Quantum Films Adsorbed on Graphite: Third and Fourth Helium Layers

Using a path-integral Monte Carlo method for simulating superfluid quantum films, we investigate helium layers adsorbed on a substrate consisting of graphite plus two solid helium layers. Our results for the promotion densities and the dependence of the superfluid density on coverage are in agreement with experiment. We can also explain certain features of the measured heat capacity as a function of temperature and coverage.Comment: 13 pages in the Phys. Rev. two-column format, 16 Figure

Supersymmetric Baryogenesis from Exotic Quark Decays

In a simple extension of the minimal supersymmetric standard model, out-of-equilibrium decays of TeV scale exotic vector-like squarks may generate the baryon asymmetry of the universe. Baryon number and CP violation are present in the superpotential, so this mechanism does not rely on CP violation in supersymmetry breaking parameters. We discuss phenomenological constraints on the model as well as potential signals for the Large Hadron Collider and electronic dipole moment experiments. A variation on the TeV scale model allows the exotic squarks to be the messengers of gauge mediated supersymmetry breaking.Comment: 28 pages, 7 figures, 2 appendices, v2: typos corrected, results unchange

On the validity of mean-field amplitude equations for counterpropagating wavetrains

We rigorously establish the validity of the equations describing the evolution of one-dimensional long wavelength modulations of counterpropagating wavetrains for a hyperbolic model equation, namely the sine-Gordon equation. We consider both periodic amplitude functions and localized wavepackets. For the localized case, the wavetrains are completely decoupled at leading order, while in the periodic case the amplitude equations take the form of mean-field (nonlocal) Schr\"odinger equations rather than locally coupled partial differential equations. The origin of this weakened coupling is traced to a hidden translation symmetry in the linear problem, which is related to the existence of a characteristic frame traveling at the group velocity of each wavetrain. It is proved that solutions to the amplitude equations dominate the dynamics of the governing equations on asymptotically long time scales. While the details of the discussion are restricted to the class of model equations having a leading cubic nonlinearity, the results strongly indicate that mean-field evolution equations are generic for bimodal disturbances in dispersive systems with \O(1) group velocity.Comment: 16 pages, uuencoded, tar-compressed Postscript fil

Reexamining Student-Athlete GPA: Traditional vs. Athletic Variables

A sample of 674 first-year student-athletes at a midsize Midwestern university were examined each year over a five-year period (2004–2008) to determine if athletic variables were powerful enough to be used in conjunction with traditional predictors of college success to predict GPA. The four specific athletic variables unique to student-athletes (i.e., sport, coaching change, playing time, team winning percentage), were hypothesized to be as predictive as traditional variables. Pearson correlations revealed student-athletes were more likely to earn a high first-year GPA if they were female (r = .35), Caucasian (r = -.33), scored well on standardized tests (r = -.47), had a respectable high school GPA (r = .64), were ranked high in their graduating high school class (r = -.58), had a relatively large high school graduating class (r = .15) were not undecided about major (r = -.11), were not a member of a revenue sport (r = .33), and earned a considerable amount of playing time in their first year (r = -.15). Least squares linear regression demonstrated the traditional variables of gender (B = .16), race (B = -.26), standardized test scores (B = .03), high school GPA (B = .41), high school rank (B < -.01), and size of high school graduating class (B < .01) were most influential in predicting first-year student-athlete GPA

D. L. Pierce, Leo Quinnelly, and O. E. Pulliam to Secretary General, 28 September 1962

Telegram supporting Barnett; discusses state sovereignty. The telegram was forwarded.https://egrove.olemiss.edu/west_union_tel/1059/thumbnail.jp

Development of a post-fall multidisciplinary checklist to evaluate the in-patient fall

Background: Falls suffered by hospitalized patients are an important reportable event. Approximately 4 - 6 % of inpatient falls result in serious injury. Recurrent falls or delayed recognition of injury can harm patients and represents a medico-legal risk. In 2010, our tertiary-care academic medical center reviewed current practice regarding falls prevention and assessment to develop a comprehensive falls prevention program. The committee found that there was no consistent practice in the assessment by nurses or physicians of inpatients who had fallen, either for injury or for conditions which might have led to the fall. A new systematic checklist for evaluation of the hospital faller was developed by a team consisting of nursing, hospitalists, and a medical unit director. Purpose: To develop an evidence-based multi-disciplinary checklist to facilitate evaluation, implementation of secondary prevention interventions and documentation following a hospital fall. Description: The hospitalist and the general medical unit director reviewed relevant literature, consulted national experts, and drafted a multidisciplinary checklist, the UNMH Post-Fall/Huddle Tool, to be used by nurses and physicians in post-fall patient evaluation. The checklist was reviewed and revised with further input from key stakeholders including hospitalists, housestaff, and the adult Medical/Surgical Shared Governance Committee. It was implemented as part of a comprehensive falls prevention program 3 month pilot. The checklist prompts a three step process: (1) an initial 7-item assessment by nursing staff to determine factors which would necessitate immediate evaluation by cross-covering physicians versus deferring evaluation to the primary team; (2) a 5-item focused physical examination to be performed by a physician to assess the likelihood of injury and suggested diagnostic tests based on this examination; and (3) an interdisciplinary face-to-face meeting between the evaluating physician and nurse to review 7 specific possible precipitating events and implement potential interventions. The UNMH Post-Fall/Huddle Tool will be adapted into the electronic health record after pilot completion and evaluation. An educational presentation about falls and how to use the checklist was developed for residents and hospitalists. Use of the checklist was implemented in November, 2010. To date, nurses and residents report that the checklist is easy to use and that it facilitates a timely, multidisciplinary evaluation of patients who have fallen in the hospital. Conclusion: A multi-disciplinary post-fall checklist facilitates a consistent and evidence-based evaluation and treatment of patients who have fallen in the hospital

Impact of multiscale dynamical processes and mixing on the chemical composition of the upper troposphere and lower stratosphere during the Intercontinental Chemical Transport Experiment–North America

We use high-frequency in situ observations made from the DC8 to examine fine-scale tracer structure and correlations observed in the upper troposphere and lower stratosphere during INTEX-NA. Two flights of the NASA DC-8 are compared and contrasted. Chemical data from the DC-8 flight on 18 July show evidence for interleaving and mixing of polluted and stratospheric air masses in the vicinity of the subtropical jet in the upper troposphere, while on 2 August the DC-8 flew through a polluted upper troposphere and a lowermost stratosphere that showed evidence of an intrusion of polluted air. We compare data from both flights with RAQMS 3-D global meteorological and chemical model fields to establish dynamical context and to diagnose processes regulating the degree of mixing on each day. We also use trajectory mapping of the model fields to show that filamentary structure due to upstream strain deformation contributes to tracer variability observed in the upper troposphere. An Eulerian measure of strain versus rotation in the large-scale flow is found useful in predicting filamentary structure in the vicinity of the jet. Higher-frequency (6–24 km) tracer variability is attributed to buoyancy wave oscillations in the vicinity of the jet, whose turbulent dissipation leads to efficient mixing across tracer gradients

Anisakis infection in allis shad, Alosa alosa (Linnaeus, 1758), and twaite shad, Alosa fallax (Lacépède, 1803), from Western Iberian Peninsula Rivers : zoonotic and ecological implications

Acknowledgments The authors would like to thank M. N. Cueto and J.M. Antonio (ECOBIOMAR) for their excellent technical support and also Rodrigo López for making the map of the study area. We also thank the personal of the Vigo IEO, for providing information about shad captures at sea collected on the basis of national program (AMDES) included in the European Data Collection Framework (DCF) project. We are also grateful to Comandancia Naval de Tui for providing fishing data. M. Bao is supported by a PhD grant from the University of Aberdeen and also by financial support of the contract from the EU Project PARASITE (grant number 312068). This study was partially supported by a PhD grant from the Portuguese Foundation for Science and Technology (FCT) SFRH/BD/44892/2008) and partially supported by the European Regional Development Fund (ERDF) through the COMPETE—Operational Competitiveness Programme and national funds through Foundation for Science and Technology (FCT), under the project BPEst-C/MAR/ LA0015/2013. The authors thank the staff of the Station of Hydrobiology of the USC BEncoro do Con^ due their participation in the surveys. This work has been partially supported by the project 10PXIB2111059PR of the Xunta de Galicia and the project MIGRANET of the Interreg IV BSUDOE (South-West Europe) Territorial Cooperation Programme (SOE2/P2/E288). D.J. Nachón is supported by a PhD grant from the Xunta de Galicia (PRE/2011/198)Peer reviewedPostprin

The theory of the exponential differential equations of semiabelian varieties

The complete first order theories of the exponential differential equations of semiabelian varieties are given. It is shown that these theories also arises from an amalgamation-with-predimension construction in the style of Hrushovski. The theory includes necessary and sufficient conditions for a system of equations to have a solution. The necessary condition generalizes Ax's differential fields version of Schanuel's conjecture to semiabelian varieties. There is a purely algebraic corollary, the "Weak CIT" for semiabelian varieties, which concerns the intersections of algebraic subgroups with algebraic varieties.Comment: 53 pages; v3: Substantial changes, including a completely new introductio

Junior faculty exchange program assists mid-career clinician-educators increase scholarly activity and meet promotion requirements

Project: Our institution requires peer-review scholarly products and an extramural reputation for promotion of clinician-educators to Associate Professor. Given a lack of robust research skill training during residency and a paucity of research mentors in our Division of Hospital Medicine, meeting these two promotion requirements has been especially challenging for many of our hospitalist faculty. We established a junior faculty exchange with other institutions in order to assist individual faculty members to gain a reputation outside of their home institutions, to develop external mentorship and career advice relationships with early career faculty, and to enhance networking and project collaborations. Methods: Participants were mid-career faculty who would gain the maximal career benefit from delivering an invited visit to an external institution and who have sufficient track record to deliver effective mentoring advice to early career hospitalists. Faculty at the late Assistant Professor level or recently promoted Associate Professors were selected by their Divisions leadership to spend one day at a hosting institution, deliver an invited grand rounds or similar didactic presentation, meet with senior leadership, and provide career advice to junior faculty. The program was reciprocal with one faculty member visiting an institution in exchange for that institution hosting a faculty member for a similar invited visit. Each institution covered the cost of travel and hotel accommodations. No honoraria were paid. Results: Over the first two years, four junior academic hospitalists were exchanged between three institutions. There was a high degree of satisfaction among surveyed visiting and visited junior faculty. Two on-going collaborative relationships and one jointly authored paper have resulted to date. Conclusion: A junior faculty exchange program assisted mid-career academic hospitalists establish extramural collaborations and meet promotion requirements that have been problematic at our institution. Implication: This relatively inexpensive faculty development program is easily adaptable by other institutions and may help generalist faculty increase scholarly activity, develop extra-institutional relationships, and achieve promotion.\u2