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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.


Date Range
2004 2018


This work describes the development of a device for measuring CO2 in breath, which has applications in monitoring a variety of health issues, such as Chronic Obstructive Pulmonary Disease (COPD), asthma, and cardiovascular disease. The device takes advantage of colorimetric sensing technology in order to maintain a low cost and high user-friendliness. The sensor consists of a pH dye, reactive element, and base coated on a highly porous Teflon membrane. The transmittance of the sensor is measured in the device via a simple LED/photodiode system, along with the flow rate, ambient relative humidity, and barometric pressure. The flow is measured ...

Contributors
Bridgeman, Devon, Forzani, Erica S, Nikkhah, Mehdi, et al.
Created Date
2017

The primary objective of this study was to revise a measure of exogenous instrumentality, part of a larger scale known as the Perceptions of Instrumentality Scale (Husman, Derryberry, Crowson, & Lomax, 2004) used to measure future oriented student value for course content. Study 1 piloted the revised items, explored the factor structure, and provided initial evidence for the reliability and validity of the revised scale. Study 2 provided additional reliability evidence but a factor analysis with the original and revised scale items revealed that the revised scale was measuring a distinct and separate construct that was not exogenous instrumentality. Here ...

Contributors
Puruhito, Krista Kay, Husman, Jenefer, Glenberg, Arthur, et al.
Created Date
2017

Data from a total of 282 online web applications was collected, and accounts for 230 of those web applications were created in order to gather data about authentication practices, multistep authentication practices, security question practices, fallback authentication practices, and other security practices for online accounts. The account creation and data collection was done between June 2016 and April 2017. The password strengths for online accounts were analyzed and password strength data was compared to existing data. Security questions used by online accounts were evaluated for security and usability, and fallback authentication practices were assessed based on their adherence to best ...

Contributors
Gutierrez, Garrett, Bazzi, Rida, Ahn, Gail-Joon, et al.
Created Date
2017

Constructed treatment wetlands (CTW) have been a cost-efficient technological solution to treat different types of wastewater but may also be sources of emitters of methane (CH4) and nitrous oxide (N2O). Thus, my objective for this dissertation was to investigate CH4 and N2O fluxes via multiple pathways from the Tres Rios CTW located in Phoenix, AZ, USA. I measured gas fluxes from the CTW along a whole-system gradient (from inflow to outflow) and a within-marsh gradient (shoreline, middle, and open water sites). I found higher diffusive CH4 release in the summer compared to spring and winter seasons. Along the whole-system gradient, ...

Contributors
Ramos, Jorge, Childers, Daniel L, Grimm, Nancy B, et al.
Created Date
2017

This dissertation shares findings from a qualitative case study of Latina adolescent girls (ninth and 10th graders) and their mothers and fathers participating in Somos Escritores/We Are Writers. Somos Escritores was a five-week bilingual writing workshop for Latina adolescent girls and their mothers and fathers that invited them to write, draw, and share stories from their lived realities on a variety of topics relevant to their lives. The stories, voices, experiences, and ways of knowing of the Latina adolescent girls, mothers, and fathers who allowed me a window into their lives are at the center of this study. This study ...

Contributors
Flores, Tracey Flores, Blasingame, James B., Vega, Sujey, et al.
Created Date
2017

Highway safety is a major priority for the public and for transportation agencies. Pavement distresses directly affect ride quality, and indirectly contribute to driver distraction, vehicle operation, and accidents. In this study, analysis was performed on highways in the states of Arizona, North Carolina and Maryland for years between 2013 and 2015 in order to investigate the relationship between accident rate and pavement roughness and rutting. Two main types of data were collected: crash data from the accident records and roughness and rut depth data from the pavement management system database in each state. Crash rates were calculated using the ...

Contributors
Vinayakamurthy, Mounica, Mamlouk, Michael S, Underwood, Benjamin, et al.
Created Date
2017

The following is a case study composed of three workflow investigations at the open source software development (OSSD) based Apache Software Foundation (Apache). I start with an examination of the workload inequality within the Apache, particularly with regard to requirements writing. I established that the stronger a participant's experience indicators are, the more likely they are to propose a requirement that is not a defect and the more likely the requirement is eventually implemented. Requirements at Apache are divided into work tickets (tickets). In our second investigation, I reported many insights into the distribution patterns of these tickets. The participants ...

Contributors
Panos, Ryan Charles, Collofello, James, Fowler, John, et al.
Created Date
2017

Clinicians confront formidable challenges with information management and coordination activities. When not properly integrated into clinical workflow, technologies can further burden clinicians’ cognitive resources, which is associated with medical errors and risks to patient safety. An understanding of workflow is necessary to redesign information technologies (IT) that better support clinical processes. This is particularly important in surgical care, which is among the most clinical and resource intensive settings in healthcare, and is associated with a high rate of adverse events. There are a growing number of tools to study workflow; however, few produce the kinds of in-depth analyses needed to ...

Contributors
Furniss, Stephanie Kohli, Kaufman, David R, Grando, M. Adela, et al.
Created Date
2017

Serious play—the notion of bringing the benefits of play to bear on work-related tasks—is receiving more attention as a remedy to many challenges of the modern knowledge economy. Exploring and defining the role of serious play approaches to facilitate collaborative problem-solving and value creation, this dissertation consists of four related research papers. The first research paper (RP1) reconciles three different conceptualizations of knowledge into a new theory of knowledge. This pluralistic definition allows knowledge to change character across the span of the value creation process. The paper further introduces a model called the Wheel of Knowledge (WoK) for mobilizing knowledge ...

Contributors
Nørgaard Jensen, Camilla, Seager, Thomas P, Selin, Cynthia L, et al.
Created Date
2017

The present study explored longitudinal associations between self-esteem and a specific dimension of gender identity (GI) and ethnic-racial identity (ERI), namely felt pressure from family and peers to act or behave in either gender or race/ethnic-accordant ways, among a sample of 750 African American and Latino/a middle school students (M = 12.10 years, SD = .97 years) in a southwestern U.S. city. Participants completed measures of self-esteem and GI and ERI felt pressure from family and from peers at two time points. Data were analyzed through bivariate correlation and hierarchical multiple linear regression analyses. Hierarchical multiple linear regression results revealed ...

Contributors
Aoyagi, Keiko, Santos, Carlos E, Tran, Giac-Thao, et al.
Created Date
2017