Digital Commons Network^™

The Effects Of Validating And Invalidating Responses On Self-Reported Levels Of Anxiety, Leila Sachner

Electronic Theses and Dissertations

Given that validation and invalidation have been linked to internal factors contributing to anxiety disorders, it is important to further explore how validation and invalidation are associated with experiences of anxiety. The current study was designed to assess the association between validation/invalidation and anxiety among college students. Significant omnibus regression models emerged revealing that perceived invalidation accounted for 25.7% of the variance in self-reports of physiological anxiety symptoms and 27.6% of the variance in self-reports of generalized anxiety symptoms. A series of mixed-factorial ANOVAs revealed no main effect of experimental condition on emotional responses (anxiety, anger, arousal, valence), indicating that …

Data-Driven Modeling Of Levee Failure: A State-Of-The-Art Approach For Integrating Artificial Intelligence Techniques With Hydraulic Erosion And Geotechnical Characterization, Haitham O. Saleh

Electronic Theses and Dissertations

Flooding is one of the most destructive natural disasters in the United States, often resulting in catastrophic damage to communities and infrastructure. The primary flood-protection structures, earthen dams and levees, are critical for mitigating these impacts. In Mississippi alone, there are over 2,800 dams and 3,750 miles of levees along the Mississippi River and its tributaries. Of this, nearly 2,200 miles are along the mainstem Mississippi River, with the remaining levees situated along backwaters, tributaries, and floodways. Understanding the erosion behavior of these structures during overtopping events is essential for accurate failure prediction and risk assessment. This study focuses on …

Beliefs And Factors That Influence Female College Students’ Decision To Consume Weight Loss Products, Cynthia Ummay Siddiqua

Electronic Theses and Dissertations

Background: Rising societal pressures, body image concerns, and the increasing accessibility of commercial weight loss products (WLPs) have led to heightened use among young women, particularly college students. Female undergraduates are especially vulnerable due to social media influence, peer comparison, and transitioning lifestyles. Despite the popularity of WLPs, concerns persist regarding their safety, efficacy, and the psychosocial beliefs driving their use. This study seeks to understand the beliefs and factors influencing WLP consumption among female college students using Social Cognitive Theory (SCT) and the Health Belief Model (HBM).

Methods: A cross-sectional, exploratory survey was conducted among female undergraduate students aged …

Public Attitudes Toward The Nigerian Police: An Examination Of Trust Indicators At Micro Levels, Bassey Kooffreh

Electronic Theses and Dissertations

This dissertation comprises three studies that collectively contribute to understanding public trust in the Nigerian police. The first study applies three major policing theories namely performance theory, procedural justice theory, and social capital theory to explain the factors that influence trust in the police. The second study offers a comparative analysis of the predictors of public trust in both the police and the courts. The third study examines how individual quality of life, neighborhood structural characteristics, and civic engagement affect public trust in the police. Using nationally representative data from Afrobarometer Round 9, the first study reveals that citizens who …

Dream And Reality: Warping Southern Mythologies, Greta Koshenina

Electronic Theses and Dissertations

Details fade upon waking from dreams, and childhood memories wither over time. My work holds a moment and strips away details. What seems captured is ephemeral. This thesis explores the fleeting nature of memory through a multimedia installation of cyanotype photography and a poetic documentary short film. I blend family videos and photographs with ancient and medieval religious iconography to emphasize art's connection to the unconscious, particularly the archetypes expressed in dreams. The written portion examines the influence, process, and context of my artwork. I delve into these concepts in a review of Southern literature, documentary films, and photography. Oral …

The Prison Life-Course And Correctional Misconduct, Zachary Nathanial Buckner

Electronic Theses and Dissertations

The purpose of this dissertation is to apply a developmental and life-course perspective to the understanding of correctional misconduct for those serving long-term sentences by conducting three separate analyses that examine the development of misconduct over time, and the influence of personal and prison characteristics on misconduct. Data were provided by the Department of Corrections in a Northwestern state in the United States and included all adults in custody who were currently incarcerated and had been incarcerated for a minimum of 15 years consecutively at the point of data collection in March 2023. The first analysis used group-based trajectory modeling …

Distress Tolerance And Links With 24-Hour Ambulatory Blood Pressure, Colter K. Clayton

Electronic Theses and Dissertations

Cardiovascular disease is a leading cause of death in the United States. Hypertension is a major modifiable risk factor for cardiovascular related morbidity and mortality. Psychosocial factors are associated with blood pressure control and preliminary evidence has linked greater distress tolerance to lower blood pressure. The present study examined associations between distress tolerance and key blood pressure markers (24-hour mean blood pressure, nocturnal dipping) among community-dwelling adults (N = 60) using the noninvasive gold standard of blood pressure measurement—ambulatory blood pressure monitoring. Separate hierarchal linear regression analyses did not reveal any significant relationships between distress tolerance and 24-hour mean systolic, …

The Stories Of Land: Exploring Southeast Indigenous Historical Contextualization In University Settings, Haley Elizabeth Mcglone

Electronic Theses and Dissertations

Institutions of Higher Education have a unique opportunity as educational spaces to connect with the land they occupy. As students enter the college environment, institutions have a responsibility to provide them with meaningful connection to land their university is situated upon and educate them in its history. Many institutions of higher education have incorporated important contextualization projects on their campuses in an effort to acknowledge and confront their historic ties to colonization and systemic racism (Ruth J. Simmons Center for the Study of Slavery and Justice, n.d.).

This study offers an environmental scan of two sites of removal now occupied …

Succession Planning And Organizational Structures Of Academic Health Sciences Libraries, Elizabeth Hinton Mcmurphy

Electronic Theses and Dissertations

Academic health sciences libraries are vital in educating and training future healthcare professionals. Over the last decade, a significant number of library directors, many of whom had served in their positions for ten years or more, have retired from the field. The retirement wave in libraries has been anticipated since the late 1980s with the advent of end-user searching. However, due to the aging workforce and the impact of the COVID-19 pandemic, this predicted exodus has become a more imminent reality. Consequently, the intricate organizational structures of academic medical centers and academic health sciences libraries, coupled with the frequent absence …

Voltage-Dependent Anion-Selective Channels 1 And 2 Wild Type And Mutant Bh3-Like Domain Peptides: Analysis Of Secondary Structure And Binding Stoichiometry To Recombinant Bax, Geanell C. Adams

Electronic Theses and Dissertations

Despite national efforts to increase female participation in science, technology, engineering, and mathematics (STEM), women remain significantly underrepresented in collegiate STEM programs. This pilot study sought to identify pre-collegiate factors that influence female students’ decisions to enroll and persist in STEM collegiate programs at the University of Mississippi, a predominantly white R1 research institution using qualitative methods. Grounded in Bandura’s Social Learning Theory, the research examined the environmental, behavioral, and personal determinants that shape academic pathways for women in STEM.

Data were collected through semi-structured interviews with six sophomore female STEM majors. Thematic analysis revealed that early exposure to structured …

Underrepresented Medical Students: Perceptions Of Academic Persistence And Successful Completion Of Medical School, Nicholas Dakota Bibbs

Electronic Theses and Dissertations

Less than one percent of the United States population’s workforce are physicians. The road to becoming a medical doctor is long, complex, and taxing. Individuals desiring to become physicians must have large amounts of grit, persistence, patience, and a hard work ethic just to get to medical school. The students who are accepted into medical school come from various backgrounds with differing degrees of access to resources and opportunities to prepare them before and during their medical education. Studies show that students who are categorized as underrepresented in medicine often face the most challenges to achieving academic success. Understanding what …

Non-Standard Interaction Effects On Neutrino Oscillations In Dune, Ehsan Farooq

Electronic Theses and Dissertations

In this work, we aim to investigate the effects of matter-induced neutrino oscillations and non-standard interactions (NSIs) in long-baseline neutrino experiments, with a focus on long base line neutrino oscillation experiments, the Deep Underground Neutrino Experiment (DUNE) and the Neutrino at Main Injector( NuMI) Off-Axis electron-neutrino Appearance (NOvA) Experiment. Neutrino propagation through matter can be significantly modified by both the standard Mikheyev–Smirnov–Wolfenstein (MSW) effect and possible NSIs, which introduce additional flavor-dependent interactions beyond the Standard Model. We will systematically vary the NSI parameters to study how they enhance or suppress the neutrino oscillation probabilities, particularly for appearance and disappearance channels. …

An Advanced Machine Learning Framework And Multi-Label Heart Disease Classification With Unet-Based Nucleus Segmentation, Md Rahat Kader Khan

Electronic Theses and Dissertations

The growing demand for accurate, rapid, and interpretable diagnostic tools in the medical field has spurred the integration of artificial intelligence into various healthcare applications. Acute Myocardial Infarction, which remains one of the primary causes of mortality in both developed and developing nations, requires timely and precise identification to prevent life-threatening complications. In response to the lack of interpretable AI models tailored to diagnosing AMI using hemogram parameters, this study presents a robust machine learning-based framework that explores the diagnostic potential of these parameters. By evaluating several machine learning techniques, the research establishes the superiority of boosting algorithms, particularly the …

The Influence Of Pressure, Intensity, And Amount Of Muscle Mass Exercised On Changes In Muscle Size, Strength, And Endurance: A Methodological Investigation, Ryo Kataoka

Electronic Theses and Dissertations

Purpose: To 1) examine the effects of low-load submaximal resistance exercise with blood flow restriction (BFR) on muscle size, strength, cross-education, and local muscular endurance while accounting for proximity to failure under restriction, and 2) determine whether changes in muscle size and strength differ based on the amount of muscle recruited during the exercise bout.

Methods: A total of 177 (18–35 years) participants were randomly assigned to one of five groups: unilateral low-load submaximal elbow flexion exercise 1) with BFR (LL+BFR, n=35), 2) without BFR (i.e., matched for a % of repetition-to-failure under restriction) (LL, n=37), 3) to failure (LL-Failure, …

Positive Behavior Supports To Minimize The Placement Of Students Into Disciplinary Alternative Classrooms, Valarie Buford

Electronic Theses and Dissertations

This dissertation consists of four manuscripts to explore implementations of positive behavior supports to minimize the placement of students into disciplinary alternative classrooms. Manuscript 1, sheds light on the ideas of teaching practices which reflect that teachers are often unprepared for student behaviors in their classroom which leads to traditional forms of discipline. These disciplines negatively impact African American male students disproportionately higher than their peers.

Manuscript 2, the Literature Review indicates that disproportionate discipline occurs due to exclusionary practices, implicit bias, lack of cultural knowledge, and lack of implementations to provide positive behavior support. The researcher found it relevant …

Synthesis And Characterization Of Agmatine Based Carbon Dots, Suyasha Sharad Chaudhari

Electronic Theses and Dissertations

In this study, carbon dots (CDs) were synthesized from agmatine sulfate, a bioactive molecule with nitrogen-rich moiety guanidine, and citric acid, a commonly used carbon source with oxygen-rich functional groups, at controlled temperatures of 180, 200, and 220°C, as well as CDs of agmatine only at 220°C using a hydrothermal method. The synthesized CDs were characterized for its optical properties, using UV–Vis, Fluorescence, chemical properties using, Fourier transform infrared (FT-IR) spectrophotometry, structural properties using Transmission electron microscopy (TEM) and for surface charge evaluation ζ-potential was measured. UV-Visible spectra confirmed CD formation through characteristic sp² hybridization bands. The synthesized CDs exhibited …

Framed By Education: Labeling, Stigma, And The Behavioral Pathways Of Alternative School Students, Abigail Dempsey

Electronic Theses and Dissertations

Alternative education has emerged as a critical part of the education system, addressing the needs of students who face academic, behavioral, or personal challenges. However, concerns persist about their long-term effectiveness and the stigma associated with alternative school placements. This study examines how stigma tied to alternative school placements impacts delinquency outcomes among adolescents, utilizing labeling theory as a conceptual framework. Drawing on longitudinal data from the Pathways to Desistance dataset, this research explores the relationships between school placement, self-perception of success, and delinquent behaviors. It also serves to investigate whether labeling of an alternative school placement creates a self-fulfilling …

Mental Health Literacy: What’S The Value Of Youth Engagement In Intervention Development?, Teresa Johnson

Electronic Theses and Dissertations

Background: One in five youth experience a mental health challenge each year (CDC, 2021). Mental Health Literacy (MHL) is vital for addressing this crisis as it involves the knowledge, attitudes, and skills necessary to promote mental well-being, understand mental health conditions, and seek appropriate help. MHL interventions for adolescents have been developed; however, recent reviews indicate research is needed in school settings with community input. Youth Participatory Action Research (YPAR) places youth as co-researchers in intervention development. This methodology aligns with Bartholomew’s Intervention Mapping (IM) framework, which ensures interventions are theoretically grounded. Utilizing these two frameworks, this study aimed to …

Salinity Tolerance Of Bighead Carp And Its Implications For Dispersal In The Lake Pontchartrain Ecosystem, Alan Katzenmeyer

Electronic Theses and Dissertations

The introduction of invasive bighead carp (Hypophthalmichthys nobilis) into the Pearl and Pascagoula River systems via the Bonnet Carré Spillway during flood control operations poses a significant threat to these unique ecosystems. This dissertation's experiments investigated the role of salinity in limiting bighead carp dispersal, demonstrating that brackish waters do not necessarily restrict their range as previously assumed. While bighead carp exhibited no significant impairment in swimming performance in salinities at or below 5 ppt, acute and chronic exposure to salinities at 15 ppt proved lethal within 50 hours, representing a critical salinity threshold. Despite mortality at elevated salinities, the …

Motivating Students To Read, Lashonda Renee' Johnson

Electronic Theses and Dissertations

This applied research study was conducted to motivate third-grade students to increase the amount of time that they read each day at school and at home to support further the passage of the Third-Grade Summative Assessment. In the study, I examined the implementation of the Accelerated Reader Program to establish student reading goals and to enhance the school’s reading culture. I used teacher interviews, teacher surveys, and parent surveys in this study. The findings revealed that students who passed the Mississippi Third-Grade Summative Assessment increased their reading proficiency. A positive impact was made on the students’ reading proficiency, attitudes, motivation, …

Opportunity Restored: Using Creative Measures To Provide Students With Academic Advancement Opportunities Lost During Covid-19, Randal Clint Jordan

Electronic Theses and Dissertations

This mixed-methods action research study examines the Fast Track and Graduation Path (FTGP) programs—equity-focused interventions developed to offer opportunity to students who experienced academic disruption during COVID-19 emergency schooling (Creswell & Plano Clark, 2018). The programs targeted students retained due to socioeconomic status, learned helplessness, or the technology learning gap, rather than a lack of ability or low prior performance (Jenson, 2013; Maier & Seligman, 1976; Bower, 2019). FTGP provided structured academic pathways, daily facilitation, technology-based instruction, and character education to rebuild learner confidence and achievement (Reimer & Hill, 2022).

Quantitative data from the Edgenuity© learning platform revealed the program’s …

Optimizing Infill Density For Fabricating Novel Radio Frequency Devices Utilizing Additive Manufacturing, Bibek Kattel

Electronic Theses and Dissertations

Additive manufacturing, commonly known as 3D printing, is revolutionizing radio frequency engineering. Along with rapid prototyping and fabricating complex structures, it enables varying substrate thickness and dielectric properties, which are highly beneficial for radio frequency research. However, despite its growing popularity, there’s a gap in understanding how 3D printing process parameters affect the electrical properties of the 3D printed structure. In radio frequency design, where device performance and characteristics heavily depend on electrical parameters such as relative permittivity, this hinders the consistency, repeatability, and reliability of 3D printed radio frequency devices.

This research addressed this gap by investigating the relationship …

Purple To Powder Blue: Exploring Interactions Between Military-Connected Students With Disabilities And Student Services At The University Of Mississippi, Maura Mollet-Hobbs

Electronic Theses and Dissertations

This dissertation explores the interactions between military-connected students with disabilities (MCS/D) and student services at the University of Mississippi. As the population of MCSs in higher education continues to grow, partly due to expanded federal education benefits like the Forever GI Bill, a subset of these students face challenges related to their disabilities. This study focuses on MCS/Ds and examines how institutional support and policies intersect with their complex identities.

The research employs a mixed-methods approach to investigate how MCS/Ds interact with student services at the University of Mississippi, considering the intersection of their military connection and disability status. By …

Storytelling In Context: How Resources Enable And Constrain The Stories Entrepreneurs Tell, John J. Rogers

Electronic Theses and Dissertations

This dissertation investigates how entrepreneurial storytelling is shaped by and shapes its material and cultural context, extending the Theory of Cultural Entrepreneurship (TOCE). While TOCE highlights storytelling as a mechanism through which entrepreneurs construct legitimacy and secure resources by drawing on culturally resonant narratives, prior research has largely overlooked the constraining and enabling role of material resources in this process. This dissertation addresses this gap by examining how context functions, not merely as a backdrop but as a constitutive force in entrepreneurial storytelling. Using ethnographic methods, two studies were conducted at a regenerative farm and processing facility in rural Mississippi. …

The Characterization Of Radiation Forces Using Tunable Acoustic Lenses, Sina Rostami

Electronic Theses and Dissertations

This dissertation investigates the design, analysis, and optimization of tunable acoustic lenses with a primary focus on beamforming, dynamic focusing, and the generation of limited diffraction beams. The study examines the performance of four-channel and six-channel lenses in producing highly controlled ultrasonic fields with minimal diffraction. Numerical simulations and experimental validation are used to demonstrate how these lenses effectively form focused beams that maintain spatial coherence over a range of distances.

A systematic comparison between the four-channel and six-channel lenses is performed at multiple focal configurations (5.5 cm, 7.8 cm, and 10.0 cm). The results show that both lens types …

An Evaluation Of A Collaborative Effort In High School Science Classes To Support Teaching And Learning Through Professional Development, Shalanda Saulsberry

Electronic Theses and Dissertations

The purpose of this study was to improve high school teachers’ instructional practices through professional learning. This applied research study, using program evaluation, sought to improve science instruction in building their capacity through instructional practices. Faculty interest was created from reviewing various school and district data sources, observing the practices of science teachers, and having informal conversations with students about learning. Although professional development was provided in the past, there was a need for content-specific science professional learning to change teachers’ instructional practices. Through targeted professional development sessions, as well as observation and feedback, there was a goal of increasing …

Maximum Likelihood Estimation For Partially Observed Markov Model Using Different Tail Perturbations, Zamzam Qazi

Electronic Theses and Dissertations

This work is about parameter estimation of POMP models using the two-time scale Iterated Filtering algorithms with p-generalized Gaussian perturbations. The algorithms are effective for estimating numerous types of infectious disease models such as COVID-19, influenza or various other diseases. First, we introduce the generalization of Stein’s identity for normal distribution to p-generalized Gaussian distribution, which enables more flexible perturbation with different tail behaviors. Then, we provide proofs and verify their authenticity by applying them in black box optimization as well as optimization of multivariate state space models. Also, we propose a novel weighted average algorithm for maximizing likelihood through …

Microgravity-Induced Effects On Global Gene Fitness And Secondary Metabolite Yield In Bacteria, Gayatri Sharma

Electronic Theses and Dissertations

Bacteria are ubiquitous and capable of colonizing nearly any environment, including extreme conditions such as deep oceans, high altitudes, and even space-faring vehicles. These vehicles present unique stresses not found on Earth such as microgravity and radiation. As space exploration advances, understanding how microgravity affects bacterial life has become increasingly important. Over the past 60 years, studies using both real and simulated microgravity have revealed species-specific responses, collectively indicating broad changes in bacterial function and physiological adaptations.

Initially, this study examined Novosphingobium aromaticivorans, a lignin-degrading bacterium detected in spacecraft cleanroom environments by assessing gene fitness during growth in microgravity on …

A Study Of The Ultrasonic Properties Of Dispersive Materials, Farhana Afrose Sonia

Electronic Theses and Dissertations

This research investigates the ultrasonic behavior of nanocomposite and polymer materials by evaluating the phase velocity and attenuation coefficient of 20% multi-walled carbon nanotube (MWCNT) reinforced composites and nylon. The primary goal of the work is to study longitudinal and shear wave propagation in both composite and homogeneous media. To achieve this, I used thru transmission techniques to collect data at multiple incident angles, including 0°, 30°, 35°, and 40° relative to the transmitting transducer.

I analyzed the acquired ultrasonic signals using both time-domain and frequency-domain techniques. In the time-domain approach, I measured the peak-to-peak time delay from gated waveforms …

1:1 Ipad Implementation & Standardized Testing, Kristen Lane Whitehead Zemek

Electronic Theses and Dissertations

This study investigates the relationship between 1:1 iPad implementation and student performance on the Mississippi Academic Assessment Program (MAAP) standardized tests. As school districts increasingly adopt 1:1 technology initiatives, it is critical to understand their impact on key academic outcomes. This research examines the extent to which the consistent use of iPads in the learning environment influences student achievement in core subjects. By analyzing test score data from schools with established 1:1 iPad programs, this paper seeks to provide empirical evidence to inform educational stakeholders, administrators, and policymakers. The findings aim to contribute to the broader discourse on technology integration …