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Early-time free-surface flow driven by a deforming boundary
(Cambridge University PressJournal of Fluid Mechanics, 2015-02-24)
When a solid boundary deforms rapidly into a quiescent liquid layer, a flow is in-
duced that can lead to jet formation. An asymptotic analytical solution is presented
for this flow, driven by a solid boundary deforming ...
Constrained dynamics and higher derivative systems in modified gravity
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2015-06-09)
In this thesis, higher derivative theories and constrained dynamics are investigated in detail. In the first part of the thesis, we discuss how the Ostrogradski instability emerges in non-degenerate higher derivative ...
Accelerated Gravitational Wave Parameter Estimation with Reduced Order Modeling
(APSPhysical Review Letters, 2015-02-20)
Inferring the astrophysical parameters of coalescing compact binaries is a key science goal of the upcoming advanced LIGO-Virgo gravitational-wave detector network and, more generally, gravitational-wave astronomy. However, ...
On High-Frequency Sound Generated by Gust-Aerofoil Interaction in Shear Flow
(CUPJournal of Fluid Mechanics, 2015-02-04)
A theoretical model is constructed to predict the far-field sound generated by
high-frequency gust–aerofoil interaction in steady parallel shear flow, including the
effects of aerofoil thickness. Our approach is to use ...
Detecting pairwise correlations in spike trains: an objective comparison of methods and application to the study of retinal waves
(Society for NeuroscienceJournal of Neuroscience, 2014-10-22)
Correlations in neuronal spike times are thought to be key to processing in many neural systems. Many measures have been proposed to summarize these correlations and of these the correlation index is widely used and is the ...
Freeze fracturing of elastic porous media: a mathematical model
(Royal Society, 2015-02-11)
We present a mathematical model of the fracturing of water-saturated rocks and other porous materials in cold climates. Ice growing inside porous rocks causes large pressures to develop that can significantly damage the ...
Stability analysis of matrix Wiener–Hopf factorization of Daniele–Khrapkov class and reliable approximate factorization
(Royal Society PublishingProceedings of the Royal Society of London A, 2015-05-06)
This paper presents new stability results for matrix Wiener–Hopf factorization. The first part of the paper examines conditions for stability of Wiener–Hopf factorization in the Daniele–Khrapkov class. The second part of ...
On the generation of waves during frontogenesis
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2015-06-30)
Density fronts are ubiquitous features of the ocean and atmosphere boundary layers. Boundary layers are characterised by strong surface fluxes of heat, water and momentum, and exhibit intense eddy fields that are associated ...
Non-parametric Image Registration of Airborne LiDAR, Hyperspectral and Photographic Imagery of Wooded Landscapes
(IEEEIEEE Transactions on Geoscience and Remote Sensing, 2015-06-02)
There is much current interest in using multisensor airborne remote sensing to monitor the structure and biodiversity of woodlands. This paper addresses the application of nonparametric (NP) image-registration techniques ...
Metachronal waves in the flagellar beating of Volvox and their hydrodynamic origin
(Royal Society PublishingJournal of the Royal Society Interface, 2015-06-03)
Groups of eukaryotic cilia and flagella are capable of coordinating their beating
over large scales, routinely exhibiting collective dynamics in the form of
metachronal waves. The origin of this behaviour—possibly influenced ...