372 research outputs found

    NRA: First Multiwavelength, Multiple Layer Doppler Imaging of an Active Binary

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    In this final report, grantee reports on data obtained from 26 orbits of continuous observing time with the Hubble Space Telescope's Goddard High Resolution Spectrograph in order to produce a comprehensive 2-D image of the RSCVn V824 Ara at MgII, CIV and for the first time ever, the coronal diagnostic line of FeXXI 1356A

    The First Multiple Layer Doppler Imaging of an Active Binary

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    Preliminary results were presented at the Cool Stars, Stellar Systems, and the Sun in Cambridge, MA in July 1997. A copy of the two published papers (in press) is attached. The project has met or exceeded our expectations. The rapid readout data have given us an excellent data set to model in detail the flare behavior. The large number of spectral features observed between the EUVE and HST data have allowed us to compute a mean model atmosphere and compare the results to another well studied system (HR 1099 - Cycle 3 HST observation previously published). I developed a model (anisotropic macroturbulence) that fits the CIV and MgII better than previously achieved. These results have been constrained by the EUVE data. In early studies, 2 gaussians were applied to the profile. The interpretation of these features was unclear. The anisotropic macroturbulence model fits the data better than previously possible and gives a physically reasonable interpretation: there appears to be an asymmetrical distribution between the radial and tangential velocity fields. This is similar to case of the Sun

    Probing surface structure on late-type stars with FRESIP

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    We discuss possible secondary scientific results obtainable with the FRESIP satellite in regards to surface features on solar-like stars

    A multiwavelength campaign of active stars with intermediate rotation rates

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    Near-to-simultaneous ultraviolet and visual spectroscopy of two moderate nu(sin i) RS CVn systems, V815 Herculis (nu(sin i) = 27 km s(exp -1)) and LM Pegasi (nu(sin i) = 24 km s(exp -1)), are presented along with contemporaneous UBV (RI)(sub c) - band photometry. These data were used to probe inhomogeneities in the chromospheres and photospheres, and the possible relationship between them. Both systems show evidence for rotationally modulated chromospheric emission, generally varying in antiphase to the photospheric brightness. A weak flare was observed at Mg II for V815 Her. In the case of IM Peg, we use photometry and spectra to estimate temperatures, sizes, and locations of photospheric spots. Further constraints on the spot temperature is provided by TiO observations. For IM Peg, the anticorrelation between chromospheric emission and brightness is discussed in the context of a possible solar-like spot cycle

    Chromospheric CA II H and K and H alpha Emission in Single and Binary Stars of Spectra Types F6--M2

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    New observations of the Ca II H and K and H-epsilon region and/or the Balmer H-alpha line are presented for 100 mostly very active stars but also for weak or inactive stars with suspected activity. Correlations between chromospheric activity at Ca II H and K and H-alpha and effective surface temperature and rotation are identified, and several new stars with chromospheric Ca II H and K emission are discovered. No single activity-rotation relation can be derived for all luminosity classes, and there is clear evidence that evolved stars are generally more active than main-sequence stars of the same rotation period. Binary within the evolved stars appears to play no role, while main-sequence binary stars show generally higher levels of activity than their single counterparts. Chromospheric emission in the Ca II H and K lines depends on surface temperature in that flux declines with cooler temperature

    The role of tenacious versus flexible goal pursuit in the vulnerability to bipolar disorder

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    The vulnerability to bipolar disorder is characterized by dysregulated goal-related behavior, the setting of ambitious and extreme goals, and increases in goal approach behaviors. To date, no studies have investigated the nature of goal pursuit behaviors amongst individuals at a behavioral risk for bipolar disorder in terms of whether goal pursuit is characterized by a tenacious active striving for goals or a more flexible changeable focus on goals. A non-clinical sample of 168 participants completed online measures of mood, bipolar-vulnerability, reward sensitivity, goal-related perfectionist tendencies, tenacious goal pursuit and flexible goal adjustment behaviors. Our findings demonstrate that bipolar-vulnerability is characterized by the tenacious, not flexible, pursuit of goals, in combination with low regulation of goal behavior, and tendencies towards narcissistic and self-critical perfectionism indicative of setting high ambitious standards and making overly harsh self-judgments when such standards are not met. These findings are similar to those from clinical bipolar samples where there is evidence of prolonged symptom recoveries after the experience of goal frustrations and failures. Reducing the tenacious, active striving for goals amongst at-risk individuals may be a potential avenue for early intervention

    Implementing adult safeguarding practices in National Health Service Mental Health Trusts: challenges for leadership and service provision

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    The abuse and neglect of adults at risk is increasingly recognised as a social problem in the U.K. Policy development for the protection of at risk adults has seen substantial growth since the publication of the No Secrets (2000) guidance. Despite cumulative evidence that National Health Service (NHS) mental health services have been slow to engage with the national adult safeguarding agenda, there is a paucity of research in this area. This poster describes a Grounded Theory study designed to explore the use and implementation of adult safeguarding practices and procedures in three NHS mental health trusts. It specifically presents the findings of sixteen interviews with strategic leaders for adult safeguarding and operational personnel. It will discuss the conceptual components that are central to the implementation of effective adult safeguarding procedures in mental health. It further highlights barriers to practice and demonstrate the need for multi-dimensional approaches within service contexts to ensure that factors inevitably affecting mental health service users are anticipated. Such factors include: the perpetuation of social inequalities and power differentials within healthcare settings, the calamitous relationship between the symptoms of abuse and mental illness, and the internalised collusive culture historical to mental health settings

    Quality of life research: a case for combining photo-elicitation with interpretative phenomenological analysis

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    In this paper we provide practical and theoretical discussion of the use of two complementary research methods to explore quality of life. We present a case example of the use of photo-elicitation alongside Interpretative Phenomenological Analysis and use examples from our research with people living with paraplegia and chronic pain to demonstrate how these methods can be combined to provide a participant-led understanding of QoL. This discussion includes consideration of practical and ethical issues relevant to others wishing to combine these research methods. Furthermore, we highlight some of the potential practical and therapeutic opportunities provided by the approach through an illustration of how photographs work to enhance self-reflection and promote hermeneutic sense making

    ‘I am free in my wheelchair but pain does have a say in it though’: The meaning and experience of quality of life when living with paraplegia and chronic pain

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    This study investigated how wheelchair-using individuals with paraplegia and chronic pain make sense of the factors associated with quality of life based on interviews using photo-elicitation and interpretative phenomenological analysis. Three superordinate themes emerged in the analysis: experiencing quality of life through the perception of self and identity, interpersonal relationships as facilitators and barriers to quality of life and life in a wheelchair: pain experience and management. Quality of life for those living with paraplegia and chronic pain is experienced as a complex interaction across several life domains. The use of photographs may improve the communication of pain-related experiences and understanding by healthcare staff

    A Social Norms Approach intervention to address misperceptions of anti-vaccine conspiracy beliefs amongst UK parents

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    Anti-vaccine conspiracy beliefs among parents can reduce vaccination intentions. Parents’ beliefs in anti-vaccine conspiracy theories are also related to their perceptions of other parents’ conspiracy beliefs. Further, research has shown that parents hold misperceptions of anti-vaccine conspiracy belief norms: UK parents over-estimate the anti-vaccine conspiracy beliefs of other parents. The present study tested the effectiveness of a Social Norms Approach intervention, which corrects misperceptions using normative feedback, to reduce UK parents’ anti-vaccine conspiracy beliefs and increase vaccination intentions. At baseline, 202 UK parents of young children reported their personal belief in anti-vaccine conspiracy theories, future intentions to vaccinate, and their perceptions of other UK parents’ beliefs and intentions. Participants were then randomly assigned to a normative feedback condition (n = 89) or an assessment-only control condition (n = 113). The normative feedback compared participants’ personal anti-vaccine conspiracy beliefs and perceptions of other UK parents’ beliefs with actual normative belief levels. Parents receiving the normative feedback showed significantly reduced personal belief in anti-vaccine conspiracy beliefs at immediate post-test. As hypothesised, changes in normative perceptions of anti-vaccine conspiracy beliefs mediated the effect of the intervention. The intervention, did not directly increase vaccination intentions, however mediation analysis showed that the normative feedback increased perceptions of other parents’ vaccination intentions, which in turn increased personal vaccination intentions. No significant effects remained after a six-week follow-up. The current research demonstrates the potential utility of Social Norms Approach interventions for correcting misperceptions and reducing anti-vaccine conspiracy beliefs among UK parents. Further research could explore utilising a top-up intervention to maintain the efficacy
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