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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.


Contributor
Date Range
2004 2020


Over 35% of multiracial college students fail to earn a degree, which can have significant economic and health costs over their lifespan. This study aimed to better understand college and psychological adjustment among multiracial college students of Hispanic/Latinx and White non-Hispanic descent by examining students’ racial identities and use of resilience resources. Latent profiles of identity were identified to better understand how different aspects of racial identity are clustered in this population. Multiracial college students (N=221) reported on racial identity as measured on multiple dimensions: Hispanic/Latinx identity, Hispanic/Latinx cultural orientation, White identity, identity integration, shifting expressions of identity, and identity …

Contributors
Jewell, Shannon, Luecken, Linda J, Jackson, Kelly, et al.
Created Date
2020

Chronic diseases, such as diabetes, heart disease, and cancer are leading causes of death in the United States. Although they result from a host of personal and environmental factors, diet remains a critical way to reduce the risk. Plant-based diets in particular are associated with reduction in risk for chronic disease due to an intake that closely mirrors the Dietary Guidelines for fruit and vegetable consumption, fiber, and fat intake. Additionally, plant-based diets offer a sustainable alternative in relation to food production as they often require fewer natural resources overall. While there are many benefits to following a plant-based diet, …

Contributors
Incollingo, April, Wharton, Christopher, Johnston, Carol, et al.
Created Date
2020

Traditional autonomy within clinical supervision was reinterpreted by incorporating culturally-encompassing autonomy types (individuating and relating autonomy) from the dual autonomy scale. The relations of vertical collectivism and autonomy measures were examined. Lastly, potential moderating effects of vertical collectivism on experience level and autonomy were assessed. The sample consisted of 404 counseling trainees enrolled in graduate programs across the US, aged between 21 and 68. Results from the confirmatory factor analysis supported the proposed two-factor structure of individuating and relating autonomy among counseling trainees for the adapted dual autonomy scale. Results indicated that individuating autonomy was moderately correlated with relating and …

Contributors
Shi, Yue, Tracey, Terence, Bludworth, James, et al.
Created Date
2020

The traditional access control system suffers from the problem of separation of data ownership and management. It poses data security issues in application scenarios such as cloud computing and blockchain where the data owners either do not trust the data storage provider or even do not know who would have access to their data once they are appended to the chain. In these scenarios, the data owner actually loses control of the data once they are uploaded to the outside storage. Encryption-before-uploading is the way to solve this issue, however traditional encryption schemes such as AES, RSA, ECC, bring about …

Contributors
Dong, Qiuxiang, Huang, Dijiang, Sen, Arunabha, et al.
Created Date
2020

Self-control has been shown to be an important influence behind a variety of risk and protective behaviors, such as substance abuse. Although prior research points to the existence of multiple dimensions of self-control, this concept is not consistently defined and frequently only studied as a conglomerate in clinical research. The current study sought to examine how two experimental manipulations of subcomponents of self-control (motivation and self-efficacy) affect real-world consumptive behavior after accounting for executive function. Additionally, the validity and reliability of a brief state survey measure of perceived self-control capacity, internal motivation, and external motivation was tested. The goal was …

Contributors
Papova, Anna, Corbin, William R, Brewer, Gene, et al.
Created Date
2020

The construct of adult emotional intelligence has gained increasing attention over the last 15 years given its significant socioemotional implications for the ability to label, understand, and regulate emotions. There is a gap, however, in understanding how emotional intelligence develops in children. Parenting is one of the most salient predictors of children’s behavior and the current study investigated its prospective link to children’s emotional intelligence. More preceisely, this study took a differentiated approach to parenting by examining the distinct contributions of maternal sensitivity and emotion socialization to children’s emotional intelligence. In addition, executive function, considered a “conductor” of higher-order skills …

Contributors
Ross, Emily, Crnic, Keith, Luecken, Linda, et al.
Created Date
2020

Healthy lifestyle behaviors including quality nutrition have been shown to successfully prevent chronic disease or minimize symptoms. However, many physicians lack the knowledge and skills to provide adequate nutrition counseling and education for their patients. A major component of this problem is that medical schools are not required to teach nutrition education. The purpose of this feasibility study was to compare the changes in the perceived importance of nutrition in the medical field in medical students before and after participating in a week-long interactive nutrition course in order to determine if a week-long course can positively influence students’ perceptions of …

Contributors
Baum, Makenna, Johnston, Carol, Levinson, Simin, et al.
Created Date
2020

In this study, I investigated supervisory practices (i.e., structure and facilitation) when training therapists of differing levels of experience and self-efficacy are working with clients presenting with varying levels of suicidal risk (i.e., low or high). While previous research has supported that trainees need and want less structure and direction from their supervisors and become more self-efficacious as they gain more experience, this same assumption may not hold for crisis situations, such as when clients present with suicidal risk. To examine how trainees rate the quality of clinical supervision when working with clients presented with varying levels of suicidal risk, …

Contributors
Holzapfel, Jenny, Tracey, Terence J.G., Bludworth, James, et al.
Created Date
2020

Computer science education is an increasingly vital area of study with various challenges that increase the difficulty level for new students resulting in higher attrition rates. As part of an effort to resolve this issue, a new visual programming language environment was developed for this research, the Visual IoT and Robotics Programming Language Environment (VIPLE). VIPLE is based on computational thinking and flowchart, which reduces the needs of memorization of detailed syntax in text-based programming languages. VIPLE has been used at Arizona State University (ASU) in multiple years and sections of FSE100 as well as in universities worldwide. Another major …

Contributors
De Luca, Gennaro, Chen, Yinong, Liu, Huan, et al.
Created Date
2020

Previous research used the context-free Big Five model of personality traits to predict social media behaviors. The perspective implicit in this research assumes that expression of the Big Five is free of situational context. This thesis challenges this assumption to address whether people express the same Big Five on social media as offline. In two studies, this thesis addressed three issues: (1) whether there are self-reported differences in the Big Five between social media/online and offline contexts, (2) whether a five-factor structure replicates in the offline and social media context reports, and (3) whether the predictive validity of the Big …

Contributors
Bunker, Cameron James, Kwan, Virginia S. Y., Edwards, Michael C., et al.
Created Date
2020

Robotic lower limb prostheses provide new opportunities to help transfemoral amputees regain mobility. However, their application is impeded by that the impedance control parameters need to be tuned and optimized manually by prosthetists for each individual user in different task environments. Reinforcement learning (RL) is capable of automatically learning from interacting with the environment. It becomes a natural candidate to replace human prosthetists to customize the control parameters. However, neither traditional RL approaches nor the popular deep RL approaches are readily suitable for learning with limited number of samples and samples with large variations. This dissertation aims to explore new …

Contributors
Gao, Xiang, Si, Jennie, Huang, He Helen, et al.
Created Date
2020

The interior of Earth is stratified due to gravity. Therefore, the lateral heterogeneities observed as seismic anomalies by seismologists are extremely interesting: they hold the key to understand the composition, thermal status and evolution of the Earth. This work investigates seismic anomalies inside Earth’s lowermost mantle and focuses on patch-like ultra-low velocity zones (ULVZs) found on Earth’s core-mantle boundary (CMB). Firstly, all previous ULVZ studies are compiled and ULVZ locations on the CMB are digitized. The result is a database, which is publicly available online. A key finding is that there is not a simple mapping between the locations of …

Contributors
Yu, Shule, Garnero, Edward J, Li, Mingming, et al.
Created Date
2020

Oral contraceptives are one of the most frequently used forms of birth control among young women. However, research has shown that this type of medication can contribute to negative changes in mood and diminished vitamin status. In particular, women taking oral contraceptives are at an increased risk of vitamin B6 deficiency due to changes in enzyme activity with estrogen intake. Depressed mood is one of the known symptoms of vitamin B6 deficiency as this vitamin acts as an essential cofactor in converting tryptophan to the neurotransmitter, serotonin. Lack of adequate levels of vitamin B6 therefore contribute to decreased production of …

Contributors
Curtin, Anne Clare, Johnston, Carol S, Whisner, Corrie M, et al.
Created Date
2020

Many researchers have seen the value blockchain can add to the field of voting and many protocols have been proposed to allow voting to be conducted in a way that takes advantage of blockchains distributed and immutable structure. While blockchains immutable structure can take the place of paper records in preventing tampering it by itself is insufficient to construct a trustworthy voting system with eligibility, privacy, verifiability, and fairness requirements. Many of the protocols which strive to keep voters votes confidential, but also allow for verifiability and eligibility requirements rely on either a blind signature provided by a central authority …

Contributors
Anderson, Brandon David, Yau, Stephen S., Dasgupta, Partha, et al.
Created Date
2020

Hysterectomy is the second most common gynecological surgery performed in women. Half of these surgeries involve removal of the uterus alone, and half involve concomitant removal of the ovaries. While the field has retained the notion that the nonpregnant uterus is dormant, more recent findings suggest that hysterectomy is associated with cognitive detriment. Of note, the clinical literature suggests that an earlier age at hysterectomy, with or without concomitant ovarian removal, increases dementia risk, implicating age at surgery as a variable of interest. While preclinical work in a rodent model of hysterectomy has demonstrated spatial working memory impairments, the role …

Contributors
Woner, Victoria, Bimonte-Nelson, Heather A, Trumble, Benjamin C, et al.
Created Date
2020

Mixed-ionic electronic conducting (MIEC) oxides have drawn much attention from researchers because of their potential in high temperature separation processes. Among many materials available, perovskite type and fluorite type oxides are the most studied for their excellent oxygen ion transport property. These oxides not only can be oxygen adsorbent or O2-permeable membranes themselves, but also can be incorporated with molten carbonate to form dual-phase membranes for CO2 separation. Oxygen sorption/desorption properties of perovskite oxides with and without oxygen vacancy were investigated first by thermogravimetric analysis (TGA) and fixed-bed experiments. The oxide with unique disorder-order phase transition during desorption exhibited an …

Contributors
Wu, Han-Chun, Lin, Jerry Y.S., Deng, Shuguang, et al.
Created Date
2020

Integrins are a family of αβ heterodimeric transmembrane receptors. As an important class of adhesion receptors, integrins mediate cell adhesion, migration, and transformation through bidirectional signaling across the plasma membrane. Among the 24 different types of integrins, which are notorious for their capacity to recognize multiple ligands, the leukocyte integrin αMβ2 (Mac-1) is the most promiscuous member. In contrast to other integrins, Mac1 is unique with respect to its preference for cationic ligands. In this thesis, a new Mac-1 cationic ligand named pleiotrophin (PTN) is uncovered. PTN is an important cytokine and growth factor. Its activities in mitogenesis and angiogenesis …

Contributors
Shen, Di, Wang, Xu, Van Horn, Wade, et al.
Created Date
2020

Ant colonies provide numerous opportunities to study communication systems that maintain the cohesion of eusocial groups. In many ant species, workers have retained their ovaries and the ability to produce male offspring; however, they generally refrain from producing their own sons when a fertile queen is present in the colony. Although mechanisms that facilitate the communication of the presence of a fertile queen to all members of the colony have been highly studied, those studies have often overlooked the added challenge faced by polydomous species, which divide their nests across as many as one hundred satellite nests resulting in workers …

Contributors
Ebie, Jessica, Liebig, Jürgen, Hölldobler, Bert, et al.
Created Date
2020

Mobile sources emit a number of different gases including nitrogen oxides (NOx) and volatile organic compounds (VOCs) as well as particulate matter (PM10, PM2.5). As a result, mobile sources are major contributors to urban air pollution and can be the dominant source of some local air pollution problems. In general, mobile sources are divided into two categories: on-road mobile sources and non-road mobile sources. In Maricopa County, the Maricopa County Air Quality Department prepares inventories of all local sources [11], [12]. These inventories report that for Maricopa County, on-road mobile sources emit about 23% of total PM2.5 annually, 58% of …

Contributors
Alboaijan, Fahad A M S, Fraser, Matthew, Andino, Jean, et al.
Created Date
2020

More than 200 hikers are rescued annually in the greater Phoenix area. This study examined the impact of hiking in hot (HOT), dry temperatures versus moderate (MOD) temperatures on dietary intake behaviors as well as markers of heat stress. Twelve recreational mountain hikers climbed “A” Mountain four consecutive times (4-miles) on a HOT day (WBGT=31.6 °C) and again on a MOD day (WBGT= 19.0 °C). Simulated food and fluid behavior allowed participants to bring what they normally would for a 4- mile hike and to consume both ad libitum. The following heat stress indicators (mean difference; p-value), were all significantly …

Contributors
Pelham, Emily Claire, Wardenaar, Floris, Whisner, Corrie, et al.
Created Date
2020

The Chinese Construction Industry has grown to be one of the largest construction markets in the world within the last 10 years. The size of the Chinese Construction Industry is on par with many developed nations, despite it being a developing country. Despite its rapid growth, the productivity and profitability of the Chinese Construction Industry is low compared to similar sized construction industries (United States, United Kingdom, etc.). In addition to the low efficiency of the Chinese Construction Industry, there is minimal documentation available showing the performance of the Chinese Construction Industry (projects completed on time, on budget, and customer …

Contributors
Chen, Yutian, Chong, Oswald, Kashiwagi, Dean T, et al.
Created Date
2020

Suction stabilized floats have been implemented into a variety of applications such as supporting wind turbines in off-shore wind farms and for stabilizing cargo ships. This thesis proposes an alternative use for the technology in creating a system of suction stabilized floats equipped with real time location modules to help first responders establish a localized coordinate system to assist in rescues. The floats create a stabilized platform for each anchor module due to the inverse slack tank effect established by the inner water chamber. The design of the float has also been proven to be stable in most cases of …

Contributors
Dye, Michaela, Redkar, Sangram, Sugar, Thomas, et al.
Created Date
2020

The primary focus of this research is the poorly understood relationship between water insufficiency and broad-scale social change, in the semi-arid lower Salt River Valley, in central Arizona. The overarching research question guiding this research is if water insufficiency could have prompted sociopolitical change among the Hohokam. Specifically, the research investigates if long-term water deficits were a catalyst for the two most consequential transformations in Hohokam history – the Preclassic/Classic transition (A.D. 1070-1100/1150) and the early to late Classic period transition (ca. A.D. 1300). This research used extensive historical aerial photographs and cultural resource management excavation data to complete the …

Contributors
Caseldine, Christopher Robert, Abbott, David R., Carr, Christopher G., et al.
Created Date
2020

Utilities infrastructure like the electric grid have been the target of more sophisticated cyberattacks designed to disrupt their operation and create social unrest and economical losses. Just in 2016, a cyberattack targeted the Ukrainian power grid and successfully caused a blackout that affected 225,000 customers. Industrial Control Systems (ICS) are a critical part of this infrastructure. Honeypots are one of the tools that help us capture attack data to better understand new and existing attack methods and strategies. Honeypots are computer systems purposefully left exposed to be broken into. They do not have any inherent value, instead, their value comes …

Contributors
Lopez Morales, Efren, Doupe, Adam, Ahn, Gail-Joon, et al.
Created Date
2020

Research shows that the subject of mathematics, although revered, remains a source of trepidation for many individuals, as they find it difficult to form a connection between the work they do on paper and their work's practical applications. This research study describes the impact of teaching a challenging introductive applied mathematics course on high school students' skills and attitudes towards mathematics in a college Summer Program. In the analysis of my research data, I identified several emerging changes in skills and attitudes towards mathematics, skills that high-school students needed or developed when taking the mathematical modeling course. Results indicated that …

Contributors
agoune, linda, Castillo-Chavez, Carlos, Castillo-Garsow, Carlos W, et al.
Created Date
2020

Visual object recognition has achieved great success with advancements in deep learning technologies. Notably, the existing recognition models have gained human-level performance on many of the recognition tasks. However, these models are data hungry, and their performance is constrained by the amount of training data. Inspired by the human ability to recognize object categories based on textual descriptions of objects and previous visual knowledge, the research community has extensively pursued the area of zero-shot learning. In this area of research, machine vision models are trained to recognize object categories that are not observed during the training process. Zero-shot learning models …

Contributors
Vyas, Maunil Rohitbhai, Panchanathan, Sethuraman, Venkateswara, Hemanth, et al.
Created Date
2020

As an urgency has emerged to prepare students to be future-ready, makerspaces have been developed as a technique for teachers to use in classrooms to build science, technology, engineering and math (STEM) skills. Makerspaces expose students to innovation and are powerful tools in training students to use science and engineering practices as they invent, discover and tinker. While indoor makerspaces have been studied in multiple settings, little research has been performed to understand the relevance of makerspaces in outdoor settings. The goal of this study was to aid 20 elementary teachers in developing their understanding of the usefulness and benefits …

Contributors
Estes, Patricia Chantel, Fischman, Gustavo, Keena, Kelly, et al.
Created Date
2020

The problem of practice addressed in this mixed methods action research study is the underachievement of fifth-grade students in mathematics. This study explores the effects of an innovation designed to help students develop a growth mindset by utilizing self-regulation strategies to improve academic growth in mathematics. Students’ underachievement in mathematics has been illustrated by both state and international assessments. Throughout the decades, mathematics instruction and reforms have varied, but overall students’ psychological needs have been neglected. This innovation was designed to develop students’ psychological characteristics regarding facing challenges in mathematics. For this purpose, two guiding theories were utilized to frame …

Contributors
Manchester, Sarah, Judson, Eugene, Moses, Lindsey, et al.
Created Date
2020

Workplace intrusions—unexpected encounters initiated by another person that disrupt an individual’s work—are generally characterized as negative experiences that deplete resources, increase role and information overload, and promote strain. My research challenges this consensus by arguing that intrusions may also provide benefits to the employees who are intruded upon. Specifically, I investigate how intrusions impact the extent to which employees engage in their own work—engagement—and the extent to which they engage with others at work—collaboration. I also investigate the indirect effects of different types of intrusions on employees’ task-focused and person-focused citizenship through these mechanisms. I tested my predictions utilizing experience …

Contributors
Bush, John, LePine, Jeff, Welsh, Dave, et al.
Created Date
2020

Humans perceive the environment using multiple modalities like vision, speech (language), touch, taste, and smell. The knowledge obtained from one modality usually complements the other. Learning through several modalities helps in constructing an accurate model of the environment. Most of the current vision and language models are modality-specific and, in many cases, extensively use deep-learning based attention mechanisms for learning powerful representations. This work discusses the role of attention in associating vision and language for generating shared representation. Language Image Transformer (LIT) is proposed for learning multi-modal representations of the environment. It uses a training objective based on Contrastive Predictive …

Contributors
Ramakrishnan, Raghavendran, Panchanathan, Sethuraman, Venkateswara, Hemanth Kumar, et al.
Created Date
2020

Presented in this thesis are two projects that fall under the umbrella of magnetically actuated electronics and robotics for medical applications. First, magnetically actuated tunable soft electronics are discussed in Chapter 2. Wearable and implantable soft electronics are clinically available and commonplace. However, these devices can be taken a step further to improve the lives of their users by adding remote tunability. The four electric units tested were planar inductors, axial inductors, capacitors and resistors. The devices were made of polydimethylsiloxane (PDMS) for flexibility with copper components for conductivity. The units were tuned using magnets and mobile components comprised of …

Contributors
Edwards, Dakota, Marvi, Hamidreza, Lee, Hyunglae, et al.
Created Date
2020

This thesis examines the rhetorical relationship between migrant death and American culture, with an emphasis on how postmortem treatment of the deceased gives shape to anti-migrant attitudes. By isolating one instance of death on the border and considering the discourse that ensued in the following two months, this research assesses mechanisms of a rhetoric of death (necrorhetoric) as they relate to sociopolitical constructions of the migrant. The political apparatus of the State as a natural extension of biopower confers upon it the authority to produce sacred life or bare life (homo sacer). This process of production creates conditions of being …

Contributors
Baumann, Natalie, Goggin, Maureen, Long, Elenore, et al.
Created Date
2020

The members of Generation Z are often referred to as "digital natives," having been born between 1995–2012, into a time of significant technological advancements. Members of Generation Z were between the ages of 7–24 years old in 2019. The world Generation Z knows has been impacted by the current technological environment including the use of personal smartphones and smart devices, the rise in social media use, and the preference of texting and instant messaging over voice/phone communications. The oldest members of Generation Z are just starting to enter the workforce. While there are studies on Generation Z's personal communication preferences …

Contributors
Janssen, Dawn, Carradini, Stephen, Harris, La Verne Abe, et al.
Created Date
2020

The Desert Southwest has no shortage of representations in literature, art, and film. Its aesthetics—open horizons, strange landscapes, and vast wilderness—inform and saturate the early Western films of John Ford, the paintings of Georgia O’Keeffe, Edward Abbey’s Desert Solitaire, and continue in today’s popular imaginations. My work acknowledges such contributions and then it challenges them: why are those names more widely associated with the Southwest than Luis Alberto Urrea, Alicia Gaspar de Alba, or Pat Mora? The project intersects the environmental humanities, critical theory, and cultural studies with the Desert Southwest. It explores the fullness of desert places with regard …

Contributors
Osuna, Celina, Broglio, Ronald, McHugh, Kevin, et al.
Created Date
2020

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 …

Contributors
Paparcuri, Christian Simon, Brown, Jennifer L, Huston, George R, et al.
Created Date
2020

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 …

Contributors
Ma, Owen, Bliss, Daniel W, Berisha, Visar, et al.
Created Date
2020

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, …

Contributors
Winn, Kevin, Fischman, Gustavo E, Berliner, David C, et al.
Created Date
2020

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 …

Contributors
Huff, Jessica, Katz, Charles M, Wallace, Danielle, et al.
Created Date
2020

Needle steering is an extension of manually inserted needles that allows for maneuverability within the body in order to avoid anatomical obstacles and correct for undesired placement errors. Research into needle steering predominantly exploits interaction forces between a beveled tip and the medium, controlling the direction of forces by applying rotations at the base of the needle shaft in order to steer. These systems are either manually or robotically advanced, but have not achieved clinical relevance due to a multitude of limitations including compression effects in the shaft that cause undesired tissue slicing, torsional friction forces and deflection at tissue …

Contributors
Petras, Alex, Marvi, Hamidreza, Yong, Sze Z., et al.
Created Date
2020

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 …

Contributors
LaRoche, Catherine-Ann Hiileilani, Chen, Ying-Chih, Hermann, Kristen J, et al.
Created Date
2020

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 …

Contributors
Vartak, Prathamesh Bhalchandra, Wang, Robert Y., Wang, Liping, et al.
Created Date
2020

ABSTRACT The cold and the flu are two of the most prevalent diseases in the world. Many over the counter (OTC) medications have been created to combat the symptoms of these illnesses. Some medications take a holistic approach by claiming to alleviate a wide range of symptoms, while others target a specific symptom. As these medications become more ubiquitous within the United State of America (USA), consumers form associations and mental models about the cold/flu field. The goal of Study 1 was to build a Pathfinder network based on the associations consumers make between cold/flu symptoms and medications. 100 participants, …

Contributors
Tendolkar, Tanvi Gopal, Branaghan, Russell, Chiou, Erin, et al.
Created Date
2020

Cancer is a worldwide burden in every aspect: physically, emotionally, and financially. A need for innovation in cancer research has led to a vast interdisciplinary effort to search for the next breakthrough. Mathematical modeling allows for a unique look into the underlying cellular dynamics and allows for testing treatment strategies without the need for clinical trials. This dissertation explores several iterations of a dendritic cell (DC) therapy model and correspondingly investigates what each iteration teaches about response to treatment. In Chapter 2, motivated by the work of de Pillis et al. (2013), a mathematical model employing six ordinary differential (ODEs) …

Contributors
Dickman, Lauren, Kuang, Yang, Baer, Steven M., et al.
Created Date
2020

My dissertation combines the notion of residential sorting from Tiebout (1956) with Grossman’s (1972) concept of a health production function to develop a new empirical framework for investigating what individuals’ residential location choices reveal about their valuation of amenities, the welfare effects of climate change, the forces underlying environmental justice, and the value of a statistical life. Location choices are affected by age, health, and financial constraints, and by exposure to local amenities that affect people’s health and longevity. Chapter 1 previews how I formalize this idea and investigate its empirical implications in three interrelated essays. Chapter 2 investigates interactions …

Contributors
Mathes, Sophie, Kuminoff, Nicolai V, Murphy, Alvin D, et al.
Created Date
2020

The present study aims to gain deeper insights into language attitudes in the educational context while contributing to the emerging field of advanced mixed, second language and heritage language (HL) courses. Considering that the majority of heritage language learners (HLLs) and second language learners (L2s) in the United States (US) are enrolled in mixed classrooms (Beaudrie, 2012; Carreira, 2016a, 2016b), the study of language attitudes regarding monolingual varieties, bilingual varieties, and L2 varieties is crucial to inform pedagogical best practices that serve both types of learners. Additionally, by analyzing the language attitudes of both types of students toward these three …

Contributors
Vana, Rosti Frank, Beaudrie, Sara, Cerrón-Palomino, Álvaro, et al.
Created Date
2020

Social animals benefit from the aggregation of knowledge and cognitive processing power. Part of this benefit comes from individual heterogeneity, which provides the basis to group-level strategies, such as division of labor and collective intelligence. In turn, the outcomes of collective choices, as well as the needs of the society at large, influence the behavior of individuals within it. My dissertation research addresses how the feedback between individual and group-level behavior affects individuals and promotes collective change. I study this question in the context of seed selection in the seed harvester ant, Pogonomyrmex californicus. I use both field and laboratory …

Contributors
Bespalova, Ioulia Ivanovna, Fewell, Jennifer, Hölldobler, Bert, et al.
Created Date
2020

This thesis focuses on serial crystallography studies with X-ray free electron lasers (XFEL) with a special emphasis on data analysis to investigate important processes in bioenergy conversion and medicinal applications. First, the work on photosynthesis focuses on time-resolved femtosecond crystallography studies of Photosystem II (PSII). The structural-dynamic studies of the water splitting reaction centering on PSII is a current hot topic of interest in the field, the goal of which is to capture snapshots of the structural changes during the Kok cycle. This thesis presents results from time-resolved serial femtosecond (fs) crystallography experiments (TR-SFX) where data sets are collected at …

Contributors
Ketawala, Gihan Kaushyal, Fromme, Petra, Liu, Wei, et al.
Created Date
2020

The 1973 Supreme Court case Roe v. Wade was a significant event in the story of fetal personhood—the story of whether embryos and fetuses are legal persons. Roe legalized abortion care in the United States (US). However, the story of fetal personhood began long before the 1970s. People have been talking about embryos, fetuses, and their status in science, the law, and society for centuries. I studied the history of fetal personhood in the United States, tracing its origins from Ancient Rome and Medieval England to its first appearance in a US courtroom in 1884 and then to the Supreme …

Contributors
Abboud, Carolina, Maienschein, Jane, Justice, George, et al.
Created Date
2020

Several states within the United States have recently passed the Victim Life Photo Act, which allows prosecutors to present photographs of alleged murder victims when they were alive during the guilt phase of a trial. Critics argue that these photographs do not offer any relevant information about the crime or the defendant’s potential guilt and might bias jurors to vote guilty based on their sympathy for the victim—perhaps disproportionally so for high-status victims. Two mock trial experiments tested whether online participants who viewed alleged murder victim photographs would convict more because they increase anger, disgust, fear, sadness, and/or sympathy. Mock …

Contributors
Adamoli, Madison Marie, Salerno, Jessica M, Neal, Tess, et al.
Created Date
2020

This thesis introduces a new robotic leg design with three degrees of freedom that can be adapted for both bipedal and quadrupedal locomotive systems, and serves as a blueprint for designers attempting to create low cost robot legs capable of balancing and walking. Currently, bipedal leg designs are mostly rigid and have not strongly taken into account the advantages/disadvantages of using an active ankle, as opposed to a passive ankle, for balancing. This design uses low-cost compliant materials, but the materials used are thick enough to mimic rigid properties under low stresses, so this paper will treat the links as …

Contributors
Shafa, Taha A, Aukes, Daniel M, Rogers, Bradley, et al.
Created Date
2020