Browsing Department of Materials Science and Metallurgy by Title
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A comparative perspective on the evolution of Romance clausal structure
(John Benjamins PublishingDiachronica, 20161219)This article presents a comparative analysis of the diachronic evolution of Romance clausal structure from Classical Latin through to the late medieval period, with particular reference to the Verb Second (V2) property. ...

A comparison of computational methods for detecting bursts in neuronal spike trains and their application to human stem cellderived neuronal networks
(American Physiological SocietyJournal of Neurophysiology, 20160420)Accurate identification of bursting activity is an essential element in the characterization of neuronal network activity. Despite this, no one technique for identifying bursts in spike trains has been widely adopted. ...

A DataDriven Feature Extraction Method for Enhanced Phonocardiogram Segmentation
In this work, we present a method to extract features from heart sound signals in order to enhance segmentation performance. The approach is datadriven, since the way features are extracted from the recorded signals is ...

A generalisation of the MalgrangeEhrenpreis theorem to find fundamental solutions to fractional PDEs
(ELECTRONIC JOURNAL OF QUALITATIVE THEORY OF DIFFERENTIAL EQUATIONS, 2017)

A gluing operator for the ambitwistor string
We present a new operator in the ambitwistor string which glues together correlators with fewer points or of lower genus. It underpins the recursive construction of treelevel CHY scattering amplitudes by Dolan & Goddard, ...

A lower bound on the positive semidefinite rank of convex bodies
The positive semidefinite rank of a convex body $C$ is the size of its smallest positive semidefinite formulation. We show that the positive semidefinite rank of any convex body $C$ is at least $\sqrt{\log d}$ where $d$ is ...

A matrix model for WZW
(SpringerJournal of High Energy Physics, 20160801)We study a U($\small N$) gauged matrix quantum mechanics which, in the large $\small N$ limit, is closely related to the chiral WZW conformal field theory. This manifests itself in two ways. First, we construct the leftmoving ...

A model for the effects of germanium on silica biomineralization in choanoflagellates
(Royal Society PublishingJournal of the Royal Society Interface, 20160921)Silica biomineralization is a widespread phenomenon of major biotechnological interest. Modifying biosilica with substances like germanium (Ge) can confer useful new properties, although exposure to high levels of Ge ...

A molecular mechanism for the topographic alignment of convergent neural maps
(eLife Sciences Publications LtdeLife, 20170314)Sensory processing requires proper alignment of neural maps throughout the brain. In the superficial layers of the superior colliculus of the midbrain, converging projections from retinal ganglion cells and neurons in ...

A multitimescale analysis of phase transitions in precessing blackhole binaries
(APSPhysical Review D, 20150914)The dynamics of precessing binary black holes (BBHs) in the postNewtonian regime has a strong timescale hierarchy: the orbital timescale is very short compared to the spinprecession timescale which, in turn, is much ...

A new class of de Sitter vacua in type IIB large volume compactifications
(JOURNAL OF HIGH ENERGY PHYSICS, 20171026)

A new method for isolating turbulent states in transitional stratified plane Couette flow
(Cambridge University PressJournal of Fluid Mechanics, 20161026)We present a new adaptive control strategy to isolate and stabilize turbulent states in transitional, stably stratified plane Couette flow in which the gravitational acceleration (nondimensionalized as the bulk Richardson ...

A Numerical Technique for Linear Elliptic PDEs in Polygonal Domains
(Royal Society PublishingProceedings of the Royal Society A, 20150211)Integral representations for the solution of linear elliptic partial differential equations (PDEs) can be obtained using Green's theorem. However, these representations involve both the Dirichlet and the Neumann values on ...

A physically based parameterization of gravity drainage for seaice modelling
(Wiley on behalf of the American Geophysical UnionJournal of Geophysical Research: Oceans, 20140902)We incorporate a physically derived parameterization of gravity drainage, in terms of a convective upwelling velocity, into a onedimensional, thermodynamic sea ice model of the kind currently used in coupled climate ...

A possible failure of determinism in general relativity
(American Physical SocietyPhysics, 20180117)Is the future predictable? If we know the initial state of a system exactly, then do the laws of physics determine its state arbitrarily far into the future? In Newtonian mechanics, the answer is yes. Similarly in ...

A Quantum Paradox of Choice: More Freedom Makes Summoning a Quantum State Harder
(American Physical SocietyPhysical Review A, 2016)The properties of quantum information in spacetime can be investigated by studying operational tasks, such as ‘summoning’, in which an unknown quantum state is supplied at one point, and a call is made at another for it ...

A regularised singularity approach to phoretic problems
(SpringerThe European Physical Journal E, 20151228)An efficient, accurate, and flexible numerical method is proposed for the solution of the swimming problem of one or more autophoretic particles in the purely diffusive limit. The method relies on successive boundary element ...

A simple Bayesian estimate of direct RNAi gene regulation events from differential gene expression profiles
(20110520)Abstract Background Microarrays are commonly used to investigate both the therapeutic potential and functional effects of RNA interfering (RNAi) oligonucleotides such as microRNA (miRNA) and small interfering RNA (siRNA). ...

A squirmer across Reynolds numbers
(Cambridge University PressJournal of Fluid Mechanics, 2016)The selfpropulsion of a spherical squirmer  a model swimming organism that achieves locomotion via steady tangential movement of its surface  is quantified across the transition from viscously to inertially dominated ...

A twofluid model for locomotion under selfconfinement
(American Physical SocietyPhysical Review Fluids, 20170901)The bacterium Helicobacter pylori causes ulcers in the stomach of humans by invading mucus layers protecting epithelial cells. It does so by chemically changing the rheological properties of the mucus from a highviscosity ...