Digital Commons Network^™

Redefining The Mother Wound: Marianism, The Church, And Communal Mothering In Las Madres: Latinas In The Heartland Who Led Their Family To Success, Maria R. Loya-Pérez

Department of English: Dissertations, Theses, and Student Research

This thesis reconsiders the restrictive role assigned to Mexican mothers that is perpetuated by the Church and Marianism, and how those restrictions are liberated by communal mothering. In examining how a Mexican mother is expected to act based on cultural expectations, I analyze the stories of three real mothers from the familial autobiography Las Madres: Latinas in the Heartland Who Led Their Family to Success. I analyze three mothers, the matriarch Candelaria, her daughter Rafaela, and her daughter Irene to better understand how the Church and Marianism has restricted them based on the experiences of Candelaria. These restrictions when placed …

Killing The Hot Vampire: Gender, Camp, And The Stakes Of Desire In Nineteenth-Century Vampire Fiction, Ella G. Kehr

Department of English: Dissertations, Theses, and Student Research

This thesis examines the representation and destruction of the Hot Vampire in nineteenth-century vampire fiction, focusing on Dracula (1897), Carmilla (1872), and The Blood of the Vampire (1897). It argues that these texts construct the female vampire as a figure of excessive sexuality, independence, and deviance which causes both societal (patriarchal) and narrative disruption. In the male-authored texts, the construction of the Hot Vampire is exaggerated beyond the neat bounds of gothic excess and monster theory. The destruction of these vampires also follows this unbound extravagance. The Hot Vampire’s death becomes the ritualized restoration of patriarchal order, which is often …

Cis-Variant Gene-Expression Association Analysis: A Targeted Approach To Identify Functional Cis-Regulatory Variation, Sofiya Arora

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Phenotypic diversity in plants is largely driven by changes in gene function arising from mutations in both the coding and regulatory regions. Regulatory variation is particularly pervasive because it can fine-tune gene expression without disrupting protein function and is therefore less likely to be strongly selected against in natural populations. As a result, it has played a central role in evolution and domestication. In our previous genome-wide eQTL mapping study in maize, nearly two-thirds of the expressed genes were found to harbor detectable cis-expression quantitative trait loci (cis-eQTLs) with strong local effects on gene expression. Though these cis-variants are widespread, …

Quantitative Genetics, Genomics, And Phenomics In Maize And Sorghum, Nikee Shrestha

Complex Biosystems Program: Dissertations and Student Research

Generating the best crop varieties and hybrids requires identifying genes associated with the phenotype of interest and screening thousands of varieties across multiple locations. Quantitative genetics, along with comparative genomics, phenomics, and machine learning approaches, can help us identify target genes associated with the phenotype of interest to develop the right genotypes. Satellite platforms offer logistical and technical advantages in scalability and accessibility and could facilitate plot-level predictions, especially with steadily improving spatial resolution, thereby empowering the large-scale screening of thousands of genotypes across diverse locations. In the first chapter, I evaluated over 20,000 plot-level images of over 80 hybrid …

The Goad, The Bad, & The Ugly: The Livestreamed Vice Signaling & Body Fascism Of Clavicular & Asmongold, Jacob T. Fry

Department of Communication Studies: Dissertations, Theses, and Student Research

This thesis explores the rhetorical, material, and symbolic implications of fascist livestreaming in the United States through two popular streamers: Clavicular and Asmongold. These two streamers represent a small slice of the rise of different reactionary rhetorics online and how the use of different masculine subcultures—in this case ‘Looksmaxxing’ or Gamer inspired rhetoric—are used as ideological texts for white male supremacy. Whether in front of the glow of their gaming monitor or the flashing lights of a nightclub, the livestreaming of the body, home, relationships, and lifestyles challenge rhetorical conceptions of style, the ‘public/private sphere,’ and political communication. As different …

Three Essays On Veterinary Drug Maximum Residue Limits, Akinbode Okunola

Department of Agricultural Economics: Dissertations, Theses, and Student Research

This dissertation consists of three essays: the first examines the prevalence of veterinary drug maximum residue limits (MRLs), the regulatory behavior of countries in setting these MRLs, and the degree of country-level compliance with international standards of Codex Alimentarius (Codex). The second evaluates the extent to which compliance with international standards across countries can help to manage potential transmission of resistant bacterial from animals to humans through consumption of contaminated meat, dairy and aquaculture products. The third focuses on how differences in regulatory standards across countries can impact international trade in the global beef, pork, and poultry markets.

The first …

Exploring Determinants Of Value For Money And Bundling Effects On Public–Private Partnership Projects: A Data-Driven Empirical Study, Gaurav Khadka

Department of Construction Engineering and Management: Dissertations, Theses, and Student Research

Public–private partnerships (P3s) are widely used to deliver public infrastructure, yet current understanding of what drives variation in Value for Money (VfM) and the effectiveness of project delivery strategies such as bundling remains largely conceptual and grounded in perception-based evidence. Consequently, governments lack empirically validated guidance on which project, financial, and macroeconomic conditions meaningfully influence VfM outcomes and whether bundling improves project performance within the P3 context. This study addresses these gaps through an integrated analysis of 180 Canadian P3 infrastructure projects (1992–2020), one of the most comprehensive datasets of realized VfM internationally, incorporating project characteristics, financial arrangements, and macroeconomic …

Population Structure And Connectivity Of Atlantic Nurse Sharks (Ginglymostoma Cirratum) In The Bahamas And Outlying Areas, Baylie A. Fadool

School of Natural Resources: Dissertations, Theses, and Student Research

Understanding animal ecosystem dynamics and behavior at the individual and population levels is essential for identifying life-history patterns and important areas for management and conservation. Marine fish species often face minimal geographic barriers to movement, but environmental (temperature, salinity, current) or intrinsic barriers (philopatry, site fidelity) can dictate gene flow. Atlantic nurse sharks (Ginglymostoma cirratum) are an International Union for Conservation of Nature (IUCN) listed ‘vulnerable’ species and present a unique opportunity to investigate patterns of population structure and connectivity in large-bodied sharks. They are benthic and display reproductive philopatry, with recent work suggesting they have the capacity …

Exploring Student Sensemaking During A Collaborative Biology Lab, Rebecca Kollipara

School of Natural Resources: Dissertations, Theses, and Student Research

Collaborative learning environments offer valuable opportunities for students to construct scientific understanding through dialogue, yet the conditions that support sustained conceptual reasoning in group settings remain incompletely understood. While prior research has identified discourse moves associated with productive collaboration, less attention has been paid to how those moves function together across turns and conceptual boundaries, or how individual student characteristics shape their emergence. This thesis examines collaborative sensemaking in an undergraduate General Biology II course, drawing on two complementary analyses of student discourse during a bryophyte life-cycle modeling activity.

Chapter 1 investigates how student groups participated in sensemaking and how …

Examining Extremes: A Comparison Between Machine Learning Based Southwestern Conus Seasonal Drought And High Fire Risk Event Synoptic Climatologies, Ethan M. Greenberg

School of Natural Resources: Dissertations, Theses, and Student Research

The Southwestern United States (SW CONUS), comprised of California, Arizona, Nevada, and Utah, is a vast region that tens of millions of people call home. Hosting ecosystems ranging from grasslands and shrublands to temperate forests and climate zones ranging from Mediterranean climates to arid deserts, the region is nearly unanimously prone to intense droughts and devastating wildfires. While fire weather conditions and drought are often studied separately or mentioned as background conditions for the other, there are relatively few studies that compare the typical meteorological conditions between the two. This study aims to more closely understand the meteorological relationship between …

Gaining Mussel: Evaluating Reintroduction Success Of Native Freshwater Mussels In Nebraska And Eastern Wyoming, Travis A. Moore

School of Natural Resources: Dissertations, Theses, and Student Research

Freshwater mussels are one of the most imperiled groups of organisms in North America, with over two-thirds of species considered threatened, endangered, or of special concern. These long-lived bivalves are essential to stream ecosystems, acting as filter feeders that improve water quality and as indicators of aquatic health. In Nebraska and Wyoming, native mussel populations have declined sharply due to habitat modification, pollution, and reduced connectivity. Two species of particular concern are the Plain Pocketbook Lampsilis cardium, listed as Tier I at-risk in Nebraska, and the Fatmucket Lampsilis siliquoidea, a Tier II at-risk species. In response, state agencies …

Honeybee Colony Response To Probiotic Supplementation And Grazing Practices, Katya M. Busenitz

Department of Entomology: Dissertations, Theses, and Student Research

Honeybee health is a complicated issue. Studies were conducted to scale honeybee (Apis mellifera) health from the microbiome to the landscape. Colony health parameters were measured in response to probiotic administration. Colony capped brood production, colony summer weight gain, and Varroa mite incidence were measured. I found that applications of over-the-counter probiotics did not improve the measured parameters of honeybee health compared to a control group. Results suggest that probiotic application was not beneficial but positive benefits may depend on application method, brand, or strain of probiotics used. I also examined how colony health metrics responded to different …

Charting The Course: The Influence Of Mentorship On Women's Careers In Outdoor Education, Jessica M. Callahan

Department of Teaching, Learning, and Teacher Education: Theses and Other Student Research

Mentorship is a significant contributor to women’s experiences working in outdoor education, yet it remains underresearched in a formal capacity. This study aims to answer the central research question of “What meanings do women give to mentorship experiences in relation to their career development, retention, and professional identity?” A qualitative, phenomenological approach was chosen to be most appropriate, and both synchronous interviews and an online survey were used to collect data. In total, data was collected from 24 participants, which was analyzed using thematic analysis. Identified themes were categorized by the topics of mentor qualities and impact on self, mentorship …

Spatiotemporal Variability Of Differential Reflectivity (Zdr) Columns Due To Environment In Tornadic And Nontornadic Supercells, Adrianne J. Engel

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Polarimetric signatures have been of interest to researchers and operational forecasters since the completion of the WSR-88D network upgrade in 2013. Differential reflectivity (Z_DR) columns, which are collocated with supercell updrafts, are the focus of this study. Microphysical distributions within these signatures can be used to infer updraft strength and elucidate the processes responsible for updraft intensity and evolution. Z_DR column depth, areal extent, and variability of these metrics through space and time are assessed in a dataset of 114 nontornadic and tornadic supercells. Means of column metrics in nontornadic, non-tornado-producing, and tornado-producing analysis times are evaluated …

Undergraduate Design Spine For Biological Systems Engineering And Agricultural Engineering, David Mabie, Derek M. Heeren, Deepak R. Keshwani, Heidi A. Diefes-Dux, Nicole M. Iverson, Rachel Padrnos, Greg Bashford, Taryn King, Jenna Hefley, Curtis L. Tomasevicz

Department of Agricultural and Biological Systems Engineering: Presentations and White Papers

Engineering education is undergoing a shift toward preparing graduates with demonstrated capabilities that integrate technical knowledge, durable skills, and the ability to adapt in a rapidly evolving professional landscape. This paper describes a comprehensive redesign of the undergraduate curriculum in Biological Systems Engineering (BSEN) and Agricultural Engineering (AGEN) at the University of Nebraska–Lincoln. The redesign is grounded in a “Design Spine” framework, which distributes and scaffolds design experiences across all four years of the program to support progressive development of problem solving, systems thinking, communication, and professional skills. The curriculum is organized around clearly defined capabilities and threads that connect …

Assessment Of Super Absorbent Polymer In Soybean Cultivation Under Variable Irrigation Conditions In Nebraska, Ankit Chandra, Abia Katimbo, Ronaldo Marchezan, Martha Nabaggala

Department of Agricultural and Biological Systems Engineering: Presentations and White Papers

Water limitation is a primary constraint to soybean productivity in both irrigated and rainfed systems. Soil-applied superabsorbent polymers (SAPs) have been proposed as a strategy to buffer crops against episodic drought stress; however, their physiological and agronomic performance under varying irrigation regimes remains insufficiently quantified. Here, we evaluate three biodegradable polymer formulations: broader granules (BB), original granules (OG), and powder (PWR) applied at low (17.7 lb/ac) and high (120 lb/ac) rates under full (100% ET), reduced (50% ET), and no irrigation conditions in western Nebraska. Polymer application had negligible effects under full irrigation, with yields comparable to untreated controls. Under …

Effects Of Applying Humic Acid In-Furrow At Potato Planting, Jonathan Tyler Price

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Many products are marketed towards potato farmers that purport to have a positive return on investment for yield and quality. Humic acids, which are comprised of long chained, organic molecules that can be naturally or industrially made, are currently being marketed in this way. The use of these materials is reported to improve nutrient uptake, increase soil health, encourage vigorous growth, and most importantly, increase yields.  From 2023-2025, the in-furrow application of humic acid containing commercial products was evaluated in Pennsylvania on the cultivars ‘Lehigh’ and ‘Waneta’. Black Label Zn, Duo Maxx, Fertiactyl RhiZn, Humi-flex FA, Hydra-Hume, and Monty's Liquid …

Passive Microwave Remote Sensing Of Flash Drought Impacts On Vegetation, Quinton R. Deppert

School of Natural Resources: Dissertations, Theses, and Student Research

In 2002, Dr. Mark Svoboda characterized a new form of drought known as flash drought. Flash drought was defined as a rapid decline in vegetation health caused by severe heat and drought. In recent years, attempts to quantify the impacts of flash drought via precipitation, soil moisture, evapotranspiration, and temperature indicators have proliferated. What has rarely been quantified is what the rapid decline in vegetation health amid flash drought looks like through remote sensing. This is because vegetation health indices like the Normalized Difference Vegetation Index (NDVI) are derived from the visible and infrared regions of the electromagnetic spectrum and …

Comparing Awssi And Traditional Winter Metrics For Predicting Overwinter Survival Of Juvenile Walleye (Sander Vitreus), Camille N. Shifrin

Honors Program: Senior Projects (Public)

Winter conditions are an important driver of recruitment variability in freshwater fishes, yet winter severity is often characterized using single climate metrics. These simplified approaches may not capture the cumulative stress experienced by fishes during winter. The Accumulated Winter Season Severity Index (AWSSI) integrates multiple components of winter climate and may therefore provide a more biologically relevant indicator of overwinter survival. In this study, we compared AWSSI with traditional winter severity metrics to explain interannual variation in overwinter survival of juvenile Walleye (Sander vitreus) in Harlan County Reservoir, Nebraska. Model comparisons using Akaike’s Information Criterion (AIC) indicated that …

Narrating Experience: How Undergraduate Social Work Students See Themselves In The Social Justice Curriculum, Emily C. Soener

Department of Educational Administration: Dissertations, Theses, and Student Research

Social justice is widely recognized as a foundational value of the social work profession, yet research indicates inconsistencies in how social justice is defined, taught, and experienced within social work education. This study examines how undergraduate social work students make meaning of social justice learning in relation to their own lived experiences. Using a critical narrative inquiry approach grounded in constructivist qualitative methodology, this study explores how students narrate their experiences of social justice education and how those narratives reveal tensions between professional ideals and classroom realities. Data were collected through semi-structured interviews with eleven undergraduate social work students enrolled …

Evaluating Management Strategies And Technology To Improve Grazing Efficiency, Thomas E. Aquino

Department of Animal Science: Dissertations, Theses, and Student Research

Increasing land costs and labor constraints continue to challenge beef producers. More intensive practices can increase harvest efficiency; however, many producers are deterred from implementing them due to increased labor and management considerations. Virtual fencing (VF) may provide a reduced labor alternative to traditional fencing for managing intensive grazing. This dissertation evaluated management strategies and VF technology to improve grazing efficiency of stocker cattle systems. In Experiment 1, VF was used to effectively manage groups of steers grazing in adjacent paddocks separated by only virtual boundaries. There was no difference in VF containment (99%) when steers were grazing co-fenced, with …

Evaluation Of Palm Oil As An Ingredient In Finishing Beef Cattle Diets On Performance, Carcass Characteristics, And Meat Quality, And The Composition Of Spayed Heifers To Intact Heifers Fed Melengestrol Acetate On Feedlot Performance And Carcass Characteristics, Tate S. Johnson

Department of Animal Science: Dissertations, Theses, and Student Research

Heifers represent a large proportion of cattle placed in feedlots, making pregnancy management an important consideration for maintaining performance and carcass value. Melengestrol acetate (MGA) is commonly included in feedlot diets to suppress estrus and prevent pregnancy in intact heifers during the finishing period. Alternatively, spaying has historically been utilized as a management practice to allow heifers to graze alongside breeding cattle without the risk of pregnancy. Despite its historical use, there is limited contemporary research comparing the growth performance and carcass characteristics of spayed heifers with intact heifers managed with MGA under modern feedlot conditions. Therefore, a commercial study …

Good Life Automobility: Cultural/Rhetorical Resistance And Persistence Of Us Car Hegemony, Trinity O. Thompson

Department of Communication Studies: Dissertations, Theses, and Student Research

This project takes the car as a historical signifier of a rhetorical racialization process that enables a hypermobile white, masculine, neoliberal identity that pervades conceptions of mobility in the West. I locate these overlapping social formations under a cultural logic of good life automobility (GLA) that positions cars, a quintessential form of private property, as a motivator for a contemporary “good life” citizenship identity that cultivates neoliberal subjectivities of free movement and market consumption in contempt of socialized and racialized public transit futures. The introduction chapter elaborates on the boundaries of GLA while also contextualizing the two analysis chapters through …

Part Of The Family, Brian Garbrecht

School of Art, Art History, and Design: Theses and Student Creative Work

Part of the Family examines television as both a domestic object and a cultural force. TV was not simply something my family watched, but something we lived with. Through CRT televisions, VHS recordings, family photographs, altered TV Guides, fictional broadcasts, and immersive living-room installations, the project explores how television shaped memory, kinship, attention, and belonging in the American home. Drawing from my family’s archive of Chicago-area broadcasts recorded between the 1990s and early 2000s, the work treats VHS as a hybrid form of home movie, preserving the flow of commercials, news, station IDs, sitcoms, movies, and accidental overlaps that structured …

Application Of Maritime Non-Line-Of-Sight Relay Attack On Wireless Digital Communication, Nathan Meyer

School of Computing: Dissertations, Theses, and Student Research

As wireless communication becomes increasingly prevalent, securing information over wireless channels is an ongoing challenge, especially in maritime environments where communication depends on radio links. While higher layer wireless attacks have been widely studied, lower level physical-layer relay attacks in maritime settings have received less attention. This thesis presents a simulation of a maritime relay attack in a beyond line-of-sight wireless environment for study. A three antenna communication model is developed where a legitimate transmitter sends a digital wireless signal, an attacking antenna intercepts, modifies, and retransmits the signal, and a final receiver observes both the direct and relay transmission. …

A Webcam Eye Tracking Infrastructure For Software Engineering Tasks, Zachary M. Kozak

School of Computing: Dissertations, Theses, and Student Research

Performing eye tracking utilizing commodity webcams has been explored for over a decade, but limited camera quality and sensitivity to head movements have hindered its adoption in research settings. Recent advances in consumer-grade webcams and machine learning methods present an opportunity to improve the accuracy of webcam eye tracking and extend the feasibility of studies beyond controlled laboratory environments.

Current popular webcam eye tracking methods restrict implementations to the browser and rely on continuous user interactions for calibration, limiting the kinds of studies that can be conducted. This thesis presents a feature-based gaze prediction system that incorporates eye geometry and …

Leveraging Code Embeddings To Identify And Address Blind Spots In Benchmark Creation, Charles Moloney

School of Computing: Dissertations, Theses, and Student Research

Formal software verification remains critical for early vulnerability detection, yet benchmarking these tools is costly and often reliant on centralized datasets such as SV-COMP. While such repositories enable standardized evaluation, they introduce risks of overfitting and bias, particularly due to first-party benchmark contributions. To address these limitations, we extend ARG-V, our tool for generating SV-COMP-compatible benchmarks from real-world Java code, with a novel approach of using code embedding techniques to selectively sample from mined code. By leveraging Nomic Embed Code and a cosine-based Minimum Hyperspherical Energy (MHE) objective, we systematically select and transform benchmarks from scraped GitHub code that …

Real-Time Adaptable Residential Kitchen: A Plug-In Standard, Rachel Fuelberth

Masters in Architecture Program: Theses

This thesis looks at how a real-time adaptable standard could be put in place within the modern kitchen to allow for equitable use of the space by numerous members of the household and their differing physical characteristics. The residential kitchen is a fundamentally exclusionary architectural construction designed around able-bodied, average-height adults. This excludes children, the elderly, anyone outside of the average height, and people with mobility differences. The kitchen has never been a place of equity. It has been designed to be used by an average-height female, and it does not account for the discomfort of those outside this norm. …

The Harvey Pittel Saxophone Quartet: Its History And Legacy In American Saxophone Quartet Performance, James M. Lawhn

Glenn Korff School of Music: Dissertations, Theses, Student Creative Work, and Performances

The saxophone quartet has emerged as a legitimate chamber ensemble in the United States through the sustained efforts of a small number of pioneering professional groups. Despite the central role these ensembles have played in shaping repertoire, performance standards, and public perception, their histories have often gone undocumented. Among the most influential of these groups is the Harvey Pittel Saxophone Quartet, an ensemble that maintained an unusually active national and international touring career for nearly four decades and helped establish the saxophone quartet as a viable professional model.

This document addresses a significant gap in the scholarly literature by presenting …

Design And Development Of A Passive Dust Protection System For Lunar Docking Operations, Simon Thengvall

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

Lunar docking systems face a unique set of environmental conditions that can create significant challenges for mechanical design. Among these, the abrasive nature of lunar regolith can impair the kinematic function of traditional terrestrial mechanisms as well as contaminate critical spacecraft components such as environmental seals, causing them to fail. For crew-rated docking systems, failure of these systems not only threatens mission success, but also crew safety, so dust protection is crucial for docking components. To address the concerns of regolith intrusion, the Simple External Attachment for Lunar Openings (SEALO) is developed as a key architecture for mechanism evaluation when …