819 research outputs found

    Academic Mentorship in Honors

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    A recently developed program at Eastern Kentucky University (EKU) uses course-embedded tutors called Writing Fellows to provide first-year students with an academic peer mentor. Writing Fellows are assigned to an English 101 class which they attend, and outside of the class, they meet individually with students in consultations concerning their academic projects or papers. Since the Honors Program at EKU currently lacks a sustainable peer mentorship program, the author Tori Abbott attempted to combine elements of the Writing Fellow program with the needs of Honors students. The mentor for this Honors thesis, Katie Patton, taught two sections of the Honors student success seminar and offered to let the author use these courses to test her theory. The two student mentors for these courses volunteered to participate in a pilot version of this peer mentorship model. Their added responsibilities primarily included meeting with the students one-on-one outside of the classroom. This study, “Academic Mentorship in Honors,” used surveys and feedback from the mentors to evaluate whether or not such a model would benefit the Honors Program and what changes would be need to be made in the future. The results of the studies suggested that students who met with their mentors outside of the classroom as a part of their course felt more socially integrated than students in a control class who were not required to meet with their mentors

    Examining Arctic Melt Pond Dynamics via High Resolution Satellite Imagery

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    The Arctic Ocean is a rapidly changing environment, and a key observational system for monitoring climate change. The Arctic is going under a rapid transition from thicker, multi-year ice, to thinner first-year ice, that may have many potential consequences. As first year Arctic sea ice begins to retreat in the spring and early summer, melting snow and ice form ponds on the surface- “melt ponds”. These melt ponds increase light transmission to the water column, resulting in warming and increased primary production under the ice. Recent advances in high resolution satellite imagery now allow us to monitor the development and propagation of melt ponds from space. 14 Worldview images (privately owned) of first year ice in the Chukchi Sea with sub-meter scale spatial resolution were recorded from June and July 2018 and classified into 4 distinct classes- Un-ponded Ice, Dark Melt Pond, Light Melt Pond, and Open Water. Classification data were analyzed for melt pond abundance (pond fraction) and size. Pond growth can be described by either a linear or logistic growth function (r2 = 0.86). Additionally, previously recorded light transmission values can be used to create an under-ice light availability budget based on class distribution data. This allows for estimates of primary production and the prediction of below ice phytoplankton blooms. As the Arctic continues to experience an extreme regime shift, increased monitoring of melt ponds and other rapidly changing systems will be essentialhttps://digitalcommons.odu.edu/gradposters2021_sciences/1011/thumbnail.jp

    Physiological and Cognitive Factors Related to Human Performance During the Grand Canyon Rim-to-Rim Hike

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    Exposure to extreme environments is both mentally and physically taxing, leading to suboptimal performance and even life-threatening emergencies. Physiological and cognitive monitoring could provide the earliest indicator of performance decline and inform appropriate therapeutic intervention, yet little research has explored the relationship between these markers in strenuous settings. The Rim-to-Rim Wearables at the Canyon for Health (R2RWATCH) study is a research project at Sandia National Laboratories funded by the Defense Threat Reduction Agency to identify which physiological and cognitive phenomena collected by non-invasive wearable devices are the most related to performance in extreme environments. In a pilot study, data were collected from civilians and military warfighters hiking the Rim-to-Rim trail at the Grand Canyon. Each participant wore a set of devices collecting physiological, cognitive, and environmental data such as heart rate, memory, ambient temperature, etc. Promising preliminary results found correlates between physiological markers recorded by the wearable devices and decline in cognitive abilities, although further work is required to refine those measurements. Planned follow-up studies will validate these findings and further explore outstanding questions

    Effect of androgen treatment during foetal and/or neonatal life on ovarian function in prepubertal and adult rats

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    We investigated the effects of different windows of testosterone propionate (TP) treatment during foetal and neonatal life in female rats to determine whether and when excess androgen exposure would cause disruption of adult reproductive function. Animals were killed prepubertally at d25 and as adults at d90. Plasma samples were taken for hormone analysis and ovaries serial sectioned for morphometric analyses. In prepubertal animals, only foetal+postnatal and late postnatal TP resulted in increased body weights, and an increase in transitory, but reduced antral follicle numbers without affecting total follicle populations. Treatment with TP during both foetal+postnatal life resulted in the development of streak ovaries with activated follicles containing oocytes that only progressed to a small antral (smA) stage and inactive uteri. TP exposure during foetal or late postnatal life had no effect upon adult reproductive function or the total follicle population, although there was a reduction in the primordial follicle pool. In contrast, TP treatment during full postnatal life (d1-25) resulted in anovulation in adults (d90). These animals were heavier, had a greater ovarian stromal compartment, no differences in follicle thecal cell area, but reduced numbers of anti-Mullerian hormone-positive smA follicles when compared with controls. Significantly reduced uterine weights lead reduced follicle oestradiol production. These results support the concept that androgen programming of adult female reproductive function occurs only during specific time windows in foetal and neonatal life with implications for the development of polycystic ovary syndrome in women

    Does a Healthy Weight Body Mass Index at Onset of Idiopathic Intracranial Hypertension Change the Outcomes? A United Kingdom Prospective Cohort Study

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    Idiopathic intracranial hypertension (IIH) predominantly affects reproductive-aged females with obesity. However, the prevalence and impact of a healthy weight body mass index (BMI) at disease presentation is not known. This study aimed to evaluate the visual and headache outcomes stratified by the presenting BMI. This was a longitudinal prospective cohort study (IIH Life) based on a tertiary neuro-ophthalmology IIH service, University Hospitals Birmingham NHS Trust, United Kingdom, recruiting consecutive patients living with IIH between 2012 and 2021. Those with a presenting BMI were included. The outcome measures included visual outcomes of LogMAR visual acuity, Humphrey visual field perimetric mean deviation (PMD), optical coherence tomography (OCT) measurements, and headache outcomes of frequency, severity, and Headache Impact Test-6 score. Three hundred seventy-five people with IIH and a documented baseline BMI. About 3.7% of the entire cohort had a healthy weight BMI at IIH presentation and 15.5% BMI < 30 kg/m2. The baseline PMD was worse in patients without obesity; however, OCT papilloedema measures were similar. The presence of obesity was associated with a small but significant greater worsening in visual acuity but slower macular ganglion cell layer loss. There was no impact on PMD or papilloedema prognosis related to baseline obesity. The headache outcomes showed heterogeneity, with worse baseline headache frequency in patients with obesity. No BMI group was associated with worse headache outcomes. Patients with a healthy weight BMI or those without obesity at baseline make up a small proportion of IIH patients. BMI at presentation does not appear to influence long-term visual or headache outcomes

    Langmuir Films of Flexible Polymers Transferred to Aqueous/Liquid Crystal Interfaces Induce Uniform Azimuthal Alignment of the Liquid Crystal

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    We reported recently that amphiphilic polymers can be assembled at interfaces created between aqueous phases and thermotropic liquid crystals (LCs) in ways that: (i) couple the organization of the polymer to the order of the LC and (ii) respond to changes in the properties of aqueous phases that can be characterized as changes in the optical appearance of the LC. This investigation sought to characterize the behavior of aqueous-LC interfaces decorated with uniaxially compressed thin films of polymers transferred by Langmuir-Schaefer (LS) transfer. Here, we report physicochemical characterization of interfaces created between aqueous phases and the thermotropic LC 4-cyano-4′-pentylbiphenyl (5CB) decorated with Langmuir films of a novel amphiphilic polymer (polymer 1), synthesized by the addition of hydrophobic and hydrophilic side chains to poly(2-vinyl-4,4′-dimethylazlactone). Initial characterization of this system resulted in the unexpected observation of uniform azimuthal alignment of 5CB after LS transfer of the polymer films to aqueous-5CB interfaces. This paper describes characterization of Langmuir films of polymer 1 hosted at aqueous-5CB interfaces as well as the results of our investigations into the origins of the uniform ordering of the LC observed upon LS transfer. Our results, when combined, support the conclusion that uniform azimuthal alignment of 5CB is the result of long-range ordering of polymer chains in the Langmuir films (in a preferred direction orthogonal to the direction of compression) that is generated during uniaxial compression of the films prior to LS transfer. Although past studies of Langmuir films of polymers at aqueous-air interfaces have demonstrated that in-plane alignment of polymer backbones can be induced by uniaxial compression, these past reports have generally made use of polymers with rigid backbones. One important outcome of this current study is thus the observation of anisotropy and long-range order in Langmuir films of a novel flexible polymer. A second important outcome is the observation that the existence, extent, and dynamics of this order can be identified and characterized optically by transfer of the Langmuir film to a thin film of LC. Additional characterization of Langmuir films of two other flexible polymers [poly(methyl methacrylate) and poly(vinyl stearate)] using this method also resulted in uniform azimuthal alignment of 5CB, suggesting that the generation of long-range order in uniaxially compressed Langmuir films of polymers may also occur more generally over a broader range of polymers with flexible backbones

    Cultural Humility and Cultural Brokering in Professional Training: Insights from People of Color (POC) and Persons with Disabilities (PWD)

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    This conceptual paper reflects the collaborative work of LEND trainees and faculty exploring the need to shift from “cultural competencies” to “cultural humility” in training programs. The authors draw on their lived experiences as members of racially/ethnically marginalized groups, members of the disability community, and advocates for equity in accessibility. Collectively, the authors highlight some of the challenges and opportunities in supporting diverse trainees in professional- and discipline-specific training programs. and in the provision of services the trainees provide to care-recipients across a variety of fields. This paper includes a series of case vignettes in order to: examine individual authors’ experiences working in health-related systems as a representatives from a marginalized communities as individuals who identify as people of color (POC), persons with a disability (PWD) or PWD-POC. Informed by literature in the field alongside lived experiences, this paper identifies problematic systemic, attitudinal, and cultural elements that can limit the benefit that trainees receive in training programs and offers suggestions for mediating these limiting factors to more successfully mentor trainees who are POC, PWD, or PWD-POC. Implications for training programs in addressing diversity, equity, and inclusion through the incorporation of cultural humility and cultural brokering are highlighted

    Contemporary Influences on the Role of Imams in Britain: A Critical Analysis of Leadership and Professionalisation for the Imamate in 21st Century Britain

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    This article is based on the findings from a research project, referred to hereafter as #ImamsBritain, commenced with a series of discussions with Imams in the north of England. The role of the Imam has undergone far-reaching changes over the last thirty years chiefly due to the changing socio-economic and political climate, which in turn has directly affected the needs of Muslim communities. Consequently, Imams are now seen as professionals who need a wider range of pastoral care skills that go beyond those of their traditional role, which was mainly focused on religious teaching and spiritual guidance. The second stage of the data analysis for the research involved the exploratory Group Delphi technique, in which the Imam respondents underwent the processes of two critical reflections on the data collected. The resultant findings reflect their individual perceptions of the kind of training and development they need. This provides a unique framework for constructing a professional guide for Imams in Great Britain. The discussions and critical analyses in this paper draw on the discourses of professionalisation and pastoral care and relevant reports and reviews on Imam training in Europe and Canada

    Two loop divergences studied with one loop Constrained Differential Renormalization

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    In the context of Differential Renormalization, using Constrained Differential Renormalization rules at one loop, we show how to obtain concrete results in two loop calculations without making use of Ward identities. In order to do that, we obtain a list of integrals with overlapping divergences compatible with CDR that can be applied to various two loop background field calculations. As an example, we obtain the two loop coefficient of the beta function of QED, SuperQED and Yang-Mills theory.Comment: 33 pages, 5 figure
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