43,241 research outputs found

    Vouching for Federal Education Choice: If You Pay Them, They Will Come

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    The New Sex Discrimination

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    Sex discrimination law has not kept pace with the lived experience of discrimination. In the early years of Title VII of the Civil Rights Act of 1964, courts settled on an idea of what sex discrimination looks like—formal practices that exclude employees based on their group membership. The problem is that sex discrimination has become highly individualized. Modern sex discrimination does not target all men or all women, nor does it target subgroups of men or women. The victims of modern sex discrimination are particular men and women who face discrimination because they do not or cannot conform to the norms of the workplace. These employees have been shut out of a sex discrimination regime that still expects employees to anchor their claims to a narrative of group subordination. I argue that the lived experience of discrimination should determine employment discrimination doctrine and not the other way around. Accordingly, I propose a new regime for sex discrimination law. The model for the new sex discrimination regime is religious discrimination law. Unlike other areas of employment discrimination law, religious discrimination law offers a dynamic conception of identity and a greater array of different theories of discrimination. I argue that sex discrimination law can and should work this way, too. On a broader level, the paper makes a strong normative claim about the substance of Title VII\u27s sex equality project. I argue that sex discrimination law needs to recalibrate its vision of equality. Difference is universal. No two women (or men) are the same, and this is a good thing. Thus the central task of sex discrimination law should be to better recognize—and, in turn, protect—the distinctive ways in which employees express their maleness and femaleness. It is these differences, after all, that shape the way employees experience modern sex discrimination

    Spherical Orbifolds for Cosmic Topology

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    Harmonic analysis is a tool to infer cosmic topology from the measured astrophysical cosmic microwave background CMB radiation. For overall positive curvature, Platonic spherical manifolds are candidates for this analysis. We combine the specific point symmetry of the Platonic manifolds with their deck transformations. This analysis in topology leads from manifolds to orbifolds. We discuss the deck transformations of the orbifolds and give eigenmodes for the harmonic analysis as linear combinations of Wigner polynomials on the 3-sphere. These provide new tools for detecting cosmic topology from the CMB radiation.Comment: 17 pages, 9 figures. arXiv admin note: substantial text overlap with arXiv:1011.427

    Observables in the Decays of B to Two Vector Mesons

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    In general there are nine observables in the decay of a B meson to two vector mesons defined in terms of polarization correlations of these mesons. Only six of these can be detected via the subsequent decay angular distributions because of parity conservation in those decays. The remaining three require the measurement of the spin polarization of one of the decay products.Comment: 12 pages, no figur

    Pattern Formation from Defect Chaos --- A Theory of Chevrons

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    For over 25 years it is known that the roll structure of electroconvection (EC) in the dielectric regime in planarly aligned nematic liquid crystals has, after a transition to defect chaos, the tendency to form chevron structures. We show, with the help of a coarse-grained model, that this effect can generally be expected for systems with spontaneously broken isotropy, that is lifted by a small external perturbation. The linearized model as well as a nonlinear extension are compared to simulations of a system of coupled amplitude equations which generate chevrons out of defect chaos. The mechanism of chevron formation is similar to the development of Turing patterns in reaction diffusion systems.Comment: 17 pages, Latex, 11 PS-figures, submitted to Physica

    Axial symmetry and conformal Killing vectors

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    Axisymmetric spacetimes with a conformal symmetry are studied and it is shown that, if there is no further conformal symmetry, the axial Killing vector and the conformal Killing vector must commute. As a direct consequence, in conformally stationary and axisymmetric spacetimes, no restriction is made by assuming that the axial symmetry and the conformal timelike symmetry commute. Furthermore, we prove that in axisymmetric spacetimes with another symmetry (such as stationary and axisymmetric or cylindrically symmetric spacetimes) and a conformal symmetry, the commutator of the axial Killing vector with the two others mush vanish or else the symmetry is larger than that originally considered. The results are completely general and do not depend on Einstein's equations or any particular matter content.Comment: 15 pages, Latex, no figure

    Fine-grain process modelling

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    In this paper, we propose the use of fine-grain process modelling as an aid to software development. We suggest the use of two levels of granularity, one at the level of the individual developer and another at the level of the representation scheme used by that developer. The advantages of modelling the software development process at these two levels, we argue, include respectively: (1) the production of models that better reflect actual development processes because they are oriented towards the actors who enact them, and (2) models that are vehicles for providing guidance because they may be expressed in terms of the actual representation schemes employed by those actors. We suggest that our previously published approach of using multiple “ViewPoints” to model software development participants, the perspectives that they hold, the representation schemes that they deploy and the process models that they maintain, is one way of supporting the fine-grain modelling we advocate. We point to some simple, tool-based experiments we have performed that support our proposition
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