Research Seminars in the School of Mathematical Sciences

The School of Mathematical Sciences host regular research seminars delivered by internal and external researchers on topics across mathematical sciences.  Seminars take place on the Kevin Street campus and are open to all.

Seminar 23/10/14: Mathematical Modelling of Drip Filter Coffee Brewing

Mathematical Modelling of Drip Filter Coffee Brewing
William Lee
University of Limerick
Thursday 23 October 2014
1pm, Room KA3-011, DIT Kevin Street

Abstract:

Coffee is a key component of many people's day, and yet the recipe for a perfect cup of coffee remains elusive. Part of the reason for this is that although the chemistry of coffee has been thoroughly studied the physics of brewing coffee has received much less attention. I will discuss recent advances in the mathematical modelling of coffee brewing that have resulted from a collaboration between experimentalists at Philips and mathematical modellers based in MACSI. By exploiting an analogy between brewing filter coffee and groundwater chemistry and flow I will show how a set of partial differential equations describing coffee extraction and transport can be derived. I will then discuss strategies for the asymptotic reduction of these equations and compare asymptotic results with simulations based of the full equations and with experiment.

Seminar 03/04/14: The von Neumann Triple Point Paradox

The von Neumann Triple Point Paradox
Ted Cox
UCD
Thursday 3 April 2014
1pm, Room KA3-011, DIT Kevin Street

Seminar 06/03/14: Addressing continuing mathematical deficiencies with advanced mathematical diagnostic testing

Addressing continuing mathematical deficiencies with advanced mathematical diagnostic testing
Michael Carr
Dublin Institute of Technology
Thursday 6 March 2014
1pm, Room KA3-011, DIT Kevin Street

Seminar 13/03/14: Are the days of the maths lecture numbered?

Are the days of the maths lecture numbered? – Using online videos as a teaching and learning resource in a large first year module
Maria Meehan
UCD
Thursday 13 March 2014
1pm, Room KA3-011, DIT Kevin Street

Seminar 05/12/13: Social contact network models for combatting airborne infectious diseases

Social contact network models for combatting airborne infectious diseases
Sean McGarraghy
Quinn & Smurfit Schools of Business, UCD
Thursday 5 December 2013
1pm, Room KA3-011, DIT Kevin Street

Abstract:

Standard "compartment" models of infectious disease transmission divide the population into compartments such as Susceptible, Exposed, Infected and Recovered (in the SEIR model) and model the dynamics of movement among the compartments by differential equations. However, they do not take into account the way disease actually spreads, through contacts between Exposed/Infected people and others. More recent approaches, e.g., (Moore & Newman, 2000; Meyers et al, 2005) have looked at social contact networks to model disease transmission and epidemics, with infection spreading along edges (physical contacts) in the social network. Once the network parameters have been chosen, simulations can be run to study the progress of the disease in the network and the efficacy of control or prevention approaches such as targeted vaccinations, and so make recommendations to decision makers on the best use of resources. In this talk we describe the use of social contact networks to study the airborne infectious disease measles in Tanzania, where it is still a major problem. Census and other data are used to better initialise the network with realistic contact information and network structure, and simulations are run both with and without interventions. This leads to recommendations for targeted interventions. This is joint work with Herieth Rwezaura.