42 Works

Comparison of Jc in GdBCO tape using Dc magnetisation and harmonic Ac susceptibility measurements [dataset]

Elizabeth Surrey, Seung Hyun Moon & Damian Hampshire
We have measured the critical current density (Jc) of a sample of SuNAM HTS tape using Ac Susceptibility (ACS) and Dc Magnetisation (DCM) techniques. In DCM measurements, inhomogeneity in the applied Dc field causes a systematic underestimate of Jc. The error in DCM measurements is characterized by the penetration parameter, gamma, and grows as Jc decreases. Using a harmonic ACS analysis, we have obtained more accurate measurements of Jc as a function of applied Dc...

Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt [dataset]

A.T. Hindmarch
Current-induced magnetization reversal due to spin-orbit torque is demonstrated in an anisotropy controlled Pt/Co/Pt trilayer. The samples were designed to have weak perpendicular magnetic anisotropy, with a measured anisotropy field of (1340±20) Oe. Reversal is shown to be dominated by a damping-like torque associated with the spin-Hall effect. A small in-plane magnetic field was required to break the symmetry and enable reversal. With a 273 Oe field, magnetization reversal occurred with a current density amplitude of...

Segments of straws [dataset]

Zhenning Liu
Each row of the file represents one segment. The first two columns are x-coordinates and y-coordinates of beginning points of each segment and the third, fourth columns are coordinates of endpoints. The fifth and sixth columns are m and b values of the straight line function y=mx+b of segments.

Automated translating beam profiler for in-situ laser beam spot-size and focal position measurements. [dataset]

James Keaveney
Data files supporting the paper "Automated translating beam profiler for in-situ laser beam spot-size and focal position measurements", arXiv.org/abs/1801.06508. Data used in the figures of the paper. Separate sub-folders for each figure. See the information.txt file for information specific to each figure

Overcoming volumetric locking in material point methods (figure data)

William Coombs, Tim Charlton, Michael Cortis & Charles Augarde
Material point methods suffer from volumetric locking when modelling near incompressible materials due to the combination of a low-order computational mesh and large numbers of material points per element. Large numbers of material points per element are required to reduce integration errors due to non-optimum placement of integration points. This restricts the ability of current material point methods in modelling realistic material behaviour. This paper presents for the first time a method to overcome finite...

Electrical and mechanical diagnostic indicators of wind turbine induction generator rotor faults [dataset]

Donatella Zappalá
In MW-sized wind turbines, the most widely-used generator is the wound rotor induction machine, with a partially-rated voltage source converter connected to the rotor. This generator is a significant cause of wind turbine fault modes. In this paper, a harmonic time-stepped generator model is applied to derive wound rotor induction generator electrical & mechanical signals for fault measurement, and propose simple closed-form analytical expressions to describe them. Predictions are then validated with tests on a...

Rain Drop Image Data Set for Guo 2018 study - still image set

Tiancheng Guo
The presence of raindrop induced image distortion has a significant negative impact on the performance of a wide range of all-weather visual sensing applications including within the increasingly important contexts of visual surveillance and vehicle autonomy. A key part of this problem is robust raindrop detection such that the potential for performance degradation in effected image regions can be identified. Here we address the problem of raindrop detection in colour video imagery by considering three...

B-spline based boundary conditions in the material point method [figure data]

Yun Bing
The material point method is an increasingly popular method for tackling solid mechanics problems involving large deformations. However, there are issues associated with applying boundary conditions in the method and, to date, no general approach for imposing both Neumann and Dirichlet boundary conditions has been proposed. In this paper, a new B-spline based boundary method is developed as a complete methodology for boundary representation, boundary tracking and boundary condition imposition in the standard material point...

Torso rotation and hand position modulation functional MRI [dataset]

Jason Connolly
The following three .zip files contain: 1. RawSaccadotopy data: Eyetracking data for an experiment in which an EyeLink 2 was used to record monocular eye position under one of three torso orientations (torso under head). The head position was always facing the screen. There were 5 runs per torso orientation (or 15 runs across the 3 experimental torso rotation conditions). R = Right; L = left and C = Center 2. HandCentredStudyRaw data: functional MRI...

Photoassociation of ultracold CsYb molecules and determination of interspecies scattering lengths [dataset]

Alex Guttridge
This thesis reports the first measurements of the ground state binding energies of CsYb molecules and the scattering lengths of the Cs+Yb system. The knowledge gained from these measurements will be essential for devising the most efficient route for the creation of rovibrational ground state CsYb molecules. CsYb molecules in the rovibrational ground state possess both electric and magnetic dipole moments which opens up a wealth of applications in many areas of physics and chemistry....

Non-intrusive torque measurement for rotating shafts using optical sensing of zebra-tapes [dataset]

Donatella Zappalá, Matteo Bezziccheri, Christopher James Crabtree & Nicola Paone
Non-intrusive, reliable and precise torque measurement is critical to dynamic performance monitoring, control and condition monitoring of rotating mechanical systems. This paper presents a novel, contactless torque measurement system consisting of two shaft-mounted zebra tapes and two optical sensors mounted on stationary rigid supports. Unlike conventional torque measurement methods, the proposed system does not require costly embedded sensors or shaft-mounted electronics. Moreover, its non-intrusive nature, adaptable design, simple installation and low cost make it suitable...

Dynamic Morphologies and Stability of Droplet Interface Bilayers [dataset and software]

Benjamin Guiselin, Jack O Law, Buddhapriya Chakrabarti & Halim Kusumaatmaja
We develop a theoretical framework for understanding dynamic morphologies and stability of droplet interface bilayers (DIBs), accounting for lipid kinetics in the monolayers and bilayer, and droplet evaporation due to imbalance between osmotic and Laplace pressures. Our theory quantitatively describes distinct pathways observed in experiments when DIBs become unstable. We find that when the timescale for lipid desorption is slow compared to droplet evaporation, the lipid bilayer will grow and the droplets approach a hemispherical...

Absolute fluorescence and absorption measurements over a dynamic range of 1E6 with cavity-enhanced laser-induced fluorescence [dataset]

Scott E. Sanders, Oliver R. Willis, N. Hendrik Nahler & Eckart Wrede
The meta data is listed in the file Metadata.pdf included in the ZIP file.

Ultracold Molecules for Quantum Simulation: Rotational Coherences in CaF and RbCs [dataset and software]

Jacob Blackmore & Luke Caldwell
Polar molecules offer a new platform for quantum simulation of systems with long-range interactions, based on the electrostatic interaction between their electric dipole moments. Here, we report the development of coherent quantum state control using microwave fields in 40Ca19F and 87Rb133Cs molecules, a crucial ingredient for many quantum simulation applications. We perform Ramsey interferometry measurements with fringe spacings of ~ 1 kHz and investigate the dephasing time of a superposition of N = 0 and...

Mechanical properties of biopolymer-stabilised soil-based construction materials [dataset]

Sravan Muguda Viswanath, Samuel Booth, Paul Hughes, Charles Augarde, Celine Perlot, Agostino Walter Bruno & Domenico Gallipoli

Durham RCUK Open Access Data Year 5 (Apr2017-Mar2018)

James Bisset & Sarah Hyland
Data on compliance of Durham publications with RCUK Open Access policy, including APC spend from the RCUK block grant. Year 5: April 1st 2017 to March 31st 2018

Topological properties of a dense atomic lattice gas [dataset]

Robert J. Bettles, Jiri Minar, Charles S. Adams, Igor Lesanovsky & Beatriz Olmos
We investigate the existence of topological phases in a dense two-dimensional atomic lattice gas. The coupling of the atoms to the radiation field gives rise to dissipation and a nontrivial coherent long-range exchange interaction whose form goes beyond a simple power law. The far-field terms of the potential—which are particularly relevant for atomic separations comparable to the atomic transition wavelength—can give rise to energy spectra with one-sided divergences in the Brillouin zone. The long-ranged character...

ElecSus: extension to arbitrary geometry magneto-optics [dataset and software]

James Keaveney, Charles Adams & Ifan Hughes
An alternative to the GitHub repositories for the ElecSus codes and test data, also available at https://github.com/jameskeaveney/ElecSus and https://github.com/jameskeaveney/ElecSusTestData

Pretrained Neural Network Models for Guo 2018 study - TensorFlow format

Tiancheng Guo
The presence of raindrop induced image distortion has a significant negative impact on the performance of a wide range of all-weather visual sensing applications including within the increasingly important contexts of visual surveillance and vehicle autonomy. A key part of this problem is robust raindrop detection such that the potential for performance degradation in effected image regions can be identified. Here we address the problem of raindrop detection in colour video imagery by considering three...

Computing small pivot-minors [software]

Konrad K. Dabrowski
A graph G contains a graph H as a pivot-minor if H can be obtained from G by applying a sequence of vertex deletions and edge pivots. Pivot-minors play an important role in the study of rank-width. However, so far, pivot-minors have only been studied from a structural perspective. In the associated paper, we initiate a systematic study into their complexity aspects. We first prove that the Pivot-Minor problem, which asks if a given graph...

Extending Deep Neural Network Trail Navigation for Unmanned Aerial Vehicle Operation within the Forest Canopy - Evaluation [dataset]

Bruna G. Maciel-Pearson & Toby P. Breckon
Autonomous flight within a forest canopy represents a key challenge for generalised scene understanding on-board a future Unmanned Aerial Vehicle (UAV) platforms. Here we present an approach for automatic trail navigation within such an unstructured environment that successfully generalises across differing image resolutions - allowing UAV with a varying sensor payload capabilities to operate equally in such challenging environmental conditions. Specifically, this work presents an optimised deep neural network architecture, capable of state-of-the-art performance across...

Registration Year

  • 2018
    42

Resource Types

  • Dataset
    35
  • Other
    4
  • Software
    2
  • Text
    1