Parent-child interaction therapy:An evidence-based treatment for child maltreatment

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Mapping from aerial photographs and its relation to mining enterprises

It is not my purpose to discuss aerial cameras or the theory of aerial photographs in this thesis but to confine my efforts to the very practical business of making maps from aerial photographs and to point out where this system of mapping can be used to advantage in the mining industry --Introduction, page 3

Moments of parton distribution amplitudes and structure functions for the light mesons from lattice QCD

This thesis presents the lattice calculation and the required renormalisation for the determination of two hadronic structure quantities. These are the parton distribution amplitudes (PDAs) which enter in the form-factor for exclusive scattering processes and the parton distribution functions (pdfs) that appear in inclusive processes. The PDA’s provide process independent partonic information about hadrons and are important quantities required for the calculation of weak physics parameters, such as CKM matrix elements and CP violating phases. We are able to calculate moments of the PDAs on the lattice using two point correlation functions of local operators. This calculation extracts the first two moments for the light mesons and is performed on three ensembles, with parameters, that enable a study of finite volume and discretisation effects. We use the Iwasaki gauge action and 2 + 1 flavours of domain wall fermions for all simulations. The calculation of the pdfs through the structure function moments uses three-point correlation functions of local operators. We extract the first odd moment for the pion on our finest lattice, using partially twisted boundary conditions. An important feature of both calculations is non-perturbative renormalisation, using the Rome-Southampton method. The effect of the projections used to isolate the desired renormalisation factors and the momentum choice, that sets the renormalisation scale, on the discretisation errors is detailed through the use of twisted boundary conditions. The results for all quantities are obtained to good precision

Factors that influence the sustainability of structured allied health journal clubs: a qualitative study

Background: Structured journal clubs are a widely used tool to promote evidence-based practice in health professionals, however some journal clubs (JC) are more effectively sustained than others. To date, little research has provided insights into factors which may influence sustainability of JCs within health care settings. As part of a larger randomised controlled study, this research aimed to gain understanding of clinicians' experiences of sustaining a structured JC format (TREAT- Tailoring Research Evidence and Theory) within their clinical context. The study also aimed to identify which strategies may assist longer term sustainability and future implementation of the TREAT format. Methods: We employed a qualitative methodology, informed by behaviour change theory. Clinicians (n=19) from five different JCs participated in focus groups to explore their experience in sustaining the JC format six months after the formal trial period had completed. Clinicians were asked to describe factors which they perceived helped or hindered sustaining components of the JC format within their local context. Following a descriptive summary of the data, barriers and enablers were thematically analysed according to behaviour change theory domains: capability, motivation and opportunity and further mapped to targeted implementation strategies. Results: Participants reported perceived benefits of maintaining the TREAT format and described several components that promoted its sustainability. Sustaining factors linked to individuals' capability included building research knowledge and skills and having access to research experts. Sustaining factors that enhanced opportunities for behaviour change included management expectation to attend and a team culture which values evidence based practice, while factors found to enhance individuals' motivation included the JC having close application to practice and clinicians sensing ownership of the JC. Several implementation strategies to enhance these factors are described including graduated support to clinicians in facilitation of JCs and greater engagement with managers. Conclusions: Long-term sustainability of a structured JC is dependent on both individual and service level factors and a balance of implementation strategies that enhance capability, opportunity and motivation. Consideration of how clinicians can be engaged to take ownership and build their own capability from the commencement of the JC is important. Trial registration: ACTRN12616000811404

Improved interpolating fields for hadrons at non-vanishing momentum

We demonstrate that a reduction in the noise-to-signal ratio may be obtained for hadrons at non-zero momenta whilst maintaining a good overlap with the ground state through a generalisation of Gaussian/Wuppertal smearing. The use of an anisotropic smearing wavefunction is motivated by the physical picture of a boosted hadron.Comment: 7 pages, 6 figures, poster presented at the 30th International Symposium on Lattice Field Theory (Lattice 2012), Cairns, Australia, June 24-29, 201

The Shape of Covariantly Smeared Sources in Lattice QCD

Covariantly smeared sources are commonly used in lattice QCD to enhance the projection onto the ground state. Here we investigate the dependence of their shape on the gauge field background and find that the presence of localized concentrations of magnetic field can lead to strong distortions which reduce the smearing radii achievable by iterative smearing prescriptions. In particular, as $a\to 0$, iterative procedures like Jacobi smearing require increasingly large iteration counts in order to reach physically-sized smearing radii $r_{sm}\sim$ 0.5 fm, and the resulting sources are strongly distorted. To bypass this issue, we propose a covariant smearing procedure (``free-form smearing'') that allows us to create arbitrarily shaped sources, including in particular Gaussians of arbitrary radius.Comment: 1+15 pages, 7 figures (24 pdf images