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Bivariate spatial point patterns in the retina: a reproducible review
(Societe Française de StatistiqueJournal de la Société Française de Statistique, 2016-04-08)
In this article I present a reproducible review of recent research to investigate the spatial positioning of neurons in the nervous system. In particular, I focus on the relative spatial positioning of pairs of cell types ...
Evanescent ergosurfaces and ambipolar hyperkähler metrics
(SpringerJournal of High Energy Physics, 2016-04-20)
A supersymmetric solution of 5d supergravity may admit an ‘evanescent ergosurface’: a timelike hypersurface such that the canonical Killing vector field is timelike everywhere except on this hypersurface. The hyperkähler ...
Entrainment by turbulent fountains
(Cambridge University PressJournal of Fluid Mechanics, 2016-02-04)
Experimental measurements of entrainment by turbulent fountains from circular sources in quiescent uniform environments are presented. Our results span almost four orders of magnitude in the source Froude number (0.004 ≤ ...
A comparison of computational methods for detecting bursts in neuronal spike trains and their application to human stem cell-derived neuronal networks
(American Physiological SocietyJournal of Neurophysiology, 2016-04-20)
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. ...
Squirmers with swirl - a model for Volvox swimming
(Cambridge University PressJournal of Fluid Mechanics, 2016)
Colonies of the green alga Volvox are spheres that swim through the beating of pairs of flagella on their surface somatic cells. The somatic cells themselves are mounted rigidly in a polymeric extracellular matrix, fixing ...
Dimensional reduction in numerical relativity: Modified cartoon formalism and regularization
(World Scientific Publishing CompanyInternational Journal of Modern Physics D, 2016-06-01)
We present in detail the Einstein equations in the Baumgarte–Shapiro–Shibata–Nakamura formulation for the case of D-dimensional spacetimes with SO(D−d)isometry based on a method originally introduced in Ref. 1. Regularized ...
Entropy power inequalities for qudits
(American Institute of Physics PublishingJournal of Mathematical Physics, 2016-05-20)
Shannon’s entropy power inequality (EPI) can be viewed as a statement of concavity of an entropic function of a continuous random variable under a scaled addition rule:
f(√a X + √1 − a Y) ≥ a f(X) + (1 − a)f(Y) ∀ a ∈ [0, ...
Lecture notes: Astrophysical fluid dynamics
(Cambridge University PressJournal of Plasma Physics, 2016)
These lecture notes and example problems are based on a course given at the University of Cambridge in Part III of the Mathematical Tripos.
Fluid dynamics is involved in a very wide range of astrophysical phenomena, ...
Secure quantum signatures using insecure quantum channels
(American Physical SocietyPhysical Review A, 2016-03-17)
Digital signatures are widely used in modern communication to guarantee authenticity and transferability of messages. The security of currently used classical schemes relies on computational assumptions. We present a quantum ...
Acoustic boundary conditions at an impedance lining in inviscid shear flow
(Cambridge University PressJournal of Fluid Mechanics, 2016)
The accuracy of existing impedance boundary conditions is investigated, and new impedance boundary conditions are derived, for lined ducts with inviscid shear flow. The accuracy of the Ingard–Myers boundary condition is ...