Digital Commons Network^™

Nebraska And The Midwest Agtech Ecosystem: Benchmarking Innovation Investment And Translation Gaps, Ankit Chandra, Ishani Lal, Brennan Costello

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

Agricultural innovation is central to the sustainable transformation of food systems, yet the capital that finances it is unevenly distributed relative to where food is produced. This paper develops a diagnostic framework for measuring this mismatch and applies it across the U.S. Midwest from 2021 to 2025, with particular emphasis on Nebraska's structural position within this landscape. Drawing on venture capital deal-flow data, 17 stakeholder interviews, and a novel strength-weakness-opportunity-gap (SWOG) ecosystem mapping methodology, we document $736 million in tracked Midwest AgTech funding across eight states (Nebraska, Iowa, Missouri, Illinois, Indiana, Kansas, North Dakota, and South Dakota). We introduce three …

Communication And Prosocialization: Understanding The Development Of Inclusive Morality, Hannah Smith

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

Relationships between individuals from different social or cultural groups are often impacted by ingroup favoritism, outgroup bias, and structural inequity determined by a person's social and cultural identities. Recognizing this, scholars and practitioners for the last few decades have attempted to address this by creating interventions, workshops, and other applied programs that aim to reduce this intergroup bias and ameliorate the negative consequences. The current dissertation complements this body of applied scholarship by shifting the focus from reducing and minimizing bias to focusing on processes that lead to a more prosocial and inclusive worldview.

The overall aim is to understand …

Personalizable Metabolic Models To Enable Immune Characterization And Drug Discovery, Joshua Loecker

Department of Biochemistry: Dissertations, Theses, and Student Research

Cellular metabolism is reshaped by disease and physiological state, and genome-scale metabolic networks (GSMNs) offer a systematic way to interrogate this biology and identify therapeutic targets. Building a GSMN from expression data, however, requires a sequence of stages including read processing, normalization and gene-activity classification, multi-omic integration, model reconstruction, simulation, and biological interpretation. These are typically handled by disconnected tools spanning multiple programming languages, file formats, and databases. The resulting reliance on heterogeneous interfaces and manual steps threatens reproducibility. This work develops an ecosystem of computational tools that carry an analysis from raw sequencing reads to mechanistic biological interpretation. First, …

Pinochet’S Upswing: The Demise Of A Democratic Society In Chile, Jacob Behnk

Honors Program: Senior Projects (Public)

In the United States, we tend to view democracy as an inviolable tenet of political life. Our nation’s founding is even romanticized as a heroic fight for liberty against the wicked tyranny of the British monarchy. It is unthinkable that democracy could ever be destroyed, let alone have the citizens cheer on those who engineer its destruction—yet this is the very situation that Chile found itself regarding Augusto Pinochet, a brutal dictator who ruled the country with an iron fist from 1973 to 1990. Pinochet would be voted out of power in a 1988 plebiscite, but still managed to win …

Tales Of The Empathic Support Provider: How Emerging Adult Women Make Sense Of Providing Empathic Support To Female Friends, Emma R. Eslinger

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

The current study explored the stories and reflections of 33 emerging adult women who made sense of their empathic support provider (ESP) identity in the context of female friendships. From the standpoint of the retrospective storytelling heuristic, within communicated narrative sense-making theory, participants told stories about their ESP identity, including how they provide support to others and reflect on the benefits of drawbacks of serving in this role (CNSM, Koenig Kellas, 2022). Under Proposition 1 of CNSM theory, meanings, values, and beliefs (MVBs) that ESP women expressed in this role were depicted as key takeaways gathered. Findings illuminated how ESP …

Evaluating Variety- And Market-Class-Specific Effects Of Dietary Pulses On Human Health, Jiayu Tang

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

While pulses are globally recognized for their high levels of dietary fibers, protein, and polyphenols, research often focuses on characterizing the physiological effects of a single variety. This approach overlooks the substantial genetic and compositional diversity that exists across pulse varieties and individual market classes, which can differ extensively in nutrient content and structure. These compositional differences have the potential to produce distinct physiological and microbial responses in humans, yet variety- and market-class-specific effects remain poorly characterized.

This thesis uses two complementary research methodologies to investigate the health-relevant effects of different pulse varieties and market classes, providing foundational knowledge to …

Ethos: A Computational Framework For Material Culture Research, Chelsea L. Grafe

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

Museum catalog records make large collections searchable, but they do not always preserve the reasoning behind the claims they contain. A record may present a quilt's identity as settled while leaving the reasoning behind that claim invisible, making it difficult for later researchers to check, question, or reuse. This project asks whether museum catalog data can be analyzed in a way that keeps each analytical claim connected to the evidence that supports it. To test this question, the project applies a material-first computational framework named Ethos. Ethos formalizes an object-centered inquiry sequence in which material dependencies establish where analysis begins …

Crustal Structure Of The Vøring Plateau And Vøring Spur From Joint Refraction And Reflection Travel-Time Tomography, Anika Nawar Mayeesha

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

Crustal architecture of the Vøring Plateau and Vøring Spur in the mid-Norwegian continental margin remains debated because the geophysical data in the area do not uniquely constrain whether the crust is continental, oceanic, or transitional. This study reanalyzes wide-angle ocean-bottom seismometer data from Profile 11-03 across the Vøring passive continental margin using joint travel-time tomography of crustal refractions and Moho reflections. A total of 6,760 first-arrival picks and 542 PmP picks from sixteen instruments were inverted for P-wave velocity and reflector depth. Three starting models were inverted independently to test sensitivity to the initial crustal configuration. The first two used …

Observing System Simulation Experiments To Investigate Impacts Of Deep-Tropospheric Uas Flights On Forecasts, Kenneth Alexander Swan

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

Uncrewed aircraft systems have emerged as a promising option to address meteorological gaps in observations in the lower troposphere. With recent advancements, UAS may be able to address gaps aloft in areas that lack coverage from radiosondes and commercial aircraft. UAS have shown the potential to significantly benefit NWP forecasts from profiles in the lowest 2 km AGL, but the impact of UAS profiles to the tropopause has yet to be quantified. Additionally, the impacts of hazardous flying conditions that UAS would encounter need to be addressed to guide future UAS capabilities. To address these questions, we designed an observing …

Demographic Trends And Far-Right Party Support In Europe: The Role Of The Cordon Sanitaire, Maxwell Curry

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

This study examines whether cordons sanitaires, institutional exclusionary arrangements common in Western and Central Europe on the part of mainstream political actors aimed to prevent far-right political parties perceived as posing a threat to liberal democratic order from entering into governing coalitions or otherwise participating in mainstream political life, condition the relationship between immigration-related demographic change and support for far-right political parties. Contemporary scholarship has extensively examined the relationship between immigration and support for far-right political parties, but comparatively little research has examined the institutional factors that potentially condition such a relationship. In an analysis of parliamentary election data …

Evaluation Of A Vortex Flow Device On A Center Pivot Irrigation System, Ankit Chandra, Derek M. Heeren, Tyler Smith

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

This study presents the first independent field evaluation of a passive vortex flow device designed to reduce hydraulic friction in pressurized irrigation systems. Experiments were conducted on a full-scale, groundwater-fed center pivot irrigation system at the Eastern Nebraska Research, Extension, and Education Center (ENREEC). A paired comparison approach was used to quantify differences in flow rate, energy consumption, and pressure distribution along the pivot lateral under baseline (no device) and treatment (device installed) conditions. Results showed negligible change in system flow rate (621 vs. 618 gpm) and energy consumption (~1.2% difference), consistent with expectations for pressure-regulated irrigation systems. However, the …

Interview With Orca Award Winner Ross Thompson, Unl Psychology; Childhood Emotional Development, Mark Griep, Ross Thompson

UNL ORCA Interview Series

Ross Thompson was awarded the ORCA in 2000. He was born in 1954 in Madison, Wisconsin. He traveled nearly 2000 miles west to earn a bachelor’s in psychology magna cum laude from Occidental College in Los Angeles. Then, he traveled east over 2200 miles to earn a master’s and doctorate in psychology at the University of Michigan in Ann Arbor. In 1981, he joined the University of Nebraska-Lincoln as an assistant professor of psychology and rose quickly through the ranks while studying childhood emotional development. In 2003, three years after earning the ORCA, Ross left UNL to join the psychology …

The Process Of Alcohol-Involved Sexual Assault Disclosure: Examining Disclosure Content And Reactions From Informal Supports, Madison Elle Edwards

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

Alcohol-involved sexual violence (SV), in which unwanted sexual contact is attempted or obtained without consent during or after the victim’s alcohol use is a major public health issue among young women. Research consistently shows that alcohol-involved SV can have particularly harmful mental and physical health consequences. Moreover, survivors who were drinking are more likely to receive negative reactions (e.g., blame, minimization) when they disclose their SV experiences to informal supports (e.g., friends, family). These negative reactions are consistently linked to negative psychosocial outcomes. However, little research on negative disclosure reactions has examined the content of survivors’ disclosures. The present study …

Exploring Gene Regulatory Neural Network Biocomputing Of Bacteria, Adrian Merle Ratwatte

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

Artificial Intelligence (AI) has evolved from brain-inspired algorithms into a discipline that increasingly integrates with biological systems. While silicon-based platforms have advanced machine learning, they remain limited in energy efficiency and operation in environments beyond silicon. This motivates biological computing as an alternative, enabling efficient, resource-aware, and reconfigurable computing within living systems. This dissertation addresses these limitations by introducing a bacterial computing framework that models Gene Regulatory Networks (GRNs) as Gene Regulatory Neural Networks (GRNNs). The GRNN mirrors the structure and function of Artificial Neural Networks (ANNs) through gene-gene interactions across trans-omic layers, enabling natural, self-regulating information processing within living …

Effects Of Anchor Scheme On Torque And Neuromuscular Responses During And Following Fatiguing Isokinetic Forearm Flexion Tasks: Insights From High-Density Electromyography And Wavelet Analysis, Dolores Guadalupe Ortega

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

This study examined the effects of anchor scheme on torque and neuromuscular responses during and following fatiguing isokinetic forearm flexion tasks. Thirteen men (mean ± SD; age: 22.0 ± 1.9 yr; height: 183.0 ± 6.4 cm; body mass: 90.2 ± 18.1 kg) completed pretest and posttest maximal, concentric, isokinetic forearm flexion muscle actions at 30°∙s-1 before and after continual, concentric, isokinetic forearm flexion tasks at 30°∙s-1 at an RPE of 6 (RPE6T) and the torque (TRQ6T) produced during the first repetition of the RPE6T. Monopolar electromyographic (EMG) signals were recorded from the biceps brachii using a high-density EMG sensor. A …

Lost In The Weeds No More! Revision Of The Robust Herb Gall Wasps (Hymenoptera, Cynipidae, Aulacideini) In North America, Louis F. Nastasi, Charles K. Davis, José Luis Nieves-Aldrey, Cecil N. Smith, Simon Van Noort, Ebony G. Murrell, Timothy S. Frey, Chris Friesen, M. J. Hatfield, Heather M. Hines, John F. Tooker, Andrew R. Deans

Department of Entomology: Faculty Publications

We revise the North American fauna of Aulacideini (Hymenoptera: Cynipidae) using morphological, ecological, and genetic (DNA barcode) data, incorporating observations from over 5,000 adult specimens and galls. Prior to revision, the fauna included 24 species in four genera. Six new genera and 25 new species are described, all authored by Nastasi: Argyrix gen. nov., Barathria gen. nov., Cosmita gen. nov., and Ketsia gen. nov., for species previously placed in Antistrophus Walsh; Prixima gen. nov., for a new species inducing galls on Pyrrhopappus DC.; and Tookeria gen. nov., for a new species inducing galls on Silphium L.; Antistrophus frieseni sp. nov., …

The Relationships Between Perceived Quality Of Sexual Educational Experiences From Multiple Sources And Sexual Wellbeing Outcomes In A Sample Of U.S. College Women, Alex Diede

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

Sexual education comes from many sources and is important for sexual wellbeing. Much of the research on relationships between sexual education and sexual wellbeing has examined specific sources (e.g., schools or parents) and outcomes related to sexual risk-reduction, such as contraceptive use (e.g., Lameiras-Fernández et al., 2021; Widman et al., 2016). Less is known about the relationships between sexual education and positive sexual wellbeing outcomes. This study used a sample of college women to examine the relationships between the perceived quality of sexual education before college from four sources (i.e., caregivers, school, peers, self) and sexual wellbeing outcomes, including ego-focused …

A Compass For The Forest: Curriculum Opportunities In A Post-Liaison World, Meghan Otoupalik, Erica Defrain

University of Nebraska-Lincoln Libraries: Presentations

This poster highlights a project that reimagines what library instruction, faculty partnerships, and student impact looks like following the transition away from a liaison librarian model. Looking at the academic institution’s general education program’s learning outcomes that all undergraduates must complete, we found Information Literacy (IL) was already built into this multi-disciplinary program. The library was given access to the university’s repository of participating course documents and syllabi allowing us to analyze how the learning outcomes are being met, and even more insights into how IL is being taught across campus. We began a pilot program for the first of …

Butterfly Taxa Discovery Via Genomic Analysis, Jing Zhang, Qian Cong, Jinhui Shen, Leina Song, Nick V. Grishin

The Taxonomic Report of the International Lepidoptera Survey

Expanding a genomics-guided assessment of butterfly taxonomy, we integrate phylogenetic evidence from all protein-coding genes with morphological considerations to refine our understanding of butterfly systematics and discover new taxa. As a result, 2 subgenera, 39 species, and 5 subspecies are proposed as new (type species in original combinations or type localities are listed in parentheses): Erebia (Magda) magdalena uintana Grishin, ssp. n. (USA: Utah, Uintah Co.) in Nymphalidae Rafinesque, 1815; Myselasia rondea Grishin, sp. n. (Brazil: Rondônia), Myselasia pseudocrinon Grishin, sp. n. (Ecuador: Pastaza), Myselasia paramatuta Grishin, sp. n. (Ecuador: Morona-Santiago), Euselasia anapellos Grishin, sp. n. (Peru: Loreto), …

Interview With Orca Winner John Hibbing, Political Science; How Political Attitudes Correlate With Physiological Traits, Mark A. Griep, John Hibbing

UNL ORCA Interview Series

Dr. John Hibbing was awarded the ORCA in 1993. John was born in 1953 in Paullina, Iowa. He earned a bachelor's in secondary education from Dana College in Blair, Nebraska, but then realized that teaching high school wasn't for him. Instead, he attended the University of Iowa, where he earned a master's and doctorate in political science. In 1981, he joined the University of Nebraska-Lincoln as an assistant professor of political science and rose quickly through the ranks. Initially, he studied the reasons that members of the U.S. Congress retire. This led to a longer-term collaboration with Kevin Smith and …

Teacher Culturally Sustaining Practices Supported By Generative Ai: Instrument Development, Guy Trainin, Azadeh Hassani, Shuling Yang

Research and Evaluation in Education, Technology, Art, and Design

Generative AI (GenAI) carries the dual potential to reproduce educational inequities and to expand opportunities for multilingual support, critical evaluation, and personalized learning. This paper reports the development and initial validation of an instrument measuring K-12 literacy teachers' perceptions of GenAI's capacity to support culturally sustaining pedagogy. Grounded in culturally sustaining pedagogy (CSP) and its asset-based commitments, the instrument operationalizes three constructs, namely academic success, cultural competence, and critical consciousness, across both teacher and student use. Items were drawn from the CSP literature and refined through cognitive interviews, then administered to 109 PK-12 language arts educators. Reliability was strong for …

Increasing Fifth-Grade Students’ Motivation To Read Through The Use Of Thematic Units, Irina Anatolyevna Belikova Erickson

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

Elementary students’ motivation to read decreases as they advance to upper elementary grades. Reading motivation impacts students’ reading achievement. Only 31% of American fourth-grade students demonstrated proficiency on NAEP, the nation’s report card, in 2024. A need for research-based instructional strategies exists, as teachers can directly affect students’ motivation to read with carefully selected interventions. This action research study examined thematic units as an instructional intervention. In their instructional implementation of thematic units, teachers relied on the constructs of autonomy, competence, and relatedness originated from the Self-Determination Theory (SDT) (Deci & Ryan, 1985; Ryan & Deci, 2017). Satisfying the basic …

The Examination Of Additional Creative Applications To Drum Set Method Books, Nathan Bjoin

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

The purpose of this document is to analyze how the concept of additional creative applications is approached and utilized by authors of drum set method books and how it can be practically applied for different skill and educational levels. This document will begin with an examination of a variety of drum set method books, outlining the technical (syncopation patterns, drum grooves, and four-limb independence) and musical improvements (personal musical exploration or repertoire) they aim to provide for the reader. Included within the examination is how creative additional applications are employed from each author in a variety of ways, including through …

Beyond Borders: Educator Identity Development Through Sustained Intercultural Engagement In Rotary Youth Exchange, Lisa L. Waechter-Cass

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

This qualitative study employed collaborative narrative inquiry, informed by autoethnographic reflection, to examine how sustained intercultural engagement through Rotary Youth Exchange (RYE) shaped my evolving educator identity, self-efficacy, and enactment of globally responsive teaching within a rural elementary classroom. Guided by McAdams’ Narrative Identity Theory and supported by Bandura’s Self-Efficacy Theory, the study explored how long-term intercultural relationships and reflective dialogue influenced my understanding of teaching, learning, belonging, and global citizenship.

Data sources included reflexive journals, semi-structured interviews with former Rotary Youth Exchange students with whom I developed enduring family relationships through hosting experiences, and personal and educational artifacts …

Diagnosis Of Covid-19 Impact On The Construction Employment: Decline And Recovery, Anil Baral, Abdullah Alnuaimi, Yunping Liang, Baabak Ashuri, Mohsen S. Shahandashti

Durham School of Architectural Engineering and Construction: Faculty Publications

The Coronavirus Disease 2019 (COVID-19) had an unprecedented impact on U.S. construction employment. The assessment of employment declines and recoveries across various construction sectors, workforce demographics, and geographic regions helps develop inclusive long-term plans to overcome the setbacks of natural hazards, such as the COVID-19 pandemic. Existing methods for quantifying the employment decline from sudden shocks do not consider trends and seasonality of construction employment under normal conditions. Hence, it is not clear whether the employment declines are due to the impact of a disaster or associated with trends and seasonal patterns of employment. The objective of this research is …

First Peer Review Course Portfolio: Management 101: Introduction To Business, Shawntell Kroese

UNL Faculty Course Portfolios

Management 101: Introduction to Business is a foundational undergraduate course serving approximately 1,500 students annually across four sections. The course introduces students to management, marketing, accounting, economics, finance, supply chain management, and strategy through a highly experiential learning model. A signature component of the course is the Business Battle, a “real-life” consulting challenge where students solve authentic business problems presented by a Company (this year it was MotoAmerica). The course combines large-scale instruction with a peer coaching model, active learning exercises, recitations, industry speakers, and team-based projects. This portfolio examines course design, instructional methods, student learning outcomes, and future opportunities …

Interview With Orca Winner Xiao Cheng Zeng; Unl Chemistry; Computational/Theoretical; Nebraska Ice & Gold Nanocages, Mark Griep, Xiao Cheng Zeng

UNL ORCA Interview Series

Xiao Cheng Zeng became a chemistry professor at the University of Nebraska-Lincoln in 1993, quickly rose through the ranks, and was in the department for 29 years. In 2022, he left to become head of the Department of Materials Science and Engineering at the City University of Hong Kong. Xiao was born in Beijing and earned a bachelor’s in physics at the University of Beijing in 1984. Next, he traveled 6800 miles east to Ohio State University in Columbus where he earned his doctorate in condensed matter physics. He followed that up with two postdoctoral experiences, first at the University …

Statistical Methods In Research, Horahenage Dixon Vimalajeewa

UNL Faculty Course Portfolios

This course portfolio documents the design, delivery, assessment, student-learning evidence, and reflective evaluation of STAT 801A-700: Statistical Methods in Research, an online asynchronous service course designed to introduce students from diverse disciplinary backgrounds to foundational statistical reasoning and applied data analysis. The course is a non-calculus-based introduction to statistical methods used to answer research questions, with emphasis on collecting, organizing, describing, analyzing, and drawing conclusions from data. The course also emphasizes applications relevant to biology, agriculture, and other research-oriented fields. This is an online distance course aimed to develop students’ understanding of basic probability and statistical concepts, recognize the importance …

Course Portfolio: Elements Of Physics Phys 151, Evan A. Rich

UNL Faculty Course Portfolios

This course portfolio documents the instructional design, teaching methods, and ongoing assessment efforts for PHYS 151: Elements of Physics, an algebra-based introductory physics course at the University of Nebraska-Lincoln. The course serves a broad undergraduate population, including architecture, construction management, and life science majors. The portfolio describes the teaching framework that integrates pre-lecture video preparation, active in-class engagement through iClicker questions, and collaborative weekly recitation sections, all unified around a structured six-step problem-solving approach. A central concern of the course is building students’ self-efficacy in physics, particularly among those with math anxiety or limited preparation. Two assessments are reported: a …

First Course Portfolio For Plpt 803 Fundamentals Of Scientific Discovery, Hernan Garcia-Ruiz

UNL Faculty Course Portfolios

PLPT 803 Fundamentals of Scientific discovery is a new curse in the Department of Plant Pathology at the University of Nebraska-Lincoln. I designed and developed this course from the ground up. Initially, it was offered as a special topic (PLPT 892-014) for four years. PLPT 803 was approved by the College of Agricultural Sciences and Natural Resources curriculum committee in September of 2025. PLPT 803 is unique within the University of Nebraska system and will be offered for the first time in the fall of 2027. The course is designed for students to learn fundamental scientific skills such as scrutinize, …