Talks
This page contains some of my recent talks, in reverse order.2012
- 29.03.12 University of Greenwich, Leslie Comrie Seminar Series (website): Regularisation methods in data assimilation. (invited)
- 06.03.12 5th International Conference on High Performance Scientific Computing, Hanoi, Vietnam (website): Solving Matrix Nearness Problems using the Implicit Determinant Method.
- 03.02.12 University of Bath, Postgraduate Away Day 2012: How to write a good (maths) Ph.D. thesis. Here is the handout and here are the thesis templates and HD forms.
2011
- 24.10.11 RICAM Linz, Austria, Workshop on Large-Scale Inverse Problems and Applications in the Earth Sciences as part of the Special Semester on Multiscale Simulation and Analysis in Energy and the Environment: Resolution of sharp fronts in the presence of model error in variational data assimilation.
- 23.08.11 17th ILAS Conference, Braunschweig, Germany: (website): Tikhonov Regularisation for Large Inverse Problems. (invited plenary)
- 18.07.11 ICIAM 2011, Vancouver, Canada: Minisymposium MS49: Variational Data Assimilation (website): Regularization in Variational Data Assimilation. (invited) And this is me enjoying the view five minutes before giving the talk.
- 15.06.11 Householder Symposium XVIII, Tahoe City, California (invited plenary) (website): A new algorithm for calculating the distance to instability and the distance to a nearby defective matrix. (invited plenary)
- 26.05.11 University of Warwick, Workshop on Inverse Problems and Optimal Control for PDEs (website): Resolution of sharp fronts in the presence of model error in variational data assimilation. (invited plenary)
- 03.05.11 Max-Planck-Institute for Dynamics of Complex Technical Systems Magdeburg, Germany, CSC Seminar (website): Preconditioned inverse iteration and shift-invert Arnoldi method. (invited)
- 18.01.11 University of Bath, The Vice-Chancellor's research day (website): Challenges in Data Assimilation for Numerical Weather Prediction. (invited)
- 13.01.11 University of Bath, Postgraduate Away Day 2011: Writing your Ph.D. thesis. Here are the templates.
2010
- 20.10.10, University of Bristol, Statistics Seminar (website): Resolution of sharp fronts in the presence of model error in variational data assimilation. (invited)
- 16.09.10, Oxford University, Workshop on Optimization, Design and Control (website): Resolution of sharp fronts in the presence of model error in variational data assimilation. (invited)
- 07.09.10 K.U. Leuven, Belgium, Seminars on Optimization in Engineering (website): Solving matrix nearness problems using the implicit determinant method. (invited)
- 13.05.10 Bath Race Course, Postgraduate Away Day 2010: Writing a Research Paper in Mathematics.
- 23.03.10 Universität Karlsruhe, 81st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) (website): Resolution of sharp fronts in the presence of model error in variational data assimilation.
- 18.03.10 Universität Siegen, Oberseminar Geomathematik (website): Resolution of sharp fronts in the presence of model error in variational data assimilation. (invited)
- 11.02.10 Rutherford Appleton Laboratory, Computational Mathematics and Applications Seminar (website): Resolution of sharp fronts in the presence of model error in variational data assimilation. (invited)
- 01.02.10 UK MetOffice, Exeter (website), Exeter - Bath - Met Office meeting: Resolution of sharp fronts in the presence of model error in variational data assimilation
- 29.01.10 University of Bath, Postgraduate Away Day 2010: Writing your Ph.D. thesis. Here are the templates which you are welcome to use.
2009
- 23.11.09 University of Exeter, Applied Mathematics Seminar at SECaM (website): Data Assimilation in Numerical Weather Prediction: 4DVar and links to other regularisation methods (invited)
- 06.11.09 University of Bath, Informal Statistics Seminar: Data Assimilation in Numerical Weather Prediction: 4DVar and links to other regularisation methods
- 23.10.09 University of Bath, Numerical Analysis Seminar (website): The calculation of the distance to instability by the computation of a Jordan block
- 28.09.09 University of Bath, Exeter - Bath - Met Office meeting: Data Assimilation in Numerical Weather Prediction: 4DVar and links to other regularisation methods
- 15.09.09 University of Bath, BICS Workshop The Future for Complexity Science (website): Data Assimilation in Numerical Weather Prediction: 4DVar and links to other regularisation methods
- 11.08.09 Oberwolfach, Germany, Workshop on Linear and Nonlinear Eigenproblems for PDEs (website): The calculation of the distance to instability by the computation of a Jordan block (invited)
- 15.07.09 Johann Radon Institute, Johannes Kepler University Linz, Austria, Chemnitz-RICAM-Symposium on Inverse Problems (website): Data Assimilation in Numerical Weather Prediction: 4DVar and links to other regularisation methods (invited)
- 23.06.09 University of Strathclyde, 23rd Biennial Conference on Numerical Analysis (website): L1 Regularisation in Data Assimilation with 4DVar
- 28.04.09 Bath Racecourse, Postgraduate Away Day 2009: Working in Academia after your Ph.D.
- 27.03.09 University of Manchester, Numerical Analysis and Scientific Computing Seminar (website): Data assimilation in numerical weather prediction: 4D-Var and links to other regularisation methods (invited)
- 10.03.09 Lorentz Center, Leiden, The Netherlands: Mathematical challenges in climate science (website): Different Regularisation Techniques for Four Dimensional Data Assimilation (Poster)
- 03.03.09 UK MetOffice, Exeter: L1-regularisation in 4D-Var
- 27.02.09 University of Bath, Numerical Analysis Seminar (website): Preconditioners for saddle point problems
2008
- 16.12.08 University of Reading: NCEO Reading/Warwick Data Assimilation Workshop: L1-regularisation in 4D-Var
- 23.09.08 University of Bath: Bath - RAL Numerical Analysis Day (website): Data assimilation using 4D-Var and links to regularisation
- 16.09.08 Fry Club (Cadbury Factory), BICS Away Day: GWR presentation: Introduction to Data Assimilation
- 22.08.08 University of Bath: Department of Electronic & Electrical Engineering: INVERT Centre (website): Introduction to Data Assimilation with 4D-Var and its relation to Tikhonov regularisation
- 15.07.08 Durham: LMS Durham Symposium (website): Computational Linear Algebra for Partial Differential Equations: Shift-invert Arnoldi method with preconditioned iterative solves (invited)
- 03.06.08 Zeuthen, Germany: Householder Symposium XVII (website): Inexact preconditioned shift-and-invert Arnoldi's method and implicit restarts for eigencomputations (invited)
- 10.04.08 Copper Mountain, Colorado, USA: 10th Copper Mountain Conference on Iterative Methods (website): Rayleigh quotient iteration and simplified Jacobi-Davidson method with preconditioned iterative solves (Student Paper Prize talk, invited plenary)
- 27.03.08 University of Exeter, Exeter - Bath - Met Office meeting (website): Data Assimilation applied to the Three-Body-Problem
- 12.02.08 Bath, Postgraduate Seminar Series (website): The Mathematics of Image processing
- 08.02.08 University of Bath, Numerical Analysis Seminar (website): Mathematics of Data Assimilation
- 06.02.08 University of Bath, BICS Meeting (website): The Maths of Complex Systems Mathematics of Data Assimilation - Complex Systems in Numerical Weather Prediction
2007
- 25.09.07 Rutherford Appleton Laboratory, Bath - RAL Numerical Analysis Day (website): Inexact Preconditioned Shift-and-Invert Arnoldi's Method and Implicit Restarts for Eigencomputations (Poster)
- 06.09.07 Bath, BICS Conference: Numerical Analysis: Multiscale Methods, Adaptivity & Complexity, University of Bath (website): Inexact Shift-and-Invert Arnoldi's Method and Implicit Restarts with Preconditioning for Eigenproblems
- 24.08.07 Harrachov, Czech Republic, Computational Methods with Applications, Harrachov 2007 (website): Inexact Shift-and-Invert Arnoldi's Method and Implicit Restarts with Preconditioning for Eigenproblems
- 26.06.07 Dundee, 22nd Biennial Conference on Numerical Analysis: New Preconditioning Strategies for Eigenvalue Problems
- 17.04.07 Bath, Postgraduate Seminar Series: The Mathematics behind compressing, blurring and deblurring images
- 23.02.07 Bath, Numerical Analysis Seminar: Inexact inverse iteration for the generalised nonsymmetric eigenproblem - Convergence, Preconditioning and Comparison to Jacobi-Davidson
- 10.02.07 University of Bath, Royal Institution Mathematics Masterclass: Mathematical Puzzles
2006
- 28.11.06 University of Maryland, College Park, Maryland, USA: Preconditioners for Inexact Inverse Iteration
- 22.05.06 Penn State University, University Park, Pennsylvania, USA: IWASEP VI: A Tuned Preconditioner for Inexact Inverse Iteration Applied to Hermitian Eigenvalue Problems
- 24.03.06 Reading, Bath/Brunel/Imperial/Oxford/Reading Numerical Analysis Postgraduate Seminar Day: Inexact inverse iteration as an inner-outer iterative method: error analysis and tuned preconditioning
- 21.03.06 Bath, Postgraduate Informal Seminar Series: Inner-outer iterative methods for large sparse Eigenvalue computations
- 19.01.06 Leipzig, 22nd GAMM-Seminar on Large Scale Eigenvalue Computations: Inexact inverse iteration and tuned preconditioning
- 13.01.06 Bath, Graduate School Numerical Linear Algebra: Lanczos' and Arnoldi's method, Handout, Slides
2005
- 09.12.05 Bath, Numerical Analysis Seminar: Solution of a constraint generalised eigenvalue problem using the inexact Shift-and-Invert Lanczos method
- 27.09.05 Rutherford Appleton Laboratory, Bath - RAL Numerical Analysis Day: A tuned preconditioner for Hermitian eigenproblems (Poster)
- 30.06.05 Dundee, 21st Biennial Conference on Numerical Analysis: A tuned preconditioner for inexact inverse iteration applied to Hermitian eigenvalue problems
- 24.05.05 Bath, Course on Eigenvalue Algorithms: The Jacobi-Davidson method
- 22.04.05 Bath, Numerical Analysis Seminar: An Introduction to Arnoldi's method and Implicit Restarts
- 15.03.05 Bath, Course on Eigenvalue Algorithms: Introduction on Eigenvalue Theory
2004
- 08.10.04 Bath, Numerical Analysis Seminar: On the Influence of Multiplication Operators on the Ill-posedness of Inverse Problems
- 24.09.04 TU Chemnitz, Diplomverteidigung (for Diploma thesis see here ): On the Influence of Multiplication Operators on the Ill-posedness of Inverse Problems
- 23.09.04 TU Chemnitz, Minisymposium Inverse Probleme 2004: Numerical approaches to singular value asymptotics for specific integral operators
- 13.01.04 TU Chemnitz, Forschungsseminar Numerik: Transcritical flow modelling with the Box Scheme
2003
- 28.07.03 Bath, MSc Project Presentation: Transcritical flow modelling with the Box Scheme