Digital Commons Network^™

Harnessing The Affordances Of Whatsapp For Online Learning, Ogbonnaya B. Akpa

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

The perennial problem of inadequate funding of public universities in Nigeria hinders their ability to implement online learning using conventional platforms and tools. Educators are compelled to explore alternatives for the cost-effective implementation of online learning. WhatsApp is a tool faculty and students at universities in Nigeria already use, which may be adopted for online learning implementation. This study used a mixed-methods approach to investigate the usefulness of WhatsApp for online learning as perceived by faculty members and students at a Nigerian public university.

Findings of the study revealed that both students and faculty members perceived WhatsApp as a highly …

Mujeres En Movimiento: La Posmigración En Obras Contemporáneas De Hijas De Inmigrantes En España Y Estados Unidos, Olatz Sanchez-Txabarri

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

This dissertation investigates contemporary works of daughters of immigrants in Spain and the United States. Through a postmigration approach, this study delves into the analysis of Ser mujer negra en España (2018), by Desirée Bela-Lobedde, Hija del camino (2019), by Lucía Mbomío, A Cup of Water Under My Bed (2014), by Daisy Hernández, Juliet Takes a Breath (2016), by Gabby Rivera, La hija extranjera (2015), by Najat El Hachmi, Hija de inmigrantes (2022), by Safia El Aaddam, and the documentaries Fruits of Labor (2021), by Emily Cohen Ibáñez and Vida diferida (Life, Deferred) (2017), by Brenda Ávila-Hanna. I …

Influence Of Biotic And Abiotic Factors On Decomposition And The Determination Of Time Since Death: Applications Of Forensic Entomology And Taphonomy, John Oladapo Obafunwa

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

The determination of the postmortem interval (PMI) is essential for the investigation and successful prosecution of suspected cases of homicide. While the forensic pathologist might be able to draw fairly accurate conclusions during the initial 24–36 hours, beyond this period, the assistance of other experts like forensic entomologists and taphonomists would be required. The present study was designed to observe the postmortem changes in Sus scrofa placed in a cage in Nebraska, located in the American Central Great Plains. The setting is in an open grassland in late spring to early summer. The observed variables with respect to biotic and …

Support, School Climate And Teacher Wellbeing In The Wake Of Covid-19: A National Study Using Ntsp Data, Annastashia M. Teepe

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

Research indicates a significant number of teachers planned to leave the profession following the COVID-19 pandemic, with national surveys in 2021 revealing about 25% considering departure. Stress, low pay, remote teaching demands, and lack of support contributed to attrition, impacting school climate, which influences productivity, collaboration, and job satisfaction, and is inversely related to turnover. The shift to remote learning also demanded new skills and exposed technological disparities. This quantitative study examined the pandemic's impact on teachers' perceptions of school climate, support, resources, job satisfaction, burnout, and intent to leave using the 2020–2021 National Teacher and Principal Survey. Factor analyses …

Chasqui, Nicole Lachat

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

Chasqui is a creative dissertation comprised of a thirteen-page critical introduction and a series of poems which consider varying forms of migration, including that of border crossings. The internalization of displacement through longing and alienation is examined in these poems. The author considers questions of inheritance through an exploration of personal, familial and sociopolitical bonds. Varying forms of violence, including colonial and gendered violence are reflected upon in the work.

Advisor: Kwame Dawes

Integrating Genomic And Phenomic Breeding Tools For Wheat Stem Sawfly Resistance In Hard Winter Wheat, Sydney E. Graham

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

The wheat stem sawfly (WSS; Cephus cinctus) is an insect pest that affects wheat (Triticum aestivum) in the Northern Great Plains. This pest causes stem cutting that makes the plants susceptible to lodging and results in up to 30% yield loss. The primary management strategy for producers is utilizing host plant resistance, for which the main trait is stem solidness. This trait increases the pith thickness and provides resistance to the WSS by increasing larval mortality and reducing stem cutting. While stem solidness is largely controlled by a known major gene (SSt1), the phenotypic expression is also …

Familismo And Family Achievement Guilt In Latine College Students: Relationships With Psychopathology And Wellbeing, Abril Rangel-Pacheco

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

The purpose of this dissertation was to examine the relations between familismo, family achievement guilt, subjective wellbeing, and anxious and depressive symptoms in a sample of Latine young adults enrolled in college in the United States. Familismo has previously been linked to educational success and psychological and behavioral health. On the other hand, family achievement guilt has been linked to low self-esteem and internalizing symptoms. However, it is unclear how these factors interact to impact the psychopathology (i.e., anxious and depression symptoms) and psychological wellbeing (i.e. subjective wellbeing) of Latine young adults in college. Data were collected from 83 Latine …

Mass Of Perpetual Indulgence, Michael Joseph Willette

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

Mass of Perpetual Indulgence for chamber orchestra, electronics, soprano solo, and drag performer was written to bridge the gap between queerness and spirituality, to sanctify queer people and celebrate queer lives and communities. Amalgamating musical styles ranging from disco to opera, art song to EDM, this appropriation of the traditional Mass blurs the lines between the sacred and the profane. This work features original text by librettist Caroliena Cabada that responds to the narrative of the Mass Ordinary from a distinctly queer perspective. Ultimately, this work celebrates the queer body as a holy body, queer community as a sacred communion, …

Spatial Ecology And Predator–Prey Interactions Of Mountain Lions In California's San Francisco North Bay, Jacob A. Harvey

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

Understanding spatial ecology and predator-prey interactions are central to wildlife ecology and conservation. We tracked mountain lions with GPS telemetry to evaluate space use, predator-prey interactions, and resource selection in California’s San Francisco North Bay, USA. In Chapter 1, we evaluated the influence of human disturbance on home range size, prey composition, and kill rates on black-tailed deer (Odocoileus hemionus columbianus) across an urban-rural gradient. Both males and females increased home range size with increasing development at low to moderate levels of development, but female home range size stabilized across greater proportions of development while male home range …

Maggot Mass Effect On The Development And Survival Of Forensic Blow Flies, Akomavo Fabrice Gbenonsi

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

Forensic entomology scientists use blow flies' developing patterns to estimate the postmortem interval (PMI). However, larval aggregations produce metabolic heat, resulting in complex microclimates that may change growth timetables. This study investigates how larval density and associated temperature changes affect the development and survival of two forensically essential blow fly species, Lucilia sericata and Calliphora vicina.

This study examined how larval density and associated thermal profiles affect the development of both blow fly species. Using a split-plot design, we tested four larval densities at 25°C and 30°C, with temperature gradients measured via thermocouple at four mass positions three times …

Assessing Spatial And Temporal Variation In Photoprotective Responses Of Deciduous And Evergreen Tree Canopies With Leaf Spectroscopy, Alexander Piper

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

Environmental conditions frequently prevent carbon fixation by plants, leading to the absorption of excess light that can damage photosynthetic machinery if not dissipated. To do so, plants utilize several photoprotective mechanisms, some detectable remotely using Photochemical Reflectance Index (PRI). Two components of PRI correspond to the facultative engagement of the xanthophyll cycle (ΔPRI) and constitutive changes in xanthophyll pigment pool sizes (PRI0), representing distinct mechanisms regulating shorter and longer-term photoprotection, respectively. Our understanding of interspecific and intraspecific variation in these mechanisms is limited, primarily because PRI components are often not clearly distinguished. This study aimed to assess the variation in …

Assessment Of Sampling Gears For Bigheaded Carp In Mid-Order Prairie Rivers In Nebraska, Brett M. Anderson

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

Silver Carp Hypophthalmichthys molitrix and Bighead Carp H. nobilis (collectively bigheaded carp) have invaded tributaries to the Missouri River and Platte River in Nebraska, USA. Information pertaining to efficient sampling protocols for assessing bigheaded carp populations as well as benefiting removal efforts is needed. Herding is a method used to increase the capture efficiency and detection probability of adult bigheaded carp by simultaneously using active and passive sampling gears. During June-July 2023, four herding techniques were assessed regarding their ability to elicit directional movement past an enclosure gate. The combination of sound and electrofishing resulted in the highest mean …

Culture And Context: How Frames Of Teaching And Of Learning Mathematics Form And Change For Graduate Student Instructors, Johan Benedict A. Cristobal

Department of Mathematics: Dissertations, Theses, and Student Research

Why do instructors teach the way that they do? This question is key in understanding how and why asset-based or deficit-based practices are enacted in the classroom. In consequence, this question also gives insight into how the environment where students learn is shaped. Mathematics education research, in particular, has been concerned with how instructors respond to students’ contributions in the classroom and how these ways of responding can (dis)empower students.

One way to answer this question is to understand how instructors frame their own teaching and their students’ learning. Frames are mental constructs which help individuals filter details, interpret information, …

Leveraging Historical Data For Estimating Genetic Gain And Implementing Genomic Selection In A Student Led Barley Breeding Program, Sydney Graham

Department of Statistics: Dissertations, Theses, and Student Research

In Nebraska, winter feed barley presents an emerging market for producers and an opportunity to diversify cropping systems. The University of Nebraska Barley Breeding Program aims to develop high-yielding, winter-hardy varieties. A unique aspect of this program is that doctoral students serve as barley breeders and are responsible for crossing, data collection, and advancement decisions. While this provides hands-on experience for the students, the impact of student leadership has not been examined.

This study used a historical data set to evaluate the realized genetic gain of the breeding program, and as a training population for genomic selection. The dataset consisted …

Sustainable Fashion Identified: An Exploration And Education Of Sustainable Apparel, Michaela M. Lentsch

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

Consumers today are searching for and are loyal to companies who support their views and concerns about sustainability. The fashion industry is one of the biggest industries in the world, but one that has many environmental and sustainability concerns. Fortunately, there are many ways the fashion industry and consumers can take steps to make sustainable change and better the planet. Small fashion businesses and boutiques can make positive changes to operate and provide sustainable options and services for customers which can help the planet become more sustainable.

Through this manuscript, an assortment of sustainable methods and practices will be shared …

Exploring The Nexus Of Adverse Childhood Experiences And Illicit Substance Misuse Among Midwestern Adults, Anika R. Eisenbraun

Department of Sociology: Dissertations, Theses, and Student Research

The positive association between illicit substance misuse and adverse childhood experiences (ACEs) has been widely examined in prior literature. Yet, there is limited understanding of the varying factors, such as social support, depressive symptoms, or sexual victimization, that may impact the relationship between substance misuse and ACEs. As such, the purpose of the current study is to examine the relationship between ACEs (i.e., physical and emotional abuse, sexual abuse, neglect) with illicit substance misuse and to investigate indirect pathways of social support, depressive symptoms, and sexual victimization. Private, secondary data from the second cohort of a larger, longitudinal rural health …

Household Wealth And Mental Health In Older Adults Across Racial Groups: Moderating Role Of Social Support, Sunkanmi Folorunsho

Department of Sociology: Dissertations, Theses, and Student Research

This thesis examines the relationship between household wealth and mental health outcomes among older adults, with particular attention to racial and ethnic differences and the potential moderating role of social support. Although financial resources are widely recognized as important determinants of psychological well-being, less is known about how social support interacts with economic conditions to shape mental health in later life. The study also addresses how these patterns may vary among different racial and ethnic groups, given persistent inequalities in wealth and disparities in access to social resources.

Drawing on data from the 2020 wave of the Health and Retirement …

Radar Precursors To Severe Weather Reports In Left-Moving Supercells, Eric A. Carothers

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

While much research has examined dual-polarimetric signatures of right-moving supercells, very little has been done with left-moving supercells. Given that left-moving supercells are thought to be disproportionate producers of large hail, understanding their internal dynamics is vitally important. This study examines differences and trends in the dual-polarimetric signatures of left-moving supercells to identify precursors to severe weather reports. A dataset of left-moving supercells associated with severe weather reports was created. These storms are processed with an automated analysis algorithm that identifies and quantifies the polarimetric signatures in each storm. A method for analysis of differences and trends in their dual-polarization …

Cares Act And Income Inequality In The Long Run, Kathleen Washington

Honors Program: Senior Projects (Public)

In this paper, I will be looking at how the Coronavirus Aid, Relief, and Economic Security (CARES) Act, a revolutionary public policy, led to income inequality decreasing during the Covid-19 pandemic in the US. Additionally, from the data available, the CARES Act seems to not have had any long run effects on income inequality in the US. Although, I would recommend more research on the CARES Act’s long-run effects when more data become available as time passes.

Biological Reduction Of Perchlorate In Martian Regolith Simulant Using Azospira Oryzae, Brianna Bernhardt

Honors Program: Senior Projects (Public)

Establishing a sustainable human presence on Mars will require in-situ resource utilization (ISRU) to reduce costly and inefficient resupply missions. Despite containing many of the requirements for agriculture, Martian regolith is contaminated with toxic levels of perchlorate (ClO₄^-), threatening human health and agricultural success. Biological remediation using perchlorate-reducing bacteria offers a promising approach to address these challenges. This study investigated the perchlorate-reducing ability of Azospira oryzae, a facultative anaerobe capable of converting ClO₄^- to chloride (Cl^-) through dissimilatory respiration. A. oryzae was cultured in Martian regolith simulant (MGS-1) amended with 0.0%, 0.5%, …

Effects Of Group Delay Dispersion In Silica Glass On Non-Gaussian Laser Pulses, Lars Pedersen

Honors Program: Senior Projects (Public)

We present an analysis of how the group delay dispersion in silica glass affects the envelope of non-Gaussian laser pulses. In particular, we examine femtosecond pulses in the ultraviolet regime with cosine squared and symmetric exponential envelope shapes. For both envelope shapes, our results show a linear or semi-linear dependence of both the maximum electric field strength and duration on the group delay dispersion when the pulse passes through the silica glass medium with a thickness between 1 μm and 10 μm. This computational analysis is done using a fast Fourier transform method.

Artists And Inspirations: A Look At The Past And My Present, Sofie A. Curto

Honors Program: Senior Projects (Public)

This paper examines eight artists who have served as inspiration and guidance in my own artistic growth over the past four years. With in depth examinations of each, I dive into their personal life, practices, and experiences. I then examine one of each of their works and reflect on how it pertains to my practice. There are two separate sections that reflect the expanding scope of my work. Each section concludes with an investigation of several of my pieces and my creation process. Finally, there is a description of my four submitted works completed in conjunction with this research.

Sodium And Potassium In Health And Cellular Function, Jordyn Branz

Honors Program: Senior Projects (Public)

Sodium (Na⁺) and potassium (K⁺) are essential electrolytes that regulate numerous physiological processes. These include cell function, nerve transmission, and muscle contraction. The Na+/K+-ATPase plays a critical role in maintaining the balance of these ions by actively transporting three sodium ions out of the cell and two potassium ions into the cell against their concentration gradients. This process is vital for maintaining the resting membrane potential and supporting the function of excitable cells. The Na+/K+-ATPase consists of two main subunits, with the alpha-subunit being primarily responsible for ion transport activity. Isoforms alpha1, alpha2, and alpha3 are tissue-specific and contribute to …

Eating Behavior Differences Across Dementia Diagnoses: The Roles Of Behavioral Symptoms And Anticipatory Physiological Responses, Charlie J. Lorkovic

Honors Program: Senior Projects (Public)

Objective: To determine how behavioral symptoms and impairment of the preparatory physiological response contribute to disordered eating behaviors in dementia, particularly frontotemporal dementia (FTD) and Alzheimer’s disease (AD).

Methods: This secondary analysis utilizes data from 242 patients (191 FTD, 51 AD) who took part in a collaborative study between the University of California, Berkeley, and the University of California, San Francisco. Preparatory physiological responses were measured as heart rate increases from a baseline to an instruction period, when participants were informed that they were about to watch an emotional film. Behavioral symptoms, including eating behaviors, were assessed using the Neuropsychiatric …

A Comprehensive Analysis Of Virtual Reality In Modern Healthcare Education, Adarsha Ganesan

Honors Program: Senior Projects (Public)

This thesis evaluates the effectiveness of virtual reality (VR) in healthcare education through multiple facets of evaluation: educational outcomes, accessibility considerations, and financial viability. Drawing from an extensive literature review on existing research and a case study of the University of Nebraska Medical Center (UNMC) College of Nursing's "Journey Through the Kidney" VR experience, this analysis examines how technology can transform modern medical education. While research shows mixed results regarding virtual reality’s impact on assessment outcomes, studies demonstrate increased student motivation and engagement, which can have lasting downstream effects on the quality of learning. Accessibility analysis reveals both opportunities and …

Morgan Stanley’S Competitive Strategy And Industry Environment: An External And Internal Analysis, Mikaela S. Waggoner

Honors Program: Senior Projects (Public)

Morgan Stanley is a global financial services firm that trades, manages, and distributes capital for a wide range of clients. Its competitive position is dependent on a number of factors including reputation, quality, and innovation, and the firm is subject to many internal and external factors that affect its competitive position. This work seeks to examine the factors that affect Morgan Stanley’s strategy and competitive position, looking at both historical factors and potential future outcomes. A PESTEL analysis as well as an analysis of Porter’s Five Forces in the financial industry are used to demonstrate the external factors that influence …

Advancing Mitochondrial Dna Visualization And Dynamics In Plants: Application Of The Mt-Hi-Ness Fluorescent Marker, Madeleine H. Faber

Honors Program: Senior Projects (Public)

Mitochondrial DNA (mtDNA) plays a crucial role in cellular energy production and inheritance, yet its dynamics and exchange remain poorly understood in plant systems due to limitations in visualization techniques. Traditional visualization methods such as exogenous DNA stains and fluorescent protein markers present challenges in specificity and live-cell imaging. To address this challenge, we adapted the MT-HI-NESS fluorescent marker, originally developed for mammalian cells, for use in plant mitochondrial studies. Using Arabidopsis thaliana as a model system, we employed mitochondrial targeting sequences (IVD and AOX) to ensure accurate localization and to confirm mtDNA binding specificity. The validation process included fluorescence-based …

Understanding Automation From A Computer Science Perspective, Matthew Donsig

Honors Program: Senior Projects (Public)

This thesis looks into automation and analyzes its benefits and problems. It begins with an explanation of a capstone project, automating the UNL State Museum’s reservation system. Problems of automation are presented in unsuccessful attempts and some pitfalls of automation. Next this thesis turns to an examination of artificial intelligence in automation. Along with that, we look at bias in automation and how people can bias automated tools or be biased by them. Turning successful examples of automation and then automation in manufacturing shows its benefits. Automation creates new jobs or changes work as much as it eliminates positions. At …

Befitting Bach: Prelude And Fugue Transcribed For Horn Quartet, Caitlin Murphy

Honors Program: Senior Projects (Public)

This thesis, titled “Befitting Bach: Prelude and Fugue Transcribed for Horn Quartet,” consists of horn quartet transcriptions of Prelude 1 and Fugue 1 from Johann Sebastian Bach’s The Well-Tempered Clavier, Book I. The prelude and fugue pair were originally written for harpsichord during the Baroque period, and the pieces remain commonly performed on keyboard instruments. The transcription translates the pieces into four-part horn music while preserving the original musical ideas and accounting for the different technical capabilities between the instruments. The accompanying written component provides a brief history of the original compositions. Further, the report delves into the transcription …

A Comparative Analysis Of Women’S Health In Latin America And The United States: Geographical Context And Preventative Actions, Holly J. Robinson

Honors Program: Senior Projects (Public)

Cervical cancer, breast cancer, sexually transmitted infections (STIs), pregnancy complications, and gender-based violence are dangers faced by women everywhere. However, the severity of these risks can increase significantly due to a country’s geography, government control, and level of development. This thesis expands upon information gained directly from on-site experiences with medical professionals and locals (including doctors, nurses, nutritionists, and patients) in Peru, Ecuador, and Costa Rica, and further research to look at Latin America as a whole, in relation to the United States. Both the US and Latin America exhibit problems with their healthcare systems. The United States is more …