4,445 research outputs found

    Crisis of Confidence: Presidential Decision-Making In the Carter Administration

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    A play based on the life and career of U.S. President, Jimmy Carter

    Using the Theory of Signal Detection to Improve Ad Recognition Testing.

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    This is the published version. Copyright 1986 American Marketing Association.Recognition tests are a very popular means of assessing the memory effectiveness of advertisements. Unfortunately the recognition scores obtained by current methods reflect both the memory for an advertisement and the response biases of the respondents. The authors introduce the theory of signal detection (TSD) which can be used to secure independent estimates of memory and response bias in recognition tests. They discuss how TSD can be used to improve ad recognition testing

    Photoionization and Photoelectric Loading of Barium Ion Traps

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    Simple and effective techniques for loading barium ions into linear Paul traps are demonstrated. Two-step photoionization of neutral barium is achieved using a weak intercombination line (6s2 1S0 6s6p 3P1, 791 nm) followed by excitation above the ionization threshold using a nitrogen gas laser (337 nm). Isotopic selectivity is achieved by using a near Doppler-free geometry for excitation of the triplet 6s6p 3P1 state. Additionally, we report a particularly simple and efficient trap loading technique that employs an in-expensive UV epoxy curing lamp to generate photoelectrons.Comment: 5 pages, Accepted to PRA 3/20/2007 -fixed typo -clarified figure 3 caption -added reference [15

    Future of Public Parks: Policy, Practice and Research

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    On Thursday 13th July 2017, the University of Leeds hosted a major one-day national conference entitled ‘The Future of Public Parks’ at The British Academy in London. The conference was generously sponsored by the Leeds Social Sciences Institute and idverde, with support from The Parks Alliance, Historic England and Groundwork. Some 79 delegates participated in a lively and engaging event which drew together innovative thinking and learning from policy, practice and research on ways to maximise the value of parks as public assets in the twenty-first century, and to consider challenges that threaten the sustainability of public parks in the future. The event brought together academics from diverse disciplines, funding bodies, policy-makers and practitioners from the across the public, voluntary and private sectors. At a time when the future of public parks is both in the balance and in the national spotlight, the presenters and delegates explored important issues and challenges that inform diverse models of park management whether local authorities, trusts, charities or private sector. These included questions about health and well-being, social and educational use, community involvement and strategies for generating income. The conference provided a timely opportunity to foster a research-informed, policy and practice-orientated dialogue about park futures and offered a platform for advancing public debate in light of the findings and recommendations of the Communities and Local Government Select Committee Inquiry. Importantly, it provided a unique opportunity for multi-disciplinary, inter-professional and cross-sectoral debate that enabled delegates to explore common questions, mutual strategies and shared interest in promoting the social role and value of public parks

    A Catalog of Absorption Lines in Eight HST/STIS E230M 1.0 < z < 1.7 Quasar Spectra

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    We have produced a catalog of line identifications and equivalent width measurements for all absorption features in eight ultraviolet echelle quasar spectra. These spectra were selected as having the highest signal-to-noise among the HST/STIS spectra obtained with the E230M grating. We identify 56 metal-line systems toward the eight quasars, and present plots of detected transitions, aligned in velocity-space. We found that about 1/4 - 1/3 of the features in the Lya forest region, redward of the incidence of the Lyb forest, are metal lines. High ionization transitions are common. We see both O VI and C IV in 88 - 90% of the metal-line systems for which the spectra cover the expected wavelength. Si III is seen in 58%, while low ionization absorption in C II, Si II, and/or Al II is detected in 50% of the systems for which they are covered. This catalog will facilitate future studies of the Lya forest and of metal-line systems of various types.Comment: 13 pages, 2 figures, submitted to Monthly Notices of the Royal Astronomical Society, a complete version with the appendix and all figures is available at http://www.astro.psu.edu/users/misawa/pub/Paper/qalcat.pdf.g

    Metabolomic profiles are gender, disease and time specific in the interleukin-10 gene-deficient mouse model of inflammatory bowel disease.

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    Metabolomic profiling can be used to study disease-induced changes in inflammatory bowel diseases (IBD). The aim of this study was to investigate the difference in the metabolomic profile of males and females as they developed IBD. Using the IL-10 gene-deficient mouse model of IBD and wild-type mice, urine at age 4, 6, 8, 12, 16, and 20 weeks was collected and analyzed by nuclear magnetic resonance (NMR) spectroscopy. Multivariate data analysis was employed to assess differences in metabolomic profiles that occurred as a consequence of IBD development and severity (at week 20). These changes were contrasted to those that occurred as a consequence of gender. Our results demonstrate that both IL-10 gene-deficient and wild-type mice exhibit gender-related changes in urinary metabolomic profile over time. Some male-female separating metabolites are common to both IL-10 gene-deficient and control wild-type mice and, therefore, appear to be related predominantly to gender maturation. In addition, we were able to identify gender-separating metabolites that are unique for IL-10 gene-deficient and wild-type mice and, therefore, may be indicative of a gender-specific involvement in the development and severity of the intestinal inflammation. The comparison of the gender-separating metabolomic profile from IL-10 gene-deficient mice and wild-type mice during the development of IBD allowed us to identify changes in profile patterns that appear to be imperative in the development of intestinal inflammation, but yet central to gender-related differences in IBD development. The knowledge of metabolomic profile differences by gender and by disease severity has potential clinical implications in the design of both biomarkers of disease as well as the development of optimal therapies

    Optimizing outpatient total hip arthroplasty: perspectives of key stakeholders

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    Background Advances in surgical techniques combined with multimodal analgesia and early rehabilitation have potentiated early mobilization in patients undergoing total hip arthroplasty (THA). Given an increasing push from patients to accelerate recovery and health care budgetary limitations, there has been growing interest in the implementation of outpatient THA in selected patients. Understanding the patient and primary caregiver experience of outpatient THA is important to optimize care. We aimed to gain insight into patient and caregiver perspectives regarding the perceived advantages and disadvantages of same-day discharge to identify areas of care that can be improved. Method Using a qualitative descriptive approach, we conducted in-depth semistructured interviews with patient-primary caregiver dyads who experienced same-day discharge or standard care after primary THA with the direct anterior approach in 2016-2017. Two members of the research team coded the data independently, implementing a thematic and content analysis. Results Twenty-eight participants (16 same-day discharge, 12 standard care) were included. Both groups experienced high levels of satisfaction with their care pathway. Concerns and challenges identified in both groups pertained to mobility, pain, self-care and caregiver support. Challenges and concerns unique to same-day discharge were identified regarding expectations for recovery, medications and their impact on mobility, the timing of postoperative education and the availability of formal care. Conclusion Outpatient THA can be implemented with high patient and caregiver satisfaction. Preoperative education, clarification of recovery processes and expectations, and proactively addressing concerns related to caregiving are important

    Spaces Apart: Public Parks and the Differentiation of Space in Leeds, 1850-1914

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    While the Victorian ideal of the public park is well understood, we know less of how local governors sought to realize this ideal in practice. This article is concerned with park-making as a process – contingent, unstable, open – rather than with parks as outcomes – determined, settled, closed. It details how local governors bounded, designed and regulated park spaces to differentiate them as ‘spaces apart’ within the city, and how this programme of spatial governance was obstructed, frustrated and diverted by political, environmental and social forces. The article also uses this historical analysis to provide a new perspective on the future prospects of urban parks today
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