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- Creators: Arizona State University
- Creators: Chopin, Frédéric, 1810-1849
Description
Colleges and universities have goals and strategies in place to fill their on-campus housing facilities with students. At Arizona State University (ASU), the goal is to fill every bedspace on campus. All first-year students are expected to live on campus their first year at ASU. In Barrett, the Honors College (BHC), students are expected to live on-campus their first and second year at ASU. This study explores the BHC upperdivision communities to better understand why students are not returning to live on campus beyond the two-year live-on expectation. In this study, the researcher created a website to better inform students of the renewal process and the benefits of living on-campus. More than 200 BHC upperdivision students participated in this study through interviews and surveys. Quantitative results of the study indicated a positive and significant correlation between students who believe it costs less to live on campus, enjoy living on campus, interact with faculty and staff outside of the classroom with intent to live on campus the next academic year. Students who felt their currently living situation had a positive impact on their overall emotional/mental wellbeing, feel a sense of community or connection to others, and feel more connected because they live on campus are more likely to intend to live on campus. Students who were surveyed after the implementation of the renewal website believed it cost less to live on campus than off campus, felt that it was easier to navigate the application, and felt that they had a better understanding of the renewal process. Qualitative results of the study indicated students were deciding to live off campus due to the limited room options and the cost of on-campus housing. Students did not feel that there was a sense of community in BHC upperdivision housing, but they did feel like living on-campus was convenient and opened opportunities to get involved. The renewal website did not have an effect on students’ behavior, knowledge and intent to renew housing, and the renewal process was easy to navigate for some of the participants and difficult to navigate for the other participants.
ContributorsLaRoche, Catherine-Ann Hiileilani (Author) / Chen, Ying-Chih (Thesis advisor) / Hermann, Kristen J (Committee member) / Staton, Shannon (Committee member) / Arizona State University (Publisher)
Created2020
Description
Satisfying the ever-increasing demand for electricity while maintaining sustainability and eco-friendliness has become a key challenge for humanity. Around 70% of energy is rejected as heat from different sectors. Thermoelectric energy harvesting has immense potential to convert this heat into electricity in an environmentally friendly manner. However, low efficiency and high manufacturing costs inhibit the widespread application of thermoelectric devices. In this work, an inexpensive solution processing technique and a nanostructuring approach are utilized to create thermoelectric materials. Specifically, the solution-state and solid-state structure of a lead selenide (PbSe) precursor is characterized by different spectroscopic techniques. This precursor has shown promise for preparing thermoelectric lead selenide telluride (PbSexTe1-x) thin films. The precursor was prepared by reacting lead and diphenyl diselenide in different solvents. The characterization reveals the formation of a solvated lead(II) phenylselenolate complex which deepens the understanding of the formation of these precursors. Further, using slightly different chemistry, a low-temperature tin(II) selenide (SnSe) precursor was synthesized and identified as tin(IV) methylselenolate. The low transformation temperature makes it compatible with colloidal PbSe nanocrystals. The colloidal PbSe nanocrystals were chemically treated with a SnSe precursor and subjected to mild annealing to form conductive nanocomposites. Finally, the room temperature thermoelectric characterization of solution-processed PbSexTe1-x thin films is presented. This is followed by a setup development for temperature-dependent measurements and preliminary temperature-dependent measurements on PbSexTe1-x thin films.
ContributorsVartak, Prathamesh Bhalchandra (Author) / Wang, Robert Y. (Thesis advisor) / Wang, Liping (Committee member) / Trovitch, Ryan J. (Committee member) / Tongay, Sefaattin (Committee member) / Goodnick, Stephen M. (Committee member) / Arizona State University (Publisher)
Created2020
Description
This study examines determinants of the length of conflict between firms and the Internal Revenue Service (IRS). I hand collect firm disclosures of the number of years open for federal tax purposes to create a proxy for IRS conflict length. Using this proxy, I find evidence that larger firms, firms with more book-tax differences, and firms facing higher IRS attention and audit probabilities are associated with lengthier IRS conflicts. In contrast, firms with higher deferred tax assets, intangibles, return on assets, and firms disclosing participation in the Compliance Assurance Process program are associated with shorter IRS conflicts. Additional analyses show IRS conflict length is positively associated with manager risk preferences and poor tax accounting quality. I also find lengthier IRS conflicts are associated with higher future tax risk and higher audit fees. Tax controversy is becoming increasingly important for firms but remains relatively understudied. I provide empirical evidence on cross-sectional variation in IRS conflict length.
ContributorsPaparcuri, Christian Simon (Author) / Brown, Jennifer L. (Thesis advisor) / Huston, George R (Committee member) / White, Roger M. (Committee member) / Arizona State University (Publisher)
Created2020
Description
Aortic aneurysms and dissections are life threatening conditions addressed by replacing damaged sections of the aorta. Blood circulation must be halted to facilitate repairs. Ischemia places the body, especially the brain, at risk of damage. Deep hypothermia circulatory arrest (DHCA) is employed to protect patients and provide time for surgeons to complete repairs on the basis that reducing body temperature suppresses the metabolic rate. Supplementary surgical techniques can be employed to reinforce the brain's protection and increase the duration circulation can be suspended. Even then, protection is not completely guaranteed though. A medical condition that can arise early in recovery is postoperative delirium, which is correlated with poor long term outcome. This study develops a methodology to intraoperatively monitor neurophysiology through electroencephalography (EEG) and anticipate postoperative delirium. The earliest opportunity to detect occurrences of complications through EEG is immediately following DHCA during warming. The first observable electrophysiological activity after being completely suppressed is a phenomenon known as burst suppression, which is related to the brain's metabolic state and recovery of nominal neurological function. A metric termed burst suppression duty cycle (BSDC) is developed to characterize the changing electrophysiological dynamics. Predictions of postoperative delirium incidences are made by identifying deviations in the way these dynamics evolve. Sixteen cases are examined in this study. Accurate predictions can be made, where on average 89.74% of cases are correctly classified when burst suppression concludes and 78.10% when burst suppression begins. The best case receiver operating characteristic curve has an area under its convex hull of 0.8988, whereas the worst case area under the hull is 0.7889. These results demonstrate the feasibility of monitoring BSDC to anticipate postoperative delirium during burst suppression. They also motivate a further analysis on identifying footprints of causal mechanisms of neural injury within BSDC. Being able to raise warning signs of postoperative delirium early provides an opportunity to intervene and potentially avert neurological complications. Doing so would improve the success rate and quality of life after surgery.
ContributorsMa, Owen (Author) / Bliss, Daniel W (Thesis advisor) / Berisha, Visar (Committee member) / Kosut, Oliver (Committee member) / Brewer, Gene (Committee member) / Arizona State University (Publisher)
Created2020
Description
Discretion is central to policing. The way officers use their discretion is influenced by situational, officer, and neighborhood-level factors. Concerns that discretion could be used differentially across neighborhoods have resulted in calls for increased police transparency and accountability. Body-worn cameras (BWCs) have been promoted to further these goals through increasing oversight of police-citizen encounters. The implication is that BWCs will increase officer self-awareness and result in more equitable outcomes. Prior researchers have largely evaluated the direct impact of BWCs. Researchers have yet to examine the potential for BWCs to moderate the influence of neighborhood context in individual incidents.
To address this gap, I use Phoenix Police Department data collected as part of a three-year randomized-controlled trial of BWCs to examine variation in police discretion. These data include over 1.5 million police-citizen contacts nested within 826 officers and 388 neighborhoods. I examine two research questions. First, how do proactivity, arrests, and use of force vary depending on situational, officer, and neighborhood contexts? This provides a baseline for my next research question. Second, examining the same contexts and outcomes, do BWCs moderate the influence of neighborhood factors on police behavior? As such, I examine the untested, though heavily promoted, argument that BWCs will reduce the influence of extralegal factors on officer behavior.
Using cross-classified logistic regression models, I found that situational, officer, and neighborhood factors all influenced proactivity, arrest, and use of force. BWCs were associated with a lower likelihood of proactivity, but an increased likelihood of arrest and use of force. Officers were more proactive and were more likely to conduct arrests in immigrant and Hispanic neighborhoods. The moderating effects suggest that officers were even more likely to proactively initiate contacts and conduct arrests in immigrant and Hispanic neighborhoods when BWCs were activated. However, after BWCs were deployed, use of force was significantly less likely to occur in black neighborhoods. Given that high-profile police use of force incidents involving black suspects are often cited as a major impetus for the adoption of BWCs in American police agencies, this finding is a key contribution to the literature.
To address this gap, I use Phoenix Police Department data collected as part of a three-year randomized-controlled trial of BWCs to examine variation in police discretion. These data include over 1.5 million police-citizen contacts nested within 826 officers and 388 neighborhoods. I examine two research questions. First, how do proactivity, arrests, and use of force vary depending on situational, officer, and neighborhood contexts? This provides a baseline for my next research question. Second, examining the same contexts and outcomes, do BWCs moderate the influence of neighborhood factors on police behavior? As such, I examine the untested, though heavily promoted, argument that BWCs will reduce the influence of extralegal factors on officer behavior.
Using cross-classified logistic regression models, I found that situational, officer, and neighborhood factors all influenced proactivity, arrest, and use of force. BWCs were associated with a lower likelihood of proactivity, but an increased likelihood of arrest and use of force. Officers were more proactive and were more likely to conduct arrests in immigrant and Hispanic neighborhoods. The moderating effects suggest that officers were even more likely to proactively initiate contacts and conduct arrests in immigrant and Hispanic neighborhoods when BWCs were activated. However, after BWCs were deployed, use of force was significantly less likely to occur in black neighborhoods. Given that high-profile police use of force incidents involving black suspects are often cited as a major impetus for the adoption of BWCs in American police agencies, this finding is a key contribution to the literature.
ContributorsHuff, Jessica (Author) / Katz, Charles M. (Thesis advisor) / Wallace, Danielle (Committee member) / Maguire, Edward R. (Committee member) / Arizona State University (Publisher)
Created2020
Description
The purpose of this study was to understand how community members within a segregated school district approached racial inequities. I conducted a ¬nineteen-month-long ethnography using a critical Participatory Action Research (PAR) approach to explore how members in a community activist group called Eliminate Racism interacted and worked with school district officials. My goal was to identify and examine how community members addressed racially inequitable policies and practices in the Midwestern city of Pinecreek (pseudonym) in the context of a school district that had undergone two school desegregation lawsuits. I conducted 32 interviews with 24 individuals, including teachers and school leaders, parents, and community members.
This study answers three research questions: (1) What strategies did the community activist group use to influence local education policy for addressing racism in the schools? (2) How did community participation influence local education policy? (3) What were the motivating factors for individuals’ involvement in issues of local school segregation? To answer these questions, I used concepts from Critical Race Theory and Social Capital Theory. I employ Putnam’s and Putnam and Campbell’s social capital, Warren’s civic participation, Bonilla-Silva’s color-blind racism, Yosso’s community cultural wealth and religio-civics. My analysis shows that the community group used the social capital and community cultural wealth of its members to create partnerships with district officials. Although Eliminate Racism did not meet its goals, it established itself as a legitimate organization within the community, successfully drawing together residents throughout the city to bring attention to racism in the schools.
The study’s results encourage school and district leaders to constantly bring race to the forefront of their decision-making processes and to question how policy implementation affects minoritized students. This research also suggests that strategies from this community group can be adopted or avoided by other antiracist groups undertaking similar work. Finally, it provides an example of how to employ critical PAR methods into ethnography, as it notes the ways that researcher positionality and status can be leveraged by community groups to support the legitimacy of their mission and work.
This study answers three research questions: (1) What strategies did the community activist group use to influence local education policy for addressing racism in the schools? (2) How did community participation influence local education policy? (3) What were the motivating factors for individuals’ involvement in issues of local school segregation? To answer these questions, I used concepts from Critical Race Theory and Social Capital Theory. I employ Putnam’s and Putnam and Campbell’s social capital, Warren’s civic participation, Bonilla-Silva’s color-blind racism, Yosso’s community cultural wealth and religio-civics. My analysis shows that the community group used the social capital and community cultural wealth of its members to create partnerships with district officials. Although Eliminate Racism did not meet its goals, it established itself as a legitimate organization within the community, successfully drawing together residents throughout the city to bring attention to racism in the schools.
The study’s results encourage school and district leaders to constantly bring race to the forefront of their decision-making processes and to question how policy implementation affects minoritized students. This research also suggests that strategies from this community group can be adopted or avoided by other antiracist groups undertaking similar work. Finally, it provides an example of how to employ critical PAR methods into ethnography, as it notes the ways that researcher positionality and status can be leveraged by community groups to support the legitimacy of their mission and work.
ContributorsWinn, Kevin (Author) / Fischman, Gustavo E (Thesis advisor) / Berliner, David C. (Committee member) / Powers, Jeanne M. (Committee member) / Sampson, Carrie (Committee member) / Bebout, Lee (Committee member) / Arizona State University (Publisher)
Created2020
Description
This dissertation examines the concept of gendered space as it applies to prayer spaces in Islam, particularly mosques and mushollas exclusively for women. Gendered space is often articulated as space created by those with power—men— in order to control women’s access to knowledge and to put them at a disadvantage, thereby maintaining patriarchal structures. Yet, when groups are relegated to or voluntarily choose the margins, those within may transform the margins into sites of empowerment. I consider the dynamics of religious space, including its construction, maintenance, and activities performed by its inhabitants, by focusing on the Women’s Mosque of America in Los Angeles, which opened in 2015, and Musholla ‘Aisyiyah Ranting Karangkajen and Musholla ‘Aisyiyah Kauman, which have been in operation since the 1920s in Yogyakarta, Indonesia. This work is based on ethnographies of the attendees of these three sites in order to explore the experiences of the women and the impact both traditional religious spaces and religious spaces exclusive to women have on their spirituality, ideas of authority, and sense of community. The Women’s Mosque of America and ‘Aisyiyah women’s mushollas create opportunities for women to participate in and contribute to Muslim communities by basing their efforts on the Sunnah and examples of female piety and leadership in early Islam. The present research challenges the argument that gendered spaces are inherently detrimental and must be remedied by a de-gendering process. Rather, the accounts of the attendees of the Women’s Mosque of America and ‘Aisyiyah women’s mushollas speak to the possibilities of creating an exclusive space that privileges those within it, fulfilling the women’s desire of religious knowledge, leadership, community, and piety in ways that traditional religious spaces have at times fallen short.
ContributorsElias Jenner, Bethany Mintha (Author) / Gallab, Abdullahi (Thesis advisor) / Ali, Souad (Committee member) / Brenner, Suzanne (Committee member) / Arizona State University (Publisher)
Created2020
Description
Objectives. This study primarily explored the relationship between family meal frequency and youth intake of fruits and vegetables (FV) and added sugar from sugar-sweetened beverages (SSBs) in a population of Latinx parents and their middle school children. The study secondarily explored factors influencing family meal frequency; specifically, whether parent education level, income level, acculturation level, and food insecurity are associated with family meal frequency.
Methods. Latinx parents and their 6th-8th grade children were recruited from eligible middle schools in Maricopa County to participate in a larger intervention study. A sample of parent-youth dyads from the first cohort of the larger study was selected for cross-sectional analysis of baseline data in this study (n=124). Participants completed a survey requesting demographics, family meal habits, and dietary intake. Participants were asked to report annual income, education level, and number of family meals in the home in the past week. They were also asked to complete an Acculturation Rating Scale for Mexican Americans, a 6-item Household Food Security Questionnaire, and a 26-question Dietary Screener Questionnaire. Analyses were run using Spearman’s Rank Correlation test and a Chi Square test of Independence.
Results. Mean daily youth intake of FV was 2.7 ± 1.4 cup equivalents, and daily youth intake of sugars from SSBs was 8.6 ± 4.9 teaspoon equivalents per day. Fifty percent of parents reported 7 or more family meals per week, while 38.7% reported 3-6 family meals per week and 11.3% reported 2 or fewer family meals per week. There was no significant association between family meal frequency and youth FV (r=-0.154; p=0.256) or added sugar from SSBs (r=0.027; p=0.807) intake. Similarly, results from Chi Square analyses suggested there was no association between family meal frequency and parent income level (p=0.392), Mexican-oriented acculturation level (p=0.591), Anglo-oriented acculturation level (p=0.052) and food insecurity (p=0.754). In contrast, a significant association between parent education and family meal frequency was found (p=0.014).
Conclusions. Parent education may play a role in shaping family meal practices in Latinx families. More research is needed to further understand this relationship and the relationship between family meal habits and youth dietary intake.
Methods. Latinx parents and their 6th-8th grade children were recruited from eligible middle schools in Maricopa County to participate in a larger intervention study. A sample of parent-youth dyads from the first cohort of the larger study was selected for cross-sectional analysis of baseline data in this study (n=124). Participants completed a survey requesting demographics, family meal habits, and dietary intake. Participants were asked to report annual income, education level, and number of family meals in the home in the past week. They were also asked to complete an Acculturation Rating Scale for Mexican Americans, a 6-item Household Food Security Questionnaire, and a 26-question Dietary Screener Questionnaire. Analyses were run using Spearman’s Rank Correlation test and a Chi Square test of Independence.
Results. Mean daily youth intake of FV was 2.7 ± 1.4 cup equivalents, and daily youth intake of sugars from SSBs was 8.6 ± 4.9 teaspoon equivalents per day. Fifty percent of parents reported 7 or more family meals per week, while 38.7% reported 3-6 family meals per week and 11.3% reported 2 or fewer family meals per week. There was no significant association between family meal frequency and youth FV (r=-0.154; p=0.256) or added sugar from SSBs (r=0.027; p=0.807) intake. Similarly, results from Chi Square analyses suggested there was no association between family meal frequency and parent income level (p=0.392), Mexican-oriented acculturation level (p=0.591), Anglo-oriented acculturation level (p=0.052) and food insecurity (p=0.754). In contrast, a significant association between parent education and family meal frequency was found (p=0.014).
Conclusions. Parent education may play a role in shaping family meal practices in Latinx families. More research is needed to further understand this relationship and the relationship between family meal habits and youth dietary intake.
ContributorsMasek, Emily (Author) / Vega-Lopez, Sonia (Thesis advisor) / Bruening, Meredith (Committee member) / Ayers, Stephanie (Committee member) / Arizona State University (Publisher)
Created2020
Description
Humans have an excellent ability to analyze and process information from multiple domains. They also possess the ability to apply the same decision-making process when the situation is familiar with their previous experience.
Inspired by human's ability to remember past experiences and apply the same when a similar situation occurs, the research community has attempted to augment memory with Neural Network to store the previously learned information. Together with this, the community has also developed mechanisms to perform domain-specific weight switching to handle multiple domains using a single model. Notably, the two research fields work independently, and the goal of this dissertation is to combine their capabilities.
This dissertation introduces a Neural Network module augmented with two external memories, one allowing the network to read and write the information and another to perform domain-specific weight switching. Two learning tasks are proposed in this work to investigate the model performance - solving mathematics operations sequence and action based on color sequence identification. A wide range of experiments with these two tasks verify the model's learning capabilities.
Inspired by human's ability to remember past experiences and apply the same when a similar situation occurs, the research community has attempted to augment memory with Neural Network to store the previously learned information. Together with this, the community has also developed mechanisms to perform domain-specific weight switching to handle multiple domains using a single model. Notably, the two research fields work independently, and the goal of this dissertation is to combine their capabilities.
This dissertation introduces a Neural Network module augmented with two external memories, one allowing the network to read and write the information and another to perform domain-specific weight switching. Two learning tasks are proposed in this work to investigate the model performance - solving mathematics operations sequence and action based on color sequence identification. A wide range of experiments with these two tasks verify the model's learning capabilities.
ContributorsPatel, Deep Chittranjan (Author) / Ben Amor, Hani (Thesis advisor) / Banerjee, Ayan (Committee member) / McDaniel, Troy (Committee member) / Arizona State University (Publisher)
Created2020
Description
Impermanence is constant within the world humans live in; the physical environment is ever-changing, parallel with human evolution. Although the moment of a human lifespan is fleeting in comparison to their surrounding landscapes, the evidence of movement that lapses through time and space in relation to body and place reveals a hidden dance that soars across the history of humankind. This document explores the relationship between moving bodies and various environments, specifically how an individual’s perception of place influences the way people dance. Given the author’s background as a choreographer, performer, and filmmaker, the goal and method of this document is to understand the author’s and his ensemble of dancers’ perceived senses within a given geographic environment and to merge personal dialect in an artistic product. Ultimately, what was found was translating into an evening-length, movement-centered presentation.
The author's curiosity with foreign landscapes and his exploratory spirit are the driving forces for this project. Before arriving at the thesis topic, the author knew that environmental exploration and dance would be at the forefront of the research. Similar to a museum exhibition context, this document yearns for variety, and studies the environments through an event that encapsulates it all. This document explores the author’s multiple artistic interests in photography, film, and live performance, all of which were presented in a single event.
The author's curiosity with foreign landscapes and his exploratory spirit are the driving forces for this project. Before arriving at the thesis topic, the author knew that environmental exploration and dance would be at the forefront of the research. Similar to a museum exhibition context, this document yearns for variety, and studies the environments through an event that encapsulates it all. This document explores the author’s multiple artistic interests in photography, film, and live performance, all of which were presented in a single event.
ContributorsFung, Lawrence (Author) / White, Marcus (Thesis advisor) / Standley, Eileen (Committee member) / Amazeen, Eric (Committee member) / Arizona State University (Publisher)
Created2020