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In this essay, we call upon our fellow scholars of colour to recognise the ways Business Schools are structured by white supremacy and actively de-value our knowledge and experiences. Alongside this recognition, collective action led by scholars of colour is needed to build intergenerational support systems which will be key to dismantling racialised power structures as they appear locally and transnationally. White scholars are invited to listen and learn from this call.

Authenticity has been a focus of much leadership research in recent years. Despite this interest, there has been a dearth of studies that explore the role of gender in the social construction of authenticity. To date, authentic leadership theories have tended to be either gender neutral or, where gender has been considered, it is argued that women as ‘outsiders’ are less likely to be accepted by their followers as authentic leaders. In this study we examine the media representations of the CEOs — one male, one female — of two major Australian retail banks during the global financial crisis. Our approach enables us to show that authenticity is something leaders ‘do’ rather than something they ‘have’ or ‘are’, and that being constructed as authentic depends on the leader performing authenticity in line with gender norms deemed appropriate for the socially constructed context in which they are expected to lead.

This article draws on critical race theory to interrogate whiteness in dominant discourses of leadership. We conducted a discourse analysis of the media representations of 12 business leaders engaged in philanthropy in Australia to demonstrate how white practices of normalisation, solipsism and ontological expansiveness underpin the construction of white leaders as speaking for society, mastering all environments and self-sacrificing for the greater good. Our analysis suggests that 'doing leadership' is inextricably linked to 'doing whiteness', while the invisible presence of whiteness in leadership discourses sustains white power and privilege. By 'naming' whiteness and its practices, we aspire to unhinge it from its location as transparent, dominant and ordinary, and begin theorising leadership in ways that are conducive to the goals of racial equality.Leadership 0(0) 1-29

The contact electrification of insulating organic polymers is still incompletely understood, in part because multiple fundamental mechanisms may contribute to the movement of charge. This study describes a mechanism previously unreported in the context of contact electrification: that is, “contact de-electrification”, a process in which polymers charged to the same polarity discharge on contact. Both positively charged polymeric beads, e.g., polyamide 6/6 (Nylon) and polyoxymethylene (Delrin), and negatively charged polymeric beads, e.g., polytetrafluoroethylene (Teflon) and polyamide-imide (Torlon), discharge when the like-charged beads are brought into contact. The beads (both with charges of ∼±20 μC/m2, or ∼100 charges/μm2) discharge on contact regardless of whether they are made of the same material, or of different materials. Discharge is rapid: discharge of flat slabs of like-charged Nylon and Teflon pieces is completed on a single contact (∼3 s). The charge lost from the polymers during contact de-electrification transfers onto molecules of gas in the atmosphere. When like-charged polymers are brought into contact, the increase in electric field at the point of contact exceeds the dielectric breakdown strength of the atmosphere and ionizes molecules of the gas; this ionization thus leads to discharge of the polymers. The detection (using a Faraday cup) of charges transferred to the cup by the ionized gas is compatible with the mechanism. Contact de-electrification occurs for different polymers and in atmospheres with different values of dielectric breakdown strength (helium, argon, oxygen, carbon dioxide, nitrogen, and sulfur hexafluoride): the mechanism thus appears to be general.

Purpose -The purpose of this paper is to introduce a conceptual model that integrates multi-disciplinary research in relation to crisis management, and to consider its application for international human resource managers in preventing and managing the evacuation of expatriate staff during crises. Design/methodology/approach -The paper critically reviews and distils research into crisis and evacuation management, and examines its relevance to a generic framework of international human resource roles. The paper evaluates this body of literature and suggests potential research avenues from an international human resource perspective. Findings -The review reveals a dearth of research on emergency evacuation of expatriates from a human resources perspective. The paper articulates a framework that delineates what role human resource managers could, or should, play during crisis preparation and response. This framework aims to establish a basic "roadmap" for use by practitioners and researchers. Originality/value -Focusing on the human (rather than business) implications of crises, the paper links crisis management literature to the role of international human resource managers in supporting the health, safety, and security of international assignees during crises. A framework is presented which enables managers to map their current (and potential) contributions to preventing and managing expatriate evacuation. From this, several avenues of future research are drawn.

Ubiquitin-dependent proteolysis is a major mechanism that downregulates misfolded proteins or those that have finished a programmed task. In the last two decades, neddylation has emerged as a major regulatory pathway for ubiquitination. Central to the neddylation pathway is the amyloid precursor protein (APP)-binding protein APP-BP1, which together with Uba3, plays an analogous role to the ubiquitin-activating enzyme E1 in nedd8 activation. Activated nedd8 covalently modifies and activates a major class of ubiquitin ligases called Cullin-RING ligases (CRLs). New evidence suggests that neddylation also modifies Type-1 transmembrane receptors such as APP. Here we review the functions of neddylation and summarize evidence suggesting that dysfunction of neddylation is involved in Alzheimer's disease.

Objectives: The objective was to review the clinical outcomes of children with suspected appendicitis after an ultrasound (US) examination fails to fully visualize the appendix, the diagnostic characteristics of US in children with suspected appendicitis, and the predictive value of secondary signs of appendicitis when the appendix is not fully visualized.Methods: This was a retrospective health record review of children aged 3 to 17 years presenting to a tertiary pediatric emergency department (ED) with suspected appendicitis. Descriptive statistics and diagnostic test characteristics are reported.Results: Overall, 968 children had US. The appendix was fully visualized in 442 cases (45.7%), and 526 (54.3%) children had incompletely visualized appendices. The disposition of those with incompletely visualized appendices were as follows: 59.1% were discharged home, 10.5% went directly to the operating room, and 30.4% were admitted to the hospital for further observation. Of those discharged home based on clinical findings after incompletely visualized appendices, fewer than 0.3% ended up having appendicitis. Ultimately 15.6% of children with incompletely visualized appendices had pathologyconfirmed appendicitis. The sensitivity and specificity of US for children with fully visualized appendices were 99.5% (95% confidence interval [CI] = 96.7% to 100%) and 81.3% (95% CI = 75.2% to 86.2%), respectively. The sensitivity and specificity for the presence of any secondary sign in diagnosing appendicitis were 40.2% (95% CI = 29.6% to 51.7%) and 90.6% (95% CI = 87.5% to 93.2%), respectively. Conclusions:Children with incompletely visualized appendices on US can be safely discharged home based on clinical findings with an acceptable rate of missed appendicitis. Children with nonreassuring clinical examinations following incompletely visualized appendices on US may benefit from further imaging studies prior to appendectomy, to reduce the rate of negative appendectomy. While the presence of secondary signs of inflammation can be used to rule in appendicitis, statistical strength to rule out appendicitis in the absence of secondary signs is insufficient.ACADEMIC EMERGENCY MEDICINE 2014;21:538-542