Digital Commons Network^™

Mash Crashworthiness Of Work Zone Devices And Breakaway Luminaire Poles, Mohammadreza Rajaee

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

This thesis presents a study on the crashworthiness of two commonly-used roadside safety devices: Type II barricades and luminaire poles supported by TB1-17 transformer bases. The first part focuses on designing and evaluating a non-proprietary, Type II barricade that meets MASH criteria. A validated LS-DYNA model, based on a previously-tested Type III barricade, was used to guide the design. The proposed Type II system was evaluated through simulation and confirmed with full-scale crash testing. The second part of the study investigates luminaire poles supported by the TB1-17 transformer base. A previously-developed LS-DYNA model was updated and validated using test No. …

A Framework For Quantifying The Benefits Of Electric Vehicle Infrastructure Development, Donya Negahbani

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

Under the Biden Administration’s Justice40 Initiative, a significant portion of benefits derived from federal clean transportation investments is required to be directed to disadvantaged communities. Meeting this mandate necessitates a transparent and reproducible approach that quantifies various dimensions of value and allocates them equitably. This dissertation presents a flexible framework specifically tailored for the deployment of electric vehicle charging infrastructure in Nebraska, effectively translating equity goals into rigorous spatial and economic analyses. The framework first identifies multiple distinct categories of benefit that reflect the societal value of charging access: energy savings, economic opportunities, environmental quality enhancements, and public health improvements. …

Development Of Timber Bridge Railing And Approach Guardrail Transition, Aaron Lechtenberger

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

Timber bridges with transverse and longitudinal bridge decks are increasingly utilized across the United States. However, limited research exists to develop bridge railing systems for high-service-level roadways that meet current vehicular impact safety standards. In response to this gap, the United States Department of Agriculture - Forest Service -Forest Products Laboratory (USDA-FS-FPL), in collaboration with the Midwest Roadside Safety Facility (MwRSF), initiated a research program to develop, crash test, and evaluate higher-service-level bridge railings and approach guardrail transitions (AGTs) compliant with the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware (MASH).

This study continued …

Addressing Structural Violence In Eastern Nebraska Through The Assessment Of Mortality Profiles, Victoria M. Pate

Department of Anthropology: Theses and Student Research

Humanitarian forensics has recently expanded to include the examination of forensic casework demographics within the medicolegal community. Additionally, it is proposed that research and data collection should look beyond the individual case report to address public health, crime vulnerabilities, and marginalization at local and national levels to advocate for policy changes protecting against institutionalized violence. With the utilization of quantitative and qualitative methods, 294 case reports provided by Nebraska police departments, between the years of 2014-2024, were analyzed to conceptualize mortality vulnerabilities and the ways in which forensic anthropologists can aid in community action. Pearson’s Chi-Square and one-way Analysis of …

A Semiotic Comparison Of Mayan And Egyptian Hieroglyphs In Relation To Cosmological Beliefs, Annmarie Vazquez

Department of Anthropology: Theses and Student Research

Hieroglyphs, as a formal writing system, encode information reflective of a culture’s beliefs and worldviews and comprise inscriptions that represent objects (logograms), ideas (ideograms), or sounds (alphabetic or syllabic).  In this thesis, I employ semiotics, the study of how meanings are created by signs and symbols, to investigate Late Classic Maya (~250-990 CE) and Middle Period Egyptian (2240- 990 BCE) hieroglyphs that are associated with cosmological beliefs. In particular, I focus on Egyptian and Mayan hieroglyphs of birds and snakes as well as many other hieroglyphs of nature and celestial bodies. A semiotic approach provides new insights into the understanding …

Educational Leadership In A Vuca World: The Crisis Management Experiences Of Rural School Superintendents, Lucas J. Grossnicklaus

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

The job of both urban and rural superintendents is challenging, but it is the rural school superintendency that comes with unique challenges that aren’t always faced by their urban and suburban counterparts. The COVID-19 Pandemic brought about a number of crises for school superintendents such as school closures, mask mandates, and navigating positions taken by governors, teachers unions, and school boards. While concerns about school closures and mask mandates has dissipated, conflict within school districts has only seemed to grow since the pandemic.

This multi-case study explored the lived experience of rural superintendents in the Midwest who have experienced a …

Robot-Integrated 4d Building Information Modeling (4d Bim): Framework For Planning Safe Autonomous Construction Operations In Dynamic Environments, Hafiz Oyedimeji Oyediran

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

In the construction industry, the use of autonomous robots is considered a solution to overcome the heavy reliance on human workers to perform repetitive, strenuous, and hazardous tasks. While these robots offer the advantage of autonomous operation, ensuring their safe and efficient integration within construction sites requires precise planning. Such planning must account for the varying project complexities such as scope, site layout, tasks, timelines, existence of human workers, and other spatiotemporal conditions of the construction site. Currently, there are no methods to safely plan autonomous robot operations considering these factors within the overarching construction planning process. Thus, autonomous robots …

Considerations And Techniques For Producing Urban Tree Canopy Maps Using Freely Available And Accessible Methods, Hugh Reed Ellerman

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

Urban forests are valued as green infrastructure for the variety of benefits they provide across ecological, social, public health, and economic domains. To understand the distribution of trees, maps are required. Many methods of mapping tree cover use expensive and data-intensive datasets such as hyperspectral and LiDAR imagery, making these methods inaccessible to municipal forest managers. Variations in the modelling approaches of existing, freely available methods are not addressed in sufficient enough detail to understand the trade-offs implicit in these variations. Further, characteristics of urban tree canopy mapping (high spatial resolution imagery, heterogeneous urban environments, the importance of the tree …

Gonadotropin-Releasing Hormone Ii And Its Receptor: Novel Regulators Of Semen Quality And Follicular Function In Swine, Caitlin Elizabeth Ross

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

Pigs are the only mammalian livestock species encoding functional proteins for the second form of gonadotropin-releasing hormone (GnRH-II) and its receptor (GnRHR-II). In the first study, GnRHR-II localized to developing germ cells and the connecting piece of ejaculated spermatozoa. Concurrently, GnRH-II was most abundantly produced in the testis compared with other reproductive tract organs and was present within seminal plasma. Moreover, treatment of extended semen with GnRHR-II analogues altered sperm motility, morphology, and kinematics. For remaining studies, we utilized a swine line with ubiquitous knockdown of GnRHR-II (GnRHR-II KD) developed in our laboratory. The second study demonstrated that circulating GnRH-II …

Equipping Teachers To Support Comic Literacy: An Analysis Of The Educational Potential Of Toon Book, Kayla Whitlock, Jewel Yoder Kuhns, Sara Kersten-Parrish Dr.

SANE journal: Sequential Art Narrative in Education

Teachers frequently reach for leveled readers to help facilitate their guided reading groups; however, there can be limits in using these leveled readers. One such limit relates to enjoyment and engagement. An answer to this is using TOON books during guided reading time. TOON books are graphic novel leveled readers and were created in response to a need for high quality books for readers of all levels. However, in reading these books teachers need to be aware of the comics form and how those features impact the reading process. In this article, we outline the features common in graphic novels …

Mapping Mosquito Habitats With Girl Scouts: A Citizen Science Approach Using The “Mosquito Mission: Scout & Report!” Worksheet, Claire A. Klein

Honors Program: Senior Projects (Public)

Mosquitoes, though small, impact millions around the world by being significant vectors of diseases. The search for effective mosquito control efforts is ongoing, however, there is a gap in community involvement with a focus on recognizing and reducing potential breeding areas. Public engagement is a cornerstone of effective mosquito control. This honors thesis investigates the implementation of the Mosquito Mappers program with an original Girl Scout worksheet, “Mosquito Mission: Scout & Report!” This worksheet, which utilizes NASA’s GLOBE Observer Mosquito Habitat Mapper app, enables the Girl Scouts to contribute to real-time environmental monitoring. By guiding Girl Scouts through an inquiry-based …

Systemic Failures Of The Criminal Justice System, Isabella Lucero

Honors Program: Senior Projects (Public)

America’s history as a nation that was founded on the unjust treatment of the people of color has forever shaped the way our justice system has evolved. From slavery to “Black Codes” to Jim Crow Laws, the system has never been set up for equal administration of justice. The purpose of this essay is to evaluate how the Criminal Justice System disadvantages and targets individuals at all stages of justice involvement, with a particular focus on individuals from communities of color.

Parody And Mis-Unda-Stendings In Comics Art World: Bridging The Gap With New Criteria, Yannis Koukoulas

SANE journal: Sequential Art Narrative in Education

The word parody and its many cognates such as appropriation, adaptation, pastiche, travesty, forgery, homage, tribute, swipe, etc., have often been at the centre of fierce debates within the traditional Artworld and various criteria have been proposed for the critical evaluation of visual and literary works. In particular, parody as a dominant practice in postmodern art is a concept that is subject to misunderstandings as to its content and meaning. In Comics Artworld, however, within which recontextualizing practices are very common, often with humorous content, the attempt to describe artists' works and intentions by the criteria applied to other arts, …

Economic Considerations For The Transition To Organic Farming: Insights From The 2023 Conference, Asa B. Stone, Katja Koehler-Cole, Ronald Christian Stephenson

Cornhusker Economics

Introduction

The Transition to Organic Farming Conference, led by Katja Koehler-Cole and sponsored by the Nebraska Extension and the USDA-TOPP (Transition to Organic Partnership Program), aimed to equip farmers with the essential knowledge for effective agronomic management. Focusing on overcoming challenges related to soil fertility and weed control, the conference served as a platform for both education and community building. It provided crucial insights into the economic considerations faced by farmers transitioning to organic practices, underscoring the economic complexities and benefits associated with this transition. The conference highlighted the need for comprehensive support systems to aid farmers in making informed …

Enhancing Faculty Preparedness To Teach Students With Learning Disabilities: A Community College Insight, Mayda Gonzalez

Instructional Leadership Abstracts

Conclusion

As more students with learning disabilities enroll in college, faculty preparedness and the support institutions provide have become increasingly important. Despite some progress, a graduation gap still exists, highlighting the need for meaningful change. This study emphasizes that welltrained faculty are essential for creating inclusive classrooms. Educators can establish environments where all students can thrive by utilizing Universal Design for Learning (UDL), adaptable teaching methods, and fostering positive attitudes.

To help close this gap, institutions must invest in ongoing, research-based professional development. Mandatory training will equip faculty with the tools to support neurodiverse students effectively. By implementing these changes, …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #67 April 2025

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President's message, Deb VanOverbeke

Student awards: Outstanding Junior Lara Arnold, Outstanding Senior Emily Eilers, Graduate Award Caitlin Ross

Dues and membership information

Faculty awards: Research Award Samodha Fernando, Teaching Award Gary Sullivan, Extension Awards Jenny Nixon and Bijesh Maharjan, Award of Merit Mike Boehm

Gamma Sigma Delta committees 2025

Foundation fund information

New members inducted

In memoriam: Dorothy "Dotti" Mott Callahan (May 4, 1942-August 12, 2023); Frank Michael Zoz (November 5, 1936-December 9, 2023); Duane Calvin Acker (March 13, 1931-December 13, 2024); John C. Owens (1944-2024); Duane A. Olson (July 17, 1935-January 5, 2025); Roger W. Mandingo (April 21, 1939-January …

Teaching As Advocacy: Bridging The Gap Between World Language Classrooms And Community, Xinquan Liu, Guy Trainin, Chunmei Guan, Hangxin Yu

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

World Language education in the United States faces significant challenges, including declining enrollments and diminished community support. This paper introduces Teaching as Advocacy as a proactive framework to address these issues, proposing a mindset that integrates advocacy seamlessly into teaching practices. By leveraging community engagement and emphasizing "Connection" and "Community," the framework extends classroom learning into real-world contexts. Strategies such as cross-disciplinary collaborations, service-learning projects, partnerships with ethnic communities, and strategic use of social media amplify the impact of language education, demonstrating its value through tangible outcomes. This paper offers practical examples to showcase how Teaching as Advocacy revitalizes World …

Blanket Statements, Issue 168, Spring 2025

Blanket Statements: News Publication of the American Quilt Study Group

Blanket Statements, Issue 168, Spring 2025

Step-By-Step Guide To Uploading Your Master’S Thesis, Doctoral Dissertation, Or Other Student Work In The Unl Digital Commons, Paul Royster, Sue Ann Gardner

Thesis and Dissertation Deposit Information Resources

This is a step-by-step guide to online deposit procedures for UNL theses and dissertations. The same steps are used for both theses and dissertations.

Note:

Deposit of master's theses in the UNL Digital Commons is required, not optional.

Deposit of doctoral dissertations into ProQuest/Clarivate is required while deposit into respective departmental series in the UNL Digital Commons for public access is optional, but recommended.

Tillamook: Ethical Values Or Misleading Marketing?, Victoria Chin, Ealynn Hsu, Kyana Le, B Littman, Natalia Trejo Andalon

B-Corp Case Studies by UNL Raikes Seniors

Tillamook began as a humble cooperative for the local dairy farmers of Tillamook County, Oregon, to ensure that high-quality cheese was the local standard. As time passed, Tillamook evolved to establish an internal Farm Services Team to help support each farmer and pay above market value for members’ milk–in return, receiving a stable supply of dairy to manufacture its dairy-based products. Additionally, the farmers are still the ones who call the important shots for Tillamook rather than other corporate shareholders. Tillamook County Creamery Association (TCCA) has since expanded nationally, but the foundation remains the same: high-quality dairy to create high-quality …

Water Current, Volume 57, No. 1, Spring 2025

Water Current Newsletter

No abstract provided.

Shakespeare’S Early Histories And The Construction Of Government, Paul Olson

Department of English: Faculty Publications

Shakespeare’s first tetralogy has been treated as an account of the reinvention of government, especially a Hobbesian reinvention demonstrating how authoritarian government forces order out of chaos. This article argues that, though Hobbesian elements present themselves, Shakespeare employs subtexts available to his time and place to speak of how orderly government is constituted: that is, he relies on accounts of the Fall from perfection into chaos and the return from it through divinely blessed kingship that are present in syncretic readings of Ovid and the Bible. The two subtexts give order to the progress from Fall into chaos and back …

Genetic And Soil Influences On The Grapevine Rhizosphere Microbiome, Lauren M. Quackenbush

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

In vineyard cropping systems, the rhizosphere microbiome arises through recruitment and filtering of the bulk soil microbiome shaped over time by soil carbon and nitrogen, climate, pH and historical legacies of vineyard management. The recruitment and filtering steps occur under the genetic influences of rootstock and scion that together drive variability in rhizosphere microbiome diversity and composition.

This study compares rhizosphere microbiomes of four Pinot Noir blocks under two rootstocks (101-14 and 420A) and four scions (777, 828, Calera, Mt. Eden). Core microbiomes were consistent across all replicates. The most abundant bacterial phyla were Actinobacteriota, Proteobacteria, and Acidobacteriota …

Aging-Related Hearing Decline And Resting State Networks, Cassidy S. T. Ellsworth

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

This study investigated the effects of age-related hearing decline on functional networks using resting-state functional magnetic resonance imaging (rs-fMRI). The main objective of the present study was to examine resting-state functional connectivity (rsFC) and graph theory-based network efficiency metrics in forty-nine adults categorized by age and hearing thresholds to identify the neural mechanisms of age-related hearing decline. RsFC within key brain networks and auditory-related brain regions, including the default mode network, salience network, dorsal attention network, and primary auditory cortices, was assessed using region-of-interest (ROI)-based and graph theory approaches. Functional metrics, such as rsFC strength and global and local efficiency, …

Clinical Case Study: The Effects Of Saltatory Pneumotactile Stimulation Of Glabrous Hand And Perioral Face On Cerebral Oxygenation, Cognitive Performance, And Sensorimotor Function In An Adult Following Left Hemorrhagic Stroke, Tara L. Hull

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

Stroke remains a leading cause of adult disability and a significant global health concern. Effective rehabilitation strategies for cognitive and communicative impairments following stroke are limited (Kuhn & Sharman, 2023). One emerging approach involves repetitive somatosensory stimulation to drive cerebral hemodynamic changes, potentially offering a novel rehabilitative method. Functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive, accessible tool for monitoring these changes during stroke recovery. Prior studies suggest tactile stimulation rapidly affects brain hemodynamics (Custead et al., 2015; Oh et al., 2017). This clinical single-case study explored the use of GALILEO saltatory pneumotactile stimulation applied to the face and hand in …

Music And Word Learning In Children Diagnosed With Developmental Language Disorder, Rebekah G. Sweeney

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

Purpose: This study investigates whether incorporating music into vocabulary interventions improves rate of learning and retention of words in children with developmental language disorder (DLD). Emerging literature continues to show the plentiful benefits of music as a tool for intervention in many settings, including the world of speech pathology (Levitin, 2024). However, it is also evident that there is a connection between struggling with language, and struggling with musical elements, such as rhythm and pitch perception, particularly in children with DLD (Boorom et al., 2022; Kreidler et al., 2023). This study seeks to tease out if music is an effective …

Investigating Child-Informed Considerations For Animated Picture Symbols Representing Emotion For Aac Use In Children With Asd, Hannah Kitsmiller

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

Development of emotional competence is an important area of consideration when supporting individuals who use augmentative and alternative communication (AAC). Emotional competence includes skills related to identifying and communicating about one’s emotions. Individuals who use AAC may struggle to develop strong skills in emotional competence. One potential barrier to developing emotional competence may be access to symbols that facilitate understanding of the represented emotion. Emotions are abstract and challenging to represent in visual symbols. Additionally, evidence suggests individuals with autism spectrum disorder (ASD) may have visual perceptual differences when viewing faces. Current emotion symbols are often depicted using isolated facial …

Controlling The Narrative: How The United Daughters Of The Confederacy Shaped Collective Memory Through Romance Novels, Karie L. Cobb

Department of English: Dissertations, Theses, and Student Research

While existing scholarship on the United Daughters of the Confederacy (UDC) reveals the immense influence the organization wielded in the nineteenth and twentieth centuries, I assert that their legacy has had a broader and more insidious reach than previously believed. Through close analysis of two foundational romance novelists’ works published during the rapid escalation of the genre’s popularity, I contend that the rhetoric of the UDC shaped generations of Southerners as demonstrated through repetitions and parallels of the Lost Cause ideology found in UDC publications and sponsored materials within romance novels written by white Southern women who came of age …

The Reality Of Transformation: A Case Study Of An American Community College Implementing Holistic Student Supports, Calie Marie Holden

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

This dissertation examines the implementation of Holistic Student Supports at a community college that served as an early adopter of this approach, providing insights into the decade-long process of transformational change. Against the backdrop of community colleges' ongoing efforts to improve completion rates, this study investigates how one institution navigated the implementation process, made necessary adaptations, and sustained reform efforts over time. Through document analysis, semi-structured interviews, and a focus group, this study documents the evolution of this initiative from its inception in 2010. Kotter's Eight-Step Change Model frames the analysis, which confirms the model's applicability and extends it by …

Transgender And Gender Diverse Young Adults’ Navigation Of Sexuality: What Mental Health Providers Need To Know, Sage A. Volk

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

Though literature has documented that TGD individuals may face unique challenges when attempting to develop healthy romantic and sexual relationships (Hill-Meyer & Scarborough, 2014), research has also identified that intimate partners can serve as an immeasurable source of support and resilience for their TGD partners (Coppola et al., 2021; Galupo et al., 2019). While there is strong evidence to support the importance of TGD individuals developing healthy intimate relationships, there is little guidance in the literature for mental health providers wanting to discuss these domains with TGD clients in psychotherapy (Spencer and Vencill, 2017).

The present study addresses this gap …