6,484 research outputs found
Exploring the Feasibility of Incorporating Sexual Education into Routine Adolescent Office Visits
Preventative sexual education can reduce the negative health outcomes of sexual behavior in adolescent populations.1 The objective of this pilot study was to determine if sexual education can be delivered as a scripted five-minute module during a routine adolescent office visit in a manner that is non-disruptive of clinic flow and acceptable to both patients and providers.
• 85% of providers reported the intervention did not interrupt clinic flow
• 86% of patients reported the intervention to be appropriate and 92% of providers were satisfied overall with the intervention
These pilot data highlight that the incorporation of brief scripted sexual education into routine adolescent preventative office visits is both feasible and acceptable to patients and providers.https://jdc.jefferson.edu/cwicposters/1024/thumbnail.jp
A study of rhetorical strategies in the rise of Seventh-day Adventism
Dissertation (Ph.D.)--University of Kansas, Speech and Drama, 1972
Revised Pulsar Spindown
We address the issue of electromagnetic pulsar spindown by combining our
experience from the two limiting idealized cases which have been studied in
great extent in the past: that of an aligned rotator where ideal MHD conditions
apply, and that of a misaligned rotator in vacuum. We construct a spindown
formula that takes into account the misalignment of the magnetic and rotation
axes, and the magnetospheric particle acceleration gaps. We show that near the
death line aligned rotators spin down much slower than orthogonal ones. In
order to test this approach, we use a simple Monte Carlo method to simulate the
evolution of pulsars and find a good fit to the observed pulsar distribution in
the P-Pdot diagram without invoking magnetic field decay. Our model may also
account for individual pulsars spinning down with braking index n < 3, by
allowing the corotating part of the magnetosphere to end inside the light
cylinder. We discuss the role of magnetic reconnection in determining the
pulsar braking index. We show, however, that n ~ 3 remains a good approximation
for the pulsar population as a whole. Moreover, we predict that pulsars near
the death line have braking index values n > 3, and that the older pulsar
population has preferentially smaller magnetic inclination angles. We discuss
possible signatures of such alignment in the existing pulsar data.Comment: 8 pages, 7 figures; accepted to Ap
Monitoring coastal dolphins within the Reef 2050 Integrated Monitoring and Reporting Program: final report of the dolphins team in the megafauna expert group
Three species of coastal dolphins are commonly found throughout the Great Barrier Reef (the Reef), the Australian snubfin dolphin, Orcaella heinsohni, the Australian humpback dolphin, Sousa sahulensis, and the Indo-Pacific bottlenose dolphin, Tursiops aduncus. This report focuses on these three species, acknowledging that many other cetacean species also inhabit the Reef. This report is a desktop study that includes current status of the relevant elements of the Reef, priority indicators for monitoring, potential sources of data, assessment of the adequacy of existing monitoring activities and recommendations for the design of an integrated monitoring program as a component of RIMReP
Drawing on the right side of the brain: a voxel-based morphometry analysis of observational drawing
Structural brain differences in relation to expertise have been demonstrated in a number of domains including visual perception, spatial navigation, complex motor skills and musical ability. However no studies have assessed the structural differences associated with representational skills in visual art. As training artists are inclined to be a heterogeneous group in terms of their subject matter and chosen media, it was of interest to investigate whether there would be any consistent changes in neural structure in response to increasing representational drawing skill. In the current study a cohort of 44 graduate and post-graduate art students and non-art students completed drawing tasks. Scores on these tasks were then correlated with the regional grey and white matter volume in cortical and subcortical structures. An increase in grey matter density in the left anterior cerebellum and the right medial frontal gyrus was observed in relation to observational drawing ability, whereas artistic training (art students vs. non-art students) was correlated with increased grey matter density in the right precuneus. This suggests that observational drawing ability relates to changes in structures pertaining to fine motor control and procedural memory, and that artistic training in addition is associated with enhancement of structures pertaining to visual imagery. The findings corroborate the findings of small-scale fMRI studies and provide insights into the properties of the developing artistic brain
Inclusive Practice: researching the relationships between dyslexia, personality, and art students’ drawing ability.
This paper addresses the conference theme of inclusivity
from two standpoints. Firstly, involving collaboration
between researchers from fields including psychology,
educational study support and studio drawing practice,
which has revealed insights into students’ learning
difficulties in drawing, which are not easily accessible
through mono-disciplinary research practice. Secondly it
involves a proposal outlining a strategy for the teaching
of drawing which attempts to include students of varying
abilities in drawing, and to empower their practice
equally. The paper demonstrates the effectiveness of
an inclusive, cross-disciplinary approach to exploring
the relations between personality factors, perceptual
problems, visual memory and drawing skills in art
students who report difficulties producing accurate drawn
representations of their observational experiences. Results
indicate that whilst in general drawing ability seems not
to relate to dyslexia, higher drawing ability does appear
related to the personality measure of conscientiousness,
and also both to sex (in the biological sense, males
drawing better than females) and to gender (those who
perceive themselves as more masculine drawing better,
whether they are male or female). Poor drawers are less
good at accurately copying angles and proportions, and
their visual memory is less good. These findings inform a
proposed inclusive group teaching strategy for drawing
which attempts to address these weaknesses without hindering the progress of the more able student
The injury mechanism of traumatic amputation
Traumatic amputation has been one of the most defining injuries associated with explosive devices. An understanding of the mechanism of injury is essential in order to reduce its incidence and devastating consequences to the individual and their support network. In this study, traumatic amputation is reproduced using high-velocity environmental debris in an animal cadaveric model. The study findings are combined with previous work to describe fully the mechanism of injury as follows. The shock wave impacts with the casualty, followed by energised projectiles (environmental debris or fragmentation) carried by the blast. These cause skin and soft tissue injury, followed by skeletal trauma which compounds to produce segmental and multifragmental fractures. A critical injury point is reached, whereby the underlying integrity of both skeletal and soft tissues of the limb has been compromised. The blast wind that follows these energised projectiles completes the amputation at the level of the disruption, and traumatic amputation occurs. These findings produce a shift in the understanding of traumatic amputation due to blast from a mechanism predominately thought mediated by primary and tertiary blast, to now include secondary blast mechanisms, and inform change for mitigative strategies
Coherently Dedispersed Polarimetry of Millisecond Pulsars
We present a large sample of high-precision, coherently-dedispersed
polarization profiles of millisecond pulsars (MSPs) at frequencies between 410
and 1414 MHz. These data include the first polarimetric observations of several
of the pulsars, and the first low-frequency polarization profiles for others.
Our observations support previous suggestions that the pulse shapes and
polarimetry of MSPs are more complex than those of their slower relatives. An
immediate conclusion is that polarimetry-based classification schemes proposed
for young pulsars are of only limited use when applied to millisecond pulsars.Comment: 28 pages, 10 figures. Text matches version that appeared in ApJS.
Full paper with high-resolution figures available at
ftp://ftp.jb.man.ac.uk/pub/psr/papers/msppolpton.ps.g
Drifting subpulses and inner acceleration regions in radio pulsars
The classical vacuum gap model of Ruderman & Sutherland, in which
spark-associated subbeams of subpulse emission circulate around the magnetic
axis due to the EB drift, provides a natural and plausible physical mechanism
of the subpulse drift phenomenon. Recent progress in the analysis of drifting
subpulses in pulsars has provided a strong support to this model by revealing a
number of subbeams circulating around the magnetic axis in a manner compatible
with theoretical predictions. However, a more detailed analysis revealed that
the circulation speed in a pure vacuum gap is too high when compared with
observations. Moreover, some pulsars demonstrate significant time variations of
the drift rate, including a change of the apparent drift direction, which is
obviously inconsistent with the EB drift scenario in a pure vacuum gap. We
resolved these discrepancies by considering a partial flow of iron ions from
the positively charged polar cap, coexisting with the production of outflowing
electron-positron plasmas. By fitting the observationally deduced drift-rates
to the theoretical values, we managed to estimate polar cap surface
temperatures in a number of pulsars. The estimated surface temperatures
correspond to a small charge depletion of the order of a few percent of the
corotational charge density. We also argue that if the thermionic electron
outflow from the surface of a negatively charged polar cap is slightly below
the Goldreich-Julian density, then the resulting small charge depletion will
have similar consequences as in the case of the ions outflow. We thus believe
that the sparking discharge of a partially shielded acceleration potential drop
occurs in all pulsars, with both positively (``pulsars'') and negatively
(``anti-pulsars'') charged polar caps
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