Digital Commons Network^™

Supplemental Action Learning Workshops: Understanding The Effects Of Independent And Cooperative Workshops On Students’ Knowledge, Kathryn M. Morris

Dissertations

Community colleges enroll more than half of the undergraduate population in the United States, thereby retaining students of varying demographics with extracurricular demands differing from traditional four-year university students. Often in a collegiate lecture course, students are limited in their abilities to absorb and process information presented by their instructors due to content-specific cognitive gaps between the instructor and the student (Preszler, 2009). Research has shown implementation of instructor-facilitated action learning workshops as supplemental instruction may help bridge these cognitive gaps allowing better student conceptualization and dissemination of knowledge (Drake, 2001; Fullilove & Treisman, 1990; Preszler, 2009; Udovick et al., …

Behavioral And Environmental Analysis Of Self-Reported Dysphonic And Non-Dysphonic High School Music Teachers, Emily Pence Brown

Dissertations

Vocal fatigue and dysphonia are considered to be common hazards associated with occupational voice users. Teachers, due to the consistent communication demands of the profession, represent the highest percentage of clinical voice disorder patients (Verdolini & Ramig, 2001). Voice related injuries in teachers could result in lost wages due to missed work, additional costs for medications, therapy, and surgeries, and teacher attrition (Verdolini & Ramig, 2001).

The purpose of this study was to observe specific teacher behaviors and classroom environmental factors among and between three self-reported dysphonic and three self-reported non-dysphonic music teachers. The researcher observed each participant daily during …

An Investigation Of Selected Variables Related To Student Algebra I Performance In Mississippi, Undray L. Scott

Dissertations

This research study attempted to determine if specific variables were related to student performance on the Algebra I subject-area test. This study also sought to determine in which of grades 8, 9, or 10 students performed better on the Algebra I Subject Area Test. This study also investigated the different criteria that are used to schedule students into Algebra I. Principals in respondent schools indicated that 8^th graders performed better on the Algebra I Subject Area Test, followed by 9^th and then 10^th grade students. The data indicated that administrators believed that 8^th grade student performance …

In Absentia Parentis: The Orphan Figure In Latter Twentieth Century Anglo-American Children’S Fantasy, James Michael Curtis

Dissertations

Childhood development theory tells us that there are certain psychological processes that we all undergo during childhood, regardless of our national or cultural background. These developmental struggles can include some of the more ambivalent cycles—such as regression, which can be both a positive and negative phenomenon—but can also include some of the more beneficial processes like overcoming separation anxiety and creating and establishing a sense of self. One figure that is often marginalized in discussions of childhood development in children’s fantasy fiction is the orphan. In fact, book-length studies on the orphan figure in children’s literary fantasy are virtually non-existent; …

The Effectiveness Of Digital Leadership At K-12 Schools In Mississippi Regarding Communication And Collaboration During Ccrs Implementation, Lin Zhong

Dissertations

Successful CCRS implementation requires educators to communicate and collaborate at the local, state, and national level. Technology plays an important role in successful CCRS implementation. This study aims to investigate how digital leadership improves communication and collaboration at K-12 schools in Mississippi regarding implementation of CCRS as well as the effectiveness of different ways of supporting communication and collaboration regarding CCRS implementation. Mixed-method was chosen to investigate the research questions. Ten public school principals from two school districts were interviewed and observed at qualitative stage and two hundred fifty-four public schools teachers participated in the survey at quantitative stage. Interviews …

Lignocellulose As Carbon Source Promotes Bacterial Synergism And Reduces Antagonism, Yijie Deng

Dissertations

Lignocellulose decomposes slowly in nature because it consists of complex polymers resistant to enzymatic degradation by most organisms. Some bacteria are capable of producing cellulolytic enzymes but the way in which bacteria interact within a community to enhance degradation of the recalcitrant substrate is poorly understood. A better understanding of how bacterial interactions affect lignocellulose degradation would provide potential approaches to improve the efficiency of lignocellulose degradation for biofuel production.

To study whether bacterial interactions enhance lignocellulose degradation, I grew environmental bacterial isolates in mixed cultures and pure cultures. I found that bacterial synergism in mixed cultures was common in …

Ecology And Genetics Of Lungless Salamanders (Family Plethodontidae) In The Gulf Coastal Plain, Jennifer Yasmin Lamb

Dissertations

During the last half century, lungless salamanders (Family Plethodontidae) have been the subject of numerous studies in the fields of ecology and genetics. While most works have focused on the species-rich Eastern Highlands region, there has been a recent shift towards plethodontid assemblages within the Coastal Plain. The research presented herein applies hierarchical occupancy models and both mitochondrial and nuclear genes to address questions pertinent to the biology and conservation of plethodontids within the Gulf Coastal Plain. The results of a multi-species Bayesian single-season occupancy model indicated that two environmental gradients, upstream drainage area and stream drying, influenced the probability …

Transition Between Phases Of The Annual Cycle: Spring Migration To Breeding In Nearctic-Neotropical Songbirds, Kristen Marie Covino

Dissertations

Appropriate timing of each life-history stage is crucial for seasonally migratory species. The temporal constraints faced by migratory songbirds require that they overlap preparation for breeding with spring migration. However, previous work has focused primarily on male birds and has produced inconsistent results regarding the degree of overlap between these two life-history stages. I study the degree to which migrating male and female songbirds prepare for breeding throughout spring migration as they move towards their breeding grounds. Overall, male migrants show a significant degree of breeding preparation during spring migration as determined by circulating testosterone levels and their ability to …

Synthesis And Characterization Of "Click Inspired" Thiol-Ene-Fullerene Nanocomposites, Amber Danielle Windham

Dissertations

This work explores the covalent incorporation of C₆₀ and Sc₃N@C₈₀ fullerenes into thiol-ene networks by a facile, one-pot photochemical reaction with multifunctional thiol and alkene monomers. Synthesis of disulfide bonds within the tri-functional thiol monomer served to photochemically initiate the reaction when cleaved. This was followed by thermal curing of the pre-polymer for preparation of fullerene-containing thiol-ene films. Films were characterized by standard techniques including infrared spectroscopy, gel percent, and thermogravimetric analysis. The role of C₆₀ and Sc₃N@C₈₀ as suitable alkenes for free-radical reaction with multifunctional thiols was investigated by preparing a …

What Influences Dolphin Interest In Video?, Kelley Ann Winship

Dissertations

Environmental enrichment is an important component in maintaining the welfare of animals housed in human care. While a variety of enrichment types (e.g., objects, food, sound) have been utilized, a major challenge in developing enrichment is determining the enrichment potential of various techniques for individual animals. In this study, the efficacy of video clips as enrichment devices was assessed in two species of captive dolphins, exposed to video footage accompanied by sound. Videos were evenly divided into five categories, based on content, and played at underwater viewing windows across 20 sessions while the animals were housed with conspecifics. Species and …

Addressing The Issues Of Drug Delivery Via Advanced Macromolecular Design, Brooks Allen Abel

Dissertations

The work described in this dissertation focuses on the development of synthetic approaches toward novel polymer architectures that specifically address the issues of in vivo drug delivery. Successful implementation of the synthetic methodologies described herein required fundamental investigations into the underlying chemistries in ways that now provide greater insights into the nature of the these chemical reactions.

In Section I, the synthesis of tunable pH- and CO₂-responsive sulfonamide-containing polymers using reversible addition-fragmentation chain transfer (RAFT) polymerization is described. Initially, poor polymerization control of methacryloyl sulfonamide (MSA) monomers was observed using traditional RAFT polymerization conditions. Ultimately, reducing the polymerization …

The Relationship Between Early Childhood Education And Student Success, Fina F. Gayden-Hence

Dissertations

The purpose of the study was to determine whether differences exist in performance on high-stakes accountability tests in third grade and high school among seniors who attended preschool and those who did not attend preschool. Test performance was measured using 2006-2007 third grade Mississippi Curriculum Test (MCT) reading and math scaled scores, English II and Algebra I Subject Area Testing Program-2 (SATP2) scores, and ACT composite scores. The study further analyzed the difference among groups based on retention rates, gender, and socioeconomic status. The study also examined the beliefs of parents of preschool attendees about the impact of preschool on …

A Qualitative Study Of The Process Of Learning Nursing Skills Among Undergraduate Nursing Students, Michael Douglas Aldridge

Dissertations

This qualitative, phenomenological study sought to answer the question: How do undergraduate nursing students learn to perform psychomotor skills within the full complement of nursing skills? Nine senior nursing students from a nursing school in the south central United States participated in this study. In-depth interviews using open-ended questions were conducted, recorded, transcribed by the researcher, and then analyzed using Colaizzi’s method to identify recurring themes. These themes were validated with the participants using a member checking process. An audit trail was kept to enhance dependability and confirmability. Six themes were identified: (a) the umbrella of emotion; (b) practice, practice, …

I Don’T Like The Talking Part: The Use Of Videogames To Facilitate Grief Therapy For Adolescents With Autism Spectrum Disorder, Kyle Brent Johnson

Dissertations

Adolescents with Autism Spectrum Disorder often experience difficulties interacting with peers and expressing their emotions, characteristics that may complicate their grief experiences. This qualitative study was designed to explore the experiences of four adolescents with ASD who participated in grief therapy facilitated through the use of videogames. Each participant engaged in 10 weekly grief counseling sessions. Participants and caregivers were interviewed prior to counseling, mid-way (participants only), and after completion of therapy. All counseling and interview sessions were video- or audio-recorded, and transcripts were created from these recordings. All data were analyzed and coded through the lens of the different …

A Validation Study Of The Orientation Model, Brett David Wilkinson

Dissertations

The orientation model is a multidimensional measure of dual-processing capacities that incorporates four empirically-validated instruments taken from the existing literature on cognitive processing, attachment, empathy, and self-focused attention. As a strength-based conceptualization tool for humanistic counseling practices, the model is intended to provide counselors with a flexible means to assess non-diagnostic client attributes within a dispositional model of client cognitive processing patterns. Although humanistic principles often conflict with the use of quantitative instruments in clinical practice, the model is guided by the tenet that objective measures can effectively supplement clinical insight into client patterns of functioning. It thus serves as …

Outdoor Education And Mobile Learning: An Autobiographical Narrative Using Application-Based Information And Resources, Ivan Nikolaeff

Dissertations

Although mobile learning using smartphones and applications or apps have the potential to inform and educate individuals in an outdoor environment, users may find that connectivity issues and basic knowledge of outdoor environments, including both physical and emotional, could be limited by what this technology provided. This study provided my perspective as both participant and researcher on a journey over 150 miles on the Colorado Trail, using my iPhone as my primary tool for navigation and information for learning how to survive in an outdoor environment. From the beginning, the physical effects were difficult to overcome, but it was the …

Evaluation Of Students' Interest, Effort Beliefs, And Self-Efficacy In General Chemistry, Brent Ferrell

Dissertations

The research described in this dissertation is outlined in three phases and is focused on the measurement, interrelationships, and understanding of self-efficacy, interest, and effort beliefs among general chemistry students. The primary drive behind this research was to provide measurement tools to chemistry education researchers and practitioners as a way to evaluate novel and alternative teaching strategies and interventions. The first phase of this study involved gathering evidence for validity and reliability of four previously published scales that measured initial interest, maintained interest, self-efficacy, and effort beliefs. These scales were taken from other disciplines, with the exception of the self-efficacy …

Evolution And Biological Roles Of Three-Finger Toxins In Snake Venoms, Cassandra M. Modahl

Dissertations

Snake venoms are complex mixtures of many enzymatic and non-enzymatic proteins, as well as small peptides. Several major venom protein superfamilies, including three-finger toxins, phospholipases A2, serine proteinases, metalloproteinases, proteinase inhibitors and lectins, are found in almost all snake venoms, from front-fanged viperids (vipers and pit vipers) and elapids (cobras, mambas, sea snakes, etc.) to rear-fanged colubrids. However, these proteins vary in abundance and functionality between species. Variation in snake venom composition is attributed to both differences in the expression levels of toxin encoding genes and occurrence of amino acid sequence polymorphisms. Documenting intraspecific venom variation has both clinical (antiserum …

Biological Distance In Middle And Late Archaic Populations Of The Mid-South United States, Meadow Lea Campbell

Dissertations

This dissertation used osteometrics to assess the level of congruence between biological distance and long-distance material exchange in three Middle and Late Archaic groups living in the mid-South United States. Dental and cranial data support greater biological affinity between groups in southern Illinois (represented by individuals from the Black Earth site) and central Tennessee (individuals from Eva and surrounding sites) while groups in the Green River region of western Kentucky (Shell Mound Archaic) were somewhat more removed or perhaps more isolated. Females were more biologically variable than males for the majority of metrics used. This finding is suggestive of a …

Naturally Striated Muscle: Examining The Ideographic Crystallization Of, Dustin L. Briggs

Dissertations

In U.S. America and much of the Western world, natural is a venerated symbolic placeholder for any number of assumed virtues and ideals. Present conflicts have brought forward questions about what natural (which I argue functions as an ideograph) should mean in contexts that seem to call for a formal, enforceable definition. In this study, I use the vocabulary of Deleuze and Guattari (1987) and the context of bodybuilding to work towards a theory of how ambiguous ideographs become "striated" or “crystallized.” Within this discussion I present instances where natural has been employed as a vehicle to cause harm, and …

#Socialsupport For Diet And Physical Activity Via Web 2.0: A Qualitative Study Of College Women, Bethany Kies Kies

Dissertations

Like other adults in the U.S., college students, have high rates of obesity and overweight, and they have a pattern of poor diet and physical inactivity. Emerging adulthood is a key developmental period for building life-long habits and behaviors, and health theory suggests that one’s social environment and amount of social support affects health behaviors, particularly among women. With the technological advances of Web 2.0, or social media, the opportunity for providing social support for health behaviors through the online social environment now exists; social media is a game changer for both research and practice related to understanding the social …

Cracking The World System: Mediating Public Pedagogies From The “World Revolution” Of 1848, James Kepley Anderson

Dissertations

This project adopts the framework of World Systems Analysis [WSA], formulated by global sociologist Immanuel Wallerstein, to take the entire world system as the unit of analysis. Drawing on the work of Paulo Freire, the seminal theorist of critical pedagogy, this project couples WSA with the analytic lens of public pedagogy to overcome the conceptual limitations of ideology and of various postmodern critiques. Primary media sources are used for purposes of critical political economy, to outline the contours of economic changes and class formations from the first world revolution. A detailed descriptive history of the revolutions that swept across Europe …

Body Image And Anthropometric Measurements In Bariatric Surgery Patients, Julie Ann Varns

Dissertations

Purpose: The purpose of this study was to explore body image and anthropometric (body mass index) measurements in bariatric surgery patients over three months. Conceptual framework: The dimensions of body image are body attitude, Appearance Evaluation, body checking, body space, body size, and Appearance Orientation. Body attitude is affective distress related to one’s weight, shape, size, and fatness. Appearance Evaluation is feelings of satisfaction or dissatisfaction with one’s looks. Body checking is the repeated scrutiny of one’s body size, shape, and weight. Perceived body space is the amount of space individuals perceive their bodies to occupy. Perceived body size is …

Hand Control Of Bipedal Balance In Quiet Standing: Implementations For Lower Extremity Exoskeleton, Ala’A Al-Rashdan

Dissertations

Maintaining stable posture is important for humans, even though it is challenging because of our bipedal structure. One of the main balance related disorders is paraplegia due to spinal cord injury. People with a complete spinal cord injury have motor and sensory impairment that greatly reduces the ability to move their lower extremities. In recent years, lower extremity exoskeletons that apply torques generated by motors to the joints of the person have helped to them stand and walk.

This research is a part of an extended project to build a new exoskeleton for use by individuals with paraplegia due to …

Exploration Of Experiences And Perceptions Of Saudi Arabian Students Within A Team Project Setting At An U.S. University, Ronald A. Mckean

Dissertations

Cultural differences between Saudi and American students produce immense challenges to a successful integrative acculturation. Positive experiences can not only enhance the education of international students, but also effect understandings and attitudes of local students, administrators, faculty, and staff. A greater implication of these experiences may be their influence on long term international relationships. Few qualitative studies have been conducted that examine the dynamics of the cultural integration of Saudi students with American students during the acculturation process.

The purpose of this qualitative research, therefore, is to describe and interpret the experiences and perceptions of Saudi Arabian students as they …

Rubrics As A Tool For Reaching Explicitly Evaluative Conclusions: Implications For Evaluation Theory, Training, And Practice, Krystin S. R. Martens

Dissertations

Evaluation is the systematic determination of merit, worth, or significance. A core professional evaluator competency is to provide transparent and explicit evaluative conclusions. Yet, “understanding the reasoning process to establish evaluative conclusions drawn in practice has to be the field’s greatest unmet challenge” (Fournier, 1995, p. 1). This three-article dissertation studies rubrics as a tool that can assist in meeting the stated challenge when used by program evaluators to reach explicitly evaluative conclusions.

Study 1 provides an account of the history and etymology of the term rubric and provides an analysis of peer-reviewed program evaluation literature, specific to the extent …

Assessing The Impact Of Historical Story Telling On Student Learning Of Natural Selection, Janice Marie Fulford

Dissertations

Research suggests that because of its historical nature, the learning of evolutionary biology is problematic compared to that of other science disciplines. While explanations used in historical sciences often employ historical narratives, which are distinct from narratives in other contexts, such as stories, the two types of narratives have structural similarities that suggest the potential role of stories based in the history of science for the teaching of evolutionary biology. Stephen Klassen, a prominent science educator, has studied how stories from the history of physics can promote the learning of and attitudes towards science. Klassen’s pioneering work identifies structural components …

Patterns Of Olfactory Neurogenesis And Immune Response In Adult Zebrafish Following Damage Of The Olfactory Bulb, Darcy M. Trimpe

Dissertations

The adult zebrafish olfactory system, with its persistent neuronal turnover and abundant regenerative capacity, is an excellent model system for studies of adult brain plasticity. Reversible deafferentation, achieved by repeated intranasal irrigation with detergent, reduces bulbar innervation and affects bulb structure and function, while cessation of treatment permits reinnervation and recovery of bulb volume. Alterations in cell genesis may account for this phenomenon. This study focuses on adult neurogenesis in the zebrafish olfactory system following reversible deafferentation and direct olfactory bulb injury.

Potential alterations in cell proliferation, differentiation, migration, and survival in the olfactory bulb following single and repeated intranasal …

3d Printed Bone Supplement Materials, Azem Khalifa Yahamed

Dissertations

Three-dimensional (3D) printing is an advanced rapid technology that can be used to make human bone substitutes with exact shape and designed structures, based on models created from actual individual bone medical Digital Imaging and Communications in Medicine (DICOM) images. Biocompatible polymers have been selected for 3D printing of human bone structures. The thermoplastics were 3D printed with Fused Deposition Modeling (FDM) are Acrylate Butadiene Styrene (ABS), Polylactic Acid (PLA) and ULTEM 9085 (a polyetherimide). The polyamide PA 2200 was 3D printed using Selective Laser Sintering (SLS). Digital ABS (a crosslinked acrylic polymer) was 3D printed using PolyJet Technology. These …

The Experience Of Teachers And Deans In An Intensive Weekly Observation/Feedback Model, Kathleen A. Grinwis

Dissertations

This phenomenological study looked at the lived experiences of 12 teachers and deans participating in an intensive weekly observation/feedback model in several charter school academies. In this model, teachers and deans work to grow as educators and to reach their professional development goals. While we know that a major factor in increasing the proficiency rate of our students is improving teacher effectiveness, not as much is known about how to provide the necessary guidance for teachers’ professional growth and efficacy development. The challenge for leaders is to develop effective systems of supervision that support teachers and administrators as they work …