Digital Commons Network^™

Intergenerational Transmission Of Health: Evidence From Indonesia, Fatima Khan

Theses and Dissertations

This study estimates the causal transmission of health from mothers to their children. Intergenerational associations in health and other human capital outcomes are well established, but those associations may not be causal due to common unobserved factors between a mother and her child. This study employs two-stage least squares, using weather variation as an instrument, to causally identify the relationship between maternal health and child health outcomes in five dimensions: height-for-age, self-reported health, blood pressure, lung capacity, and hemoglobin levels. The data are from the Indonesian Family Life Survey (1993--2014), a longitudinal survey that provides a 21-year look into the …

The Effect Of An Invasive Species (Lantana Camara) And A Fast-Growing Herb (Acanthus Pubescens) On The Plant And Animal Communities In Kibale National Park, Uganda, Kathleen Bufka

Theses and Dissertations

Fast-growing plant species, like Lantana camara and Acanthus pubescens, could threaten biodiversity in Kibale National Park, Uganda. I surveyed plants and wildlife in areas where these plants were frequently encountered compared to those areas where they are infrequent. I found mixed results based on plant traits and the animals considered. My findings support management efforts on these two species to prevent forest degradation.

Addressing The Supply Of Frozen Embryos In A Post-Dobbs America, Benjamin W. Akins, Vlad A. Bursuc

University of Florida Journal of Law & Public Policy

Over the past two decades, the supply of frozen embryos has exponentially increased in America. Today, estimates put the total amount of stored embryos at up to 1.5 million. In a post-Dobbs world, much uncertainty and anxiety exists as to what can and should be done with these embryos. In 2024, the panic became especially heightened when the Alabama Supreme Court ruled, in LePage v. The Center for Reproductive Medicine, P.C., that frozen embryos were eligible for the same protections as other minor children in civil wrongful death actions. This ruling, the first of its kind, opened the …

Application Of Machine Learning In Early Childhood Development Research: A Scoping Review, Faith Benson, Daisy Chelangat, Willie Brink, Patrick Mwangala, Akbar Waljee, Cheryl Moyer, Amina Abubakar

Institute for Human Development, East Africa

Background: Early childhood development (ECD) lays the foundation for lifelong health, academic success and social well-being, yet over 250 million children in low- and middle-income countries are at risk of not reaching their developmental potential. Traditional measures fail to fully capture the risks associated with a child’s development outcomes. Artificial intelligence techniques, particularly machine learning (ML), offer an innovative approach by analysing complex datasets to detect subtle developmental patterns.

Objective: To map the existing literature on the use of ML in ECD research, including its geographical distribution, to identify research gaps and inform future directions. The review focuses on …

Commodity Diversification, Technological Innovation, And Market Dynamics: Insights Into Beef Cattle Production And Feeder Cattle Basis In The United States, Nik Berg

All Theses

The beef cattle industry plays an important role in the agricultural economy, contributing to both domestic food supply and global trade. The United States is one of the world's largest producers of beef, with production systems varying widely across regions largely due to differences in available resources and market structures. Market conditions, technological advancements, and policy interventions shape the way producers operate, making research into these factors essential for both industry stakeholders and policymakers.

Producers are continuously adapting to changing economic conditions, environmental challenges, and evolving consumer preferences. By analyzing these factors, researchers can provide insights to support informed decision-making …

Evaluating (Bio)Degradation Of Carbon Tetrachloride In Fe(Iii)-Reducing Environments, Adam Rogers

All Theses

Understanding degradation of carbon tetrachloride in-situ is vital for many remediation projects across the world, yet conclusive evidence of its feasibility is lacking in previous studies.

The main objective of this research is to assess the potential for carbon tetrachloride attenuation by biological, abiotic, and combined processes in a Fe(III)-reducing aquifer. In doing so, it assesses the effect of pH and stoichiometric ratio on abiotic degradation of carbon tetrachloride using various reducing agents, evaluates iron-mediated versus direct biotic degradation of carbon tetrachloride using pure cultures under resting and growth conditions, and characterizes the effects of culture strain, electron acceptors and …

Unl Emeriti And Retirees Association Newsletter, August 2025

UNL Emeriti and Retirees Association: Newsletters and Other Materials

University of Nebraska-Lincoln Emeriti and Retirees Association Newsletter, August 2025

President's message: Continuing our commitment, Pam Edwards

Welcome to new members

Wake up your well-being

Book review, Atlas of the Heart

A look ahread at programming

Recapping past programming

Memory moments

Two Essays On Index-Based Risk Management In U.S. Rangeland And Livestock Production, Wajdi Belgacem

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

This dissertation investigates two distinct but complementary dimensions of risk management in United States rangeland agriculture. Essay 1 measures spatial variation in basis risk within the Pasture, Rangeland, and Forage (PRF) rainfall-index program for 176 Nebraska grid cells (1988–2023). By linking official NOAA rainfall indices with 30-m Rangeland Analysis Platform biomass estimates, we find rainfall–forage correlations that peak at 0.45 but display pronounced heterogeneity. The probability that neither insured interval triggers during an actual forage loss averages 12%, rising to nearly 30% in several Sandhills cells, whereas optimally pairing late-spring and summer intervals reduces complete misses below 10%. These results …

Redressing The Harm Of Accelerated Approval, Laura Karas

Articles

The accelerated approval pathway of the United States Food and Drug Administration (FDA) enables drugs to come to market more quickly than would be possible under a traditional FDA approval pathway. Accelerated approval is based upon the agency's determination that changes in a surrogate or intermediate clinical endpoint are "reasonably likely" to predict a clinical benefit meaningful for patients. In essence, the pathway affords sick patients earlier access to potentially beneficial drugs while trials to confirm clinical benefit continue. Accelerated approval has been likened to a social compromise in which promising drugs enter the market sooner in exchange for a …

Ai Governance In China: A Tale Of Three Digital Empires, Charles C. Wang, Siyi Lin, Xia Wu, Yiman Li

UC Law SF International Law Review

Since 2021, China has strategically expedited artificial intelligence (AI) legislation and refined algorithmic governance to compete with the US and the EU. The rapid growth of algorithm filing cases is a direct result of the “Made in China 2025” Initiative which prioritizes AI development driven by domestic leading tech companies like DeepSeek. As world-class digital powers, China, the US, and the EU diverge in their categorization of AI risks and adoption of regulatory measures. China’s centralized single-agency regulatory infrastructure differs from the multi-agency and decentralized governance models in the US and the EU, respectively. China does not impose the same …

The Lasting Impact Of Childhood Maltreatment On Parenting: A Qualitative Study, Leslie K. Moorman

Theses, Dissertations and Culminating Projects

This qualitative study explored how Child Protection Service (CPS)-involved parents made meaning of their parenting and what informed their meaning making. Bronfenbrenner’s Person Process Context Time (PPCT) framework was utilized to examine the context of parenting within the CPS system. The PPCT theoretical assumptions were used to discuss the results of the study. Semi-structured interviews were conducted with 10 participants, from diverse ethnic backgrounds. All but one returned for a second interview. The CPS-involved parents disclosed childhood experiences that were consistent with childhood maltreatment. The participants were preoccupied with stories of their own childhood and not wanting to parent like …

Assessing The Impact Of Pll And Ple Concentrations And Aging On Protein Condensates Formation Via Llps, Nabil Harche

Theses, Dissertations and Culminating Projects

Protein droplets, also referred to as condensates, are membrane-less organelles formed through a biophysical process known as liquid-liquid phase separation (LLPS). These structures play an indispensable role in a wide range of cellular functions, including compartmentalizing biochemical reactions, regulating gene expression, and responding to cellular stress. Unlike traditional membrane-bound organelles, these condensates form dynamically and reversibly within the cytoplasm or nucleus, without the need for lipid membranes. The formation of these protein droplets is affected by several physicochemical factors, including pH, temperature, ionic strength, concentration of biomolecules, and specific molecular interactions such as electrostatics and hydrophobic forces. LLPS results in …

Crustose Coralline Algae Accretion In A Kelp Forest Ecosystem In Southern New England, Usa, Ruimeng Liu

Theses, Dissertations and Culminating Projects

Temperate reef ecosystems are experiencing rapid canopy loss of kelp and the proliferation of algal turf. However, the consequences of these changes for crustose coralline algae (CCA)— a key but often overlooked benthic calcifier—are poorly understood. Here, I study CCA recruitment patterns in southern New England, USA, using standardized settlement tiles at two field sites over 12 months (September 2023 – August 2024). I measure CCA accretion rates and the associated biological and environmental correlates of CCA recruitment. At the two sites, CCA accretion rates ranged from 0.0259 to 1.215 mg CaCO3 cm⁻² yr⁻¹, with an average of 0.441 mg …

Electrophysiological Markers Of Emotion Dysregulation In Autistic Youth, Rachel G. Mcdonald

Theses, Dissertations and Culminating Projects

Emotion dysregulation (ED) is a transdiagnostic mechanism that is conceptualized as difficultly regulating emotions and deploying appropriate regulation strategies in response to environmental stimuli. Meta-analyses suggest that autistic people, across the lifespan, experience more severe ED as compared to both neurotypical people and those with mental health conditions. Despite elevated risk and evidence linking ED to disruptions in neural mechanisms, no studies to date have examined neural markers of ED in autistic populations. The current project uses multi-method and multi-informant measurement to examine similarities and differences in neural mechanisms of ED in autistic and non-autistic populations. Forty-four youth aged 11—17 …

Mind Mentor, The Workplace Mental Health Navigator: Evaluating The Utility Of A Self-Paced Web-Based Mental Health Awareness Training For Supervisors, Lauren Offermann

Theses, Dissertations and Culminating Projects

The growing prevalence of mental health challenges in the workplace – such as anxiety and depression, burnout, suicide, and substance abuse – has increased demand for evidence-based supervisor training programs that promote psychological well-being. This study evaluated the effectiveness of Mind Mentor: The Workplace Mental Health Navigator, a 1.5-hour, web-based, self-paced adaptation of the Mental Health Awareness Training (MHAT; Dimoff, 2016) for supervisors. The training aimed to enhance mental health knowledge, awareness, self-efficacy, and supportive behaviors among U.S.-based supervisors with at least one direct report. Using a pre/post/follow-up design (baseline N = 51, immediate post-test N = 35, and 4-week …

"It's A Calling That Won't Let You Rest": The Experiences Of Counselor Educators Of Color Who Teach Social Justice, Sunanda M. Sharma

Theses, Dissertations and Culminating Projects

Social justice advocacy has been described as a foundational ethical duty for all professional counselors (American Counseling Association, 2014). Counselor educators of color (CEOCs) have advocated for the advancement of multiculturalism and social justice in counseling (Sue et al., 1992; Vera & Speight, 2003). However, their lived experiences are not well-accounted for in the counseling literature. Grounded in critical race theory (CRT) (Delgado & Stefancic, 2017), this phenomenological study sought to explore the lived experiences of CEOCs who teach students to engage in systemic social justice advocacy (SSJA). Eleven participants described the essence of their experiences and four themes emerged …

The Lived Personal History Of Queer Teachers Engaged In Queer Pedagogy, Michael C. Shera

Theses, Dissertations and Culminating Projects

This study examines a group of five queer teachers of varied ages and genders who discussed their lived experiences navigating the heteronormativity of public school structures in conjunction with their work using queer pedagogy to support students. It answers the research question: How does the lived personal history of queer educators influence how, when, and in what ways they take up queer pedagogy? Employing a life history interview methodology, along with queer theory as a theoretical framework, this study explores intersections of the participants’ life history and their engagement in queer pedagogy to examine why and how they are driven …

Comparative Expression Of Cgmp-Dependent Protein Kinase G (Pkg) From Plasmodium And Toxoplasma, Tsopmo Asaah

Theses, Dissertations and Culminating Projects

Malaria and Toxoplasmosis are life threatening diseases to humans. The search for a cure and control of these diseases is still one of the major challenges of scientists worldwide. In this research we focused on two Malaria species; Plasmodium bergei² (Pb) and Plasmodium falciparum¹ (Pf) and also on Toxoplasma gondii. Part of the life cycle of these organisms is regulated by the enzyme cyclic GMP-dependent protein kinase G (PKG)⁴. This is our drug target in this research. We believe that inhibiting this enzyme will be a great step in fighting these diseases. In this research, we devised a comparative study …

Regulation Of Icer Degradation And Its Role In Melanoma, Justin Wheelan

Theses, Dissertations and Culminating Projects

Melanoma is the deadliest form of skin cancer, with 100,640 new cases and 8,290 deaths estimated in the United States in 2024. While targeted therapies and immunotherapy have improved patient outcomes, resistance remains a major challenge, necessitating new therapeutic approaches. Approximately 50% of melanomas harbor BRAFⱽ⁶⁰⁰ᴱ mutations, leading to constitutive MAPK pathway activation. Targeted small molecule therapies such as BRAF and MEK inhibitors are available and initially reduce tumor burden, however resistance frequently occurs, likely through many pathways including compensatory activation of cAMP signaling. ICER (Inducible cAMP Early Repressor), a transcriptional repressor of CREB-mediated gene expression, is absent in melanoma …

A Pilot Study Exploring Vitamin D, Mental Health, And Gastrointestinal Health In Humans, Brianna C. Williams

Master's Theses

Mental disorders are experienced by nearly one billion people worldwide. Depression is one of the most common. Treatments exist, yet a devastating 75% of individuals suffering from depression do not receive adequate treatment. An emerging treatment strategy includes exploring the connection between mental health and nutrition, which includes the areas of gut health and nutrient deficiencies. Vitamin D is obtained through food, supplements, and sunlight. Many individuals are considered deficient (25[OH]D concentrations < 12 ng/mL) or insufficient (25[OH]D concentrations < 20 ng/mL). Purpose: This study aimed to explore mental and gastrointestinal (GI) health using surveys and lipopolysaccharide binding protein (LBP) concentrations, a biomarker of GI health, in individuals considered 25(OH)D deficient (DEF) vs not deficient (N-DEF). Methods: This cross-sectional study recruited physically active participants aged 18-45 years who underwent three evaluations in one visit. Health was assessed using surveys to evaluate mental health, GI symptoms, and vitamin D intake. Serum from fasting blood samples was used with an enzyme-linked immunosorbent assay to determine 25(OH)D and LBP concentrations. Unpaired t-tests were used to compare DEF vs N-DEF and significance was set at p < 0.05. Results: Thirty-two participants (mean age 25.3 ± 6.3 years) with mean and body fat percentage of 24.0% ± 10.7%, were placed into DEF (n=16) and N-DEF (n=16) categories. Interestingly, five of the 16 participants in DEF (31%) showed some level of depression (scores ranging from mild to severe) and only two of the 16 participants in N-DEF iv (13%) scored positively in the depression category (scores ranging from mild to moderate). Additionally, the participant with the lowest 25(OH)D concentration (5.42 ng/mL) was the only participant to meet the “severe” depression category criteria, with a score of 24 compared to other participants who scored within 0-16. Also, the only participant who scored “severe” in the stress category, was in the bottom 20% of 25(OH)D concentrations. As for GI health, the difference between average GI scores and average serum LBP concentrations between the groups were not statistically significant. Conclusion: There were no significant differences between DEF and N-DEF in perceived depression (p = 0.16), anxiety (p = 1.0), stress (p = 0.96), GI symptoms (P values ranged from 0.27 to 1.00), nor in LBP concentrations (p = 0.77). Funding: Support was received from the Graduate Student Association and College of Natural Health Sciences at the University of Northern Colorado.

Investigating The Influence Of Experimental Parameters On The Formation Of Gold Nanoparticles: A Green Synthesis And Design Of Experiments Approach, Isaac Opeyemi Subuloye

Master's Theses

This thesis examines the green synthesis of gold nanoparticles using catechin, a naturally occurring plant-derived compound, as both a reducing and capping agent. The synthesis process was guided by a structured Design of Experiments (DOE) methodology to ensure systematic investigation and optimization. A two-phase experimental approach was adopted. First, a full factorial screening design was used to evaluate the effects of catechin concentration, NaOH concentration, and pre-reaction time. This was followed by an optimization phase using a face-centered composite design to identify conditions that produce nanoparticles with ideal characteristics. The nanoparticles were analyzed using UV-visible spectroscopy and dynamic light scattering …

Cultivating Identity, Workforce Readiness, And Heutagogical Lifelong Learning: The Case For Student-Trained Ai Agents In Postsecondary Education, James Hutson

Faculty Scholarship

The accelerated integration of human-centered artificial intelligence and human-computer intelligent interaction (HCII) into postsecondary education has inaugurated a paradigm shift in how learners develop cognitive, socio emotional, and professional competencies. This article argues that requiring students to iteratively build and refine custom AI agents—digital “clones” or GPTs trained on their evolving beliefs, knowledge, values, and interests addresses three pressing challenges facing contemporary higher education. First, the process of self-modeling via agent training compels deep self-reflection, fostering socio-economic development and identity formation during the critical neurodevelopmental period that extends into the mid-twenties. Second, as industry trends increasingly prioritize the creation of …

Examining Associations Between Internalized Racism, Psychological Flexibility, And Well-Being Among Bipoc, Cerella Chandra

Dissertations

Internalized racism has been defined as the adoption of negative stereotypes related to one’s racial/ethnic group and associated with psychological distress. There is little research on the effectiveness of Acceptance and Commitment Therapy (ACT) on diverse populations, but recent intervention studies have indicated that psychological flexibility may counter the negative psychological effects of self-stigma. The purpose of this study was to examine the relationship between internalized racism, psychological flexibility, and psychological distress and life satisfaction among Black, Indigenous, and People of Color (BIPOC). Self-report data was collected using Qualtrics with prospective participants recruited from a large public university in the …

Predictors Of Cyberbullying And Help-Seeking Behaviors In Rural Midwestern Schools: A Multilevel Modeling Analysis, Ashley M. Harrison-Pavlik

Dissertations

Cyberbullying is a significant problem throughout the United States. Many risk factors have been identified for cyberbullying victimization, including experiencing traditional bullying victimization, social media usage, gender, and underrepresented racial/ethnic status, although the results are inconclusive. In response to cyberbullying, youth may choose to engage in or avoid help-seeking behaviors. Individual characteristics such as age, gender, frequency of victimization, race and ethnicity, and student perceptions of school staff can influence whether a youth seeks help. School level variables, including anti-bullying policies and teacher awareness and perceptions of cyberbullying may also impact help-seeking behaviors. However, few studies have empirically assessed their …

Too Big To Fail? Using Microsatellites To Examine The Population Genetics Of Flathead Catfish (Pylodictis Olivaris) In Missouri Impoundments, Aaron Krolow

Dissertations

Flathead Catfish (Pylodictis olivaris) is a popular sportfish managed for recreational and commercial uses. Currently, managers in Missouri have implemented various reservoir-specific bag and length limits for P. olivaris to create sustainable populations of quality-sized individuals available for anglers to capture. In conjunction with field studies to estimate growth rates and size/age distributions, I developed and scored 15 microsatellite markers to estimate the effective population (Ne) and population structure within 10 Missouri reservoirs. I assessed the power of the markers to get acceptably precise estimates of Ne using NEoGen assuming life-history parameters (e.g., age at maturity, longevity and fecundity) estimated …

An Injectable, Dual-Curing Hydrogel For Controlled Bioactive Release In Regenerative Endodontics, Meisam Omidi, Daniela S. Masson-Meyers, Jeffrey M. Toth

Biomedical Engineering Faculty Research and Publications

Regenerative endodontics seeks to restore the vascularized pulp–dentin complex following conventional root canal therapy, yet reliable neovascularization within the constrained root canal remains a key challenge. This study investigates the development of an injectable, dual-curing hydrogel based on methacrylated decellularized amniotic membrane (dAM-MA) and compares its performance to a conventional gelatin methacryloyl (GelMA). The dAM-MA platform was designed for biphasic release, incorporating both free vascular endothelial growth factor (VEGF) for an initial burst and matrix-metalloproteinase-cleavable VEGF conjugates for sustained delivery. The dAM-MA hydrogel achieved shape-fidelity via thermal gelation at 37 °C and possessed tunable stiffness (0.5–7.8 kPa) after visible-light irradiation. …

Small Stream Restoration In The Piedmont Of South Carolina: Comparison Of Evaluation Tools And Water Quality’S Effects On Salamanders, Camryn Lachica

All Theses

For many years, the United States Army Corps of Engineers (USACE) used the Guidelines for Preparing a Compensatory Mitigation Plan worksheets to guide pre-restoration evaluation and determine post-restoration mitigation credits in South Carolina. Recently, the USACE in South Carolina transitioned to the Stream Quantification Tool (SQT), which provides a more comprehensive assessment framework. Our first objective was to compare these assessment methodologies across different landscape types to determine what the SQT adds to mitigation calculations that were not considered in prior worksheets. We evaluated 16 streams in the Piedmont of South Carolina, with four replicates each of forested, suburban, urban, …

A Comparative Study Of Land Use Regulations And Impact On Coastal Estuaries, Mabel W. Dadzie

All Theses

The study presents a mixed method and longitudinal assessment of land cover change, estuarine land loss, and policy implemented to address the past and anticipated estuarine losses in the Cooper River and North and South Santee watershed over the past twenty years. This study uses National Land Cover Dataset from 2001 to 2021, NOAA’s SLR projection data and planning documents from 1990 to 2025 to examine policy evolution among ten major themes. The results illustrate significant changes in land cover, notably the transition of wetlands, agriculture, and forests to developed land, as well as an evident spike in the integration …

Ecological And Social Resilience In Wildfire-Prone Communities, Melissa Burnett

All Theses

Climate projections suggest extreme weather variability, introducing extremely wet years, followed by years with extreme drought. These weather conditions are creating fire weather conducive to increasing wildfires across the southeast over the next century, which can have extreme ecological consequences. The Appalachian Mountains historically had some of the highest fire frequencies in North America but have been subjected to decades of fire suppression and prevention policies, resulting in an environment subject to more high-severity wildfires. The fall of 2016 was one of the driest seasons on record in this region and resulted in intense and destructive fires in the southeastern …

Polyphenols For The Mitigation Of Vascular Calcification; In Vitro And In Vivo Studies, Abdullah Altuhami

All Theses

Globally, cardiovascular diseases, in most cases associated with calcification, are the main cause of death. However, currently, the only effective cure is to undergo surgery to augment or receive a healthy donor heart, which could be very difficult due to the long waiting list and the associated risks. The possibility of body rejection of the foreign organs is attributed to immunoreaction or the risk of infection, since the donor must be on immunosuppressant drugs that lower the body's immunity and facilitate the body's acceptance of the new organ as one of its own. Taking that into consideration, using tissue-engineered vascular …