ASU Electronic Theses and Dissertations
This collection includes most of the ASU Theses and Dissertations from 2011 to present. ASU Theses and Dissertations are available in downloadable PDF format; however, a small percentage of items are under embargo. Information about the dissertations/theses includes degree information, committee members, an abstract, supporting data or media.
In addition to the electronic theses found in the ASU Digital Repository, ASU Theses and Dissertations can be found in the ASU Library Catalog.
Dissertations and Theses granted by Arizona State University are archived and made available through a joint effort of the ASU Graduate College and the ASU Libraries. For more information or questions about this collection contact or visit the Digital Repository ETD Library Guide or contact the ASU Graduate College at gradformat@asu.edu.
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Description
Bioparticles comprise a diverse amount of materials ubiquitously present in nature. From proteins to aerosolized biological debris, bioparticles have important roles spanning from regulating cellular functions to possibly influencing global climate. Understanding their structures, functions, and properties provides the necessary tools to expand our fundamental knowledge of biological systems and exploit them for useful applications. In order to contribute to this efforts, the work presented in this dissertation focuses on the study of electrokinetic properties of liposomes and novel applications of bioaerosol analysis. Using immobilized lipid vesicles under the influence of modest (less than 100 V/cm) electric fields, a novel strategy for bionanotubule fabrication with superior throughput and simplicity was developed. Fluorescence and bright field microscopy was used to describe the formation of these bilayer-bound cylindrical structures, which have been previously identified in nature (playing crucial roles in intercellular communication) and made synthetically by direct mechanical manipulation of membranes. In the biological context, the results of this work suggest that mechanical electrostatic interaction may play a role in the shape and function of individual biological membranes and networks of membrane-bound structures. A second project involving liposomes focused on membrane potential measurements in vesicles containing trans-membrane pH gradients. These types of gradients consist of differential charge states in the lipid bilayer leaflets, which have been shown to greatly influence the efficacy of drug targeting and the treatment of diseases such as cancer. Here, these systems are qualitatively and quantitatively assessed by using voltage-sensitive membrane dyes and fluorescence spectroscopy. Bioaerosol studies involved exploring the feasibility of a fingerprinting technology based on current understanding of cellular debris in aerosols and arguments regarding sampling, sensitivity, separations and detection schemes of these debris. Aerosolized particles of cellular material and proteins emitted by humans, animals and plants can be considered information-rich packets that carry biochemical information specific to the living organisms present in the collection settings. These materials could potentially be exploited for identification purposes. Preliminary studies evaluated protein concentration trends in both indoor and outdoor locations. Results indicated that concentrations correlate to certain conditions of the collection environment (e.g. extent of human presence), supporting the idea that bioaerosol fingerprinting is possible.
ContributorsCastillo Gutiérrez, Josemar Andreina (Author) / Hayes, Mark A. (Thesis advisor) / Herckes, Pierre (Committee member) / Ghrilanda, Giovanna (Committee member) / Arizona State University (Publisher)
Created2011
Description
Virtue was a concept of paramount importance in the American founders' republican thought. Without virtue, there could be no liberty, no order, no devotion to the common good, and no republican government. This dissertation examines the concept of virtue at the American founding, particularly virtue in the political thought of Mercy Otis Warren (1728-1814). The most important female intellectual of the Revolutionary generation, Warren wrote passionately about liberty and the beauty of republican ideals. Most important to this study, she consistently advocated the central place of virtue in a free and well-ordered republic. I argue that Warren incorporates three distinct philosophical threads - classical, bourgeois-marketplace, and Christian ideals - in her conception of virtue. I first analyze how Warren uses each of these three threads of virtue throughout her writings. I then examine how she synthesizes these individual threads into a single, cohesive conception of virtue. I argue that Warren consistently merges these ideals into a conception of virtue that she employs to address three pressing political problems of her day: How to motivate reluctant colonists to seek independence; how to check various forms of corruption spreading among the people; and how to counter corruption arising from commercial growth in the new nation. Modern political theorists often argue that these three threads, especially the classical republican and Christian ideals of virtue, are irreconcilable. My analysis shows that to divorce virtue from Christianity in Warren's conception is to rob it of its corrective vigor within republican government. I argue that what Machiavelli and Rousseau wrote out of republican virtue Warren writes back in. In Warren's political thought, virtue serves as the foundation for a stable enduring political system, provides the necessary informal ordering principle for the emerging republic, and offers the means by which the new nation could achieve its millennial destiny.
ContributorsMunsil, Tracy F (Author) / Ball, Terence (Thesis advisor) / Dagger, Richard (Thesis advisor) / Crittenden, William J. (Committee member) / Arizona State University (Publisher)
Created2011
Description
Applications of non-traditional stable isotope variations are moving beyond geosciences to biomedicine, made possible by advances in multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS) technology. Mass-dependent isotope variation can provide information about the sources of elements and the chemical reactions that they undergo. Iron and calcium isotope systematics in biomedicine are relatively unexplored but have great potential scientific interest due to their essential nature in metabolism. Iron, a crucial element in biology, fractionates during biochemically relevant reactions. To test the extent of this fractionation in an important reaction process, equilibrium iron isotope fractionation during organic ligand exchange was determined. The results show that iron fractionates during organic ligand exchange, and that isotope enrichment increases as a function of the difference in binding constants between ligands. Additionally, to create a mass balance model for iron in a whole organism, iron isotope compositions in a whole mouse and in individual mouse organs were measured. The results indicate that fractionation occurs during transfer between individual organs, and that the whole organism was isotopically light compared with food. These two experiments advance our ability to interpret stable iron isotopes in biomedicine. Previous research demonstrated that calcium isotope variations in urine can be used as an indicator of changes in net bone mineral balance. In order to measure calcium isotopes by MC-ICP-MS, a chemical purification method was developed to quantitatively separate calcium from other elements in a biological matrix. Subsequently, this method was used to evaluate if calcium isotopes respond when organisms are subjected to conditions known to induce bone loss: 1) Rhesus monkeys were given an estrogen-suppressing drug; 2) Human patients underwent extended bed rest. In both studies, there were rapid, detectable changes in calcium isotope compositions from baseline - verifying that calcium isotopes can be used to rapidly detect changes in bone mineral balance. By characterizing iron isotope fractionation in biologically relevant processes and by demonstrating that calcium isotopes vary rapidly in response to bone loss, this thesis represents an important step in utilizing these isotope systems as a diagnostic and mechanistic tool to study the metabolism of these elements in vivo.
ContributorsMorgan, Jennifer Lynn Louden (Author) / Anbar, Ariel D. (Thesis advisor) / Wasylenki, Laura E. (Committee member) / Jones, Anne K. (Committee member) / Shock, Everett (Committee member) / Arizona State University (Publisher)
Created2011
Description
Historians often characterize first ladies in the Progressive Era as representatives of the last vestiges of Victorian womanhood in an increasingly modern society. This dissertation argues that first ladies negotiated an image of themselves that fulfilled both traditional and modern notions of womanhood. In crafting these images, first ladies constructed images of their celebrity selves that were uniquely modern. Thus, images of first ladies in the Progressive Era show them as modest and feminine but also autonomous, intelligent, and capable. Using the historian Charles Ponce de Leon's research on modern human-interest journalism, I contend that first ladies in the Progressive Era worked with the modern press in a symbiotic relationship. This relationship allowed the press exclusive access to what was, ostensibly, the first lady's private, and therefore authentic, self. By purporting to reveal parts of their private lives in the press, first ladies showed themselves as down-to-earth despite their success and fulfilled by their domestic pursuits despite their compelling public lives. By offering the press exclusive access to their lives, first ladies secured the opportunity to shape specific images of themselves to appeal, as broadly as possible, to their husbands and parties' constituents and the American public. First ladies in the Progressive Era thus acted as political figures by using both public and private, or what historian Catherine Allgor terms, "unofficial spaces" to support and reflect their husbands and parties' political agendas. In examining representations of first ladies in popular magazines and newspapers from 1901 to 1921 in tandem with letters, memoirs, and other personal papers from these women, a clear pattern emerges. Despite personal differences, first ladies in the Progressive Era represented themselves according to a specific formula in the modern press. The images, constructed by first ladies in this time period, reflect shifts in economic, social, and political life in Progressive Era America, which called for women to be independent and intelligent yet still maintain their femininity and domesticity.
ContributorsHorohoe, Jill (Author) / Gullett, Gayle (Thesis advisor) / Longley, Rodney K (Committee member) / Warren-Findley, Jannelle (Committee member) / Arizona State University (Publisher)
Created2011
Description
The following dissertation provides perspectives on the social, political, economic, and academic influences on language use, and particularly heritage language use, within the Filipino American community. What is the nature of language in this community? In what ways does language exist or co-exist? The hypothesis that autochthonous Filipino languages in the United States cease to be spoken in favor of English by Filipino Americans was tested through mixed methods of research. Literature and databases were reviewed which provided information concerning statistics, issues, and policies relating to language in Filipino America. Field research and interviews were conducted in which language use was of key interest. Results varied individually and contextually. Language seems to exist within the Filipino American community on a dynamic continuum. Immigrant Filipino Americans appear to be bilingual and multilingual. Second generation Filipino Americans tend to be English dominant with a range of bilingualism. The California Department of Education (CDOE) appears to foster bilingualism / multilingualism through its World Languages Departments (secondary education level), by offering language courses, such as Tagalog-based Filipino. Efforts to maintain non-English, Filipino languages in Arizona are less conspicuous, but they do exist primarily in familial and entrepreneurial ways.
ContributorsAxel, Joseph (Author) / Mccarty, Teresa (Thesis advisor) / Wiley, Terrence (Committee member) / Faltis, Christian (Committee member) / Arizona State University (Publisher)
Created2011
Description
Since the 1988 uprising, a transnational advocacy network has formed around the issue of democracy and human rights in Burma. Within this transnational advocacy network, personal narratives of trauma have been promulgated in both international and oppositional news media and human rights reports. My thesis critically analyzes the use of the trauma narrative for advocacy purposes by the transnational advocacy network that has emerged around Burma and reveals the degree to which these narratives adhere to a Western, individualistic meta-narrative focused on political and civil liberties. Examining the "boomerang" pattern and the concept of marketability of movements, I highlight the characteristics of the 1988 uprising and subsequent opposition movement that attracted international interest. Reflecting on the psychological aspects of constructing trauma narratives, I then review the scholarship which links trauma narratives to social and human rights movements. Using a Foucauldian approach to discourse analysis, I subsequently explain my methodology in analyzing the personal narratives I have chosen. Beyond a theoretical discussion of trauma narratives and transnational advocacy networks, I analyze the use of personal narratives of activists involved in the 1988 uprising and the emergence of Aung San Suu Kyi's life story as a compelling narrative for Western audiences. I then explore the structure of human rights reports which situate personal narratives of trauma within the framework of international human rights law. I note the differences in the construction of traumatic narratives of agency and those of victimization. Finally, using Cyclone Nargis as a case study, I uncover the discursive divide between human rights and humanitarian actors and their use of personal narratives to support different discursive constructions of the aid effort in the aftermath of the cyclone. I conclude with an appeal to a more reflexive approach to advocacy work reliant on trauma narratives and highlight feminist methodologies that have been successful in bringing marginalized narratives to the center of human rights discussions.
ContributorsBynum, Kate Elliott (Author) / Stancliff, Michael (Thesis advisor) / Friedrich, Patricia (Committee member) / Vaughan, Suzanne (Committee member) / Arizona State University (Publisher)
Created2011
Description
The electrode-electrolyte interface in electrochemical environments involves the understanding of complex processes relevant for all electrochemical applications. Some of these processes include electronic structure, charge storage, charge transfer, solvent dynamics and structure and surface adsorption. In order to engineer electrochemical systems, no matter the function, requires fundamental intuition of all the processes at the interface. The following work presents different systems in which the electrode-electrolyte interface is highly important. The first is a charge storage electrode utilizing percolation theory to develop an electrode architecture producing high capacities. This is followed by Zn deposition in an ionic liquid in which the deposition morphology is highly dependant on the charge transfer and surface adsorption at the interface. Electrode Architecture: A three-dimensional manganese oxide supercapacitor electrode architecture is synthesized by leveraging percolation theory to develop a hierarchically designed tri-continuous percolated network. The three percolated phases include a faradaically-active material, electrically conductive material and pore-former templated void space. The micropores create pathways for ionic conductivity, while the nanoscale electrically conducting phase provides both bulk conductivity and local electron transfer with the electrochemically active phase. Zn Electrodeposition: Zn redox in air and water stable N-ethyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide, [C2nmm][NTf2] is presented. Under various conditions, characterization of overpotential, kinetics and diffusion of Zn species and morphological evolution as a function of overpotential and Zn concentration are analyzed. The surface stress evolution during Zn deposition is examined where grain size and texturing play significant rolls in compressive stress generation. Morphological repeatability in the ILs led to a novel study of purity in ionic liquids where it is found that surface adsorption of residual amine and chloride from the organic synthesis affect growth characteristics. The drivers of this work are to understand the processes occurring at the electrode-electrolyte interface and with that knowledge, engineer systems yielding optimal performance. With this in mind, the design of a bulk supercapacitor electrode architecture with excellent composite specific capacitances, as well as develop conditions producing ideal Zn deposition morphologies was completed.
ContributorsEngstrom, Erika (Author) / Friesen, Cody (Thesis advisor) / Buttry, Daniel (Committee member) / Sieradzki, Karl (Committee member) / Arizona State University (Publisher)
Created2011
Description
Africa is misrepresented and mis-imaged in the western media. Because of this, notions and beliefs about atrocities that take place on the continent lack context, leaving people to think that Africa is a place of misery, darkness and despair; a monolithic land where evil resides. The image of Africa as the "heart of darkness" was conjured following the Joseph Conrad novel and the idea of Africa as the "Dark Continent" still pervades Western thought. This is an inadequate understanding of Africa, and lacks the context to comprehend why many of the atrocities in Africa occur. I will explore two atrocities in Africa, the 1994 Rwanda Genocide and child slavery on Lake Volta in Ghana. I believe that both these examples reflect how the label of evil is insufficient to describe the circumstances around each atrocity. In order to understand such events we must understand the part that colonialism and poverty play in the disruption of pan-African culture. The "evils" of these two phenomenon, are in many cases the result of the Western world's past involvement in Africa and are remnants and extensions of the disruption caused.
ContributorsBork, Paul (Author) / Simmons, William P (Thesis advisor) / Erfani, Julie (Committee member) / Anokye, Duku A (Committee member) / Arizona State University (Publisher)
Created2011
Description
One in six children in the developing world is engaged in Child labor. Child labor is considered an issue that violates children's rights in many countries and Iraq is no exception. In 2004, Iraq had 1,300,000 children between the ages of eight and sixteen years engaged in work (UNICEF.com, 2004). This study identifies the major causes of child labor in Iraq and investigates the consequences of this issue. In this thesis I draw on the comparison of former regimes in Iraq and Egypt and how those regimes were mistreating their citizens by making them live under poverty and oppression while they were receiving support from the U.S. Poverty is the major cause behind Iraqi children engaging in work. I used the data I collected in Iraq, in the city of Nasiriyah, of 28 working children to explain the relationship between poverty, students drop out of school, family attitude towards education and the child engagement in work. At the end of the thesis I offer a list of recommendations to try to address the problem of child labor in Iraq. The recommendations and regulations are for Iraqi government and the NGOs to take into consideration in trying to resolve and regulate the issue of child labor to rescue the children in Iraq from more exploitation in the future.
ContributorsAl-Taee, Hawraa F (Author) / Elenes, C (Thesis advisor) / Erfani, Julie M (Committee member) / Ali, Souad (Committee member) / Arizona State University (Publisher)
Created2011
Description
ABSTRACT The goal of this study is to use neoclassical realist methodology to add to the growing body of literature explaining why America is failing so horribly in its media war with militant Islamists. The general argument being conveyed is that inconsistencies in America's ostensibly liberal diplomacy strategy leaves it open to criticism and deprives it of the credibility necessary to muster an adequate rebuttal. To accomplish its aim, the analysis begins with an investigation into the origins of America's current liberal rhetorical approach. It is believed that with this sort look beneath the surface of the idealistic romanticism U.S. citizens have been continually conditioned to embrace, it becomes apparent that the grandiose pronouncements made by America's national political elite are actually based on rather dubious foundations. The evaluation then turns to a more focused rhetorical examination, which spans from the start of the so-called Arab Spring uprisings on December 18, 2010 to the delivery of President Obama's highly publicized State Department address regarding these demonstrations on May 19, 2011, in order to go behind the White House's official statements and uncover what truly motivated its policy decision making. The belief here is that a close review of the administration's abysmal performance during this historic period assists in making the inadequacy of America's current rhetorical narrative all the more evident. Finally, once the contradictory nature of contemporary American liberalism has been fully demonstrated, the last section concludes with an effort to explain why replacing America's liberal strategy with a straightforward realist stance is best for both American's relations with the Muslim world and America's overall security.
ContributorsThomas, John H., III (Author) / Mean, Lindsey (Thesis advisor) / Ramsey, Ramsey E (Committee member) / Nadesan, Majia (Committee member) / Arizona State University (Publisher)
Created2011