2,299 research outputs found
Athletic training students in the college/ university setting and the scope of clinical education
Context: Athletic training education programs must provide the proper type and amount of clinical supervision in order for athletic training students to obtain appropriate clinical education and to meet Board of Certification examination requirements.
Objective: To assess athletic training students' perceptions of the type and amount of clinical supervision received during clinical education.
Design: Cross-sectional design.
Setting: 124 CAAHEP-accredited NCAA institutions.
Patients or other participants: We obtained a national stratified random sample (by National Athletic Trainers' Association district) of undergraduate athletic training students from 61 Commission on Accreditation of Allied Health Education Programs-accredited athletic training education programs. A total of 851 athletic training students participated in the study.
Main outcome measure(s): Differences among athletic training students with first-aider/provider qualifications, student supervision during moderate-risk and increased-risk sports, program/institutional characteristics, type and amount of clinical supervision, and students' academic level and mean percentage of time spent in different types of clinical supervision.
Results: A total of 276 (32.4%) of the students reported that they supplied medical care and athletic training-related coverage beyond that of a first aider/provider. Athletic training students stating that they traveled with teams without supervision numbered 342 (40.2%). A significant difference was noted between the amount of supervision reported by sophomore and senior students ( P < .01).
Conclusions: Athletic training students do not seem to be receiving appropriate clinical supervision and are often acting outside the scope of clinical education
Cardiovascular reactivity in a simulated job interview: the role of gender role self-concept
This study investigated the relation of gender role self-concept (G-SC) to cardiovascular
and emotional reactions to an ecologically relevant stressor in a sample of
graduating male and female university students. Thirty-seven men and 37 women
completed the Personal Attribute Questionnaire and worked on four tasks designed to
reflect common features of a job interview. Blood pressure and heart rate were measured
at baseline, during, and after each task; subjective stress was measured at baseline
and after each task. Subjective and objective stress scores were averaged across
tasks and analyzed by sex and G-SC (i.e., instrumentality, expressiveness). Results indicated
that women as a group demonstrated greater emotional reactivity, but did not
differ in their physiological reactions when compared to men. Regardless of sex, participants’
instrumentality scores contributed significantly to the variation in subjective
stress response: those scoring high on instrumentality reported less stress, but evidenced
greater blood pressure reactivity than those scoring low on instrumentality.
These results suggest that gender roles, particularly an instrumental self-concept,
may play an important role in both subjective and objective reactions to an ecologically
relevant stressor
Gauged N=4 supergravities
We present the gauged N=4 (half-maximal) supergravities in four and five
spacetime dimensions coupled to an arbitrary number of vector multiplets. The
gaugings are parameterized by a set of appropriately constrained constant
tensors, which transform covariantly under the global symmetry groups SL(2) x
SO(6,n) and SO(1,1) x SO(5,n), respectively. In terms of these tensors the
universal Lagrangian and the Killing Spinor equations are given. The known
gaugings, in particular those originating from flux compactifications, are
incorporated in the formulation, but also new classes of gaugings are found.
Finally, we present the embedding chain of the five dimensional into the four
dimensional into the three dimensional gaugings, thereby showing how the
deformation parameters organize under the respectively larger duality groups.Comment: 36 pages, v2: references added, comments added, v3: published
version, references added, typos corrected, v4: sign mistakes in footnote 4
and equation (2.13) correcte
A Novel Approach to Register Multi-Platform Point Clouds for Rockfall Monitoring
Point cloud produced from technologies such as terrestrial laser scanning (TLS) and photogrammetry (terrestrial and aerial) are widely used in rockfall monitoring applications due to the wealth of data they provide. In such applications, the acquisition and registration of multi-epoch point clouds is necessary. In addition, point clouds can be derived from different sensors (e.g., lasers versus digital cameras) and different platforms (terrestrial versus aerial). Therefore, registration methods should be able to support multi-platform datasets. Currently, registration of multi-platform datasets is done with manual intervention, and automatic registration is difficult. While registration of TLS point clouds can be achieved by targets that are not on the rock surface, this is not the case for photogrammetric methods, as ground control points (GCPs) should be located on the rock surface. Such GCPs can be lost or destroyed with time, and re-establishing them is difficult. Automated registration often relies on feature-based algorithms with refinement using the iterative closest point (ICP) algorithm. This paper presents a novel registration approach of multi-epoch and multi-platform point clouds to support rockfall monitoring applications. The registration method is based on edges that are detected in the different datasets using α-molecules. The paper shows application examples of the novel approach at different rock slopes in Colorado. Results demonstrate that the developed method in many cases performs better than the well-known ICP method and can be used to register point clouds and support rockfall monitoring
Rotational Velocities For B0-B3 Stars in 7 Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions
We present the results of a study aimed at assessing the differences in the
dis- tribution of rotation speeds, N (v sin i) among young (1-15 Myr) B stars
spanning a range of masses 6 < M/M < 12 and located in different environments:
7 low density (rho < 1 M /pc^3) ensembles that are destined to become unbound
stellar associations, and 8 high density (rho >> 1 M /pc^3) ensembles that will
survive as rich, bound stellar clusters for ages well in excess of 10^8 years.
Our results demonstrate (1) that independent of environment, the rotation rates
for stars in this mass range do not change by more than 0.1 dex over ages t ~ 1
to t ~ 15 Myr; and (2) that stars formed in high density regions lack the
cohort of slow rotators that dominate the low density regions and young field
stars. We suggest that the differences in N(v sin i) between low and high
density regions may reflect a combination of initial conditions and
environmental effects: (1) the higher turbulent speeds that characterize
molecular gas in high density, cluster- forming regions; and (2) the stronger
UV radiation fields and high stellar densities that characterize such regions
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