Digital Commons Network^™

Optimizing Flash Flood Prediction In Arid And Semi-Arid Regions: A Comparative Evaluation Of Infiltration Models And Parameter Estimation Guidance Across Spatial Scales, Sara Rassa

Civil Engineering ETDs

This study improves flash flood prediction by analyzing the vital role of infiltration models in hydrologic modeling, especially for areas with scarce data. It offers new parameter estimation guidance for three infiltration models—initial-constant (IC), linear-constant (LC), and Green-Ampt (GA)—based on plot-scale rainfall simulations. The research emphasizes the impact of soil texture, moisture, and crust on model parameters. A comparative analysis of four models (curve-number, IC, GA, and LC) using data from Arizona's Walnut Gulch Experimental Watershed under different calibration scenarios shows the GA model's superiority in certain conditions, though it faces issues of equifinality in unconstrained calibrations. Meanwhile, the simpler …

Agroecology And Soil Stewardship: Values And Techniques Of Smallholder Farmers In Bernalillo County, Stephanie Olivas

Geography ETDs

Agrarian movements around the world use agroecology to build sovereignty and steward dynamic ecosystems. Research has shown that agroecological farmers steward more resilient crops, more resilient soil biomes, and greater biodiversity than conventional agriculture. GIS and remote sensing offer many tools to detect the impacts of these farmers on the environment, but it is less clear how such technologies fit into agroecological goals. This study asks: what values, experiences and knowledge do smallholder producers in Bernalillo County embody in their soil stewardship practices? Also, what experience or knowledge do smallholder producers in Bernalillo County have about remote sensing, and would …

Women Doctoral Students In Computer Science: Nevertheless, They Persist, Shannon L. Mccoy-Hayes Edd

Teacher Education, Educational Leadership & Policy ETDs

Throughout millennia systemic restrictions have prevented women from full participation in science. Even now, with science ubiquitous to life as we know it, double standards impact women’s access and equal participation in STEM. Computer science (CS) is one STEM field where women remain significantly underrepresented in both academia and the workforce, yet despite decades worth of semi-annual reporting, there is still no consensus as to why. A survey was deployed to twenty-nine institutions inviting women doctoral students in CS to participate in personal interviews. Six women from different institutions at different stages of their programs responded. Qualitative interviews using phenomenological …

Entanglement With Neutral Atoms In The Simulation Of Nonequilibrium Dynamics Of One-Dimensional Spin Models, Anupam Mitra

Physics & Astronomy ETDs

Quantum entanglement is a key ingredient for quantum information processing with capabilities beyond that of classical computation. We study the generation and role of entanglement in the dynamics of spin-1/2 models, both for the design of quantum gates for general-purpose quantum computation and for quantum simulation of interacting spin models. We introduce the neutral atom Mølmer-Sørensen gate, involving rapid adiabatic Rydberg dressing interleaved in a spin-echo sequence. We show its robustness to quasi-static experimental imperfections and favorable scaling with the time-energy scales of Rydberg-mediated entanglement generation. In quantum simulation, we consider critical behavior in quench dynamics of transverse field Ising …

Multi-Physics-Based Modeling Of Cracks In Asphalt Concrete, Md Amanul Hasan

Civil Engineering ETDs

Cracking is the most prevalent distress in an asphalt concrete (AC) pavement, and it leads to structural deterioration and premature failure, thereby costing taxpayers a lot of dollars. Accurately assessing AC's cracking performance is necessary for pavement longevity, yet current methods often fall short. For instance, relying solely on binder creep tests to determine low-temperature grade inadequately predicts the AC pavement's low-temperature cracking problem. Understanding AC's loading rate- and temperature-dependent fracture behavior is crucial for gaining insight into the crack propagation in AC. In the first part of this study, a new physics-based analytical methodology is developed utilizing the bending …

Overregularization Of Irregular Spanish Verbal Morphology: The Cases Of 2sg Preterit And Irregular Past Participles, Elisabeth Baker Martínez

Spanish and Portuguese ETDs

This dissertation investigates a widely observed phenomenon in child language acquisition: overregularization, which occurs when a child applies a regular linguistic pattern where an irregular form is expected (Bybee, 2015), for example, when a child overregularizes irregular 1sg Spanish sé ‘I know’ as sabo. This dissertation adds to the research on the overregularization of Spanish verbal morphology. The population of focus is Spanish-speaking children ranging from the ages of 1;10 – 12;4 with different language backgrounds (e.g., monolingual Spanish children, U.S. child heritage speakers). The studies included address the development of two Spanish morphological forms by focusing on children’s …

Variability In Large Mammal Activity Patterns When Visiting Water In New Mexico, Juan E. Camacho

Biology ETDs

Studying activity patterns of animals can provide vital information about how different species react to environmental changes, yet camera trap studies typically neglect the temporal aspect of the data. Using a 10-year camera trap dataset on Sevilleta National Wildlife Refuge, NM, we explored daily activity patterns when visiting water of five large mammal species. The species of study were mule deer, pronghorn, elk, oryx, and coyote. All species showed significant variability in activity patterns from site to site across the refuge. Within a site, differences in activity across years and seasons were less pronounced. Mule deer and coyote showed very …

Nonmarket Valuation Of Environmental And Agricultural Services: Renewable Energy, Wildlife Watching, And Index Insurance, Thaneshwar Prasad Paneru

Economics ETDs

The first essay examines the effect of individuals’ endogenously acquired beliefs about anthropogenic global warming on their support for renewable energy growth in the United States. Using the data from multiple rounds of National Surveys on Energy and the Environment for the falls of years 2015, 2016, and 2017. The results of the interval regressions show that those who believe in the existence of global warming are likely to pay more for renewable energy growth than those who do not and that those who believe that the primary cause of global warming is human activities are likely to pay the …

Teacher Leadership And Principal Turnover In Elementary Schools: A Deductive Mixed Methods Multiple Case Study, Kenneth Salazar

Teacher Education, Educational Leadership & Policy ETDs

This study investigates the impact of principal turnover on teacher leadership, using mixed methods to analyze teacher leadership in low and high principal turnover elementary schools. Data collection includes teacher surveys and interviews with principals in four low turnover and four high turnover schools. Quantitative results indicate significant differences in teacher leadership, while qualitative findings reveal themes such as teacher professional development, support, leadership opportunities, anxiety, and sustainability. Mixed methods results suggest the need for increased time to develop trust between principals and teachers, greater teacher involvement in school leadership, more opportunities for teachers to share leadership, and a better …

A Hegelian Theory Of Divine Revelation, Jason D. Barton

Philosophy ETDs

Through an intensive examination of the second volume of G.W.F. Hegel’s oft-neglected Berlin Lectures on the Philosophy of Religion, I demarcate and elucidate a Hegelian theory of divine revelation. The second volume of these Lectures advances a series of configurations for religious consciousness through which absolute spirit passes in order to gain awareness of itself in the register of representation. While Hegel identifies divinity with absolute spirit in its moments and movements indicative of an odyssey, Hegel also ventures to painstaking lengths for the sake of authentically capturing how world-historical religions respectively portray(ed) the divine. Such a distinction between …

Comparative Analysis Of Sexual Harassment Policy And Implementation, Melanie Sayuri Dominguez

Political Science ETDs

Over the past three decades, as an increasing number of states have adopted sexual harassment legislation, many studies have examined the choices countries make to address and combat this issue. However, questions remain about what causes states to act while others resist change, why some countries choose to only introduce weak legislation rather than aggressively tackling the issue, and how people on the ground receive these policies. This dissertation uses a macro, meso, and micro approach to answer these questions on sexual harassment policy and implementation. First, using large-n data, I find that strong, feminist movements are correlated with the …

Robust Prediction Of Charpy Toughness Of Additively Manufactured Kovar Using Deep Convolutional Neural Networks, Nathan R. Bianco

Mathematics & Statistics ETDs

Understanding the reason for mechanical failures of manufactured parts in their operating environments is critical to prevention of future failures. However, in-situ post-mortem evaluation of physical properties, such as fracture toughness, is time consuming and alters the condition of the material, leading to potentially misleading findings. In this study, additively manufactured test coupons were produced over a wide range of process conditions to test the impact toughness of a material. The Charpy V-Notch toughness was measured on over 200 samples alongside corresponding optical images of both sides of the fracture surface. Convolutional neural network models were trained to correlate fracture …

Unboxing The Complicated Near Term Climatic And Geomorphic History Of Mars, Joshua Matthew Williams

Earth and Planetary Sciences ETDs

It has long been thought that glacial processes were unlikely within the tropical regions of Mars. However, growing evidence, including this work has identified and quantified relic glacial forms within the equatorial regions. These findings have major implications for understanding Martian climate history and its sensitivity to changes in insolation. As well, the presence of ice in the equatorial region of Mars has significant implications for the past global redistribution of the water ice in the Martian cryosphere. In this manuscript, I clarify and refine our understanding of the morphology of glacial features in the equatorial zone by applying novel …

Paleoecology Of The Late Cretaceous Western Interior Seaway And Gulf Coastal Plain, Ceara Kathleen Quinn Purcell

Earth and Planetary Sciences ETDs

This dissertation presents research into the paleobiogeography and paleoecology of the Western Interior Seaway (WIS) and Gulf Coastal Plain (GCP) during the Late Cretaceous. The dataset utilized here includes an extensive record of marine invertebrates from over 200 years of fossil collecting and sedimentary data collated from over 45 different literature sources, representing approximately 17 million years of deposition. The high-resolution of this dataset, and its extensive geographic distribution and temporal duration, make it ideal for exploring various ecological questions. Using these data, I have attempted to reconstruct paleobiogeographic provinces as published in prior works, explore functional diversity patterns, and …

Engineering Composite Gridlines For Improved Solar Module Reliability, Andre Chavez

Electrical and Computer Engineering ETDs

Renewable energy sources, such as solar power, are rapidly expanding worldwide to meet increased energy demands. However, these sources are exposed to challenging environmental stressors, such as extreme wind, heavy snow loads, and hailstorms that can cause irreversible damage to the crystalline semiconductor solar cells. Today, single crystalline silicon solar cells dominate the market, and our work is focused on improving their reliability against environmental stressors. One of the main degradation mechanisms caused by environmental stressors is cell cracks. These microcracks can go virtually undetected and lead to reduced power output from solar modules over time. To solve this engineering …

Exploring The Complex Landscape Of Proteins: From Intrinsically Disordered Proteins To Peptidomimetics Through Computational Approaches, Tongtong Li

Chemistry and Chemical Biology ETDs

Protein function is closely related to their three-dimensional structures. However, some proteins lack a well-defined structure, so-called intrinsically disordered proteins (IDPs). They prefer to interconvert among different conformations in isolation and undergo a disorder-to-order transition upon binding to a partner. IDPs or proteins with intrinsically disordered regions (IDRs), constituting a large portion of the human proteome, are involved in many cellular activities and are therefore highly relevant to our health. In my dissertation, I used computational methods to systematically study systems including dynamic proteins, disordered proteins in complex with their targets, and synthetic peptidomimetics to reveal the unique physical properties …

Evaluation Of Error Sources In Dynamic Multiple-Input Multiple-Output (Mimo) Tests, Odey Yousef

Civil Engineering ETDs

Dynamic testing of systems is used to characterize the relationship between inputs and outputs using frequency response functions (FRFs). Multiple input and multiple output (MIMO) techniques are crucial for realistic representation. In MIMO tests, environmental conditions are replicated by inverting the FRF matrix for input estimation. Steps include system identification, FRF inversion, input estimation, and input application. Each of these steps are nontrivial and require careful attention. Error sources manifest as error between desired and experimental outputs. Significant efforts to minimize this error exist, yet literature lacks a formal understanding of their origins. This research focuses on 3 of these …

Welfare As We Know It Now: Examination Of State-Level Effects Of Welfare Expenditure And Policy Restrictiveness On Crime And Group-Specific Arrests Over Twenty-Four Years Following Reform, Elizabeth Ann Sabbath

Sociology ETDs

The current project investigates how two different ways of operationalizing welfare—as an expenditure or as a policy of restrictive regulations—could shape the distribution of crime rates within a place and over time. In addressing the significance of its measures, the project also explores how welfare interacts with the broader economic forces of a place to influence crime rates over time. Finally, the project explores how welfare measures can predict arrest rates disaggregated by different gender and race groups. Panel fixed effects measure whether within-state changes in crime and group-specific arrests are explained by expenditure and restrictiveness observed repeatedly from the …

A Weather Radar Analysis Of The Effects Of The Albuquerque Urban Area On Thunderstorms From 2001 To 2020, Alexandra Jane Vivier

Geography ETDs

Urban areas have been found to affect the atmosphere locally through changes in emissions, thermal properties, the addition of moisture, and changes in airflow patterns. This study assessed the relationship between urban areas in central New Mexico and thunderstorm intensity and duration between 2001 and 2020. Weather radar data was used to derive thunderstorm events, as it is well-suited to fast-changing thunderstorm conditions. Regression analyses were used to determine the relationship between developed land cover and thunderstorm intensity and duration, while controlling for factors such as elevation, aspect, and near-surface temperatures. It was found that developed land cover was statistically …

A Multiple Case Study Of Asl Mentoring For The Field Of Interpreting, Andy Lim

Language, Literacy, and Sociocultural Studies ETDs

Drawn on the theoretical principles of sociocultural theory and constructivism, the aim of this multiple case study was to explore and understand the experiences of interpreting students, interpreter graduates, and pre-certified working interpreters after receiving ASL mentoring for at least 3 months to a year and to learn about the roles and impacts that ASL mentoring had on those groups of people as ASL mentees. Graduated from their respective 4-year universities for a bachelor’s degree related to the field of interpreting, participants included one interpreting student and one interpreter graduate, both of whom were from southern California, and one pre-certified …

History In The Present Tense: News And History On The Radio, 1924-1944, Steven R. Kostelecky

History ETDs

This dissertation addresses questions about the contested claim to an authoritative historical voice on American radio from its earliest days in the 1920s to its role in the Second World War in the 1940s. My major arguments involve, first, how the development of radio news in the 1930s took on the nature of “history in the moment” with live event programming—something its rival, the newspapers could not do. Secondly, with the press of world events, I argue, history and the news increasingly seemed to dovetail into the other on the radio, and the American Historical Association debated the most effective …

An Examination Of Behavior Of Youtube Commenters, John E. Leonard

Computer Science ETDs

YouTube comments are a unique form of social media, as viewers mainly interact with other viewers through comments sections, and cannot choose to interact with specific people. This lack of control over which comments are presented to them forces users to view spam.

Multiple general patterns of behavior were found in the dataset of YouTube comments. For example, most users posted just after a video’s publication. In addition, users tended to watch videos in the evening over the early morning.

A novel method was found for quantifying the likelihood of coordinated accounts being controlled by one person using time sharing. …

Online Temporal Data Mining And Learning: Pursuing Enhanced Efficiency And Robust Algorithms, Sheng Zhong

Computer Science ETDs

Time series data mining and learning serve as a cornerstone across various domains, including finance, healthcare, and science. Recent advancements in network and sensor technologies have ignited an increasing interest in real-time temporal data mining and learning techniques. Various tasks benefit from these techniques, such as environmental monitoring, event detection, anomaly identification, and forecasting. However, these techniques still face significant challenges in the online environment settings, encompassing aspects like efficiency, accuracy, robustness, and scarcity of labeled data. This dissertation presents four innovative solutions: FilCorr, DCT-MASS, FewSig, and BitLINK to overcome these challenges. We evaluate each method and showcase their practical …

Indigenous Land Acknowledgement, Learning Spaces, And Sacred Places As Factors For Native American First-Year Students In Higher Education, Danielle E. Yepa Gunderson

Teacher Education, Educational Leadership & Policy ETDs

Native American undergraduate students have the lowest college degree completion rates, between 0.7% and 1%, of those earning an undergraduate degree (National Center for Education Statistics, 2017). The purpose of this study was to contribute to the research literature to improve college success by answering this research question: What are the experiences of first-year Native American college students when Indigenous land acknowledgement, dedicated learning spaces, and sacred spaces are present on their campus? This research was a baseline exploratory study that utilized a quantitative approach to survey first year, Native American students at nine public higher education institutions in the …

Going Beyond The Margins: Photographs By Ming Smith, Isis A. Serna

Art & Art History ETDs

Ming Smith is a photographer who has been creating images since the early 1970s and trained with the artist collective Kamoinge Workshop. Throughout most of her career, Smith has been marginalized by art historians, critics, and museum curators. Since the early 2000s, Smith has only been included in museum exhibitions highlighting African-American female artists from 1960 to the present. Before this surge of interest in her work, the art world ignored and silenced her. However, Smith’s creative process allowed her to see and experience going beyond the struggle by being consistent in her strategy to do what she wanted on …

Indigenous Leadership: Leading The Journey So Others Follow, Ophelia M. Sanchez

Teacher Education, Educational Leadership & Policy ETDs

Leadership is a ceremony. All leaders need to envision a sense of purpose as the journey begins. I examined interactions among attitudes, perceptions, and decisions through Indigenous female leaders’ personally identified leadership styles and how to integrate Indigeneity for positive change in their environment. The purpose of this study was to help guide school leaders through initiating educational change and to give courage to Indigenous female leaders to continue to lead or step into leadership. In exploring these interactions, I examined Indigenous women’s leadership experiences, values, and beliefs. This study provided valuable insight to women of all ages, educators, school …

Securing The Skies: Safety-Constrained Decentralized Multi-Uav Coordination With Deep Reinforcement Learning, Jean-Elie Pierre

Electrical and Computer Engineering ETDs

In the dynamic landscape of autonomous aerial systems, the integration of uncrewed aerial vehicles (UAVs) has sparked a paradigm shift, offering unprecedented opportunities and challenges in collaborative decision-making and navigation. This thesis explores the application of multi-agent reinforcement learning (MARL) for the planning and coordination of UAVs in complex environments.

The first part of this thesis provides an introduction to single-agent reinforcement learning and MARL. We provide examples of the use of MARL for countering uncrewed aerial systems (C-UAS). We formulate the Counter-UAS problem as a multiagent partially observable Markov decision process (MAPOMDP), and we propose Multi-AGent partial observable deep …

Participatory Action Research To Develop And Implement Multicomponent, Multilevel Strategies For Implementing Colorectal Cancer Screening Interventions In American Indian Communities In New Mexico, Prajakta Adsul, Kevin English, Cheyenne Jim, V Shane Pankratz, Nicholas Edwardson, Judith Sheche, Joseph Rodman, Jimmie Charlie, John Pagett, Jonathan Trujillo, Jillian Grisel-Cambridge, Steven Mora, Kaitlyn L. Yepa, Shiraz I. Mishra

Pediatrics Research and Scholarship

BACKGROUND: Despite the effectiveness of colorectal cancer (CRC) screening, American Indians (AIs) have low screening rates in the US. Many AIs receive care at Indian Health Services, Tribal, and Urban Indian (I/T/U) healthcare facilities, where published evidence regarding the implementation of CRC screening interventions is lacking. To address this gap, the University of New Mexico Comprehensive Cancer Center and the Albuquerque Area Southwest Tribal Epidemiology Center collaborated with two tribally-operated healthcare facilities in New Mexico with the goal of improving CRC screening rates among New Mexico's AI communities.

METHODS: Guided by the principles of Community Based Participatory Research, we engaged …

New Insights Into T Lymphocyte-Mediated Immunity To Toxoplasma Gondii, Claire Marie Doherty

Biology ETDs

With nearly a third of the global population infected with the protozoan, Toxoplasma gondii, this parasite sits at a unique, immune-mediated interface of health and disease. In healthy individuals, Toxoplasma results in a chronic yet asymptomatic infection of the central nervous system. This quiescent infection is the result of parasite exploitation of host immune barriers, yet Toxoplasma can quickly become an opportunistic pathogen when immunity is disrupted by illness or immunosuppressive therapies. During the HIV-AIDS pandemic, it was observed that once latent Toxoplasma infections became the cause of severe, even fatal, disease in the absence of an intact T …

Health Infographics: An Examination Of Breastfeeding Infographics From The World Health Organization, Naadiyahtu Iddrisu

Communication ETDs

This thesis employed a qualitative thematic analysis and the representational, interpersonal, and compositional functions of visual analysis approaches to examine the World Health Organization breastfeeding infographics published between 2019–2023 through the lens of two health promotion models: the Enabling Environment for Breastfeeding Model, and the Social and Ecological Model. A total of 59 infographics were analyzed. The findings revealed that breastfeeding infographics have called for creating an enabling environment that supports breastfeeding by emphasizing breastfeeding as a shared or collective responsibility. Again, mothers were the main target audience of breastfeeding infographics. Also, the use of multiple racial colors - White, …