The Impact of Longitudinal Action Research on Doctoral Student Retention and Degree Completion

The impact of a longitudinal action research (LAR) project on the retention and success of students enrolled in a leadership studies doctoral program was the focus of this study. The purpose was to understand how the experiences obtained through an action research project, conducted over 12-15 months, affected students’ development while they completed the first two years of their doctoral coursework. Ten doctoral students, who were at various stages in their educational journey, were interviewed and asked to reflect upon their experiences while completing their LAR project. Findings indicated that the LAR project provided an opportunity to apply theoretical concepts and methodological tools obtained in their classes to real-world issues and concerns within their respective organizations. Additionally, students indicated that the experiences obtained through LAR projects increased appreciation for their doctoral education which, in turn, impacted their retention and success

Stroke secondary prevention: everyone's business

Stroke secondary prevention is everyone’s business and requires cohesive working across the multiprofessional team and beyond [...

Prevalence of gambling disorder among prisoners: a systematic review

This article presents the first systematic review of studies on the prevalence of gambling disorder among prisoners across international jurisdictions. Only original studies that were published in English and employed reliable and valid screening tools are included in this analysis. The review finds that rates of problem or pathological gambling in prison populations are highly variable, ranging from 5.9% to 73% of male and female inmates surveyed. Nevertheless, recorded rates of problem and pathological gambling among inmates are consistently and significantly higher than rates of problem and pathological gambling recorded among the general population. The review indicates that the institution of problem gambling treatment programmes in carceral settings is necessary, to aid community re-entry and reduce the likelihood of re-offending. Moreover, it is suggested that the screening of inmates should become standard practice across penal institutions and other criminal justice organisations, with a view to better addressing the needs of offenders

Aerobic Capacity and Postprandial Flow Mediated Dilation

The consumption of a high-fat meal induces transient vascular dysfunction. Aerobic exercise enhances vascular function in healthy individuals. Our purpose was to determine if different levels of aerobic capacity impact vascular function, as measured by flow mediated dilation, following a high-fat meal. Flow mediated dilation of the brachial artery was determined before, two- and four-hours postprandial a high-fat meal in young males classified as highly trained (n = 10; VO2max = 74.6 ± 5.2 ml·kg·min-1) or moderately active (n = 10; VO2max = 47.3 ± 7.1 ml·kg·min-1). Flow mediated dilation was reduced at two- (p \u3c 0.001) and four-hours (p \u3c 0.001) compared to baseline for both groups but was not different between groups at any time point (p = 0.108). Triglycerides and insulin increased at two- (p \u3c 0.001) and four-hours (p \u3c 0.05) in both groups. LDL-C was reduced at four-hours (p = 0.05) in highly trained subjects, and two- and four-hours (p ≤ 0.01) in moderately active subjects. HDL-C decreased at two- (p = 0.024) and four-hours (p = 0.014) in both groups. Glucose increased at two-hours postprandial for both groups (p = 0.003). Our results indicate that a high-fat meal results in reduced endothelium-dependent vasodilation in highly trained and moderately active individuals with no difference between groups. Thus, high aerobic capacity does not protect against transient reductions in vascular function after the ingestion of a single high-fat meal compared to individuals who are moderately active

“We’ve Been Forgotten”: First-hand Perspectives on Teacher Leaders and Teacher Leadership in Urban Schools

The use of teacher leadership in PK-12 education has experienced a resurgence since the late 1990\u27s as school leadership models have evolved to include the engagement of diverse stakeholders in school and district leadership processes aimed at positive change and improvement efforts. Despite the recent evolution of school leadership, there remain several barriers to understanding the nature of the work that teacher leaders engage in and the contributions that they make to improvement efforts. This grounded theory study examined teacher perceptions of teacher leadership, the types of work teacher leaders should engage in and the boundaries of that work, and barriers to teacher leadership. Using interview data from 22 teachers in a large urban school district, we found that teachers function in many domains of work and are eager for pathways to leverage their expertise. We conclude by discussing the implications from our findings to district- and school-level leaders

Immunity to Chlamydia trachomatis and Host-Pathogen Interactions During Infection

Infections with the bacterial pathogen Chlamydia trachomatis are a critical public health problem. Chlamydia remains the number one cause of preventable blindness worldwide and the leading cause of bacterial sexually transmitted infections in the United States. In humans, repeat and persistent infections with Chlamydia result in severe inflammation. Inflammation in the conjunctiva can result in blindness, while inflammation in the genital tract can result in pelvic inflammatory disease, ectopic pregnancy or infertility. In order to curb the increasing incidence of Chlamydia infections worldwide it will be necessary to develop a protective vaccine that affords long-term protection and prevents pathologies. To better inform vaccine development we must understand the mechanisms that drive long-term immunity in the genital tract and elucidate critical interactions between Chlamydia and host cells to uncover potential mechanisms of immune evasion

HIV Status and Labor Market Participation in South Africa

Because individuals with HIV are more likely to fall into poverty, and the poor may be at higher risk of contracting HIV, simple estimates of the effect of HIV status on economic outcomes will tend to be biased. In this paper, we use two econometric methods based on the propensity score to estimate the causal effect of HIV status on employment outcomes in South Africa. We rely on rich data on sexual behavior and knowledge of HIV from a large national household-based survey, which included HIV testing, to control for systematic differences between HIV-positive and HIV-negative individuals. This paper provides the first nationally representative estimates of the impact of HIV status on labor market outcomes for southern Africa. We find that being HIV-positive is associated with a 6 to 7 percentage point increase in the likelihood of being unemployed. South Africans with less than a high school education are 10 to 11 percentage points more likely to be unemployed if they are HIV-positive. Despite high unemployment rates, being HIV-positive confers a disadvantage and reinforces existing inequalities in South Africa.

Stability of Neutrinos in the Singlet Majoron Model

We show that there is no one-loop enhancement of the rate for a light neutrino to decay into a lighter neutrino plus a majoron, contrary to a recent claim. Thus the light neutrinos must satisfy the cosmological bound of having masses less than 35 eV in the singlet majoron model, or else violate the constraint imposed by galaxy formation. In the latter case, $\nu_\tau$ could have a mass between 40 and 500 keV, while satisfying all other cosmological constraints.Comment: 11 pp., latex, UMN-TH-1218-93. Correct nucleosynthesis bound of 500 keV on nu_tau mass is incorporated; one-loop electroweak contribution to neutrino mass is correcte

Hiding relativistic degrees of freedom in the early universe

We quantify the extent to which extra relativistic energy density can be concealed by a neutrino asymmetry without conflicting with the baryon asymmetry measured by the Wilkinson Microwave Anisotropy Probe (WMAP). In the presence of a large electron neutrino asymmetry, slightly more than seven effective neutrinos are allowed by Big Bang Nucleosynthesis (BBN) and WMAP at 2\sigma. The same electron neutrino degeneracy that reconciles the BBN prediction for the primordial helium abundance with the observationally inferred value also reconciles the LSND neutrino with BBN by suppressing its thermalization prior to BBN.Comment: 5 pages, 5 figure