Participation in learning and depressive Symptoms

This paper reports the findings of research on relationships between depression and participation in learning using data from a large sample of older adults. The objective was to establish whether learning can reduce the risk of depression. Data were obtained from the English Longitudinal Study of Ageing, a nationally-representative sample of adults aged 50 and above. The eight-item Center for Epidemiologic Studies Depression Scale (CES-D) was used to measure depressive symptoms. Participation in learning covered the acquisition of qualifications; taking formal training courses, learning at arts, music or evening classes; and participation in gym=exercise classes. Multiple regression analyses were conducted with the change in the measure of depressive symptoms between two waves of the longitudinal survey as the response variable. There was limited evidence that participation in learning reduced the risk of depression in later life. Only learning leading to qualifications was significantly associated with the outcome after controlling other factors. But learning leading to qualifications was undertaken only by a small minority of the sample, mainly the youngest and most highly educated. Other types of learning were not significantly associated with depression. It appears that learning has, at best, a small role to play in addressing the risk of depression in later life

Adaptive Optics Simulations for Siding Spring

Using an observational derived model optical turbulence profile (model-OTP) we have investigated the performance of Adaptive Optics (AO) at Siding Spring Observatory (SSO), Australia. The simulations cover the performance for AO techniques of single conjugate adaptive optics (SCAO), multi-conjugate adaptive optics (MCAO) and ground-layer adaptive optics (GLAO). The simulation results presented in this paper predict the performance of these AO techniques as applied to the Australian National University (ANU) 2.3 m and Anglo-Australian Telescope (AAT) 3.9 m telescopes for astronomical wavelength bands J, H and K. The results indicate that AO performance is best for the longer wavelengths (K-band) and in the best seeing conditions (sub 1-arcsecond). The most promising results are found for GLAO simulations (field of view of 180 arcsecs), with the field RMS for encircled energy 50% diameter (EE50d) being uniform and minimally affected by the free-atmosphere turbulence. The GLAO performance is reasonably good over the wavelength bands of J, H and K. The GLAO field mean of EE50d is between 200 mas to 800 mas, which is a noticeable improvement compared to the nominal astronomical seeing (870 to 1700 mas).Comment: 15 pages; accepted for publication in PAS

The effect of school resources on pupil attainment: a multilevel simultaneous equation modelling approach

Improving educational achievement in UK schools is a priority, and of particular concern is the low achievement of specific groups, such as those from lower socio-economic backgrounds. An obvious question is whether we should be improving the outcomes of these students by spending more on their education. The literature on the effect of educational spending on pupil achievement has a number of methodological difficulties, in particular the endogeneity of school resource levels, and the intra-school correlations in student responses. In this paper, we adopt a multilevel simultaneous equation modelling approach to assess the impact of school resources on student attainment at age 14. This paper is the first to apply a simultaneous equation model to estimate the impact of school resources on pupil achievement, using the newly available National Pupil Database (NPDB)