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- Genre: Doctoral Dissertation
Descriptionno
ContributorsSalabiye-Gishey, Leclare Ellen (Author) / Spencer, Dee A. (Thesis advisor) / Appleton, Nicholas A. (Committee member) / Hotchkiss, Margaret (Committee member) / Arizona State University (Publisher)
Created2014
Description
Given the current focus on high-stakes accountability in America's public schools, this study examined teacher evaluation specific to physical education. This study revealed current teacher evaluation practices used in physical education, perceptions of school administrators related to the value of the physical education evaluation process, and the perceptions of the physical education teachers related to the value of the evaluation process. The first phase of this study was an interpretive document analysis study conducted on four separate teacher evaluation systems commonly used within the public school system to evaluate physical education teachers. Those four systems were: Marzanos teacher evaluation model, Danielson framework for teaching (FFT), Rewarding Excellence in Instruction and Leadership (REIL), and Teacher Advancement Program (TAP). A separate evaluation instrument specific to physical education created by the National Association of Sport and Physical Education (NASPE) was used as a comparative evaluation tool. Evidence suggests that two of the four teacher evaluation systems had a high percentage of alignment with the NASPE instrument (TAP 87.5%, FFT 82.5%). The Marzano teacher evaluation model had the least amount of alignment with the NASPE instrument (62.5%). The second phase of this study was a phenomenological approach to understanding administrators' and physical education teachers' perceptions to teacher evaluation specific to physical education. The participants in this study were administrators and physical education teachers from an urban school district. An informal survey and formal semi-structured interviews were used to reveal perceptions of teacher evaluation specific to physical education. Evidence from the administrator's informal survey and formal semi-structured interviews revealed four common themes: (1) "I value PE, but I live in reality" (administrators value physical education, but practice in reality); (2) "good teaching is good teaching"; (3) "I know my limitations, and I want
eed help" (relative to teacher evaluation in PE); and (4) where's the training beef? Evidence from the physical education teacher's informal survey and formal semi-structured interviews revealed three common themes: (a) physical education is valued, but not prioritized; (b) teacher evaluation in physical education is "greatly needed, yet not transparent; (c) physical educators are not confident in their evaluator.
eed help" (relative to teacher evaluation in PE); and (4) where's the training beef? Evidence from the physical education teacher's informal survey and formal semi-structured interviews revealed three common themes: (a) physical education is valued, but not prioritized; (b) teacher evaluation in physical education is "greatly needed, yet not transparent; (c) physical educators are not confident in their evaluator.
ContributorsNorris, Jason (Author) / Van Der Mars, Hans (Thesis advisor) / Beardsley, Audrey (Thesis advisor) / Kulinna, Pamela (Committee member) / Arizona State University (Publisher)
Created2014
Description
Diarrheal diseases caused by poor water, sanitation and hygiene continue to kill more children in Sub-Saharan Africa's burgeoning informal urban settlements than in any other part of the world. In recent years, Delegated Management Model (DMM), a partnership in which a utility delegates service management to slum residents have been promoted as new models to improve services.
This dissertation examines the benefits of DMM by comparing water services in three informal settlements in Kisumu city, Kenya: two slums where DMM has been implemented, and one, a control, where it has not. In addition, the research examined how school-based hygiene interventions could be designed to improve safe water and hygiene knowledge in urban informal settlements. This study compared outcomes of two approaches to hygiene education, one which combined messages with participatory water testing; the second used hygiene messages alone.
Results of the DMM study showed that DMM implementation had lowered water cost and improved provider accountability. However, unhygienic water collection and handling practices on the part of the service users could contaminate drinking water that was clean at the delivery point, thus preventing the intended health outcomes of DMM from being realized. Results of the hygiene education intervention showed that one week after the inventions, hygiene knowledge among students who received the intervention that combined hygiene messages with participatory water testing was significantly improved. Evaluation of the intervention 12 months after implementation showed that the hygiene knowledge gained was sustained.
The research findings suggest that: i) regular monitoring of water quality at the kiosks is essential to ensure that the DMM model achieves intended health outcomes, ii) sanitation conditions at kiosk sites need to be regulated to meet minimum hygiene standards, and iii) customers need to be educated on safe water collection and storage practices. Finally, school-based hygiene education could be made more effective by including hands-on water testing by students. Making sustainable impact on health and wellbeing of slum residents requires not only building effective partnerships for water delivery, but also paying close attention to the other points of intervention within the water system.
This dissertation examines the benefits of DMM by comparing water services in three informal settlements in Kisumu city, Kenya: two slums where DMM has been implemented, and one, a control, where it has not. In addition, the research examined how school-based hygiene interventions could be designed to improve safe water and hygiene knowledge in urban informal settlements. This study compared outcomes of two approaches to hygiene education, one which combined messages with participatory water testing; the second used hygiene messages alone.
Results of the DMM study showed that DMM implementation had lowered water cost and improved provider accountability. However, unhygienic water collection and handling practices on the part of the service users could contaminate drinking water that was clean at the delivery point, thus preventing the intended health outcomes of DMM from being realized. Results of the hygiene education intervention showed that one week after the inventions, hygiene knowledge among students who received the intervention that combined hygiene messages with participatory water testing was significantly improved. Evaluation of the intervention 12 months after implementation showed that the hygiene knowledge gained was sustained.
The research findings suggest that: i) regular monitoring of water quality at the kiosks is essential to ensure that the DMM model achieves intended health outcomes, ii) sanitation conditions at kiosk sites need to be regulated to meet minimum hygiene standards, and iii) customers need to be educated on safe water collection and storage practices. Finally, school-based hygiene education could be made more effective by including hands-on water testing by students. Making sustainable impact on health and wellbeing of slum residents requires not only building effective partnerships for water delivery, but also paying close attention to the other points of intervention within the water system.
ContributorsNzengya, Daniel (Author) / Aggarwal, Rimjhim (Thesis advisor) / Hartwell, Leland (Committee member) / Boone, Christopher (Committee member) / Arizona State University (Publisher)
Created2014
Description
Concrete is the most widely used infrastructure material worldwide. Production of portland cement, the main binding component in concrete, has been shown to require significant energy and account for approximately 5-7% of global carbon dioxide production. The expected continued increased use of concrete over the coming decades indicates this is an ideal time to implement sustainable binder technologies. The current work aims to explore enhanced sustainability concretes, primarily in the context of limestone and flow. Aspects such as hydration kinetics, hydration product formation and pore structure add to the understanding of the strength development and potential durability characteristics of these binder systems. Two main strategies for enhancing this sustainability are explored in this work: (i) the use of high volume limestone in combination with other alternative cementitious materials to decrease the portland cement quantity in concrete and (ii) the use of geopolymers as the binder phase in concrete. The first phase of the work investigates the use of fine limestone as cement replacement from the perspective of hydration, strength development, and pore structure. The nature of the potential synergistic benefit of limestone and alumina will be explored. The second phase will focus on the rheological characterization of these materials in the fresh state, as well as a more general investigation of the rheological characterization of suspensions. The results of this work indicate several key ideas. (i) There is a potential synergistic benefit for strength, hydration, and pore structure by using alumina and in portland limestone cements, (ii) the limestone in these systems is shown to react to some extent, and fine limestone is shown to accelerate hydration, (iii) rheological characteristics of cementitious suspensions are complex, and strongly dependent on several key parameters including: the solid loading, interparticle forces, surface area of the particles present, particle size distribution of the particles, and rheological nature of the media in which the particles are suspended, and (iv) stress plateau method is proposed for the determination of rheological properties of concentrated suspensions, as it more accurately predicts apparent yield stress and is shown to correlate well with other viscoelastic properties of the suspensions.
ContributorsVance, Kirk (Author) / Neithalath, Narayanan (Thesis advisor) / Rajan, Subramaniam D. (Committee member) / Mobasher, Barzin (Committee member) / Chawla, Nikhilesh (Committee member) / Marzke, Robert (Committee member) / Arizona State University (Publisher)
Created2014
Description
The experiences of lesbian and gay (LG) administrators in school and district-level positions are different than their heterosexual counterparts, not just because their social lenses are different, but because the policies and climates of the communities where they work has a significant impact on their relationships with stakeholder groups in the schools/offices. In this qualitative study I document and analyze the stories of LG educators, how they navigate their professional relationships, how they evolve as leaders, and their understanding of how their choices to be out or not have influenced their careers and professional relationships. The study also explores how performativity and sexuality relate to the professional relationships of the participants. Finally, the leaders' stories provide insight into the experiences of marginalized groups of professionals whose stories are often absent from the professional and research literatures on school administration. These eight school and district administrators live in the Southwestern and Northwest, many of them are out at work and a few are not. They range in age from mid-20s to late 50s, and their experiences as educational leaders spans from just one year to over 25 years. The participants sat for two to three interviews each over the course of approximately four months. The names of the participants, institutions, and specific communities have been changed to maintain confidentiality. I found that all the participants' relationships with stakeholders groups and individuals were impacted to varying degrees by fear - specifically the fear that results from the heteronormative rules, biases, and expectations of the public school system. The heteronormativity of the public education system is often a reflection of its community's belief system, as well as a reflection of the larger, more unconscious heteronormative belief system that shapes schools and educational leadership, a leader's professional capacity, and the relationships that are critical to being an effective leader. Essentially, the heteronormative fear reflected in the policies and practices of a community, an educational institution, and its members has a dramatic effect on the decisions and relationships that educational leaders have with key stakeholder groups on both an unconscious and conscious level.
ContributorsAnderson, Shannon (Author) / Powers, Jeanne (Thesis advisor) / Fischman, Gustavo (Thesis advisor) / Carlson, David Lee (Committee member) / Arizona State University (Publisher)
Created2014
Description
This dissertation examines the nexus of three trends in electricity systems transformations underway worldwide—the scale-up of renewable energy, regionalization, and liberalization. Interdependent electricity systems are being envisioned that require partnership and integration across power disparities. This research explores how actors in the Mediterranean region envisioned a massive scale-up of renewable energy within a single electricity system and market across Europe, North Africa, and the Middle East. It asks: How are regional sociotechnical systems envisioned? What are the anticipated consequences of a system for a region with broad disparities and deep sociopolitical differences? What can be learned about energy justice by examining this vision at multiple scales? A sociotechnical systems framework is used to analyze energy transformations, interweaving the technical aspects with politics, societal effects, and political development issues. This research utilized mixed qualitative methods to analyze Mediterranean electricity transformations at multiple scales, including fieldwork in Morocco and Germany, document analysis, and event ethnography. Each scale—from a global history of concentrating solar power technologies to a small village in Morocco—provides a different lens on the sociotechnical system and its implications for justice. This study updates Thomas Hughes’ Networks of Power, the canonical history of the sociotechnical development of electricity systems, by adding new aspects to sociotechnical electricity systems theory. First, a visioning process now plays a crucial role in guiding innovation and has a lasting influence on the justice outcomes. Second, rather than simply providing people with heat and light, electrical power systems in the 21st century are called upon to address complex integrated solutions. Furthermore, building a sustainable energy system is now a retrofitting agenda, as system builders must graft new infrastructure on top of old systems. Third, the spatial and temporal aspects of sociotechnical energy systems should be amended to account for constructed geography and temporal complexity. Fourth, transnational electricity systems pose new challenges for politics and political development. Finally, this dissertation presents a normative framework for conceptualizing and evaluating energy justice. Multi-scalar, systems-level justice requires collating diverse ideas about energy justice, expanding upon them based on the empirical material, and evaluating them with this framework.
ContributorsMoore, Sharlissa (Author) / Hackett, Ed J. (Thesis advisor) / Minteer, Ben (Committee member) / Parmentier, Mary Jane (Committee member) / Wetmore, Jameson (Committee member) / Arizona State University (Publisher)
Created2015
Description
Comparative life cycle assessment (LCA) evaluates the relative performance of multiple products, services, or technologies with the purpose of selecting the least impactful alternative. Nevertheless, characterized results are seldom conclusive. When one alternative performs best in some aspects, it may also performs worse in others. These tradeoffs among different impact categories make it difficult to identify environmentally preferable alternatives. To help reconcile this dilemma, LCA analysts have the option to apply normalization and weighting to generate comparisons based upon a single score. However, these approaches can be misleading because they suffer from problems of reference dataset incompletion, linear and fully compensatory aggregation, masking of salient tradeoffs, weight insensitivity and difficulties incorporating uncertainty in performance assessment and weights. Consequently, most LCA studies truncate impacts assessment at characterization, which leaves decision-makers to confront highly uncertain multi-criteria problems without the aid of analytic guideposts. This study introduces Stochastic Multi attribute Analysis (SMAA), a novel approach to normalization and weighting of characterized life-cycle inventory data for use in comparative Life Cycle Assessment (LCA). The proposed method avoids the bias introduced by external normalization references, and is capable of exploring high uncertainty in both the input parameters and weights.
ContributorsPrado, Valentina (Author) / Seager, Thomas P (Thesis advisor) / Chester, Mikhail V (Committee member) / Kullapa Soratana (Committee member) / Tervonen, Tommi (Committee member) / Arizona State University (Publisher)
Created2015
Description
In this dissertation I employed a culminating cycle of action research following two earlier ones to facilitate the creation of a professional learning community (PLC). My research took place at an elementary school in an urban area of the American southwest. As principal of this school I had initiated the policies and procedures that were often recommended to create PLCs. However, observations of teachers in PLC meetings indicated that conversations focused on logistical planning issues, rather than on the in-depth pedagogical discussions that characterize high functioning PLCs. To address this problem I introduced a form of peer observation into the PLC meeting. This was achieved by showing short video recordings of teachers in their classrooms. I used a mixed methods approach to investigate how this innovation influenced three constructs associated with PLC meetings: professional learning, the sharing of tacit teaching knowledge, and collaboration in the PLC.
Quantitative data consisted of responses to a survey given as a pre-, post-, and retrospective pre-test. Results showed significant gains for all three constructs between the retrospective pre-test and the post-test, but no significant gain between the pre- and post-test. Analysis of qualitative data produced four assertions. First, the process of peer observation during a PLC meeting benefitted the personal learning of teachers. Second, peer observation benefitted teacher teams' abilities to demonstrate the critical behaviors of a true PLC. Third, the process of facilitating peer observation through video recordings evoked negative emotions. Fourth, the degree to which teachers were able to learn from a video was influenced by their perceptions of the video's authenticity and similarity to their own classrooms.
In the discussion, complementarity of the quantitative and qualitative data was described and results were explained in terms of previous research and established theory. Additionally, practical lessons that were learned, limitations, and research implications were described. In a concluding section, I discussed my personal learning regarding leadership, innovation, and action research; the purpose of the doctorate in education; and strengthening connections between research and practitioners.
Quantitative data consisted of responses to a survey given as a pre-, post-, and retrospective pre-test. Results showed significant gains for all three constructs between the retrospective pre-test and the post-test, but no significant gain between the pre- and post-test. Analysis of qualitative data produced four assertions. First, the process of peer observation during a PLC meeting benefitted the personal learning of teachers. Second, peer observation benefitted teacher teams' abilities to demonstrate the critical behaviors of a true PLC. Third, the process of facilitating peer observation through video recordings evoked negative emotions. Fourth, the degree to which teachers were able to learn from a video was influenced by their perceptions of the video's authenticity and similarity to their own classrooms.
In the discussion, complementarity of the quantitative and qualitative data was described and results were explained in terms of previous research and established theory. Additionally, practical lessons that were learned, limitations, and research implications were described. In a concluding section, I discussed my personal learning regarding leadership, innovation, and action research; the purpose of the doctorate in education; and strengthening connections between research and practitioners.
ContributorsMacKinney, Bennett (Author) / Buss, Ray R (Thesis advisor) / Zucker, Stanley (Committee member) / Haghighat, Ibi (Committee member) / Arizona State University (Publisher)
Created2015
Description
Advancing sustainable food systems requires holistic understanding and solutions-oriented approaches that transcend disciplines, so expertise in a variety of subjects is necessary. Proposed solutions are usually technically or socially oriented, but disagreement over the best approach to the future of food dominates the dialogue. Technological optimists argue that scientific advances are necessary to feed the world, but environmental purists believe that reductions in consumption and waste are sufficient and less risky. Life cycle assessment (LCA) helps resolve debates through quantitative analysis of environmental impacts from products which serve the same function. LCA used to compare dietary choices reveals that simple plant-based diets are better for the environment than diets that include animal products. However, analysis of soy protein isolate (SPI) demonstrates that certain plant-based proteins may be less preferable for the environment than some unprocessed meats in several categories due to additional impacts that come from industrial processing. LCAs' focus on production risks ignoring consumers, but the food system exists to serve consumers, who can be major drivers of change. Therefore, the path to a sustainable food system requires addressing consumption issues as well. Existing methods for advancing sustainable food systems that equate more information with better behavior or performance are insufficient to create change. Addressing food system issues requires sufficient tacit knowledge to understand how arguments are framed, what the supporting content is, the findings of primary sources, and complex and controversial dialogue surrounding innovations and interventions for food system sustainability. This level of expertise is called interactional competence and it is necessary to drive and maintain holistic progress towards sustainability. Development strategies for interactional competence are informed by studying the motivations and strategies utilized by vegans. A new methodology helps advance understanding of expertise development by assessing levels of expertise and reveals insights into how vegans maintain commitment to a principle that influences their daily lives. The study of veganism and expertise reveals that while providing information to debunk fallacies is important, the development of tacit knowledge is fundamental to advance to a stage of competence.
ContributorsBerardy, Andrew (Author) / Seager, Thomas P (Thesis advisor) / Hannah, Mark (Committee member) / Costello, Christine (Committee member) / Landis, Amy (Committee member) / Wharton, Christopher (Christopher Mack), 1977- (Committee member) / Arizona State University (Publisher)
Created2015
Descriptionbold-Navajo Language-bold
italic-Novice, Intermediate, Proficient, Advance-italic
italic-Novice, Intermediate, Proficient, Advance-italic
ContributorsTodacheeny, Frank (Author) / Spencer, Dee Ann (Thesis advisor) / Appleton, Nicholas (Committee member) / Gilmore, Treva (Committee member) / Arizona State University (Publisher)
Created2014