Digital Commons Network^™

Bridging The Gap: Fostering Emotional Expression Through Teaching Strategies In The Middle School Choral Classroom, Jacob Brown

Graduate Theses/Dissertations

This study investigates the impact of teacher-elicited expression strategies (i.e. emotionally evocative metaphor, technical elements through modeling, body of the conductor, understanding the emotional content) on the emotional expressivity of my middle school choral students. Using a mixed-method approach, data was collected through surveys of students' self-evaluations of the expression strategies, and their overall value of expression before and after learning processes that emphasized emotional expressivity. I found that each teacher-elicited expression strategies impacted student expressivity positively. Concrete strategies (i.e., body of the conductor and technical elements through modeling) were highly effective, particularly in my beginner and intermediate choirs, while …

Modeling The Impact Of Climate Change On Plant Hardiness Zones Across The Contiguous United States Using Empirical Bayesian Kriging Regression Prediction, Daniel Donkor

Graduate Theses/Dissertations

Mapping plant hardiness zones is crucial to understanding and predicting the spatial distribution of plants in response to climatic conditions. The United States Department of Agriculture (USDA) developed the plant hardiness zones based on the average of annual extreme minimum temperatures using the Parameter elevation Regression on Independent Slope Model (PRISM). While the USDA’s 2012 and 2023 Plant Hardiness Zone maps remain standard references, they offer limited geostatistical transparency that causes more complications in replicating. This study applies Empirical Bayesian Kriging Regression Prediction (EBKRP) method to generate Plant Hardiness Zone maps, analyze spatial and temporal shifts in the plant hardiness …

Dystopian Politics In The Hunger Games Series, Tristan Hogan

Graduate Theses/Dissertations

Suzanne Collins’s The Hunger Games series takes readers to a fictional country known as Panem that hosts an annual nationwide celebration in which adolescents compete in a battle to the death. In this analysis, I approach this book series with a Marxist lens to argue that the capitalistic system in Panem satirizes American culture in the early 21st century. Every novel in the series, through this theory, can be read as what scholars identify as a “critical dystopia,” a defamiliarized version of our culture, upheld through institutions and social participation in a way that satirizes ours. I argue that the …

Building Rhythmic Independence In Beginning Band Students, Caroline Williams

Graduate Theses/Dissertations

The purpose of this study was to design and implement a unit of instruction based upon three common approaches to teaching rhythm in the beginning band setting and to examine their effect on the rhythmic understanding, confidence, and independence of students in my sixth grade beginning band class. Students received instruction that was traditionally-based, aurally-based, and movement-based for one week each, respectively. An analysis of my teaching was provided by the notes I took that detailed what my students and I did throughout the study. Through my instruction, my students were able to increase their interactions with rhythm. Students were …

Constructing Hamiltonians Using A Wannier Basis Set To Study Localized Electronic Interactions Using A Variational Quantum Eigensolver, Matthew D. Bruenning

Graduate Theses/Dissertations

In this study, I demonstrate how Wannier basis sets can be used to construct a tight binding Hamiltonian that is localized in real space. This Hamiltonian can then be studied using the Variational Quantum Eigensolver (VQE), which is able to extract the minimized energy of the system. Unlike Bloch functions, Wannier functions are localized in real space, allowing each Hamiltonian element to represent orbital overlaps between neighboring atomic orbitals. This locality enables a substantial reduction in the Hamiltonian’s size by including only the orbital projections that contribute meaningfully to localized interaction energies, such as those involved in adsorption. As a …

The Influence Of Flower-Microbe Interactions On Bumble Bee Behavior And Gut Microbiome Composition, Success Chiamaka Ekemezie

Graduate Theses/Dissertations

This thesis examines how microbial interactions in floral nectar and environmental variation influence bumble bee (Bombus spp.) foraging behavior and gut microbiome composition. Pollen germination experiments and behavioral assays in the lab tested whether Metschnikowia reukaufii (yeast) and Acinetobacter nectaris (bacteria) induce pollen germination and bursting in nectar and affect bee behavior subsequently. Both microbes reduced intact pollen, but bees did not alter flower preference. Furthermore, the study also assessed how floral and bee community composition shaped gut microbiome composition across six Missouri prairies. Using amplicon-sequenced fungal ITS and bacterial 16S rRNA genes, I found that fungal microbiome composition varied …

Generational Exposures To Cerium Oxide Nanoparticles And Perfluorooctanesulfonic Acid Affect The Performance Of Daughter Plants, Preston Clubb

Graduate Theses/Dissertations

The effects of parental stress on the performance of next generation exposed to another contaminant were investigated. Wheat was exposed to cerium oxide nanoparticles (CeO2-NPs) in first and second generations and exposed to perfluorooctanesulfonic acid (PFOS) in the third generation. Phenotypic or metabolic responses were assessed at 21-day (short-term exposure) or 90-day (long-term exposure) exposure periods. Biomass production, chlorophyll content, enzyme activity, and membrane damage were measured at short-term exposure, while elemental and PFOS concentrations, and grain metabolites were analyzed in long-term exposure. Results showed that continued exposures to CeO2-NPs and PFOS enhanced chlorophyll content but reduced concentrations of important …

Civilian Manufacturing And National Defense: Strategic Planning For Globalization's Challenges, Izeck Kohler

Graduate Theses/Dissertations

This thesis examines the interconnection between civilian manufacturing and national defense within the context of globalization. The study aims to identify the challenges faced by the United States in maintaining its manufacturing capabilities and to propose strategic solutions to address these challenges. Through a comprehensive analysis of historical data, case studies, and policy recommendations, the research highlights the critical role of specialized and process manufacturing sectors towards national defense. The findings suggest that the creation of a federal executive department, strategic investment, diversification, policy re-evaluation, and collaborating with allies are essential for sustaining national defense capabilities. The study concludes with …

Empowering U.S. Allies In The Indo-Pacific: An "America First" Approach To Great Power Competition, Nathaniel Benjamin

Graduate Theses/Dissertations

The Indo-Pacific is the primary area for Great Power Competition between the United States and China. China’s rapid but cautious rise has allowed it to achieve a position that threatens to upset the norms and rules of the U.S.-led system in the region. The second Trump Administration has pursued an “America First” policy since taking office in January 2025, but pushing U.S. allies to take on more responsibility for their own defense will not be enough. U.S. allies are major regional players and should be trusted to uphold the principles of the current international system; therefore the U.S. must limit …

Victim-Offender Relationships And Their Influence On Crime Brutality And Sentencing Outcomes In Capital Homicide Cases, Samantha Jane Trowbridge

Graduate Theses/Dissertations

This study examines capital murder cases in Missouri from 1976 to 2022 to explore how victim-offender relationships relate to both the brutality of homicides and sentencing outcomes. It addresses three main questions: What are the different types of victim-offender relationships in these cases, and how frequently does each type occur? How do these relationships influence sentencing outcomes, particularly the likelihood of receiving the death penalty versus life without parole? And which types of relationships are associated with the highest and lowest levels of brutality? The study uses official court records and applies a coding process to analyze relationship type, sentencing …

A Novel Deterrence Strategy: Denial Through Space And Cyberspace, Nathan A. Heard

Graduate Theses/Dissertations

The United States faces numerous security threats now and in the coming decades. Authoritarian and revisionist powers such as China and Russia, along with regional proxies, are destabilizing the international order. The ability of the United States to adequately address these present and future threats is constrained by conventional and nuclear forces in need of recapitalization, a rising national deficit, disagreements over the direction of U.S. foreign policy, and a defense industrial enterprise that has its roots in the Cold War. In a multi-peer threat environment, this situation erodes U.S. credibility and is an invitation for aggression. Coercion, coordinated multi-theater …

Giant Cane (Arundinaria Gigantea) And The Swainson’S Warbler (Limnothlypis Swainsonii): Implementing Innovative Monitoring Techniques For Species Of Conservation Concern, Gabriela Carroll

Graduate Theses/Dissertations

In the U.S., following colonization and agricultural expansion, giant cane (Arundinaria gigantea) has been reduced to approximately 2% of its original extent, potentially causing shifts in the abundance and distribution of over 70 associated animal species. Among those species is the Swainson’s Warbler (Limnothlypis swainsonii), which has been known to occupy canebrakes during the breeding season. Though there is little known about the historical range of the Swainson’s Warbler and its current population status, some have hypothesized that its population may have declined due to the reduction of its suitable breeding habitat. As this species is …

Consumer Willingness To Buy And Willingness To Pay A Premium For Climate Smart Food Products, Jacob David Brewer

Graduate Theses/Dissertations

This study investigated consumer willingness to buy (WTB) and willingness to pay a premium (WTPP) for Climate Smart (CS) food products. Focusing on soil health improvement practices such as biochar utilization, data from two surveys were analyzed. One survey was implemented and sought responses from consumer households in six midwestern states, and the other survey was distributed to institutional (universities, K-12 schools, corporations, etc.) and intermediary (restaurants, grocery stores, distribution centers, etc.) buyers. Consumer WTB and WTPP was examined through two independent ordered probit models, and the buyer survey data was utilized in descriptive analysis. Findings suggested that younger consumers, …

Investigating Social Attenuation Of The Stress Response In Juvenile Northern Cottonmouths (Agkistrodon Piscivorus), Alyssa Owens

Graduate Theses/Dissertations

When social organisms encounter a stress-inducing event, the presence of a conspecific can dampen the physiological and/or behavioral response elicited by the stressor. This concept, termed ‘social buffering’, has been well documented in mammals, but there are few studies investigating this phenomenon in organisms traditionally perceived as asocial, including reptiles. However, the paradigm is shifting, and social behavior is now more widely recognized in reptiles, including snakes. In this study I tested whether juvenile Northern Cottonmouths (Agkistrodon piscivorous) experience social buffering by measuring changes in heart rate in snakes following an acute stressor with and without the presence …

Efficient Task Scheduling In Cloud Infrastructures Using Dynamic Score-Based Allocation And Deep Q-Learning, Shadman Sakib

Graduate Theses/Dissertations

Cloud computing has grown rapidly in recent years, mainly due to the sharp increase in data transferred over the internet. This growth makes task scheduling a key and challenging part of cloud systems, as it helps distribute user requests across servers to minimize response time, prevent overloading, and ensure smooth user experience. This thesis proposes two novel approaches for dynamic task scheduling in cloud environments. First, a novel Score-Based Dynamic Load Balancing (SBDLB) strategy is developed, which leverages system parameters to allocate tasks efficiently across virtual machines (VMs) in data centers. SBDLB ensures balanced workload distribution by continuously evaluating VM …

Lc-Ms Discriminates Between Effects Of Sulfur Nanoparticles Vs Molybdenum Disulfide Nanoparticles On Lettuce (Lactuca Sativa), Mary Fakunle

Graduate Theses/Dissertations

Nanotechnology is gaining attention in agriculture, majorly due to their potential benefits in farming practices. Sulfur and molybdenum disulfide nanoparticles are reported to enhance plant growth, protection, and nutrient delivery. However, there is a need to understand how nano-fertilizers affect the metabolites and nutritional benefits of plants. Here, lettuce was cultivated under greenhouse in one of three treatments: control, 50 ppm S NPs, and 20 ppm MoS2 NPs. A method was developed on Liquid Chromatography – Mass Spectrometry (LC-MS) instrument to quantify the concentration of amino acids and antioxidants in the harvested lettuce plants. Inductively Coupled Plasma – Mass Spectrometry …

Indopacom Force Structure: A Trajectory Into The 2030s, Robert Burke

Graduate Theses/Dissertations

Over the past ten years Taiwan has become a major point of friction between the United States and People’s Republic of China with both militaries preparing for a potential conflict over the island. China vastly expanded its military forces and capabilities over the past thirty years and is intent on obtaining the ability to both seize Taiwan by force and prevent the United States from generating enough combat power to intervene and defend the island. The Pentagon began to restructure its conventional forces in the Western Pacific at the end of the 2010s, implementing new operational concepts designed to fight …

Alpha-Synuclein Interaction With Gedunin, Tony Matundura Nyabayo

Graduate Theses/Dissertations

Parkinson’s disease (PD) and other Proteinopathies develop when α-synuclein misfolds and aggregates into toxic amyloids. While existing treatments for PD are primarily focused on managing its symptoms, a viable solution for slowing down the progress of Parkinson’s disease involves targeting the toxic α-synuclein amyloids. Gedunin, a natural inhibitor of heat shock protein 90, has been extensively used to treat malaria. Also, recent research investigations have shed light on its potential beyond malaria therapy, indicating that Gedunin may offer a possible solution for treating a variety of neurodegenerative diseases. Using plate-based assays, we examined how Gedunin influences α-synuclein fibrillation and its …

Topology-Guided Adaptive Social Navigation For A Robot In Environments With Dynamic Obstacles, S.M. Faiaz Mursalin

Graduate Theses/Dissertations

Robotic navigation in dynamic environments presents significant challenges, particularly in managing interactions with moving obstacles while ensuring efficient path planning. Incorporating social navigation principles is crucial as robots share the same workspaces with humans frequently in daily life. This becomes essential for safe, efficient, and socially acceptable movements. In this thesis, I introduce a novel integration of social navigation strategies with topological path planning that leverages Discrete Morse Theory, a homotopical framework to enhance adaptability. My method dynamically assesses path feasibility and optimizes trajectory selection through three key strategies: waiting, deflection, and diverse path selection. Based on how close the …

A Mystery Of Microecology: Revealing The Ecological Relationship Between Allorhizobium Vitis And Missouri Native Grape Species, Hunter White

Graduate Theses/Dissertations

Crown gall disease can be very detrimental to grape and wine producers around the world by reducing vine vigor and yield. It is caused by the bacteria Allorhizobium vitis (A. Vitis) carrying a tumor inducing (Ti) plasmid. The A. vitis bacteria have been found in soil and cane tissues in vineyards around the world, and infect all cultivated grapes. However, there have been no reports of crown gall on native wild grapevines, and very little is known about the ecology of A. vitis in native ecosystems. I have sampled cambium tissues from three native wild grape species of …

Fostering Effective Practice: Using Metacognition Logs In The Private Voice Studio, Colleen C. Pingel

Graduate Theses/Dissertations

ABSTRACT

The purpose of this case study was to examine the short-term impact of metacognition instruction on the practice of a single voice student in a private studio. Across four lessons, the student received explicit instruction in metacognitive strategies and applied them through guided practice logs supporting planning, monitoring, adjusting, and reflecting. Each lesson began with a review and discussion of the practice logs. The teacher-researcher recorded these discussions to capture the student’s thinking and maintained a journal to document observations, instructional decisions, and reflections. Data analysis involved primarily qualitative methods focused on reflections, discussions, and practice logs. Quantitative measures, …

The Long-Term Psychological Effects Of Violent Crime On Victims: A Review Of Evidence And Supportive Interventions, Jayden E. Oleksyn-Lamb

Graduate Theses/Dissertations

This study utilizes anonymous survey data collected from 26 mental health professionals in various regions of Canada to understand which psychological disturbances are the most prevalent among victims of violent crime as well as which psychological interventions are most beneficial for treating violent crime victims. The data revealed that Post-Traumatic Stress Disorder (PTSD), Major Depressive Disorder (MDD), Generalized Anxiety Disorder (GAD), anger, guilt, self-blame, and shame are each highly prevalent. Findings also revealed that certain therapeutic methods including Eye Movement Desensitization Reprocessing (EMDR), Supportive Counselling (SC), Progressive Relaxation (PR), Cognitive Reprocessing Therapy (CPT) and Cognitive Restructuring (CR) are associated with …

Gravity And Magnetic Analysis Of The Amu Darya Basin Of Turkmenistan And Uzbekistan, Logan R. Rogers

Graduate Theses/Dissertations

The Jurassic-Tertiary Amu Darya Basin is mainly located within Turkmenistan and Uzbekistan with a small portion extending into Afghanistan and Iran. The basin is one of the largest petroleum systems in central Asia. The basin is located in the southeast corner of the Turan platform, where both the Middle Paleozoic Turkestan and Early Mesozoic Tethys oceans were closed during different orogenies. The southern boundary of the basin is along the Bande Turkestan fold belt, the Afghan-Tajik basin to the east, Paleozoic metamorphic terranes to the north, and the Karakum high (Paleozoic basement rocks) to the west. Several blocks and terranes …

Exploration And Synthesis Of Tin Intermetallic Single Crystals, Jared L. Shortt

Graduate Theses/Dissertations

This thesis presents the synthesis and characterization of two tin-based intermetallic compounds: Mn₄.₁₂Sn and Ni₆Sn₈Ge₀.₄₇. Single crystals were grown using a high-temperature self-flux method, allowing for the formation of phase-pure samples suitable for structural and physical property analysis. The crystalline phases were identified and refined using powder and single-crystal X-ray diffraction (XRD), while scanning electron microscopy combined with energy-dispersive X-ray spectroscopy (SEM/EDS) was employed to verify stoichiometry and homogeneity. Magnetization measurements performed using a superconducting quantum interference device (SQUID) magnetometer revealed distinct magnetic behavior in the manganese-rich compound, while the nickel-based compound was explored for potential magnetic features arising from …

Securing Secrets: Exploring The Aes Encryption And Key Security Capabilities Of Chatgpt, Kayla Taylor

Student Works

The development and increasing accessibility of generative artificial intelligence (AI) tools and large language models (LLMs) have allowed cryptographers to explore a variety of cryptanalysis problems in dynamic and interactive ways. Prompt engineering, the process by which input text is tested and refined to elicit a desired response from LLMs, is a nascent area of research that remains largely unexplored in many contexts, including cryptography. This study will explore the potential applications and limitations of prompt engineering in the context of Advanced Encryption Standard (AES) encryption and key security with OpenAI’s ChatGPT (GPT-4o) through two main objectives: First, given a …