Student Perceptions and Grade Comparisons after Exposure to Instructor-Made Skills Videos in a Kinesiology Course

The purpose of this mixed method, descriptive case study was to determine whether the use of pre-recorded instructor-made videos (PRIMVs) in a kinesiology course, along with curricular design changes, facilitated increased conceptual and practical student learning. The study examined three student cohorts in one occupational therapy program. Two of the student cohorts had unrestricted access to the PRIMVs designed to support student learning of bone and muscle palpation and joint actions. Students from the two cohorts completed a survey about their experience of having access to the videos. Exam data from the student cohorts who had access to the videos was compared to exam data from an earlier cohort who had not been exposed to the videos. While no significant differences in the lab exam grades were noted, quantitative and qualitative data collected from the surveys revealed that students perceived that their overall course grade was higher and they were better prepared for clinical fieldwork as a result of having access to the videos. This study adds to the growing body of evidence that supports video technology as a supplemental learning tool in occupational therapy education

Benefits of Peer-Mentorship for Entry-Level Occupational Therapy Students: A Descriptive Study

Background: This study explored the benefits of a new peer-mentorship program designed for Master\u27s-level occupational therapy students. Method: This was a descriptive study of an entry-level Master’s of occupational therapy (MOT) program. A group of entry-level MOT students participated in the program as mentees (n = 37 in summer 2019, n = 39 in fall 2019) and mentors (n = 9 in summer 2019, n = 8 in fall 2019) for two academic semesters. Feedback about the process and outcomes of the peer-mentorship program was collected at the end of each semester. Results: The data showed that mentees reported the mentorship program helped them (a) acclimate to the occupational therapy program (89.19% in summer, 94.87% in fall), (b) promote their success in their occupational therapy program (89.19% in summer; 92.31% in fall), (c) help build self-confidence (72.98% in summer, 82.05% in fall), (d) improve communication skills (64.86% in summer, 69.24% in fall), and (e) reduce stress levels (78.38% in summer, 89.75% in fall). All mentors reported enhanced self-confidence and communication skills and enjoyed being part of the mentorship program. Conclusion: The peer-mentorship program is a cost-effective and helpful tool for entry-level occupational therapy students. The program can help students be successful in their occupational therapy studies, navigate campus resources, reduce stress, build self-confidence, and improve their communication skills. With students’ current mental health and academic challenges, such a program can benefit students’ success and well-being. The program can be a resource for occupational therapy programs in building an alumni base and future fieldwork supervisors

Clustering of solutions in the random satisfiability problem

Using elementary rigorous methods we prove the existence of a clustered phase in the random $K$-SAT problem, for $K\geq 8$. In this phase the solutions are grouped into clusters which are far away from each other. The results are in agreement with previous predictions of the cavity method and give a rigorous confirmation to one of its main building blocks. It can be generalized to other systems of both physical and computational interest.Comment: 4 pages, 1 figur

Improving patient reported outcomes in total hip replacement: What can we learn from the "best" and the "poorest" performing sites?

Introduction: Oxford Hip Scores (OHS) and Oxford Knee Scores (OKS) are being collected as part of the Patient Reported Outcome Measures (PROMs) evaluation programme on total hip and knee replacement. This study compares the PROMs outcomes from best and poorest performing English hospitals, as defined by NHS England’s data of elective hip and knee surgery. This was to quantify the difference and identify the scope for improvement. Materials and Methods: OHS and OKS were obtained from the Health and Social Care Information Centre for April 2013 to March 2014. Results: Seven sites for OHS and 10 sites for OKS were above the upper 95% control limit. Fourteen sites for OHS and 10 sites for OKS were below the lower 95% control limit. Median pre-operative scores were similar between best and poorest performers. Median post-operative scores were 4 points higher in best performers. Top OHS-performers scored better in limping, stairs, work, transport, dressing and shopping. Top OKS-performers scored better in walking, shopping and kneeling. Discussion: Pre-operative scores were similar for the best and poorest performers. The differences between best and poorest performing hospitals for OHS and OKS were below the minimum important difference. There was only moderate consistency for outliers. Results for any single year should be treated with caution. Conclusions: PROMs, one of many key tools in measuring and increasing person-centered healthcare, can be useful as part of an evaluation of practice but do not always reveal the full picture. It is important that balanced measures of quality should be used when benchmarking hospitals

Optical and ultraviolet observations of nova Vul 1987

The outburst for a nova discovered in Nov. 1987 and followed since then is summarized. Although it was possible to observe it with the IUE at maximum, its ultraviolet energy faded rapidly, and after the first 2 weeks it was impossible to observe it at IUE wavelengths. It is observed to form a thick dust shell and is in the nebular stage

The Milky Way's Kiloparsec Scale Wind: A Hybrid Cosmic-Ray and Thermally Driven Outflow

We apply a wind model, driven by combined cosmic-ray and thermal-gas pressure, to the Milky Way, and show that the observed Galactic diffuse soft X-ray emission can be better explained by a wind than by previous static gas models. We find that cosmic-ray pressure is essential to driving the observed wind. Having thus defined a "best-fit" model for a Galactic wind, we explore variations in the base parameters and show how the wind's properties vary with changes in gas pressure, cosmic-ray pressure and density. We demonstrate the importance of cosmic rays in launching winds, and the effect cosmic rays have on wind dynamics. In addition, this model adds support to the hypothesis of Breitschwerdt and collaborators that such a wind may help explain the relatively small gradient observed in gamma-ray emission as a function of galactocentric radius.Comment: 14 pages, 11 figures; Accepted to Ap

UV-Optical Pixel Maps of Face-On Spiral Galaxies -- Clues for Dynamics and Star Formation Histories

UV and optical images of the face-on spiral galaxies NGC 6753 and NGC 6782 reveal regions of strong on-going star formation that are associated with structures traced by the old stellar populations. We make NUV--(NUV-I) pixel color-magnitude diagrams (pCMDs) that reveal plumes of pixels with strongly varying NUV surface brightness and nearly constant I surface brightness. The plumes correspond to sharply bounded radial ranges, with (NUV-I) at a given NUV surface brightness being bluer at larger radii. The plumes are parallel to the reddening vector and simple model mixtures of young and old populations, thus neither reddening nor the fraction of the young population can produce the observed separation between the plumes. The images, radial surface-brightness, and color plots indicate that the separate plumes are caused by sharp declines in the surface densities of the old populations at radii corresponding to disk resonances. The maximum surface brightness of the NUV light remains nearly constant with radius, while the maximum I surface brightness declines sharply with radius. An MUV image of NGC 6782 shows emission from the nuclear ring. The distribution of points in an (MUV-NUV) vs. (NUV-I) pixel color-color diagram is broadly consistent with the simple mixture model, but shows a residual trend that the bluest pixels in (MUV-NUV) are the reddest pixels in (NUV-I). This may be due to a combination of red continuum from late-type supergiants and [SIII] emission lines associated with HII regions in active star-forming regions. We have shown that pixel mapping is a powerful tool for studying the distribution and strength of on-going star formation in galaxies. Deep, multi-color imaging can extend this to studies of extinction, and the ages and metallicities of composite stellar populations in nearby galaxies.Comment: LaTeX with AASTeX style file, 29 pages with 12 figures (some color, some multi-part). Accepted for publication in The Astrophysical Journa

Pasts and pagan practices: moving beyond Stonehenge

Theorizing the past is not restricted to archaeology and interpretations of 'past' both influence and are themselves constituted within politicized understandings of self, community and in certain instances, spirituality. 'The past in the imagination of the present' is appropriated, variously, to give meaning to the present or to justify actions and interpret experiences. Summer solstice at Stonehenge, with an estimated 21,000 celebrants in 2005, is only the most publicized appropriation (by pagans and other adherents of alternative spirituality and partying) of a 'sacred site'; and conflicts and negotiations occurring throughout Britain are represented in popular and academic presentations of this 'icon of Britishness'. This paper presents work from the Sacred Sites, Contested Rites/Rights Project (http://www.sacredsites.org.uk) project, a collaboration of archaeology and anthropology informed by pagan and alternative approaches and standpoints investigating and theorizing discourse and practice of heritage management and pagan site users. Whether in negotiations around the Stonehenge solstice access or in dealing with numerous other sites, boundaries between groups or discourses are not clearly drawn - discursive communities merge and re-emerge. But clearly 'past' and 'site' are increasingly important within today's Britain, even as television archaeology increases its following, and pagan numbers continue to grow.</p

Long-Term Evolution and Revival Structure of Rydberg Wave Packets for Hydrogen and Alkali-Metal Atoms

This paper begins with an examination of the revival structure and long-term evolution of Rydberg wave packets for hydrogen. We show that after the initial cycle of collapse and fractional/full revivals, which occurs on the time scale $t_{\rm rev}$, a new sequence of revivals begins. We find that the structure of the new revivals is different from that of the fractional revivals. The new revivals are characterized by periodicities in the motion of the wave packet with periods that are fractions of the revival time scale $t_{\rm rev}$. These long-term periodicities result in the autocorrelation function at times greater than $t_{\rm rev}$ having a self-similar resemblance to its structure for times less than $t_{\rm rev}$. The new sequence of revivals culminates with the formation of a single wave packet that more closely resembles the initial wave packet than does the full revival at time $t_{\rm rev}$, i.e., a superrevival forms. Explicit examples of the superrevival structure for both circular and radial wave packets are given. We then study wave packets in alkali-metal atoms, which are typically used in experiments. The behavior of these packets is affected by the presence of quantum defects that modify the hydrogenic revival time scales and periodicities. Their behavior can be treated analytically using supersymmetry-based quantum-defect theory. We illustrate our results for alkali-metal atoms with explicit examples of the revival structure for radial wave packets in rubidium.Comment: To appear in Physical Review A, vol. 51, June 199

Family Life Course Statuses and Transitions: Relationships with Health Limitations

In this study, the author uses 25 years of data taken from the 1979 National Longitudinal Study of Youth to examine the relationship between family life course statuses and transitions and work-related health limitations. The author uses a detailed set of statuses and transitions that include marriage, divorce, cohabitation, and parenthood. The measures of health used tap health limitations in the kind and amount of work that can be performed. Using a fixed-effects estimator for dichotomous outcomes, the author finds that marriage is positively related to the health of men but negatively related to the health of women. The author also finds that parenthood is not related to the health of men but is positively related to the health of women. The results also indicate that statuses are more important for determining health limitations than are transitions