Browsing by Subject "Segregation"
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Item Analysis of Impediments to Fair Housing Choice in the City of Minneapolis.(1996) Nalezny, KristanItem Analyzing Impediments of Fair Housing Choice in Hennepin County, MN: A Resource Inventory.(1995) Stahl, Joseph GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisner. Report No. 3: Baseline Data Analysis for North Side Redevelopment.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2001) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros, Reports 1-8.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2002) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 1: Policy Context and Previous Research on Housing Dispersal.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2002) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 2: Planning for North Side Redevelopment.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2002) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 5: Relocation of Residents from North Side Public Housing.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2001) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 6: The Experiences of Dispersed Families.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2002) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 7: Mobility Certificates.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2001) Goetz, Edward GItem Deconcentrating Poverty in Minneapolis: Hollman v. Cisneros. Report No. 8: Replacement Housing.(Minneapolis: Center for Urban and Regional Affairs (CURA), 2001) Goetz, Edward GItem Interview with Zev Aelony(University of Minnesota, 1999-11-22) Aelony, Zev; Pflaum, Ann M.Ann Pflaum interviews Zev Aelony, one of the organizers of the student group called Students for Integration.Item Shear-induced segregation in dense granular mixtures.(2011-06) Fan, YiGranular mixtures such as sand and powders tend to segregate or unmix by particle property. The details are important for many natural and industrial applications. While kinetic theory provides a mechanistic framework for modeling segregation in energetically agitated granular mixtures, there is no analogous framework for dense sheared granular mixtures. A number of segregation mechanisms have been identified as important, including those associated with pressure gradients, gravity, gradients in shear rates, and gradients in granular temperature --- the kinetic energy of velocity fluctuations. All likely contribute to segregation in densely sheared systems, though there is no constitutive relationship for mixtures, and the details are difficult to determine. Further, in typical experimental systems designed to study segregation in dense granular flow (such as chutes and rotated drums), gravity, velocity gradients, and porosity gradients coexist in the direction of segregation. The research in this thesis uses physical and computational experiments to elucidate particular segregation mechanisms in dense granular flow and develop a theoretical model incorporating these segregation mechanisms. Experiments are conducted in a relatively new geometric configuration called split-bottom cell which can isolate shear rate and porosity gradients from gravity. Distinct Element Method (DEM) simulations of experiments in this geometry and in a chute flow provide details inaccessible experimentally including particle concentrations and velocities at every point in space and interparticle forces. These simulations reveal unique dynamics associated with shear-induced segregation in dense systems. Based on the results, a theoretical framework is developed to model segregation associated with shear gradients in dense sheared granular mixtures.Item Stress-driven melt redistribution in partially molten rocks deformed in torsion: from pressure shadows to base-state segregation(2014-10) Qi, ChaoThe redistribution of melt in partially molten rocks during deformation plays an important role in the evolution and dynamics of Earth's mantle. Previous studies discovered different scales of melt redistribution: melt alignment and melt segregation to form melt-enriched bands , both of which have demonstrated their importance to the deformation of the mantle. In this dissertation, two new forms of stress-driven melt redistribution in deformed partially molten rocks are produced: a formation of pressure shadows around rigid particles and a large-scale, base-state melt segregation. For pressure shadows, observations on the microstructure around the rigid particles revealed the melt distribution and solid flow field, which will provide a constraint on the bulk viscosity of the partially molten rock, if associated with theoretical studies. The presence of base-state melt segregation validated a hypothesis of viscous anisotropy, which provides explanations for melt segregation processes and will cause a significant impact to the dynamic of the mantle. Therefore, the studies of stress-driven melt redistribution in this dissertation are of great significance that will influence the future studies of Earth's mantle.Item The Total Train System: Technology and Progressivism in Late Nineteenth and Early Twentieth-Century American Literature(2017-05) McCulloch, StephenThis dissertation traces two connected stories through the literary imagination of four American authors: William Dean Howells, Charles W. Chesnutt, Henry Adams, and James Weldon Johnson. Firstly, this dissertation examines the ideological role the expansion and ossification of the railway played in the development of American progressivism in the final decades of the nineteenth century and the first decades of the twentieth. I argue that the logic of the railway provided American writers with a new vocabulary through which to describe the abstract development of American history. Whereas in the eighteenth century, historical progress was conceived of as a course of human events, with the advent of the railway system, many began to imagine historical movement as a result of scientific certainties managed and developed by humans who conceived of themselves as not directly in control of those movements. By the twentieth century, the railway became what Henry Adams called an “Empire of Coal,” a material system of exchanges that spanned to globe and whose logic determined the moving limit of possibility for all civilization. Secondly, my dissertation tells the story of racial division in American during this period. Although the railway was often conceived of as a radically democratic space where the American people could interact as equals, this period also saw the development of state-sanctioned segregation laws against black citizens of the country. As the railway and its logic of historical development ossified in the minds of those who benefited from it, many black authors were perceptive critics of not only the politics of the railway but the underlying assumptions about how societies functioned that seemed to guarantee the dominant ideology’s concept of history. Taking my theoretical starting point in the works of Jacques Lacan and Karl Marx, I argue that in this period, the logic of the railway created a shift in the dominant assumptions of the nature of social differences. Whereas in the eighteenth century, racial difference had been conceived of as a historical constant, with the railway, racial difference became spatialized along the path of the railway.