Digital Commons Network^™

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 …

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, …

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 …

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 …

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 …

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 …

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., …

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 …

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 …

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 …

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 …

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, …

Performance Of Illustrations And Images As Language In Sarnath Banerjee’S All Quiet In Vikaspuri, Akanksha Barthwal Ms

SANE journal: Sequential Art Narrative in Education

Sarnath Banerjee’s All Quiet in Vikaspuri, fictionalizes but at the same time addresses water wars and political ideologies in the city of Delhi. By the means of eco-critical approach in the name of Vi-kas (development) Banerjee discuss the acts of slow violence subverted on nature in the name of progress (vikas). Through text/ images the author depicts chaos and challenges for the readers in more direct and obscene ways. The current paper attempts to look at Banerjee’s illustrations and images as new form of language emerged in modern Indian literature with the possibly that illustrations have more effect on …

Construction Project Administration: Course Portfolio, Andre Messner

UNL Faculty Course Portfolios

This portfolio presents a structured framework for the design and implementation of a construction project administration course within a Construction Management program. Emphasis is placed on aligning student learning objectives, instructional strategies, and assessment methods with current industry expectations and professional standards. The course is intentionally designed to bridge the gap between theoretical knowledge and practical application by incorporating real-world scenarios, collaborative learning environments, and experiential activities that mirror industry practices.

In addition to outlining the course structure, this paper examines the pedagogical foundations that support student-centered learning, including constructivism, scaffolding, and project-based learning. These approaches are used to foster …

Increasing Students’ Self-Efficacy In Consuming, Conducting, And Disseminating Neuroimaging Research: Experiences From Teaching Edps 991: Social And Affective Neuroscience, Isabella Starling Alves

UNL Faculty Course Portfolios

Social and emotional factors are critical for learning, being core aspects of the educational  psychology curricula. Recently, neuroimaging has emerged as a powerful tool to  comprehend the neurobiological factors underlying these factors. Yet, many educational  psychologists have low familiarity with neuroscience research. The course EDPS 991:  Social and Affective Neuroscience, from the Department of Educational Psychology at the  University of Nebraska-Lincoln, emerges in this context, training educational psychology  graduate students to consume, conduct, and disseminate findings about how the brain  relates to socioemotional processes. One challenge related to the course is that many  students feel anxious about learning the neuroimaging …

The Effect Of Partisan Group-Based Emotions On Immigration Attitudes, Samantha Michelle Wiener

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

This dissertation utilized a cognitive appraisal theory of emotion perspective to study the role of partisan group-based emotion in immigration attitude formation to better understand partisan immigration attitudes and preferences in the United States. Across one correlational and two experimental studies, this research showed that partisan group-based emotions predicted immigration attitudes significantly distinctly than do individual-level emotions. The first and third papers showed that group-based emotions predicted immigration attitudes. The second highlighted the role that individual-level empathy plays in immigration preferences. Taken together, to more fully understand how Americans form attitudes towards immigrants and immigration, researchers must account for both …

Robert, Powers; Unl Chemistry; Nmr-Assisted Drug Discovery, Mark Griep, Robert Powers

Department of Chemistry: Faculty Interviews

Dr. Robert Powers became a chemistry professor at the University of Nebraska-Lincoln in 2003 and is about to retire after 23 years. Prior to UNL, Bob was a drug discovery researcher for 11 years at American Cyanamid, which eventually became Wyeth and is now part of Pfizer. Bob was born in Jersey City, New Jersey. Something in his youth must have sparked an interest in chemistry because he earned a bachelor's in that subject from Rutgers University in New Brunswick. Then he traveled 1200 miles west to Purdue University in Indiana where he earned his doctorate. Next, he did postdoctoral …

Recognition Of The Spring Flight Of Celastrina (Tutt) (Lycaenidae: Polyommatinae) In Southern New England As An Introgressed Hybrid Species, Harry Pavulaan

The Taxonomic Report of the International Lepidoptera Survey

Populations of Celastrina (“Azure”) butterflies in southern New England have historically been referred to as either C. ladon (Cramer) or C. lucia (W. Kirby) by various authors. Following the discovery of elongated dorsal wing scales in males of C. ladon (D. Wright & Pavulaan, 1999; Ômura et al., 2015)—structures that replace the androconia that are typically present in most Celastrina species—it was believed that this trait was restricted to C. ladon, C. nigra (W. Forbes), and, more recently, C. iryna (Pavulaan, 2025). Microscopic examination of male “Spring Azure” specimens from across southern New …

Akan Proverbs And Social Media Commentary: The Representation Of Women In Ghanaian Society, Richard Ayertey Lawer

Department of English: Dissertations, Theses, and Student Research

This study examines how gender ideologies embedded in Akan proverbs are reproduced, negotiated, and contested within contemporary Ghanaian digital discourse. Drawing on feminist rhetorical analysis and digital discourse studies, the research analyzes a purposive sample of 25 Akan proverbs and 36 social media posts and comments from Facebook, Instagram, and TikTok (2022–2025) focusing on women in public roles. The study demonstrates that Akan proverbs function as enduring ideological resources that construct women’s agency as conditional, subordinate, and morally regulated. These ideological patterns are recontextualized in digital spaces through both explicit citation and implicit proverbial reasoning, where users mobilize cultural logics …

Sit-To-Stand: Smart Physical Therapy Device Design Project, Mollie Petersen, Evie Collier, Gracie Kniss, Lucas Sokolik, Jacob Zitek

Honors Program: Senior Projects (Public)

Mechanical engineering students in their last year are provided with the opportunity to form a small group and design a product. The specific project covered in this report is the creation of a smart attachment to a physical therapy device. A sit-to-stand piece of equipment is used to help patients recover or build the strength to move from a sitting to standing position after an injury or illness. Currently, there is not a way for physical therapists to collect numerical data while a patient is using the equipment. Much of their care plans are built off of personal perception and …

Oxide Failures In Sic Power Mosfets, Kate L. Smith

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

Ramp to breakdown (RTBD), constant voltage time dependent dielectric breakdown (CVS-TDDB), and low-field long term (LFLT) tests were performed on commercially available silicon carbide MOSFETs from four manufacturers in discrete, TO-247 packaging (A, B, C, and D). Voltage and temperature stress factors are examined for their impact on oxide breakdown. “High temperature gate bias stress test of silicon carbide MOSFETs from multiple manufacturers were performed. It was found that some extrinsic oxide failures are an ongoing problem. The results of the tests and lifetime analysis are presented” (Oxide Failures in SiC Power MOSFETs).

Interparental Relationship Quality Reduces Parental Stress And Subsequent Family Dysfunction Across Pregnancy And Early Childhood, Rachel Clara-Beth Beck

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

In this multiple paper dissertation, I found that a higher quality interparental relationship, characterized by more emotional intimacy, support, responsiveness and better conflict management skills, plays a key role in reducing stress and its subsequent impact on family dynamics. Aims and hypotheses were tested using longitudinal data collected from mixed-sex couples during the pregnancy-postpartum transition and into early childhood. In study #1, higher quality interparental support during pregnancy was associated with lower postpartum stress which, in turn, predicted fewer parent–infant bonding impairments. In study #2, a mutually responsive orientation in the couple relationship during pregnancy interacted with intrapersonal regulatory resources …

Online Legislation: Developments And Trends In Data Privacy And Software Development, Garrett J. Splinter

Honors Program: Senior Projects (Public)

The increasingly relevant interaction between the law and data privacy, as well as compliance requirements enforced by the United States, is currently in a state of transition. Various states, such as California, Colorado, Connecticut, Nebraska, and many others, all have passed legislation with varied requirements and definitions that make for a challenging framework in which software developers operate, as the universal nature of the internet renders their compliance with current legislation a challenge. Enforcement also tends to be relatively relaxed in most modern examples, though it has escalated after 2020, and this trend may continue in the future, lending credence …

Analysis Of Dynamic Difficulty Scaling Ai In Video Games, Tyrese W. Walker

Honors Program: Senior Projects (Public)

Video games are a popular form of interactive media and, since their inception, have become one of the largest forms of media consumed. As such, they have evolved greatly from their humble beginnings into much more complex experiences, and adjusting the difficulty level to suit the needs of the player has become common practice. While there are simple ways to do so, the best games often feature a dynamic difficulty-scaling system that adapts to the player. Classics like Resident Evil and Left 4 Dead are excellent examples of innovative dynamic scaling design. By analyzing the strongest elements of these works, …