Digital Commons Network^™

Investigating The Antibacterial Properties Of Nanostructured Aluminum Surface, Quinshell Smith

Theses and Dissertations

Bacterial infections are a major public health concern. Bacterial infection can occur in any part of the body and can also cause the body to respond to its presence. Bacteria can be transferred to humans through water, food, air, and living vectors. The modes of transmission for bacterial infections are vectors, airborne, physical contact, and droplets. Current preventative measures have been put in place to combat this issue. These preventative measures include immunization of both animals and humans, personal hygiene measures, biocidal agents, and essential oils. Bacterial resistance has occurred due to these preventative measures being misused and overused. Bacteria …

Hormetic Modulation Of On Mtor Mitochondria Cross Talk For Mitigation Of Cellular Aging, Mahalakshmi R

Theses and Dissertations

Cellular aging is a gradual process involving structural and functional deterioration of cells. Mitochondria, the biological clock in cells, are known to play a crucial role in the progression of cell aging. According to the mitochondrial free radical theory of aging, oxidative phosphorylation in the mitochondria produces free radicals, such as, reactive oxygen species (ROS), which lead to oxidative stress in cells. This, in turn, results in mitochondrial dysregulation, and eventually causes degeneration of cellular components, thereby propagating cell aging. However, it is to be underscored that aging, at its core, is a multifaceted phenomenon that involves a number of …

Application Of High-Deflection Strain Gauges To Characterize Spinal-Motion Phenotypes Among Patients With Clbp, Spencer Alan Baker

Theses and Dissertations

Chronic low back pain (CLBP) is a nonspecific and persistent ailment that entails many physiological, psychological, social, and economic consequences for individuals and societies. Although there is a plethora of treatments available to treat CLBP, each treatment has varying efficacy for different patients, and it is currently unknown how to best link patients to their ideal treatment. However, it is known that biopsychosocial influences associated with CLBP affect the way that we move. It has been hypothesized that identifying phenotypes of spinal motion could facilitate an objective and repeatable method of determining the optimal treatment for each patient. The objective …

As If It Were One Day, Megan Rowley Stern

Theses and Dissertations

As If It Were One Day is a multimedia art installation that chronicles patterns of light, movement, and sound, channeling the fluidity of time within the newborn phase of familial living. After giving birth to my daughter, I spent the next seven weeks observing these elements and recording them via video. The resulting art installation acknowledges my efforts to navigate my current life as an artist and a mother, my past battle with postpartum depression, and my consequent gravitation toward light.

Time Spent Jogging/Running And Biological Aging In 4,458 U.S. Adults: An Nhanes Investigation, Christina Michelle Blackmon

Theses and Dissertations

Telomere length is a good index of cellular aging. Longer telomeres are predictive of longer life, and healthy lifestyles are associated with longer telomeres. This study explored the relationship between time spent jogging or running each week and leukocyte telomere length (LTL) in 4,458 randomly selected U.S. adults. The association was studied using data collected by the National Health and Nutrition Examination Survey (NHANES), and a cross-sectional design. Total weekly jog/run time was calculated from survey responses. From the minute totals, three categories were formed: <10 minutes/week, 10-74 minutes/week, and ≥75 minutes/week. Adults in the third category met the U.S. guidelines. Data were analyzed using one-way ANOVA. Partial correlation was used to adjust for differences in potential mediating factors, including demographic and lifestyle/medical factors. In the total sample, after adjusting for all the potential covariates, mean LTL significantly differed across the 3 jog/run categories (F=4.1, P=0.0272). Specifically, adults who met the guidelines via jogging and/or running had significantly longer telomeres than adults who performed no jogging/running. Adults in the middle category did not differ from the other two categories. A minimum of 75 minutes of jogging/running weekly is predictive of longer telomeres when compared to adults who do not jog or run regularly.

Deliberate Practice With Motivational Interviewing: Basic Helping Skills Among Novice Helpers, Angel Laurencio Vega

Theses and Dissertations

We examined the effects of deliberate practice (DP) in teaching motivational interviewing (MI) helping skills to 45 upper-level undergraduate students in a semester-long course using an experimental crossover waitlist design. Students participated in a three-hour MI skills workshop focused on open-ended questions, affirmations, reflections, and summaries (OARS) and engaged in ongoing practice throughout the semester. Students video-recorded four skill demonstrations involving real-life changes with a volunteer client, addressing behavioral change. Pre- and post-workshop video recordings were analyzed to evaluate changes in reflective listening skills and the overall consistency of using MI OARS skills. The results revealed significant increases in reflections-to-questions …

Examining The Perception Of Fresh Produce Growers On Agricultural Sustainability And Diversification, Randy Ackah

Theses and Dissertations

To meet the increasing food demand of a growing population, adopting sustainable practices should be considered a need rather than a preference. Despite the economic benefits of agricultural production, some activities performed have been identified to have detrimental effects, especially on the environment. Most of the environmental impact of agriculture usually stems from the management practices and input materials used. One way of ensuring sustainable agriculture has been identified to be agricultural diversification. Available evidence indicates that horticultural crops such as fruits and vegetables play an important role in agricultural diversification. For the fruit and vegetable industry to achieve its …

Preventing Orthopedic Implant Associated Biofilm Infections Using Transition Metal Complex Laminated Bioactive Implants, Sowndarya J

Theses and Dissertations

Orthopedic implants are medical devices employed to repair the damaged structure and function of an injured musculoskeletal system. It helps millions of people suffering from bone fractures and arthroplasty. The increased use of orthopedic implants has given rise to implant-associated biofilm infections. Biofilm-mediated Implant-associated osteomyelitis (IAO) is a major concern in the medical field, wherein the treatment involves debridement, administration of antibiotics and removal of implants leading to increased cost of treatment.

The keystone bacterial pathogens involved in orthopedic implant-associated infections are Staphylococcus aureus and Acinetobacter baumannii which are members of the ESKAPE pathogens. A. baumannii has gained resistance against …

Concurrent Validity And Reliability Of The Vertical Jump And Standing Broad Jump Tests In Youth, Isaac Faamoe

Theses and Dissertations

Muscular power is an important component of fitness with implications for bone health, explosiveness in movements, and predicting long-term health outcomes. However, the literature is scarce concerning commonly used muscular power field tests among youth, including vertical jump (VJ) and standing broad jump (SBJ). PURPOSE: To investigate the relationship between VJ and SBJ. METHODS: Approximately 540 students (9-14 years of age) in grades 4-8 participated in the testing of the VJ and SBJ. Pearson correlations were used to evaluate relationships between jump variables and intra-class correlations (ICC) were used to examine the consistency of the relationship between the VJ and …

The Effects Of Diesel Exhaust Particle Exposure On Adipos Mitochondrial Bioenergetics And Inflammation, Cali Elizabeth Warren

Theses and Dissertations

Fine particulate matter (PM2.5) constitutes a significant component of ambient air pollution that has been implicated in the pathogenesis of metabolic disorders, including insulin resistance and type 2 diabetes. Among PM2.5 constituents, diesel exhaust particles (DEP) are prevalent particulates that infiltrate the bloodstream to drive systemic pathologies. The purpose of this study was to characterize the metabolic response of adipose tissue to DEP. We aimed to provide a comprehensive understanding by exploring mitochondrial bioenergetics, characterizing the inflammatory marker profile, including adipokines, and conducting a detailed histological analysis of adipocytes to provide valuable insights to the evolving understanding of the intricate …

Ecological Drivers Of Plasticity And Parental Care In Poison Frogs, Olivia Brooks

Theses and Dissertations

Parents increase their offspring fitness prospects by providing care, but at the cost of lost current or future reproductive opportunities. Parents often rear multiple offspring simultaneously, and because parents cannot supply unlimited care to their offspring, parents benefit from distributing resources non-randomly within a brood. Having access to information that helps inform allocation decisions can be valuable to parents, and parents may use a variety of information types that are either intrinsic or extrinsic to the offspring to help inform these decisions. Here, I explore the types of information that parents use when allocating resources within broods, and I explore …

Federated Analysis Of Wearables Data For United States Air Force Mental And Physical Readiness, Sung Yong O

Theses and Dissertations

This thesis investigates the use of machine learning and deep learning models within a federated learning framework to predict physical and mental readiness in military personnel, using wearable technology data. The collaboration with the 711th Human Performance Wing’s STRONG Lab highlights the importance of readiness as emphasized by the National Defense and Security Strategies. The study evaluates various predictive models, incorporating federated learning to ensure data privacy and security in healthcare systems. By analyzing a comprehensive dataset, the research aims to contribute to military readiness enhancement through technological advancements, supporting health and wellness initiatives to bolster the effectiveness of military …

Uprooted But Unbroken: Exploring The Experiences Of Yemeni Students At Yemeni Schools In Cairo, Sumood Abdulhadi

Theses and Dissertations

To contribute towards filling the research gap on the experiences of uprooted Yemeni children in Egypt, this phenomenological research was designed to explore the experiences of uprooted Yemeni students in Egypt. Twenty male and female Yemeni students from four Yemeni schools in Cairo participated in semi-structured interviews. The findings revealed that these uprooted children face various economic, social, and academic challenges within the Yemeni schools in Cairo, which seem to hinder their educational progress. Moreover, Yemeni children face difficulties not only within the Yemeni schools in Cairo but also in the streets and Egyptian schools of Cairo. Nevertheless, they appeared …

Integrative Genomic Insights Into Coral Resilience: Adaptive And Acclimatory Responses To Seasonal Environmental Shifts, Tasnim Ghanim

Theses and Dissertations

Coral reefs, critical to marine biodiversity and coastal protection, face escalating threats from climate change-related phenomena such as ocean warming. This warming is leading to widespread thermal stress that contributes to coral bleaching and infectious disease in corals, leading to the disruption of marine ecosystems and the economies that depend on them. Focusing on the brain coral Platygyra daedalea, known for its thermal resilience in the Persian Arabian Gulf—a region that exemplifies the extreme stressors of climate change—our study aims to dissect the genetic, transcriptomic, and microbiological underpinnings of coral survival in high-temperature environments predicted for the end of …

University Students' Wellbeing: A Case Study Of An International Private University In Egypt, Alia Attia

Theses and Dissertations

Wellbeing is a crucial topic that is gaining increasing attention in higher education and should be taken into careful consideration. This is a qualitative case study, using a phenomenological approach, which explores the phenomenon of student wellbeing in an international private university in Egypt. Data was collected through semi-structured individual interviews with a total of fourteen participants: eight purposefully selected students who have taken part in wellbeing programs, initiatives, or events at the American University in Cairo (AUC), as well as six faculty/staff members, leaders, mentors, or coaches in the field were interviewed. In addition to the interviews, conversations were …

Abundant Bodies In Times Of Excess: A Critical Exploration Of Fatness From Cairo To Tokyo, Sarah Aly

Theses and Dissertations

This work is an autoethnographic exploration of the social construction of fatness in contexts of existing and emerging neoliberal state control through the embodied experiences of fat people, following the tradition of ‘fat epistemology’ promoted by the emerging 'critical fat studies' field. It is a comparative study of the experiences of fatness as an unstable embodied category of being, rather than a liminal undesirable state or medical condition, in Cairo, Alexandria, and Tokyo, paying particular attention to the gender, racial, and class dynamics surrounding the construction (and marginalization) of fatness across various spatial and temporal contexts. These experiences are considered …

Yieldnet: Intelligent Fruit Yield Estimation For Selected Orchards Using Deep Learning Based Semantic Segmentation, Maheswari P

Theses and Dissertations

Agriculture contributes more resources for developing sustainable economic growth of the nation. Precision agriculture employs advanced techniques (machine learning and deep learning) for developing the intelligent systems of various agricultural applications. Among various agricultural tasks, yield estimation of crops plays a vital role in decision-making such as harvesting, marketing, cultivation practices, etc. Traditionally yield estimation is performed manually which has major drawbacks i.e., needs experts opinion, time-consuming and it is a challenging task for big orchards. To overcome these issues, an intelligent yield estimation model using neural network-based systems is required.

Some of the literature works have been explored for …

Illuminating How Nestling Mouth Color And Body Size Shape Parental Care In A Cavity-Nesting Species, Shana Border

Theses and Dissertations

Young animals often solicit care from their parents using behaviors and morphologies collectively termed begging, and for many nestling birds these begging displays include presenting their parents with vividly colored mouthparts. Mouth color is a complex trait that varies both across and within species, and different aspects of color may be under independent selection and serve different functions; the two primary proposed explanations for the evolution of mouth color are to increase nestling conspicuousness to parents and to provide parents with information about nestling quality. In addition to signals like mouth color, parents could also directly assess traits like nestling …

Stacking And Intersecting Nutrient 4rs On Potato, Samuel Hamilton Stapley

Theses and Dissertations

The 4Rs of nutrient management is a global agronomic initiative with an aim to improve the sustainability of major cropping systems and the environment. The objective for this project is to evaluate individual and stacked 4R management practices and how they intersect. A field trial near Grace, Idaho was conducted on potato (Solanum tuberosum L.) in 2020 and 2023. Nitrogen (N) fertilizer treatments included all combinations of two sources [urea or polymer coated urea (PCU)], two rates (82 or 100% of the recommended rate), and/or two timing/placements (all applied at emergence or 84% at emergence + 16% fertigation simulation) compared …

Resisting Internalized Stigma (Ris): Acceptability And Feasibility Of A Cognitive Behavioral Stigma Intervention For Early Psychosis, Francesca Maria Crump

Theses and Dissertations

The clinical high-risk state for psychosis (CHR-P) was created to help identify individuals experiencing early signs of psychosis to help forestall worsening symptoms. CHR-P individuals may experience stigma that may stem from internal or external processes, including from receiving specialized care. Research has demonstrated associations between internalized stigma and psychosocial and functional outcomes, which underscores the need for interventions to help mitigate the impact of stigma while balancing the need for treatment. To date, there is only one stigma intervention specifically designed for individuals designated as CHR-P, which is psychoeducational in nature. Based on the recent call to action that …

Development Of Monitoring Systems Using Computer Vision Techniques For Precise Fish Farming, Abinaya N.S

Theses and Dissertations

Fish farm is a biosystem with diversity and uncertainties demanding, an intelligent manual monitoring process, which is labor-intensive, invasive, costly, discontinuous, and persistent. The proposed work aims to develop Computer Vision (CV) -based monitoring techniques for precise fish farming to address these problems. Three major monitoring operations namely (i) Fish behavior analysis, (ii) Fish Classification (FC) and (iii) Biomass estimation have been investigated.

Fish schooling activity has been monitored using an overhead vision camera. Problems associated with fish occlusion are addressed using the weighted K-means clustering technique which provides an accurate estimation of fish school locations. Temporal variations of these …

Prevention Of Food Fraud In Egypt: Policy Implementation Challenges And The Way Forward, Hager Yehia Shalaby

Theses and Dissertations

Prevention and control of food fraud is now an emerging policy goal for different governments. Food fraud is intentionally adulterating food intended for personal gain and deceiving consumers. Adulterated food continues to be a significant threat to Egypt's food sector because of its negative impact on the food industry's reputation. Additionally, it jeopardizes the success of initiatives to increase investment, tourism, and exports in Egypt. Addressing fraud is, by definition, the most challenging food control system form because it directly addresses a personal stake benefiting from fraud behavior. In light of the importance of food fraud prevention as an emerging …

Determining The More Effective Behavior Analytic Intervention For Children With Autism Who Exhibit Pica Behaviors, Jennifer J. Lanham

Theses and Dissertations

Abstract

Determining the More Effective Behavior Analytic Intervention for Children With Autism Who Exhibit Pica Behaviors. Jennifer J. Lanham, 2024: Applied Dissertation, Nova Southeastern University, Abraham S. Fischler College of Education and School of Criminal Justice. Keywords: autism, pica, eating disorders, intervention, applied behavior analysis

This dissertation was designed to determine which behavior analytic intervention was more effective in the treatment and reduction of mouthing non-nutritive substances in children diagnosed with autism. This study included four participants in an A-B-A reversal design with a component analysis across four intervention phases. The study participants were enrolled in a center-based treatment environment …

Development Of A Xenograft For Annular Repair Using Pulsed Electric Field Exposures For Enhanced Decellularization, Prince Mensah Kwaku Atsu

Theses and Dissertations

Severe back injuries and chronic pain necessitate surgical replacement of damaged intervertebral disc (IVD) cartilage in advanced disease stages. Bovine IVD tissue has been exposed to an upper threshold pulsed electric field (PEF) dose, causing cell death without thermal damage to the tissue. Subsequent PEF exposures at lower magnitudes have accelerated the removal of immunogenic biomolecules though electrokinetic extraction using optimized aqueous solutions. This approach yields a natural scaffold, ready for biocompatibility and mechanical strength assessment. The effects of microsecond pulsed electric fields (µsPEF) on primary bovine AF fibroblast-like cells have been characterized in vitro. PEFs of 10 and 100 …

Symbiosis Under Stress: Unraveling The Interplay Of Ocean Acidification And Rising Temperatures On Acropora Samoensis (Staghorn Coral), Jerald William Smolkin

Theses and Dissertations

This experiment explores the response of marine organisms to the combined challenges of ocean acidification and rising temperatures, with a focus on coral reef ecosystems. As global climate change threatens profound declines in coral reefs, understanding the multifaceted impacts of these stressors becomes crucial. The study observes cellular changes in A. samoensis tissues in four different groups, including control, Temp, pH, and Temp and pH. Results indicate significant breakdown of membrane compartmentalization and cell junctions, with notable degradation and calcium carbonate crystallization in pH-stressed samples. Additionally, chlorophyll extraction data support coral bleaching due to the expulsion of zooxanthellae. These findings …

Poverty And Inequality: A New Deal For America’S Most Disadvantaged Communities, Thomas St. Hilaire

Theses and Dissertations

The United States, often hailed as the most affluent nation globally, paradoxically grapples with rates of poverty, disadvantage, and inequality that surpass those of its advanced democratic counterparts. The persistence of poverty and inequality in the United States have often been justified by beliefs of welfare dependency, “free market” thinking and utilitarianism. This master's thesis explores the far-reaching moral, political, and economic consequences of America’s high rates of poverty and inequality. It contends that federal action is urgently needed on more robust social programs that target poverty, such as affordable housing, accessible healthcare, greater worker protections, and deepened social capital …

A Systematic Review And Meta-Analysis Of Psychosocial Interventions For Early Childhood Problems, Ages 0-5, Hara Stephanou

Theses and Dissertations

Early childhood consists of important developmental milestones, including the acquisition of daily living skills, including toileting, feeding, and sleep. While previous reviews have focused on interventions for some childhood problems, no single study has broadly assessed interventions across common presenting problems in children ages 0-5. This study systematically reviewed 41 studies on interventions for externalizing (23 studies), internalizing (3), sleep (11), feeding (3), and toileting (1) using meta-analytic methods where applicable. Overall, externalizing interventions were effective (TX1 Hedges' g = -.60; TX2 g = -.51) and largely homogeneous. Individual interventions reduced externalizing behaviors more than group or self-guided interventions (TX1 …

Coping With The Covid-19 Pandemic: Examining Meaning-Making In A Socioecological Framework, Emilia Eva Mikrut

Theses and Dissertations

During 2020, the COVID-19 pandemic emerged as a threatening, unpredictable, and uncontrollable stressor. Meaning-making, or one’s ability to make sense of a stressful life event, integrate the event into one’s narrative of the world and meaning in life, and accordingly revise life goals, is a salient intrapsychic process contributing to psychological adjustment in the face of very stressful or traumatic experiences such as chronic health issues, interpersonal grief, and natural and man-made disasters. Early findings provide evidence for the critical role of meaning-making in coping with stressors associated with the COVID-19 pandemic. Though meaning-making is a universal process, one’s capacity …

Paresthesia Due To Peripheral Neuropathy: Anxiety And Wellbeing, Nikolas Cirillo

Theses and Dissertations

Purpose: Neuropathic pain has been linked with mental health concerns such as anxiety and wellbeing, but specific symptoms of neuropathic pain have had much less attention than the construct as a whole. Paresthesia, meaning “abnormal sensation” (tingling, numbness, pins and needles, impaired sensation, and itching) is a neuropathic pain symptom. Tissue compression is the most common cause of peripheral neuropathy (PN) as well as paresthesia. This study aimed to test the following hypotheses: (1) if paresthesia due to PN is positively correlated with anxiety, negatively correlated with wellbeing, and if (2) anxiety and (3) wellbeing varied significantly by level of …

Identity Denial And Food Choice: Do Chinese Americans Reassert Their American Identity Through Food?, Shelagh Mahbubani

Theses and Dissertations

Food choice is impacted by a variety of different factors, including cultural, social and socioeconomic (Chen & Antonelli, 2020; Contento, 2008; Rozin, 2015). Food choice has a major impact on an individual’s health, and research has shown an association between the prototypical “American diet” and an increased risk for health conditions such as hypertension, diabetes, and stroke (Liu et al., 2020). One important social factor that can influence food choice is the desire to appear as a prototypical member of a social group (Cruwys et al., 2012). For example, when an individual’s social identity is questioned (identity threat), they may …