Digital Commons Network^™

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 …

Psychological Principles In Writing Center Consulting & Ai, Ella S. Hansen

Honors Program: Senior Projects (Public)

A third of those ages 18 to 24 have engaged with ChatGPT (OpenAI, 2025). The newest form, ChatGPT-4, is better at generating more plausible long-form essays and creative writing than ever before (Imran & Almusharraf, 2023), meaning that AI-assisted writing is prevalent at higher education institutions (Cardon et al., 2023) and in writing centers (Goulet, 2025). Limited research has investigated the impact of this on writing center consultants. This multidisciplinary study investigated how consultants feel about large language model artificial intelligence (LLM AI) and how it can impact the consulting process, through the lens of three psychological principles: empathy, social …

Rewriting The Boer ‘Slim’: Alice Stopford Green’S Reports On St. Helena’S Prisoner Of War Camp And Her Impact On British Views Of Boer Prisoners, Natasja A. Swanson

Honors Program: Senior Projects (Public)

Alice Stopford Green (1847 – 1929) was a prominent Irish historian and politician, known for her role as a political activist in the Irish Home Rule movement. Her lesser-known legacy is her investigative journalism on prisoner conditions in British prisoner of war camps during the Second Boer War (1899 – 1902). Her reports on Boer conditions in the Deadwood Prisoner of War Camp on the island of St. Helena reflected maltreatment and institutional abuse by the British Government. These discoveries supported the minority English opposition that thought that England was overstepping the rules of civilized warfare. Green was primarily concerned …

The Mysteries Of Postpartum Ocd: A Systematic Review, Taryn Shaffer

Honors Program: Senior Projects (Public)

Background: The research on postpartum mental health is growing, with most focusing on physical and sexual wellness, or well-known mental health symptoms such as psychosis, depression, and stress. However, as the research grows, so does the interest in lesser-known or under-considered postpartum mental health symptoms, including Obsessive-Compulsive Disorder (OCD). The focus of this research can be the exacerbation of already-present OCD symptoms, or the onset of them during pregnancy and the postpartum period. The purpose of this systematic review was to analyze research on OCD in pregnant and postpartum women. Specifically, the review included an analysis of measures used to …

A Strategic Audit Of Brown-Forman, Joshua Rossman, Carter Mann, Maris Grabill, Joe Meath, Gavin Pokorny

Honors Program: Senior Projects (Public)

Brown-Forman is a global spirits company with products sold in more than 170 countries. Known for brands such as Jack Daniel’s, Woodford Reserve, and Herradura, Brown-Forman’s history spans back over 150 years. Much of its success comes from thoughtful brand stewardship and a long-term approach to growth. The company operates in the highly competitive distilleries industry, where strong brand identity and premium positioning are key to performance.

This strategic audit reviews Brown-Forman’s development, leadership, business model, and guiding mission, as well as its external environment and internal capabilities. It also considers performance, competitive dynamics, business-level and corporate-level strategies, governance, and …

The New York Times: A Strategic Audit, Kaylee Campbell, Cassidy June, Keira Cummins, Tanner Maas, Alyssa Fjelstad

Honors Program: Senior Projects (Public)

The New York Times is a legacy newspaper that has navigated a great many changes since its founding in 1851. The company rose to success with its traditional print journalism, but has now transformed into a largely digital, subscription-based business model that provides subscribers with access to news, games, recipes, podcasts, product recommendations, and more. This provides an excellent foundation for a strategic audit to understand how one of the giants of a dying industry has not only managed to stay alive, but to thrive.

A PESTEL and Porter’s Five Forces analysis reveals that The New York Times operates in …

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 …

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. …

Exploring The Biocultural Profile Of The Undocumented Populations Of The Sonoran Corridor: A Skeletal Assessment Of The Prevention Through Deterrence Strategy, Mary A. Vaughn

Department of Anthropology: Theses and Student Research

Over the last thirty years the mortality rate of the undocumented population at the US-Mexico border has risen, requiring methods distinguishing US-born individuals from immigrants to improve the likelihood of identification and repatriation through foreign consulates. Forensic anthropologists with the Pima County Office of the Medical Examiner (PCOME) have advocated for the use of the biocultural profile, combining the biological profile with factors including oral health, osteological stress, and personal effects. The biocultural profile serves two purposes, functioning both as a tool for identification and with which to document structural inequality within communities of origin.

This study examines changes in …

Breeding For Diverse Color And Protein Quality In Popcorn And Sweet Corn, Jonathan Niyorukundo

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Sweet corn and popcorn are important crops consumed globally as vegetable and snack, respectively. They are deemed healthy foods due to high fiber and carotenoid contents, especially in yellow varieties. Commercial varieties are optimized for high-yielding agronomics, and previous efforts were made to improve specific macro- and micronutrient contents. Both sweet corn and popcorn have poor protein quality due to the inadequate essential amino acids such as lysine and tryptophan. Moreover, commercial varieties are predominantly yellow, thereby offering no diversity of other maize colors, which are potentially healthier and more appealing to the consumer. In this project, we sought to …

Unleashing Stress: The Effects Of Training, Bond Strength, And Stress On Pet Dog Behaviors And Health, London Maria Wolff

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Humans and dogs have formed a unique ability to communicate with each other through evolutionary and developmental mechanisms. This increased communication serves to form dynamic interspecies bonds by facilitating learning and training over the lifetime of a dog. However, it is not known what factors permit the unique capacity of dogs to form bonds with, and learn from, their human companions. Odor is a notable candidate for interspecies communication about emotional states, with studies showing that both dogs and humans use odor information to detect human emotions (Calvi et al., 2020). Possibly, this may include detection of both acute and …

Development Of A Decision Aid For Single-Sided Deafness Intervention For Adults: An Exploratory Mixed Methods Study, Priya Karimuddanahalli Premkumar

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Individuals with single-sided deafness (SSD) encounter challenges such as difficulty localizing sounds, understanding speech in noisy environments, heightened auditory fatigue, and a diminished quality of life. The available treatment options for SSD are diverse, ranging from contralateral routing of signal (CROS) devices and bone conduction devices (BCD) to osseointegrated auditory implants (OAI), cochlear implants (CI), or even opting for no device at all. However, each of these treatment choices comes with its own set of advantages and disadvantages. Navigating the decision-making process for SSD treatment can be challenging due to each option's unique pros and cons. Furthermore, there remains a …

Problems With Small Drinking Water Systems In Developing And Developed Countries: How Do They Compare?, Kurt Kesteloot

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation compares the factors that drive the long-term functionality of small drinking water systems (serving fewer than 10,000 people) in developing and developed country contexts, with a focus on groundwater supplies. Using regression analysis in SAS and complementary fuzzy-set Qualitative Comparative Analysis (fsQCA) for developing countries, the study integrates two datasets: 23 Engineers Without Borders project surveys (90+ variables across 14 countries) and a multi-year National Park Service inspection dataset (approximately 1,561 systems; 7,460 recorded deficiencies, enriched with U.S. Census ZIP-code aggregates). In developing countries, statistically significant predictors of success include government cash contributions (odds ratio [OR] ≈ 67.6), …

A Daily Assessment Of Food And Alcohol Disturbance And Alcohol Intoxication As Predictors Of Sexual Violence Victimization, Amanda Elizabeth Baildon

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Alcohol-involved sexual violence (SV) is a common and detrimental experience for young adult women. To supplement SV prevention strategies aimed at perpetrators, who are fully responsible for the occurrence of SV, risk reduction programs that target women’s drinking have been implemented with limited efficacy. To improve these programs, research must examine novel predictors like food and alcohol disturbance (FAD) that contribute to SV risk. FAD refers to compensatory behaviors (e.g., restricted eating, excessive exercise) to offset alcohol’s calories or enhance intoxication. Approximately 45% of young adult women engage in FAD, a practice that likely heightens SV risk by facilitating rapid …

Exploring The Relations Between Employer Beliefs And Workplace Practices: Organizational Factors And Autism Employment Outcomes, Melinda Ann Henson

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Autistic individuals experience persistent employment disparities despite interventions targeting individual skills and supports, suggesting that workplace factors also shape employment outcomes. Self-Determination Theory (SDT) posits that workplace environments supporting employee autonomy, competence, and relatedness promote employment outcomes. This study examined SDT-aligned practices and tested associations between employer beliefs about autism as a form of neurodiversity, hiring receptivity, and employment outcomes for Autistic professionals. A preliminary aim was to evaluate the psychometric properties of a newly developed measure, the Workplace Inclusivity and Autonomy Survey (WIAS), designed to assess SDT practices via employer report. Participants included 43 professionals representing a range of …

German Is For You! The Making Of A High School Multikulti German Course, Jennene Aten

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This teacher self-study examined the process of creating and teaching a multicultural German curriculum. This study necessarily involved observing students as they went through the semester of course work, but students are not the center of the research. I am. This research focuses on what I learned about teaching, specifically my teaching in my subject area and how I could improve my skills and methods.

Germany is an ethnically diverse nation but not usually thought of as such. The presentation of Germany in German language textbooks is generally portrayed as rather monochromatic. Students who study German, specifically in Fairfield, California, …

Improving Drought Science Communication And Accessibility, Lindsay Erin Johnson

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Effective drought management depends not only on the accuracy of scientific data, but also on how that information is communicated and understood by diverse audiences. This dissertation examines drought communication through the lens of science communication, with a focus on improving readability, accessibility, understandability, and usability of drought information. Using a manuscript-style format, three studies investigate how drought information is written, delivered, and applied. Chapter 1 provides a brief overview and outline of this dissertation. Chapter 2 evaluates the readability of the U.S. Drought Monitor (USDM) national narratives over almost 8 years. Results show that these narratives are consistently written …

Making The Case For Spandex: The Nature Of Re-Novicing And The Merging Of Expertise For Former Elementary And High School Teachers Who Move To Teaching At The Middle Level, Elizabeth K. Boyle

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

As an academic coach in a large, Midwestern middle school, I noticed an influx of teachers with years of prior experience at the elementary or high school levels being hired to work with students in grades six through eight. Because they were already veteran teachers, they were not assigned mentorship, yet there were aspects of working in a middle-school setting that effectively “re-noviced” them (Hanuscin et al., 2020).

Knowing that cookie-cutter approaches to professional development and learning often do not meet the needs of adult learners, I sought information that would guide what professional growth opportunities could be provided to …

No Ash Will Burn, Blake Kinnett

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

No Ash Will Burn follows twin narrators Avery and Krista Harmon. After a boy their aged, named Oliver O’Hara, moves in next door, Avie begins playing music with him at the docks in their town. When their mother unexpectedly passes away, Avery leaves their small town of Monticello, Kentucky for Lexington, Kentucky, taking Krista’s dulcimer along with her. The dulcimer was built by their late father, who intended to build two, but passed away before he could complete the second, dedicated to Avery. The completed dulcimer has Krista’s name carved into the side. In Lexington, Oliver develops an original song, …

A Multimodal Approach For Building Generalizable And Reliable Models Of Longitudinal Experiential Data, Ahatsham Hayat

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation studies how to build generalizable and reliable models for longitudinal experiential (LE) data. Such data arises in domains where human behavior, experience, and context evolve over time, including education, behavioral health, and related human-centered settings. These datasets are often heterogeneous, partially observed, temporally structured, and vulnerable to out-of-distribution (OOD) shift, making them difficult to model with conventional machine learning pipelines.

The dissertation develops a multimodal research program that progresses from traditional machine learning and deep learning methods to contextual large language modeling, vision-language modeling (VLM), and finally a frozen-backbone multimodal framework designed to improve robustness and generalization. Across …

Impacts Of Supplemental Fat In Finishing Diets On Digestibility, Performance, Carcass Outcomes, Meat Quality And Methane Production Of Feedlot Cattle, Anna Marie Kobza

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Rising costs and fluctuating availability of supplemental fats has led to increased interest in alternative fat sources or feed additives that might improve utilization of supplemental fat in feedlot diets. Two separate experiments were conducted to evaluate alternative strategies to overcome high fat prices. The first experiment was a metabolism study, conducted to evaluate digestion parameters of supplemental fat sources with or without LYSOFORTE Extend. The objectives of this experiment were to evaluate LYSOFORTE Extend in beef finishing diets containing a saturated fat source (tallow) and unsaturated fat source (corn oil). Duodenally and ruminally fistulated steers were fed diets containing …

Integrated Approaches For Valorization Of Chicken Feather Waste: From Extraction To Application Of Keratin-Based Bioproducts, Muhammad Ehtasham Akram

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation explores the optimization of chicken feathers keratin hydrolysate (CFKH) production using alkaline hydrolysis (AH) and sub-critical water hydrolysis (SCWH), focusing on acquiring high keratin yield in the hydrolysate. Then, CFKH along with other locally sourced materials, was used to develop bioplastics with regenerative agriculture properties (BioWRAP), with the ultimate objective of applying it as a soil mulch to suppress weeds in agricultural crops. This work also addresses challenges in process design and industrial scale-up of BioWRAP. Chapter 1 is a literature review that introduces terms like biobased, biodegradable, and bioplastics, materials and methods used to make bioplastics, and …

Redefining Professional Boundaries To Strengthen Relationships And Postsecondary Goal-Setting: An Improvement Science Approach To Coaching Opportunity Youth, Felipe De Jesus Longoria-Shinn

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Transitional and independent living coaches at Central Service Agency (CSA), a pseudonym for a Midwestern human services organization, support opportunity youth—young people facing systemic barriers—in improving their life trajectories. Although CSA has served an increasing number of youth in recent years, the number pursuing postsecondary education has remained stagnant or declined. This study engaged coaches, staff, and participating youth in an improvement science (IS) initiative designed to increase the number of postsecondary goals set by youth. Grounded in research demonstrating that postsecondary pathways can mitigate the effects of adverse life experiences and promote long-term mobility, this study examined how relational …

Program And Proceedings, The Nebraska Academy Of Sciences 1880–2026: 146th Anniversary Year, One Hundred-Thirty-Sixth Annual Meeting

Nebraska Academy of Sciences: Programs and Proceedings

Program and abstracts of the proceedings for the Nebraska Academy of Sciences 136th annual meeting, 2025

Sessions

Aeronautics and Space Science

Anthropology

Biological and Medical Sciences

Earth Sciences

Ecology, Sustainability, and Environmental Science

Physics and Engineering

General Poster Session

2026 Maiben Lecture: Shifting Extremes: Understanding Nebraska’s Changing Climate and Preparing for What Lies Ahead, Deborah Bathke

2026 Friends of Science Awards: Julie Shaffer and Irina Filina

2026 C. Bertrand and Marian Othmer Schultz Colleaguate Schoalrship Award: Piper Ryschon and Bryce Reeson

In Memoriam: Paul Royster

Carmen Manrique De Quintero: A Forgotten Legacy In Colombian Piano Music, Lina Maria Luisa Marín Diaz

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This doctoral document investigates the life and piano works of Carmen Manrique de Quintero (1871–1931), a pivotal yet overlooked figure in Colombian music history. Positioned as a stylistic bridge between the nineteenth-century estética del salón [salon aesthetics] and the professionalization of the Colombian composer, Manrique de Quintero’s output represents a sophisticated synthesis of European forms and Colombian national rhythms. Despite her membership in the influential Garay artistic lineage and her prolific body of work, her legacy has suffered from editorial blurring, fragmented documentation, and systematic intellectual appropriation. Using a multidisciplinary approach of genealogical reconstruction and artistic archaeology, this study restores …

Integration Of Bayesian Networks And Neural Networks For High-Dimensional Data Analysis, Cooper Schmer

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

High-dimensional biomedical datasets, such as omics data, present significant challenges for predictive modeling due to noise, redundancy, and computational complexity. This thesis proposes a hybrid framework that integrates Bayesian Networks (BNs) and Artificial Neural Networks (NNs) to improve classification performance of such data sets while reducing input dimensionality. Central to this work is a novel feature selection method based on d-separation, a structural property of Bayesian networks that encodes conditional independence relationships.

The proposed approach introduces a count-based d-separation metric to quantify the relevance of variables to a target outcome, along with a thresholding scheme to balance feature selection robustness …

Parents Under Pressure: Social Media’S Impact On Parents’ Mental Well-Being, Ali E. Shull

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

The rapid growth of social media has transformed how parents access information, evaluate their practices, and compare themselves to others. Although parenting content is widely consumed, limited research has examined its immediate psychological and physiological effects. The present mixed-methods study investigated how exposure to parenting-related social media content influences parental stress responses, affect, and parenting self-efficacy. Participants (N = 83) were randomly assigned to view either parenting-related videos (experimental condition) or non-parenting crafting videos (control condition). Physiological stress responses were assessed using heart rate variability (HRV) during baseline and video exposure. Participants also completed measures of negative affect and …

Patient Facing Physical Therapy Clinicians’ Experience Of Leader Development Across Their Professional Span: A Phenomenological Inquiry, Judith R. Gelber

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

While healthcare professions call for leadership among its practitioners as a key function of practice, hospital systems typically employ a top town leadership structure. In physical therapy, leadership is centered around managers and educators. This leaves a gap in understanding about leadership at the level of the patient facing clinician. This study explored the experience of leader development across the career span of experienced patient facing physical therapists in the United States. The study used a hermeneutic phenomenological approach undergirded with leader development, experiential learning, and distributed leadership theories. Participant recruitment focused on patient facing physical therapists with ten or …

Awareness, Protest, And Action: Women Science-Fiction Writers As Writer Activists, Carolyn Nolte

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Following the end of World War II, science-fiction literature, which was mostly dominated by white male writers, experienced an increase in stories written by women writers. Of these postwar stories written by women, the three women writers in this dissertation imagined how their present-day experiences informed the future by exploring their concerns about humanity’s collective trajectory. By analyzing how their stories dramatize possible future social, psychological, biological, and environmental harms, this dissertation argues that these women writers’ works distinguish them as writer-activists, a concept I borrow from Rob Nixon’s work Slow Violence and the Environmentalism of the Poor.

I …