Peer Feedback Among Nursing Students: Does it Enhance Learning?

Background: The American Nurses Association (ANA) describes that peer review is essential for excellent nursing practice and describes the principles of Peer Review. The Magnet program has embraced this in clinical excellence. Peer feedback has multiple benefits. Purpose: The purpose of this manuscript is to examine the literature on peer feedback and identify the benefits of peer feedback on student learning and information retention. Methods: Search terms such as Peer assessment, peer coaching, peer tutoring, peer-assisted learning, and informal peer learning were used to retrieve peer-reviewed publications from databases such as CINAHL, PubMed, and Google Scholar. The term Peer feedback is used in this manuscript Results: Twenty-four peer-reviewed publications were included in this review. Peer feedback improved learning, collaboration, and information retention. Challenges include feelings of lack of expertise, inadequacy, and bias for social conformity. Conclusion: Peer feedback opportunities will empower students, retain knowledge, develop skill competencies, and promote leadership in future nurses. Implications: Nursing schools should foster peer feedback opportunities as emerging nurses are prepared to work in teams effectively. Educators must be trained to equip students with best practices to give and receive feedback for professional success

Detection of Baryonic Acoustic Oscillations in the Matter Power Spectrum

Using the spectra of 22,923 high-redshift quasars from the Baryon Oscillation Spectrosocpic Survey (BOSS) subset of the Sloan Digital Sky Survey (SDSS), the authors detect evidence of the primordial baryonic acoustic oscillations (BAOs) in the matter power spectrum. The detection further endorses the currently accepted Lambda-CDM model of cosmology based upon the existence of dark energy (Lambda) and cold dark matter (CDM). Additionally, the use of the continuous wavelet transform to calculate the power spectrum has many advantages over traditional Fourier methods and independently corroborates previous detections

Chirality-Assisted Synthesis of Single-Handed Freeform Helical Ladder Polymers

In nature, shape defines function, and as such scientists have long since attempted to mimic nature in a pursuit to reach a similar level of fidelity. Complex macromolecular structures and shapes have been developed with interesting and unique functionalities—such as the design and synthesis of molecular machines. However, macromolecular structures such as these are difficult to synthesize. My work in the Schneebeli group builds upon this challenge, where I have developed a strategy to precisely control the shape of macromolecules to generate well-defined structures. This was accomplished with stereoisomerically pure triptycene-like derivatives as the building block pieces which have an inherent three-dimensional scaffold. With my own developed methodology by which they can be exactly functionalized, these building blocks can then couple together in a unique fashion not unlike Lego pieces. This synthetic technology leads to controlled growth of a molecular structure with precisely predictable shapes. In particular, my work involves the generation of short molecular strips, both linear and with a helical bend, as well as ladder polymer molecular helices of different pitches, which were probed for their spring-like motions. The development of these three-dimensional building blocks, their affinity for coupling in a controllable fashion, and their ability to be functionalized with through-space directed aromatic nitration methodology, laid the foundation for much of the research in the Schneebeli group related to chirality-assisted synthesis (CAS)

The development and evaluation of a smoking cessation programme for disadvantaged pregnant women in South Africa

Studies of smoking during pregnancy in South Africa have found exceptionally high smoking rates among disadvantaged women of mixed ethnic descent (46%) (Steyn et al., 1997; Petersen et al., 2009a). As a consequence, these women are at high risk of smoking-related pregnancy complications and poor birth outcomes. It has long been recommended that a smoking cessation intervention be developed specifically for this high risk group. There is strong evidence that best practice smoking cessation interventions for pregnant women can be effective in increasing quit rates, as well as in reducing the incidence of premature birth and low birth weight (Lumley et al., 2009). However, these interventions have only been studied in developed countries and it was unknown whether such programmes could be successfully applied to a South African setting. From 2002, the Medical Research Council of SA undertook a programme of research for the purposes of developing and evaluating a smoking cessation intervention, specifically for disadvantaged pregnant women attending public-sector, antenatal clinics in Cape Town. This thesis reports on several aspects of this research

Qualitative evaluation of primary care providers experiences of a training programme to offer brief behaviour change counselling on risk factors for non-communicable diseases in South Africa

Abstract Background The global epidemic of non-communicable disease (NCDs) has been linked with four modifiable risky lifestyle behaviours, namely smoking, unhealthy diet, physical inactivity and alcohol abuse. Primary care providers (PCPs) can play an important role in changing patient’s risky behaviours. It is recommended that PCPs provide individual brief behaviour change counselling (BBCC) as part of everyday primary care. This study is part of a larger project that re-designed the current training for PCPs in South Africa, to offer a standardized approach to BBCC based on the 5 As and a guiding style. This article reports on a qualitative sub-study, which explored whether the training intervention changed PCPs perception of their confidence in their ability to offer BBCC, whether they believed that the new approach could overcome the barriers to implementation in clinical practice and be sustained, and their recommendations on future training and integration of BBCC into curricula and clinical practice. Methods This was a qualitative study that used verbal feedback from participants at the beginning and end of the training course, and twelve individual in-depth interviews with participants once they had returned to their clinical practice. Results Although PCP’s confidence in their ability to counselling improved, and some thought that time constraints could be overcome, they still reported that understaffing, lack of support from within the facility and poor continuity of care were barriers to counselling. However, the current organisational culture was not congruent with the patient-centred guiding style of BBCC. Training should be incorporated into undergraduate curricula of PCPs for both nurses and doctors, to ensure that counselling skills are embedded from the start. Existing PCPs should be offered training as part of continued professional development programmes. Conclusions This study showed that although training changed PCPs perception of their ability to offer BBCC, and increased their confidence to overcome certain barriers to implementation, significant barriers remained. It is clear that to incorporate BBCC into everyday care, not only training, but also a whole systems approach is needed, that involves the patient, provider, and service organisation at different levels

Continuum Halos in Nearby Galaxies -- an EVLA Survey (CHANG-ES) -- I: Introduction to the Survey

We introduce a new survey to map the radio continuum halos of a sample of 35 edge-on spiral galaxies at 1.5 GHz and 6 GHz in all polarization products. The survey is exploiting the new wide bandwidth capabilities of the Karl G. Jansky Very Large Array (i.e. the Expanded Very Large Array, or EVLA) in a variety of array configurations (B, C, and D) in order to compile the most comprehensive data set yet obtained for the study of radio halo properties. This is the first survey of radio halos to include all polarization products. In this first paper, we outline the scientific motivation of the survey, the specific science goals, and the expected improvements in noise levels and spatial coverage from the survey. Our goals include investigating the physical conditions and origin of halos, characterizing cosmic ray transport and wind speed, measuring Faraday rotation and mapping the magnetic field, probing the in-disk and extraplanar far-infrared - radio continuum relation, and reconciling non-thermal radio emission with high-energy gamma-ray models. The sample size allows us to search for correlations between radio halos and other properties, including environment, star formation rate, and the presence of AGNs. In a companion paper (Paper II) we outline the data reduction steps and present the first results of the survey for the galaxy, NGC 4631.Comment: 17 pages, 1 figure, accepted to the Astronomical Journal, Version 2 changes: added acknowledgement to NRA

Pregnant women's responses to a tailored smoking cessation intervention: turning hopelessness into competence

Background: Cognitive behavioral interventions consisting of brief counseling and the provision of self-help material designed for pregnancy have been documented as effective smoking cessation interventions for pregnant women. However, there is a need to understand how such interventions are perceived by the targeted group. Aim: To understand the cognitive, emotional, and behavioral responses of pregnant women to a clinic-based smoking cessation intervention. Methods: In-depth interviews with women attending four antenatal clinics in Cape Town, South Africa, who were exposed to a smoking intervention delivered by midwives and peer counselors. Women were purposively selected to represent a variation in smoking behavior. Thirteen women were interviewed at their first antenatal visit and 10 were followed up and reinterviewed later in their pregnancies. A content analysis approach was used, which resulted in categories and themes describing women's experiences, thoughts, and feelings about the intervention. Results: Five women quit, five had cut down, and three could not be traced for follow-up. All informants perceived the intervention positively. Four main themes captured the intervention's role in influencing women's smoking behavior. The process started with ‘understanding their reality,’ which led to ‘embracing change’ and ‘deciding to hold nothing back,’ which created a basis for ‘turning hopelessness into a feeling of competence.’Conclusion: The intervention succeeded in shifting women from feeling pessimistic about ever quitting to feeling encouraged to try and quit. Informants rated the social support they received very highly and expressed the need for the intervention to become a routine component of clinic services

The redshift distribution of dusty star forming galaxies from the SPT survey

We use the Atacama Large Millimeter/submillimeter Array (ALMA) in Cycle 1 to determine spectroscopic redshifts of high-redshift dusty star-forming galaxies (DSFGs) selected by their 1.4mm continuum emission in the South Pole Telescope (SPT) survey. We present ALMA 3mm spectral scans between 84-114GHz for 15 galaxies and targeted ALMA 1mm observations for an additional eight sources. Our observations yield 30 new line detections from CO, [CI] , [NII] , H_2O and NH_3. We further present APEX [CII] and CO mid-J observations for seven sources for which only a single line was detected in spectral-scan data from ALMA Cycle 0 or Cycle 1. We combine the new observations with previously published and new mm/submm line and photometric data of the SPT-selected DSFGs to study their redshift distribution. The combined data yield 39 spectroscopic redshifts from molecular lines, a success rate of >85%. Our sample represents the largest data set of its kind today and has the highest spectroscopic completeness among all redshift surveys of high-z DSFGs. The median of the redshift distribution is z=3.9+/-0.4, and the highest-redshift source in our sample is at z=5.8. We discuss how the selection of our sources affects the redshift distribution, focusing on source brightness, selection wavelength, and strong gravitational lensing. We correct for the effect of gravitational lensing and find the redshift distribution for 1.4mm-selected sources with a median redshift of z=3.1+/-0.3. Comparing to redshift distributions selected at shorter wavelengths from the literature, we show that selection wavelength affects the shape of the redshift distribution

On The GeV & TeV Detections of the Starburst Galaxies M82 & NGC 253

The GeV and TeV emission from M82 and NGC 253 observed by Fermi, HESS, and VERITAS constrains the physics of cosmic rays (CRs) in these dense starbursts. We argue that the gamma rays are predominantly hadronic in origin, as expected by previous studies. The measured fluxes imply that pionic losses are efficient for CR protons in both galaxies: we show that a fraction F_cal ~ 0.2 - 0.4 of the energy injected in high energy primary CR protons is lost to inelastic proton-proton collisions (pion production) before escape, producing gamma rays, neutrinos, and secondary electrons and positrons. We discuss the factor ~2 uncertainties in this estimate, including supernova rate and leptonic contributions to the GeV-TeV emission. We argue that gamma-ray data on ULIRGs like Arp 220 can test whether M82 and NGC 253 are truly calorimetric, and we present upper limits on Arp 220 from the Fermi data. We show that the observed ratio of the GeV to GHz fluxes of the starbursts suggests that non-synchrotron cooling processes are important for cooling the CR electron/positron population. We briefly reconsider previous predictions in light of the gamma-ray detections, including the starburst contribution to the gamma-ray background and CR energy densities. Finally, as a guide for future studies, we list the brightest star-forming galaxies on the sky and present updated predictions for their gamma-ray and neutrino fluxes.Comment: 15 pages, emulateapj format, accepted to ApJ, Table 1 fixe