D. Downes
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View article: A Framework for Assessing and Improving Decision-Making in the Translation of Research and Innovation for Impact
A Framework for Assessing and Improving Decision-Making in the Translation of Research and Innovation for Impact Open
The successful translation of research and innovation into impact has never been more important to solve the complex problems facing societies and existential threats to our planet. University research and innovation holds a key to unlock …
View article: Enhancing biofeedback-driven self-guided virtual reality exposure therapy through arousal detection from multimodal data using machine learning
Enhancing biofeedback-driven self-guided virtual reality exposure therapy through arousal detection from multimodal data using machine learning Open
Virtual reality exposure therapy (VRET) is a novel intervention technique that allows individuals to experience anxiety-evoking stimuli in a safe environment, recognise specific triggers and gradually increase their exposure to perceived t…
View article: Sparse interleaved sampling for high resolution focal construct geometry X-ray tomography
Sparse interleaved sampling for high resolution focal construct geometry X-ray tomography Open
We demonstrate interleaved sampling by multiplexing conical subshells within the tomosynthesis and raster scanning a phantom through a 150 kV shell X-ray beam. Each view comprises pixels sampled on a regular 1 mm grid, which is then upscal…
View article: Conical shell illumination incorporating a moving aperture for depth-resolved high-energy X-ray diffraction
Conical shell illumination incorporating a moving aperture for depth-resolved high-energy X-ray diffraction Open
To retrieve crystallographic information from overlapping sample volumes requires a high-energy probe using a point detector.
View article: Biofeedback Towards Machine Learning Driven Self-guided Virtual Reality Exposure Therapy Based on Arousal State Detection from Multimodal Data
Biofeedback Towards Machine Learning Driven Self-guided Virtual Reality Exposure Therapy Based on Arousal State Detection from Multimodal Data Open
Virtual-reality exposure therapy (VRET) is a novel intervention technique that allows individuals to experience anxiety-evoking stimuli in a safe environment, recognise specific triggers and gradually increase their exposure to perceived t…
View article: Combined X-ray diffraction and absorption tomography using a conical shell beam
Combined X-ray diffraction and absorption tomography using a conical shell beam Open
We combine diffraction and absorption tomography by raster scanning samples through a hollow cone of pseudo monochromatic X-rays with a mean energy of 58.4 keV. A single image intensifier takes 90x90 (x,y) snapshots during the scan. We dem…
View article: Confocal energy-dispersive X-ray diffraction tomography employing a conical shell beam
Confocal energy-dispersive X-ray diffraction tomography employing a conical shell beam Open
We introduce a new high-energy X-ray diffraction tomography technique for volumetric materials characterization. In this method, a conical shell beam is raster scanned through the samples. A central aperture optically couples the diffracte…
View article: Sporadic absorption tomography using a conical shell X-ray beam
Sporadic absorption tomography using a conical shell X-ray beam Open
We demonstrate tomography by measuring a sporadic sequence of ring shaped projections collected during a translational scan. We show that projections using 10% sampling may be used to construct optical sections with peak signal-to-noise ra…
View article: In The Quest For Stokes V - Science Cases And Technical Challenges
In The Quest For Stokes V - Science Cases And Technical Challenges Open
Circular polarization is produced either in the emission process through the Zeeman effect, or through the transfer of polarized radiation in a magneto-active medium. While the former mechanism provides a direct access to the strength of t…
View article: X-ray absorption tomography employing a conical shell beam
X-ray absorption tomography employing a conical shell beam Open
We demonstrate depth-resolved absorption imaging by scanning an object through a conical shell of X-rays. We measure ring shaped projections and apply tomosynthesis to extract optical sections at different axial focal plane positions. Thre…
View article: ACA [CI] observations of the starburst galaxy NGC 253
ACA [CI] observations of the starburst galaxy NGC 253 Open
\n Context. Carbon monoxide (CO) is widely used as a tracer of the molecular gas in almost all types of environments. However, several shortcomings of CO complicate usaging it as H2 tracer, such as its optical depth effects, the dependence…