Signatures of Chiral Dynamics in Low Energy Compton Scattering off the Nucleon

We present a projector formalism which allows to define dynamical polarizabilities of the nucleon from a multipole expansion of the nucleon Compton amplitudes. We give predictions for the energy dependence of these dynamical polarizabilities both from dispersion theory and from leading-one-loop chiral effective field theory. Based on the good agreement between the two theoretical frameworks, we conclude that the energy dependence of the dynamical polarizabilities is dominated by chiral dynamics, except in those multipole channels where the first nucleon resonance Delta(1232) can be excited. Both the dispersion theory framework and a chiral effective field theory with explicit Delta(1232) degrees of freedom lead to a very good description of the available low energy proton Compton data. We discuss the sensitivity of the proton Compton cross section to dynamical polarizabilities of different multipole content and present a fit of the static electric and magnetic dipole polarizabilities from low-energy Compton data up to omega=170 MeV, finding alpha_E=(11.04+-1.36)*10^(-4) fm^3, beta_M =(2.76-+1.36)*10^(-4) fm^3.Comment: 43 pages, 13 figure

Aspects of Nucleon Compton Scattering

We consider the spin-averaged nucleon forward Compton scattering amplitude in heavy baryon chiral perturbation theory including all terms to order ${\cal O} (q^4)$. The chiral prediction for the spin-averaged forward Compton scattering amplitude is in good agreement with the data for photon energies $\omega \le 110$ MeV. We also evaluate the nucleon electric and magnetic Compton polarizabilities to this order and discuss the uncertainties of the various counter terms entering the chiral expansion of these quantities.Comment: 17 pp, TeX, 7 figures available from the authors, preprint CRN-93/5

Improving Referrals for HIV Care Through Organizational Network Analysis

Context: The link between testing for HIV and obtaining antiretroviral therapy (ART) is central to the HIV/AIDS control strategies of UNAIDS (the “90-90-90” goals) and the International Association of Providers of AIDS Care (“Test and Start”). To ensure that 90% of those diagnosed with HIV/AIDS begin ART and 90% of those on ART achieve viral suppression, service providers not providing all services need to refer patients to other organizations. Setting: Homa Bay, Kenya. Objective: Homa Bay county’s HIV/AIDS prevalence is one of the country’s highest.We identified the organizations providing some aspect of HIV/AIDS care and investigatedways in which theywork together, or do not, to cover the comprehensive needs of those they serve. Design and Participants: We identified 56 organizations and interviewed a representative from each about his or her organization’s services and its connections with the other 55, with particular interest in referrals from sites that test for HIV but do not treat infections to sites that do treat infections. Main Outcome Measure: Referral connections. Results: Referral connections among the 56 in the past 30 dayswere relatively rare, averaging fewer than 2; 13 organizations made no referrals at all. Notably, 5 facilities that test for HIV did not refer their clients to an ART provider. We found 2 distinct clusters of connected organizations: one in Homa Bay Township and the other in Rangwe subcounty. When we convened the organizations and presented our results to them, they expressed interest in establishing better connections and referrals. Conclusions: Homa Bay has an opportunity to improve care for people with HIV/AIDS, in particular ensuring that those testing positive receive treatment, simply by making better use of the services already available. This can be achieved by informing each organization of the services provided by each of the others and by bringing the organizations together to plan and monitor the services’ coordination. These steps could be implemented separately in each of the 2 organizational clusters

Health and wellbeing of rotation workers in the mining, offshore oil and gas, and construction industry : a systematic review

The study was funded by Aberdeen-Curtin Alliance Curtin International Postgraduate Research Scholarship (CIPRS). BY-AA is a recipient of Aberdeen- Curtin Alliance PhD CIPRS and Research Stipend Scholarship. Acknowledgements The authors extend their sincere gratitude to Ms Diana Blackwood and Ms Vanessa Varis, Librarian for Faculty of Health Sciences, at Curtin University for their professional assistance in developing the review search strategy.Peer reviewedPublisher PD

Rotation work in the resources sector : a systematic review of the impact on workers’ families

Open Access through the T&F Agreement Acknowledgements We express our sincere gratitude to Ms Diana Blackwood and Ms Vanessa Varis, Librarians for the Faculty of Health Sciences at Curtin University for their professional assistance in developing the review search strategy. Funding: The study was supported by the Aberdeen-Curtin Alliance International Postgraduate Research Scholarship and Research Stipend Scholarship awarded to Bernard Yeboah Asiamah Asare (Curtin ID: 17619778; Aberdeen ID: 51987326)Peer reviewe

Health and Related Behaviours of Partners of Fly-in Fly-out Workers in Australia : A Cross-sectional Study

OA via the T&F Agreement Research Funder Aberdeen-Curtin Alliance Curtin International Postgraduate Research Scholarship (CIPRS) and Research Stipend Scholarship scheme of the University of Aberdeen, Scotland and Curtin University, AustraliaPeer reviewedPublisher PD

Health and Related Behaviours of Partners of Fly-in Fly-out Workers in Australia : A Cross-sectional Study

OA via the T&F Agreement Research Funder Aberdeen-Curtin Alliance Curtin International Postgraduate Research Scholarship (CIPRS) and Research Stipend Scholarship scheme of the University of Aberdeen, Scotland and Curtin University, AustraliaPeer reviewedPublisher PD

Application of Ecological Momentary Assessment in Studies with Rotation Workers in the Resources and Related Construction Sectors : A Systematic Review

Funding Information: This study was supported by the Aberdeen-Curtin Alliance Curtin International Postgraduate Research Scholarship and Research Stipend Scholarship awarded to Bernard Yeboah-Asiamah Asare (Curtin ID: 17619778; Aberdeen ID: 51987326). Acknowledgments The authors would like to express their appreciation to Ms Diana Blackwood and Ms Vanessa Varis, Librarians for the Faculty of Health Sciences at Curtin University for their professional assistance in developing the review search strategy.Peer reviewedPublisher PD

Impact of fly-in fly-out work on health behaviours and affective states : A daily diary study

Funding Information: We thank Mineral Resource Limited, Australia for supporting the study and advertising the study to their employees. We also extend our sincere thanks to all FIFO workers for taking part and contributing to this study. The study was funded by the Aberdeen‐Curtin Alliance International Postgraduate Research Scholarship and Research Stipend Scholarship of the University of Aberdeen, Scotland and Curtin University, Australia, awarded to Bernard Kwadwo Yeboah Asiamah‐Asare (Curtin ID: 17619778; Aberdeen ID: 51987326). Mineral Resources Limited, Australia also supported the study by providing AUD 200 shopping voucher to the winner of a raffle draw as reimbursement for study participation. The Mineral Resources Limited played no role in the design of the study, data collection and analysis, interpretation of study findings, preparation or decision to submit this manuscript for publication.Peer reviewe