SIAM UKIE National Student Chapter Conference

18-19 June 2018

The University of Bath SIAM-IMA Student Chapter is privileged to be hosting the SIAM UKIE National Student Chapter Conference in 2018. The conference will bring together students working in all areas of applied and industrial mathematics, and related fields, from across the UK and Ireland.

NEWS: Full conference programme now available.

NEWS: Registration deadline extended to Thursday 31st May. Posters still being accepted.

Submissions

Submissions for contributed talks and applications for funding are now closed.

We are still accepting posters. If you would like to present a poster, please note this in the registration form.

Registration

Registration is free. Please complete the registration form by Friday 18th May 2018 Thursday 31st May.

Please ensure that you register before the deadline if you want to attend, so that we have the correct numbers for catering purposes.

If you have any questions about the conference, you're welcome to email the Bath SIAM-IMA Student Chapter Committee.

We follow both the SIAM Statement on Inclusiveness and the IMA Diversity Statements, and we endeavour to create a welcoming and inclusive atmosphere at the conference, with a diverse range of participants. Students from groups which are underrepresented in the mathematical sciences are particularly encouraged to attend.

Programme

This is a summary of the programme. Download the full conference programme for more details, including talk and poster abstracts.

Monday 18th June Tuesday 19th June
08:30 — 09:00 COFFEE
4 West Atrium
09:00 — 10:15 SESSION 3A
Abdul Jumaat
Oliver Dunbar
Daoping Zhang

4 West 1.2
SESSION 3B
Aoife Hill
Hannah Conroy Broderick
Paul Greaney

Wolfson Lecture Theatre
10:00 — 10:30 COFFEE & REGISTRATION

4 West Atrium
10:30 — 11:45 Welcome

Plenary Talk - Nicole Spillane
Domain Decomposition Methods with Adaptive Multipreconditioning

University Hall
10:15 — 10:45 COFFEE
4 West Atrium
10:45 — 11:45 Plenary Talk - Ian Griffiths
iPhones and Dysons: using fluid dynamics to tailor technology

University Hall
11:45 — 13:00 SESSION 1A
Sean Hon
Hassan Izanloo
Nikoleta Glynatsi

4 West 1.2
SESSION 1B
Eoghan Staunton
Tsz Yan Leung
Wakil Sarfaraz

Wolfson Lecture Theatre
11:45 — 13:00 SESSION 4A
Róisín Hill
Bartosz Jaroszkowski
Leonardo Rocchi

4 West 1.2
SESSION 4B
Enrico Gavagnin
Lisa Maria Kreusser
Jehan Alswaihli

Wolfson Lecture Theatre
13:00 — 14:00 LUNCH
4 West Atrium
13:00 — 14:00 LUNCH
4 West Atrium
14:00 — 15:15 SESSION 2A
Hang Liu
Luke Smallman

4 West 1.2
SESSION 2B
Danny Groves
Martina Cracco
Dane Grundy

Wolfson Lecture Theatre
14:00 — 15:15 SESSION 5A
Yiannis Simillides
Sarah Roggendorf
Anitgoni Kleanthous

4 West 1.2
SESSION 5B
Qays Shakir
Helena Stage
Roberto Galizia

Wolfson Lecture Theatre
15:15 — 15:45 COFFEE
4 West Atrium
15:15 — 16:30 Plenary Talk - Simon Chandler-Wilde
Coercivity of second kind boundary integral equations on Lipschitz domains

University Hall

Close
15:45 — 16:45 Plenary Talk - Marta Blangiardo
Modelling spatio-temporal data: methods, examples and challenges

University Hall
16:45 — 18:30 Poster Session
&
Wine Reception

4 West Atrium
19:30 DINNER - Location TBC

In addition to the conference dinner on the Monday evening, we will organise social events on both the Sunday and Tuesday, for any participants who wish to stay in Bath for an extra evening:

• Sunday evening: Drinks and games in a pub in the city centre (location TBC) to welcome participants arriving on Sunday.
• Tuesday afternoon: Walking tour of the city of Bath, setting off from the university campus at approximately 17:00.

Plenary Talks

Marta Blangiardo (Imperial College London)

Modelling spatio-temporal data: methods, examples and challenges

Monday 18th June, 15:45 – University Hall

In this talk I will present how the Bayesian hierarchical framework is commonly used to model spatial and spatio-temporal data. I will first consider the space as discrete (small area framework) and introduce autoregressive structures, which can be used to account for spatial and temporal dependency. I will focus on different examples drawn from the epidemiological field.

Then I will move to the case when space is continuous and introduce the geostatistics framework. Here I will present two examples drawn from epidemiology and environmental science.

I will finish the talk presenting some of the (methodological and non) challenges which researchers face in this context.

Coercivity of second kind boundary integral equations on Lipschitz domains

Tuesday 19th June, 15:15 – University Hall

Boundary integral equation methods are a well-established technique for solving linear elliptic partial differential equations. Second kind integral equation formulations, taking the form $$\phi + K\phi = g$$, where $$K$$ is a boundary integral operator, are attractive because they are well-conditioned. However, it is not known whether standard Galerkin numerical methods are stable and convergent for these formulations for Laplace's equation with Dirichlet boundary conditions on general Lipschitz domains. When the domain $$D$$ is bounded, smooth, and convex the standard second kind integral equation formulation for this simplest case can be written in this form where $$K$$ is a contraction, i.e. $$\|K\|<1$$. Under certain other conditions on $$D$$ it is known that $$K=L+C$$, with $$\|L\|<1$$ and $$C$$ compact, but it is a long-standing conjecture that this holds for all Lipschitz $$D$$. Both these conditions guarantee convergence of Galerkin approximation methods.

But in this talk we exhibit examples of Lipschitz domains in 2D for which it does not hold that $$K$$ is a compact perturbation of a contraction; in fact the so-called essential norm may be arbitrarily large. On the other hand, in a positive direction, we also exhibit new, modified versions of the standard second kind integral equation formulation which have the attractive property that the associated operators are coercive for all Lipschitz $$D$$, so that every Galerkin method is convergent.

Ian M Griffiths (Mathematical Institute, University of Oxford)

iPhones and Dysons: using fluid dynamics to tailor technology

Tuesday 19th June, 10:45 – University Hall

As technology continues to advance, new strategies involving a range of scientific disciplines are required. Mathematicians can provide frameworks to predict operating regimes and manufacture techniques. In this talk we present two case studies: the fabrication of precision glass, for smartphones and new flexible devices; and the development of superior filters for vacuum cleaners. In each case we use asymptotic analysis to derive a model that determines the fabrication protocol required to produce a desired final product.

Nicole Spillane (CNRS, CMAP, École Polytechnique)

Domain Decomposition Methods with Adaptive Multipreconditioning

Monday 18th June, 10:30 – University Hall

Domain decomposition methods are a family of parallel solvers for large linear systems. They all share the idea of approximating the inverse of some matrix by a sum of local inverses (in the so-called subdomains). I will present some classical domain decomposition methods, their limitations and some recent efforts to improve their robustness and scalability so that they can be applied to problems arising from real life simulations.

More precisely, I will present the method of adaptive multipreconditioning. This is a modification of the iterative solver (the preconditioned conjugate gradient algorithm). Instead of one single preconditioner, a family of preconditioners is applied at each iteration, each corresponding to one of the subdomains. This significantly increases the size of the minimization space and consequently accelerates convergence. I will introduce the method, discuss its analysis and show numerical results obtained in collaboration with C. Bovet, P. Gosselet and A. Parret-Fréaud.

Student Talks

Abstracts are available in the conference programme.

>Session 1A – 4 West 1.2 – 11:45—13:00, Monday 18th June

Sean Hon (University of Oxford)

Circulant preconditioners for functions of Toeplitz matrices

Hassan Izanloo (Cardiff University)

$$(P,w)$$-Partition and alternating sign matrices

Nikoleta E. Glynatsi (Cardiff University)

Training memory one strategies for the Prisoner's Dilemma

>Session 1B – 4 West 1.7 (Wolfson Lecture Theatre) – 11:45—13:00, Monday 18th June

Eoghan Staunton (National University of Ireland, Galway)

Noise and Bistability in the Square Root Map

Tsz Yan Leung (University of Reading)

Finite or infinite predictability horizon?

Wakil Sarfaraz (University of Sussex)

The geometric influence of domain-size on the dynamics of reaction-diffusion systems with applications in pattern formation

>Session 2A – 4 West 1.2 – 14:00—15:15, Monday 18th June

Hang Liu (Lancaster University)

On the computation and application of M-estimators and its bootstrapped version in GARCH models

Luke Smallman (University of Cardiff)

Sparse Principal Component Analysis for Exponential Family Data

Transience and Recurrence of Markov Processes with Constrained Local Time

>Session 2B – 4 West 1.7 (Wolfson Lecture Theatre) – 14:00—15:15, Monday 18th June

Danny Groves (Cardiff University)

Droplet Spreading, Chemically Treated Surfaces and Mathematics

Martina Cracco (Cardiff University)

Linear stability and transient behaviour of viscoelastic fluids in boundary layers

Dane Grundy (University of East Anglia)

The Effect of Surface Stress on Interfacial Solitary Waves

>Session 3A – 4 West 1.2 – 09:00—10:15, Tuesday 19th June

Abdul Jumaat (University of Liverpool)

A Convex Variational Segmentation Model and It's Fast Multilevel Algorithm

Oliver Dunbar (University of Warwick)

What Lies Beneath?

Daoping Zhang (University of Liverpool)

Variational Diffeomorphic Models for Image Registration

>Session 3B – 4 West 1.7 (Wolfson Lecture Theatre) – 09:00—10:15, Tuesday 19th June

Aoife Hill (National University of Ireland, Galway)

Modelling the evolving ductility of biodegradable polymers

Hannah Conroy Broderick (National University of Ireland, Galway)

Wrinkling in soft dielectric plates

Paul Greaney (National University of Ireland, Galway)

Inhomogeneous Thinning and Breakdown of Thin Dielectric Elastomers

>Session 4A – 4 West 1.2 – 11:45—13:00, Tuesday 19th June

Róisín Hill (Naitonal University of Ireland, Galway)

Adaptive a posteriori meshes for differential equations

Bartosz Jaroszkowski (University of Sussex)

Numerical solution of Isaacs equation

Leonardo Rocchi (University of Birmingham)

An efficient adaptive algorithm for elliptic problems with random input data

>Session 4B – 4 West 1.7 (Wolfson Lecture Theatre) – 11:45—13:00, Tuesday 19th June

Enrico Gavagnin (University of Bath)

The invasion speed of cell migration models with a multi-stage cell-cycle representation

Lisa Maria Kreusser (University of Cambridge)

An Anisotropic Interaction Model for Simulating Fingerprints

Kernel Reconstruction for Delayed Neural Field Equations

>Session 5A – 4 West 1.2 – 14:00—15:15, Tuesday 19th June

Yiannis Simillides (University College London)

FEniCS.jl, solving PDE's using Julia

Sarah Roggendorf (University of Nottingham)

Eliminating Gibbs Phenomenon: A non-linear Petrov-Galerkin method for convection-dominated problems

Antigoni Kleanthous (University College London)

Light scattering by complex ice crystals using the Boundary Element Method

>Session 5B – 4 West 1.7 (Wolfson Lecture Theatre) – 14:00—15:15, Tuesday 19th June

Qays Shakir (Naitonal University of Ireland, Galway)

$$(2,2)$$-Tight Surface Graphs

Helena Stage (University of Manchester)

Anomalous metapopulation dynamics on scale-free networks

Roberto Galizia (National University of Ireland, Galway)

Phase transitions of multistable dynamical networks

Posters

Abstracts are available in the conference programme.

Poster Session – 4 West Atrium – 16:45—18:30, Monday 18th June

Kernel Reconstruction for Delayed Neural Field Equations

Marton Benedek (University of Southampton)

Finding and verifying the nucleolus of cooperative games

Hanson Bharth (University of Warwick)

Machine Learning for Image Analysis

Felix Diewald (University of Nottingham)

Navier-Stokes-Korteweg Simulations of Dynamic Wetting using the PeTS Equation of State

Raffaele Grande (Cardiff University)

An Introduction to Horizontal Mean Curvature Flow

Danny Groves (Cardiff University)

Droplet Spreading, Chemically Treated Surfaces and Mathematics

Dane Grundy (University of East Anglia)

Decay of Solitary Waves

Active Subspaces in Networks

David Kohan Marzagão (King's College London)

Biased Consensus Games

Antiopi Koronaki (University of Bath)

Topology optimization of frame structures

Alex Mackay (Cardiff University)

Nonisothermal & Compressible Viscoelastic fluid Modelling

Scott Morgan (Cardiff University)

Stability of Oscillatory Rotating Disk Boundary Layers

Gian Maria Negri Porzio (University of Manchester)

A Contour Integral Eigensolver for Dense Nonlinear Eigenvalue Problems

Lizzi Pitt (University of Bath)

Optimising 'First In Human' trials through dynamic programming

Qays Shakir (National University of Ireland, Galway)

Tightness of Surface Graphs

Cameron Smith (University of Bath)

The auxiliary region method: simulating second-order systems

Annika Stechemesser (University of Warwick)

Cancer Research using Drop-seq data

Kris van der Zee (University of Nottingham)

Solving PDEs using Residual Minimization in Discrete Dual Non-Hilbert Norms

Hayley Wragg (University of Bath)

Mathematically Modelling Indoor WiFi Propagation

Participants

This conference is kindly supported by grants from:

We are also grateful for support from our industrial sponsors:

Venue

The conference will be held in the Department of Mathematical Sciences (marked as 4W on this campus map).

Department of Mathematical Sciences
4 West
University of Bath
Claverton Down
Bath
BA2 7AY

See the university's guide on how to find us.

Arriving by train

If you are arriving by train, you should arrive at Bath Spa train stations. You can then take the U1 bus to the university from Dorchester Street (opposite the station to the left), or walk to the university in 30-40 minutes (up quite a steep hill!).

Arriving into Bristol Airport

Coming from Bristol airport, take the A4 bus to Bath, which brings you to the train station, from where you can walk or take a bus, as described above.

Arriving by car

If you plan to drive to the university, limited visitor parking spaces are available on campus. See the university's guide to parking on campus.