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
Professional environmental scientists are increasingly under pressure to inform and even shape policy. Scientists engage policy effectively when they act within the bounds of objectivity, credibility, and authority, yet significant portions of the scientific community condemn such acts as advocacy. They argue that it is nonobjective, that it risks damaging the credibility of science, and that it is an abuse of authority. This means objectivity, credibility, and authority deserve direct attention before the policy advocacy quagmire can be reasonably understood. I investigate the meaning of objectivity in science and that necessarily brings the roles of values in science into question. This thesis is a sociological study of the roles environmental values play in the decisions of environmental scientists working in the institution of academia. I argue that the gridlocked nature of the environmental policy advocacy debates can be traced to what seems to be a deep tension and perhaps confusion among these scientists. I provide empirical evidence of this tension and confusion through the use of in depth semi-structured interviews among a sampling of academic environmental scientists (AES). I show that there is a struggle for these AES to reconcile their support for environmentalist values and goals with their commitment to scientific objectivity and their concerns about being credible scientists in the academy. Additionally, I supplemented my data collection with environmental sociology and history, plus philosophy and sociology of science literatures. With this, I developed a system for understanding values in science (of which environmental values are a subset) with respect to the limits of my sample and study. This examination of respondent behavior provides support that it is possible for AES to act on their environmental values without compromising their objectivity, credibility, and authority. These scientists were not likely to practice this in conversations with colleagues and policy-makers, but were likely to behave this way with students. The legitimate extension of this behavior is a viable route for continuing to integrate the human and social dimensions of environmental science into its practice, its training, and its relationship with policy.
ContributorsAppleton, Caroline (Author) / Minteer, Ben (Thesis advisor) / Chew, Matt (Committee member) / Armendt, Brad (Committee member) / Arizona State University (Publisher)
Created2012
Description
The objective of this research was to predict the persistence of potential future contaminants in indirect potable reuse systems. In order to accurately estimate the fates of future contaminants in indirect potable reuse systems, results describing persistence from EPI Suite were modified to include sorption and oxidation. The target future contaminants studied were the approximately 2000 pharmaceuticals currently undergoing testing by United States Food and Drug Administration (US FDA). Specific organic substances such as analgesics, antibiotics, and pesticides were used to verify the predicted half-lives by comparing with reported values in the literature. During sub-surface transport, an important component of indirect potable reuse systems, the effects of sorption and oxidation are important mechanisms. These mechanisms are not considered by the quantitative structure activity relationship (QSAR) model predictions for half-lives from EPI Suite. Modifying the predictions from EPI Suite to include the effects of sorption and oxidation greatly improved the accuracy of predictions in the sub-surface environment. During validation, the error was reduced by over 50% when the predictions were modified to include sorption and oxidation. Molecular weight (MW) is an important criteria for estimating the persistence of chemicals in the sub-surface environment. EPI Suite predicts that high MW compounds are persistent since the QSAR model assumes steric hindrances will prevent transformations. Therefore, results from EPI Suite can be very misleading for high MW compounds. Persistence was affected by the total number of halogen atoms in chemicals more than the sum of N-heterocyclic aromatics in chemicals. Most contaminants (over 90%) were non-persistent in the sub-surface environment suggesting that the target future drugs do not pose a significant risk to potable reuse systems. Another important finding is that the percentage of compounds produced from the biotechnology industry is increasing rapidly and should dominate the future production of pharmaceuticals. In turn, pharmaceuticals should become less persistent in the future. An evaluation of indirect potable reuse systems that use reverse osmosis (RO) for potential rejection of the target contaminants was performed by statistical analysis. Most target compounds (over 95%) can be removed by RO based on size rejection and other removal mechanisms.
ContributorsLim, Seung (Author) / Fox, Peter (Thesis advisor) / Abbaszadegan, Morteza (Committee member) / Halden, Rolf (Committee member) / Arizona State University (Publisher)
Created2011
Description
In rural and urban areas of Nigeria, dependence on groundwater is increasing since the population is growing and high quality, treated municipal water is scarce. Municipal drinking water is often compromised because of old and leaking distribution pipes. About 58% of the water consumed in Lagos State, Nigeria, comes from residential wells. However, a majority of residential wells are shallow wells that are constructed relatively close to septic tanks or pit latrines and are therefore subject to contamination. In certain parts of Africa, there is high potential of severe epidemic if water quality is not improved. With increasing reliance on groundwater, a need exists to monitor the quality of groundwater. This thesis develops a plan for a monitoring program for residential wells in Lagos State, Nigeria. The program focuses on ways by which owners can maintain reasonably good water quality, and on the role of government in implementing water quality requirements. In addition, this thesis describes a survey conducted in various areas of Lagos State to assess community awareness of the importance of groundwater quality and its impact on individuals and the community at large. The survey shows that 30% to 40% of the households have located their wells and septic tanks in the same general area. Various templates have been created to help the staff of a future monitoring program team to effectively gather information during site characterization. A "Questions and Answers" leaflet has been developed to educate citizens about the need for monitoring residential wells.
ContributorsTalabi, Omogbemiga Adepitan (Author) / Edwards, David (Thesis advisor) / Hild, Nicholas (Committee member) / Olson, Larry (Committee member) / Arizona State University (Publisher)
Created2010
Description
The purpose of this study was to explore current pedagogical approaches of undergraduate directing curricula in selected U.S. institutions of higher learning. Building on the work of Clifford Hamar and Anne Fliotsos, the thesis builds a foundation for further study of contemporary directing pedagogy. Fourteen course syllabi were collected voluntarily from members of The Association for Theatre in Higher Education (ATHE) and served at the primary source material. They were interpreted and analyzed qualitatively for components that identified the methods and philosophies of the instructor and/or institution. From these syllabi, the researcher found 11 "skill categories" which cover all potential skills and bodies of information that, according to the data, a director should master. The categories are: (1) Script and Performance Analysis; (2) Directorial Techniques and Methods; (3) Production Practices; (4) Role and History of the Director; (5) Actor Training; (6) Technical Knowledge; (7) Personal Growth, Expression, and Vision; (8) Collaboration; (9) Communication; (10) Directorial Criticism; and (11) Storytelling. The categories fall on a spectrum ranging from practical based "knowledges" to skills based in individual resources and artistry, termed "abilities." Once these categories were established, the researcher examined two case study institutions: State University of New York at Buffalo (UB) and University of New Hampshire (UNH). The researcher collected public information concerning the guiding philosophies, financial profile, and curricula for both universities. From this data, combined with the 11 categories, the researcher found that the "personality" of the institution was reflected in the pedagogical approach of their respective directing courses. In the case of UB, a research-oriented institution had a production-focused directing course. UNH, with its Liberal Arts philosophy that promotes personal exploration, had a directing course that emphasized the artistic resources of the individual. Most importantly, this work creates a foundation from which future studies can be built. Broader and deeper analysis at a national level can now be approached with a framework of evaluation and analysis, leading ever closer to an understanding of the art and craft of directing.
ContributorsWelch, Peter Benjamin (Author) / Saldana, Johnny (Thesis advisor) / Gharavi, Lance (Committee member) / Partlan, William (Committee member) / Arizona State University (Publisher)
Created2010
Description
ABSTRACT This narrative study traces the development of a dance curriculum as it unfolded in an inner city public school. It examines the curriculum emergence through intersecting worlds of artistic practice, improvisation, lived experience and context. These worlds were organized and explored through themes of gender, emotion, longing and intersections and examined through lenses of critical theory, aesthetics and currere. It examines the interior dialogue within one individual educator who is both a dance artist and a teacher and reflects the differing and at times conflicting perspectives within those two positions. The curriculum acquired the name "curriculum by accident" because several highly unexpected events contributed to its development. The students were initially suspicious and hostile and presented significant resistance to classical dance as an artistic form. This resistance was circumvented through creative process and improvisation. The act of improvisation became both a way to approach teaching and curriculum development and as an artistic process. Improvisation courts chance, the unplanned and the accidental through a structure in which the unknown is as valued as the known. The school setting is one full of known subjects; curriculum, settings, procedures, people and expectations. Curriculum by accident was a circumstance in which a known (school) and an unknown (the evolving curriculum) melded. The development of curriculum by accident was a response to an array of intuitive and serendipitous cues. The curriculum seeped through the cracks of school experience and transmuted into a curriculum that was very successful.
ContributorsBendix, Susan W. (Author) / Blumenfeld-Jones, Donald (Thesis advisor) / Barone, Thomas (Committee member) / Jackson, Naomi (Committee member) / Arizona State University (Publisher)
Created2010
Description
The purpose of this phenomenological hermeneutic study was to explore the meaning found in the lived-experience of producing scholarship for five higher education administrators from within the major areas of administration in higher education--academic affairs, business affairs, and student affairs--from a single research university in the western United States. In the historical and recent scholarship in and about the three fields of higher education administration, academic affairs, business affairs, and student affairs, one issue that has not been addressed is what it is like to produce scholarship as an administrator. Current scholarship in the field helps administrative practice by focusing on the practice of administration; however, current literature did not provide an understanding of what it means to do scholarship as an administrator. Thus, the challenges and rewards of producing scholarship as a practicing administrator, creating the first step toward a possible new era in the practice of scholarship on college campuses, were explored in the this study. Individual semi-structured interviews were the primary source of data. The structured questions were used to set up the un-structured questions used to explore specific examples and instances pertaining to producing scholarship as an administrator. A three-step data analysis process was used to develop both an understanding of what scholarship means for each participant and an interpretation of the meaning of producing scholarship as a higher education administrator. Across all of the lived-experiences and the participants' varied scholarly endeavors, each administrator was more connected to education and contributed more to the educational environment by participating in scholarly activities. The administrators were found to be more connected to the people within the university, their own field of practice, and with the university itself.
ContributorsCoe, Aaron (Author) / De Los Santos, Jr., Alfredo G (Thesis advisor) / Ewing, Kris M (Thesis advisor) / Heitner, Keri L (Committee member) / Arizona State University (Publisher)
Created2011
Description
Water quality is a severe problem throughout the world. Much available water is contaminated by pathogenic microbes. This project reviews the traditional process of solar water disinfection in bottles (SODIS), discusses experiments conducted with SODIS bottles modified to thermally enhance the process, analyzes experimental data for modified SODIS containers, and suggests ways that by which the traditional process can be improved. Traditional SODIS is currently used in many rural parts of developing countries to disinfect water. The process uses ultraviolet rays and thermal effects to inactivate microorganisms that tend to cause diarrheal disease. If a sufficiently high temperature is attained to reach a synergistic UV-thermal effect range, the process of SODIS is about three times faster. However, many factors can inhibit attainment of sufficient heating of water in SODIS bottles in practice. By modifying the bottles to enhance effectiveness of sunlight in increasing the temperature of the water, SODIS can be more effective. In this research, a series of experiments were conducted over a period of four months and15 days at Arizona State University Polytechnic campus in Mesa, Arizona, U.S.A. Four different types of inexpensive materials (black paint, white paint, foam insulation, and aluminized mylar) were used individually or in combination in seven different modified configurations to assess the potential of the modifications to increase the temperatures of water inside 2-liter PET bottles. Experiments were run in triplicate. Temperatures inside the bottles, along with yard temperature, were recorded over time. Graphs were plotted for each set of experiments. The results of these experiment show that several types of modifications increased water temperature during exposure to sunlight. Water in bottles with black paint and foam insulation on the back side attained the highest temperatures, approximately 8-10 degrees Celsius above temperatures attained in plain bottles. The results of these experiments show how several inexpensive, easily obtained materials can significantly enhance the SODIS process.
ContributorsMadan, Samrath (Author) / Edwards, David (Thesis advisor) / Olson, Larry (Committee member) / Peterson, Danny (Committee member) / Arizona State University (Publisher)
Created2011
Description
More than half of all accessible freshwater has been appropriated for human use, and a substantial portion of terrestrial ecosystems have been transformed by human action. These impacts are heaviest in urban ecosystems, where impervious surfaces increase runoff, water delivery and stormflows are managed heavily, and there are substantial anthropogenic sources of nitrogen (N). Urbanization also frequently results in creation of intentional novel ecosystems. These "designed" ecosystems are fashioned to fulfill particular needs of the residents, or ecosystem services. In the Phoenix, Arizona area, the augmentation and redistribution of water has resulted in numerous component ecosystems that are atypical for a desert environment. Because these systems combine N loading with the presence of water, they may be hot spots of biogeochemical activity. The research presented here illustrates the types of hydrological modifications typical of desert cities and documents the extent and distribution of common designed aquatic ecosystems in the Phoenix metropolitan area: artificial lakes and stormwater retention basins. While both ecosystems were designed for other purposes (recreation/aesthetics and flood abatement, respectively), they have the potential to provide the added ecosystem service of N removal via denitrification. However, denitrification in urban lakes is likely to be limited by the rate of diffusion of nitrate into the sediment. Retention basins export some nitrate to groundwater, but grassy basins have higher denitrification rates than xeriscaped ones, due to higher soil moisture and organic matter content. An economic valuation of environmental amenities demonstrates the importance of abundant vegetation, proximity to water, and lower summer temperatures throughout the region. These amenities all may be provided by designed, water-intensive ecosystems. Some ecosystems are specifically designed for multiple uses, but maximizing one ecosystem service often entails trade-offs with other services. Further investigation into the distribution, bundling, and tradeoffs among water-related ecosystem services shows that some types of services are constrained by the hydrogeomorphology of the area, while for others human engineering and the creation of designed ecosystems has enabled the delivery of hydrologic ecosystem services independent of natural constraints.
ContributorsLarson, Elisabeth Knight (Author) / Grimm, Nancy (Thesis advisor) / Hartnett, Hilairy E (Committee member) / Fisher, Stuart G. (Committee member) / Anderies, John M (Committee member) / Lohse, Kathleen A (Committee member) / Arizona State University (Publisher)
Created2010
Description
Many expect renewable energy technologies to play a leading role in a sustainable energy supply system and to aid the shift away from an over-reliance on traditional hydrocarbon resources in the next few decades. This dissertation develops environmental, policy and social models to help understand various aspects of photovoltaic (PV) technologies. The first part of this dissertation advances the life cycle assessment (LCA) of PV systems by expanding the boundary of included processes using hybrid LCA and accounting for the technology-driven dynamics of environmental impacts. Hybrid LCA extends the traditional method combining bottom-up process-sum and top-down economic input-output (EIO) approaches. The embodied energy and carbon of multi-crystalline silicon photovoltaic systems are assessed using hybrid LCA. From 2001 to 2010, the embodied energy and carbon fell substantially, indicating that technological progress is realizing reductions in environmental impacts in addition to lower module price. A variety of policies support renewable energy adoption, and it is critical to make them function cooperatively. To reveal the interrelationships among these policies, the second part of this dissertation proposes three tiers of policy architecture. This study develops a model to determine the specific subsidies required to support a Renewable Portfolio Standard (RPS) goal. The financial requirements are calculated (in two scenarios) and compared with predictable funds from public sources. A main result is that the expected investments to achieve the RPS goal far exceed the economic allocation for subsidy of distributed PV. Even with subsidies there are often challenges with social acceptance. The third part of this dissertation originally develops a fuzzy logic inference model to relate consumers' attitudes about the technology such as perceived cost, maintenance, and environmental concern to their adoption intention. Fuzzy logic inference model is a type of soft computing models. It has the advantage of dealing with imprecise and insufficient information and mimicking reasoning processes of human brains. This model is implemented in a case study of residential PV adoption using data through a survey of homeowners in Arizona. The output of this model is the purchasing probability of PV.
ContributorsZhai, Pei (Author) / Williams, Eric D. (Thesis advisor) / Allenby, Braden (Committee member) / Phelan, Patrick (Committee member) / Arizona State University (Publisher)
Created2010
Description
The purpose of this project was to provide a pedagogical resource for students and teachers to utilize when preparing six standard formative pieces from the euphonium repertoire. The guided practice sections are written in plain English with several instances of first person writing to explain certain concepts in a less formal way. This was done so that any teacher, regardless of level could help a younger, more inexperienced student. In addition, the sections of guided practice were written to help those teachers who may or may not be intimately familiar with the works chosen. The recording was designed to present the music in current published format, with no improvisation by the soloist. The solos that were chosen are either college preparatory pieces, or formative works for the younger collegiate musician. All of the pieces included are published, and as of September 2010, available for purchase. The works included are: Six Studies in English Folk Song, by Ralph Vaughan Williams, ed. Paul Droste, Introduction and Dance, by J. Edouard Barat, ed. Glenn Smith, Andante et Allegro, by Joseph- Guy Ropartz, ed. Shapiro, Sonata for Unaccompanied Euphonium (or Trombone), by Fred L. Clinard, Jr., Suite for Baritone, by Don Haddad, and Andante and Rondo, by Antonio Capuzzi, ed. Philip Catelinet.
ContributorsStuckemeyer, Pat (Author) / Pilafian, Samuel (Thesis advisor) / Ericson, John Q. (Committee member) / Rogers, Rodney (Committee member) / Arizona State University (Publisher)
Created2010