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- All Subjects: Foundations
- Creators: Houston, Sandra L.
- Creators: Romero, Mary
Description
This study explores how grantmakers conceptualize their work with respect to issues of social justice. It seeks to answer two primary questions: What role, if any, does the philanthropic community ascribe to itself in not just ameliorating but helping solve our greatest social challenges? And if philanthropy does see itself as an agent of change, what are the barriers that limit its potential? After painting a portrait of contemporary American philanthropy, this paper applies Iris Marion Young's critique of distributive justice to philanthropy's dilemma between downstream charitable aid and upstream structural change. The thesis then turns to analysis of semi-structured interviews with eighteen of Arizona's foundation leaders to assess whether and how state-level philanthropic leaders see their work vis-á -vis social justice, and understand how external factors limit philanthropy's ability to effect maximum social change. Participants express a desire to engage in genuinely meaningful philanthropy which does more than just maintain the status quo, but identify multiple constraints, including legal barriers to fully utilizing advocacy as a tool, governmental infringement on philanthropic autonomy, the channeling of philanthropic resources toward basic needs as a result of the recession, and a grantmaking orientation that prioritizes short term programs that yield swift, measurable results as opposed to longer term efforts.
ContributorsLester, Eva Lorraine (Author) / Zatz, Marjorie S (Thesis advisor) / Haglund, LaDawn (Committee member) / Romero, Mary (Committee member) / Arizona State University (Publisher)
Created2011
Description
The primary objective of this study is to understand the effect of soil cracking on foundation performance for expansive soil profiles. Two major effects of cracks were studied to assess the effect of cracks on foundation performance. First, the effect of cracks on soil volume change response was studied. Second, the effect of cracks on unsaturated flow properties and extent and degree of wetting were evaluated. Multiple oedometer-type pressure plate tests were conducted to evaluate the effect of cracks on soil properties commonly used in volume change (heave) analyses, such as swell pressure, soil water characteristic curve (SWCC), and swell potential. Additionally, the effect of cracks on saturated and unsaturated hydraulic conductivity was studied experimentally to assess the impact of cracks on properties critical to evaluation of extent and degree of wetting. Laboratory experiments were performed on both intact and cracked specimen so that the effect of cracks on behavior could be benchmarked against intact soil response. Based on laboratory observations, the SWCC of a cracked soil is bimodal. However, this bimodal behavior is only observed in the very low suction ranges. Because the bimodal nature of the SWCC of cracked clays is only distinguishable at extremely low suctions, the bimodal behavior is unlikely to have engineering significance when soils remain unsaturated. A "lumped mass" parameter approach has been studied as a practical approach for modeling of cracked soils for both fluid flow and volume change determination. Laboratory unsaturated flow experiments were simulated using a saturated-unsaturated flow finite element code, SVFlux, to back-analyze unsaturated hydraulic conductivity functions for the subject soils. These back-analyzed results were compared to the results from traditionally-applied analyses of the laboratory instantaneous profile tests on intact and cracked specimens. Based on this comparison, empirical adjustments were suggested for modeling "lumped mass" cracked soil behavior in numerical codes for fluid flow through cracked soils. Using the empirically adjusted flow parameters for unsaturated flow modeling, example analyses were performed for slab-on-grade problems to demonstrate the impact of cracks on degree and extent of wetting under unsaturated and saturated flow conditions for different surface flux boundary conditions.
ContributorsAbbaszadeh, Mohammad (Author) / Houston, Sandra L. (Thesis advisor) / Zapata, Claudia E (Thesis advisor) / Welfert, Bruno D (Committee member) / Houston, William N (Committee member) / Arizona State University (Publisher)
Created2011