Digital Commons Network^™

Intrinsic Universality In Tile Automata And Related Results, Elise C. Grizzell

Theses and Dissertations

The Tile Automata (TA) model describes self-assembly systems in which monomers can build structures and transition with an adjacent monomer to change their states. This paper shows that seeded TA is a non-committal intrinsically universal model of self-assembly. We present a single universal Tile Automata system containing approximately 4600 states that can simulate (a) the output assemblies created by any other Tile Automata system Γ, (b) the dynamics involved in building Γ’s assemblies, and (c) Γ’s internal state transitions. It does so in a non-committal way: it preserves the full non-deterministic dynamics of a tile’s potential attachment or transition by …

Benchmarking Machine Learning Algorithms For The Prediction Of Gas Adsorption In Metal-Organic Framework Materials, Juan G. Benitez

Theses and Dissertations

Metal-organic frameworks (MOFs) are nanoporous materials with a structure and chemistry that can be tailored with precision to support a variety of applications, such as gas storage, drug delivery, catalysis, and sensing. Central to the realization of these applications is the need to model adsorption in MOFs. However, if the goal is to screen a large number of the hundreds of thousands of MOFs discovered, conventional high-throughput molecular simulations are prohibitively demanding in terms of computational resources. Therefore, efficient approaches are required to efficiently identify suitable MOFs for specific applications. In our work, machine learning (ML) models to predict adsorption …

Exploring The Dark And Gothic: An Analysis Of Edgar Allan Poe And Nathaniel Hawthorne’S Gothic Elements In American Literature, Alejandra Serna

Theses and Dissertations

This paper examines the significant contributions of Edgar Allan Poe and Nathaniel Hawthorne to the development of American Gothic literature. Poe’s stories “The Tell-Tale Heart” and “The Black Cat” are renowned for their psychological elements and exploration of the human psyche, while Hawthorne’s “The Birthmark” questions the nature of evil as a universal human experience. By examining the ways in which these authors engage with themes of mental disorders, symbolism, and science versus nature, this thesis explores how such work by Poe and Hawthorne play in shaping the readers' understanding of the darker elements of American Gothic literature and its …

Development Of An Efficient Multi-Objective Approach For Secure Live Virtual Machine Migration, Venkata Subramanian N

Theses and Dissertations

Cloud computing offers organizations flexibility and cost-efficiency through pay-asyou- go services, allowing them to scale resources according to their needs and reduce expenditures. Cloud as a Service (CaaS) offloads IT management complexities, while Cloud Data Center (CDC) provides infrastructure for on-demand, scalable, and flexible services over the Internet. Virtualization improves operational efficiency by providing simultaneous access to multiple virtual machines, while Live Virtual Machine Migration enhances agility, resilience, resource allocation, and fault tolerance.

However, achieving effective VMM requires forecasting cloud resource utilization, selecting the right target host, and ensuring security. Live VM migration is inevitable for optimizing CDC resource utilization. …

Increasing The Robustness Of Machine Learning By Adversarial Attacks, Gourab Mukhopadhyay

Theses and Dissertations

By perturbation or physical attacks any machine can be fooled into predicting something else other than the intended output. There are training data based on which the model is trained to predict unknown things. The objective was to create noises and shades of different levels on the images and do experiments for measuring accuracy and making the model classify the traffic signs. When it comes to adding shades to the pictures, pixels were modified for three different layers of the pictures. The experiment also shows that with the shadows getting deeper, the accuracies drop significantly. Here, some changes in pixels …

Mathematical Concepts And Coding Theory In Kumārasambhavam Of Kālidāsa, Bhuvaneswari K

Theses and Dissertations

Kālidāsa, a renowned Sanskrit poet and playwright from ancient India, is known for his profound understanding and depiction of various aspects of human life, nature, and the universe in his works. While his writings primarily revolve around themes of love, romance, and human emotions, there are several instances where he incorporates mathematical concepts and astronomical references.

His meticulous usage of such abstractions and symbolism adds depth and richness to his poetry. These elements serve as tools to enhance the imagery and aesthetics of his literary works, reflecting the interplay between art and science in ancient Indian culture. These subtle allusions …

The Negative Impacts Of Parentification On Adolescents: A Systematic Review, Reilly Reid Hawkins

Theses and Dissertations

While child abuse, maltreatment, and neglect are clear examples of the most maladaptive types of parent-child interactions (Borchet et al., 2022), there is considerable evidence for the damaging nature of parentification in terms of youth outcomes and parental/familial dysfunction. The research literature contains numerous studies related to parentification, but there is little research overtly demonstrating the systemic effects of parentification (Peris et al., 2008). It is imperative that researchers and clinicians learn more about the mechanisms involved in the parentification process. Therefore, this systematic review analyzed the research literature centered on both parentification and adolescent populations. This study assessed various …

3d Printed Mounts For Liquid Microdroplet Resonators, Parker A. Awerkamp

Theses and Dissertations

Liquid microdroplet resonators provide an excellent tool for optical studies due to their innate smoothness and high quality factors, but they can be difficult to control. By using 3D printed mounts to support the droplets, we can obtain precise control over the droplet geometries and positions. We here present our work with oil, water, and ice microdroplets, as well as tools required to enable their study. We first present methods for creating 3D printed mounts for oil microdroplet resonators. The mounts enable precise positioning of the droplets relative to a tapered optical fiber. The oil microdroplet resonators exhibited quality factors …

Functional & Evolutionary Analysis Of Tbx2a And Tbx2b In Zebrafish Heart Development, Maliha Tasnim

Theses and Dissertations

Congenital Heart Disease (CHD) is the most common birth defect, affecting approximately 1% of live births. This dissertation explores the genetic mechanisms underlying CHD, focusing on the T-box transcription factors Tbx2a and Tbx2b in zebrafish. Utilizing advanced bioinformatics techniques, we reconstructed the ancestral sequences of these genes to understand their evolutionary trajectory and functional divergence. Our analysis highlights the evolutionary conservation of the DNA-binding domain in tbx2a and tbx2b, suggesting its crucial role in maintaining correct gene expression patterns during development. We observed unique and shared amino acid substitutions in these proteins, indicating potential adaptive changes and conserved functions. Comparative …

Striking At The Root: A Categorization Of Dns Clients, Tyler Dean

Theses and Dissertations

The Domain Name System (DNS) root servers have provided a useful look into the DNS and internet ecosystems for decades. We present a categorization of clients querying DNS root servers. Using two clustering algorithms on DNS traffic sampled in 2020, we can predict the structure and volume of queries originating from different types of clients. Previous research has used unsupervised techniques to better understand DNS traffic patterns, but none have, to our knowledge, considered clients beyond those driven by queries from end users. By performing clustering on IP addresses rather than on individual queries, we are able to examine the …

Personalized Driving Using Inverse Reinforcement Learning, Rodrigo J. Gonzalez Salinas

Theses and Dissertations

This thesis introduces an autonomous driving controller designed to replicate individual driving behaviors based on a provided demonstration. The controller employs Inverse Reinforcement Learning (IRL) to formulate the reward function associated with the provided demonstration. IRL is implemented through a dual-feedback loop system. The inner loop utilizes Q-learning, a model-free reinforcement learning technique, to optimize the Hamilton-Jacobi-Bellman (HJB) equation and derive an appropriate control solution. The outer loop leverages this derived control solution to generate parameters for the reward function, which are subsequently integrated into the HJB equation. The ultimate control policy is deduced from the final reward function obtained …

Psychotherapy Utilization And Outcomes Of Military Veteran-College Students And Student-Rotc Members Compared To Similar Nonmilitary College Students, Jacob Michael Christian Goetz

Theses and Dissertations

This study examines current trends of university counseling center (UCC) utilization among Reserve Officer Training Corps (ROTC) students and student-military Veterans, compared to their nonmilitary-minded peers at a large, private, western university. Given likely differences in the lived experiences between these three populations, research is needed to provide insight on the treatment needs of military-minded students. We examine counseling center data for ROTC (n = 88), Veteran (n = 93), and nonmilitary-minded (n = 16,268) students who presented for counseling services from 2014-2021. A matched sample was obtained from the dataset for some of the analyses. The three groups are …

Effects Of Educational Leadership Behaviors And Additional Factors On Teacher Morale, Brittany S. Samaniego

Theses and Dissertations

This quantitative study investigated the impact of leadership behaviors and additional factors on teacher morale across seven schools from three Arkansas school districts. The study utilized the Leadership Practices Inventory (LPI) and Purdue Teacher Opinionaire (PTO) as measurement tools to explore various leadership practices and factors that contributed to or hindered teacher morale. Among the leadership practices assessed by the LPI, Enable Others to Act emerged as the majority of positively influential across the four elementary and middle schools, while Model the Way was favored among the three high schools. These practices underscored their potential to empower teachers and revealed …

High School Sport Participation: Effects On Students' Grit And Resilience, Rory Kekoa-Israel Waldman

Theses and Dissertations

Adolescence is a time of transition, growth, and identity exploration. Often this great time for growth is accompanied with an increase in stressors that can be detrimental to success and health, without the necessary coping mechanisms. It is a period of life where resilience and grit are extremely important. A post-traumatic growth definition for resilience allows for the possibility of a steeling effect, in which the resilience of an adolescent can grow and develop. Sport provides an ideal environment for the development of both grit and resilience by providing a safe environment for adversity to occur without detrimental consequences. In …

Takiri Ake Nga Haeata: Lighting A Path To Increased Indigenous Leadership In Aotearoa, Kaylee Ihimaera

Theses and Dissertations

This thesis addresses the underrepresentation of indigenous Māori people in leadership positions and pursues the need to develop a Māori leadership framework aimed at empowering the next generation of indigenous people. Several frameworks have attempted to exhibit Māori leadership dynamics, each offering unique insights into the cultural and relational aspects of Māori leadership. However, existing frameworks often exhibit limitations in fully encapsulating the breadth of Māori leadership values and practices, necessitating the development of a comprehensive Māori leadership model independent of Western frameworks. Through an extensive review of existing literature and engaging with Māori experts, I synthesized key insights to …

Exploring The Effects Of Delayed Auditory Feedback On Speech Kinematics: A Comparative Analysis Of Monologue Speech And Tongue Twisters, Abbey Corinne Persons

Theses and Dissertations

This study investigated the effects of delayed auditory feedback (DAF) on speech kinematics during tongue twisters and monologues. Participants were 20 adults (10 men, 10 women) aged 18-29 with typical speech and hearing abilities. A smartphone app provided DAF latencies of 50 ms, 100 ms, and 150 ms. Kinematic measures were made of peak speed, stroke distance, and hull area for the tongue front, jaw, and lower lip under typical and the three DAF conditions. Results indicated that DAF significantly reduced peak speed and stroke distance for all articulators during tongue twisters (p < .01), with the effect magnitude increasing with longer delays. No significant DAF effects were observed in monologues (p > .05). Sex differences were noted, with women …

Strong Gelfand Pairs Of Some Finite Groups, Joseph E. Marrow

Theses and Dissertations

Strong Gelfand pairs describe a relation between a group and a subgroup, using a relation between inner products of their characters. We find all strong Gelfand pairs of the dihedral and dicyclic groups, and several of the sporadic groups. We provide some results for the strong Gelfand pairs of the affine linear groups, in addition to the exceptional classical groups $\mathrm{Sp}_4(q)$ for $q$ a power of $2$.

Sex Influences Of Age Of Onset And Duration Of Illness On Patterns Of Cortical Thickness In Individuals With Schizophrenia, Rachael Olivia Slate

Theses and Dissertations

Given that the manifestation of schizophrenia varies by sex, it is hypothesized that the interaction between diagnosis and sex significantly influences brain structure and is believed to be a crucial factor in understanding the neurobiology of schizophrenia. While much is known about cortical thickness mapping of the condition, there is currently no work that has assessed how changes to the cortical mantle relate to important clinical features of schizophrenia that vary by sex, such as age of illness onset (AOO) or duration of illness (DOI). This study utilized a sex-wise approach to examining cortical thickness alterations in men and women …

Documentation Of Norm Negotiation In A Secondary Mathematics Classroom, Michelle R. Bagley

Theses and Dissertations

While previous mathematics education research has shown that norms can change in mathematics classrooms, little research has closely documented the struggles, concessions, and compromises involved in the negotiation process. Negotiating norms is a complex process entailing deliberate teacher moves intended to promote norms, often met with misunderstandings or resistance from students. This thesis documented the negotiation process that occurred when a teacher attempted to require conceptual explanations from students who had not previously been accustomed to doing so. I recorded six days of instruction in a 9th grade algebra unit, transcribed the class discussions, and inferred norms "at play" for …

A Scalable Parallel Processing Design For The Data Washing Machine: An Unsupervised Entity Resolution System, Nicholas Kofi Akortia Hagan

Theses and Dissertations

Entity Resolution (ER) has been one of the bedrocks in the creation of information systems by ensuring ambiguous entities are identified and resolved by linking. One common design approach of traditional ER systems is to run in single-threaded mode, which makes the system prone to out-of-memory error when processing larger datasets. The Data Washing Machine (DWM) as a proof-of-concept of an unsupervised cluster ER system is indifferent from this common design bottleneck. The original prototype design of the DWM requires shared memory tables and dictionaries of tokens, and its single-threaded nature makes it not scalable, hence not viable for real-world …

Labor Music: An Intersectional Analysis, Rebekah Mangels

Theses and Dissertations

Music has long driven labor movements around the world. In instances such as the Gastonia strikes of the 1920s and the United Farm Workers of America’s fight for agricultural workers, labor protest songs have fueled workers to fight for their rights. In this thesis, I note the importance of BIPOC (Black Indigenous People of Color), especially women and nonbinary (and other gender minority) People of Color, in the history of labor protest music. Drawing on intersectional theory, I then analyze eight modern texts, songs by gender minority BIPOC, which reference labor. My thematic analysis demonstrates that my texts converge the …

A Systematic Review Of Implementation Fidelity Interventions For School-Based Behavior Supports In Special Education Settings, Paige C. Mesui

Theses and Dissertations

Problem behavior has been increasing in classrooms and has significantly contributed to teacher burnout. Students in special education settings have been found to demonstrate problem behaviors more than their general education peers. Schools have a responsibility to implement evidence-based behavioral support to assist students with their behavioral needs, decrease problem behavior, and increase desired behavior in the classroom. There is a relationship between the level of implementation fidelity and the effectiveness of an intervention. If there are not high levels of fidelity, the results are not expected to mimic what has been found in the research. The purpose of this …

The Moderating Effect Of Organizational Identification And Supervisor’S Organizational Embodiment On Unethical Pro- Organizational Behavior, Taylor Morgan Flinn

Theses and Dissertations

Unethical pro-organizational behavior (UPB) are behaviors that are illegal/immoral but are engaged in with the intention of benefiting their organization. The present study sought to investigate the moderating relationships of organizational identification (OI) and supervisor’s organizational embodiment (SOE), with work engagement as a predictor. The results revealed that there was a weak correlation between work engagement and UPB as well as SOE and UPB. Both OI and SOE did not moderate the relationship between work engagement and UPB. The current study contributed to the literature on predictors of UPB, as work engagement has rarely been used as a predictor of …

Characterizing And Manipulating Intra-Die Performance Variation Of Fpgas And Its Application In Security, Hayden C. Cook

Theses and Dissertations

Field Programmable Gate Arrays (FPGAs) are reconfigurable, high-performing devices that are often used in critical applications. However, like all semiconductors, FPGAs experience transistor aging that can lower performance and lead to device failures. Additionally, device aging also has several security implications. Therefore, understanding the aging mechanisms behind transistor aging is necessary to ensure the reliability of FPGAs. However, current aging studies either rely on simulation alone or are unable to isolate aging effects on specific elements within the FPGA. This dissertation uses the reconfigurability of FPGAs to develop novel aging techniques that allow for the targeted aging of specific areas …

Facets Of Neuroticism As Predictors Of Heart Rate Variability And Psychological Distress, Mikel Cressman

Theses and Dissertations

Heart rate variability (HRV) and personality are related to both physical and mental health outcomes. Previous research has found a relationship between neuroticism and distress while the findings on the relationship between neuroticism and HRV are mixed. Studying the facets of neuroticism may provide a more nuanced view of the effects of personality on HRV and distress. Previous research has suggested that the vulnerability facet of neuroticism appears to be uniquely related to the cardiovascular response to stress. This study's first hypothesis is that individuals with higher scores on the vulnerability facet will have lower heart rate variability. The second …

Investigating The Fatigue Life Of Asymmetric And Novel Helical Gear Drives, Rajesh S

Theses and Dissertations

The present research work investigates the contact and bending fatigue life of asymmetric helical gear and novel helical gear based on the finite element analysis. In the first phase, the contact and bending fatigue life of the asymmetric helical gear drives is estimated based on the strain life approach.

Further, a parametric study is carried out to investigate the influence of important helical gear parameters such as module, pressure angle, helix angle, gear ratio, teeth number and face width on contact and bending fatigue life of asymmetric helical gear drives. It is noted that the asymmetric helical gear shows a …

From Viral Rumors To Fact-Checked Information: The Influence Of Social Media Platforms And Fact-Checking Organizations On Public Trust During The Covid-19 Crisis, Chinyere Linda Agbasiere

Theses and Dissertations

The COVID-19 pandemic not only disseminated a viral health threat worldwide but highlighted the rapid spread of misinformation, commonly called an "infodemic." This study investigates the influence of social media and fact-checking organizations in shaping public trust and information consumption during the pandemic. Utilizing a mixed-method approach of surveys and interviews, I analyzed 9 interviews. The interviews were analyzed using thematic analysis (Braun & Clarke, 2006) and Owen's (1984) principles of recurrence, repetition, and forcefulness, and three main themes were developed inductively. The findings reveal that while social media was a primary source of information, it also served as a …

Investigation Of Various Mimo Antenna For 5g Mobile Phone Applications, Rajesh Kumar D

Theses and Dissertations

The rapid progress of wireless communication systems has been driven by the persistent demand for higher data rates, improved connectivity, and seamless user experiences. The introduction of fifth-generation (5G) wireless technology introduces fresh challenges and possibilities within the domain of antenna design, particularly concerning Multiple-Input Multiple-Output (MIMO) systems operating in the sub-6 GHz frequency range. This thesis conducts a comprehensive exploration and conceptualization of MIMO antennas expressly crafted for smooth integration into mobile phones, with a particular emphasis on addressing the distinctive requisites of sub-6 GHz 5G communication.

The proposed antenna designs effectively harnesses the advantages inherent in multiple-input multiple-output …

Drop Dynamics And Heat Transfer During Dropwise Condensation On Superhydrophobic Surfaces, Shaur Humayun

Theses and Dissertations

As we seek to address the escalating demand for energy and water, superhydrophobic surfaces have gained the attention of researchers due to their potential to boost condensation heat transfer rates and improve efficiency across various applications. One way to significantly improve dropwise condensation heat transfer rate is to improve drop mobility. Water-repelling properties of superhydrophobic surfaces can help in reducing the size of condensed drops as they depart the surface, thus increasing drop refresh rates by increasing drop mobility. Accurate models of retention forces between drops and superhydrophobic surfaces are needed for predicting drop dynamics including drop mobility. Once drop …

Study On Factors Influencing The Strong Chromatic Index Of Graphs Derived From Path Graphs, Star Graphs, And Cycle Graphs, Vikram St

Theses and Dissertations

Graph coloring is a major research area in Graph Theory that has a rich collection of research articles contributed by mathematicians across the world. This thesis focuses on a specific type of Graph coloring where the edges of a graph are colored by a principle called strong edge-coloring. There have been numerous research articles published on the least number of colors required to define such a coloring for a given graph G. This least number, χ′s (G), is called as the strong chromatic index of a graph G. Though conjectures stated as early as 1989 remain unsolved, there have been …