1,132 research outputs found

    Adiabatic projection method for scattering and reactions on the lattice

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    We demonstrate and test the adiabatic projection method, a general new framework for calculating scattering and reactions on the lattice. The method is based upon calculating a low-energy effective theory for clusters which becomes exact in the limit of large Euclidean projection time. As a detailed example we calculate the adiabatic two-body Hamiltonian for elastic fermion-dimer scattering in lattice effective field theory. Our calculation corresponds to neutron-deuteron scattering in the spin-quartet channel at leading order in pionless effective field theory. We show that the spectrum of the adiabatic Hamiltonian reproduces the spectrum of the original Hamiltonian below the inelastic threshold to arbitrary accuracy. We also show that the calculated s-wave phase shift reproduces the known exact result in the continuum and infinite-volume limits. When extended to more than one scattering channel, the adiabatic projection method can be used to calculate inelastic reactions on the lattice in future work.Comment: 17 pages, 4 figures, version to appear in Eur. Phys. J.

    Simulacra Of The (un)real: Reading Margaret Atwood’s Lady Oracle As A Feminist Text Of Bodily Resistance

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    This thesis project is centered on the female body, specifically body image, in relation to Western, cultural images of women. This is a problem that has been around, essentially, since the beginning of Western art. While different scholars argue whether or not this problem has become worse, it is nonetheless problematic that we are still, in 2018, fighting patriarchy’s control of our bodies via body image. Grounding my project in Susan Bordo’s 1993 text Unbearable Weight: Feminism, Western Culture, and the Body, this thesis explores Bordo’s argument that the female body is culturally produced through the lens of Jean Baudrillard’s theory of simulation and simulacra. Reading Bordo via Baudrillard allows us to explore this age-old problem at a new angle, giving us new reasons that explain why we are still stuck in patriarchy’s chains. Through this lens, I demonstrate how and why Third-wave feminist activism (I focus specifically on the Body Positive Movement) is failing in their attempts to reclaim the female body: the issue lies within Third-wave activism’s desire to portray othered bodies as beautiful and desirable. This becomes problematic in the era of simulacra: abject bodies do not resemble the (un)real ideal so they become “unreal” in the eyes of society. This attempt to represent abject bodies (obese, racialized, trans, disabled) as beautiful results in stigmatization and disgust towards said bodies, and thus the Body Positive Movement leaves out abject bodies because these abject bodies cannot be seen as beautiful in a society that deems them unreal. I argue that in order to reclaim the female body, we must first reclaim the mind side of the mind/body dualism before we can successfully reclaim our bodies. To demonstrate how this is possible, I use Margaret Atwood’s novel Lady Oracle as a case study that not only shows how the female body is culturally produced in the era of simulacra, but also allows us to see how reclaiming the mind side of the binary does allow the protagonist, Joan, to reclaim her past and body as her own, without shame. It is through fiction that reality is represented, and I conclude my thesis with my own personal anecdotes, showing how resistance via fiction can transcend into real life and point to a new, hopeful future

    To Log or Not to Log: Bootstrap as an Alternative to the Parametric Estimation of Moderation Effects in the Presence of Skewed Dependent Variables

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    When gross deviations from parametric assumptions are observed, conventional data transformations are often applied with little regard for substantive theoretical implications. One such transformation involves using the logarithm of positively skewed dependent variables. Log transformations were shown to severely decrease estimates of true moderator effects using moderated regression procedures in a Monte Carlo simulation. Estimates of moderator effect sizes were substantially better estimates of the true latent moderator effect (i.e., larger by a multiple of 2.6 to 534) when estimated using a simple percentile bootstrap procedure in the original, positively skewed data. Conclusions with regard to the presence or absence of a true moderator effect using a simple bootstrap procedure were unaffected by the violation of parametric assumptions in the original, positively skewed data. In contrast, moderated regression analysis performed on a log-transformed dependent variable severely increased Type-II error. Implications are drawn for applied psychological and management research.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline

    A Review of Research Studying Film and Television Representations of ASD

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    An increasing number of characters with autism spectrum disorder (ASD) are appearing in film and television, leading to increased public perceptions of ASD. This review examined the current state of research focused on ASD representations in film and television, and the extent to which characterizations of ASD have been studied. Eighty-seven characters with ASD were discussed across the 26 articles. Characters were culturally and linguistically diverse, and portrayals of ASD appear to be moving away from typical disability-tropes. Researchers studying ASD portrayals were also culturally and academically diverse, with the majority representing fields outside of traditional ASD research disciplines. Connecting diverse methodological procedures may be a useful next-step to enhance empirical studies of ASD representations.publishedVersio

    Work group inclusion : test of a scale and model

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    We develop a theoretically based 10-item measure of work group inclusion comprised of two components (belongingness and uniqueness) and use this measure to empirically test the nomological network of work group inclusion developed by Shore et al. In Phase 1, we use two samples of full-time employees to develop and refine items as well as establish content validity. In Phase 2, we demonstrate convergent, discriminant, and incremental validity with both conceptually related and unrelated constructs. In Phase 3, we use data from an additional sample of employees and supervisors to test criterion-related validity and mediation by examining the multilevel relationships between inclusion and important antecedents and outcomes. Across the three phases of our study, the results demonstrate support not only for the factor structure, reliability, and validity of our work group inclusion measure but also for a theoretical model in which the construct of inclusion has important implications for individuals and organizations

    Opium Alkaloids in Harvested and Thermally Processed Poppy Seeds

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    The opium alkaloids (morphine, codeine, thebaine, noscapine, and papaverine) have been detected on poppy seeds; they are widely used by the food industry for decoration and flavor but can introduce opium alkaloids into the food chain. Of the opium alkaloids found on poppy seeds, morphine, and codeine are the most pharmacologically active and have been detected in biological matrices collected in workplace and roadside drug testing resulting in positive opiate results. The European Food Safety Authority introduced an acute reference dose of 10 ÎŒg morphine/kg of body weight as a safe level for morphine in food products. In this work, it was found that in harvested poppy seeds, and thermally processed poppy seeds (with and without a food matrix), if used in normal levels would not exceed the recommended acute reference dose. It was also shown that the levels of all alkaloids reduce when thermally processed, in comparison with harvested, untreated seeds

    Effects of Low-Energy X-rays and UV Radiation on Fibroblast Cells

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    https://tigerprints.clemson.edu/csrp/1003/thumbnail.jp

    Inclusive leadership : realizing positive outcomes through belongingness and being valued for uniqueness

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    We introduce a theoretically-grounded conceptualization of inclusive leadership and present a framework for understanding factors that contribute to and follow from inclusive leadership within work groups. We conceptualize inclusive leadership as a set of positive leader behaviors that facilitate group members perceiving belongingness in the work group while maintaining their uniqueness within the group as they fully contribute to group processes and outcomes. We propose that leader pro-diversity beliefs, humility, and cognitive complexity increase the propensity of inclusive leader behaviors. We identify five categories of inclusive leadership behaviors that facilitate group members' perceptions of inclusion, which in turn lead to member work group identification, psychological empowerment, and behavioral outcomes (creativity, job performance, and reduced turnover) in the pursuit of group goals. This framework provides theoretical grounding for the construct of inclusive leadership while advancing our understanding of how leaders can increase diverse work group effectiveness

    On Biodata Construct Validity, Criterion-Related Validity, and Adverse Impact.

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    This study examined the personnel selection technique of biographical information (biodata) in terms of theory, criterion-related validity, and adverse impact. First, the construct validity of biodata was examined to determine if biodata theory was useful in explaining biodata\u27s strong criterion validity. Items from an existing biodata inventory were mapped onto construct domains drawn from Mumford, Stokes, and Owens\u27 (1990) ecology model. Relationships between subjects\u27 biodata responses and training performance was examined for consistency with the model\u27s predictions in an organizational sample. The ecology model did not fit the data well. Follow up exploratory analyses did yield good fit when the model was extended by grouping construct domains within developmental time periods. Second, biodata was examined in terms of simple and incremental criterion-related validity relative to a general cognitive ability test. The biodata instrument was also investigated in terms of incremental criterion validity of biodata predictor scales used in combination with a general cognitive ability, or g, test. Predictor scales consisted of all biodata response options, g-loaded response options, and non-g-loaded response options, respectively. The biodata scale (including all biodata items) outperformed the general cognitive ability test both individually and incrementally (both before and after correcting for the effect of range restriction due to selection on g). The biodata g and non-g item sub-scales slightly outperformed the test of general cognitive ability. Finally, biodata adverse impact was assessed in two ways. First, individual biodata response options were examined for possible adverse impact. Second, separate biodata scales including and excluding adverse impact response options and a test of general cognitive ability were compared in terms of adverse impact. Eliminating response options that violated the four-fifths rule resulted in a relatively large decline in the standardized mean difference between subgroups, no appreciable decrease in biodata criterion-related validity, and minimal adverse impact relative to both the biodata scale containing all response options and the general cognitive ability measure. Research findings are discussed and implications for theory, future research, and practice are offered
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