Fri, 16 Oct 2015

14:00 - 15:00
L3

What’s lumen got to do with it? Mechanics and transport in lung morphogenesis

Dr Sharon Lubkin
(Dept of Maths UCSU)
Abstract

Mammalian lung morphology is well optimized for efficient bulk transport of gases, yet most lung morphogenesis occurs prenatally, when the lung is filled with liquid - and at birth it is immediately ready to function when filled with gas. Lung morphogenesis is regulated by numerous mechanical inputs including fluid secretion, fetal breathing movements, and peristalsis. We generally understand which of these broad mechanisms apply, and whether they increase or decrease overall size and/or branching. However, we do not generally have a clear understanding of the intermediate mechanisms actuating the morphogenetic control. We have studied this aspect of lung morphogenesis from several angles using mathematical/mechanical/transport models tailored to specific questions. How does lumen pressure interact with different locations and tissues in the lung? Is static pressure equivalent to dynamic pressure? Of the many plausible cellular mechanisms of mechanosensing in the prenatal lung, which are compatible with the actual mechanical situation? We will present our models and results which suggest that some hypothesized intermediate mechanisms are not as plausible as they at first seem.

 

Wed, 14 Oct 2015

17:00 - 18:30
L1

M C Escher - Artist, Mathematician, Man

Roger Penrose and Jon Chapman
(Oxford)
Abstract

Oxford Mathematics Public Lectures

MC Escher - Artist, Mathematician, Man 

Roger Penrose and Jon Chapman

This lecture has now sold out

The symbiosis between mathematics and art is personified by the relationship between Roger Penrose and the great Dutch graphic artist MC Escher. In this lecture Roger will give a personal perspective on Escher's work and his own relationship with the artist while Jon Chapman will demonstrate the mathematical imagination inherent in the work. 

The lecture will be preceded by a showing of the BBC 4 documentary on Escher presented by Sir Roger Penrose. Private Escher prints and artefacts will be on display outside the lecture theatre.

5pm

Lecture Theatre 1

Mathematical Institute

Andrew Wiles Building

Radcliffe Observatory Quarter

Woodstock Road

OX2 6GG

 

Roger Penrose is Emeritus Rouse Ball Professor at the Mathematical Institute in Oxford

 

Jon Chapman is Statutory Professor of Mathematics and Its Applications at the Mathematical Institute in Oxford

Tue, 13 Oct 2015

14:15 - 15:15
L4

CANCELLED!

Stefan Witzel
(Bielefeld)
Abstract

 If $R = F_q[t]$ is the polynomial ring over a finite field
then the group $SL_2(R)$ is not finitely generated. The group $SL_3(R)$ is
finitely generated but not finitely presented, while $SL_4(R)$ is
finitely presented. These examples are facets of a larger picture that
I will talk about.

Take a look if you're considering studying in the UK and want to find out more about the support Oxford offers international students.
Find out what Oxford has to offer besides world class research in beautiful surroundings.
Fri, 20 Nov 2015

10:00 - 11:00
L4

More accurate optical measurements

Graeme Clark
(Lein)
Abstract

Lein’s confocal systems make accurate and precise measurements in many different applications. In applications where the object under test introduces variability and/or optical aberrations to the optical signal, the accuracy and precision may deteriorate. This technical challenge looks for mathematical solutions to improve the accuracy and precision of measurements made in such circumstances.

The presentation will outline the confocal principle, show “perfect” signals, give details of how we analyse such signals, then move on to less perfect signals and the effects on measurement accuracy and precision.

Subscribe to