ABOUT THE COLLECTION

The UA Master's Theses Collection provides open access to masters theses and reports produced at the University of Arizona, including theses submitted online from 2005-present and theses from 1895-2005 that were digitized from microfilm and print holdings, in addition to master's reports from the College of Architecture, Planning and Landscape Architecture from 1966 onwards. The collection includes hundreds of titles not available in ProQuest.

We have digitized the entire backfile of master's theses and doctoral dissertations that have been submitted to the University of Arizona Libraries - since 1895! If you can't find the item you want in the repository and would like to check its digitization status, please contact us.

The UA Master's Theses collection is not comprehensive; master's theses from 1993-2015 were only received and archived by the UA Library and ProQuest if the student chose to pay the optional archiving fee. The Library does not have copies of many master's theses submitted during this time period. Some academic departments may keep copies of theses submitted to their programs. Colleges and departments wishing to archive master's theses not available in the University Libraries are encouraged to contact us at repository@u.library.arizona.edu.

QUESTIONS?

Please refer to the Dissertations and Theses in the UA Libraries guide for more details about UA Theses and Dissertations, and to find materials that are not available online. Email repository@u.library.arizona.edu with your questions about UA Theses and Dissertations.


Recent Submissions

  • According to the Revolution: The Cuban Revolution in Cuban History and Cuban History in the Cuban Revolution

    Tschudy, James R. (The University of Arizona., 2005)
    This thesis combines the recent historiography on the Cuban Revolution with a theoretical approach to put forth a new mode of analysis for the ideological origin and guide of the Cuban Revolution. The role of Cuban history in the lexicon of the Cuban Revolution has been prominent, and it has provided the ideological background of the Revolution. The leadership's focus on Cuban history makes it organic in the Gramscian sense of organic versus traditional intellectuals. By analyzing the historical narrative with the assistance of the recent historiography, this thesis will show that the leadership of the 1959 Revolution had a blueprint for revolution, as well as a reference to the main obstacles to real change in Cuba: the power of the United States and the segment of the Cuban elite that willingly mortgaged sovereignty for economic and social stability in the vain of Cardoso and Falleto's analysis of dependency theory.
  • SAVAGES, SINNERS, AND SAINTS: THE HAWAIIAN KINGDOM AND THE IMPERIAL CONTEST, 1778-1839

    Kashay, Jennifer Fish (The University of Arizona., 2002)
    This dissertation uses the writings of sailors, traders, and diplomats, American missionaries, and Hawaiian chiefs, as well as anthropological theories and ethnographic insights about Hawaiian culture to examine the cultural milieu created by western sojourners in Hawaii, contestation over the interrelated issues of morality, sexuality, religion, economics, and politics that occurred with the arrival of American evangelists, and the ways in which Hawaiian chiefs and commoners negotiated a delicate and calculated path between the embattled imperialist forces in their islands. This study places Hawaiian experiences within the broader outlines of American social, religious, and expansionist history. It offers a distinctly new interpretation of imperial relations in Hawaii, one that others may choose to build upon. In the past two decades, scholars of postmodernism and subaltern studies have devised new approaches to examining western imperialism in Africa, India, and China. However, only a handful of scholarly works have focused on western imperialism in Hawaii. Following trends in colonial scholarship and anthropological theory, particularly the work of Marshall Sahlins, this study uses an ethnographic approach to explain how Hawaiians viewed the religious, social, political, and cultural changes that resulted from the presence of foreigners in their kingdom and their responses to the challenges of imperialism. As such, this dissertation is highly interdisciplinary and draws upon the secondary literature in anthropology, missiology, colonialism, and Native American history. The issue of Hawaiian sovereignty has received national attention in recent years. Most scholars date the loss of Hawaiian independence to the moment in 1893 when U.S. Marines helped dethrone Queen Lili'uokalani. In reality, the forces that led to the annexation of the islands to the United States began with Captain James Cook's 1778 arrival in Hawaii. By focusing on the complex relations between two polarized groups of foreigners-American missionaries and western traders, sailors, and diplomats-and Hawaiian chiefs and commoners, this study reveals how the combined effects of western economic, religious, cultural, and political imperialism, cultural disintegration, native factionalism, and chiefly miscalculation created the context for the loss of Hawaiian political and economic control after 1839, much earlier than previously asserted in the Iiterature.
  • THE POLITICAL HUMANISM OF THOMAS STARKEY: A STUDY OF HIS POLITICAL THOUGHT

    De Weese, Malcolm L. Jr. (The University of Arizona., 1967)
  • SAN FRANCISCO JOE: The Life Story of a Kibei

    Warnock, Marcia Dawn (The University of Arizona., 1993)
  • WESTERN NORTH CAROLINA MOUNTAIN MEN IN THE CONFEDERATE ARMY: AN ANALYSIS OF HOW BATTLEFIELD AND HOME FRONT EVENTS INFLUENCED THEIR PARTICIPATION DURING THE AMERICAN CIVIL WAR, 1861-1865

    Parson, Robert William (The University of Arizona., 2006)
    This "synthetic works narrative" effort1, examines how western North Carolina evolved through the experiences of its people on the home and war fronts in America's Civil War. Themes like race, class, gender, and ethnicity interacted in the political and social upheavals that caused this most cataclysmic war for and among Americans. Battlefield results directly and indirectly influenced the varying levels of commitment that mountain men and women made to sustain the Confederacy. Likewise home-front instability occurred as a result of policies implemented and actions taken to support the war effort against the Union invaders. Volunteers in 1861 knew why they were willing to fight. Some persisted but many did not as morale fell due to external pressures. Internal pressures wrought hard times at home, news of which adversely affected the commitment of those mountain soldiers who did not have the moral fiber to stay and chose to desert.
  • Temple E and Roman Identity in Early Roman Corinth

    Taga, Hayley (The University of Arizona., 2008)
  • "Thank God for the Deserts": Mormon Colonization, Environmental Change, and Climatic Variability in the Little Colorado River Watershed, 1873-1920

    Finger, Thomas David (The University of Arizona., 2006)
    Deep-seeded aspects of Mormon theology set ideological boundaries for how settlers in northern Arizona's Little Colorado River watershed could interact with the land and water. Rather than see the variable climate and hydrologic regime of the watershed as proof it could not support long-term intensive agriculture, the settlers viewed the desert through a religious lens. Deserts had to be redeemed into gardens if the settlers were to attain the Kingdom of God. A series of overlapping problems - social, economic, and environmental -beset the colony throughout the final two decades of the nineteenth century- among them a breakup of the communal order, the arrival of largescale cattle outfits, and prolonged drought. Faced with these difficulties, the settlers modified their ideology and transformed their environmental practices. Ironically, these efforts, based in contemporary scientific and secular understandings of water management also failed to remove settlers from their environmental constraints.
  • EL MANCO Y EL MARTIR: FUNERALS, THE FAMILY,AND POPULAR MEMORY OF THE ASSASSINATION OF ALVARO OBREGON, 1928-1929

    Lopez, Amanda Marie (The University of Arizona., 2004)
    This thesis explores the aftermath of the assassination of President-elect Alvaro Obregon in Mexico City on July 17, 1928. It recounts the details of his funeral ceremonies and the execution and funeral of his assassin, Jose de Leon Toral. The funerals present an opportunity to see how issues of nationality and gender are negotiated in cultural events. Furthermore, the thesis examines correspondence surrounding the assassination, including condolences and pardon requests, to demonstrate how men and women understood and accepted the concept of the reified Revolution. Finally, it discusses the memory of the assassination as expressed in corridos, literature, and commemorative events. This thesis demonstrates the effect of the assassination on the construction, reception, and memory of the myth of the Mexican Revolution and considers how issues of gender relate to the myth.
  • A Two-Stage Estimation of Elasticities for Disaggregated Salad Products

    Lobo, Andrew (The University of Arizona., 2018)
    Demand elasticities are estimated for seven lettuce and leafy green products through two-stage estimation using data from the 2015 National Consumer Panel. Products are aggregated into categories by the amount of convenience they offer the consumer. The two least-convenient good categories—unprocessed lettuce and fresh-processed lettuce—are found to be inferior goods, while more convenient goods are found to be normal or even luxury goods. All seven categories are found to be own-price elastic.
  • Application of Machine Learning Techniques for Prognosis of Traumatic Brain Injury Patients in Intensive Care Units

    Ehsani, Sina (The University of Arizona., 2018)
    With advances in digital health technologies and proliferation of big biomedical data in recent years, applications of Machine Learning (ML) in healthcare and medicine have gained significant attention. Modern Intensive Care Units (ICUs), in particular, are equipped to generate rich multimodal clinical data on critically-ill patients. In this thesis, we focus on applying machine learning techniques for prognostication of Traumatic Brain Injury (TBI) patients in ICU, which is the leading cause of death and disability among children and adults of age less than 44. We present two case studies to demonstrate the feasibility and applicability of machine learning techniques: one for mortality prediction in TBI patients and the second for extracting patterns from physiological data collected from TBI patients. For the case study I, clinical data including demographics, vital signs, and physiological data for the first 72 hours of TBI patients were extracted from the Medical Information Mart for Intensive Care III (MIMIC III) database. Several traditional supervised machine learning algorithms such as artificial neural network, support vector machine, and logistic regression were employed to construct prediction models. Bagging and Voting techniques were implemented to improve the performance of these algorithms. By comparing the performances of these algorithms, we showed that deploying voting techniques on several different ML models can improve the overall performance. These algorithms obtained the highest Area Under receiver operating characteristic Curve (AUC) of 0.91. For the case study II, an exploratory, secondary analysis of physiologic data of TBI patients from the Phase III trial of Progesterone for Traumatic Brain Injury, Experimental Clinical Treatment (PROTECT) was performed. Subspace clustering was used to extract relationships between various physiologic variables. For both studies, 10-fold cross validation was used for evaluation purposes.
  • Characterization of Dark Cycle of Chlorella sorokiniana

    Pinto, Crecilla Roshani (The University of Arizona., 2018)
    Concerns about climate change and depleting fossil fuel reserves have increased the need to find the efficient alternative source of energy. Over the years, algal biofuel research has received great attention and growth and physiological experiments solely on the productivity during the day has extensively been studied. In this research, the effect of light intensities and temperature on the growth pattern and biomass loss during night respiration of Chlorella sorokiniana was investigated. The experiments were conducted at light intensity of 234 μmol m-2 s-1, 134 μmol m-2 s-1 and 108 μmol m-2 s-1 and temperatures ranging from 20 ℃- 40 ℃. Assessment of growth during the complete batch cycle demonstrates the sawtooth pattern of growth which suggests that the percentage cell loss during night respiration has a tremendous negative impact on the overall biomass productivity which in turn impacts the biofuel yield. The experimental results demonstrate that the growth rate defined by the biomass accumulation during the linear phase was highest at high light intensities and at a temperature ranging between 25-32 ℃. Analysis of the night respiration cycle suggests that the loss of biomass is least when the cultures are grown at 134 μmol m-2 s-1 and 25℃. Overall analysis of the growth pattern during the day and the biomass loss during the night shows that the percentage loss in biomass was highest during the linear phase which suggests that temperature and light intensity play a huge role in the cultivation of algae.
  • Microfluidic Point-Of-Care Ecarin Based Assays for Monitoring Direct Thrombin Inhibitor Therapy

    Alouidor, Benjamin (The University of Arizona., 2018)
    Direct thrombin inhibitors (DTIs), such as dabigatran, have maintained steady outpatient use due to their high oral bioavailability and relatively safe “on-therapy” range. The creation of new intravenous antibody reversal agents, like Idarucizumab, have renewed DTI monitoring interests. Current clinical methods within the United States lack the capacity to quantify DTI concentrations across wide ranges. At present, the international gold standard in quantifying DTI therapeutic thresholds is the ecarin clotting time (ECT). The linear prolongation of the ECT is directly proportional to specific DTI concentrations and inversely proportional to absorbance. This work focused on the development of a microfluidic paper analytic device (µPAD) that can quantify DTI concentration within a patient’s whole blood sample. Capillary action propels a small blood sample to flow through the nitrocellulose paper channels. Digital images of sample migration are then automatically captured by our self-coded Raspberry Pi and/or the Samsung Galaxy S8 smartphone camera. Commercial wax printers were used to create these disposable low-cost µPAD chips. Both the flow length and the blue absorbance from the plasma front on the μPAD were measured, allowing simultaneous, dual assay of ecarin clotting test (ECT) and ecarin chromogenic assay (ECA). Statistically significant (p < 0.05) changes in flow and absorbance were observed within our translational research study. Currently there are no quantitative commercially available point of care (POC) tests for the ECT within the U.S. Implementation of the ECT will differentiate between true supratherapeutic incidents and limit the unwarranted use of reversal agents. Additionally, DTIs have proved useful in maintaining anticoagulation during mechanical circulatory support in heparin induced cytopenia (HIT) patients. Our hopes are that our device will provide caregivers and patients the tools to monitor DTI therapy within both in and/or outpatient settings.
  • 3D Endoscope Based on the Controlled Aberration Method

    Xu, Mohan (The University of Arizona., 2018)
    Surgeons use endoscopes to inspect the cavity of patient’s body in the minimal invasive surgery. However, the conventional 2D endoscopes cannot offer depth information. Surgeons might overshoot the targets due to the lack of depth perception. So, it is essential to develop the 3D endoscopes to overcome this problem. In current 3D imaging technologies, the stereo method and structured light method both require angle diversity. The controlled aberration method is a uniaxial depth measurement method. It only requires the projection pattern and the differential focus to implement depth measurement. It has potential to be applied in the endoscopic system. This research aims to develop a 3D endoscope prototype based on the controlled aberration method and prove it can implement depth measurement. The first part of the work is a simulation study to prove that the controlled aberration method can be scaled down and applied to an endoscopic system for the depth measurement. Then the prototype design was discussed with each element in the projection path and imaging path of the system. Two depth measurement experiments were conducted. One is based on the miniature camera placed next to the projection path, another is based on an on-axis DSLR with diffuser screens. It used diffuser screens as “detector” and DSLR to capture the transmitted image on the screen. These experiement results indicate that endoscope prototype with controlled aberration method can implememnt depth measurement. The mini camera configuration suffers from high distortion. It reduces the measurement accuracy. The DSLR configuration was developed to deal with the distortion problem. But the DSLR camera configuration is not applicable to the actual endoscope. Hence, the future work is to develop a controlled aberration prototype with co-axial projection and imaging path to capture the reflected pattern image of the scene and the optimization of the calibration and measurement processes for more accurate depth measurement.
  • Association between Diet Quality and Obesity-Related Cancer in Postmenopausal Hispanic Women: Results from the Women’s Health Initiative (WHI)

    Lopez-Pentecost, Melissa (The University of Arizona., 2018)
    The prevalence of obesity is higher in Hispanic women than for Non-Hispanic Whites (NHW) with rates of 45% and 33%, respectively; yet, Hispanic women have lower incidence of most obesity-related cancers as compared to NHW. Little is known about the role of diet, a modifiable risk factor, and obesity-related cancer risk in this population. Previous work in the Women’s Health Initiative (WHI) found that post-menopausal Hispanic women with higher adherence to the American Cancer Society (ACS) guidelines for diet and physical activity demonstrated lower cancer incidence. More specifically, Hispanic women with the highest adherence to ACS guidelines had a 47% risk reduction for any incident cancer. These data warrant further investigation of the relationship between diet and cancer risk in post-menopausal Hispanic women. The purpose of this project was to evaluate the association between diet quality, as measured by alternate Mediterranean Score (aMED), the Healthy Eating Index-2015 (HEI-2015), the Dietary Inflammatory Index (DII) and Mexican Diet (MexD) score, and incidence of obesity-related cancers among Hispanic postmenopausal women participating in the WHI. Baseline dietary intake of WHI clinical trial and observational study Hispanic women (N= 5,482), estimated from Food Frequency Questionnaires (FFQ), were scored for dietary quality. Scores can range from 0 to 9 for the aMED score, 0 to 100 for the HEI-2015, -8.87 to 7.98 for the DII, and from 0 to 12 for the MexD score. Scores were divided into quartiles of increasing score. Cox proportional hazard analyses adjusted for age, body mass index (BMI), smoking, alcohol, neighborhood socioeconomic status (NSES), diabetes, physical activity, and clinical trial arm(s) were performed to evaluate diet quality scores and obesity-related cancer risk. Among Hispanic postmenopausal women, there were 399 incident cases of obesity-related cancer over a period of 12 years. Congruent with national statistics, the most prevalent cancer types were breast (n= 207) and colorectal (n= 64 cancers). Mean diet quality scores were as follows; for aMED 3.5 ± 1.6, 56 ± 11.6 for HEI-2015, for DII -0.46 ± 1.9, and MexD 5.7 ± 1.9. Hazard Ratio (HR) for any cancer were 1.22 (95% CI= 0.92, 1.62) for aMED, 0.97 (95% CI= 0.75, 1,26) for HEI-2015, 0.96 (95% CI= 0.74, 1.24) for DII and 0.91 (95% CI= 0.71, 1.18) for MexD scores. For obesity-related cancer HR were 0.94 (95% CI= 0.66, 1.34) for aMED scores, 0.91 (95% CI= 0.66, 1.25) for the HEI-2015, 1.18 (0.86-1.62) for DII, and 0.97 (95% CI= 0.70, 1.33). These results suggest that higher scores representative of a higher diet quality for aMED, HEI-2015, and MexD, and lower DII scores, are not associated with total cancer and obesity-related cancer risk in postmenopausal Hispanic women enrolled in WHI.
  • An Evaluation of Seasonal Precipitation and Its Influence on Streamflow in the Missouri River Headwaters Using Multi-Century Tree-Ring Reconstructions

    Frederick, Sarah (The University of Arizona., 2018)
    The impacts of warming temperatures and declining snowpack on seasonal water yields in the Missouri River Headwaters are not well understood, revealing a gap in our understanding of regional hydroclimate and drivers of streamflow within the Upper Missouri River basin. This study presents the first annually-resolved tree-ring reconstruction of spring precipitation for the Missouri River Headwaters. This reconstruction along with existing tree-ring reconstructions of April 1 snow-water equivalence (SWE) and natural water year streamflow are used to detect variable influences of winter and spring precipitation on streamflow over past centuries, and relative to the modern period. By analyzing the relationship between seasonal precipitation and water year streamflow in the Missouri River Headwaters subbasin, this study seeks to expand our knowledge based on the instrumental record alone. The results suggest that spring precipitation has been a more consistent influence on water year streamflow in the Missouri River Headwaters over past centuries than winter snowpack. The strong relationship between April 1 SWE values and water year streamflow in the Missouri River Headwaters observed over much of the twentieth century is not found to be a consistent feature of these multi-century paleorecords. These findings suggest that April 1 SWE may not always be a reliable indicator of water year streamflow. Instead, the hydroclimate influences of runoff and streamflow within the Missouri River Headwaters are likely more variable than the twentieth century instrumental records would seem to indicate.
  • The Role of EspH and Host Cell Proteins in Enteropathogenic Escherichia Coli-Induced Cell Death and Virulence

    Monasky, Ross Calvin (The University of Arizona., 2018)
    Enteropathogenic Escherichia coli (EPEC) is a leading cause of infantile diarrhea, particularly in developing countries. EPEC belongs to the attaching and effacing (A/E) family of pathogens and harbors a type III secretion system (T3SS) that delivers virulence proteins directly into host epithelial cells. These proteins alter host structure and function, likely facilitating pathogenesis. We recently demonstrated that EspH, an EPEC secreted protein, is a critical virulence factor and that mutant strains lacking espH are impaired for pathogenesis. EspH induces host cell death through activation of caspases and mitochondrial fission. We hypothesizes that a wide range of host proteins are implicated in this cell death phenotype. Quantitation of host cell death during EPEC infection using siRNA-mediated knockdown of individual host cell proteins supports this hypothesis. A broad group of host protein knockdowns displayed altered host cell death during infection. The goal of my studies is to identify the host pathway(s) altered during EspH-induced epithelial cell death and, eventually, to establish the significance of this pathway in EPEC virulence.
  • Biorecovery of Platinum Nanoparticles by Anaerobic Sludge

    Simon Pascual, Alvaro (The University of Arizona., 2018)
    The future supply of platinum (Pt) and the platinum group metals (PGM) is at risk because of their scarcity and their high demand. Therefore, recovery of Pt and PGM is an alternative worth of study to help solving possible future supply problems. This research explored a new alternative for the microbial recovery of Pt. The ability of an anaerobic granular sludge to reduce Pt(IV) and Pt(II) ions to elemental Pt(0) nanoparticles under different physiological conditions was studied. Results demonstrated the ability of a methanogenic consortium (anaerobic granular sludge) to reduce Pt(IV) and Pt(II) ions to elemental Pt(0) nanoparticles under different physiological conditions. X-Ray diffraction (XRD) and transmission electron microscope (TEM) analyses confirmed the formation of nanoparticles that were deposited on the cell surface as well as in the periplasmic space. Ethanol supported the biologically catalyzed Pt(IV) reduction in both cases, Pt(IV) and Pt(II), meanwhile hydrogen (H2) and formate promoted the chemical reduction of Pt(IV) and Pt(II) with some additional biological stimulation in the case of H2. A hypothesis is proposed in which H2 formed from the acetogenesis of ethanol is implicated in subsequent abiotic reduction of Pt(IV) indicating an integrated bio-chemical process. Endogenous controls lacking exogenous electron donor also resulted in slow Pt(IV) removal from aqueous solution. However, the rate of Pt(II) reduction was much faster compared to that of Pt(IV) indicating that Pt(II) should not be expected to accumulate as an intermediate in the reduction of Pt(IV). Finally, both Pt(IV) and Pt(II) were found to cause severe inhibitory effects in the methanogenic activity of anaerobic granular sludge, both having a similar IC50 (concentration causing a 50% of inhibition) at about 3 mg L-1. This Master’s thesis presents a new green and environmental-friendly method for the recovery of Pt from wastewater that could contribute to fight future problems in Pt and PGM supply.

View more