Browsing College of Engineering, Mathematics and Physical Sciences by Title
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Exciton storage in a nanoscale AharonovBohm ring with electric field tuning
(American Physical Society, 2009)We study analytically the optical properties of a simple model for an electronhole pair on a ring subjected to perpendicular magnetic flux and inplane electric field. We show how to tune this excitonic system from optically ... 
Excitons and interband terahertz transitions in narrowgap carbon nanotubes
(Institute of Electrical and Electronics Engineers (IEEE), 2013)We show, via a solution of the quasionedimensional twobody problem applied to a Dirac system, that excitonic effects suppress the onedimensional Van Hove singularity in singlewalled carbon nanotubes with narrow band gaps. 
Excitons in narrowgap carbon nanotubes
(American Physical Society, 2011)We calculate the exciton binding energy in singlewalled carbon nanotubes with narrow band gaps, accounting for the quasirelativistic dispersion of electrons and holes. Exact analytical solutions of the quantum relativistic ... 
Exospheric models for the Xray emission from single WolfRayet stars
(Oxford University Press / Royal Astronomical Society, 2000)We review existing ROSAT detections of single Galactic WolfRayet (WR) stars and develop wind models to interpret the Xray emission. The ROSAT data, consisting of bandpass detections from the ROSAT AllSky Survey (RASS) ... 
Experimental Comparison of Classification Uncertainty for Randomised and Bayesian Decision Tree Ensembles
(Springer Berlin Heidelberg, 2004)In this paper we experimentally compare the classification uncertainty of the randomised Decision Tree (DT) ensemble technique and the Bayesian DT technique with a restarting strategy on a synthetic dataset as well as on ... 
Experimental method for reliably establishing the refractive index of buprestid beetle exocuticle
(Optical Society of America, 2007)In this study we apply an existing optical characterisation technique to establish reliably the complex refractive indices of layers comprising a natural multilayer reflector in the beetle Chrysochroa raja. Its reflector ... 
Explicit integral Galois module structure of weakly ramified extensions of local fields
(American Mathematical Society, 2015)Let L/K be a finite Galois extension of complete local fields with finite residue fields and let G=Gal(L/K). Let G_1 and G_2 be the first and second ramification groups. Thus L/K is tamely ramified when G_1 is trivial and ... 
Explicit representation of subgrid heterogeneity in a GCM land surface scheme
(American Meteorological Society, 2003)A land surface scheme that may be run with or without a tiled representation of subgrid heterogeneity and includes an implicit atmospheric coupling scheme is described. Simulated average surface air temperatures and diurnal ... 
Exploration of the surface director profile in a liquid crystal cell using coupling between the surface plasmon and halfleaky optical guided modes
(American Institute of Physics, 2008)The halfleaky guided mode geometry with a thin metal tunnel barrier as one cladding layer is used to explore the distribution of the director very near to the surface in a hybrid aligning nematic liquid crystal cell. From ... 
Exploratory ensemble designs for environmental models using kextended Latin Hypercubes
(Wiley, 2015)In this paper we present a novel, flexible, and multipurpose class of designs for initial exploration of the parameter spaces of computer models, such as those used to study many features of the environment. The idea ... 
Exploring links between Arctic amplification and midlatitude weather
(American Geophysical Union, 2013)This study examines observed changes (1979–2011) in atmospheric planetarywave amplitude over northern midlatitudes, which have been proposed as a possible mechanism linking Arctic amplification and midlatitude weather ... 
Exponential integrators for a Markov chain model of the fast sodium channel of cardiomyocytes.
(Institute of Electrical and Electronics Engineers (IEEE), 2015)The modern Markov chain models of ionic channels in excitable membranes are numerically stiff. The popular numerical methods for these models require very small time steps to ensure stability. Our objective is to formulate ... 
Extremal Dependence Indices: improved verification measures for deterministic forecasts of rare binary events
(American Meteorological Society, 2011)Verifying forecasts of rare events is challenging, in part because traditional performance measures degenerate to trivial values as events become rarer. The extreme dependency score was proposed recently as a nondegenerating ... 
Extreme Sensitivity to Detuning for Globally Coupled Phase Oscillators
(American Physical Society, 2006)We discuss the sensitivity of a population of coupled oscillators to differences in their natural frequencies, i.e., to detuning. We argue that for three or more oscillators, one can get great sensitivity even if the ... 
Fast magnetoacoustic waves in curved coronal loops I. Trapped and leaky modes
(EDP Sciences, 2006)A study of vertically polarised fast magnetoacoustic waves in a curved coronal loop is presented. The loop is modeled as a semicircular magnetic slab in the zero plasmaβ limit. The governing equations for linear waves ... 
Fast magnetoacoustic waves in curved coronal loops: II. Tunneling modes
(EDP Sciences, 2006)Aims. Fast magnetoacoustic waves in curved coronal loops are investigated and the role of lateral leakage in wave damping, which includes the mechanism of wave tunneling, is explored. Methods. A coronal loop is modeled ... 
Fast simulation of phasechange processes in chalcogenide alloys using a Gillespietype cellular automata approach
(American Institute of Physics, 2008)A stochastic cellular automata simulator capable of spatiotemporal modeling of the crystallization and amorphization behavior of phasechange materials during the complex annealing cycles used in optical and electrical ... 
A fault tolerant control allocation scheme with output integral sliding modes
(Elsevier, 2013)In this paper a new fault tolerant control scheme is proposed, where only measured system outputs are assumed to be available. The scheme ensures closedloop stability throughout the entire closedloop response of the ... 
Fault tolerant longitudinal aircraft control using nonlinear integral sliding mode
(Institution of Engineering and Technology (IET), 2014)This study proposes a novel nonlinear fault tolerant scheme for longitudinal control of an aircraft system, comprising an integral sliding mode control allocation scheme and a backstepping structure. In fault free conditions, ... 
Ferritefilled cavities for compact planar resonators
(American Institute of Physics (AIP) , 2014)Subwavelength metallic planar cavities, closed at one end, have been constructed by wrapping aluminium foil around teflon or ferrite slabs. Finite cavity width perturbs the fundamental cavity mode frequency of ferritefilled ...