Research Talks
All members of Darwin are encouraged to present their research at informal seminars held on Tuesdays and Thursdays during term. Everyone is welcome, whatever your degree or discipline.
Darwin members pick up lunch from 12:00, taking it into the Richard King Room (on the left at the top of the stairs leading to the dining hall) or 1 Newnham Terrace (straight through at the far end of the dining hall). Wine is served. Non-Darwin members are welcome to attend, although lunch is only available to guests of members. The talk begins at about 1:15 and lasts for about 20 minutes and is followed by questions over coffee. We adjourn at 2:00pm at the latest.
Upcoming Talks
Darwin Lunchtime Talks will recommence next term and the schedule posted here.
Past Research Talks
Every action we make relies on us appropriately assigning value to different options. Such value signals have been found in the brain and are the key drivers of every single decision, from staying at DarBar for one last drink, to pursuing a PhD. However, neurons encode values subjectively, often in a manner that is not obviously related to the objective qualities of those rewards; a small, simple diamond may be worth as much as a house.
In this talk, I will explain how this has hindered our ability to decode these fundamental neuronal signals and present an auction task for the measurement of a monkey’s subjective values for rewards within individual decisions. By allowing for the association of behaviour and neuronal signals with unprecedented temporal precision, we may gain greater insight into the neuronal ‘black box’ which underlies the choices we make in everyday life.
"The ravages of two world wars and advantages attainable from a united Europe resulted in a continuous process of economic and political union in the half century following the Second World War. By the end of the 20th Century, this culminated in the establishment of the European Central Bank and Euro currency. Despite the enormous benefits associated with the formation of the European Monetary Union (EMU), critics of the EMU outlined numerous deficiencies which were rapidly brought to light during the 2010 European debt crisis. Furthermore, European cohesion policies seeking to balance economic growth, development and competitiveness across the European Union remain largely ineffectual given the fundamental structural inadequacies of the EMU which lacks fiscal federalism in the absence of a floating exchange rate mechanism. This dissertation seeks to identify the degree to which the EMU distorted currency values and determine whether these distortions are contributing to the spatial disparities in economic growth and development found across Europe with particular attention being paid to the North-South divide. It is argued that cohesion policy will continue to be undermined until the distortions in national competitiveness are fully addressed.
Black holes are the most extreme objects found in the universe. They provide a one-way passage to the unknown, places where our understanding of physics breaks down. Pioneering work over the last century has transformed black holes from theoretical curiosities, into the domain of the observational astronomer. These gravitational monsters reside in the centre of all galaxies in the universe, and are intimately linked to the formation and evolution of stars and galaxies we observe today. Despite their enormous size, our current telescopes are unable to spatially resolve them on the sky. We therefore resort to indirect methods to zoom in on the region directly around the black hole. In this talk, I will describe current efforts to spatially map the gas in the immediate vicinity of a black hole as it spirals down the deep gravitational potential well. These observations provide us with information about the two fundamental properties of black holes: their mass and spin.
In 1831, at the age of 22, Charles Darwin set off on a voyage around the world that lasted almost 5 years. What Darwin discovered foremost was the vastness of time and its dramatic cumulative effects in geology. After he returned, his theory of biological evolution arose with a parallel reliance on deep time. More recently, the specific biological and cultural worlds that Darwin visited have often vanished or changed dramatically since his voyage in ways that have remained poorly documented as a whole. On the other hand, some places – typically now in reserves or parks – contain landscapes exactly as Darwin described them, albeit with different scientific interpretations. For over 15 years, I have retraced Darwin's inland journeys in S. American countries, New Zealand, Australia, Mauritius, S. Africa, and numerous small islands (such as Cocos-Keeling, St. Helena, Ascension, Terceira, the Falklands, and the Galapagos) to write a book with the theme of time, including the “then and now” of Darwin’s voyage, some aspects of which I will share.
Hybrid materials typically comprise two or more materials and span from foams and lattices, to fibre reinforced composites. From the naturally occurring bone, wood or bird’s wings, to man-made aerogel and metal or polymer foams, hybrid material are ubiquitous in nature. Design of hybrid materials involves careful selection of material and topology to generate a structurally efficient, low-density material enabling gaps to be filled in material space. The primary goal of this research is the design of such a material and in particular, a hybrid material containing polymer foam. The specific desired properties of such a material should include superior energy absorption capabilities giving improvement of the indentation and impact resistance of the foam. These new materials will find applications in a myriad of industries; automotive, aerospace, and marine as well as sporting and military applications. Specific applications may include helmets, and panels in cars, boats and aircraft which are susceptible to impact.