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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 …

Assessment Of Precision Rangeland Management Tools In The Nebraska Sandhills, Hannah K. Allen

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

The objective of this thesis is to evaluate tools and management strategies that contribute to rangeland monitoring and livestock distribution in heterogeneous grassland systems of the Nebraska Sandhills. Chapter one reviews relevant literature related to precision livestock management, the Nebraska Sandhills, biomass estimation, and pyric herbivory. The second chapter evaluates the use of fractional green canopy cover (FGCC) derived from the Canopeo mobile application as a rapid method for estimating aboveground biomass in Sandhills rangelands. Biomass samples were collected across topographic positions in both early and late growing season, and relationships between FGCC and clipped biomass were assessed using generalized …

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 …

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 …

Factors Influencing Sex-Based Movement Patterns In The Banded Garden Spider, Argiope Trifasciata (Forskal, 1776), Brandon R. Marrone

School of Biological Sciences: Dissertations, Theses, and Student Research

Movement is a fundamental ecological process shaping how individuals acquire mates, secure resources, and navigate heterogeneous landscapes. In species with extreme sexual size dimorphism (eSSD), such as the orb‑weaving spider Argiope trifasciata, males and females are predicted to experience different movement pressures driven by their reproductive roles. This thesis examines how individual traits and environmental conditions jointly influence movement across both sexes. Across two field seasons, we used intensive mark–recapture methods to quantify natural movement patterns of males and females within mapped prairie plots. The first chapter tested long‑standing predictions gravity hypothesis, which posits that smaller males benefit from …

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 …

Monitoring Terrestrial Ecosystem Productivity Using Hyperspectral Satellite Data, Serge Tuyambaze

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

Accurate estimation of terrestrial Gross Primary Productivity (GPP) is critical for quantifying global carbon sequestration and understanding the terrestrial carbon cycle. While eddy covariance (EC) towers provide standard flux measurements, upscaling these measurements to continuous global coverage remains challenging due to the sparse distribution of flux towers and their small footprints. Remote sensing (RS), especially coupled with eddy covariance data, has been used to estimate GPP at the global scale. Different RS derived productivity models have been developed, including vegetation indices, light use efficiency (LUE) models, solar-induced fluorescence (SIF), dynamic global vegetation models (DGVM), and machine learning. One widely adapted …

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 …

Impact Of In Situ Observations From Three Torus Cases On Model Analyses And Forecasts Of Severe Convection, Robert M. Szot

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

The quality of forecasts of severe deep convection in high-resolution numerical weather prediction is dependent on the representativeness of the model initial conditions. This representativeness may be negatively impacted by limited observation availability and by the presence of mesoscale heterogeneities that were not detected by conventional observations assimilated into convection-allowing models. By assimilating storm-scale observations from the Targeted Observation by Radars and Uncrewed Aircraft Systems (UAS) of Supercells (TORUS) campaign into an ensemble styled after the Warn-on-Forecast System, this study aims to investigate if data from field work platforms can improve the quality of initial conditions in the ensemble, potentially …

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)

Arrival Is Not Access, Emmanuel Asamoah

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

This thesis presents a group of sculptures and installations that explore how material, labor, and communication shape unequal access in diasporic life. It questions the common belief that movement, visibility, or relocation automatically leads to stability, care, or belonging. In my experience, arrival does not guarantee access. Using clay, steel and found materials, I create tension between softness and control. Many of these materials are worn and discarded. I cut and rebuild them, leaving marks of strain and repair visible rather than hiding them.

Repetition appears through rows of cast faces and a collection of telephones. These forms suggest shared …

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 …

Effect Of Curing Duration On Bridge Deck Concrete Performance, Zhaniya Omarova

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

This study evaluates the influence of curing duration on the performance of bridge deck concrete and investigates the feasibility of reducing curing periods without compromising structural and durability properties. Two concrete mixtures, a standard Nebraska Department of Transportation (NDOT) bridge deck mix (47BD) and an optimized reduced-cement-content mix (O47BD-R100), were evaluated under multiple curing durations Fresh, early-age, mechanical, durability, and shrinkage properties were assessed to characterize the effect of curing on concrete behavior. Internal relative humidity and temperature were monitored using embedded sensors to investigate moisture diffusion and its role in shrinkage development for lab specimens and full-scale slabs.

Results …

Beauty Temples, Courtney Obrien

Honors Program: Senior Projects (Public)

This photo story explores the profound intersection of physical touch, professional craft, and emotional sanctuary within the independent beauty spaces of Lincoln, Nebraska. By documenting the work of practicing hairstylists, a tattoo artist, and a nail technician, the project positions the modern studio not merely as a place of aesthetic enhancement, but as a "Beauty Temple".

At the heart of this narrative is the intimacy of the artist-client relationship. In an increasingly digital world, these practitioners remain among the few professionals whose work requires sustained, purposeful physical contact. Through close-up photography and environmental portraiture, this project captures the steady hands …

Validating Hybrid Simulation Of Restaurant Noise With Real-World Data, Samuel Underwood

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

Restaurants exhibit noise levels that vary with occupancy over a typical operating day. When noise levels become excessive, customer comfort is diminished. While many previous works have surveyed noise levels in restaurants over short time intervals, there has been little work to comprehensively examine noise levels over a full operating day, while also tracking occupancy levels and thoroughly measuring unoccupied acoustical parameters. This dissertation work contributes to the existing body of restaurant acoustics work by measuring unoccupied and occupied acoustical conditions in 21 restaurants in the Midwest, correlating user reviews, scores, and crowdsourced noise levels measured in 943 venues in …

The Relationship Of Concussion And Alcohol Use: An Investigation Into Intervening Cognitive Mechanisms, Alexi Cranford

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

Traumatic brain injury (TBI) and alcohol use are common and pervasive issues in society today. Alcohol use is frequently linked with brain injury even in its mildest form, concussion, also known as mild traumatic brain injury (mTBI). The brain’s reward system has been shown to be involved in alcohol and substance use behaviors, and a neural basis has been demonstrated to underlie reactivity to alcohol cues. Learning theories such as classical and operant conditioning can also help conceptualize how these relationships develop. Reward sensitivity and executive functioning (particularly decision-making skills) are cognitive processes that may moderate the relationship between brain …

Evaluation Of Transportation Policy Effectiveness In The United States: Case Of Personal Electric Vehicles And Commercial Electronic Logging Devices, Hania Afzal

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

Together, electric vehicle (EV) adoption and the electronic logging device (ELD) mandate illustrate two dimensions of transportation technology policy: the first driven largely by environmental and market-based incentives and the second by safety regulation and compliance requirements. Examining these cases side by side for the United States allows for a more comprehensive analysis of how technology adoption unfolds under different policy regimes, offering insights into the broader relationship between policy design, industry response, and public outcomes. The commercial motor vehicle (CMV) sector presents a different but equally important policy challenge in transportation technology adoption. Unlike consumer passenger vehicles, CMVs are …

A Place To Perform: Designing Spaces For Student Artists Through Event Planning, Ava R. Jacobsen

Honors Program: Senior Projects (Public)

This thesis examines the creation of accessible performance spaces for student artists not enrolled in formal music programs. To address this gap, two First Friday events were hosted at The Gathering Grove in Lincoln, Nebraska, providing platforms for local student performers and engaging the community in live art experiences. The first event, an open mic night, highlighted the challenges of spontaneous performances, while the second, featuring designated performers, tested more structured event planning strategies.

Both events emphasized the importance of marketing, venue layout, audience engagement, and operational organization. Key lessons included the need for contingency planning, multi-channel promotion, and clearly …

Effect Of Novel Antimicrobial Compounds On Fungal And Bacterial Pathogens, Megan Wilderman

Honors Program: Senior Projects (Public)

Antimicrobial resistance is a growing concern in medicine¹ leading to a need for the development of novel compounds. Two compounds were tested in this study, 2-hydroxyethylhydrazine (HEH) and para-nitrophenyl-isocyanide (NPIC). HEH targets phosphatidylcholine (PC) production², and NPIC targets mitochondrial function³. Choline (Cho) is a compound that bypasses the inhibition of HEH through the Kennedy pathway.² Two-fold serial dilutions were conducted in 96-well plates to test the sensitivity of different bacteria to HEH and fungi to HEH and NPIC in different media types. A choline condition was also included in the HEH dilutions to test …