2,325 research outputs found
Reflections on Developing a Campus-Wide Workshop Series on Contemplative Practice and Social Justice
Contemplative practices have been increasingly used in higher education to enhance student well-being and academic success. More recently, educators, activists, and researchers are exploring how contemplative practices and perspectives may support promotion of social justice on and outside college campuses. In this reflection, we share the development, execution, and evaluation of a campus-wide workshop series held at San Francisco State University (SFSU). The series promoted reflection and discussion on the relationship between contemplative practice and social justice to improve campus climate, enhance well-being of campus members, and promote student success
Ghost Images in Helioseismic Holography? Toy Models in a Uniform Medium
Helioseismic holography is a powerful technique used to probe the solar
interior based on estimations of the 3D wavefield. Porter--Bojarski holography,
which is a well-established method used in acoustics to recover sources and
scatterers in 3D, is also an estimation of the wavefield, and hence it has the
potential to be applied to helioseismology. Here we present a proof of concept
study, where we compare helioseismic holography and Porter--Bojarski holography
under the assumption that the waves propagate in a homogeneous medium. We
consider the problem of locating a point source of wave excitation inside a
sphere. Under these assumptions, we find that the two imaging methods have the
same capability of locating the source, with the exception that helioseismic
holography suffers from "ghost images" (i.e., artificial peaks away from the
source location). We conclude that Porter--Bojarski holography may improve the
current method used in helioseismology.Comment: 17 pages, 8 figure
Fostering Interdisciplinary Boundary Spanning in Health Communication: A Call for a Paradigm Shift
Scholarship in the field of health communication is broad, with interdisciplinary contributions from researchers trained in a variety of fields including communication, nursing, medicine, pharmacy, public health, and social work. In this paper, we explore the role of “health communication boundary spanners” (HCBS), individuals whose scholarly work and academic appointment reflect dual citizenship in both the communication discipline and the health professions or public health. Using a process of critical reflective inquiry, we elucidate opportunities and challenges associated with HCBS across the spectrum of health communication in order to provide guidance for individuals pursuing boundary spanning roles and those who supervise and mentor them. This dual citizen role suggests that HCBS have unique skills, identities, perspectives, and practices that contribute new ways of being and knowing that transcend traditional disciplinary boundaries. The health communication field is evolving in response to the need to address significant healthcare and policy problems. No one discipline has the ability to single-handedly fix our current healthcare systems. Narrative data from this study illustrate the importance of seeing HCBS work beyond simply being informed by disciplinary knowledge. Rather, we suggest that adapting ways of knowing and definitions of expertise is an integral part of the solution to solving persistent health problems
Bodyweight Perceptions among Texas Women: The Effects of Religion, Race/Ethnicity, and Citizenship Status
Despite previous work exploring linkages between religious participation and health, little research has looked at the role of religion in affecting bodyweight perceptions. Using the theoretical model developed by Levin et al. (Sociol Q 36(1):157–173, 1995) on the multidimensionality of religious participation, we develop several hypotheses and test them by using data from the 2004 Survey of Texas Adults. We estimate multinomial logistic regression models to determine the relative risk of women perceiving themselves as overweight. Results indicate that religious attendance lowers risk of women perceiving themselves as very overweight. Citizenship status was an important factor for Latinas, with noncitizens being less likely to see themselves as overweight. We also test interaction effects between religion and race. Religious attendance and prayer have a moderating effect among Latina non-citizens so that among these women, attendance and prayer intensify perceptions of feeling less overweight when compared to their white counterparts. Among African American women, the effect of increased church attendance leads to perceptions of being overweight. Prayer is also a correlate of overweight perceptions but only among African American women. We close with a discussion that highlights key implications from our findings, note study limitations, and several promising avenues for future research
Model experiment of magnetic field amplification in laser-produced plasmas via the Richtmyer-Meshkov instability
A model experiment of magnetic field amplification (MFA) via the Richtmyer-Meshkov instability (RMI) in supernova remnants (SNRs) was performed using a high-power laser. In order to account for very-fast acceleration of cosmic rays observed in SNRs, it is considered that the magnetic field has to be amplified by orders of magnitude from its background level. A possible mechanism for the MFA in SNRs is stretching and mixing of the magnetic field via the RMI when shock waves pass through dense molecular clouds in interstellar media. In order to model the astrophysical phenomenon in laboratories, there are three necessary factors for the RMI to be operative: a shock wave, an external magnetic field, and density inhomogeneity. By irradiating a double-foil target with several laser beams with focal spot displacement under influence of an external magnetic field, shock waves were excited and passed through the density inhomogeneity. Radiative hydrodynamic simulations show that the RMI evolves as the density inhomogeneity is shocked, resulting in higher MFA
The Balloon-Borne Large Aperture Submillimeter Telescope (BLAST) 2005: A 10 deg^2 Survey of Star Formation in Cygnus X
We present Cygnus X in a new multi-wavelength perspective based on an
unbiased BLAST survey at 250, 350, and 500 micron, combined with rich datasets
for this well-studied region. Our primary goal is to investigate the early
stages of high mass star formation. We have detected 184 compact sources in
various stages of evolution across all three BLAST bands. From their
well-constrained spectral energy distributions, we obtain the physical
properties mass, surface density, bolometric luminosity, and dust temperature.
Some of the bright sources reaching 40 K contain well-known compact H II
regions. We relate these to other sources at earlier stages of evolution via
the energetics as deduced from their position in the luminosity-mass (L-M)
diagram. The BLAST spectral coverage, near the peak of the spectral energy
distribution of the dust, reveals fainter sources too cool (~ 10 K) to be seen
by earlier shorter-wavelength surveys like IRAS. We detect thermal emission
from infrared dark clouds and investigate the phenomenon of cold ``starless
cores" more generally. Spitzer images of these cold sources often show stellar
nurseries, but these potential sites for massive star formation are ``starless"
in the sense that to date there is no massive protostar in a vigorous accretion
phase. We discuss evolution in the context of the L-M diagram. Theory raises
some interesting possibilities: some cold massive compact sources might never
form a cluster containing massive stars; and clusters with massive stars might
not have an identifiable compact cold massive precursor.Comment: 42 pages, 31 Figures, 6 table
Cognitive Effects of Risperidone in Children with Autism and Irritable Behavior
Objective:
The objective of this research was to explore the effects of risperidone on cognitive processes in
children with autism and irritable behavior.
Method:
Thirty-eight children, ages 5-17 years with autism and severe behavioral disturbance, were
randomly assigned to risperidone (0.5 to 3.5 mg/day) or placebo for 8 weeks. This sample of 38 was a subset
of 101 subjects who participated in the clinical trial; 63 were unable to perform the cognitive tasks. A
double-blind placebo-controlled parallel groups design was used. Dependent measures included tests of
sustained attention, verbal learning, hand-eye coordination, and spatial memory assessed before, during, and
after the 8-week treatment. Changes in performance were compared by repeated measures ANOVA.
Results:
Twenty-nine boys and 9 girls with autism and severe behavioral disturbance and a mental age ≥18
months completed the cognitive part of the study. No decline in performance occurred with risperidone.
Performance on a cancellation task (number of correct detections) and a verbal learning task (word
recognition) was better on risperidone than on placebo (without correction for multiplicity). Equivocal
improvement also occurred on a spatial memory task. There were no significant differences between
treatment conditions on the Purdue Pegboard (hand-eye coordination) task or the Analog Classroom Task
(timed math test).
Conclusion:
Risperidone given to children with autism at doses up to 3.5 mg for up to 8 weeks appears to have no
detrimental effect on cognitive performance
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