Digital Commons Network^™

A Holistic Approach To Culturally Relevant Education In Biology To Examine Student Engagement, Robyn Brooke Biery

Theses and Dissertations

Recognizing that many students were disengaged in my grade-level biology class, this study sought to improve student engagement as a result of the implementation of CRE-enriched instruction and to describe themes associated with CRE and engagement. This qualitative action research study used a survey, exit tickets, and observations to discover emergent themes as a result of implementing CRE-enriched lessons. This action research study used member checking and disconfirming evidence to increase rigor and transferability. The results were that the use of CRE-enriched lessons increased the engagement of grade-level students in biology, and that engagement requires a two-pronged approach – cultural …

Peromyscus Maniculatus Bairdii And Peromyscus Maniculatus Sonoriensis Polymorphisms, Matthew Dixon Lucius

Theses and Dissertations

Sequencing technology has advanced greatly over the past couple of decades. This has led to many studies developing hypotheses based on genomic data. This requires many genomic studies to have up-to-date information on the species’ or subject’s genome being investigated. If a study does not have accurate or up-to-date background information, then they cannot fully develop their theories that are being established. In this study, I utilize outbred Peromyscus maniculatus, deer mice that are genetically diverse, to record the polymorphisms that are found throughout the Peromyscus maniculatus genome. I first explore the differences between the polymorphisms found in Peromyscus …

Too Feminine For Execution?: Gender Stereotypes And The Media’S Portrayal Of Women Sentenced To Death, Kelsey M. Collins

Theses and Dissertations

Traditional gender norms prescribing women as more nurturing and less aggressive than men have led to both the reluctance to view women as capable of violence, as well as a greater willingness to execute men than women in the United States. To make sense of the instances where women are sentenced to death, the media often pathologizes and/or demonizes them. Scholars have found that demonizing and dehumanizing those executed is a necessity to the implementation of capital punishment, both in cases of male and female defendants. To better understand how the news media have framed the gender and racial narratives …

Decellularization Strategies Of Naturally Derived Biomaterials For Tissue Engineering Applications, Julia Elizabeth Hohn

Theses and Dissertations

In 2017, over 3.5 million peripheral vascular surgeries were performed worldwide with over 400,000 vascular repair or replacement surgeries being performed in the United States each year alone. As the number of vascular repair surgeries, including both coronary and peripheral bypass grafting procedures, continues to increase each year, these statistics indicate an urgent need for more effective and readily available replacement materials. Regenerative medicine and tissue engineering (TE) approaches, including the design, fabrication, and validation of suitable biomaterials in vitro that direct the repair and regeneration of damaged tissues, have been proposed to alleviate this problem. While advanced biomaterials have …

Sources And Cycling Of Neodymium And Rare Earth Elements In The Arctic Amerasian Basin And Bering Sea, Brian D. Duggan

Theses and Dissertations

The isotopic composition of dissolved neodymium (¹⁴³Nd/¹⁴⁴Nd, expressed as εNd) behaves quasi-conservatively in the ocean and has been used as a palaeoceanographic tracer of ocean circulation. The εNd value of water masses is acquired—and often altered—during interaction with sediments along the margins; however, the processes involved in seawater εNd acquisition remains poorly characterized and quantified. Here we report the results of 349 Nd isotope and 354 rare earth element (REE) concentration measurements from 27 water column profiles across the Bering shelf and through the Arctic Amerasian Basin collected during U.S. Arctic GEOTRACES cruise HLY1502 (GEOTRACES section …

Collaborative Problem-Solving And Its Impact On Inclusive Practices, Confidence, And Beliefs Of General Education Teachers In Colombia, Shannon Renee Elmore

Theses and Dissertations

The purpose of this mixed-methods action research study was to examine the impact of a collaborative problem-solving process on the inclusive practices, confidence, and beliefs of general education teachers at a private bilingual school in Bogotá, Colombia. The problem of practice this research aims to address is the challenge teachers face in meeting the needs of a diverse student population with the increasing inclusion of exceptional learners in the general education classroom and a lack of preparation during teacher training programs. Grounded in Vygotsky’s social constructivism and Wenger’s communities of practice, this dissertation explores how teacher collaboration can lead to …

Xenobiotic Exposures On Women’S Reproductive Health, Maria Zubizarreta Mcclam

Theses and Dissertations

Environmental and chemical exposures are continually introduced into our bodies. The female reproductive cycle is complex and particularly sensitive to toxic substances. A recent rise in infertility and reproductive diseases and cancers make reproductive toxicity a public health concern. The overall purpose of this dissertation is to explore how environmental and chemical exposures impact women’s reproductive health and overall wellbeing. To do this, a variety of topics related to women’s reproductive health are explored, including how environmental exposures can impact reproduction, methods for studying reproductive dysfunctions, fertility preservation among cancer patients, and the overall wellbeing of female cancer patients.

The …

Arctic Ocean And Subarctic Seas Dynamics In A Changing Climate, Sarah B. Hall

Theses and Dissertations

Salinity is the primary determinant of the Arctic Ocean’s vertical density stratification in the upper ocean, which has major implications on the ocean’s physical dynamics alongside a period of rapidly declining sea ice. In recent decades, the Arctic’s freshwater content (FWC) has increased as a result of the accumulation of freshwater source inputs. Additional freshwater exported to the North Atlantic may hinder overturning processes that are vital to the regulation of global climate. This dissertation employs in situ measurements, satellite observations, and ocean model simulations to better understand salinity and freshwater changes in the Arctic Ocean during this changing climate. …

Gratitude Buffers The Effects Of Stressful Life Events On Early Adolescents’ Life Satisfaction And Externalizing Behaviors But Not Internalizing Behaviors, Mimi Scott Webb

Theses and Dissertations

Identifying psychological strengths that foster healthy development in youth has become a topic of exploration in the field of positive psychology (e.g., Suldo & Huebner, 2004; Valle et al., 2006). Gratitude is a promising trait-like characteristic with qualities indicative of a potential psychological strength that may serve as a protective factor for early adolescents in the face of stressful life events. This study utilized data from a sample of 1,880 middle school students from the Southeastern United States. Hierarchical regression analyses investigated gratitude’s role as a moderator in the relationship between stressful life events and adolescent well-being. Specifically, gratitude’s ability …

Perceived Sexual Intent: Power, Relationship Status, And Gender, Joseph Eric Padgett

Theses and Dissertations

Does lacking power cause people to think potential partners are less interested in engaging with them sexually? Do men and women perceive the interests of potential sex partners differently? Does the amount of sexual intent perceived by people who are in a romantic relationship differ from that of singles? Power has been shown to impact perceptions in other contexts, and the way people rate the attractiveness of potential mates is shown to differ depending upon their own relationship status. Similarly, gender differences are a central theme in discussions of sex related perceptions, preferences, and behaviors. In this study, I utilize …

The Congruence Of Parent-Teacher Relationships For Students With Autism: The Role Of Teacher Efficacy And School Climate, Morgan Johnson

Theses and Dissertations

Ecological Systems Theory (Bronfenbrenner, 1979) can be used as a framework to examine the importance of communication and collaboration among parents and teachers as both are important stakeholders in the field of education. Parent-teacher relationships are critical for autistic students particularly due to individualized education plans and the provision of special education services (IDEA, 2004). The current study examined relationships between parent-teacher dyads in terms of congruence, the degree to which both parties are in agreement about their relationship. This study was unique in its mixed methods design, combining quantitative and qualitative data, as well as its use of dyadic …

Effects Of Cell-Cell Signaling On Mesenchymal Stem Cell Mechanosensing And Adaptation To Dynamic Material, Matthew E. Lowe

Theses and Dissertations

The goal of this research is to identify the role of engineered cell-cell signals on how cells sense material properties. Mesenchymal stem cells (MSCs) are adult cells whose behavior is regulated by matrix mechanosensing, which is characterized by stiffness-dependent changes in cell shape and the nuclear localization of mechano-transducer proteins including YAP (Yes-associated Protein). MSC area and nuclear YAP translocation increase with increasing stiffness, and although low levels of N-cadherin-based cell-cell signaling reduce this effect, two fundamental questions remain: (1) do engineered cell-cell signals at higher concentrations further reduce matrix mechanosensing, and (2) does N-cadherin signaling affect MSC adaptation to …

Charge Detection Mass Spectrometry Using Printed Circuit Board Arrays For The Analysis Of Microparticles In The Martian Atmosphere, Elaura Luanne Gustafson

Theses and Dissertations

Charge detection mass spectrometry (CDMS) is a single particle technique capable of simultaneously measuring charge and mass-to-charge ratios for individual ions or particles. The linear array CDMS design theoretically has no upper mass limit and is therefore a choice method for the analysis of high mass and heterogeneous samples, such as dust microparticles in the Martian atmosphere. This dissertation describes the development of a novel charge detection mass spectrometer made of printed circuit boards (PCB) for the analysis of dust microparticles in the Martian atmosphere. Development of this device has required investigations in analysis methods and the engineering design of …

Applying The Seven Principles Of Learning To Development Communication, Lina Abd El Ghaffar

Theses and Dissertations

Development communication originated as a post-war term meaning “the application of communication strategies and principles in the developing world.”. As time went by, various definitions of development communication emerged, each reflecting its political agenda and interests. A more recent definition states that development communication aims to remove constraints for an increasingly participatory and equal society.

Sustainability and inclusivity are at the heart of effective development. The current development communication paradigms are the top down Dominant paradigm which is criticized for not being inclusive and the bottom up Participatory paradigm which is criticized for not being sustainable.

Based on the Seven …

Neuroticism And Relationship Quality: A Meta-Analytic Review, Charlotte R. Esplin

Theses and Dissertations

Of each of the Big-Five personality traits, neuroticism is most strongly associated with poor relationship outcomes. Prior research has established a robust negative association between neuroticism and relationship quality, regardless of participant age, length of relationship, and country of origin. As so much has already been studied on the topic of neuroticism and relationship quality, the current study explores the association between neuroticism and relationship using meta-analytic methodology, and details whether Hill's seven criteria for causation have been met in the current literature thus far. After searching through databases and the references of included studies, I used 151 published studies …

Analysis Of The Cytopathogenic Effect Of Different Hiv-1 Vpr Isoforms On Primary Human Cd4+ T Cells And A Model Cell Line, Jonatan Josue Fierro Nieves

Theses and Dissertations

Human Immunodeficiency Virus (HIV) is the causal agent of acquired immunodeficiency syndrome (AIDS), a disease characterized by the depletion of CD4+ T cells which impairs immune response. Analysis of HIV-1 infected patients has identified two distinctive phenotypes that differ in length of time towards the development of AIDS, Rapid Progressor (RP) and Long-Term Non-Progressor (LTNP) patients. The cause of the differences between these two groups is a process that is still under investigation. Hints about a possible cause have been attributed to the discovery of mutations in the viral protein R (Vpr) that have been associated with these phenotypes: mutations …

Finding Biomarkers From Long-Non-Coding Rnas In Serum Of Patients With Non-Alcoholic Fatty Liver Disease, Nouran Yonis

Theses and Dissertations

Nonalcoholic fatty liver disease (NAFLD) is becoming a serious global public health problem as it is a highly prevalent condition, that begins as simple liver steatosis and develops into an inflammatory steatosis form known as non-alcoholic steatohepatitis (NASH). NAFLD has been linked with multiple comorbidities, which in certain cases predisposes to mortality secondary to extrahepatic neoplasms and coronary diseases. On the other hand, NASH leaves patients at risk of developing hepatocellular carcinoma (HCC). The incidence of NAFLD- based HCC is steadily increasing and is projected to surpass the incidence of HCC from viral origins. Long non-coding RNAs (lncRNAs) have been …

Intrinsic Disorder In Proteins Associated With Neurodegenerative Diseases, Akshatha Ganne

Theses and Dissertations

A protein’s structure is determined by its amino acid sequence and post-translational modifications, and provides the basis for its physiological functions. Roughly a third of the proteome in mammalian species comprises proteins that contain highly unstructured or intrinsically disordered regions. Proteins with extensive unstructured regions are referred to as intrinsically disordered proteins (IDPs). Recent advances in experimental and computational analyses predicted multiple interacting partners for the disordered regions of proteins, implying critical roles in signal transduction and regulation of biological processes. This dissertation has studied the connection between the misfolding of a protein and an insoluble protein using the ability …

High Power Microwave Operational Exposure Detection Using Thermoacoustic Wave Generation In Lossy Dielectric Polymers, James J. Frey

Theses and Dissertations

A feasibility analysis for the use of microwave-induced thermoacoustic (TA) wave generation in lossy dielectric media to detect pulsed high power microwave directed energy weapons in force health protection applications was conducted based on a series of empirical and computational investigations. A potential target volume material, carbon-loaded polytetrafluoroethylene, was identified for further study based on anticipated complex dielectric properties, with laboratory measurements of select electromagnetic (EM), thermal, and elastic material properties of relevance to the TA effect conducted to determine parameter values. A planar geometry TA-based signal chain model using thin film piezoelectric sensors was developed for both finite element …

Analysis Of Graph Layout Algorithms For Use In Command And Control Network Graphs, Matthew R. Stone

Theses and Dissertations

This research is intended to determine which styles of layout algorithm are well suited to Command and Control (C2) network graphs to replace current manual layout methods. Manual methods are time intensive and an automated layout algorithm should decrease the time spent creating network graphs. Simulations on realistic synthetically generated graphs provide information to help infer which algorithms perform better than others on this problem. Data is generated using statistics drawn from multiple real world C2 network graphs. The three algorithms tested against this data are the Spectral algorithm, the Dot algorithm, and the Fruchterman-Reingold algorithm. The results include a …

Analytic Case Study Using Unsupervised Event Detection In Multivariate Time Series Data, Jeremy M. Wightman

Theses and Dissertations

Analysis of cyber-physical systems (CPS) has emerged as a critical domain for providing US Air Force and Space Force leadership decision advantage in air, space, and cyberspace. Legacy methods have been outpaced by evolving battlespaces and global peer-level challengers. Automation provides one way to decrease the time that analysis currently takes. This thesis presents an event detection automation system (EDAS) which utilizes deep learning models, distance metrics, and static thresholding to detect events. The EDAS automation is evaluated with case study of CPS domain experts in two parts. Part 1 uses the current methods for CPS analysis with a qualitative …

Orbit Determination With Event-Based Cameras To Improve Space Domain Awareness, Conor M. Wisentaner

Theses and Dissertations

The objective of this research is to assess the utility of a COTS EBC for SDA applications by evaluating its ability to produce data for orbit updates of resident space objects. Unlike traditional frame-based imaging sensors, the pixels on an EBC activate independently when a change in brightness is detected to produce a continuous data flow on a per pixel basis. This unique functionality provides much higher temporal resolution than traditional frame-based sensors, such that an EBC can generate far more data points from a single observation than a frame-based sensor. However, current COTS EBCs have less spatial resolution than …

A Methodological Framework For Parametric Combat Analysis, Dustin L. Hayhurst Sr.

Theses and Dissertations

This work presents a taxonomic structure for understanding the tension between certain factors of stability for game-theoretic outcomes such as Nash optimality, Pareto optimality, and balance optimality and then applies such game-theoretic concepts to the advancement of strategic thought on spacepower. This work successfully adapts and applies combat modeling theory to the evaluation of cislunar space conflict. This work provides evidence that the reliability characteristics of small spacecraft share similarities to the reliability characteristics of large spacecraft. Using these novel foundational concepts, this dissertation develops and presents a parametric methodological framework capable of analyzing the efficacy of heterogeneous force compositions …

Case Study: Exploring College Students’ Transformative Learning Experience Through Co-Creation Of A Pilot Compassionate Parenting Module In A Humanities Class, Maria Silvia Casabianca

Theses and Dissertations

A case study was conducted with 14 students who took a 16-week college humanities course at a regional university in the state of Florida. The core subjects of the course were kindness, compassion, and empathy. The instructor’s approach to teaching included methods akin to those of transformational learning. Data were collected from 14 weeks of reflective journals, semi-structured interviews, and compassionate parenting modules written by the participants as final assignments. Findings indicated that transformative learning practices supported participants’ reflection and identification of acquired beliefs and new learning about kindness, empathy, and compassion. Participants also described perceived benefits of kindness for …

Socioeconomic Status And Physical Attractiveness In Partner Selection 32 Years Later: An Empirical Replication And Extension Of Townsend And Levy (1990), Elena Kelsey Henderson

Theses and Dissertations

Partnership is a universal part of human existence. Human partner selection has been long studied within evolutionary and sociocultural frameworks. One study by Townsend and Levy (1990) found that physical attractiveness and socioeconomic status influence male and female partner selection in distinct ways. The present study replicated and extended the work of Townsend and Levy, investigating how physical attractiveness, socioeconomic status, and race and ethnicity influence relationship willingness at various levels of involvement. A repeated measures ANOVA was conducted, and planned post hoc pairwise comparisons and parameter estimates were analyzed. We analyzed responses from 503 single American adults of four …

Parent And Child Acculturation Differences: Sleep And Weight Outcomes In Latinx Pre-Adolescents, Kelsey K. Zaugg

Theses and Dissertations

Introduction: The present study aimed to evaluate associations between parent-child acculturation differences and sleep and weight outcomes in Latinx pre-adolescents aged 10-12 years. Parent and child stress were considered as possible mediators through which parent-child discordance in acculturation may negatively impact sleep quality and body fatness. Pre-adolescent resilience and ethnic pride were explored as possible personal strengths that may ameliorate the impact of this association. Method: Data from mothers, fathers, and pre-adolescents were collected on two occasions separated by one year. In our sample, only language-specific acculturation was significantly different between parents and children. Thus, parent-child language difference was a …

Nup211 Plays An Important Role In Regulating Mrna Export And Stress Response, Ayana Ikenouchi

Theses and Dissertations

Nup211 is a nuclear pore basket component in Schizosaccharomyces pombe and roles in the gating functions of NPCs. Using RT-qPCR, I found that in nup211-shutoff cells, the transcript levels of genes in mRNA export and stress-response pathways were significantly changed, suggesting nup211 is involved in regulating stress response pathways.

Relationships Between And Student Perceptions Of Self-Efficacy, Growth Mindset, And Mathematics Identity Of Adolescents In A Rural South Georgia Charter School, Carrie Cooper Pierce

Theses and Dissertations

This mixed methods study investigated the relationships between the constructs of self-efficacy, growth mindset, and mathematics identity among middle school students at a South Georgia charter school. Constructivist grounded theory was used to investigate the strength of these constructs along with student perceptions of what factors make one a math person. The study was an explanatory sequential design consisting of an online survey followed by student interviews. Ninety-one students participated in the survey. Multiple linear regression was used to determine whether a correlation existed between the variables as well as among student subgroups. Self-efficacy was found to be a predictor …

The Role Of Small Gtpases In Regulating Blood-Brain Barrier Mechanotransduction, Brandon Jude Deore

Theses and Dissertations

Fluid shear stress is an important mediator of vascular permeability, yet the molecular mechanisms underlying the effect of shear on the blood-brain barrier (BBB) have yet to be clarified in cerebral vasculature despite its importance for brain homeostasis.. Neurological symptoms including the formation of microclots, stroke, and other neurological pathologies associated with changes in cerebral blood flow are hallmarks of BBB dysfunction. The in vitro model used in this dissertation is compatible with real-time measurement of barrier function using a transendothelial electrical resistance as well as immunocytochemistry and dextran permeability assays. These experiments reveal that there is a threshold level …

Facing The Matter: An Eye-Tracking Assessment Of Social Media Beauty Filter's Impact On Cosmetic Surgery Normative Beliefs, Camilla Marie Owens

Theses and Dissertations

Communication research has begun to assess the unique relationship between social comparison, social media, and body image (Lewallen & Behm-Morawitz, 2016), yet little research has been done to assess the unique connection between body dissatisfaction, social media filters, and cosmetic surgery (Beos et al., 2021). Studies have found that viewing edited body images on Instagram positively correlates with decreased body satisfaction and behaviors of body objectification (Tiggemann, & Barbato, 2018). This study used a series of scales to measure individuals' media exposure (MTUAS: Rosen et al., 2013) body area satisfaction (BASS; Brown et al., 1990), facial region satisfaction (FRSS; Guthrie …