6,174 research outputs found

    Exploring the Perceived Barriers that Create a Disadvantage for Black Women to Obtain Leadership Positions in the Finance and Investment Industry

    Get PDF
    This study focused on the barriers implied towards Black women when they pursue leadership opportunities in the finance industry, because the demographic is obtaining secondary level degrees at a high level rate, they remain underrepresented in leadership roles. The organizational standards that may disqualify Black women from achieving promotional opportunities in the workplace were explored for insight into the workplace experiences of Black women to determine the barriers present in the work structure that may cause promotional obstacles for the demographic. Through conducting interviews, the experiences of Black women that have been promoted to leadership roles along with those who aspire were analyzed to determine in which ways the demographic encounters in the workplace implies a hindrance. The findings of this study were decoded into a set of recommendations that will be established for the use of Black women in the workplace so that they could manage to break through barricades to inclusion. The conceptual frameworks that worked to organize data into categories of work are the Black feminist theory, the expectation states theory, and the glass ceiling theory. The findings may help to advance the careers of Black women, because the recommendations provided to the demographic and organizational leaders propose strategies to promote inclusion, diversity, and advocacy for Black women in the workplace. The results of the study will contribute to addressing the need for social change within the employers and policy makers to eliminate the exclusion of Black women from leadership positions. Business practices may be improved through the recognition of any unethical strategies within the recruitment, hiring, and promotional standards of corporations that causes the remiss to a large pool of talent

    Constrained by managerialism : caring as participation in the voluntary social services

    Get PDF
    The data in this study show that care is a connective process, underlying and motivating participation and as a force that compels involvement in the lives of others, care is at least a micro-participative process. Care or affinity not only persisted in the face of opposition, but it was also used by workers as a counter discourse and set of practices with which to resist the erosion of worker participation and open up less autonomized practices and ways of connecting with fellow staff, clients and the communities they served. The data suggest that while managerialism and taylorised practice models may remove or reduce opportunities for worker participation, care is a theme or storyline that gave workers other ways to understand their work and why they did it, as well as ways they were prepared to resist managerial priorities and directives, including the erosion of various kinds of direct and indirect participation. The degree of resistance possible, even in the highly technocratic worksite in Australia, shows that cracks and fissures exist within managerialism

    Automatic estimation of flux distributions of astrophysical source populations

    Full text link
    In astrophysics a common goal is to infer the flux distribution of populations of scientifically interesting objects such as pulsars or supernovae. In practice, inference for the flux distribution is often conducted using the cumulative distribution of the number of sources detected at a given sensitivity. The resulting "log(N>S)\log(N>S)-log(S)\log (S)" relationship can be used to compare and evaluate theoretical models for source populations and their evolution. Under restrictive assumptions the relationship should be linear. In practice, however, when simple theoretical models fail, it is common for astrophysicists to use prespecified piecewise linear models. This paper proposes a methodology for estimating both the number and locations of "breakpoints" in astrophysical source populations that extends beyond existing work in this field. An important component of the proposed methodology is a new interwoven EM algorithm that computes parameter estimates. It is shown that in simple settings such estimates are asymptotically consistent despite the complex nature of the parameter space. Through simulation studies it is demonstrated that the proposed methodology is capable of accurately detecting structural breaks in a variety of parameter configurations. This paper concludes with an application of our methodology to the Chandra Deep Field North (CDFN) data set.Comment: Published in at http://dx.doi.org/10.1214/14-AOAS750 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

    Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate

    Get PDF
    We present the first evidence of magnetic order in the quasi-one-dimensional spin 1/2 molecular chain compound, copper pyrazine dinitrate Cu(C4H4N2)(NO3)2}. Zero field muon-spin relaxation measurements made at dilution refrigerator temperatures show oscillations in the measured asymmetry, characteristic of a quasistatic magnetic field at the muon sites. Our measurements provide convincing evidence for long range magnetic order below a temperature T_N=107(1) mK. This leads to an estimate of the interchain coupling constant of |J'|/k_B=0.046 K and to a ratio |J'/J| = 4.4 x 10^-3.Comment: 4 pages, 3 figures. Submitted to Physical Review Letter

    Cellular excitability and the regulation of functional neuronal identity: from gene expression to neuromodulation

    Get PDF
    The intrinsic properties of a neuron determine the translation of synaptic input to axonal output. It is this input– output relationship that is the heart of all nervous system activity. As such, the overall regulation of the intrinsic excitability of a neuron directly determines the output of that neuron at a given point in time, giving the cell a unique “functional identity.” To maintain this distinct functional output, neurons must adapt to changing patterns of synaptic excitation. These adaptations are essential to prevent neurons from either falling silent as synaptic excitation falls or becoming saturated as excitation increases. In the absence of stabilizing mechanisms, activity-dependent plasticity could drive neural activity to saturation or quiescence. Furthermore, as cells adapt to changing patterns of synaptic input, presumably the overall balance of intrinsic conductances of the cell must be maintained so that reliable output is achieved (Daoudal and Debanne, 2003; Turrigiano and Nelson, 2004; Frick and Johnston, 2005). Although these regulatory phenomena have been well documented, the molecular and physiological mechanisms involved are poorly understood

    Actin in Herpesvirus Infection

    Get PDF
    Actin is important for a variety of cellular processes, including uptake of extracellular material and intracellular transport. Several emerging lines of evidence indicate that herpesviruses exploit actin and actin-associated myosin motors for viral entry, intranuclear transport of capsids, and virion egress. The goal of this review is to explore these processes and to highlight potential future directions for this area of research