• 18:00 - 19:00
• Bristol-Myers Squibb Lecture Theatre

The fundamental laws of physics look different when reflected in a mirror. This is the statement that the laws of physics have a handedness, what physicists call chirality. This is one of the most important facts that we know about the universe, a fact that, remarkably, goes a long way to fixing the mathematical structure of the laws of nature. I will explain how we know about this handedness, why it’s so important, and why there are still several chiral mysteries that remain unsolved.

• 18:00 - 19:00
• Bristol-Myers Squibb Lecture Theatre

Dementia is a topic of considerable public interest. How empirical evidence has contributed to this societal awareness and indeed fear will be covered in this talk. It will span research from the 1980s when not much was understood about dementia up to contemporary perspectives. The focus will be on the epidemiological and public health evidence base, and how this relates to the results published from clinical and lab based research. The findings from UK and other high income countries of reduced age specific prevalence (%) will be explored, and the implications of results from brain based studies that dementia is not inevitable in the presence of ‘alzheimer’ type changes. The role of inequalities, risk varying across countries and time and our knowledge about protective factors have strengthened during recent years, and the balance of high risk with whole population approaches to reducing risk for society will be considered.

• 18:00 - 19:00
• Bristol-Myers Squibb Lecture Theatre

One of the many outstanding achievements of G I Taylor was the discovery of relatively simple statistical laws that apply to highly complex turbulent flows.  The emergence of simple laws from complexity is well known in other branches of physics, for example the emergence of the laws of heat conduction from molecular dynamics.  Complexity can also arise at large scales, and the structural vibration of an aircraft or a car can be a surprisingly difficult phenomenon to analyse, partly because millions of degrees of freedom may be involved, and partly because the vibration can be extremely sensitive to small changes or imperfections in the system. In this talk it is shown that the prediction of vibration levels can be much simplified by the derivation and exploitation of emergent laws, analogous to some extent to the heat conduction equations, but with an added statistical aspect, as in turbulent flow. The emergent laws are discussed and their application to the design of aerospace, marine, and automotive structures is described.  As an aside it will be shown that the same emergent theory can be applied to a range of problems involving electromagnetic fields. 

• 18:00 - 19:00
• Bristol-Myers Squibb Lecture Theatre

We have many forms of identity, whether socially constructed (kinship, personas, relationships), or issued via organisations (employers, banks, clubs, government). These identities can be partly stored as a digital twin (e.g. by recording biometric information plus some identifier/number, and then possibly linked to other information credentials or entitlements - e.g. citizenship, age, health, finance, educational records and so on).

These digital ecosystems can be designed to allow us to control (access to) such data, or they can be part of state and commercial surveillance. The trustworthiness of such ecosystems is highly questionable. I'll walk through alternative designs and give examples of benefits and disadvantages, including threats (fake id, denial of service etc).

In this talk, I'll also outline challenges, including future problems like the mutability of allegedly unique and persistent biometrics like iris or even DNA, and speculate about the possibility of reflecting social structures properly in designs to create more fair and resilient systems that might be more acceptable than many deployed or proposed today.