356 research outputs found

    The Adaptive Challenges of Leadership in Maine Schools

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    The current landscape of educational leadership in Maine schools offers a range of challenges and uncertainties that are seldom acknowledged or appreciated. These challenges can expose significant gaps between clinical, research-based knowledge and leadership practices in schools in Maine and across the United States. These endemic issues comprise what Heifetz (1994) calls “adaptive challenges.” Solutions to the leadership challenges raised by these issues don’t come quickly or easily and are in fact inherently confusing because they don\u27t have easy technical answers. In the context of schools, they include responses to the endemic challenges of poverty as it affects families and children in Maine, as well as the nature of instructional leadership to provide better supervision and evaluation of teachers. These issues also inform the principles and practices which guide the development of school leaders in Maine through the educational leadership program at the University of Maine College of Education and Human Development

    Special editors' column

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    Acknowledgements.: The Peformance Artistry of Bob Dylan: Conference Proceedings of the Caen Colloquiu

    The influence of neighbourhoods and the social environment on sedentary behaviour in older adults in three prospective cohorts

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    Sedentary behaviour is an emerging risk factor for poor health. This study aimed to identify ecological determinants of sedentary behaviour, for which evidence is currently scarce. The analysed participants were community dwelling adults aged around 79, 83, and 64 years from, respectively, the Lothian Birth Cohort 1936 (n=271) and the 1930s (n=119) and 1950s (n=310) cohorts of the West of Scotland Twenty-07 study. The outcome measure, percentage of waking time spent sedentary (sedentary time), was measured using an activPAL activity monitor worn continuously for seven days. Potential determinants included objective and subjective neighbourhood measures such as natural space, crime, social cohesion and fear of crime. Other determinants included measures of social participation such as social support, social group membership and providing care. Results from multivariable regression analyses indicated that providing care was associated with reduced sedentary time in retired participants in all cohorts. Fear of crime and perceived absence of services were associated with increased sedentary time for retired 1950s cohort members. Higher crime rates were associated with increased sedentary time in all cohorts but this was not significant after adjustment for socio-demographic characteristics. Most other neighbourhood and social participation measures showed no association with sedentary time

    Cognitive ability does not predict objectively measured sedentary behaviour: evidence from three older cohorts

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    Higher cognitive ability is associated with being more physically active. Much less is known about the associations between cognitive ability and sedentary behavior. Ours is the first study to examine whether historic and contemporaneous cognitive ability predicts objectively measured sedentary behavior in older age. Participants were drawn from 3 cohorts (Lothian Birth Cohort, 1936 [LBC1936] [n = 271]; and 2 West of Scotland Twenty-07 cohorts: 1950s [n = 310] and 1930s [n = 119]). Regression models were used to assess the associations between a range of cognitive tests measured at different points in the life course, with sedentary behavior in older age recorded over 7 days. Prior simple reaction time (RT) was significantly related to later sedentary time in the youngest, Twenty-07 1950s cohort (p = .04). The relationship was nonsignificant after controlling for long-standing illness or employment status, or after correcting for multiple comparisons in the initial model. None of the cognitive measures were related to sedentary behavior in either of the 2 older cohorts (LBC1936, Twenty-07 1930s). There was no association between any of the cognitive tests and the number of sit-to-stand transitions in any of the 3 cohorts. The meta-analytic estimates for the measures of simple and choice RT that were identical in all cohorts (n = 700) were also not significant. In conclusion, we found no evidence that objectively measured sedentary time in older adults is associated with measures of cognitive ability at different time points in life, including cognitive change from childhood to older age

    The role of cognitive appraisal and worry in BRCA1/2 testing decisions among a clinic population

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    Abstract Previous studies examining decision making in the context of genetic testing for BRCA1/2 gene mutations have been limited in their reliance on cross-sectional designs, lack of theoretical guidance, and focus on measures of intention rather than actual behavior. Informed by the Health Belief Model and other theories of self-regulation, the present study set out to examine the role of cognitive appraisal and worry in BRCA1/2 testing decisions. A total of 205 women completed baseline questionnaires prior to their genetic counselling appointment. Medical charts were audited to determine testing decisions. Bivariate analyses indicated that perceived severity of being a carrier and perceived benefits and barriers to testing were significantly associated with testing decisions. Perceived benefits remained significant in multivariate analyses. Moreover, multivariate analyses revealed a significant three-way interaction between perceived susceptibility, perceived severity, and worry about being a mutation carrier and testing decisions. Among women high in baseline worry, those high in perceived susceptibility but low in perceived severity were significantly more likely to undergo genetic testing than all other susceptibility/severity combinations (80% vs. 36.2-42.9% range; Wald test Π8.79, p < 0.01). These results support the need for researchers and practitioners to consider how interactions between cognition and worry may influence genetic testing decisions

    Adapting Low-Cost Drone Technology to CubeSats for Environmental Monitoring and Management: Harmful Algal Bloom Satellite-1 (HABsat-1)

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    HABsat-1 is designed to improve our understanding of algal bloom dynamics and their causes on land by addressing several current limiting factors for this application using existing satellites. For example, there is suboptimal imager design for water, insufficient spatial resolution for precise co-registration of surface observations, and too few satellites with such capabilities to defeat cloud cover in maritime, tropical and temperate climates. We will overcome these problems by merging a new low-cost multispectral imaging technology with a low-cost CubeSat bus. CubeSats cost roughly 1/100th to 1/1000th of most current long-life imaging satellites. Such cost decreases are necessary to improve upon the temporal coverage (number of appropriate satellites) and spatial resolution of current imaging satellites, such as Landsat-8, Sentinel-2 and Sentinel-3 (MERIS/OLCI). Numerous low-cost satellites reduce both overall mission cost and individual launch risks associated with large production satellites, such as Landsat, while providing the temporal and spatial resolution necessary for the study of highly dynamic and spatially variable algal blooms. A team of undergraduate aerospace engineers (the UC CubeCats), computer scientists and aerospace and geographic information science faculty have been funded by the Ohio Department of Higher Education and NOAA to adapt low-cost multispectral imagers designed for use on small drones to 3U CubeSats to further reduce the cost of environmental monitoring. This team will create a working on-orbit prototype for a constellation of CubeSat’s for routine drinking water monitoring known as Harmful Algal Bloom Satellite 1 (HABsat-1)
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