Radiant heating simulation final report

Radiant heating simulation - radiant heat inputs for manned missions, flight parameters, and radiation source evaluatio

Prediction Analysis and Management Decisions

The dynamic nature of the Apollo Program, with its many complexities, demands tomorrow 1 s answers today. To meet this need and provide decision bases upon which to act, the Apollo Program Control Directorate of NASA Headquarters has under continuous development rigorous prediction analysis techniques necessary to the detection of potential weaknesses before they become critical. This work is presently pointed toward predictions of space vehicle weight and performance as related to schedules, cost, and reliability. The prediction analysis technique described here combines applicable domains of classical statistical methods, relevancy devices, mathematical modeling, management decision criteria, electronic computer usage, hardware trade-off and error analyses. The techniques developed are not a cure-all, but do provide engineering and program managers that data necessary to pin-point critical issues, define courses of action and thereby factually support technical and management judgements

"Hearts of Flesh:" Collective Identity and the Body in the Book of Ezekiel

The book of Ezekiel bears witness to one of the most critical periods for Judean identity formation: the sixth-century BCE forced migrations to Babylonia. It contains an ideology of collective identity which sets the Judean forced migrants apart from the foreign nations surrounding them as well as from the Judeans who remained in Judah. Previous scholarship has tended to emphasize the rhetorical context of one or the other of these outside groups instead of recognizing the significance of both. Meanwhile, social scientific research into collective identities has shown that they are continually reproduced through social interactions in the material world. Individual bodies are the primary sites of identity expression through activities such as bodily modifications, speech, and other behaviours. An ideology of collective identity outlined in a text must have the capacity to be enacted through the body if it is to be effective. This material aspect of ideology is rarely acknowledged in biblical studies, and the book of Ezekiel is no exception. Therefore, the current project addresses Ezekiel’s approach to the collective identity of the forced migrant Judeans in relation to all proximate external groups, paying especial attention to the way he utilizes bodily symbols of identity. Examining Ezekiel’s ideology in this way reveals that he seeks to construct the boundaries of his community by “othering” the practices of foreigners and of the Judeans remaining in Judah. By evoking practices connected with the body in particular, Ezekiel creates an impression of bodies which are inherently different from those of his designated in-group. In so doing, he forms a new ethnic identity for the forced migrant Judeans. Additionally, by describing bodily practices within his own community, Ezekiel reveals his idealized structure of society in terms of gender stratification and religious hierarchy. Studying the bodily practices mentioned in the book of Ezekiel helps to explain not only the writer’s ideology of group identity but also why it was evidently effective, given the survival of a distinct Judean community in Babylonia. These discoveries contribute to both a synchronic and diachronic understanding of some of the key developments in Judean collective identity

Non-abelian Harmonic Oscillators and Chiral Theories

We show that a large class of physical theories which has been under intensive investigation recently, share the same geometric features in their Hamiltonian formulation. These dynamical systems range from harmonic oscillations to WZW-like models and to the KdV dynamics on $Diff_oS^1$. To the same class belong also the Hamiltonian systems on groups of maps. The common feature of these models are the 'chiral' equations of motion allowing for so-called chiral decomposition of the phase space.Comment: 1