Digital Commons Network^™

An Evaluation Of The Nebraska Ffa Launch! Program, Miranda M. Hornung

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

The purpose of this program evaluation was to discover the experiences of entrepreneurial education received in the Nebraska FFA Launch! Program in relation to future decisions for high school students about entrepreneurship. The Launch! Program aims to provide an educational experience for youth to develop an entrepreneurial mindset and view entrepreneurship as a possible career pathway. This focus addresses the opportunity to potentially help solve the issue of brain drain in rural Nebraska communities. A program evaluation was conducted by story harvesting from past participants through Zoom interviews to understand personal experiences and takeaways from their time in the Launch! …

Inclusive Special Education: Changing Mindsets And Practices To Improve Student Achievement, Nicole S. Pechous

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

Decades after federal mandates for special education services, students with disabilities (SWD) continue to lag significantly behind their peers in academic achievement and post–school outcomes. This quantitative study explores how the inclusive mindsets and collaborative practices of general and special education teachers from a medium–sized, suburban Midwestern district improved after participating in a year-long training series on inclusive practices. The study also explores the impact of increased inclusive mindsets and practices on student reading achievement, particularly for students with disabilities. Using a quantitative design, changes in inclusive mindsets and practices for participating teachers were analyzed. Findings indicated that participation in …

David Berkowitz, Enzyme-Assisted Organic Synthesis & Nsf Officer, Mark A. Griep, David B. Berkowitz

Department of Chemistry: Faculty Interviews

Dr. Dave Berkowitz was born in Urbana, Illinois. He earned his bachelor's degree in chemistry from the University of Chicago, where he did undergraduate research. Next, he earned his doctorate from Harvard University. However, his advisor, Steve Benner, moved from Harvard to ETH Zurich, also called the Swiss Federal Institute of Technology. Dave accompanied him to Zurich, where he completed his dissertation work. When Dave returned to the U.S., he did a postdoc with the legendary Samuel Danishefsky at Yale University. In 1991, he joined UNL as an assistant professor of chemistry and quickly rose through the ranks. Dave is …

Transport Phenomena Of Multiphase Flow And Slippery Microsphere Suspensions In Confined Space, Ryan Haggerty

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

Understanding multiphase flow has many important environmental and engineering applications. For example, understanding gas flow in porous media is useful for energy storage, petroleum engineering, and contaminant cleanup. Nano- and microparticle transport is vital for enhanced oil recovery techniques and environmental contamination. Despite their relevance to environmental engineering, multiphase flows, especially with concentrated particle suspensions, are still a complex and developing topic. Additionally, hydrophobic surfaces are a relatively new area of research, for while the effects of hydrophobicity are observable, the mechanisms may occur on several scales. Hydrophobicity leads to a property called “slip,” which contradicts the traditional treatment of …

Interview With Orca Award Winner Paul Olson, Unl English; Literature, Curricular Reform, Great Plains Studies, Mark A. Griep, Paul A. Olson

UNL ORCA Interview Series

Paul Olson was awarded the ORCA in 1984. He was born in 1932 in Washburn, Wisconsin. During his youth, his family also farmed in Nebraska and South Dakota. He earned a bachelor’s degree from Bethany College in Lindsborg, Kansas. Next, he earned a master’s in English from the University of Nebraska, had a Fulbright fellowship to spend a year at London University in England, and earned his doctorate in medieval and Renaissance studies from Princeton University in New Jersey. In 1957, he joined UNL as an assistant professor of English and was soon promoted to full professor. One of his …

Beyond Green: Re-Reading "Wicked" As Anthropological Text, Tan Gia Bao Huynh

Dialogue: The Interdisciplinary Journal of Popular Culture and Pedagogy

This paper examines "Wicked" through the lens of cultural borderlands, revealing how the musical dramatizes the creation and navigation of social boundaries. By analyzing Elphaba's journey, the research demonstrates how her green skin serves as a powerful metaphor for cultural otherness, while her experiences at Shiz University and beyond illustrate strategies of resistance, accommodation, and identity formation familiar to those navigating between dominant and marginalized spaces. Particularly significant is the paper's examination of Oz's propaganda system, which demonstrates how cultures manufacture monsters and heroes through selective storytelling and public ritual. This analysis offers fresh insights into "Wicked's" enduring appeal, suggesting …

Identifying And Prioritizing Habitat For Ring-Necked Pheasants (Phasianus Colchicus) Conservation In Nebraska, Allison Joy Barg

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

As competing demands grow on agricultural landscapes, optimizing land use for economic and environmental benefit is crucial. A key way to improve conservation outcomes on working lands is to strategically target conservation efforts to land that is likely to provide the maximum benefit; however, this approach requires sufficient data to predict the outcomes of varying management decisions. Ring-necked pheasants are a recreationally and economically valuable species that were historically abundant in the agricultural regions of North America. The intensification and simplification of farm systems over the last half century have caused pheasant populations to decline, and while conservation programs such …

Physical Space And Democratic Citizenship: Third Place Usage And Civic Engagement Among Undergraduates, Justin L. Fintel

Honors Program: Senior Projects (Public)

This thesis examines the relationship between third place usage and civic engagement levels among undergraduate students at the University of Nebraska-Lincoln. Drawing on urban planning and political science literature, I hypothesize that students who more frequently use and interact with campus third places—which are informal communal spaces that foster community, such as coffee shops, libraries, and student unions—demonstrate higher levels of civic engagement. Using survey data from thirty-eight undergraduates and ordinary least squares regression analysis, I find strong support for my hypothesis. Third place usage significantly predicts civic engagement (β = 0.609, p < 0.001) statistically, and this relationship remains robust even after controlling for family socialization and socioeconomic status. The findings suggest that physical spaces on college campuses play an independent role in promoting democratic citizenship beyond students' pre-existing characteristics. These results have important implications for university and urban planning, while highlighting the value of investing in communal campus spaces as mechanisms for promoting civic participation.

The Effect Of Cerebral Somatosensory Network Priming On Language Function In Chronic L-Mca Ischemic Stroke: A Companion Case Study, Mandelin E. Wollesen

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Chronic aphasia following a left middle cerebral artery (L-MCA) stroke is often associated with limited recovery beyond the acute phase, necessitating interventions that target neuroplastic mechanisms. This study examined the effects of somatosensory pneumotactile stimulation paired with cognitive-linguistic tasks on functional language performance in an individual with chronic aphasia. Using a single-subject pre-post design, the participant completed a 10-week intervention protocol involving repeated pneumotactile stimulation via the GALILEO system combined with language and motor tasks. Outcomes were assessed using standardized measures, discourse-based language samples, oral reading, repetition, and phonemic verbal fluency. Discourse was analyzed using Correct Information Units (CIUs), words …

Addressing Legal Uncertainties In Article Versions And Institutional Copyright Policies To Support Immediate Public Access To Federal Grant-Funded Publications, Yuanxiao Xu

Copyright, Fair Use, Scholarly Communication, etc.

New federal public access policies—mandated by the 2022 OSTP Memo and already adopted by several key federal grant-making agencies—require authors funded by federal grants to deposit peer-reviewed publications for immediate public access. This paper explains how grant- receiving institutions and their affiliated authors can dispel legal uncertainties and comply with the new public access policies. Section I delineates how valid prior licenses enable public deposit of manuscripts notwithstanding later publishing agreements transferring copyright to the journals. Section II discusses the different versions of a manuscript created during the publication process. Section III describes the different types of third-party contributions incorporated …

Unl Emeriti And Retirees Association Newsletter, Spring 2019

UNL Emeriti and Retirees Association: Newsletters and Other Materials

University of Nebraska-Lincoln Emeriti and Retirees Association Newsletter, Spring 2019

Water Current, Volume 58, No. 1, Spring 2026

Water Current Newsletter

No abstract provided.

Guidance For Left-Turn Flashing Yellow Arrow (Fya) Implementation In Nebraska, Aemal Khattak, Li Zhao, Frank Selase Dzawu

Nebraska Department of Transportation: Research Reports

This research evaluates the safety performance of flashing yellow arrows (FYA) and driver behavioral responses in Nebraska, using data from 324 FYA intersections (Lincoln 160; Omaha 164) to develop evidence-based implementation guidance. The study addresses critical knowledge gaps in local driver acceptance patterns, the effectiveness of phasing configurations, and a comprehensive safety assessment that integrates crash and conflict analyses. The methodology employed four complementary analyses: (1) negative binomial crash frequency modeling of 3945 unique left turn crashes (2015-2024) across Lincoln and Omaha; (2) binary logistic regression of 948 gap acceptance decisions across 43 intersections; (3) linear regression of post-encroachment time …

Update Of Intersection/Interchange Guidelines For Rural Expressways In Nebraska, Aemal Khattak, Mm Shakiul Haque

Nebraska Department of Transportation: Research Reports

Nebraska Department of Transportation (NDOT) staff frequently decide on changes to existing two-way stop- controlled (TWSC) intersections on rural expressway to alternative facilities, such as a restricted crossing U-turn (RCUT), a roundabout, a signalized intersection, or an interchange. As Nebraska makes progress toward completion of its expressway system, updated and defensible decision-making is essential for conversion of TWSC highway intersections. NDOT’s existing guidelines, developed in the 1990s, no longer reflect current operations, safety performance, or modern intersection designs.

This project updated and expanded NDOT’s guidance using contemporary traffic operational and safety data, combined with robust microsimulation and safety performance modeling. …

Ultra-High-Performance Concrete (Uhpc) For Bridge Deck Overlay And Structural Deck Repair, Jiong Hu, George Morcous, Akbota Aitbayeva, Ming Gerges

Nebraska Department of Transportation: Research Reports

Ultra-high-performance concrete (UHPC) is an advanced cementitious material known for its exceptional strength and durability, making it an ideal material for bridge deck overlays and repairs that address the common issue of premature deck deterioration. Conventional UHPC is typically flowable and self-leveling, which makes it unsuitable for deck surfaces with cross-slopes and/or sloped vertical profiles. Therefore, a highly thixotropic UHPC that responds well to vibration while remaining stable on sloped surfaces is needed for overlay applications. Mixtures with varying binder content, water-to-binder ratio, fiber content, and dosages of admixtures were developed and evaluated. Two of the most effective and economical …

Detection And Quantification Of Allergen Cross-Contact In Shared Frying Oil Using Targeted Mass Spectrometry, Francisca Asigri

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Cow’s milk and egg allergies are prevalent IgE-mediated food allergies that pose significant public health concerns worldwide. Although strict avoidance remains the primary management strategy, unintended exposure can still occur through allergen cross-contact, particularly in commercial and industrial food operations that utilize shared frying oils. The objective of this study was to identify and quantify allergen transfer in shared frying oil and assess the robustness of existing targeted mass spectrometry methods (LC-MS/MS) for detecting milk and egg proteins in heated oil matrices.

Heated oil spikes were developed by incorporating non-fat dry milk (NFDM) and whole egg powder (WEP) into oil …

Effects Of Ndbi With Just-In-Time Programming Of Vsds On Communication Of Children With Asd, Jenna M. Rogers

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Autism Spectrum Disorder (ASD) is a prominent neurological and developmental disability that often requires communication support, such as Augmentative and Alternative Communication (AAC). Visual Scene Displays (VSDs) are an AAC support that directly immerses in the user’s life, using images from real environments the user has or may experience. Naturalistic Developmental Behavioral Intervention (NDBI) is an evidence-based approach to early intervention that targets social communication during naturalistic routines, including those who rely on AAC support to communicate. Despite recent research indicating that combining NDBI and AAC is a promising approach (Pope et al., 2024), no studies to date have examined …

A Software-Defined Radio Testbed For Mimo-Ofdm Communications, Chaz G. Maschman

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

In this thesis, we implement a testbed for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems via GNU Radio. Specifically, we implement a configurable framework for the construction of MIMO-OFDM software-defined radio (SDR) systems as a GNU Radio module. The GNU Radio MIMO-OFDM module consists of multiple algorithmic blocks necessary for implementation of a MIMO-OFDM system. This includes a library for the generation of orthogonal or pseudo-random pilot sequences, amendments to the Schmidl-Cox protocol for MIMO synchronization, and the creation of click-and-drag GNU Radio blocks implementing the conversion of arbitrary data sent via external programs to MIMO-OFDM frames, the initial …

Exploratory Evaluation Of Handler Performance And Processing-Related Outcomes During Cattle Handling, Morgan Marquardt

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

Animals have several critical roles in society, including the production of food and fiber, and companionship. Contact with animals has been shown to benefit human physical and mental health, yet little research has investigated the impact that humans have on animals. Handler skill may considerably affect the extent to which humans influence animal health and wellbeing, and this may be a critical consideration for animal agriculture. Objective assessment of cattle handler skill has received limited attention in the scientific literature, despite its importance to human safety and animal welfare. When compared to less skilled handlers, highly skilled cattle handlers may …

Developing 'A Guide To Agricultural Education Advisory Committees: Development, Uses, And Transitions', Christine Schuler

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

This project developed a practical guide to support agricultural education advisory committees in their development, use, and long-term sustainability. Strong school-community partnerships are essential to effective agricultural education programs, particularly in small, rural communities where programs serve as connections between the school and local industry. Advisory committees play a critical role in maintaining these relationships, yet many agricultural educators lack clear, accessible resources to guide this work. This project addressed that need by creating a comprehensive, practice-based guide established from research and professional experience.

This guide started from a review of literature on school-community partnerships, advisory committees, and agricultural education …

Divided We Stand: Exploring Public Perceptions Of Georgia’S Political System, Luka Lazishvili

Department of Sociology: Dissertations, Theses, and Student Research

Recent years have witnessed increasing concern about democratic backsliding across different regime types, raising important questions about how citizens perceive the legitimacy of political systems during periods of institutional decline. Since 2019, the Republic of Georgia has been experiencing a sustained period of political unrest, which has deepened political polarization and contributed to a decline in Georgia’s Democracy Index. This study examines how citizens perceived the legitimacy of their political system amid democratic backsliding between 2019-2024.

Drawing on legitimacy theory and social identity theory, this study analyzes three waves of cross-sectional data from the Caucasus Barometer survey (2019, 2021, and …

Rhetorical Violence: The Rhetorics Of Women's Counter Political Violence, Kylie Rowland

Department of English: Dissertations, Theses, and Student Research

Protest is omnipresent, and yet not much is known about the efficacy and impacts of its different rhetorical strategies—particularly so for marginalized populations, whose available means of protest are already limited by both material realities and assumptions that govern who and what can make waves. This bind is further exacerbated by gendered and racialized civility politics that determine which bodies can be disruptive and which already are considered “violent.” To address this gap, I turn toward the under-researched rhetorical potentials of marginalized people’s—specifically women and queer folks’—use of symbolic protest “violence,” which works to strategically make evident the larger ongoing …

Dirges Of Hope, Manasseh Azure Awuni

Department of English: Dissertations, Theses, and Student Research

Among the varied themes that African fiction explores, politics and governance remain the most dominant across generations. Writing under oppressive and exploitative colonial administrations, the first generation of African storytellers used fiction to highlight the injustice of colonial rule. With fidelity to the African proverb that says the tales of hunting will always glorify the hunter until the lion learns to tell its own stories, African writers also used fiction to push back against one-sided, toxic narratives about the continent. After independence, when rulers of the new republics continued the colonial legacies of oppression, inflicting untold hardships on their citizens, …

Perceived Barriers To Integrated Crop–Livestock Systems: Evidence From A Nebraska Producer Survey, Omid Tarashtwal

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

Integrated crop-livestock systems offer agronomic, economic, and environmental benefits, yet reintegration has been slow across the Northern Great Plains despite sustained interest. Existing research has documented barriers to transition conceptually, but quantitative evidence on which barriers producers perceive as most important and which producer and operation characteristics are associated with stronger barrier perceptions remains limited. This thesis addresses that gap using data from the 2023 Nebraska Agriculture Operator Survey.

The analysis focuses on 241 Nebraska producers, including 179 crop-only and 62 livestock-only operations. Seven models are estimated, combining ordered logit estimation for single-item barriers with linear regression for averaged barrier …

Antecedents And Consequences Of Consumer Behavior In Circular Fashion: Cognitive, Normative, And Behavioral Pathways Shaping Purchase And Participation Intentions, Mahmudul Hasan Sabuj

Department of Textiles, Merchandising and Fashion Design: Dissertations, Theses, and Student Research

The increasing environmental impact of the fashion industry has intensified the need for a systemic transition from linear to circular production and consumption models. Despite growing interest in circular fashion, there remains a limited understanding of the underlying behavioral dimensions that drive consumer engagement in sustainable practices. Grounded in the Theory of Planned Behavior (TPB) and Norm Activation Theory (NAT), this study examines consumer behavior through an integrated framework capturing cognitive, social, and normative influences.

Using data collected from a structured online survey (N = 575), the study employs Exploratory Factor Analysis (EFA), reliability analysis, and multiple regression techniques to …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #69 Spring 2026

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President's message, Dustin Loy

Undergraduate Scholarship Awards

2026 Chapter Officers and Committees

Faculty Awards

Membership info and dues form

Grad Student Scholarship

Award of Merit

NU Foundation Fund

New Initiates

Save the Date

In Memoriam:
Kara Daye Heideman (March 31, 1980-December 11, 2025)
L. Dale Van Vleck (June 11, 1933-December 23, 2025)
James (Jim) Eugene Specht (September 12, 1945-February 13, 2026)
Irvin Thomas Omtvedt (June 12, 1935-April 6, 2026)
Fayrene L. Hamouz (June 6, 1946-April 8, 2026)
Robert L. Raun (April 22, 1928-April 22, 2026)

Eating For Healthy Eyes: The Role Of Nutrition In Ocular Health, Brianna Stroh

Honors Program: Senior Projects (Public)

The central research question of this thesis asks: How does nutrition influence ocular health overall and the impact of nutrition on the development or progression of common eye diseases? Building upon existing research in optometry/ophthalmology, nutrition science, and public health, this project examines the physiological mechanisms linking diet to eye health and evaluates how specific nutrients and dietary patterns contribute to disease prevention and visual function. This thesis employs a comprehensive review of peer-reviewed literature to evaluate the relationship between nutrition and ocular disease. Key areas of focus include the role of oxidative stress in eye disease development, the protective …

From The Pit, Joshua C. Goering

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

Clay retains histories; the memory of each action it experiences is depicted on its surface and in its form.  I am a potter focused on making objects that capture these moments. Pinching, scraping, trimming, throwing, and carving expose tooth and excavate form, revealing the qualities of the material and showing the marks of handwork. As a potter, I am interested in participating in a history of vessel making and understanding making through an interpretation of the historic object. The work acts as an archive, accumulating information about process, materials, and a greater context of elder objects. Integrating these vocabularies creates …