34 research outputs found

    DENIS-P J1228.2-1547 -- A New Benchmark Brown Dwarf

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    We present optical spectroscopy of three brown dwarf candidates identified in the first 1% of the DENIS sky survey. Low resolution spectra from 6430 - 9150A show these objects to have similar spectra to the brown dwarf candidate GD 165B. High resolution spectroscopy shows that one of the objects -- DENIS-P J1228.2-1547 -- has a strong 2.3+-0.05A equivalent width absorption line of Li I 6708A, and is therefore a brown dwarf with mass below 0.065Msol, and age < 1.5 Gyr. DENIS-P J1228.2-1547 can now be considered a proto-type for brown dwarfs closer to the hydrogen burning limit than Gl 229B.Comment: 6 pages, 2 figures in Postscript uses AASTeX and epsf.sty. Revised version as accepted by ApJ (in press) Full postscript available at http://www.aao.gov.au/local/www/cgt/aaoarea/preprints.htm

    Monitoring the coastal zone using earth observation::application of linear spectral unmixing to coastal dune systems in Wales

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    Coastal sand dune systems across temperate Europe are presently characterized by a high level of ecological stabilization and a subsequent loss of biological diversity. The use of continuous monitoring within these systems is vital to the preservation of species richness, particularly with regard to the persistence of early stage pioneer species dependent on a strong sediment supply. Linear spectral unmixing was applied to archived Landsat data (1975?2014) and historical aerial photography (1941?1962) for monitoring bare sand (BS) cover dynamics as a proxy for ecological dune stabilization. Using this approach, a time series of change was calculated for Kenfig Burrows, a 6-km2 stabilized dune system in South Wales, during 1941?2014. The time series indicated that a rapid level of stabilization had occurred within the study area over a period of 75 years. Accuracy assessment of the data indicated the suitability of medium-resolution imagery with an RMSE of <10% across all images and a difference of <3% between observed and predicted BS area. Temporal resolution was found to be a significant factor in the representation of BS cover with fluctuations occurring on a sub-decadal scale, outside of the margin of error introduced through the use of medium-resolution Landsat imagery. This study demonstrates a tractable approach for mapping and monitoring ecologically sensitive regions at a subLandsat pixel levelpublishersversionPeer reviewe

    Exploring undergraduate midwifery students' readiness to deliver culturally secure care for pregnant and birthing Aboriginal women

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    Background: Culturally secure health care settings enhance accessibility by Aboriginal Australians and improve their satisfaction with service delivery. A culturally secure health service recognises and responds to the legitimate cultural rights of the recipients of care. Focus is upon the health care system as well as the practice and behaviours of the individuals within it. In an attempt to produce culturally secure practitioners, the inclusion of Aboriginal content in health professional programs at Australian universities is now widespread. Studies of medical students have identified the positive impact of this content on knowledge and attitudes towards Aboriginal people but relatively little is known about the responses of students in other health professional education programs. This study explored undergraduate midwifery students' knowledge and attitudes towards Aboriginal people, and the impact of Aboriginal content in their program. Methods: The study surveyed 44 students who were in their first, second and third years of a direct entry, undergraduate midwifery program at a Western Australian (WA) university. The first year students were surveyed before and after completion of a compulsory Aboriginal health unit. Second and third year students who had already completed the unit were surveyed at the end of their academic year. Results: Pre- and post-unit responses revealed a positive shift in first year students' knowledge and attitudes towards Aboriginal people and evidence that teaching in the unit was largely responsible for this shift. A comparison of post-unit responses with those from students in subsequent years of their program revealed a significant decline in knowledge about Aboriginal issues, attitudes towards Aboriginal people and the influence of the unit on their views. Despite this, all students indicated a strong interest in more clinical exposure to Aboriginal settings. Conclusions: The inclusion of a unit on Aboriginal health in an undergraduate midwifery program has been shown to enhance knowledge and shift attitudes towards Aboriginal people in a positive direction. These gains may not be sustained, however, without vertical integration of content and reinforcement throughout the program. Additional midwifery-specific Aboriginal content related to pregnancy and birthing, and recognition of strong student interest in clinical placements in Aboriginal settings provide opportunities for future curriculum development

    Longitudinal Follow Up of Early Career Midwives: Insights Related to Racism Show the Need for Increased Commitment to Cultural Safety in Aboriginal Maternity Care

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    Racism in health care undermines equitable service delivery, contributes to poorer health outcomes and has a detrimental effect on the Aboriginal workforce. In maternity care settings, Aboriginal women’s perceptions of discrimination are widespread, with the importance of cultural practices surrounding childbirth often not recognised. Efforts to build midwives’ cultural capabilities and address health disparities have seen Aboriginal content included in training programs but little is known about its application to clinical practice. This study reinterviewed midwives who had previously completed university midwifery training that aimed to increase understanding of Aboriginal people and cultural safety in health care. Participants were 14 non-Indigenous midwives and two Aboriginal midwives. Interviews explored the legacy of program initiatives on cultural capabilities and observations and experiences of racism in maternity care settings. Methods followed qualitative approaches for research rigour, with thematic analysis of transcribed interviews. Findings revealed the positive impact of well-designed content and placements, with non-Indigenous participants cognisant and responsive to casual racism but largely not recognising institutional racism. The Aboriginal midwives had experienced and were attuned to racism in all its guises and suggested initiatives to heighten awareness and dispel stereotypes. It is evident that greater attention must be paid to institutional racism in educational programs to increase its recognition and appropriate actions within health care settings

    Up close and real: living and learning in a remote community builds students’ cultural capabilities and understanding of health disparities

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    Abstract Background Rural and remote communities in Australia fare worse than their urban counterparts across major health indicators, with geographic isolation, restricted accessibility to health services, socioeconomic disadvantage, lifestyle and behavioural factors all implicated in poorer health outcomes. Health disparities, which are especially stark in Australian Aboriginal and Torres Strait Islander populations, underscore the urgent need to build a culturally responsive and respectful rural health workforce. Allied health student placements in settings with high Aboriginal populations provide opportunities for the development of cultural capabilities and observation of the causes and impact of health disparities. A service learning pedagogy underpinned by strong campus-community partnerships can contribute to effective situated learning. Positive placement experiences can also encourage future rural practice alleviating workforce shortages. This article reports on the first stage of a proposed longitudinal investigation into the impact of remote placements on clinical practice and employment choices. Methods In-depth interviews were undertaken with health science students and recent graduates from Australian universities who spent up to 4 weeks at the remote community of Mt. Magnet (Badimaya country) in Western Australia. Interviews, which occurred between two and 12 months following the placement were recorded, transcribed and thematically analysed for patterns of meaning. Results Factors which contributed to positive professional, personal and socially responsive learning experiences were identified. These included pre-placement cultural training to build understanding of the local Aboriginal community, peer support, community engagement, cultural exchanges and interprofessional collaboration. Highlights were associated with relationship-building in the community and opportunities to apply insights into Aboriginal cultural ways to clinical and community practice. The role of the Aboriginal mentor was integral to students’ understanding of the social and cultural dynamics in the practice setting. Challenges related to the logistics of supervision in remote locations and workloads. Conclusions The interprofessional placement offered students a unique opportunity to experience how isolation, socioeconomic disadvantage and cultural factors conspire to produce health inequities in remote Australian settings and to observe how communities respond to their circumstances. Despite difficulties encountered, learnings derived from the application of clinical, social and interprofessional skills, and rural employment opportunities that arose following graduation, were all highly valued

    Respect, Relationships, and &ldquo;Just Spending Time with Them&rdquo;: Critical Elements for Engaging Aboriginal Students in Primary School Education

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    While disparities in educational outcomes for Aboriginal children have narrowed in early childhood education and for Year 12 completions, these positive trends are not replicated in the intervening years where attendance, reading, writing, and numeracy targets have been missed. Erratic attendance in the primary years has the greatest impact on achievement; literacy and numeracy scores decline as absences increase. Family functioning and health, caregiver expectations, past encounters with the education system and socio-economic disadvantage are all implicated in poorer rates of attendance. In response to community concerns, an Aboriginal/mainstream partnership was forged in 2011 and began work in 2016 to address patterns of attendance and achievement among Aboriginal primary students in a regional city in Western Australia. This paper describes the innovative, community-led &ldquo;More Than Talk&rdquo; program and presents findings from teaching and support staff interviews two years after implementation. Qualitative methods were employed to analyse the data, develop themes, and ensure rigour. Findings highlighted the cascading impact of erratic attendance and the role of strong relationships, respect, and investment of time with children as critical elements in student engagement and wellbeing. Community-led, collaborative educational programs have the potential to positively impact Aboriginal students&rsquo; engagement and contribute to culturally responsive environments. If sustained, such efforts can enable learning to flourish

    Perspectives of Aboriginal People Affected by Cancer on the Need for an Aboriginal Navigator in Cancer Treatment and Support: A Qualitative Study

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    Aboriginal and Torres Strait Islander Australians suffer higher rates of cancer and poorer outcomes than the wider population. These disparities are exacerbated by rurality and remoteness due to reduced access and limited engagement with health services. This study explored the cancer journeys of Aboriginal patients and carers, and their views on the establishment of an Aboriginal Patient Navigator role within the Western Australian healthcare system to support cancer patients and their families. Sixteen Aboriginal participants were interviewed either face to face, by telephone, or via video conferencing platforms. The interviews were then recorded, transcribed, and thematically analyzed using standard qualitative techniques. Close consultation within the research team enhanced the rigour and robustness of the study findings. Patients and carers identified many gaps in cancer service delivery that made their experiences stressful and unnecessarily complex. Challenges included a lack of stable accommodation, financial burdens, constant travel, being “off-Country”, and miscommunication with health professionals. Key sources of support and strength were the centrality of family and ongoing cultural connectedness. All participants were supportive of an Aboriginal Patient Navigator role that could address shortfalls in cancer service delivery, especially for patients from rural and remote communities. A culturally safe model of support has the potential to increase access, reduce anxiety and improve health outcomes
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