The iconography of nationalism: icons, popular culture, and American nationalism

The Iconography of Nationalism: Icons, Popular Culture, and American Nationalism develops a model of cultural icons, defining icons as highly visible, culturally variable, and overdetermined auratic images. Situating icons within the context of mass reproduction technologies and American nationalism, this study seeks to demystify the simple images presented by infantile, national, and scapegoat icons in literature, film, and political rhetoric. This dissertation argues that icons participate in the American nationalist project by channeling citizens’ political and patriotic feelings through seemingly simple images. While acknowledging that icons are necessary to construct what Benedict Anderson calls “the imagined community” of the nation, this study complicates a quick and easy reading of an icon’s manifest content and uses narrative to reveal the latent content in images like Marilyn Monroe, Barbie, Mickey Mouse, Elvis Presley, Pocahontas, Uncle Sam, Big Brother, and Adolf Hitler

The effects of temperature and rf power level on the tuning of the water-cooled SSC Low-Energy Booster cavity

The SSC Low-Energy Booster (LEB) cavity must rapidly tune from 47.52 to 59.78 MHz. The cavity tuner will use transversely biased ferrite control of the cavity resonance. The thermal expansion of a cavity's materials affects its resonance. There are two other known temperature mechanisms that affect resonance in the water-cooled LEB cavity. The saturation magnetization of the ferrite is a function of temperature, and since the ferrite permeability is dependent on the saturation magnetization, the ferrite permeability is also temperature dependent. The ferrite cooling water is present in the tuner rf field, hence the water permittivity, which is very temperature dependent, also affects cavity resonance. While taking data on the SSC Test Cavity to quantify the effect of temperature on the resonance, we observed that the rf power level also perturbed the resonance. It was readily apparent from the data that the power level affected the resonance much more strongly at low values of control bias than at high values. In fact, when we calculate an apparent modified control-bias H field that produces the observed resonance shift, we noticed an almost perfect, though non-linear, correlation between the ratio of H[sub rf] to H[sub bias] and the apparent modified bias field, H[sub app]. This paper will present a set of equations to predict the resonance shifts produced by changes in temperature and rf power level. It will also present the techniques, both theoretical and empirical, by which these equations are derived. Finally, some of the methods for dealing with these resonance shifts will be discussed