## Presentations

### Conference, Workshop and Seminar

Research Presentations since September 2000

## 2023

- [Workshop] New Directions in Applied Linear Algebra (23w5004) Banff International Research Station for Mathematical Innovation and Discovery, 27 Aug - 1 Sep, 2023.
- [Conference] 29th Biennial Numerical Analysis Conference Strathclyde, 27-30 June 2023.
- [Workshop] 19th Workshop on Numerical Methods for Problems with Layer Phenomena, 25-27 May, 2023. Charles University, Prague.

## 2022

- [Conference] 2022 Annual Meeting of the Irish Mathematical Society, 1-2 September, TU Dublin.
- [Conference] 24th Conference of the International Linear Algebra Society. 20-24 June. Galway. Also organised the minisymposium Numerical linear algebra for PDEs
- [Workshop] 18th Workshop on Numerical Methods for Problems with Layer Phenomena. 24-26 March. FernUniversität in Hagen.

## 2021

- [Conference] Numerical Methods and Scientific Computing. Centre International de Rencontres Mathematiques, 8–12 November, 2021. (Online)

## 2020

- [Conference] International Conference on Advances in Differential Equations and Numerical Analysis (ADENA) Indian Institute of Technology Guwahati, India. (Online)

## 2019

- [Conference: Plenary Speaker] International Workshop And Conference On Mathematical Analysis And Computation (IWCMAC 2019). NIT Trichy, Tamil Nadu, India, 02-06 December 2019
- [Conference] 28th Biennial Numerical Analysis Conference Strathclyde, 25-28 June 2019.
- [Conference] 17th European Finite Element Fair University of Cyprus, 17-18 May, 2019.
- [Workshop] 16th Annual Workshop on Numerical Methods for Problems with Layer Phenomena, Sevilla, 14-15 February, 2019.

## 2018

- [Workshop] Adaptive Numerical Methods for Partial Differential Equations with Applications , Banff International Research Station for Mathematical Innovation and Discovery, 17 May - 1 June, 2018. (Participant).
- [Seminar] Computational and Applied Mathematics Seminar, Memorial University of Newfoundland. 17 May 2018.
- [Seminar] Bejing Computational Science Research Centre 15 Janurary, 2018.

## 2017

- [Workshop] Short Term Course On Theory and Computation of Singularly Perturbed Differential Equations, organised by Department of Mathematics, IIT (BHU), Varanasi Supported by MHRD under GIAN (Global Initiative for Academic Networks). I delivered a short course on Theory and Computation of Singularly Perturbed Problems, along with Dr Sunil Kumar and Prof. L.P. Singh.
- [Workshop] The 3rd Irish Linear Algebra and Matrix Theory Meeting, Maynooth University Department of Mathematics & Statistics, 8th September (contributed talk).
- [Conference] 27th Biennial Numerical Analysis Conference Strathclyde, 27-30 June 2017. With Natalia Kopteva and Torsten Linß, I am organising a mini-symposium on Advances in the robust solution of singularly perturbed differential equations.
- [Workshop] 14th Annual Workshop on Numerical Methods for Problems with Layer Phenomena at NUI Galway, 6-7 April, 2017 (main organiser).

## 2016

- [Conference] 2016 UL SIAM Student Conference, 7 December, University of Limerick (plenary talk).
- [Workshop and Short Course] 2016 AARMS-CRM Workshop on Numerical Analysis of Singularly Perturbed Differential Equations. 25-29 July, Halifax, Nova Scotia. I gave a short course on Numerical Analysis of Singularly Perturbed Problems.
- [Seminar] FernUniversität in Hagen. 23 May, 2016.
- [Conference] The 14th European Finite Element Fair, 20-21 May, 2016. Universiatät Bonn.

## 2015

- [Seminar] Applied and Computational Mathematics Seminars, University College Dublin, 9 December, 2015.
- [Conference] 26th Biennial Numerical Analysis Conference Strathclyde, 23-26 June 2015. With Martin Stynes, I organised a mini-symposium on Singularly perturbed differential equations.
- [Workshop] 12th Annual Workshop on Numerical Methods for Problems with Layer Phenomena (dedicated to the 65th birthday of Hans-Görg Roos). Thursday, 9th - Friday, 10th April 2015. TU Dresden.
- [Seminar] MACSI Seminar Series, Department of Mathematics and Statistics, University of Limerick, 27 March 2015.

## 2014

- [Conference]
*Sparse grid finite element methods for boundary layers problems*Joint Symposium Irish Mechanics Society and the Irish Society for Scientific Engineering & Computation (ISSEC). 8-9 of December, 2014, NUI Galway. - [Workshop]
*Linear solvers for a singularly perturbed problem*. 2nd Irish Linear Algebra and Matrix Theory Meeting, 29 August 2014, School of Mathematical Sciences. (Invited speaker). - [Seminar]
*Sparse grid finite element methods for a two-dimensional reaction-diffusion problem*, T.U. Dresden. 29 April, 2014. - [Workshop]
*A first-order system Petrov-Galerkin discretization for solving a reaction-diffusion problem*. 11^{th}Annual Workshop on Numerical Methods for Problems with Layer Phenomena, Novi Sad, 20-21 March, 2014. - [Student conference]
*An introduction to the numerical solution of singularly perturbed differential equations*. Irish Mathematical Student Association Annual Meeting, NUI Maynooth, 7-9 March, 2014. (Invited speaker) - [Conference]
*Singularly perturbed differential equations are difficult to solve numerically, except when they are not*. The annual meeting of SIAM UKIE, the UK & Republic of Ireland section of SIAM, University College London, 9^{th}January 2014. (Invited speaker).

## 2000-2013

- [Conference]
*A boundary layer preconditioner for a singularly perturbed problem*. 25^{th}Biennial Numerical Analysis Conference Strathclyde, Jun 25^{th}-28^{th}2013. - [Workshop]
*Robust solution of singularly perturbed problems using multigrid methods*. 10^{th}Annual Workshop on Numerical Methods for Problems with Layer Phenomena, Cyprus, May 23^{rd}-24^{th}2013. - [Seminar]
*Post-processing of one-dimensional finite element solutions to convection-diffusion problems*, NUI Galway Research Day, April 2012. - [Seminar]
*Optimal time-stepping for tidal simulations*, The Ryan Institute Talks n' Treats seminar series, 27 April 2012 - [Conference]
*A Schwarz-type method for a coupled system of singularly perturbed problems*, BAIL: International Conference on Boundary and Interior Layers-- Computational and Asymptotic Methods POSTECH, Korea, February 6th--10th, 2012 - [Seminar]
*Cholesky, Taussky, Todd, Toeplitz and Turing: A story of love, death, wars, and matrix factorisations*NUI Galway Mathematics Society, 25 Nov 2011. slides. - [Conference]
*Linear Solvers for Singularly Perturbed Problems*, Numerical Analysis for Singularly Perturbed Problems (dedicated to the 60th birthday of Martin Stynes). TU Dresden, 16--18Nov, 2011. - [Seminar]
*Fast solvers for singularly perturbed problems*, Mathematics Seminar, NUI Galway, 20 Oct 2011. - [Conference]
*Improved Numerical Modelling of Dispersion of Pollutants in Tidal Regions*, ICIAM, (7th International Congress on Industrial and Applied Mathematics), Vancouver, 18--22 July 2011. - [Conference]
*Numerical Simulation of an Advection Diffusion Problem in Tidal Regions*, Numerical Methods for Incompressible Fluid Flow, Applied Mathematics Perspectives, University of British Columbia, Vancouver, 14--16 July, 2011. - [Seminar]
*Schwarz methods for coupled systems of singularly perturbed problems*, Mathematisches Kolloquium, Universitat Duisburg-Essen 24 May 2011, - [Seminar]
*Layer resolving methods for singularly perturbed problems*Chinese Academy of Sciences Beijing, 22 March 2011. - [Seminar]
*Numerical Solution of Singularly Perturbed Coupled Problems*, Department of Mathematics Seminar, University of Auckland, 24 Feb 2011. - [Seminar]
*The numerical simulation of some ODEs arising in glycemia models*, Auckland Numerical Analysis Workshop, 17 Feb 2011.

- [Seminar]
*Robust numerical methods for singularly perturbed problems*, IMA Postdoc Seminar, University of Minnesota, 9th Nov 2010 - [Workshop]
*Computational aspects of a two-scale finite element method for singularly perturbed problem*, Numerical Solutions of Partial Differential Equations: Novel Discretization Techniques, Institute for Mathematics and Its Applications, University of Minnesota, 1-5 November, 2010. (Poster presentation) - [Workshop]
*Derivation of DBN Structure from Expert Knowledge in the Form of Systems of ODEs*, Computing with Uncertainty: Mathematical Modeling, Numerical Approximation and Large Scale Optimization of Complex Systems with Uncertainty Institute for Mathematics and Its Applications, University of Minnesota, 18-22 October, 2010. (Poster presentation) - [Conference]
*A computational study of a fluid flow problem featuring an interior layer*, Boundary and Interior Layers, Zaragoza, July 2010. - [Conference]
*An alternating direction method for a singularly perturbed reaction-diffusion problem*, 23rd Biennial Conference on Numerical Analysis, University of Strathclyde, 23-26 June 2009. - [Conference]
*The numerical solution of a system of singularly perturbed reaction-diffusion equations by a domain decomposition technique*, British Mathematics Colloquium, NUI Galway, 06-09 April 2009 - [Workshop]
*Computational aspects of a two-scale finite element method for reaction-diffusion equations*, 7th Annual Workshop on Numerical Methods for Problems with Layer Phenomena, University of Limerick, 22-23 Jan, 2009. - [Conference]
*Overlapping Schwarz techniques for coupled systems of reaction-diffusion equations*, BAIL 2008, UL, 28 July-01 Aug 2008

- [Seminar]
*The numerical analysis of systems of singularly perturbed differential equations*, Seminar, NUI Galway, 01 Nov 2007 - [Seminar]
*The numerical analysis of systems of singularly perturbed differential equations*, Seminar, Dublin City University, 08 March 2007. - [Workshop]
*On the numerical solution of a system of*6th Annual Workshop on Numerical Methods for Problems with Layer Phenomena, University of Limerick. 08-09 Feb 2007.*M*singularly perturbed reaction-diffusion equations in two dimension, - [Conference]
*A parameter-robust numerical method for a coupled system of two dimensional reaction-diffusion equations.*4th Conference on Finite Difference Methods, Lozenetz, Bulgaria, 26-29 August 2006. - [Workshop]
*On an overlapping Schwarz method for a system of singularly-perturbed reaction-diffusion equations,*5th Annual Workshop on Numerical Methods for Problems with Layer Phenomena, University of Limerick, 9-10 Feb 2006. *On a parameter-uniform Schwartz scheme for a system of singularly-perturbed differential equations.*21st Biennial Conference on Numerical Analysis, University of Dundee, Scotland, UK Tuesday 28th June - Friday 1st July, 2005

- [Conference]
*What Mathematics should a mathematician know?*, The Second Irish Symposium for Undergraduate Mathematics Education, UCD, 10-11 December, 2004. - [Conference]
*On the application of robust numerical methods to a complete flow wave-current model,*with Martin Stynes and Garth Thomas, Boundary and Interior Layers, Toulouse, 05-09 July 2004. - [Seminar]
*Singularly Perturbed differential equations: applications and numerical solution*, University of Limerick, 19 Oct 2004. - [Seminar]
*Mesh equidistribution for reaction-diffusion problems*, Numerical Mathematics Seminar, TU Dresden, 11 May 2004. - [Workshop]
*On equidistribution for reaction-diffusion problems. Workshop on problems with boundary-layer phenomena*, 12-13 Feb 2004. - [Seminar]
*Coupled systems of differential equations: Analysis, Numerical methods and Applications.*Applied Mathematics Seminar, UCC, Feb 26, 2004. - [Conference]
*Uniform convergence of a finite difference scheme for a system of coupled reaction-diffusion equations*, 20th Biennial Conference on Numerical Analysis University of Dundee, 24--27 June, 2003. - [Seminar]
*Robust numerical solution of systems of coupled singularly perturbed reaction-diffusion equations*, Seminar University of Limerick, Nov 2002. - [Seminar]
*Accurate solution of systems of singularly perturbed reaction-diffusion equations*, Seminar TU Dresden. April 2002. - [Workshop]
*A fitted mesh for a system of two linear singularly perturbed problems*, INCA Workshop on Numerical Methods for Singularly Perturbed Differential Equations, University of Limerick. Jan 2002. - [Seminar]
*Numerical methods for systems of differential equations*, seminar, Dep of Mathematics, NUI Galway. Nov 2000.