Postdoctoral Research Associate (working with Prof. Howard Elman).
University of Maryland,
College Park, MD 20742, USA.
Ph.D in Economics Justus Liebig University Giessen, Germany, 2010.
Diplome d'Universite Mathematical Models in Economics and Finance University of Paris 1 (La Sorbonne), 2007.
M.Sc in Physical and Mathematical Analysis University of Stellenbosch, South Africa, 2006.
B.Sc in Mathematics Michael Okpara University of Agriculture Umudike, Nigeria, 2003.
Course code and title: CMSC/AMSC 460 (Section 0101), Computational Methods
Instructor: Dr. Akwum Onwunta
Lecture venue: William E. Kirwan Hall, Room 0405
Time: Monday, Wednesday and Friday, 2:00 pm - 2:50 pm
Instructor's office: A.V. Williams Building, Room 3269
Office hours are by appointment via e-mail (firstname.lastname@example.org) only.
Supplementary material on Gaussian Quadrature
P. Benner, A. Onwunta, and M. Stoll, On the existence and uniqueness of the solution of a parabolic optimal control problem with uncertain inputs, 2018
P. Benner, A. Onwunta, and M. Stoll, A low-rank inexact Newton-Krylov method for stochastic eigenvalue problems, Computational Methods in Applied Mathematics, 2018
P. Benner, S. Dolgov, A. Onwunta, and M. Stoll, Solving optimal control problems governed by random Navier-Stokes equations using low-rank methods, 2017
P. Benner, A. Onwunta, and M. Stoll, Low-rank solvers for unsteady Stokes-Brinkman optimal control problem with random data, Computer Methods in Applied Mechanics and Engineering, 304, pp. 26 - 54, 2016
P. Benner, A. Onwunta, and M. Stoll, Block-diagonal preconditioning for optimal control problems constrained by PDEs with uncertain inputs, SIAM Journal on Matrix Analysis and Applications, 37 (2), pp. 491-518, 2016
P. Benner, A. Onwunta, and M. Stoll, Low-rank solution of unsteady diffusion equations with stochastic coefficients, SIAM/ASA Journal on Uncertainty Quantification, 3 (1), pp. 622 - 649, 2015
M. Lyra, A. Onwunta, and P. Winker, Threshold Accepting for credit risk assessment and validation, Journal of Banking Regulation, 16 (2) pp. 130 - 145, 2015
M. Kalkbrener and A. Onwunta, Validating structural credit portfolio models, In D. Roesch, and H. Scheule (eds.) Model Risk: Identification, Measurement and Management, pp. 233 - 261, Risk Books, London, 2010.
A. Onwunta, Contributions to credit portfolio modeling and optimization, Peter Lang AG - International Academic Publishers, Frankfurt, Germany, 2011.
A. Onwunta, Low-rank iterative solvers for large-scale stochastic Galerkin linear systems, Ph.D Thesis in Applied Mathematics, MPI Magdeburg and Otto von Guericke University Magdeburg, Germany, 2016.
A. Onwunta, On the regularity of refinable functions, Master's Thesis, University of Stellenbosch, South Africa, 2006.