Digital Commons Network^™

Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws

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

Marginal cropland is suboptimal due to historically low and variable productivity and limiting biophysical characteristics. To support future agricultural management and policy decisions in Nebraska, U.S.A, it is important to understand where cropland is marginal for its two most economically important crops: corn (Zea mays) and soybean (Glycine max). As corn and soybean are frequently planted in a crop rotation, it is important to consider if there is a relationship with cropland marginality. Based on the current literature, there exists a need for a flexible yet robust methodology for identifying marginal land at different scales, which …

A Strategic Audit Of Seaworld, Rachel Jendro

Honors Program: Senior Projects (Public)

This project is a strategic audit for SeaWorld Entertainment. The purpose of this report is to analyze the firm through multiple different perspectives and analyze the competitive advantage the business is pursuing. The project considers internal and external environments, strategic leadership, organizational structure, and resources to determine if and what type of competitive advantage the firm holds. Furthermore, it considers current events and strategic decisions, and how those relate to the overall strategy. A strategic audit is crucial to understanding the innerworkings of a firm. The factors that were analyzed are interconnected and performing a strategic audit can allow for …

Nelnet: Potential Entrance Into An Emerging Market Nelnet: Potential Entrance Into An Emerging Market, Gage Randall, Landon Kennedy, Marcus Kennedy, Alex Botkin, Ben Samway

Honors Program: Senior Projects (Public)

Nelnet, Inc. (Nelnet) approached the Nebraska Business Honors Academy seeking assistance researching a potential new business venture. Our group explored opportunities in the market Nelnet is considering entering, examined various types of innovation, and engaged in the creative design thinking process. To form the basis of our recommendation, we met with professionals in the related industry, Nelnet employees, and faculty at the University of Nebraska-Lincoln. Our final task involved recording a presentation on our recommendation to Nelnet concerning this new business opportunity, accompanied by a final report summarizing our proposal. Through this project, we learned how to develop innovative ideas …

Estimating System And Traveler Costs Due To Lane Closures During Construction And Maintenance Operations, Ernest Tufuor, Li Zhao, Mm Haque, Laurence Rilett Ph.D., John Anderson, Eric Thompson

Nebraska Department of Transportation: Research Reports

Lane closures are used to facilitate activities related to road construction and maintenance or operations. However, there are economic costs associated with lane closures and these may accrue to both the traveling public as well as to traffic agencies. The Nebraska Governor’s office has identified maximizing the effectiveness of lane closures as a priority for the Nebraska Department of Transportation (NDOT). The goal of this project is to assist NDOT in effectively managing the operations of work zones to maximize the effectiveness of lane closures under Nebraska conditions. This report summarizes the findings of the current state of the practice …

Estimating System And Traveler Costs Due To Lane Closures During Construction And Maintenance Operations, Ernest Tufuor, Lianlin Zhao, Mm Shakiul Haque, Laurence Rilett, John Anderson, Eric Thompson

Nebraska Department of Transportation: Research Reports

Lane closures are used to facilitate activities related to road construction and maintenance or operations. However, there are economic costs associated with lane closures and these may accrue to both the traveling public as well as to traffic agencies. The Nebraska Governor’s office has identified maximizing the effectiveness of lane closures as a priority for the Nebraska Department of Transportation (NDOT). The goal of this project is to assist NDOT in effectively managing the operations of work zones to maximize the effectiveness of lane closures under Nebraska conditions. This report summarizes the findings of the current state of the practice …

Intelligibility Of Medically Related Sentences In Quiet, Speech-Shaped Noise, And Hospital Noise, Tessa Bent, Melissa Baese-Berk, Erica E. Ryherd, Sidney Perry

Durham School of Architectural Engineering and Construction: Faculty Publications

Noise in healthcare settings, such as hospitals, often exceeds levels recommended by health organizations. Although researchers and medical professionals have raised concerns about the effect of these noise levels on spoken communication, objective measures of behavioral intelligibility in hospital noise are lacking. Further, no studies of intelligibility in hospital noise used medically relevant terminology, which may differentially impact intelligibility compared to standard terminology in speech perception research and is essential for ensuring ecological validity. Here, intelligibility was measured using online testing for 69 young adult listeners in three listening conditions (i.e., quiet, speech-shaped noise, and hospital noise: 23 listeners per …

Reconceptualizing Conservation, S. J. Cooke, Sarah Michaels, E. A. Nyboer, L. Schiller, D. B. R. Littlechild, D. E. L. Hanna, C. D. Robichaud, A. Murdoch, D. Roche, P. Soroye, J. C. Vermaire, V. M. Nguyen, University Of Ottawa,, J. F. Provencher, P. A. Smith, G. W. Mitchell, S. Avery-Gomm, C. M. Davy, R. T. Buxton, T. Rytwinski, L. Fahrig, J. R. Bennett, G. Auld

Department of Political Science: Faculty Publications

Early definitions of conservation focused largely on the end goals of protection or restoration of nature, and the various disciplinary domains that contribute to these ends. Conservation science and practice has evolved beyond being focused on just issues of scarcity and biodiversity decline. To better recognize the inherent links between human behaviour and conservation, “success” in conservation is now being defined in terms that include human rights and needs. We also know that who engages in conservation, and how, dictates the likelihood that conservation science will be embraced and applied to yield conservation gains. Here we present ideas for reconceptualizing …

Targeting Inflammation In Heat-Stressed Wethers Improves Growth And Efficiency And Alters Body Composition: A Brief Exploration And Application Of Extension Principles, Micah Samuel Most

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

The objective of our first study was to determine how administering anti-inflammatory dexamethasone and ω-3 polyunsaturated fatty acid (PUFA)-rich fish oil affects growth efficiency and body composition in heat-stressed finishing lambs. Commercial wethers were randomly assigned to be fed under heat stress (35-40 ℃) or thermoneutral (19 ℃, n = 10) conditions for 30 d, and controls were pair-fed to eliminate differential feed intake. Heat-stressed wethers were randomly assigned to receive clinical-dose dexamethasone IM injections every 72 h, twice daily fish oil capsule oral boluses, or placebos. Heat stress decreased (P < 0.05) growth and efficiency, but dexamethasone and fish oil supplementation recovered these performance measures. Heat stress also decreased (P < 0.05) predictive body composition metrics that were at least partially improved by administration of dexamethasone and fish oil. Proximate analyses of muscles showed that heat stress decreased (P < 0.05) percentage of protein and increased (P < 0.05) percentage of intramuscular fat, neither of which was improved by dexamethasone or fish oil. Immunohistochemistry revealed that heat stress decreased (P < 0.05) myoblast differentiation and muscle fiber size, but anti-inflammatory supplementation recovered differentiation only. Plasma IGF-1 concentrations were not different among groups throughout the study. These findings demonstrate how heat stress-induced inflammation contributes to impaired growth, efficiency, and body composition observed in heat-stressed feeder lambs. However, targeting inflammation with dexamethasone or fish oil recovers many of these deficits.

The Cooperative …

Egypt’S Pediatric Oncology Hospital 57357: A Case Study Analysis, Ashley A. Clegg

Honors Program: Senior Projects (Public)

Hospital 57357 is the foremost pediatric oncology hospital in Egypt and provides treatment free of charge to children with cancer. Since its establishment in 2007, the hospital has grown to a capacity of 380 patient beds across three locations. Its quest for continuous improvement led to the development of a new performance management system emphasizing the tracking and measurement of a multitude of Key Performance Indicators across all departments. While this new system enables objective and perpetual monitoring of key patient care metrics, its integration into the existing structure introduces challenges that must be addressed. To analyze the external environment …

135th Street Branch: Librarianship And The Passing Fictions Of Regina Anderson Andrews And Nella Larsen, Caitlin Matheis

Department of English: Dissertations, Theses, and Student Research

In this thesis, I examine how two writer-librarians that worked in the 135^th Street Branch of the New York Public Library in the 1920's, Regina Anderson Andrews and Nella Larsen, grappled in their fiction writing with questions of classification, information, and knowledge that encompassed their daily work in the library. I begin by contextualizing the branch within the Harlem Renaissance and Arturo A. Schomburg's call for the preservation of Black history and literature at a time when the field of librarianship was being professionalized by implementing library schools and classification standards. I then provide readings of Andrews's one-act play …

Me Tengo Que Ir, Eddy Leonel Aldana

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

In Spanish, me tengo que ir means “I have to go.” “I have to go” as in go home, or back to one’s home country. As in leaving home for the unforeseeable future, hang up the phone, or pass away. me tengo que ir is also the name of a song by Adolescent’s Orquesta — a song about love, loss, and heartbreak over time that was always played at family parties when I was growing up.

In me tengo que ir, I use world history and personal memory to examine my family’s place within the Guatemalan diaspora. Diaspora is …

Reintroduction Of The Grey Wolf, Cody Willers

Department of Environmental Studies: Undergraduate Student Theses

A comprehensive literature review of the topic of the reintroduction of the grey wolf (Canis lupus) into the lower 48 states has been conducted to determine the viability of the grey wolf as a method for managing the overgrowth of medium to large ungulate populations. Due to the overgrowth of medium to large ungulate populations without the presence of the grey wolf, detrimental environmental impacts were being seen on many ecosystems such as Yellowstone in North America. Through predation and the fear of predation, the presence of the grey wolf in these ecosystems can provide a solution to the negative …

Reexamining The Desert: A Study Of Place-Based Food Insecurity, Morgan Ryan

Department of Geography: Dissertations, Theses, and Student Research

Food deserts are areas where individuals lack access to healthy and affordable food. Since 1995, the United States Department of Agriculture (USDA) has been one of the leading organizations studying the phenomenon of food deserts. However, issues relating to the scale of their analysis limit their ability to gain a nuanced understanding of food insecurity. In the past decade, an increased emphasis has been placed on the importance of local factors that contribute to food insecurity and complicate the large-scale study of the phenomenon. This research explores the various place-based factors shaping food insecurity in Lincoln, Nebraska, by readapting Penchansky …

Small Extracellular Vesicles In Milk Cross The Blood-Brain Barrier In Murine Cerebral Cortex Endothelial Cells And Promote Dendritic Complexity In The Hippocampus And Brain Function In C57bl/6j Mice, Fang Zhou, Pearl Ebea, Ezra Mutai, Haichuan Wang, Sonal Sukreet, Shya Navazesh, Haluk Dogan, Wenhao Li, Juan Cui, Peng Ji, Denise M.O. Ramirez, Janos Zempleni

Department of Nutrition and Health Sciences: Faculty Publications

Human milk contains large amounts of small extracellular vesicles (sEVs) and their microRNA cargos, whereas infant formulas contain only trace amounts of sEVs and microRNAs. We assessed the transport of sEVs across the blood-brain barrier (BBB) and sEV accumulation in distinct regions of the brain in brain endothelial cells and suckling mice. We further assessed sEV-dependent gene expression profiles and effects on the dendritic complexity of hippocampal granule cells and phenotypes of EV depletion in neonate, juvenile and adult mice. The transfer of sEVs across the BBB was assessed by using fluorophore-labeled bovine sEVs in brain endothelial bEnd.3 monolayers and …

Teaching Music Theory Through Covid-19, Donna Deloy

Glenn Korff School of Music: Dissertations, Theses, Student Creative Work, and Performances

This thesis surveyed music theory instructors throughout the United States. Throughout the interviews, instructors shared their insights during COVID-19 as a college instructor. This thesis seeks to describe and inform college instructors of the changes made to the undergraduate curriculum and classroom during the COVID-19 pandemic; as a result, instructors found and created new ways to engage students in a classroom through an online format. While creating an online music theory course is challenging, instructors share their experiences navigating this temporary shift beginning in March 2020. A suggestion of implementing more technology into the music theory core could create a …

Outdoor Play In Preschool Children: Parent Attitudes And Loose Part Play In Urban Settings, Ann Spilker

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

Outdoor play is an important aspect of young children’s health social-cognitive development. However, play in natural environments is declining due to urbanization and various safety concerns. Many urban preschools have outdoor play spaces that lack natural elements that stimulate children’s autonomy, creativity, and imaginative play. Furthermore, parents who find outdoor environments intimidating and fraught with danger limit young children’s outdoor experiences that inhibit their motor fitness, socialization with peers, and ecological awareness. Two qualitative case studies examined preschool children’s outdoor play. Study one focused on preschool children’s loose parts play in urban settings while study two examined parent’s attitudes towards …

Evaluating The Microbial Quality And Use Of Antimicrobials In Raw Pet Foods, Leslie Pearl Cancio

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

Raw meat-based diets (RMBDs) are emerging pet foods that pose food safety risks because of the potential presence of pathogens that could cause illness to humans. In this research, the microbial quality of select RMBD products sold by pet food companies online and the use of chemical antimicrobials to reduce the microbial load in chicken liver, a common RMBD ingredient, were evaluated.

Ground meat blends and livers from four animal species (beef, pork, chicken, turkey) were purchased from four online companies that delivers directly to consumers through parcel businesses. Products were procured at three different times during one year and …

Insular Interconnectivity In The Viking Age: A Geospatial View From Norse Jarlshof, Trent Michael Carney

Department of Anthropology: Theses and Student Research

During the Viking Age, settlements and trading centers were often located near lakes, seas, waterways, and sailing routes. As such, access to other locations was facilitated, whether for the purpose of settlement, trade, resource acquisition, or conflict, by some form of seafaring vessel or watercraft. Over the course of the Scandinavian Diaspora, a level of cultural and economic interconnectedness was maintained between mainland Scandinavia and the settlements in the North Atlantic region. This shared link with Scandinavia contributed to the development of local connections between insular and coastal sites within the broader diasporic network. This thesis considers the archaeological evidence …

Machine Learning-Based Device Type Classification For Iot Device Re- And Continuous Authentication, Kaustubh Gupta

School of Computing: Dissertations, Theses, and Student Research

Today, the use of Internet of Things (IoT) devices is higher than ever and it is growing rapidly. Many IoT devices are usually manufactured by home appliance manufacturers where security and privacy are not the foremost concern. When an IoT device is connected to a network, currently there does not exist a strict authentication method that verifies the identity of the device, allowing any rogue IoT device to authenticate to an access point. This thesis addresses the issue by introducing methods for continuous and re-authentication of static and dynamic IoT devices, respectively. We introduce mechanisms and protocols for authenticating a …

Effects Of Victimization And Community Characteristics On Health Outcomes, Katie Meyer

Department of Sociology: Dissertations, Theses, and Student Research

Drawing on the neighborhood disorder model, the environmental stress model, and general strain theory, this study examined the effects of victimization experiences, anticipated victimization, and perceived community characteristics on overall physical health and mental health outcomes. This study used cross-sectional survey data from the 2014-2015 Nebraska Annual Social Indicator Survey (NASIS). Linear regression was used to examine how victimization experiences, worry about victimization, community context, and perceptions of crime and policing were associated with the health outcomes, controlling for demographic characteristics. The findings show that more worry about crime, less positive community perceptions, and less perceived police protection were associated …

Curiosity, Motivation, Autonomy, And Lifelong Learning In Education And The United States Marine Corps, Cynthia Malmquist

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

Curiosity, intrinsic motivation, and autonomy-supportive teaching all promote lifelong learning in both the classroom and Marine Corps. Humans are all born with curiosity. Children inherently practice forms of intrinsic motivation. Most would agree that they do not like being micromanaged - they enjoy a sense of freedom when completing tasks. Despite this, many students learn in a controlling environment and many Marines work under controlling leaders. Though a large amount of time is spent on learning through the first 18 years of life, lifelong learning does not come naturally and is not commonly practiced. The research and ideas discussed below …

Starbucks Strategic Analysis, Jillian Jacoba

Honors Program: Senior Projects (Public)

Starbucks is a multinational chain of coffee shops and roasteries that was founded in 1971. Starbucks has continued to grow for the past 51 years and continues to dominate the coffee industry. This strategic analysis evaluates the general environment using a PESTEL analysis, the industry using Porter’s Five Forces, and the company’s overall strategy and competitive advantages. This paper will evaluate Starbucks’ position in the industry and the strategic choices that have led the company to its extraordinary success.

New Multimedia Resources For Ecological Resilience Education In Modern University Classrooms, Katharine F. E. Hogan, Julie A. Fowler, Conor D. Barnes, Alison K. Ludwig, Dominic J. Cristiano, Daniel Morales, Rubi Quiñones, Dirac L. Twidwell Jr, Jenny Dauer

School of Natural Resources: Faculty Publications

Solutions to global problems such as climate change and biodiversity loss require educational frameworks and accompanying teaching resources that are theory-based, interdisciplinary, and accessible to broad undergraduate and graduate student audiences. Ecological resilience theory (ERT) is a framework with established interdisciplinary application to complex global problems, but despite an emphasis on the utility of resilience in national higher education frameworks, we found that many current ecology textbooks incorporate multiple definitions and highly variable amounts of discussion on core resilience concepts. To facilitate the use of innovative teaching resources in ERT in universities, this paper describes four free multimedia tools and …

An Educational Framework For Equity And Inclusion In Planning, Jacob Schlange

Community and Regional Planning Program: Theses

As societal discourse about equity has increased, so has the need for planning practitioners to be educated about equity-related issues. This study examines the planning curricula of the 22 land-grant institutions accredited by the Planning Accreditation Board (PAB) to assess whether these programs align with the new emphasis on equity in the most recent PAB accreditation standards. Finding a notable lack of required courses explicitly addressing the topic among most of the programs surveyed, this thesis goes on to propose a framework for developing a course on equity in planning, using existing literature on planning education and guidance from the …

Embracing A Pedagogy Of Care In The Infant And Toddler Classroom, Paige D. Wernick

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

Care is a universal concept which connects us all as humans. Everyone comes into this world needing care and most of us will exit this world in need of care. Care is necessary throughout the span of our lives and should be considered a human right. Everyone is entitled to quality care, no matter their age or social status. The U.S. society has been entrenched in a decades long division between education and care which has historically prioritized education over care. This division has contributed to care being hidden and undervalued within the context of early childhood (EC) as a …

Neuromorphic Computing Using Electrostatic Mems Devices, Fadi Alsaleem

Durham School of Architectural Engineering and Construction: Faculty Publications

A continuous - time recurrent neural network ( CTRNN ) is described that exploits the nonlinear dynamics of micro electro - mechanical system ( MEMS ) devices to model a neuron in accordance with a neuron rate model that is the basis for dynamic field theory . Each MEMS device in the CTRNN is configured to simulate a neuron population by exploiting the characteristics of bi - stability and hysteresis inherent in certain MEMS device structures . In an embodiment , the MEMS device is a microbeam or cantilevered microbeam device that is excited with an alternating current ( AC …

Creating An Inclusive And Accessible Culture: Supportive Management For People With Disabilities, Sammy Peter, Katie Quirin Manwiller, Kiyomi D. Deards

University of Nebraska-Lincoln Libraries: Presentations

From the perspective of disabled academic librarians, covers the ways academic library managers can be inclusive and support disabled library workers.

Accompanies the article: Sally Lindsay and Kristina Fuentes. 2022. It is time to address ableism in academia: A systematic review of the experiences and impact of ableism among faculty and staff. Disabilities 2(2): 178-203. doi: 10.3390/disabilities2020014

Covid‑19 Vaccine Distribution: Exploring Strategic Alternatives For The Greater Good, Arben Asllani, Silvana Trimi

Department of Supply Chain Management and Analytics: Faculty Publications

The dire state of the COVID-19 pandemic crisis symbolized the urgency for efficient distribution and administration of vaccines to combat the virus as the most urgent public health service. This paper presents a prototype multi-criteria decision support model based on goal programming that can effectively support vaccination plans for the greater good of society. The optimization goals of the model include minimizing the number of fatalities and risk of spreading the disease, while complying with government health agency’s priority guidelines for vaccination. This study applied the model to a real-world dataset to demonstrate how it can be effectively applied as …

Characterizing And Predicting Human Visual Perception Of Unmanned Aerial Vehicle Gestures, Paul Fletcher

School of Computing: Dissertations, Theses, and Student Research

Unmanned Aerial Vehicles (UAVs) are being used in public domains and hazardous environments where effective communication strategies are critical. UAV gesture techniques have been shown to communicate meaning to human observers and may be ideal in contexts that require lightweight systems such as unmanned aerial flight, however, this work may be limited to an idealized range of viewer perspectives. As gesture is a visual communication technique it is necessary to consider how the perception of a robot gesture may suffer from obfuscation or self-occlusion from some viewpoints. This thesis presents the results of three online user-studies that examine participants’ ability …

Relational Trust In Group Coaching With First-Grade Teachers: A Single Case Study, Jentry Stoneman Barrett

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

Coaching has become a prominent professional development tool for helping early childhood teachers implement curriculum and research-based practices in their classrooms. One of the coaching strategies found to create positive changes in teacher practice and child outcomes is building trust between the coach and teacher(s). Despite what is known in terms of the benefits of these positive relationships, there is limited understanding of the nature of trust-building between coach and teachers, in general, and particularly in group coaching configurations. There is also scant literature exploring the nature of trust between teachers participating in group coaching sessions. Researchers call these two …