990 resultados para Powe, Elizabeth


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Background Individual exposure to ultraviolet radiation (UVR) is challenging to measure, particularly for diseases with substantial latency periods between first exposure and diagnosis of outcome, such as cancer. To guide the choice of surrogates for long-term UVR exposure in epidemiologic studies, we assessed how well stable sun-related individual characteristics and environmental/meteorological factors predicted daily personal UVR exposure measurements. Methods We evaluated 123 United States Radiologic Technologists subjects who wore personal UVR dosimeters for 8 hours daily for up to 7 days (N = 837 days). Potential predictors of personal UVR derived from a self-administered questionnaire, and public databases that provided daily estimates of ambient UVR and weather conditions. Factors potentially related to personal UVR exposure were tested individually and in a model including all significant variables. Results The strongest predictors of daily personal UVR exposure in the full model were ambient UVR, latitude, daily rainfall, and skin reaction to prolonged sunlight (R2 = 0.30). In a model containing only environmental and meteorological variables, ambient UVR, latitude, and daily rainfall were the strongest predictors of daily personal UVR exposure (R2 = 0.25). Conclusions In the absence of feasible measures of individual longitudinal sun exposure history, stable personal characteristics, ambient UVR, and weather parameters may help estimate long-term personal UVR exposure.

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Circulating 25-hydroxyvitamin D (25(OH)D), a marker for vitamin D status, is associated with bone health and possibly cancers and other diseases; yet, the determinants of 25(OH)D status, particularly ultraviolet radiation (UVR) exposure, are poorly understood. Determinants of 25(OH)D were analyzed in a subcohort of 1,500 participants of the US Radiologic Technologists (USRT) Study that included whites (n 842), blacks (n 646), and people of other races/ethnicities (n 12). Participants were recruited monthly (20082009) across age, sex, race, and ambient UVR level groups. Questionnaires addressing UVR and other exposures were generally completed within 9 days of blood collection. The relation between potential determinants and 25(OH)D levels was examined through regression analysis in a random two-thirds sample and validated in the remaining one third. In the regression model for the full study population, age, race, body mass index, some seasons, hours outdoors being physically active, and vitamin D supplement use were associated with 25(OH)D levels. In whites, generally, the same factors were explanatory. In blacks, only age and vitamin D supplement use predicted 25(OH)D concentrations. In the full population, determinants accounted for 25 of circulating 25(OH)D variability, with similar correlations for subgroups. Despite detailed data on UVR and other factors near the time of blood collection, the ability to explain 25(OH)D was modest.

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The Flightless Cormorant Phalacrocorax harrisi is restricted to c. 400 km of the western coastline of the Galápagos archipelago coinciding with the local occurrence of seasonal upwelling of oceanic currents. Individuals frequently make more than one breeding attempt per year, usually change mates, and when juveniles are raised, females desert them to the further care of their mates who complete the rearing alone. Here we report data from a ten-year historical study of a colony stretching c.2 km along the coast-line and representing c. 12% of the total population of the species. The number of clutches laid and juveniles fledged were linked to the occurrence of cold water in off-shore foraging grounds. Most Flightless Cormorants have attachments to local stretches of coastline several hundred metres long. However, a few birds travelled many kilometres, including between colonies, sometimes over open sea. We show that males invest more in nest-building and feeding of the offspring than their mates, and we relate this to the (presumed) in-bred nature of the colony and to male and female reproductive strategies. Our data validate a published demographic model of the species (Valle 1995).

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Objective: To determine the impact of a free-choice diet on nutritional intake and body condition of feral horses. Animals: Cadavers of 41 feral horses from 5 Australian locations. Procedures: Body condition score (BCS) was determined (scale of 1 to 9), and the stomach was removed from horses during postmortem examination. Stomach contents were analyzed for nutritional variables and macroelement and microelement concentrations. Data were compared among the locations and also compared with recommended daily intakes for horses. Results: Mean BCS varied by location; all horses were judged to be moderately thin. The BCS for males was 1 to 3 points higher than that of females. Amount of protein in the stomach contents varied from 4.3% to 14.9% and was significantly associated with BCS. Amounts of water-soluble carbohydrate and ethanol-soluble carbohydrate in stomach contents of feral horses from all 5 locations were higher than those expected for horses eating high-quality forage. Some macroelement and microelement concentrations were grossly excessive, whereas others were grossly deficient. There was no evidence of ill health among the horses. Conclusions and Clinical Relevance: Results suggested that the diet for several populations of feral horses in Australia appeared less than optimal. However, neither low BCS nor trace mineral deficiency appeared to affect survival of the horses. Additional studies on food sources in these regions, including analysis of water-soluble carbohydrate, ethanol-soluble carbohydrate, and mineral concentrations, are warranted to determine the provenance of such rich sources of nutrients. Determination of the optimal diet for horses may need revision.

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This practice-led doctorate involved the development of a collection – a bricolage – of interwoven fragments of literary texts and visual imagery explor-ing questions of speculative fiction, urban space and embodiment. As a sup-plement to the creative work, I also developed an exegesis, using a combina-tion of theoretical and contextual analysis combined with critical reflections on my creative process and outputs. An emphasis on issues of creative practice and a sustained investigation into an aesthetics of fragmentation and assem-blage is organised around the concept and methodology of bricolage, the eve-ryday art of ‘making do’. The exegesis also addresses my interest in the city and urban forms of subjectivity and embodiment through the use of a range of theorists, including Michel de Certeau and Elizabeth Grosz.

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Since the identification of the Foetal Alcohol Syndrome in 1973, researchers have been attempting to discover how much alcohol is deleterious to the developing foetus. This article examines the research evidence of more than a decade suggesting that alcohol is teratogenic. The heated debate between experts in the field both in U.K and Australia is discussed. Implications and recommendations are included.

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This paper focuses on very young students' ability to engage in repeating pattern tasks and identifying strategies that assist them to ascertain the structure of the pattern. It describes results of a study which is part of the Early Years Generalising Project (EYGP) and involves Australian students in Years 1 to 4 (ages 5-10). This paper reports on the results from the early years' cohort (Year 1 and 2 students). Clinical interviews were used to collect data concerning students' ability to determine elements in different positions when two units of a repeating pattern were shown. This meant that students were required to identify the multiplicative structure of the pattern. Results indicate there are particular strategies that assist students to predict these elements, and there appears to be a hierarchy of pattern activities that help students to understand the structure of repeating patterns.

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We performed an integrated genomic, transcriptomic and proteomic characterization of 373 endometrial carcinomas using array- and sequencing-based technologies. Uterine serous tumours and ∼25% of high-grade endometrioid tumours had extensive copy number alterations, few DNA methylation changes, low oestrogen receptor/progesterone receptor levels, and frequent TP53 mutations. Most endometrioid tumours had few copy number alterations or TP53 mutations, but frequent mutations in PTEN, CTNNB1, PIK3CA, ARID1A and KRAS and novel mutations in the SWI/SNF chromatin remodelling complex gene ARID5B. A subset of endometrioid tumours that we identified had a markedly increased transversion mutation frequency and newly identified hotspot mutations in POLE. Our results classified endometrial cancers into four categories: POLE ultramutated, microsatellite instability hypermutated, copy-number low, and copy-number high. Uterine serous carcinomas share genomic features with ovarian serous and basal-like breast carcinomas. We demonstrated that the genomic features of endometrial carcinomas permit a reclassification that may affect post-surgical adjuvant treatment for women with aggressive tumours.

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It should come as no surprise that prisons can become breeding grounds for radicalisation and terrorism [1]. In many cases, extremist ideologies can flourish in prisons through recruiting vulnerable inmates to follow their path. Despite being a popular topic among researchers and policymakers, there still remain significant gaps in our understanding and many unanswered questions. This paper provides an overview on prisoner radicalisation, specifically exploring the role religion plays in prison and its link to radicalisation, prisoner vulnerability to radicalisation and the radicalisation process. The paper also outlines the current debate regarding where is the best place to house terrorist prisoners (isolation vs. separation). The paper concludes by identifying the major gaps in the literature and offers concluding remarks.

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Health care is an information-intensive business. Sharing information in health care processes is a smart use of data enabling informed decision-making whilst ensuring. the privacy and security of patient information. To achieve this, we propose data encryption techniques embedded Information Accountability Framework (IAF) that establishes transitions of the technological concept, thus enabling understanding of shared responsibility, accessibility, and efficient cost effective informed decisions between health care professionals and patients. The IAF results reveal possibilities of efficient informed medical decision making and minimisation of medical errors. Of achieving this will require significant cultural changes and research synergies to ensure the sustainability, acceptability and durability of the IAF

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Availability of health information is rapidly increasing and the expansion and proliferation of health information is inevitable. The Electronic Healthcare Record, Electronic Medical Record and Personal Health Record are at the core of this trend and are required for appropriate and practicable exchange and sharing of health information. However, it is becoming increasingly recognized that it is essential to preserve patient privacy and information security when utilising sensitive information for clinical, management and administrative processes. Furthermore, the usability of emerging healthcare applications is also becoming a growing concern. This paper proposes a novel approach for integrating consideration of information accountability with a perspective from usability engineering that can be applied when developing healthcare information technology applications. A social networking user case in the healthcare information exchange will be presented in the context of our approach.

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Health information systems are being implemented in countries by governments and regional health authorities in an effort to modernize healthcare. With these changes, there has emerged a demand by healthcare organizations for nurses graduating from college and university programs to have acquired nursing informatics competencies that would allow them to work in clinical practice settings (e.g. hospitals, clinics, home care etc). In this paper we examine the methods employed by two different countries in developing national level nursing informatics competencies expected of undergraduate nurses prior to graduation (i.e. Australia, Canada). This work contributes to the literature by describing the science and methods of nursing informatics competency development at a national level.

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As a cultural field, the world of fashion is usually associated with ‘exclusive’ qualities such as celebrity, glamour and the value of being young beautiful and size 10. By and large fashion design courses adhere to this model of fashion production and consumption training their graduates to compete successfully in an industry that seems far removed from the notions inclusivity and connection of community engagement. However, alternative models can and do exist. This presentation tells the story of ‘the stitchery collective’ a group of graduates from QUTs Creative Industries Fashion program who are developing an innovative model of fashion practice focussed around the ideas and values both of community engagement and community cultural development. Their work to date has included projects that target specific community groups – such as “Fashioning Social Inclusion” (2010-2011) that works with Brisbane women who belong to migrant and refugee communities, as well as more recently “WARM” a workshop delivered to children at the 3rd International Kids’ Carnival hosted by La Biennale in Venice (February 2012). A common thread across these programs is a desire to investigate the premise that clothing and dress can potentially act as a lingua franca that enables connection and communication; and that in fact aspects of ‘fashion’ culture can be mobilised in a community focussed context to enhance cultural exchange. The issue of how ‘learning’ happens in these contexts provides rich scope for analysis and discussion – given the innovative and engaged nature of the work our discussion will particularly highlight the ‘leaning through doing’ that occurs as well as the ‘collective’ nature of the design processes we develop and promote. The story will include the voices and perspectives of several of the stitchery collective’s members as well as community partners.

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Paris 1947 is the site of one of twentieth century fashion’s fictive highpoints. The New Look combined drama and poetics through an abiding rhetoric of elegance. In doing so it employed traditional modes of femininity, casting the woman of fashion in the guise of an ambiguous ‘new’ figure: half fairytale princess, half evil witch. This fashionable ideal was widely disseminated through key photographic representations, Willy Maywald’s 1947 image of the Bar Suit being a case in point. It was precisely such mythic formulations of ‘woman’ which Simone de Beauvoir was to take to task just two years later with the publication of The Second Sex. Driven by frustration with the status quo of real women, de Beauvoir recognised the role of fictive representations, both textual and visual in defining women. This paper reads key sections of The Second Sex through a comparative analysis of two iconic images of French women from 1947; Cartier-Bresson’s classic portrait of de Beauvoir and Willy Mayhold’s spectacular evocation of Christian Dior’s New Look. Cued by a compelling range of similarities between these images this paper explores links between fashion, feminism and fiction in mid-century French culture.