1,952 research outputs found

    What is the prognostic value of stress echocardiography for patients with atypical chest pain?

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    Patients with atypical chest pain and no history of cardiovascular events (coronary artery disease, unstable angina, or history of percutaneous transthoracic coronary angioplasty [PTCA]) and a negative stress echocardiography test are unlikely to experience a cardiovascular event in the next 1 to 4 years. However, the positive predictive value of the test in this population is low, indicating that a positive stress echocardiography is less useful for prognostic purposes (strength of recommendation: B, based on multiple cohort studies)

    Negotiation of Face between Bereaved Parents and Their Social Networks

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    For many bereaved parents, talking about their child\u27s death and their grief experiences is a way to cope with grief. Unfortunately, communicating with others often proves difficult for parents and their social networks, often because of face threats. The purpose of the present study is to identify how the face needs of parents and their social network is communicatively negotiated. Fifty-three bereaved parents were interviewed and the data analyzed, resulting in a theme of protection. The findings highlight ways in which both the parents\u27 and others\u27 positive and negative faces were co-managed. These findings highlight the complex nature of facework in social networks at individual, relational, and systemic levels

    Enacting Privacy Rules and Protecting Disclosure Recipients: Parents’ Communication with Children Following the Death of a Family Member

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    Given the probability that the death of a family member will occur before a child has reached adulthood, the purpose of this project was to understand what motivates parents to either talk or not talk about a loved one\u27s death with their children. Using Communication Privacy Management to inductively analyze interviews, we found parents were motivated to talk to their children about death because they wanted their children to be informed. This is reflected in the first primary theme, Recalibrating Family of Origin Privacy Orientation Rules: Motivations for Revealing. Two secondary themes further explained parents\u27 motivations to reveal: death as a part of life and modeling grief. Even though parents wanted to inform their children, they also wanted to protect their children and this protection is demonstrated in the second primary theme, Protecting Children: Motivations for Balancing Revealing/Concealing as well as the secondary themes of selective honesty as a rule regulator and religion as a reference point

    Crucial moments in the chair experience: A case study approach

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    Department chairs are often called upon to make tough decisions (e.g., personnel, scheduling, strategic planning, curriculum, resources). Presenters of this interactive workshop will share case studies written by higher education administrators from across the nation, offer persepctives, and open it up for interaction, brainstorming and discussion for addressing difficult situations

    Defining Family: Naming, Orientation, and Redemption in the Case of Terri Schiavo

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    This paper undertakes a detailed analysis of the Terri Schiavo case as it was covered in popular media. Drawing on Burkean theory, we argue a critical issue in the case was a struggle between Terri\u27s parents and husband to be seen as the more legitimate family in order to determine the duration and extent of Terri \u27s medical care. We discuss how the private debate over Terri\u27s health and the decision to remove her feeding tube entered into the public scenes of legal and political action. This shift to the public scene represented problems for the parties directly involved in the debate and turned Terri into a symbol of the larger right-to-die controversy

    “Exploring the Basement of Social Justice Issues”: A Graduate Upon Graduation

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    Photograph of rides building up, taken J. Stevens' Fair, 20 June 1961 whole general view, looking West. See Leeson's notebook 9, pages 92-95 for notes

    Stable fiber-illumination for extremely precise radial velocities with NEID

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    NEID is a high-resolution red-optical precision radial velocity (RV) spectrograph recently commissioned at the WIYN 3.5 m telescope at Kitt Peak National Observatory, Arizona, USA. NEID has an extremely stable environmental control system, and spans a wavelength range of 380 to 930 nm with two observing modes: a High Resolution (HR) mode at R \sim 112,000 for maximum RV precision, and a High Efficiency (HE) mode at R \sim 72,000 for faint targets. In this manuscript we present a detailed description of the components of NEID's optical fiber feed, which include the instrument, exposure meter, calibration system, and telescope fibers. Many parts of the optical fiber feed can lead to uncalibratable RV errors, which cannot be corrected for using a stable wavelength reference source. We show how these errors directly cascade down to performance requirements on the fiber feed and the scrambling system. We detail the design, assembly, and testing of each component. Designed and built from the bottom-up with a single-visit instrument precision requirement of 27 cm s1\textrm{cm~s}^{-1}, close attention was paid to the error contribution from each NEID subsystem. Finally, we include the lab and on-sky tests performed during instrument commissioning to test the illumination stability, and discuss the path to achieving the instrumental stability required to search for a true Earth twin around a Solar-type star.Comment: Accepted in A

    The NEID precision radial velocity spectrometer: Commissioning of the Port Adapter

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    In October 2019, the NEID instrument (PI Suvrath Mahadevan, PSU) was delivered to the WIYN 3.5 m Telescope at Kitt Peak National Observatory. Commissioning began shortly after delivery, but was paused due to a COVID-19 imposed observatory shutdown in March 2020. The observatory has recently reopened and NEID commissioning has resumed. NEID is an optical (380-930 nm), fiber-fed, precision Doppler radial velocity system developed as part of the NN-EXPLORE partnership. While the spectrometer and calibration system are maintained in a highly controlled environment on the basement level of the WIYN, the NEID Port Adapter mounts directly to a bent-Cassegrain port on the telescope and is responsible for precisely and stably placing target light on the science fibers. Here we present a brief overview of the as-built Port Adapter and its sub-components. We then discuss preliminary on-sky performance compared to requirements as well as next steps as we complete commissioning
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