9,778 research outputs found

    In traditionally male-dominated fields, women are less willing to make sacrifices for their career because discrimination and lower fit with people up the ladder make sacrifices less worthwhile

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    Women's lower career advancement relative to men is sometimes explained by internal factors such as women's lower willingness to make sacrifices for their career, and sometimes by external barriers such as discrimination. In the current research, positing a dynamic interplay between internal and external factors, we empirically test how external workplace barriers guide individuals' internal decisions to make sacrifices for the advancement of their careers. In two high-powered studies in traditionally male-dominated fields (surgery, N = 1,080; veterinary medicine, N = 1,385), women indicated less willingness than men to make sacrifices for their career. Results of structural equation modeling demonstrated that this difference was explained by women's more frequent experience of gender discrimination and lower perceptible fit with people higher up the professional ladder. These barriers predicted reduced expectations of success in their field (Study 1) and expected success of their sacrifices (Study 2), which in turn predicted lower willingness to make sacrifices. The results explain how external barriers play a role in internal career decision making. Importantly, our findings show that these decision-making processes are similar for men and women, yet, the circumstances under which these decisions are made are gendered. That is, both men and women weigh the odds in deciding whether to sacrifice for their career, but structural conditions may influence these perceived odds in a way that favors men. Overall, this advances our understanding of gender differences, workplace inequalities, and research on the role of “choice” and/or structural discrimination behind such inequalities

    Admission Criteria as Predictors of Student Success

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    Objective: Evaluate impact of various admission criteria elements (cognitive, behavioral) as predictors of first-term college GPA and on-time graduation. Methods & Results: Predictive models were developed to examine if the current admission criteria: high school GPA (HSGPA), ACT Composite score, interview score, etc are significant predictors for student success defined as first-term college GPA, on-time graduation among PharmD students at a direct entry private university. The study sample consisted of 395 pharmacy students matriculated as first-time freshmen students during fall 2007 through fall 2009. Results from the hierarchical linear regression analysis indicated that both HSGPA and ACT Composite score were significant predictors for first-term college GPA. After taking into account relevant demographic factors, the final model explained 22% of the total variance in first-term college GPA, with HSGPA accounting for 18% of the total variance and ACT Composite score accounting for only 3%. For predicting on-time graduation using the logistic regression method, HSGPA alone was the significant predictor while the model had no substantial impact on predicting on-time graduation (4% of the total variance). Further study is needed to develop a more comprehensive model involving behavioral or psychosocial factors impacting student success outcomes. Implications: This data was used to adjust relative weight of HSGPA and standardized tests scores in the application evaluation rubric. It is also being used to allocate student services resources for student retention initiatives

    Postoperative severe headache following cervical posterior surgical fixation from C2 distally

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    Study DesignRetrospective study.PurposeTo identify the prevalence of severe headache occurring after cervical posterior surgical fixation (PSF) and to evaluate the clinical and radiological findings associated with severe headache after surgery.Overview of LiteratureSeveral studies have reported on the axial pain after cervical surgery. However, to our knowledge, the incidence of severe headache after cervical PSF has not been elucidated.MethodsThe medical records and radiological assessment of patients who underwent surgical treatment from August 2002 to May 2012 were reviewed to identify the prevalence and risk factors for severe headaches occurring following PSF from C2 distally. Neck disability index scores (NDI) (the item for neck pain), the type of C2 screw, number of cervical fused levels (1–6), and smoking habit were calculated preoperatively and postoperatively. In addition, radiological parameters (T1 slope angle, C1/2 angle, C2–7 Cobb angle, C2–7 sagittal vertical axis and C1-implant distance) were assessed for all patients. Severe headache was defined as a high NDI headache score (>4 out of 5).ResultsEighty-two patients met the inclusion criteria. The mean age was 59.2 years (range, 21–78 years), and the mean number of fused levels was 5.1. The mean follow-up period was 2.9 years (range, 1–10.9 years). While only one severe headache occurred de novo postoperatively in a patient in the C3 or C4 distally group (total 30 patients, average age of 50.2 years), 11 patients in the C2 distally group (p=0.04) had severe headache occur postoperatively. The radiological parameters were not significantly different between the postoperative milder headache and severe headache (SH) groups. The SH group had a significantly higher preoperative NDI score (neck pain) (p<0.01).ConclusionsNewly occurring severe headaches can occur in 18% of patients after PSF from C2 distally. The patients with newly occurring severe headaches had significantly higher preoperative NDI score (neck pain)

    24^{24}Mg(pp, α\alpha)21^{21}Na reaction study for spectroscopy of 21^{21}Na

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    The 24^{24}Mg(pp, α\alpha)21^{21}Na reaction was measured at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory in order to better constrain spins and parities of energy levels in 21^{21}Na for the astrophysically important 17^{17}F(α,p\alpha, p)20^{20}Ne reaction rate calculation. 31 MeV proton beams from the 25-MV tandem accelerator and enriched 24^{24}Mg solid targets were used. Recoiling 4^{4}He particles from the 24^{24}Mg(pp, α\alpha)21^{21}Na reaction were detected by a highly segmented silicon detector array which measured the yields of 4^{4}He particles over a range of angles simultaneously. A new level at 6661 ±\pm 5 keV was observed in the present work. The extracted angular distributions for the first four levels of 21^{21}Na and Distorted Wave Born Approximation (DWBA) calculations were compared to verify and extract angular momentum transfer.Comment: 11 pages, 6 figures, proceedings of the 18th International Conference on Accelerators and Beam Utilization (ICABU2014

    Academic leadership: changing conceptions, identities and experiences in UK Higher Education

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    © Leadership Foundation for Higher EducationThis report presents the findings from a research project on academic leadership in UK higher education. The overall aim of this project was to explore and understand ‘academic leadership’ that relates directly to the core academic functions of teaching, research and service (including academic administration and outreach), as distinct from managerial aspects of leading higher education institutions (HEIs) such as financial and strategic planning, marketing and human resource management (HRM).Leadership Foundation for Higher Educatio

    Impacts of Aerosol-Monsoon Interaction on Rainfall and Circulation over Northern India and the Himalaya Foothills

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    The boreal summer of 2008 was unusual for the Indian monsoon, featuring exceptional heavy loading of dust aerosols over the Arabian Sea and northern-central India, near normal all- India rainfall, but excessive heavy rain, causing disastrous flooding in the Northern Indian Himalaya Foothills (NIHF) regions, accompanied by persistent drought conditions in central and southern India. Using NASA Unified-physics Weather Research Forecast (NUWRF) model with fully interactive aerosol physics and dynamics, we carried out three sets of 7-day ensemble model forecast experiments: 1) control with no aerosol, 2) aerosol radiative effect only and 3) aerosol radiative and aerosol-cloud-microphysics effects, to study the impacts of aerosol monsoon interactions on monsoon variability over the NIHF during the summer of 2008. Results show that aerosol-radiation interaction (ARI), i.e., dust aerosol transport, and dynamical feedback processes induced by aerosol-radiative heating, plays a key role in altering the large scale monsoon circulation system, reflected by an increased north-south tropospheric temperature gradient, a northward shift of heavy monsoon rainfall, advancing the monsoon onset by 1-5 days over the HF, consistent with the EHP hypothesis (Lau et al. 2006). Additionally, we found that dust aerosols, via the semi-direct effect, increase atmospheric stability, and cause the dissipation of a developing monsoon onset cyclone over northeastern India northern Bay of Bengal. Eventually, in a matter of several days, ARI transforms the developing monsoon cyclone into mesoscale convective cells along the HF slopes. Aerosol-Cloud-microphysics Interaction (ACI) further enhances the ARI effect in invigorating the deep convection cells and speeding up the transformation processes. Results indicate that even in short-term (up to weekly) numerical forecasting of monsoon circulation and rainfall, effects of aerosol-monsoon interaction can be substantial and cannot be ignored

    Leadership as social identity management : introducing the Identity Leadership Inventory (ILI) to assess and validate a four-dimensional model

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    This work has been supported by a grant (FL110100199) from the Australian Research Council awarded to the second author, a grant from the Research Foundation Flanders awarded to the fifth author, and a grant from the National Natural Science Foundation of China (NSFC no. 70962001) awarded to the sixth author.Although nearly two decades of research have provided support for the social identity approach to leadership, most previous work has focused on leaders' identity prototypicality while neglecting the assessment of other equally important dimensions of social identity management. However, recent theoretical developments have argued that in order to mobilize and direct followers' energies, leaders need not only to ‘be one of us’ (identity prototypicality), but also to ‘do it for us’ (identity advancement), to ‘craft a sense of us’ (identity entrepreneurship), and to ‘embed a sense of us’ (identity impresarioship). In the present research we develop and validate an Identity Leadership Inventory (ILI) that assesses these dimensions in different contexts and with diverse samples from the US, China, and Belgium. Study 1 demonstrates that the scale has content validity such that the items meaningfully differentiate between the four dimensions. Studies 2, 3, and 4 provide evidence for the scale's construct validity (distinguishing between dimensions), discriminant validity (distinguishing identity leadership from authentic leadership, leaders' charisma, and perceived leader quality), and criterion validity (relating the ILI to key leadership outcomes). We conclude that by assessing multiple facets of leaders' social identity management the ILI has significant utility for both theory and practice.Publisher PDFPeer reviewe

    Linear optics and quantum maps

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    We present a theoretical analysis of the connection between classical polarization optics and quantum mechanics of two-level systems. First, we review the matrix formalism of classical polarization optics from a quantum information perspective. In this manner the passage from the Stokes-Jones-Mueller description of classical optical processes to the representation of one- and two-qubit quantum operations, becomes straightforward. Second, as a practical application of our classical-\emph{vs}-quantum formalism, we show how two-qubit maximally entangled mixed states (MEMS), can be generated by using polarization and spatial modes of photons generated via spontaneous parametric down conversion.Comment: 13 pages, 8 figure

    Observation of chi_c2 Production in B-meson Decay

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    We report the first observation of chi_c2 production in B-meson decays. We find an inclusive B -> chi_c2 X branching fraction of (1.80^{+0.23}_{-0.28}+/- 0.26) 10^-3. The data set, collected with the Belle detector at the KEKB e^+e^- collider, consists of 31.9 million B\bar B events. We also present branching fractions and momentum spectra for both chi_c1 and chi_c2 production.Comment: 5 pages with 2 figure

    Search for B→πℓ+ℓ−B \to \pi \ell^+\ell^- Decays at Belle

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    We present a search for the B-> pi e^+ e^- and B-> pi \mu^+ \mu^- decays, with a data sample of 657 million BBbar pairs collected with the Belle detector at the KEKB e+e−e^+e^- collider. Signal events are reconstructed from a charged or a neutral pion candidate and a pair of oppositely charged electrons or muons. No significant signal is observed and we set the upper limit on the isospin-averaged branching fraction BF(B -> \pi \ell^+\ell^-) < 6.2x10^-8 at the 90% confidence level.Comment: 8 pages, 3 figures, accepted by PRD(RC
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