32 research outputs found

    Nuclear Level Density and the Determination of Thermonuclear Rates for Astrophysics

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    The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. We discuss the model mostly employed for such calculations: the statistical model (Hauser-Feshbach). Special emphasis is put on the uncertainties arising from nuclear level density descriptions and an improved global description is presented. Furthermore, criteria for the applicability of the statistical model are investigated and a "map" for the applicability of the model to reactions of stable and unstable nuclei with neutral and charged particles is given.Comment: REVTeX paper + 7 B/W figures + 2 color figures; PRC, in press. Also available at http://quasar.physik.unibas.ch/preps.htm

    Beyond School-to-Prison Pipeline and Toward an Educational and Penal Realism

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    Much scholarly attention has been paid to the school-to-prison pipeline and the sanitized discourse of “death by education,” called the achievement gap. Additionally, there exists a longstanding discourse surrounding the alleged crisis of educational failure. This article offers no solutions to the crisis and suggests instead that the system is functioning as it was intended—to disenfranchise many (predominately people of color) for the benefit of some (mostly white), based on economic principals of the free market. We begin by tracing the economic interests of prisons and the prison industrial complex, juxtaposing considerations of what we call the “educational reform industrial complex.” With a baseline in the economic interests of school failure and prison proliferation, we draw on the critical race theory concept of racial realism, to work toward a theory of educational and penal realism. Specifically, we outline seven working tenets of educational and penal realism that provide promise in redirecting the discourse about schools and prisons empowering those interested in critically engaging issues of racism that permeate U.S. orientations to education and justice
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