Digital Commons Network^™

A Novel Graph Neural Network-Based Framework For Automatic Modulation Classification In Mobile Environments, Pejman Ghasemzadeh

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

Automatic modulation classification (AMC) refers to a signal processing procedure through which the modulation type and order of an observed signal are identified without any prior information about the communications setup. AMC has been recognized as one of the essential measures in various communications research fields such as intelligent modem design, spectrum sensing and management, and threat detection. The research literature in AMC is limited to accounting only for the noise that affects the received signal, which makes their models applicable for stationary environments. However, a more practical and real-world application of AMC can be found in mobile environments where …

Translanguaging In World Language Higher Education, Alessia Barbici Wagner

Department of Teaching, Learning, and Teacher Education: Theses and Other Student Research

Increased global migration and a myriad of other social and political factors has made today’s universities more diverse than ever. As a result, teachers in higher education regularly find multilingual learners from a variety of different linguistic and cultural backgrounds in their classrooms and must consider this diversity in their teaching. One of the ways that teaching can better serve today’s multilingual and multicultural student population is through translanguaging. The objective of this dissertation is to investigate the intentional and unintentional use of translanguaging by multilingual language learners and world language instructors in higher education. Additionally, this qualitative case study …

Rehybridization Dynamics Into The Pericyclic Minimum Of An Electrocyclic Reaction Imaged In Real-Time, Y. Liu, D. M. Sanchez, M. R. Ware, E. G. Champenois, J. Yang, J. P. F. Nunes, A. Attar, Martin Centurion, J. P. Cryan, R. Forbes, K. Hegazy, M. C. Hoffmann, F. Ji, M.-F. Lin, D. Luo, S. K. Saha, X. Shen, X. J. Wang, T. J. Martínez, T. J. A. Wolf

Department of Physics and Astronomy: Faculty Publications

Electrocyclic reactions are characterized by the concerted formation and cleavage of both σ and π bonds through a cyclic structure. This structure is known as a pericyclic transition state for thermal reactions and a pericyclic minimum in the excited state for photochemical reactions. However, the structure of the pericyclic geometry has yet to be observed experimentally.We use a combination of ultrafast electron diffraction and excited state wavepacket simulations to image structural dynamics through the pericyclic minimum of a photochemical electrocyclic ring-opening reaction in the molecule α-terpinene. The structural motion into the pericyclic minimum is dominated by rehybridization of two carbon …

Board Game Club, Emma Georgia, Katelyn Stewart

Honors Program: Expanded Learning Clubs

No abstract provided.

Measuring Diversity, Equity, And Inclusion, Quality Improvement Center For Workforce Development

Workforce Analytics Resources

What is Diversity?

Diversity refers to the degree of differences in the composition of the workforce in terms of such constructs as race, ethnicity, gender, gender identity and expression, sexual orientation, religion, disability, age, national origin, language, or other social identities. Though there are certainly other types of employee differences worth assessing (e.g., acquired diversity characteristics, such as education, skills, personality, preferences, attitudes), the focus here is on inherent social identities, especially those that are related to differences in representation, power, and privilege. Note that diversity is a characteristic of a group, not an individual.

How is Diversity Measured?

To …

A Standard Protocol To Report Discrete Stage-Structured Demographic Information, Samuel J. L. Gascoigne, Simon Rolph, Daisy Sankey, Nagalakshmi Nidadavolu, Adrian S. Stell Pičman, Christina M. Hernández, Matthew E. R. Philpott, Aiyla Salam, Connor Bernard, Erola Fenollosa, Young Jun Lee, Jessica Mclean, Shathuki Hetti Achchige Perera, Oliver G. Spacey, Maja Kajin, Anna C. Vinton, C. Ruth Archer, Jean H. Burns, Danielle L. Buss, Hal Caswell, Judy P. Che-Castaldo, Dylan Z. Childs, Pol Capdevila, Aldo Compagnoni, Elizabeth Crone, Thomas H. G. Ezard, Dave Hodgson, Tiffany M. Knight, Owen R. Jones, Eelke Jongejans, Jenni Mcdonald, Brigitte Tenhumberg, Chelsea C. Thomas, Andrew J. Tyre, Satu Ramula, Iain Stott, Raymond L. Tremblay, Phil Wilson, James James Vaupel, Roberto Salguero-Gómez

School of Biological Sciences: Faculty Publications

1. Stage-based demographic methods, such as matrix population models (MPMs), are powerful tools used to address a broad range of fundamental questions in ecology, evolutionary biology and conservation science. Accordingly, MPMs now exist for over 3000 species worldwide. These data are being digitised as an ongoing process and periodically released into two large open-access online repositories: the COMPADRE Plant Matrix Database and the COMADRE Animal Matrix Database. During the last decade, data archiving and curation of COMPADRE and COMADRE, and subsequent comparative research, have revealed pronounced variation in how MPMs are parameterized and reported.

2. Here, we summarise current issues related to …

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Transgender And Gender Diverse Clients’ Experiences In Therapy: Responses To Sociopolitical Events And Helpful And Unhelpful Experiences, Jae A. Puckett, Devon Kimball, W. Kalei Glozier, Megan Wertz, Terra Dunn, Brenna R. Lash, Allura L. Ralston, Natalie R. Holt, T. Zachary Huit, Sage Volk, Debra A. Hope, Richard Mocarski, L. Zachary Dubois

Department of Psychology: Faculty Publications

We examined transgender and gender-diverse (TGD) people’s reports of their therapy experiences over the course of a year. We explored how participants’ therapists integrated discussions about current events, as well as their more general perspectives on helpful and unhelpful experiences. A total of 107 participants provided data on these questions at least once over 12 months of surveys (M age = 33.79; 70.1% White), reflecting on their current therapy experiences. Through thematic analysis of qualitative data, the following themes were constructed regarding discussing sociopolitical events: (a) facilitating coping via bearing witness to clients’ internal experiences and implementing other therapeutic …

High-Throughput Phenotyping Of Plant Leaf Morphological, Physiological, And Biochemical Traits On Multiple Scales Using Optical Sensing, Huichun Zhang, Lu Wang, Xiuliang Jin, Liming Bian, Yufeng Ge

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Acquisition of plant phenotypic information facilitates plant breeding, sheds light on gene action, and can be applied to optimize the quality of agricultural and forestry products. Because leaves often show the fastest responses to external environmental stimuli, leaf phenotypic traits are indicators of plant growth, health, and stress levels. Combination of new imaging sensors, image processing, and data analytics permits measurement over the full life span of plants at high temporal resolution and at several organizational levels from organs to individual plants to field populations of plants. We review the optical sensors and associated data analytics used for measuring morphological, …

Stump Grinder Project, Wyatt Hopper

Honors Program: Senior Projects (Public)

This project covers the analysis of a Portable Stump Grinder device sponsored by private investors known as Gary and Carol Sherman, two farmers out of Lincoln, Nebraska. The ultimate goal of this project, in terms of the work we were assigned, was to provide the foundation work for future engineering teams to design and build the stump grinder for Gary and Carol Sherman.

Illustration Misbehavior, Dana Mcintyre

Masters in Architecture Program: Theses

This thesis attends to normative and repressive problems within representation to show disobedience through the exploration of misbehaving illustration. This project is designed as a collection of three chapters. Each highlights and challenges specific themes relevant to the chosen three architects, Bernard Tschumi, Francis Ching, and Graphic Standards, and the behavior of their representation. The goal is to contest these male voices by replacing them with female perspectives that misbehave. The exploration of narrative and illustration emphasizes the harm that mundane representation creates. By co-opting their modes and methods in misbehaving ways, these stories call into focus the way that …

Toward An Effective Approach For On‑Farm Experimentation: Lessons Learned From A Case Study Of Fertilizer Application Optimization In Japan, Takashi S.T. Tanaka, Taro Mieno, Ryoya Tanabe, Tsutomu Matsui, David S. Bullock

Department of Agricultural Economics: Faculty Publications

On-farm experimentation (OFE) is increasing worldwide. Appropriate OFE procedures may differ depending on the characteristics and circumstances surrounding farms, such as climate, field conditions, farm size, degree of agricultural digitalization, and a farmer’s socioeconomic background. This study aims to guide the future development of OFE in Japanese grain farming by examining the experimental setup, data analysis, and farmers’ activities within their socioeconomic and institutional communication and learning networks. The results of this typical OFE case study, which estimates a field’s economicallyoptimal fertilizer variable-rate application map for winter wheat production, are reported. The outcomes of the case study, which are intended …

Prostaglandin F2Α Regulates Mitochondrial Dynamics And Mitophagy In The Bovine Corpus Luteum, Michele R. Plewes, Emilia Przygrodzka, Corrine F. Monaco, Alexandria P. Snider, Jessica Jessica Keane, Patrick D. Burns, Jennifer R. Wood, Andrea S. Cupp, John S. Davis

Department of Animal Science: Faculty Publications

Prostaglandins are arachidonic acid-derived lipid mediators involved in numerous physiological and pathological processes. PGF2α analogues are therapeutically used for regulating mammalian reproductive cycles and blood pressure, inducing term labor, and treating ocular disorders. PGF2α exerts effects via activation of calcium and PKC signaling, however, little is known about the cellular events imposed by PGF2α signaling. Here, we explored the early effects of PGF2α on mitochondrial dynamics and mitophagy in the bovine corpus luteum employing relevant and well characterized in vivo and in vitro approaches. We identified PKC/ERK and AMPK as critical protein kinases essential for activation of mitochondrial fission proteins, …

Leveraging Participatory Design To Regenerate Neighborhood Spaces: Rebuilding Community Infrastructure, Jeremiah Brown

Masters in Architecture Program: Theses

No abstract provided.

Disrupting Routine: The Expansion Of Precedent, Olena Yarmolyuk, Olena Yarmolyuk

Masters in Architecture Program: Theses

Iconic architecture has presented a preferential nature to the establishment of architectural work. Academically, only the architectural a-side is presented to students. It is used as a means to develop, measure, and identify good work. Meanwhile, the architectural B-side is deliberately hidden away and censored by the profession. It exploits the perverse - displaying all of architecture’s failures, glitches, and anomalies.1 However, the notion of the a and b sides also presents problematic consequences. Prescribing architecture as either a or b side is problematic - it creates a divide between iconic architecture and all the other works deemed ‘insignificant’. Even …

Columbus, Nebraska: Southern Housing Development Design Proposal, Ryan Weyers, Caiden Dynek, Alex Papa, Brexton Robertson, Kaden Perala

Honors Program: Senior Projects (Public)

The following paper proposes the design and creation of a new housing development in the city of Columbus, Nebraska in a lot to the south of the city and directly north of the Columbus wastewater treatment plant. The goal of this proposal is to provide readers with confidence that our company is the most qualified to complete the project and will create the safest, most comfortable, most efficient, and most cost-effective final design. This proposal seeks to offer a solution to the lack of affordable housing for the growing workforce in Columbus. In order to arrive at this solution, each …

Game Design: Competitive Mobile Games, Kalen Wallin

Honors Program: Senior Projects (Public)

This thesis explores the design process for a competitive multiplayer game mode in “baldorf,” a ball-throwing mobile game developed by Mystic Rhoads Productions. The research aims to enhance the overall gaming experience by introducing a competitive mode that challenges players’ skills and facilitates interaction with others. The research methodology included reviewing the popular competitive mobile games: Marvel Snap, Clash Royale, and Clash of Clans, which boast high download numbers and chart rankings. This analysis helped identify key features and mechanics that contribute to an engaging multiplayer experience. As a result, several designs were proposed, covering the profile, matchmaking, match, and …

Meta-Analysis Of Driving Behavior Studies And Assessment Of Factors Using Structural Equation Modeling, Duong Ngoc Hai, Chu Cong Minh, Nathan Huynh

Department of Civil and Environmental Engineering: Faculty Publications

The aim of this paper is to understand the factors that influence unsafe driving practices by examining published studies that utilized the Theory of Planned Behavior (TPB) to predict driving behavior. To this end, it reviews 42 studies published up to the end of 2021 to evaluate the predictive utility of TPB by employing a meta-analysis and structural equation model. The results indicate that these studies sought to predict 20 distinct driving behaviors (e.g., drink-driving, use of cellphone while driving, aggressive driving) using the original TPB constructs and 43 additional variables. The TPB model with the three original constructs is …

Leadership And Project Management In Engineering: Baja Tube Bender, Maysyn Tm Sorensen

Honors Program: Senior Projects (Public)

Typical coursework for Undergraduate Mechanical Engineering students does not deeply focus on project management and leadership. Detailed in the following documentation is review of my Mechanical Engineering Senior Design capstone project as well as analysis of final presentations of other capstone projects. The Senior Design capstone projects spanned both semesters of the ‘22-’23 academic school year. After the first semester of my project I produced a post-mortem report to analyze the project’s progress and suggest improvements for the project, design, and team interaction. These improvements were compiled into an action plan and implemented in the spring semester. When the project …

Dynamic Resource Optimization For Energy-Efficient 6g-Iot Ecosystems, James Adu Ansere, Mohsin Kamal, Izaz Ahmad Khan, Muhammad Naveed Aman

School of Computing: Faculty Publications

The problem of energy optimization for Internet of Things (IoT) devices is crucial for two reasons. Firstly, IoT devices powered by renewable energy sources have limited energy resources. Secondly, the aggregate energy requirement for these small and low-powered devices is translated into significant energy consumption. Existing works show that a significant portion of an IoT device’s energy is consumed by the radio sub-system. With the emerging sixth generation (6G), energy efficiency is a major design criterion for significantly increasing the IoT network’s performance. To solve this issue, this paper focuses on maximizing the energy efficiency of the radio sub-system. In …

Design Of University Small-Scale Dairy Processing Facility, Philip J. Hildebrand, Joshua Arejola, Alicia Andersen, Terry Howell Jr, Tami M. Brown-Brandl

Department of Agricultural and Biological Systems Engineering: Faculty Publications

This project was assigned to research the feasibility and value of implementing a dairy processing facility on the campus of the University of Nebraska-Lincoln. The facility would process milk produced from cows under the same roof and will serve as an educational experience for Nebraska dairy farmers, UNL students, and K-12 students in the Lincoln-Lancaster County area. If the project is successful and replicated across the state, this facility could have a significant impact on the reduction of milk transportation costs in the Nebraska dairy industry.

The project began with researching milk processing methods and steps from production to consumption. …

Increasing Racial Diversity In The North American Plant Phenotyping Network Through Conference Participation Support, David Lebauer, Alexander Bucksch, Jennifer Clarke, Jesse Potts, Sonali Roy

Department of Statistics: Faculty Publications

A key goal of the North American Plant Phenotyping Network (NAPPN) annual conference is to cultivate a new generation of scientists from diverse backgrounds. As part of their effort to diversify the plant phenomics research community, NAPPN acquired funding to cover all attendance costs for participants from historically black colleges and universities (HBCU) for the 2022 annual meeting. Seven award recipients represented the first attendees from HBCUs in the conference’s 6-year history. In this commentary, we report on the impact of the conference awards, including lessons learned, and the future of the award.

North Central Extension Risk Management Education Center Helps Producers Manage Risks, Christine Lockert, Sheila Aikanathan Johnson, Bradley D. Lubben

Cornhusker Economics

The Extension Risk Management Education (ERME) program, funded by USDA's National Institute of Food and Agriculture, provides training to help producers learn new strategies to manage complex and growing agricultural risks. ERME strives to achieve this goal by encouraging and funding innovative programs across the country and helping programs focus on tangible results. Four regional grant-making ERME Centers are located across the country at the University of Delaware (Northeast), the University of Arkansas (South), Washington State University (West) and the University of Nebraska-Lincoln (North Central) along with a Digital Center at the University of Minnesota to help administer online application, …

John Glover: A Long Overdue Account Of His Productive Scholarship Methods, Kenneth A. Kiewra, Douglas Kauffman

Department of Educational Psychology: Faculty Publications

How are some scholars so productive? Kiewra and colleagues have interviewed about two dozen productive scholars over six studies to find out (Flanigan et al., 2018; Kiewra & Creswell, 2000; Kiewra et al., 2021; Kiewra et al., 2023; Patterson-Hazley & Kiewra, 2013; Prinz et al., 2020). Meanwhile, Bembenutty has also interviewed about 30 contemporary scholars to uncover their productivity pathways (Bembenutty, 2015, 2022). Absent from these interviews, though, is John Glover, the founding editor of Educational Psychology Review and one of the leading scholars of his time. Unfortunately, Glover’s time was brief. He died from a fallen tree in 1989 …

Mythic Quest: An Analysis Of The Representation Of Women In The Gaming Industry, Mitchell Lohmeier

Honors Program: Senior Projects (Public)

This thesis covers the history of the Gamergate movement, its impact on women working in the video game industry, and how the television show Mythic Quest portrays both through its representation of game developer companies. By taking information and content from episodes in Mythic Quest, to diving deep on research about Gamergate and the history of the gaming industry in the last decade, I found that Mythic Quest effectively depicted the gaming industry and its representation of women. While Mythic Quest explores issues with misogyny in the gaming universe, the show also raised awareness and promoted solutions to solve gender …

Halide Exchange And Transport In Halide Perovskite Lattices, Temban Acha Billy

Department of Chemistry: Dissertations, Theses, and Student Research

In recent years, metal-halide perovskites (MHPs) have risen quickly to prominence as promising materials across a variety of fields, from photovoltaics to optoelectronics in general. We show here a facile solution growth for creating a variety of mixed halide MAPbBr_3-xI_x crystals, which we will use to study halide exchange and transport in halide perovskites. We generated a calibration curve between the optical response and chemical composition in mixed Br/I MHPs at room temperature. All mixed Br/I MHP crystals were subjected to measurements of photoluminescence (PL) and Raman spectroscopy. A subset of mixed-halide MHP crystals exhibited multiple emission …

Airbnb Strategic Audit Overview, Andrea Curnes, Audrey Kreun, Tyler Royal, Jacob Zadalis, Cody Hohn, Jason Dirks

Honors Program: Senior Projects (Public)

This study provides an overview of Airbnb, an online marketplace for short-term rentals and experiences. It highlights the company's history, business strategies, value chain, acquisitions, code of ethical conduct, and organizational structure. With a Blue Ocean strategy combining differentiation and cost leadership, Airbnb has achieved remarkable success, boasting a valuation of over $67B and generating annual revenue exceeding $1.5B. The company's unique business model involves participating in all parts of the value chain, and it has expanded geographically through acquisitions and product market expansion. Airbnb's code of ethics reflects its core values, and its organizational structure fosters flexibility and remote …

A Generalization Of The Chomsky-Halle Phonetic Representation Using Real Numbers For Robust Speech Recognition In Noisy Environments, Peter Z. Revesz

School of Computing: Faculty Publications

Speech recognition is difficult when the speech signal is weak or occurs in a noisy environment. This paper presents an efficient and robust method that can reconstruct the standard pronunciation of English phonemes and words given a weak or noisy signal. The reconstruction is based on a novel representation of the reconstruction task as a problem of data retrieval from a database in two different cases: (1) when the phonemes are represented in the database as binary tuples and the input is also a binary tuple from which deletion errors occur, and (2) when the phonemes are represented in the …

Spontaneous Allelic Variant In Deafness–Blindness Gene Ush1g Resulting In An Expanded Phenotype, Vladimir Vartanian, Jocelyn F. Krey, Paroma Chatterjee, Allison Curtis, Makayla Six, Sean P. M. Rice, Sherri M. Jones, Harini Sampath, Charles N. Allen, Renee C. Ryals, R. Stephen Lloyd, Peter G. Barr-Gillespie

Department of Special Education and Communication Disorders: Faculty Publications

Relationships between novel phenotypic behaviors and specific genetic alterations are often discovered using target-specific, directed mutagenesis or phenotypic selection following chemical mutagenesis. An alternative approach is to exploit deficiencies in DNA repair pathways that maintain genetic integrity in response to spontaneously induced damage. Mice deficient in the DNA glycosylase NEIL1 show elevated spontaneous mutations, which arise from translesion DNA synthesis past oxidatively induced base damage. Several litters of Neil1 knockout mice included animals that were distinguished by their backwards-walking behavior in open-field environments, while maintaining frantic forward movements in their home cage environment. Other phenotypic manifestations included swim test failures, …

Midweed: A Comparison Between Marijuana Laws, Regulations, And Social Attitudes In Cannabis-Legal Vs. Cannabis-Illegal Midwest States, Abagail Lim

College of Journalism and Mass Communications: Professional Projects

This professional project is a series of three journalistic articles. Each article focuses on laws, regulations and social attitudes surrounding marijuana in the United States. These topics are explored primarily through the lenses of two Midwest states (Illinois & Nebraska), which have highly contrasting laws and regulations regarding marijuana. The state of Illinois legalized medical marijuana in January 2014 and recreational marijuana in January 2020, while in Nebraska, both medical and recreational use still remains illegal, though possession of up to one ounce has been decriminalized.

The purpose of choosing these two states is to show how stark a contrast …

Spit Brimming With Futures, Penny Molesso

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

SPIT BRIMMING WITH FUTURES is an immersive video and audio installation that uses ASMR (Autonomous Sensory Meridian Response) to investigate the intersection of transgender and neurodivergent identity, expressing an urgent need to imagine stories about transgender, autistic people that affirm our agency and autonomy amidst a political climate that weaponizes neurodivergence to delegitimize trans experiences. The American political right’s vilification of transgender people is used to uphold structures of white supremacy and heteropatriarchy that become destabilized when rigid binary gender categories are challenged. The political right has a vested interest in keeping trans people out of public view, thus weaponizing …