Digital Commons Network^™

A Mother And Social Worker Is Born, Gabrielle Jorns

Graduate Student Portfolios, Professional Papers, and Capstone Projects

Narrative describing the social work competencies that helped shape a social worker with an interest in maternal health.

Barriers To Hispanic Post-Secondary Education In Science Fields, Luis Slayton

Theses and Dissertations

The study aimed to examine whether external barriers could be identified and are present throughout a Hispanic individual's educational life. The beliefs of the Hispanic community regarding education and the nature of acquiring an education could be relevant to the factors that impede the completion of high school. A survey approach was chosen as the methodology for the study due to the confidential nature of a questionnaire. Human nature tends to be more honest when not asked personal questions face-to-face. Additionally, there is potential to generalize attributes from a small sample to a larger population, allowing inferences about the identified …

Examining The Relationship Between Teaching Presence In The Community Of Inquiry Framework And Student Satisfaction In Online Graduate Educational Technology Courses, Vianna Madrid

Theses and Dissertations

The Community of Inquiry (CoI) Framework, comprising three key elements, social presence, cognitive presence, and teaching presence, provides a theoretical foundation for understanding how students engage with and perceive their online learning environments. Among these elements, teaching presence, encompassing course design and organization, facilitation of discourse, and direct instruction, plays a fundamental role in shaping students’ perceptions of instructional clarity, support, and overall satisfaction. This quantitative study, grounded in the CoI model, examines the relationship between the categories of teaching presence and student satisfaction among graduate students enrolled in online Educational Technology courses. Accordingly, a survey instrument incorporating the CoI …

Job Satisfaction And Vocational Services In Persons With Acquired Brain Injury, Claudia Eliza Gonzalez

Theses and Dissertations

The incidence of acquired brain injuries continues to rise world-wide resulting in increased disability status and national costs related to these injuries (Ahonle et al., 2020; BIAA, 2024; CDC, 2003; CDC, 2015; CDC, 2023; Grigorovich, et al., 2017; Tyerman et al., 2017). Long-term health effects associated with acquired brain injuries have social and environmental impacts that influence the individual with the injury beyond acute treatment and rehabilitation (Ahonle et al., 2020; CDC, 2023; Frieden et al., 2015; Grigorovich, et al., 2017; Tyerman et al., 2017). This, in turn, affects employment as many individuals with brain injuries are unable to return …

Exploring Intra- And Interpersonal Connection Through Mindful Moments At A Hispanic-Serving Institution, Yvette Angeline

Theses and Dissertations

The demands of contemporary education have contributed to high levels of stress, anxiety, and burnout among educators (Barton, 2019; Hidajat et al., 2023; Walker, 2022), uncovering a need for pedagogical approaches that prioritize holistic well-being and humanize the learning experience (Palmer, 2009; Salazar, 2013; Wong & Mishra, 2020). This qualitative case study investigates how moments of mindfulness, integrated as curricular practice within a teacher education program at a Hispanic-Serving Institution (HSI), nurtures pre-service teachers’ awareness of the self and world. This study explores aspects of mindfulness from its Eastern origins (Thich Nhat Hanh, 1975) and its Western secular applications (Jon …

Social Participation And Health-Related Quality Of Life For Adults With Neurodevelopmental Disabilities: Capabilities Mediation And Employment Status And Social Security Disability Insurance Moderation, Kayi Ntinda

Theses and Dissertations

Social participation is a key determinant of health-related quality of life (HRQoL) of adults with neurodevelopmental disabilities (NDDs), yet how individuals with NDDs engage socially to support their HRQoL remains poorly understood. Furthermore, the influences of personal capabilities, employment status, and Social Security Disability Insurance (SSDI) as social factors for well-being are underexplored with this population.

This cross-sectional study investigated the direct and indirect effects of social participation on HRQoL, examining capabilities as a mediator and employment status and SSDI receipt as moderators. The study sample comprised 304 adults with NDDs (females = 83.3%; age range 18 to 60 years …

Assessment Of Floral Resources From Three Tamaulipan Thornscrub Communities Of The Lower Rio Grande Valley, Gracie Makenna Granados

Theses and Dissertations

The Tamaulipan thornscrub is a transition zone between the neotropics and the temperate regions, harboring high biodiversity. This habitat supports a diverse insect community, including many pollinators of native and cultivated plants in Texas and northeastern Mexico. This ecosystem has been extensively degraded and lost; only 5% of its original cover remains north of the Rio Grande. Restoration of the Tamaulipan thornscrub has been ongoing for over three decades, but the important roles of pollinators in the success of such efforts and the functioning of the restored ecosystem have rarely been considered in restoration efforts. The purpose of this study …

Occupational Therapy Educators’ Perceptions Of Preparedness To Teach Students Culturally Responsive Care For Diverse Patient Populations, Jack Ruelas

Theses and Dissertations

This phenomenological investigation examined occupational therapy faculty preparedness for teaching culturally responsive care to entry-level doctorate students in Texas. Despite Accreditation Council for Occupational Therapy Education (ACOTE) mandates requiring cultural competence education, significant gaps persist between regulatory requirements and faculty readiness to deliver such instruction effectively. The study explored three interrelated dimensions: (1) faculty perceptions of their preparedness to teach cultural competence, (2) institutional training and support mechanisms, and (3) pedagogical integration strategies for culturally responsive content.

Employing interpretive phenomenology grounded in Freire's critical pedagogy and Iwama's Kawa Model, this investigation utilized a two-phase data collection methodology with eleven faculty …

Development Of A Wearable Biosensor For Cortisol Detection In Human Sweat Utilizing Pani/Peo Polymer Blend And Nitrogen-Doped Graphene Quantum Dots, Cesar Sanchez

Theses and Dissertations

Since the development of the first biosensor in 1962, the evolution of commercially available wearable biosensors has been driven by an increasing consumer interest in real-time health tracking. However, challenges related to sensor sensitivity and cost have hindered progress. Deploying a novel approach, the biosensor integrates a blend of Polyaniline (PANi) and Polyethylene Oxide (PEO) along with Nitrogen-doped Graphene Quantum Dots (N-GQDs) to enhance sensitivity and electroactivity, crucial for cortisol detection. To optimize performance, three distinct synthesis methods for N-GQDs; hydrothermal, microwave, and hot plate synthesis were compared employing a bottom-up approach utilizing citric acid (CA) as the primary reactant …

Low-Dimensional Learning For Remaining Useful Life Prediction Of Batteries Operating Under Various Environments, Rodrigo Benavides

Theses and Dissertations

In reliability, we typically define the standard operating conditions under which a component operates. However, the differences in battery operating conditions cause variability in the degradation patterns of identically manufactured batteries, rendering remaining useful life prediction a major challenge. To aid this task, several sensors are utilized to monitor battery state-of-health. However, traditional prognostics algorithms do not scale well to the volume of data generated. Furthermore, several authors do not explicitly consider operating environments in their prediction models. Therefore, we present a high-dimensional data analytics framework that integrates operating environment information for battery prognostics. This framework combines Multilinear Principal Component …

Multi-Theoretic Perspective Of Backer Decision-Making In Crowdfunding: Interplay Of Backer, Founder And Ai, Maliha Alam

Theses and Dissertations

Crowdfunding has become a transformative mechanism for financing innovation, connecting creators directly with backers while bypassing traditional funding barriers. Despite its rapid global growth, only about 33.7% of campaigns succeed, largely due to ineffective communication of value propositions and lack of backer engagement. This dissertation investigates the complex interplay between project founders, backers, and emerging AI technologies to understand the factors influencing donation intention and to enhance crowdfunding success prediction.

Adopting the behavioral decision-making framework, I draw on multiple theoretical perspectives- signaling theory, the dual-process model of persuasion, and the cognitive-affective trust framework to examine founder- backer interactions. Using a …

The Impact Of Positive Psychology Use Upon Gls Outcomes For People With Chronic Pain Syndromes, Timothy Michael Curtis

Theses and Dissertations

The essence of being human is realized by our discovery of meaningful purpose throughout each important stage of our lives. If we perceive that we lack this meaningful purpose in our lives, it could become a distressful source of suffering to our sense of well-being emotionally, cognitively and perhaps, spiritually. A strong indicator of well-being comes from a good evaluation we ascertain as to how well we believe outcomes in our lives are consistent with our goals and values, which is also known as satisfaction with life. Research findings indicate that the more someone experiences repeated negative life events, the …

Arginine Vasotocin And Corticosterone In Nesting And Non-Nesting Loggerhead Sea Turtles In X’Cacel-X’Cacelito Sanctuary, Krista Blair Reed

Theses and Dissertations

Sea turtles exhibit distinct behaviors before and after egg laying, however, not all individuals successfully oviposit. Some females display disruptions in their typical nesting behavior, returning to the water without laying eggs, which is referred to as a non-nesting emergence (NNE). NNEs can be due to external disturbances on the beach, but why they occur is often unclear. Arginine vasotocin (AVT) is a neuropeptide involved in various physiological processes, including stimulating smooth muscle contraction of the oviduct to facilitate egg deposition in nesting sea turtles. On the other hand, corticosterone is the primary stress hormone in sea turtles and is …

Biological, Histological, And Immunohistochemical Responses To Heat Stress In Common Goldfish, Carassius Auratus, Ngozichukwu Francis Ngozichukwu

Theses and Dissertations

Global climate change has led to rising temperatures, posing significant challenges to aquatic ecosystems and the health of ectothermic species such as goldfish (Carassius auratus) This thesis investigated the effects of heat stress on growth performance, histological alterations, and molecular stress responses in the gill and kidney tissues of goldfish Fish were exposed to control (24°C), medium (28°C), and high (32°C) temperatures for two weeks Growth parameters, including instantaneous growth rate (IGR), absolute growth rate (AGR), body value gain (BVG), and condition factor, were evaluated alongside histological and immunohistochemical markers of stress Results revealed that high temperature significantly reduced AGR …

Analyzing How Taste And Nutrition Impact Learning And Memory In Honey Bees Through Olfactory Associative Conditioning, Alessandra Elizabeth Perry

Theses and Dissertations

Honey bees detect sweet nectar, but not all sweet-tasting sugars provide nutrition. Unlike fruit flies, which can learn to avoid non-nutritious sweet foods, bees may lack this ability. To test if bees form caloric frustration memory (CFM), we conditioned them using odors paired with L-glucose (sweet but non-nutritious) or D-glucose (sweet and nutritious). Bees rewarded with L-glucose showed lower learning and long-term memory compared to D-glucose. Bees cannot differentiate between an odor associated with rewards containing malaise-causing compounds and an odor associated with a reward alone during differential conditioning. Therefore, we used differential conditioning to determine if lower acquisition in …

Transcriptomic Study On The Effect Of Salt Stress In Sorghum Bicolor Seedlings, Joshwa A. Gandy

Theses and Dissertations

The global impact and reliance on cereal crops, and sorghum in particular, is paramount for worldwide food security and for the livelihood of hundreds of millions of people. The detrimental effects of salt stress on crop plants and the huge economic losses it causes by affecting agricultural output worldwide is a devastating issue with huge impacts, which have prompted research to combat salinity in numerous ways. Understanding how cereals respond to the negative effects of salt stress is crucial for enhancing their salt tolerance. In this study of sorghum, we used a 3’-end RNA sequencing approach to elucidate major salt …

Interdigitated Gear-Shaped Screen-Printed Electrode Using G-Pani Ink For Sensitive Electrochemical Detection Of Stress Related Hormones Dopamine And Cortisol, Pritu Parna Sarkar

Theses and Dissertations

This research introduces a novel interdigitated gear-shaped graphene-based electrochemical biosensor for the simultaneous detection of dopamine (DA) and cortisol. Modified with graphene–polyaniline (G–PANI) conductive ink, the sensor increased active surface area—94.52% and 57% higher than Metrohm DropSens 110 and circular printed sensors, respectively. Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) Spectroscopy and X-ray diffraction (XRD) were employed for physicochemical characterization. The sensor detects dopamine and cortisol over a linear range of 0.1–100 µM, with limits of detection of 0.043 µM (R² = 0.98) and 0.0577 µg/mL (R² = 0.976), respectively, in phosphate-buffered saline (PBS) using redox probe. Electrochemical performance …

Chronic Lower Extremity Anomalies: Impact Of Diabetic Induced Foot Amputations On Human Locomotion, Anthony Arnoldo Melgar

Theses and Dissertations

This research aims to understand the physiological changes that the human body undergoes post partial foot amputation (PFA). A total of three studies were conducted to fully comprehend biomechanical changes and adjustments that occur during locomotion for affected individuals. The first study of this thesis focuses on obtaining kinematic data for both the ankle joint angle and ankle joint torque for the healthy population, as well as for the affected PFA population. Results were compared, and notable differences were present between the two. The second study of this thesis dealt with individual muscle forces. To obtain the muscle force data, …

Low-Cost Monitoring And Fingerprinting Of High-Powered Electric Systems, Kwabena Buamono Aboagye-Otchere

Theses and Dissertations

Electric motors are vital to industry, transport, and energy, yet their maintenance challenges persist. While traditional reactive maintenance leads to costly downtime and safety risks, predictive maintenance, especially through IoT and machine learning offers early fault detection and operational efficiency. However, this shift introduces security concerns due to unintended magnetic emissions from motors. These emissions, though useful for non-intrusive monitoring, can be exploited to eavesdrop on sensitive industrial processes. This dissertation explores the dual nature of magnetic emissions: their value in motor diagnostics and their potential as a security vulnerability. It demonstrates how emissions can identify motors, monitor health, and …

Comparison Of Recovery Methods After Resistance Exercise For Power Performance, Isaac D. Huerta

Theses and Dissertations

Elite athletes engage in intense training to secure marginal performance advantages, placing considerable physical strain on their bodies. Effective recovery techniques are critical to rapidly restore physical function. Conventional methods like ice baths, hydrotherapy, and massages are often impractical due to cost and logistical barriers. This study examined the efficacy of voluntary deep slow breathing (VDSB) as a cost-effective recovery method compared to static stretching (SS) and no recovery method (control) in untrained male athletes aged 18–26. Using a within-subjects, randomized crossover design over four weeks, participants visited the lab seven times to complete a standardized full-body workout involving plyometric …

Phenotypic Plasticity In Response To Abiotic Factors In Silverleaf Nightshade (Solanum Elaeagnifolium), And The Effectiveness Of North American Lacebug (Gargaphia Arizonica Drake And Calvo) As A Biocontrol, Marco Andre Silguero

Theses and Dissertations

Silverleaf nightshade (Solanum elaeagnifolium) is a widespread invasive weed in South Texas and other arid regions, where it reduces crop productivity, competes with native vegetation, and resists conventional control methods. Its ability to thrive across different environments is linked to phenotypic plasticity, allowing it to adjust growth and physiology in response to light and water availability. In this thesis, I examine the role of plasticity in S. elaeagnifolium under field conditions and evaluate the potential of the North American lacebug (Gargaphia arizonica) as a biological control agent. Field observations were used to measure plant traits such as height, stem thickness, …

Investigating The Multiple Enzyme Complex In The Carotenoid Biosynthesis Pathway, Mercy Mormor

Electronic Theses and Dissertations

In nature, plant carotenoids are 40-carbon isoprenoids with polyene chains that may have double bonds. They are vital components of all photosynthetic organisms, playing several roles in the plant cell, including photosynthesis, pigmentation, phytohormone synthesis, signaling and photoprotection. In this study, we investigated protein-protein interactions among key enzymes involved in the carotenoid biosynthesis pathway using the Bimolecular Fluorescent Complementation (BiFC) assay. Our results revealed several interactions that suggest a coordinated regulation of enzymatic activity within this pathway, highlighting potential regulatory complexes that influence carotenoid production. The study also highlights the pivotal role of Zeta-Carotene Isomerase (Z-ISO) as a key regulatory …

Examining The Lived Experiences Of International Students At East Tennessee State University, John The Baptist Anodjo

Electronic Theses and Dissertations

This research investigates the lived experiences of international students at East Tennessee State University (ETSU), specifically examining how they navigate social, academic, and structural challenges. Through in-depth interviews with 20 international students from a variety of nationalities, I analyzed issues related to legal status, housing, food insecurity, healthcare, and social integration. I found that students encounter barriers due to immigration policies, financial constraints, and limited access to essential resources. Additionally, international students benefit significantly from support provided by campus services, community organizations, and their social networks, which play a vital role in their adjustment process. While institutional resources are beneficial …

Cattle Regenerative Grazing Effects On Bat Activity In Southern Appalachia, Seth Morelock

Electronic Theses and Dissertations

Livestock farming accounts for about 70% of agricultural activity, with continuous grazing as the dominant conventional practice. However, this method often degrades biodiversity and ecosystem health through overgrazing. Regenerative grazing practices offer a potential ecologically sustainable approach to cattle management. Insectivorous bats are known to use agroecosystems for foraging and roosting habitats, offering an opportunity to assess their response to regenerative grazing. Using passive acoustic monitors, we evaluated the response of bats to cattle within regenerative grazed farms in East Tennessee, USA. Overall bat activity declined when cattle entered and exited paddocks, except for the tri-colored bat (Perimyotis subflavus …

Performance And Feasibility Of Pasture Rangeland And Forage Insurance In The Delta Region, Walker Bradley Davis

Graduate Theses and Dissertations

Despite being available nationwide since 2016, enrollment in Pasture, Rangeland, and Forage (PRF) insurance remains low in many regions of the country. The program's performance also presents regional discrepancies, with loss ratios varying significantly. Studies that have simplified the complexity of interval selection for producers have been shown to positively affect PRF enrollment. Such studies remain limited in several forage-producing areas. This study aims to address the lack of information in Arkansas specifically. Arkansas has among the nation's lowest participation rates and loss ratios. Low loss ratios signal that participants pay more in premiums than received in indemnities and may …

Theorizing With Purpose: A Five-Step Approach To Motivate And Guide Students In Communication Theory Courses, Weixu Lu

Journal of Communication Pedagogy

This study addresses the challenges of effectively teaching communication theories to undergraduate students by highlighting the gap between the need for developing higher-order, transferrable knowledge and the learning needs of novice learners. To bridge this gap, it introduces a novel five-step model integrating motivation, direct instruction, revisiting, assessing, and invention steps into the teaching process. Assessment results from two semesters were compared to evaluate the efficacy of this model, showing significant improvements in students’ comprehension of communication theories, ability to theorize communication phenomena, and proficiency in formulating research questions based on theoretical insights. These findings suggest the potential of the …

Rigor And Academic (Re)Socialization: The Faculty Role In Student Success Curriculum, Kendra Knight, Stephanie Grau, Elissa Foster, Jay Baglia

Journal of Communication Pedagogy

In the post-pandemic learning era, communication faculty experience tensions among expectations for flexibility, sensitivity to students’ well-being, and our commitment to the academic rigor of our courses. These tensions, we argue, may be resolved through offering academic (re)socialization as a stand-alone element of the communication curriculum. This essay explicates the development and implementation of a for-credit workshop-style course aimed at bridging gaps in student academic capital laid bare by the COVID-19 learning crisis. “Communication Fundamentals for College Success” is a collaborative effort among six communication instructors to support practical and socio-emotional skills that undergird students’ transdisciplinary intellectual growth. We reflect …

If It Walks Like A Duck: Self-Identification, Definition, And Experiences Of Non-Traditional Doctoral Students In The Communication Discipline, Laura C. Bruns, Sara V.A. Kaufman, Ana Lisa Padron Eberline, Meredith L. Pruden, Erin Perry, Elise P. Taylor, Deborah J. Danuser

Journal of Communication Pedagogy

This study aimed to understand experiences of nontraditional doctoral students pursuing their PhD in Communication. Although the term “nontraditional student” exists in the literature (Cox & Ebbers, 2010; Stone & O’Shea, 2019), there is little consensus about demographics of nontraditional doctoral students (NTDS), nor their experiences navigating these programs. Using qualitative, thematic analysis of survey responses (n = 52), this critical mixed-method study found three themes— age, experience, and education gap—as defining identity factors, barriers, and benefits. Participants described themselves as nontraditional due to different lived experiences from graduate peers, resulting in feelings of “Otherness” within their programs. These findings …

Climate Change Denial Messages As Post-Truth, David H. Kahl Jr., Ahmet Atay

Journal of Communication Pedagogy

Post-truth messages are hegemonic forms of communication intentionally designed to create false narratives that perpetuate power and marginalize others. These messages make differentiating fact from fiction difficult. Students are especially susceptible to believing and internalizing post-truth messages due to their high level of interaction with social media and the neoliberal period in which they have been raised. One type of post-truth message that has become especially prevalent is climate change denial messages that advance a neoliberal agenda. This article will apply tenets of critical communication pedagogy (CCP) as a means by which to recognize messages that deny climate change as …

Rethinking The Reach Of The Basic Course: Diversity And Interdisciplinarity As Catalysts For Reinvigorating The Foundations Of The Discipline, Narissra Maria Punyanunt-Carter, Sydney E. Brammer, Ryan J. Martinez

Journal of Communication Pedagogy

Communication scholars have significantly advanced knowledge across various subjects and in basic course classrooms, yet face obstacles in conveying their importance to students and wider communities. Challenges like COVID-19 disruptions, inadequate teacher pipelines, and limited diversity in education hinder interdisciplinary communication, leading to insufficient funding and support. Neglecting diversity perpetuates systemic inequalities, limiting perspectives in syllabuses. Advocating for inclusivity and exploring practical implications of communication, such as organizational communication and societal engagement, enhances the field’s value. Prioritizing research with theoretical and practical implications, particularly in diversity, equity, and inclusion, empowers marginalized voices and promotes understanding. Embracing these efforts ensures communication …