112 research outputs found
We need better evidence for social prescribing: Call for Action for better systems for collaboration and building evidence
No full textFirst paragraph: Husk et al., stated ‘social prescribing is the topic of the moment’ (p. 6 [1]) in 2019, and this remains the case. Globally, societies are struggling to find solutions to growing health inequalities and the impact of social determinants on creating (ill) health are increasingly recognised. Social prescribing is regarded as a way of mitigating health inequalities through better support of people in deprived areas [2] and has become more important post-COVID19 [3]
Experimental investigations of turbulent temperature fluctuations and phase angles in ASDEX Upgrade
No full textOn the selection rules for three-wave interactions along ray trajectories
No full textThree-wave interactions may occur in media with quadratic nonlinearities, which allow for a flow of power between linear waves. The interactions require selection rules similar to conservation of energy and momentum to be satisfied. Equations are presented to solve these selection rules efficiently along the ray trajectory of a pump wave via integration similar to how ray trajectories are determined numerically. This is convenient when dealing with large amplitude beams which may interact with waves along its trajectory. Reformulating the selection rules as a system of ODEs means that the selection rules may be solved using dispersion relations for the three waves, even if the dispersion relations cannot be solved for frequency or wavevector, which would otherwise be needed. In numerical implementations, root-finding algorithms, which may be unstable for complicated dispersion relations, can be avoided. A simple set of equations valid in one-dimensional are presented first. The corresponding equations in arbitrary dimension, including 2D and 3D, are then derived. A set of equations are also derived to find different solutions to the selection rules at a fixed point. Examples with the derived equations applied to plasma physics are presented.</p
Recent progress with the MAST synthetic aperture imaging radiometer
No full textThe MAST Synthetic Aperture Microwave Imaging (SAMI) radiometer is an antenna array designed to image thermal microwave emission from MAST fusion plasmaaSAMl is now installed on MAST and preliminary data has been taken. This data clearly show the presence of electrostatic to electromagnetic mode conversion and the circumstances under which this mode conversion take place are strongly related to the pedestal density gradient and magnetic field. These quantities are valuable in understanding tokamak pedestal behaviour and are especially important to models of the Edge Localised Mode (ELM). This paper describes SAMIs design and construction, as well as fist signals showing the presence of mode conversion
Cross-phase measurements of turbulent density and electron temperature fluctuations for transport model validation in fusion plasmas
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Workplace Health and Wellbeing in Small and Medium Sized Enterprises (SMEs): A Mixed Methods Evaluation of Provision and Support Uptake
No full textToday’s challenging times highlight the need for workplaces to support employee wellbeing. Workplaces can offer a means to improve employee wellbeing and promote health initiatives. However, small and medium-sized enterprises (SMEs) are less likely than larger organizations to engage with workplace wellbeing initiatives or offer wellbeing provision. This study, conducted in an urban area in central England, explores SME engagement with local government workplace wellbeing provision, and barriers and facilitators to SME engagement, SME implementation of wellbeing provision, and employee uptake. A mixed-methods design was used. Quantitative data were collected via a survey of 103 SMEs and qualitative data from three focus groups with stakeholders involved in promoting SME engagement with wellbeing support (n = 9) and 16 in-depth interviews with SME representatives (n = 8) and employees (n = 8). Quantitative data were analyzed using the chi-squared, Fisher’s exact and Mann-Whitney U tests, and multivariable logistic regression. Qualitative data were analyzed using framework analysis. Findings highlighted several interrelated factors acting as barriers and facilitators to SME engagement with wellbeing initiatives, SME-provided wellbeing provision, and employee uptake. The study provides valuable insights for policymakers, public health teams, and SME leaders on improving provision of and engagement with wellbeing programs. Trust, awareness, knowledge, and communication are highlighted as important prerequisites of optimal provision and engagement
Validation of gyrokinetic simulations with measurements of electron temperature fluctuations and density-temperature phase angles on ASDEX Upgrade
No full textInternational audienceMeasurements of turbulent electron temperature fluctuation amplitudes, dTe?=T e, frequencyspectra, and radial correlation lengths, LrðT e? Þ, have been performed at ASDEX Upgrade usinga newly upgraded Correlation ECE diagnostic in the range of scales k? 50% for all simulations within the sensitivity scans performed,good quantitative agreement is found for L rðT e? Þ and anT. A validation metric is used to quantifythe level of agreement of individual simulations with experimental measurements, and the bestagreement is found close to the experimental gradient values. Published by AIP Publishing
Validation study of GENE on ASDEX Upgrade using perturbative thermal diffusivity measured with partial sawtooth heat pulses
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