Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room.

Mitigation measures against infectious aerosols are desperately needed. We aimed to: 1) compare germicidal ultraviolet radiation (GUV) at 254 nm (254-GUV) and 222 nm (222-GUV) with portable high efficiency particulate air (HEPA) filters to inactivate/remove airborne bacteriophage ϕX174, 2) measure the effect of air mixing on the effectiveness of 254-GUV, and 3) determine the relative susceptibility of ϕX174, SARS-CoV-2, and Influenza A(H3N2) to GUV (254 nm, 222 nm). A nebulizer generated ϕX174 laden aerosols in an occupied clinical room (sealed-low flow).

Reinventing the evaluation wheel: COGwheel's co-designed digital innovation using the Qualtrics heat map.

The involvement of service-users, clinicians, and other health service end-users is recognised as an essential part of health and medical research. This collaborative approach can significantly contribute to methodological advancements including the development of research instruments and measures that ensure their suitability for research participants. The current paper details the co-design, development and implementation of the novel, digitised COGwheel (Co-designed Outcomes for Guests Evaluation Wheel).

Programmable wave-based analog computing machine: a metastructure that designs metastructures.

The ability to perform mathematical computations using metastructures is an emergent paradigm that carries the potential of wave-based analog computing to the realm of near-speed-of-light, low-loss, compact devices. We theoretically introduce and experimentally verify the concept of a reconfigurable metastructure that performs analog complex mathematical computations using electromagnetic waves. Reconfigurable, RF-based components endow our device with the ability to perform stationary and non-stationary iterative algorithms.

Does the School Environment and School Engagement in Early High School Predict Trajectories of Anti-Social Behaviour? A National Longitudinal Study of Australian Youth From 12 to 19 years.

Background: Schools are widely considered important agents of social control for young people. Consequently, school engagement, disengagement and the school environment are key to understanding behavioural outcomes during adolescence. This study addresses an empirical gap in longitudinal research by examining new types of school engagement, as well as school-level environmental factors.