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This thesis by Cole Johnston brings novel insights into the inner workings of young massive stars. By bridging the observational fields of binary stars and asteroseismology this thesis uses state of the art statistical techniques to scrutinise theories of modern stellar astrophysics. Developing upon the commonly used isochrone fitting methodology, the author introduces the idea of isochrone cloud fitting in order to account for the full breadth of physics observed in stars. The author combines this methodology with gravity mode asteroseismic analysis to asses the level of chemical mixing deep within the stellar core in order to determine the star‘s age and core mass. Wrapped into a robust statistical framework to account for correlations, this methodology is employed to analyse individual stars, multiple systems, and clusters alike to demonstrate that chemical mixing has dramatic impact on stellar structure and evolution.
In this long-term community study of the freedom movement in rural, majority-black Claiborne County, Mississippi, Emilye Crosby explores the impact of the African American freedom struggle on small communities in general and questions common assumptions that are based on the national movement. The legal successes at the national level in the mid 1960s did not end the movement, Crosby contends, but rather emboldened people across the South to initiate waves of new actions around local issues. Escalating assertiveness and demands of African Americans--including the reality of armed self-defense--were critical to ensuring meaningful local change to a remarkably resilient system of white suprema...
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The recently-adopted OECD convention outlawing bribery of foreign public officials is welcome evidence of how much progress has been made in the battle against corruption. The financial crisis in East Asia is an indication of how much remains to be done. Corruption is by no means a new issue but it has only recently emerged as a global issue. With the end of the Cold War, the pace and breadth of the trends toward democratization and international economic integration accelerated and expanded globally. Yet corruption could slow or even reverse these trends, potentially threatening economic development and political stability in some countries. As the global implications of corruption have gro...
Reprint of the original, first published in 1881.