107 research outputs found

    ILR Impact Brief - Deconstructing Absenteeism: Satisfaction, Commitment, and Unemployment

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    [Excerpt] Group attitudes about satisfaction and commitment are negatively associated with absenteeism and interact in predicting absenteeism at the unit level. The effects are particularly strong in areas where jobs are plentiful but fade away where jobs are scarce. In other words, higher levels of absenteeism in a work group are associated with lower levels of job satisfaction and organizational commitment in labor markets with low unemployment, and vice versa. Organizational commitment is the crucial factor: absenteeism is higher in work units with low levels of commitment regardless of the level of satisfaction. Group norms about absenteeism and other contextual factors, such as work processes, contribute to the variance among work units. Satisfaction and commitment are not related to changes in absenteeism over time

    Spectrum and thermodynamic properties of two-dimensional N=(1,1) super Yang-Mills theory with fundamental matter and a Chern-Simons term

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    We consider N=(1,1) super Yang-Mills theory in 1+1 dimensions with fundamentals at large-N_c. A Chern-Simons term is included to give mass to the adjoint partons. Using the spectrum of the theory, we calculate thermodynamic properties of the system as a function of the temperature and the Yang-Mills coupling. In the large-N_c limit there are two non-communicating sectors, the glueball sector, which we presented previously, and the meson-like sector that we present here. We find that the meson-like sector dominates the thermodynamics. Like the glueball sector, the meson sector has a Hagedorn temperature T_H, and we show that the Hagedorn temperature grows with the coupling. We calculate the temperature and coupling dependence of the free energy for temperatures below T_H. As expected, the free energy for weak coupling and low temperature grows quadratically with the temperature. Also the ratio of the free energies at strong coupling compared to weak coupling, r_{s-w}, for low temperatures grows quadratically with T. In addition, our data suggest that r_{s-w} tends to zero in the continuum limit at low temperatures.Comment: 34 p

    Direct evidence for the Maldacena conjecture for N=(8,8) super Yang-Mills theory in 1+1 dimensions

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    We solve N=(8,8) super Yang-Mills theory in 1+1 dimensions at strong coupling to directly confirm the predictions of supergravity at weak coupling. We do our calculations in the large-N_c approximation using Supersymmetric Discrete Light-Cone Quantization with up to 3*10^{12} basis states. We calculate the stress-energy correlator as a function of the separation r and find that at intermediate values of r the correlator behaves as r^{-5} to within errors as predicted by weak-coupling supergravity. We also present an extension to significantly higher resolution of our earlier results for the same correlator in the N=(2,2) theory and see that in this theory the correlator has very different behavior at intermediate values of r.Comment: 12 pp., 6 figures, LaTe

    Leadership Competency Builder

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    The Leadership Competency Builder© was built on an extensive literature review of top-tier academic research on leadership up to mid-2015, conducted by a team of researchers at the FIU Center for Leadership. This list of 45 leadership competencies was then thematically categorized into 5 “meta-competencies”: Leading Self, Proving Strategic Focus, Connecting with Others, Leading Others, and Delivering Results. This tool can help organizations by making evidence-based research more accessible and applicable. Once critical competency gaps are identified, organizations can then take the necessary steps to develop those competencies to their full potential

    N=(1,1) super Yang--Mills theory in 1+1 dimensions at finite temperature

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    We present a formulation of N=(1,1) super Yang-Mills theory in 1+1 dimensions at finite temperature. The partition function is constructed by finding a numerical approximation to the entire spectrum. We solve numerically for the spectrum using Supersymmetric Discrete Light-Cone Quantization (SDLCQ) in the large-N_c approximation and calculate the density of states. We find that the density of states grows exponentially and the theory has a Hagedorn temperature, which we extract. We find that the Hagedorn temperature at infinite resolution is slightly less than one in units of (g^(2) N_c/pi)^(1/2). We use the density of states to also calculate a standard set of thermodynamic functions below the Hagedorn temperature. In this temperature range, we find that the thermodynamics is dominated by the massless states of the theory.Comment: 16 pages, 8 eps figures, LaTe

    Sex differences in pre-diagnosis concerns for children later diagnosed with autism spectrum disorder

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    In the absence of intellectual impairment, girls are diagnosed with autism spectrum disorder significantly less and later than boys. This study explored potential reasons for why autism spectrum disorder may be more difficult to identify in girls, based on carer concerns during the pre-diagnosis period. Carers of 92 boys and 60 girls diagnosed with autism spectrum disorder from school age completed an online survey addressing concerns regarding the child’s development during the pre-school years (pre-diagnosis). Significant sex differences were evident in key early concerns, as well as the strategies used to navigate pre-school social situations, and the types of restricted interests. Findings suggest, from carer perspective, that girls who went on to be diagnosed with autism spectrum disorder presented differently when compared to boys, providing insight into why the diagnosis of autism spectrum disorder may be more difficult to make with cognitively able girls. </jats:p

    Improved results for N=(2,2) super Yang-Mills theory using supersymmetric discrete light-cone quantization

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    We consider the (1+1)-dimensional N=(2,2){\cal N}=(2,2) super Yang--Mills theory which is obtained by dimensionally reducing N=1{\cal N}=1 super Yang--Mills theory in four dimension to two dimensions. We do our calculations in the large-NcN_c approximation using Supersymmetric Discrete Light Cone Quantization. The objective is to calculate quantities that might be investigated by researchers using other numerical methods. We present a precision study of the low-mass spectrum and the stress-energy correlator . We find that the mass gap of this theory closes as the numerical resolution goes to infinity and that the correlator in the intermediate rr region behaves like r4.75r^{-4.75}.Comment: 18 pages, 8 figure

    The validity and scalability of the theory-of-mind scale with toddlers and pre-schoolers

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    Despite the importance of theory of mind (ToM) for typical development, there remain two key issues affecting our ability to draw robust conclusions. One is the continued focus on false-belief as the sole measure of ToM. The second is the lack of empirically validated measures of ToM as a broad construct. Our key aim was to examine the validity and reliability of the five-item ToM scale (Peterson, Wellman, &amp; Lui, 2005). In particular, we extended on previous research of this scale by assessing its scalability and validity for use with children from two years of age. Sixty-eight typically developing children (aged 24 to 61 months) were assessed on the scale’s five tasks, along with a sixth Sally-Anne false-belief task. Our data replicated the scalability of the five tasks for a Rasch- but not Guttman-scale. Guttman analysis showed a four-item scale may be more suitable for this age range. Further, the tasks showed good internal consistency and validity for use with children as young as two years of age. Overall, the measure provides a valid and reliable tool for the assessment of ToM, and in particular the longitudinal assessment of this ability as a construct
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