444 research outputs found

    Understanding the Public Education Gender Gap Amid Secondary and Central Office Administrators

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    Despite advances in political movements and societal awareness, there is still an obvious gender discrepancy among U.S. public education secondary school and superintendent positions plaguing our nation. Data indicates that most middle and high school classroom teaching positions are filled by women and yet more campuses and districts are led by men. The literature review uncovered two main categories that lead to this gap: external and internal factors. Societal bias, stereotypes, and hiring practices are among the external causations of this margin. Likewise, work life balance and self-desire to combat old organizational structure impact women internally from assuming advanced leadership positions. Based on this information, and two guiding questions addressing women’s challenges and perceptions were explored, and an anonymous survey of current and aspiring leaders from three Houston, Texas area public school districts was administered. The results demonstrate a correlation to the two categories discovered through the literature review and key findings were generated to gain more understanding into the gender gap. The study includes direct comments and experiences provided by the study group. More importantly, the study provided viable insight into steps and further study options that can be generated to continue the conversation addressing a more balanced leadership profile

    “Couch-to-5k or Couch to Ouch to Couch!?” Who Takes Part in Beginner Runner Programmes in the UK and Is Non-Completion Linked to Musculoskeletal Injury?

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    Physical activity has mental and physical health benefits, however globally, three-quarters of the population do not meet physical activity guidelines. The Couch-to-5k is a beginner runners pro-gramme aimed at increasing physical activity. However, this programme lacks an evidence-base and it is unclear who is attracted to the programme, plus running has a high rate of musculoskel-etal (MSK) injuries. The aims of this study were to identify the characteristics of people taking part, the incidence of MSK injuries and to explore the experiences of people who dropped out of a modified 9-week Couch-to-5k programme. 110 runners (average age was 47.1±13.7 years) partic-ipated in the study which involved completion of questionnaires (running experience and foot-wear information, quality of life (EQ-5D-5L), physical activity level (IPAQ-short form), MSK inju-ry history and knee condition (SNAPPS and KOOS-PS)) at the start, middle and end of the pro-gramme collecting socio-demographics (age, gender, social economic status, relationship status, education level), body mass index, running experience , footwear information, quality of life, physical activity levels, MSK injuries and knee condition. Fifteen drop-outs were interviewed to explore experiences of the programme. Runners were mainly females (81.8%) with an average age 47.1-year-olds, average body mass index of 28.1kg.m2, mainly from high socio-economic lev-els, married and educated to degree level. 64% of the sample had previous running experience and were classified as active. Half the sample self-reported pain / discomfort and 37.2% reported anxiety / depression at the start of the programme via the EQ-5D-5L scale. Self-reported health scores increased (p = 0.047) between baseline (73.1±18.8 out of 100) and at the midpoint (81.2±11.6) but were no significant differences between any other time points (end point 79.7±17.5, p>0.05). Twenty-one injuries were reported during the programme (19%). Previous in-jury increased the risk of new injury (OR 7.56 95% CI 2.06 to 27.75). Only 27.3% completed the programme. Three themes emerged from interviews; MSK injury, negative emotions linked to non-completion and design of the programme. The Couch-to-5k may not attract diverse inactive populations, future work with larger sample sizes is needed to substantiate this finding. Drop-ping out was linked to MSK injury and progressive design, future programmes should consider including injury prevention advice and more flexible designs

    Les méthodes expérimentales dans la recherche en Management International.

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    International audienceLes methodes expeŕimentales dans la recherche en management international RESUME Les méthodes expérimentales sont depuis longtemps employées en Sciences naturelles afin de tester une hypothèse en contrôlant les conditions d'expérimentation. Ces méthodes ont été reprises en Sciences économiques et de gestion ces dernières décennies, et sont devenues une référence dans certaines sous-disciplines comme le marketing. Or, les expérimentations restent rares dans la recherche en management international. Dans ce chapitre, nous présentons les difficultés, mais aussi les avantages des méthodologies expérimentales dans cette sous-discipline à travers l'exemple du projet InterCCom, portant sur la compétence interculturelle. Grâce au développement d'un jeu sérieux informatisé dans le cadre de ce projet, les comportements des membres d'une équipe internationale virtuelle sont mesurés, ce qui permettra de réponse à des problématiques de recherche variées

    Gateway to offending behaviour: permission-giving thoughts of online users of child sexual exploitation material.

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    The endorsement of permission-giving thoughts, or so-called cognitive distortions, has been discussed as a contributing factor in sexually abusive behaviour. The current study set out to explore the thinking patterns of offenders who have used/downloaded child sexual exploitation material (CSEM), based on a survey of professionals. A thematic analysis elicited four overarching themes, namely the Perceived Nature of Children (perception of children portrayed in CSEM, as well as children in general), Non-sexual Engagement with CSEM (motivating factors that are not inherently sexual in nature), Denial of Harm (perception of the level of harm caused by CSEM), and Expression of a General Sexual Preference (general interest in deviant sexual behaviour). These themes aid to explore the differences and similarities between contact and non-contact offenders and to improve the understanding of the role of permission-giving thoughts in this offending. Results are discussed in terms of their theoretical significance and future implications

    Body talk in the digital age: a controlled evaluation of a classroom-based intervention to reduce appearance commentary and improve body image

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    This research evaluates the efficacy of a classroom-based intervention – Body Talk in the Digital Age (BTIDA) – in reducing adolescents’ appearance commentary and improving body image. British adolescents (N = 314; AgeRange = 12–14) were cluster randomised to intervention or waiting-list control groups. Measures of appearance commentary, appearance ideal internalisation, self-objectification and body satisfaction were completed at baseline (T1), then one-week (T2) and eight-week (T3) post-intervention. Multi-level modelling showed girls who received BTIDA reported less appearance commentary engagement and thin ideal internalisation at T2 and T3, than the control, supporting the partial efficacy of BTIDA for girls. No intervention effects were found among boys

    Pathways to Belonging and Engagement: Testing a Tailored Social Belonging Intervention for University Students

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    Background Prominent theories of motivation suggest that belonging plays a critical role in student success (Connell & Wellborn, 1991). Social-belonging interventions have been shown to improve student belonging, well-being, engagement, and more—especially those from traditionally disadvantaged backgrounds (Walton & Brady, 2017). The current study aimed to explore the effects of a tailored social-belonging intervention delivered in introductory classes at VCU on students’ belonging, engagement, persistence, and achievement. Methods A diverse sample of first-year undergraduate students at VCU participated. To create authentic intervention materials, we collaborated with a diverse group of upper-level undergraduate student researchers who wrote narratives to present vivid stories of how they personally experienced and overcame struggles to belong. Prior to and following the intervention, students completed a survey that assessed student belonging, engagement, and social and academic fit. We also collected student demographics, achievement, and additional data from institutional records. Results Following the implementation of the belonging intervention, data was collected on students’ sense of belonging, their social and academic fit at the university, and other related outcomes. While most students felt as though they belonged at VCU and had the potential to succeed, there were still some students who worried whether they belonged in college. Conclusions From students’ responses, faculty and advisors of first-year students were given an overview on students’ current states of belonging at VCU. As an implication for future research, we argue that including diverse upper-level students as fellow researchers in this work strengthens the authenticity and effectiveness of the belonging intervention.https://scholarscompass.vcu.edu/gradposters/1171/thumbnail.jp

    The C. elegans ephrin EFN-4 functions non-cell autonomously with heparan sulfate proteoglycans to promote axon outgrowth and branching

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    The Eph receptors and their cognate ephrin ligands play key roles in many aspects of nervous system development. These interactions typically occur within an individual tissue type, serving either to guide axons to their terminal targets or to define boundaries between the rhombomeres of the hindbrain. We have identified a novel role for the Caenorhabditis elegans ephrin EFN-4 in promoting primary neurite outgrowth in AIY interneurons and D-class motor neurons. Rescue experiments reveal that EFN-4 functions non-cell autonomously in the epidermis to promote primary neurite outgrowth. We also find that EFN-4 plays a role in promoting ectopic axon branching in a C. elegans model of X-linked Kallmann syndrome. In this context, EFN-4 functions non-cell autonomously in the body wall muscle, and in parallel with HS biosynthesis genes and HSPG core proteins, which function cell autonomously in the AIY neurons. This is the first report of an epidermal ephrin providing a developmental cue to the nervous system

    POTs: Protective Optimization Technologies

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    Algorithmic fairness aims to address the economic, moral, social, and political impact that digital systems have on populations through solutions that can be applied by service providers. Fairness frameworks do so, in part, by mapping these problems to a narrow definition and assuming the service providers can be trusted to deploy countermeasures. Not surprisingly, these decisions limit fairness frameworks' ability to capture a variety of harms caused by systems. We characterize fairness limitations using concepts from requirements engineering and from social sciences. We show that the focus on algorithms' inputs and outputs misses harms that arise from systems interacting with the world; that the focus on bias and discrimination omits broader harms on populations and their environments; and that relying on service providers excludes scenarios where they are not cooperative or intentionally adversarial. We propose Protective Optimization Technologies (POTs). POTs provide means for affected parties to address the negative impacts of systems in the environment, expanding avenues for political contestation. POTs intervene from outside the system, do not require service providers to cooperate, and can serve to correct, shift, or expose harms that systems impose on populations and their environments. We illustrate the potential and limitations of POTs in two case studies: countering road congestion caused by traffic-beating applications, and recalibrating credit scoring for loan applicants.Comment: Appears in Conference on Fairness, Accountability, and Transparency (FAT* 2020). Bogdan Kulynych and Rebekah Overdorf contributed equally to this work. Version v1/v2 by Seda G\"urses, Rebekah Overdorf, and Ero Balsa was presented at HotPETS 2018 and at PiMLAI 201

    Ketamine effects on memory reconsolidation favor a learning model of delusions.

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    Delusions are the persistent and often bizarre beliefs that characterise psychosis. Previous studies have suggested that their emergence may be explained by disturbances in prediction error-dependent learning. Here we set up complementary studies in order to examine whether such a disturbance also modulates memory reconsolidation and hence explains their remarkable persistence. First, we quantified individual brain responses to prediction error in a causal learning task in 18 human subjects (8 female). Next, a placebo-controlled within-subjects study of the impact of ketamine was set up on the same individuals. We determined the influence of this NMDA receptor antagonist (previously shown to induce aberrant prediction error signal and lead to transient alterations in perception and belief) on the evolution of a fear memory over a 72 hour period: they initially underwent Pavlovian fear conditioning; 24 hours later, during ketamine or placebo administration, the conditioned stimulus (CS) was presented once, without reinforcement; memory strength was then tested again 24 hours later. Re-presentation of the CS under ketamine led to a stronger subsequent memory than under placebo. Moreover, the degree of strengthening correlated with individual vulnerability to ketamine's psychotogenic effects and with prediction error brain signal. This finding was partially replicated in an independent sample with an appetitive learning procedure (in 8 human subjects, 4 female). These results suggest a link between altered prediction error, memory strength and psychosis. They point to a core disruption that may explain not only the emergence of delusional beliefs but also their persistence

    Using [Ne V]/[Ne III] to Understand the Nature of Extreme-Ionization Galaxies

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    Spectroscopic studies of extreme-ionization galaxies (EIGs) are critical to our understanding of exotic systems throughout cosmic time. These EIGs exhibit spectral features requiring >54.42 eV photons: the energy needed to fully ionize helium into He2+ and emit He II recombination lines. They are likely key contributors to reionization, and they can also probe exotic stellar populations or accretion onto massive black holes. To facilitate the use of EIGs as probes of high ionization, we focus on ratios constructed from strong rest-frame UV/optical emission lines, specifically [O III] 5008, H-beta, [Ne III] 3870, [O II] 3727,3729, and [Ne V] 3427. These lines probe the relative intensity at energies of 35.12, 13.62, 40.96, 13.62 eV, and 97.12, respectively, covering a wider range of ionization than traced by other common rest-frame UV/optical techniques. We use ratios of these lines ([Ne V]/[Ne III] = Ne53 and [Ne III]/[O II]), which are closely separated in wavelength, and mitigates effects of dust attenuation and uncertainties in flux calibration. We make predictions from photoionization models constructed from Cloudy that use a broad range of stellar populations and black hole accretion models to explore the sensitivity of these line ratios to changes in the ionizing spectrum. We compare our models to observations from the Hubble Space Telescope and James Webb Space Telescope of galaxies with strong high-ionization emission lines at z ~ 0, z ~ 2, and z ~ 7. We show that the Ne53 ratio can separate galaxies with ionization from 'normal' stellar populations from those with AGN and even 'exotic' Population III models. We introduce new selection methods to identify galaxies with photoionization driven by Population III stars or intermediate-mass black hole accretion disks that could be identified in upcoming high-redshift spectroscopic surveys.Comment: 16 pages, 5 figures, 1 table. Accepted in Ap
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