Digital Commons Network^™

Integrating Water And Nitrogen Management For Sustainable Agriculture: Optimizing Resource Use Efficiency And Maximizing Crop Productivity, Jiaming Duan

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

Advisors: Derek Heeren and Daran Rudnick Maize, accounting for over 95% of national grain production in the United States, is highly sensitive to water and nitrogen (N) inputs. Conventional agricultural practices often lead to excessive application, causing groundwater contamination through nitrate leaching. Therefore, there is a demand for integrating water and nitrogen management with innovative scheduling methods for sustainable agricultural development.

This dissertation first reviewed two decades of U.S.-based research, highlighting the optimal management of water and N to enhance yield, water use efficiency (WUE), and nitrogen use efficiency (NUE). Findings indicate that maintaining optimal levels of N and water …

"I Will Write Mad Stories": The Hysterical "I" In The Diaries Of George Eliot, Charlotte Forten Grimke, Virginia Woolf, And Sylvia Plath, Jaclyn Marie Swiderski

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

This dissertation focuses on the long history of hysteria and the ways in which it has been used to denigrate and silence disabled women. Women diagnosed as hysterical, by either the medical establishment or the court of public opinion, are denied the right to generate knowledge about and for themselves – they are epistemologically disabled. The author argues that hysterical women have unique ways of looking at and understanding the world which push back against their epistemological disablement. In order to uncover some of this history of hysterical women, this dissertation uses the diaries of four “hysterical” women over the …

A Data-Driven Discovery System For Studying Extracellular Microrna Sorting And Rna-Protein Interactions, Sasan Azizian

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

Interactions between microRNAs (miRNAs) and RNA-binding proteins (RBPs) are pivotal in miRNA-mediated sorting, yet the molecular mechanisms underlying these interactions remain largely understudied. Few miRNA-binding proteins have been verified, typically requiring extensive laboratory work. This study introduces DeepMiRBP, a novel hybrid deep learning model designed to predict microRNA-binding proteins. The model integrates Bidirectional Long Short-Term Memory (Bi-LSTM) networks with attention mechanisms, transfer learning, and cosine similarity to offer a robust computational approach for inferring miRNA-protein interactions.

DeepMiRBP is implemented through two distinct architectures. The first architecture employs a Y-shaped model that uses Bi-LSTM networks and transfer learning to extract contextual …

Role Of The Malate Dehydrogenase-Citrate Synthase Metabolon In Metabolic Flux Regulation, Joy John Omini

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

The TCA cycle enzymes- malate dehydrogenase (MDH) and citrate synthase (CS)- interact to transfer oxaloacetate from the active site of MDH to the active site of CS, through an electropositive channel. The MDH-CS metabolon is highly conserved across different domains of life, and it has been associated with many advantages. Some of these advantages include protecting oxaloacetate from competing enzymes like aspartate aminotransferase, allowing the thermodynamically unfavorable MDH forward reaction to occur and increasing the local concentration of oxaloacetate within the active site of CS. These advantages and conservativeness of the MDH-CS metabolon indicate that it is highly important to …

Dynamics Of Soybean Seed Protein And Oil Content With Depth In The Canopy, Hafith Furqoni

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

Understanding the physiological basis of variation in seed composition is critical for optimizing soybean seed composition. Also, studying dry matter accumulation and nitrogen uptake, partitioning, and redistribution in soybeans is crucial due to its direct impact on seed yield levels and overall plant productivity. This study aimed to test the primary proxy influencing seed protein and oil content, which is their accumulation rate determined by the assimilate supply per seed. The second objective was to comprehensively understand soybean dry matter (DM) accumulation and nitrogen (N) uptake, partitioning, and removal patterns within the canopy. Field experiments were conducted using two soybean …

Occurrence, Inputs, And Ecological Significance Of Antibiotics And Pharmaceuticals In Western Nebraska Streams, Katelyn F. Glause

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

Few emerging environmental contaminants are as concerning as antibiotics. Human and animal health benefits greatly from the prudent use of antibiotics, yet we give little thought to environmental release of these biologically active compounds. Environmental occurrence of these and other pharmaceutical compounds must be measured in different environmental compartments such as municipal wastewater and in the vicinity of large animal feeding operations to understand potential effects. This study reports the results of a monitoring study in western Nebraska, with a large population of livestock and smaller but more concentrated population of humans, comparing the relative environmental concentrations and loading from …

Remotely Sensed Early Warning Of Algal Blooms In An Eastern Nebraska Reservoir: A Comparison Of Temporal And Spatial Indicators, Mercy Kipenda

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

Cyanobacterial harmful algal blooms (CyanoHABs) detrimentally affect human, animal, and ecosystem health. Remotely sensed early warning systems for cyanoHABs in inland lakes could contribute to more proactive water quality monitoring and help mitigate negative impacts. Advances in freely available remote sensing imagery, with finer spatial, temporal, and spectral resolutions, present new opportunities for the development and comparative analysis of methods to detect sudden deterioration in lake water quality. In this thesis, I compared and tested for temporal and spatial early warning signals of cyanoHABs in field-based and remotely sensed datasets from 2019 to 2023 in Pawnee Lake in southeast Nebraska, …

Impacts Of Invasive Carp And Their Population Dynamics On Fish Communities In The Missouri River, Joshua F. Kocik

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

Invasive Carp species: Silver Carp Hypophthalmichthys molitrix, Bighead Carp Hypophthalmichthys nobilis, Grass Carp Ctenopharyngodon idella, and Black Carp Mylopharyngodon piceus have both potential and realized abilities to negatively impact native species. Specifically, Bighead Carp and Silver Carp as filter feeders have been theorized to be detrimental not only to adult filter-feeding species, but to many fish which rely on plankton and algae in their early-life stages. The impact of Invasive Carp on the overall fish community remains underexplored. The fish communities below Gavins Point Dam (Invasive Carp present) and Fort Randall Dam (Invasive Carp absent) afford the …

Spatiotemporal Plasticity In Reproductive Readiness And Recruitment Of Ichthyoplankton Of Invasive Silver Carp Along A Western Invasion Front, Jessi L. Urichich

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

Individuals of invasive species at the edge of their invasion distribution may exhibit enhanced reproductive capacity and phenotypic plasticity leading to accelerated range expansion. Environmental conditions in highly fluctuating environments at distribution edges may either promote or hinder such reproductive readiness and phenotypic plasticity. Dynamic habitat conditions and periodic disturbances experienced in prairie streams, such as drought (e.g., low-flow, high water temperatures), may potentially reduce suitable spawning environments and ichthyoplankton recruitment of invasive Silver Carp, potentially slowing range expansion or enabling management strategies that reduce abundance in the absence of a reproducing population. Female Silver Carp batch fecundity, Gonadosomatic Index …

Assessing, Restoring, And Centering Social–Ecological Relationships For Advancing Social–Ecological Resilience In The Northern Great Plains Grasslands, Katia Pilar Carranza Bernal

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

The Northern Great Plains grasslands are social-ecological systems that were shaped by evolutionary and Indigenous social-ecological relationships. European colonization disrupted many of these interactions, including the coupling of fire and grazing, and degraded social-ecological resilience, shifting these grasslands to a new state. For those reasons, my research focused on assessing, restoring, and centering evolutionary and Indigenous social-ecological relationships for advancing social-ecological resilience in the Northern Great Plains grasslands. I first performed a study in the Nebraska Sandhillls assessing the potential of patch-burn grazing to support grassland resilience by comparing its effects to those of rotational grazing. Through vegetation and bird …

We're Swarming Again! Swarming, Collectivity, And Trope: The Case Of Extinction Rebellion, Tyler J. Behymer

Department of Communication Studies: Dissertations, Theses, and Student Research

This thesis explores the rhetoric of the eco-movement Extinction Rebellion, focusing on the use of swarming and nature tropes to mobilize collective action and revivify contemporary notions of collectivity. Drawing on rhetoric of social movement scholarship, cultural studies, and psychoanalysis, this essay theorizes swarming as a tropological economy that expands the conditions of propriety in the context of collectivity. Through an analysis of Extinction Rebellion’s discourse, this study demonstrates how the naturalization of swarming tropes works in various ways to rewild conventional political discourse, galvanize disruptive collective assembly, and challenge green neoliberalism.

Advisor: Casey Ryan Kelly

Integration Of Matlab And Machine Learning To Accelerate Evaluation Of Biological Activity In Agricultural Soils And Promote Soil Health Improvement Goals, Andrew Stiven Ortiz Balsero

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Traditionally, assessments of soil biological activity have been confined to laboratory settings, creating a disconnect with practical in-field methods. To bridge this gap, cotton fabric degradation has been used to illustrate soil microbial activity under different management practices. While effective, these demonstrations are subjective and labor-intensive.

Researchers have explored using image processing software like ImageJ and Adobe Photoshop to streamline this process. Although these tools accurately quantified fabric degradation under varying soil conditions, the methods remained labor-intensive and complex. Consequently, these methods were still not ideal for on-farm use by agricultural practitioners.

To further address labor and complexity limitations, the …

Child And Caregiver’ Perspective On Barriers To Asthma Management At A Tertiary Referral Hospital In Kenya, Joan Kwesigabo Ahimbisibwe

Master of Medicine in Paediatrics and Child Health

Background: Asthma is one of the most common chronic conditions in children, with significant morbidity and mortality, especially in Africa. Achieving adequate asthma control in children remains challenging due to gaps between standard recommended management strategies and treatment practices. This study explored barriers to asthma management as perceived by children and their caregivers in a private tertiary care setting in Kenya.

Methods: An exploratory phenomenological qualitative study was conducted at Aga Khan University Hospital (AKUH), Nairobi. Children aged 6–18 years with a confirmed diagnosis of asthma and their caregivers were recruited. Participants had been receiving treatment for at …

A Quality Improvement Project On The Evaluation Of A Community Gastroenterology Advanced Practice Providers’ Update On The Utilization Of The American College Of Gastroenterology (Acg) Recommendation For Annual Depression Screening In Patients With Inflammatory Bowel Disease, Yolanda Levy Dnp, Fnp-Bc

All Dissertations

Inflammatory bowel disease (IBD) is an autoimmune disease that can result in chronic inflammation in the gastrointestinal tract (Farbod et al., 2021). The two most common types of IBD are called Crohn’s disease and Ulcerative Colitis. There have been several studies that have shown how the psychological disorders, including depression, can be associated with flares of IBD (Farraye et al., 2017). The American College of Gastroenterology (ACG) published clinical practice guidelines in 2017, which recommended gastroenterology (GI) healthcare providers screen for depression in all patients with IBD at least once annually (Farraye et al., 2017). This quality improvement did show …

Legal Research Instruction In The Nextgen Era, Alyson Drake, Amanda Watson

Buffalo Law Review

No abstract provided.

Bearing The Woken Bear: Kazakhstani Educators Making Sense Of The Russian Invasion In Ukraine And Its Consequences For Internationalization Of Higher Education In Kazakhstan

Journal of Comparative & International Higher Education

Special Issue

Georgia Library Association Executive Board Officer Candidates For 2025, Kim Copenhaver

Georgia Library Quarterly

No abstract provided.

Willingness To Report Sexual Victimization Through Formal And Informal Routes And The Correlation To Victim’S Race, Sexual Orientation, And Gender Identity, Tara Diltz

Master's Theses

The purpose of this study is to understand the impact, if any, that holding marginalized identities has on the willingness to report sexual victimization to law enforcement, Title IX offices, and informal support routes. This study examines the various factors that may influence one’s willingness to report sexual victimization through both formal and informal routes. Formal routes include law enforcement and Title IX, while informal routes involve the self-disclosure of victimization to families, friends, or romantic partners. This research specifically explores how racial and ethnic identities, sexual orientation, and gender identity can influence an individual's perceived willingness to report sexual …

Higher Education On The Texas Blackland Prairie: Trinity University's Civil War Era, Sarah Beth Kaufman

Sociology & Anthropology Faculty Research

The article provides a model for other southern colleges and universities founded during the Civil War era to clarify how they, too, benefited from the slave economy. It describes how Trinity University's founders were able to accomplish their institution's unlikely survival and enrich their own positions by creating a valuable new educational commodity. It also explores the historiography of nineteenth-century higher education.

Students As Faculty Gender Equity Allies: Mitigating Students’ Gender Biases Through Short-Term Awareness-Intervention And Long-Term Research Literacy Training, Li-Yin Liu, Christopher Brough, Dongfang Gaozhao, Hannah Kling, Isabella Thomeier, Veronica Vasko

Reports from the Gender Equity Research Fellowship

This report investigates four interrelated questions: 1) Do gender biases influence the University of Dayton (UD) undergraduate students’ evaluations of the credibility of gender-related research? 2) If such biases exist, can SSC 200 effectively reduce them? 3) Can awareness raising intervention reduce biases in how students evaluate their professors’ teaching effectiveness? 4) Do professors’ identities, including gender and racial ethnicity, affect students’ course enrollment preferences?

To answer these questions, we conducted three separate, but interrelated, studies. The first study aims to address whether UD students have gender bias when evaluating the credibility of information and if short term and long-term …

Female Criminal Agency In Early Fourteenth-Century Norfolk, Anna K. Davis

Masters Theses

Medieval women who were on the wrong side of the law expressed agency in a specific and unusual manner. Criminal agency, as it were, was a way for them to express their wants and desires in a way that is no less valid a subject of study than actions that were legally permissible. However, this agency was constrained by medieval notions of women’s capability. This thesis examines women and their crimes found in an early fourteenth-century Norfolk gaol delivery roll to further understand how the men who ran gaol delivery “allowed” women to be criminal. As gaol delivery rolls were …

Mental Models Of Translational Scientists, Rasnia Tabpla, Antonie J. Jetter

Engineering and Technology Management Faculty Publications and Presentations

Translational science aims to bridge the gap between scientific discoveries and practical application yet faces challenges in achieving high success rates. This study examines the effective engagement of translational scientists, who play a key role in the translation process. It uses Fuzzy Cognitive Maps (FCMs) to analyze the scientists' mental models and identify common concepts related to success factors, such as ability, resources, opportunity, and entrepreneurial competencies. It then compares the mental models of the scientists and finds that mental models exhibit similarities, yet variations exist such as density and connectedness. Scenario analysis with FCM is then used to identify …

Does Early Life History Influence A Novel Biomarker For Stress In Dogs And Predict Their Attachment To Their Owners?, Kylie Hughes-Duvall

Psychology Theses, Dissertations, and Student Creative Activity

Previous research suggests dogs with adverse life experiences (e.g., abuse, neglect) have altered HPA-axis activity and attachment styles. Although research on stress biomarkers in dogs has primarily focused on the HPA-axis and cortisol, human research suggests the sympathoadrenal medullary (SAM) pathway is also altered by acute stress and associated with changes in salivary α-amylase. Though α-amylase has been identified in canine saliva, it has yet to be studied as a biomarker for acute stress. Furthermore, limited research exists on the influence of life adversity on dogs’ attachment styles. This study investigated salivary α-amylase as a biomarker of acute stress in …

How Do Grandparents Invest In Grandchildren?, Donna Syme

Boise State University Theses and Dissertations

Kin selection theory explains hour individuals can increase inclusive fitness through tradeoffs and investment of care in children. Most research focuses on direct care methods, such as meeting physical needs of children, rather than indirect methods of care such as financial and emotional support. The roles of grandparents are important and are felt at every age level in grandchildren. This relationship has beneficial effects including past knowledge, support, mentoring, and direct care and indirect care methods. Recent studies have been conducted to see what physical and mental benefits are gained by investing in grandchildren in a variety of social conditions. …

Biochar Impacts On Soil And Sagebrush Seedling Establishment Across A Natural Recovery Gradient In The Sagebrush Steppe, Ashley Leavell

Boise State University Theses and Dissertations

Large areas of the sagebrush steppe are destroyed by wildfire, which catalyzes invasive species growth, increases soil nitrogen availability, reduces soil water retention, and disrupts soil symbiont-plant interactions. These changes in biogeochemical properties may explain why restoration success remains limited. Biochar is a soil amendment created from pyrolyzed plant biomass that may reduce soil N availability and increase water retention. Our study aims to evaluate whether changing soil properties using biochar may enhance the survival of sagebrush seedlings. We installed an experiment south of Boise, Idaho at a site that burned in 1983. Nursery-grown sagebrush seedlings were hand-planted in November …

“I’M Stressed—You Have To Do Something To Help Me:” The Relationship Between Student Academic Entitlement, Academic Stress, And Satisfaction, Rebbecca L. Nemec

Dissertations

Concern over academic entitlement has grown in higher education in the last two decades. Academic entitlement, defined as unfounded expectations of academic success, undeserved services and unrealistic accommodations (McLellan & Jackson, 2017), in nursing students is an under investigated phenomena. The purpose of this study was to examine the impacts of academic stress and general student satisfaction on academic entitlement beliefs in baccalaureate, junior, and senior level nursing students. In this correlational, cross-sectional study, the transactional theory of stress (Lazarus & Folkman, 1987), and Jeffreys’ (2022) nursing universal retention and success model were used to understand how academic stress and …

A New Look At Russia-China Relations: Implications, Expectations And Reality, Aidana Bolat

Dartmouth College Master’s Theses

This thesis examines the nature of the evolving relationship between Russia and China from 2018 to 2024, focusing on political, economic, and security aspects. The research aims to determine whether their interactions are an alliance, a partnership, or a more complex arrangement. The study takes a multidimensional approach: analyzing political cooperation through their participation in international organizations such as the UN, SCO, and BRICS, mutual support in UN voting records, diplomatic commitments, and regional political strategies. Economic cooperation is assessed through trade dynamics and analysis of official trade data. Security cooperation is examined by examining arms sales, joint military exercises, …

The Effect Of Trauma On Student Academic Achievement, Wendi N. Petersen

Masters Projects

This paper explores what current research says about the significant effect that childhood trauma has on student academic achievement. It looks at the ways in which students are impacted by trauma, how this affects them in the classroom and finally recommends a solution to help support educators and school staff in providing a safe, compassionate and encouraging classroom environment for students to learn and thrive in. Educators encounter numerous challenges in today's classrooms. The diverse needs of students today create a unique set of obstacles that teachers must navigate and address in their teaching. Students affected by childhood trauma present …

Density Functional Theory Study Of Some Important Biological Molecules, Desmond Khan

Theses and Dissertations

This study examines the performance of various quantum chemical methods, particularly density functional theory (DFT), in predicting noncovalent interactions in eleven unnatural amino acids. The research compares five DFT functionals (PBE-D3, B3LYP-D3, HSE06, M06-2X, and ꞷB97XD) and MP2 theory against the benchmark CCSD(T) method, using two Pople basis sets (6-31G* and 6-311++G**). Results highlight ꞷB97XD's superior performance in capturing strong dispersion interactions, especially when paired with the 6-311++G** basis set. Additionally, the study investigates interactions between biomimetic Fe and Mg co-doped montmorillonite clay and the amino acids. It reveals the necessity of employing PBE-GGA + U with U ≥ 4 …

Women's Experience Of Cancer Treatment During Covid-19 On The Texas-Mexico Border, Kayla E. Castañeda

Nursing Theses and Dissertations

The COVID-19 pandemic exposed existing racial, ethnic, socioeconomic, geographic, and gender disparities in cancer care and highlighted the need for more research in understudied populations. No studies have elucidated the experience of women living on the Texas-Mexico border receiving cancer treatment during the pandemic. This study explored the lived experience of receiving cancer treatment during the COVID-19 pandemic in 2020 for women living on the Texas-Mexico border and identified participants' self-identified unmet needs while receiving cancer treatment during the COVID-19 pandemic on the Texas-Mexico border. Following IRB approval and informed consent, ten women living on the Texas-Mexico border who received …