Ondrej Hovorka 5th Feb 2014

OH_fotoOn Wednesday 5th February, Dr Ondrej Hovorka, Computational Modelling Group, University of Southampton, will give the talk “Spin models of critical phenomena in systems with multi-scale dynamics”

Building 53 Room 4025, Highfield Campus, 4pm. All welcome. Refreshments served after the talk.

Abstract:

This talk will give a general summary of computational models for studying the emergent non-equilibrium phenomena in interacting spin systems spanning a broad range of length- and time-scales. This will include the Langevin dynamics of a set of coupled stochastic ODEs to model thermal fluctuations in spin systems, the master-equation formalism of long timescale memory effects and hysteresis, and the cellular automaton approach to describe multiscale dynamics of avalanche systems, such as earthquakes for example. The individual approaches will be demonstrated using applications in biomedicine, optimisation of modern hard disk drive technologies, and to analysing the out-of-equilibrium phase transition behaviour in avalanching systems.

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Mike Harfoot 29th Jan 2014

Mike HarfootOn Wednesday 29th January, Dr Mike Harfoot, United Nations Environment Program and Microsoft Research Cambridge will give the talk “Attempting to model all life on earth –  a proof of concept General Ecosystem Model”

Building 53 Room 4025, Highfield Campus, 4pm. All welcome. Refreshments served after the talk.

Abstract:

Over the past few years, Microsoft Research and the United Nations Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), both in Cambridge, UK, have built a global ecosystem model for terrestrial and marine ecosystems. Called the Madingley model, it captures the broad-scale structure and function of ecosystems around the world by simulating processes — including feeding, reproduction and death — that drive the distribution and abundance of organisms. From the relationship between the mass of individual organisms and how long they live, or the effects of  human perturbations such as hunting, to the distribution of biomass across Earth, the model’s outputs are broadly consistent with current understanding of ecosystems. Global ecosystem models such as the Madingley model could radically improve understanding of the biosphere and help inform policy decisions about biodiversity and conservation.

Martyn Amos 15th Jan 2014

On Wednesday 15th January, Prof Martyn Amos, Manchester Metropolitan University, will give the talk “Population-based microbial computing”

Building 53 Room 4025, Highfield Campus, 3:15-4:15pm (this is an hour earlier than usual). All welcome. Refreshments served after the talk.

Abstract:
Synthetic biology is an emerging research field, in which engineering principles are applied to natural, living systems. A major goal of synthetic biology is to harness the inherent “biological nanotechnology” of living cells for the purposes of computation, production, or diagnosis. As the field evolves, it is gradually moving away from a single-cell approach (akin to using standalone computers) to a distributed, population-based approach (rather like using networks of connected machines). In this talk we present several recent results from our group, describing various aspects of this new form of biological engineering. Specifically, we show, using computational studies aligned with laboratory work, how reconfigurable logic devices may be constructed using bacteria, how these may be used as the basis for a “client-server” model of microbial computing, and how bacterial conjugation may provide a new (and, potentially, very rich) communication scheme.

Helen Czerski 8th Jan 2014

On Wednesday 8th January Dr Helen Czerski, University College London, will give the talk “Bubbles and a planet:  the connection and why it matters”

Building 53 Room 4025, Highfield Campus, 4-5pm. All welcome. Refreshments served after the talk.

Abstract:

Gases and particles are constantly being exchanged between the ocean and the atmosphere, affecting the chemistry of both these huge systems.  The main gas of interest is carbon dioxide, since about a third of the extra CO2 that humans are putting up into the atmosphere is being transferred to the oceans and that process does not happen evenly across the world’s oceans.  This exchange is affected by a range of environmental parameters, including wind speed, temperature and biological conditions in the water.   My main interest is the contribution that the bubbles from breaking waves make.  We have just spent six weeks at sea in the North Atlantic, collecting data on air-sea exchanges in high wind conditions, and we now have a very extensive data set for analysis.  I would love to find new ways of making use of this data set, and I’m interested in any ideas out there for how to do it better.