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Award ID contains: 1905474

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  1. Simonetta Liutti (Ed.)
    The words “glass ceiling” have long described the barrier preventing women and other minority populations from being promoted to top tier positions in their professions. The 1400 Degrees Initiative, which borrows its name from the typical melting temperature of glass, takes a multifaceted approach to the issue of gender equity in physics and astronomy. 
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  2. Graves, A.L. (Ed.)
    This article describes the disparities, by gender, in ability to produce research in physics during the Covid pandemic. Data from the APS Office of Governmental affairs sheds light on the particular burden placed on experimentalists and early career women. An annotated list of references is included. 
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  3. null (Ed.)
    Simulations are used to find the zero temperature jamming threshold, ϕ j , for soft, bidisperse disks in the presence of small fixed particles, or “pins”, arranged in a lattice. The presence of pins leads, as one expects, to a decrease in ϕ j . Structural properties of the system near the jamming threshold are calculated as a function of the pin density. While the correlation length exponent remains ν = 1/2 at low pin densities, the system is mechanically stable with more bonds, yet fewer contacts than the Maxwell criterion implies in the absence of pins. In addition, as pin density increases, novel bond orientational order and long-range spatial order appear, which are correlated with the square symmetry of the pin lattice. 
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