This study explores the aspirations of undocumented youth seeking to defer deportation from the United States and obtain temporary employment authorization through Deferred Action for Childhood Arrivals (DACA). The data are twenty-three letters submitted from 2013–2015 to a nonprofit foundation in the US Southwest that provides financial assistance to pay DACA application fees. Conducted within a narrative framework, analysis of emergent themes reveals a story of hope and family that counters the dominant political story of fear and threat to public safety. Specifically, from the DACA applicant’s standpoint, family is their most valuable form of social capital and by providing the means for employment and the education needed to launch a sustainable career, DACA status provides the leverage required to maximize family capital. Our analysis reveals a disturbing disjuncture between their testimonios and the realities of a policy intended to serve as a safety net. The current political climate makes aspirations like theirs increasingly difficult to achieve and may actually exacerbate legal and social liminality.
The stacked Blumlein line is a concept that has been touted as a highly compact pulsed power system because it combines the functions of energy storage, voltage scaling, and pulse shaping into a single sub-system. As a result, two single stage Blumlein lines have been fabricated and tested using a polymer-ceramic composite dielectric.Examination of the breakdown of the dielectric near the DC voltage specification led to the understanding of the degree of voltage reversal experienced by the lines.Voltage reversal is compounded in a stacked arrangement. The voltage reversal and transients induced by the switch jitter in a stacked configuration require significant derating of the dielectric strength. Consequently, the system must be operated much below the intrinsic dielectric energy density, compromising efforts to design a compact pulsed power system. This paper presents the conclusion that for derating below 0.72, as is likely necessary, a stacked Blumlein line will contain more dielectric than a comparable stacked transmission line.
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