29 research outputs found

    Boundary Conditions: Looking Without Seeing

    Get PDF
    Investigation of the basis for prevailing attitudes towards vulnerable populations within the context of the global refugee crisis occurring in the mid to late 2010's. The formal, conceptual, cultural, and material concerns considered in the creation of the art work There, There (Culling Comfort) and how these attributes reflect contemporary and historical attitudes as viewed through the lens of personal experience are examined. A range of strategies contemporary artists have employed to engage with related issues to achieve similar ends are also explored.No embargoAcademic Major: Ar

    Magnetic flux in the inter-network quiet Sun from comparison with numerical simulations

    Full text link
    Khomenko et al. estimate the mean magnetic field strength of the quiet Sun to be 20 G. The figure is smaller than several existing estimates, and it comes from the comparison between observed Zeeman polarization signals and synthetic signals from numerical simulations of magneto-convection. The numerical simulations require an artificially large magnetic diffusivity, which smears out magnetic structures smaller than the grid scale. Assuming a turbulent cascade for the unresolved artificially smeared magnetic fields, we find that their unsigned magnetic flux is at least as important as that explicitly shown in the simulation. The unresolved fields do not produce Zeeman polarization but contribute to the unsigned flux.Since they are not considered by Khomenko et al., their mean magnetic field strength has to be regarded as a lower limit. This kind of bias is not specific of a particular numerical simulation or a spectral line. It is to be expected when observed quiet Sun Zeeman signals are compared with synthetic signals from simulations.Comment: Accepted A&A. 4 pages, 0 figure

    THEORY OF ARC CLOGGING IN NOZZLES

    No full text
    No abstract availabl

    Numerical Simulation of Unsteady Phenomena in an Electrothermal Pulsed Plasma Thruster

    No full text
    corecore