the parallelization of air quality models on structured grids
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