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RISS 인기검색어
- 검색키워드
- 저자 : Boehm, Kurt (검색결과 19 건)
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Civility in Libraries: A Study of Merged Departments, Role Conflict and Civility
Boehme, Andrea Indiana State University ProQuest Dissertations & 2020 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
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Rereading and Rewriting Teachers' Stories of Felt Impossibilities
Boehm-Turner, Abigail E ProQuest Dissertations & Theses University of Minn 2020 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
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Numerical and experimental studies of IFE target layering in a cryogenic fluidized bed
Boehm, Kurt Julian University of California, San Diego 2009 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
The redistribution of deuterium (DD) or a deuterium-tritium mixture (DT) to form a layer on the inside of spherical inertial fusion energy (IFE) capsules is a challenging problem because of the symmetry requirements of the fuel layer thickness, the smoothness requirement of the outside target surface, the number of targets required, and the time restriction on the production process. Several physical processes have been identified to interact with each other to influence the outcome of the layering process in a fluidized bed. These include the gas-flow-speed-dependent movement of unbalanced spheres through a fluidized bed and the resulting local heat transfer coefficient on the target surface from the cooling gas. The mass redistribution speed of the fuel inside the shell towards a uniform layer and the final layer thickness uniformity depend on the variation in time-averaged local heat transfer coefficient along the outer target surface. While a high gas flow rate through the bed would lead to more uniform time-averaged heat transfer coefficients, the high-Z layer covering the outer target surface has been observed to deteriorate through collisions at high impact velocities which occur during fluidization at high bed expansions. The focus of this work was to develop numerical tools to help model and understand the physics involved in the fluidized bed layering and to assess the influence of key parameters on the layering outcome. Two separate models have been developed independently for particle behavior in a fluidized bed and for the coupled mass and heat transfer processes governing the layering process; these models include unique boundary conditions, beyond the capability of currently found commercial software. The models were validated through comparison with theoretical results and laboratory-scale experiments. They were then combined to model the entire layering process and used for parametric analyses. From these analyses, a window of operating parameters was identified at which a prototypic layering experiment is likely to be successful.
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Boehme, Eric Russell Rutgers The State University of New Jersey - New B 2005 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
America's commitment to the egalitarian norms of liberty, equality and democracy, conflict with the inequality and stratification derived from capitalism, ascriptive hierarchies and anti-state individualism. Together these conflicting norms of freedom, equality, and inequality are filtered through the rights, entitlements, and obligations of citizenship. Citizenship is often thought of as a condition that universalizes individuals, giving citizens equal procedural and substantive rights and protections by and from the state. Yet historically in America, citizenship has done much to harm groups with unequal access to the rights and protections of citizens. Citizenship in the U.S. has been paradoxical, on the one hand promoting inclusion, liberty, and equality of opportunity for white males, on the other grounded in the oppression, exclusion, coercion, slavery, and violence of groups marginalized because of their race or ethnicity, sex, or class. Recognizing the identities, rights and properties of certain persons in the polity also meant withholding these same rights and protections from groups excluded or marginalized. The ascriptive status of race, ethnicity and sex, isolated these groups from the rights and protections of citizenship as well as the spaces where the activities proper to citizens were enacted. Citizenship ensured that property ownership, voting, and later free earning were protected for white males. However, over time, the inequality of protecting property, voting and earning as the substantive entitlements of citizenship for white males, harmed, on a systemic and institutional level, the life chances, the material well-being, and the psychological dignity of women and people of color in the U.S.
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Organizational Domains Influencing Interprofessional Protocol Implementation in Intensive Care
Boehm, Leanne Marie Vanderbilt University 2016 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
Abstract not available.
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Tropical convections role in tropical tropopause cirrus
Boehm, Matthew Todd The Pennsylvania State University 2001 해외박사(DDOD)
소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
Thin cirrus layers are frequently observed near the tropical cold-point tropopause. This work shows that tropical convection plays a role in all aspects of the formation of these tropopause cirrus layers. Deep tropical convection is the primary moisture source for tropopause cirrus. It transports moisture from the warm and moist tropical surface into the upper troposphere, where it is detrained into cirrus anvils. Because tropical convection is capped 2–4 km below the cold-point tropopause in most regions, the <italic>in situ</italic> formation of tropopause cirrus near the equatorial cold-point tropopause generally requires the transport of moisture into this region. It is shown that an important source of this moisture transport is the meridional circulation that forms in the tropical tropopause transition layer (TTL) in response to eddy momentum flux convergence produced in the tropics by Rossby waves generated by tropical convection. This circulation transports moisture horizontally from the intertropical convergence zone, where it is detrained from convection, to the equator; and vertically from near the base of the TTL to the cold-point tropopause, where tropical tropopause cirrus is observed. Once moisture is present at the cold-point tropopause, cooling is required to initiate tropopause cirrus formation. Using data from the Nauru99 field experiment, it is shown that stratospheric Kelvin waves excited by tropical convection are an important source of this cooling. In particular, tropopause cirrus forms in the cold phases of Kelvin waves as they descend from the lower stratosphere, across the cold-point tropopause, and into the upper portion of the TTL. The data support the hypothesis that cooling associated with Kelvin waves and the resulting tropopause cirrus play an important role in the dehydration of air ascending into the lower stratosphere.
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