4,278 research outputs found
Could the library be dismantled/role of unique holdings in modern times
I have been asked by administration, how much of our collection could go into storage. They optimistically hoping for a room or two for faculty/staff offices, as some buildings need renovation or need to be closed due to safety issues. Clearly, much of the population believes that all/most library materials are available on-line – free. I will present the results of our survey’s of material held and available on-line and space “freed” thanks to archiving. How little space is freed
Changes in attitudes towards reading using the Accelerated Reader Program
The purpose of this experimental study was to determine if attitudes towards reading changed when the Accelerated Reader program was implemented. The study involved six classes of sixth and seventh graders in a six-week period and used a pretest/posttest design to measure changes in attitudes towards reading. A total of 128 students were given permission slips, however only 50 students returned them. These fifty participants completed a reading attitudes survey at the beginning and conclusion of the study. The participants also answered a worksheet with questions about the book that they chose to read. Finally, the students completed reading comprehension quizzes through the Accelerated Reader program. Data analysis was achieved through tallying survey results and comparing three categories: sex, grade level and if a student was at-risk. Totals and percentages were computed on tables and figures using Microsoft Excel. Accelerated Reader proved to be useful in student motivation in reading. Approximately two-thirds of the participants\u27 results affirmed the fact that the Accelerated Reader program was useful in fostering reading motivation
Tobacco Use Screening and Cessation Counseling in Primary Care
Abstract
BACKGROUND: Primary care providers (PCPs) are poised across healthcare settings to reduce the leading cause of preventable morbidity and mortality, cigarette smoking. However, their patients may not be screened for tobacco use and miss cessation counseling, thus increasing tobacco-related diseases, and incurring costs to healthcare payers.
PURPOSE: This project seeks to identify the documentation process in a new electronic health record (EHR), communicate efficacy barriers, administer an educational intervention regarding the new process for PCPs, and measure its impact on performance of tobacco use screening and cessation counseling.
METHODS: This project was a quasi-experimental, single center, pre- and post-interventional design quality improvement study conducted from June 2021 to March 2022. Five PCPs participated in the chart review, academic detailing intervention, and follow-up reporting. Fifty patient encounters were randomly selected for evaluation.
RESULTS: There was no statistically significant difference in tobacco use screening after the intervention.
DISCUSSION/CONCLUSION: This project determined the optimal documentation process in the new EHR and measured performance of tobacco use screening in an outreach clinic without previous benchmarks. These baseline data points are useful to trend future performance reporting and frame expectations for further documentation improvement
A MEASUREMENT OF HISTORICAL AND CONTEMPORARY FUNCTIONAL DIVERSITY ON THE MONAHAN RECLAIMED GRASSLAND
In 1984 a portion of the Monahan, a PSU Biology field site, was reclaimed to establish a native grassland community and to prevent runoff of acidic groundwater. In the years since then, several student projects have analyzed the vegetation community on the site, estimating the biodiversity found there. In this study, conducted in 2014, the biodiversity of the Monahan was measured using four indices of functional diversity. Functional diversity describes the variety of ecological functions in a community; functional diversity indices measure and describe these functions instead of individual species. Results from two past graduate theses were compared to the 2014 findings. This comparison showed that the Monahan reclaimed grassland had generally increased in functional diversity (and by extension biodiversity) over time, but the dominant facets of diversity have been variable in each sample. In the first samples taken after the reclamation (Vickers, 1989) the community became more functionally even and divergent; that is, the species found were evenly spread across the community’s functional groups. A sample taken in 1994 revealed that the grassland had become less functionally even and divergent but more functionally dispersed, or were more widely spread across the functional groups (Yates, 1996). The survey conducted for this thesis in 2014 revealed that the grassland is at the highest level of functional richness ever recorded, but is less functionally diverse than 1994 by all other indices. Overall, since the initial 1984 reclamation, the grassland has actually increased in all areas of functional diversity
Neutron Capture Cross Sections for the Weak s Process
In past decades a lot of progress has been made towards understanding the
main s-process component that takes place in thermally pulsing Asymptotic Giant
Branch (AGB) stars. During this process about half of the heavy elements,
mainly between 90<=A<=209 are synthesized. Improvements were made in stellar
modeling as well as in measuring relevant nuclear data for a better description
of the main s process. The weak s process, which contributes to the production
of lighter nuclei in the mass range 56<=A<=90 operates in massive stars
(M>=8Msolar) and is much less understood. A better characterization of the weak
s component would help disentangle the various contributions to element
production in this region. For this purpose, a series of measurements of
neutron-capture cross sections have been performed on medium-mass nuclei at the
3.7-MV Van de Graaff accelerator at FZK using the activation method. Also,
neutron captures on abundant light elements with A<56 play an important role
for s-process nucleosynthesis, since they act as neutron poisons and affect the
stellar neutron balance. New results are presented for the (n,g) cross sections
of 41K and 45Sc, and revisions are reported for a number of cross sections
based on improved spectroscopic information
Quasi-Periodic Oscillations in Short Recurring Bursts of the magnetars SGR 1806-20 and SGR 1900+14 Observed With RXTE
Quasi-periodic oscillations (QPOs) observed in the giant flares of magnetars
are of particular interest due to their potential to open up a window into the
neutron star interior via neutron star asteroseismology. However, only three
giant flares have been observed. We therefore make use of the much larger data
set of shorter, less energetic recurrent bursts. Here, we report on a search
for QPOs in a large data set of bursts from the two most burst-active
magnetars, SGR 1806-20 and SGR 1900+14, observed with the Rossi X-ray Timing
Explorer (RXTE). We find a single detection in an averaged periodogram
comprising 30 bursts from SGR 1806-20, with a frequency of 57 Hz and a width of
5 Hz, remarkably similar to a giant flare QPO observed from SGR 1900+14. This
QPO fits naturally within the framework of global magneto-elastic torsional
oscillations employed to explain the giant flare QPOs. Additionally, we uncover
a limit on the applicability of Fourier analysis for light curves with low
background count rates and strong variability on short timescales. In this
regime, standard Fourier methodology and more sophisticated Fourier analyses
fail in equal parts by yielding an unacceptably large number of false positive
detections. This problem is not straightforward to solve in the Fourier domain.
Instead, we show how simulations of light curves can offer a viable solution
for QPO searches in these light curves.Comment: accepted for publication in ApJ; 12 pages, 7 figures; code +
instructions at https://github.com/dhuppenkothen/MagnetarQPOSearchPaper ;
associated data products at
http://figshare.com/articles/SGR_1900_14_RXTE_Data/1184101 (SGR 1900+14) and
http://figshare.com/articles/SGR_1806_20_Bursts_RXTE_data_set/1184427 (SGR
1806-20
Adjustment of interaural-time-difference analysis to sound level
To localize low-frequency sound sources in azimuth, the binaural system compares the timing of sound waves at the two ears with microsecond precision. A similarly high precision is also seen in the binaural processing of the envelopes of high-frequency complex sounds. Both for low- and high-frequency sounds, interaural time difference (ITD) acuity is to a large extent independent of sound level. The mechanisms underlying this level-invariant extraction of ITDs by the binaural system are, however, only poorly understood. We use high-frequency pip trains with asymmetric and dichotic pip envelopes in a combined psychophysical, electrophysiological, and modeling approach. Although the dichotic envelopes cannot be physically matched in terms of ITD, the match produced perceptually by humans is very reliable, and it depends systematically on the overall sound level. These data are reflected in neural responses from the gerbil lateral superior olive and lateral lemniscus. The results are predicted in an existing temporal-integration model extended with a level-dependent threshold criterion. These data provide a very sensitive quantification of how the peripheral temporal code is conditioned for binaural analysis
A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A
Titanium-rich subluminous supernovae are rare and challenge current SN
nucleosynthesis models. We present a model in which ejecta from a standard
Supernova is impacted by a second explosion of the neutron star (a Quark-nova),
resulting in spallation reactions that lead to 56Ni destruction and 44Ti
creation under the right conditions. Basic calculations of the spallation
products shows that a delay between the two explosions of ~ 5 days reproduces
the observed abundance of 44Ti in Cas A and explains its low luminosity as a
result of the destruction of 56Ni. Our results could have important
implications for lightcurves of subluminous as well as superluminous
supernovae.Comment: Accepted/to be published in Physical Review Letters. [ for more info
on the Quark Nova, see: http://quarknova.ucalgary.ca/
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