142 research outputs found

    Non-participant observers utilization of the 16PF source traits as role construct repertory test constructs in relation to therapist preference patterns.

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    Dept. of Psychology. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1979 .S673. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1979

    DEPRESSION, COGNITIVE DISTORTION AND SELF-EFFICACY IN CHRONIC-PAIN PATIENTS.

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    The purpose of this study was to investigate cognitive distortion, mood change, treatment expectancies and treatment choice in depressed and nondepressed chronic-pain outpatients, and to see whether a persuasive message could influence expectancies about treatment. Thirty patients referred for psychological assessment participated in the study. The Beck Depression Inventory (BDI), the Differential Personality Inventory (DPI), and the MMPI were used to assess depression. Mood change was measured by three administrations of the Profile of Mood States. Bandura\u27s definitions of self-efficacy and outcome expectancy were used to design a measure of expectancies about pain-management treatment. All subjects were provided with assessment feedback having an equal number of positive and negative statements. Measures of cognitive distortion were derived from free recall and from estimation of positiveness of feedback. Half of the subjects were randomly assigned to hear a brief persuasive self-efficacy message prior to feedback. The persuasive message was not effective in changing expectancies. Depressed subjects had lower expectancies regarding treatment and were more negatively biased in the estimation (but not free recall) of feedback. The DPI was the best predictor of expectancies and bias, followed by the BDI. Subjects\u27 moods became more positive over the course of the assessment. Those with positive expectancies were more likely to accept the pain management program.Dept. of Psychology. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1986 .S663. Source: Dissertation Abstracts International, Volume: 47-05, Section: B, page: 2187. Thesis (Ph.D.)--University of Windsor (Canada), 1986

    Ethnography Supports Changes to Student-Centered Instruction

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    Researchers developing automated education aids requested a work practice study of traditional and enhanced ways to track student achievement. The pilot included several elementary schools, where pre- and post-pilot processes were analyzed. Despite privacy challenges, audio recordings, interactions during user interviews, co-design sessions, and discussions of graphical representations provided rich data

    Parental characteristics and perspectives pertaining to neonatal visits to the emergency department: a multicentre survey

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    BACKGROUND: Parents take neonates to the emergency department for many reasons, often nonurgent, pressuring an already burdened system. We aimed to characterize these visits and families to identify potential strategies to decrease neonatal emergency department visits. METHODS: We developed and implemented a survey that explored characteristics of neonates and parents/guardians evaluated in the emergency department, perspectives of parents and use of health care services. Parents presenting with a neonate to the emergency department in 5 large academic hospitals in Ontario were surveyed between December 2013 and June 2015. We used descriptive statistics to report survey data and explored correlations between factors. RESULTS: A total of 1533 surveys were completed. The most common reasons for presenting were jaundice (441 [28.8%]) and feeding issues (251 [16.4%]). The majority of respondents (73.9% [1104/1494]) had received advice before going to the emergency department. In most cases (86.4% [954/1104]), this was from a health care provider, who frequently advised going to the emergency department. Although most parents (86.8% [1280/1475]) reported high confidence in caring for a sick or injured child, 42.3% (643/1519) were unsure of the severity, and most (90.4% [578/639]) of these parents felt that the infant required assessment immediately or the same day. Of parents who felt the condition was not serious, 83.2% (198/238) thought that same-day evaluation was required. Nearly half of respondents (44.4% [621/1400]) said they would have gone to their health care provider with a same-day appointment, and 28.1% (344/1225) would have gone to their care provider with a next-day appointment. INTERPRETATION: Parents\u27 reported confidence in caring for sick or injured infants does not match the perceived urgency of neonatal conditions, which likely contributes to emergency department overuse. Any system to decrease nonurgent emergency department use by neonates would need to be immediately responsive, providing same-day help

    Calcium in Mercury's Exosphere: Modeling MESSENGER Data

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    Mercury is surrounded by a surface-bounded exosphere comprised of atomic species including hydrogen, sodium, potassium, calcium, magnesium, and likely oxygen. Because it is collisionless. the exosphere's composition represents a balance of the active source and loss processes. The Mercury Atmospheric and Surface Composition Spectrometer (MASCS) on the MErcury Surface. Space ENvironment. GEochemistry. and Ranging (MESSENGER) spacecraft has made high spatial-resolution observations of sodium, calcium, and magnesium near Mercury's surface and in the extended, anti-sunward direction. The most striking feature of these data has been the substantial differences in the spatial distribution of each species, Our modeling demonstrates that these differences cannot be due to post-ejection dynamics such as differences in photo-ionization rate and radiation pressure. but instead point to differences in the source mechanisms and regions on the surface from which each is ejected. The observations of calcium have revealed a strong dawn/dusk asymmetry. with the abundance over the dawn hemisphere significantly greater than over the dusk. To understand this asymmetry, we use a Monte Carlo model of Mercury's exosphere that we developed to track the motions of exospheric neutrals under the influence of gravity and radiation pressure. Ca atoms can be ejected directly from the surface or produced in a molecular exosphere (e.g., one consisting of CaO). Particles are removed from the system if they stick to the surface or escape from the model region of interest (within 15 Mercury radii). Photoionization reduces the final weighting given to each particle when simulating the Ca radiance. Preliminary results suggest a high temperature ( I-2x 10(exp 4) K) source of atomic Ca concentrated over the dawn hemisphere. The high temperature is consistent with the dissociation of CaO in a near-surface exosphere with scale height <= 100 km, which imparts 2 eV to the freshly produced Ca atom. This source region and energy are consistent with data from the three MESSENGER flybys; whether this holds true for the data obtained in orbit is under investigation

    MESSENGER Searches for Less Abundant or Weakly Emitting Species in Mercury's Exosphere

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    Mercury's exosphere is composed of material that originates at the planet's surface, whether that material is native or delivered by the solar wind and micrometeoroids. Many exospheric species have been detected by remote sensing, including H and He by Mariner 10, Na, K, and Ca by ground-based observations, and H, Na, Ca, Mg, and Ca+ by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft. Other exospheric species, including Fe, AI, Si, 0, S, Mn, CI, Ti, OH, and their ions, are expected to be present on the basis of MESSENGER surface measurements and models of Mercury's surface chemistry. Here we report on searches for these species made with the Ultraviolet and Visible Spectrometer (UVVS) channel of the Mercury Atmospheric and Surface Composition Spectrometer (MASCS). No obvious signatures of the listed species have yet been observed in Mercury's exosphere by the UVVS as of this writing. It is possible that detections are elusive because the optimum regions of the exosphere have not been sampled. The Sun-avoidance constraints on MESSENGER place tight limits on instrument boresight directions, and some regions are probed infrequently. If there are strong spatial gradients in the distribution of weakly emitting species, a high-resolution sampling of specific regions may be required to detect them. Summing spectra over time will also aid in the ability to detect weaker emission. Observations to date nonetheless permit strong upper limits to be placed on the abundances of many undetected species, in some cases as functions of time and space. As those limits are lowered with time, the absence of detections can provide insight into surface composition and the potential source mechanisms of exospheric material

    Early MESSENGER Results for Less Abundant or Weakly Emitting Species in Mercury's Exosphere

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    Now that the Messenger spacecraft is in orbit about Mercury, the extended observing time enables searches for exospheric species that are less abundant or weakly emitting compared with those for which emission has previously been detected. Many of these species cannot be observed from the ground because of terrestrial atmospheric absorption. We report here on the status of MESSENGER orbital-phase searches for additional species in Mercury's exosphere

    Mercury's Exosphere During MESSENGER's Second Flyby: Detection of Magnesium and Distinct Distributions of Neutral Species

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    During MESSENGER's second Mercury flyby, the Mercury Atmospheric and Surface Composition Spectrometer observed emission from Mercury's neutral exosphere. These observations include the first detection of emission from magnesium. Differing spatial distributions for sodium, calcium, and magnesium were revealed by observations beginning in Mercury's tail region, approximately 8 Mercury radii anti-sunward of the planet, continuing past the nightside, and ending near the dawn terminator. Analysis of these observations, supplemented by observations during the first Mercury flyby as well as those by other MESSENGER instruments, suggests that the distinct spatial distributions arise from a combination of differences in source, transfer, and loss processes
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