Digital Commons Network^™

Factors Contributing To Juvenile Crime Leading To The Disparity Of The Risk Levels For Secure Detainment, Dawn Prystajko

Theses and Dissertations

The main purpose of this research was to explore the factors that contributed to juvenile crime which in turn caused disparity in secure detainment among juveniles. This was based upon the alternate hypothesis that there is a noticeable disparity with minority youths being more securely detained opposed to majority youths. Therefore, the research was designed to examine raw data obtained from the Juvenile Justice Services Planner/JDAI Coordinator of the excel database of juvenile arrests/detainment.

The findings revealed several key points. The finding revealed that useable data extracted from the excel database was not able to neither agree with nor support …

An Examination Of The Scale Of Accurate Personality Prediction’S (Sapp) Test-Retest Reliability Across A Four-Week Period, Taylor Catherine Anderson

Theses and Dissertations

The questions surrounding how well one can truly know him/herself dates as far back as Ancient Greek times, and answering the question has been a difficult task given the complexity of human beings, and a somewhat subjective term such as the “self.” As science and technology continue to advance, so do the attempts to accurately define self-knowledge. Miller (2000) took defining self-knowledge a step further, and developed a test derived from the Sixteen Personality Prediction Questionnaire (16PF) to measure individuals’ level of self-knowledge how well they know themselves, based on their ability to accurately predict their scores on the 16PF. …

Electroencephalogram Signal Processing For Hybrid Brain Computer Interface Systems, Md. Ali Haider

Theses and Dissertations

The goal of this research was to evaluate and compare three types of brain computer interface (BCI) systems, P300, steady state visually evoked potentials (SSVEP) and Hybrid as virtual spelling paradigms. Hybrid BCI is an innovative approach to combine the P300 and SSVEP. However, it is challenging to process the resulting hybrid signals to extract both information simultaneously and effectively. The major step executed toward the advancement to modern BCI system was to move the BCI techniques from traditional LED system to electronic LCD monitor. Such a transition allows not only to develop the graphics of interest but also to …

Extraversion And Person-Environment Fit: Towards Consideration Of Jungian Theory In Organizational Psychology, Nicholas Rosemarino

Theses and Dissertations

Historically, the field of Industrial/Organizational (I/O) Psychology has relied on the Big 5 taxonomy of personality. The purpose of this study was to examine the value of a Jungian conception of extraversion in the context of the relationship between the physical work environment and person-environment (PE) fit. The MBTI and the NEO-IPIP, representing a Jungian and a taxonomic conception of personality, respectively, were hypothesized to predict the within-person relationship between extraverted environment and PE fit. PE fit was hypothesized to predict perceived satisfaction and perceived performance. To examine these hypotheses, 110 participants were recruited from Mturk and responded to 18 …

Racial Identity Development Of Somali Refugees In The Midwest, Nnenna Lindsay

Theses and Dissertations

The number of Somali refugees in the United States continue s to increase, yet research on their racial identity development, racialization experiences, and strategies used to cope with racism and discrimination is lacking. This qualitative study was conducted to explore the unique racial narratives of Somali refugees. In order to better understand how Somalis make meaning of their racial identity and adjust to the contemporary racial climate of the Midwest, in-depth interviews were conducted with seven Somali refugees and a narrative methodology was used to analyze the results. The overarching narrative highlighted the journey to becoming Black for Somali refugees …

Computational Studies Of Oxides Relevant To Clean Energy, Catalytic Processing Of Renewables, And Biological Systems, Jason M. Hicks

Theses and Dissertations

Computational chemistry has grown into a large field and is continuing to grow every year in both number and variety of applications. This dissertation will give a few such applications relevant to cleaner energy production from coal, catalytic degradation of renewable agricultural and forest waste into valuable chemicals, and extending the reach of electronic structure methods to systems of biological and macromolecular interest. The first two studies presented in this dissertation are concerned with the remediation of trace elements released into the environment through the combustion of coal for power production. In flue gases, arsenic and antimony exists most often …

Women Engineering Majors' Choice To Stay: A Phenomenological Exploration Of Persistence Experiences, Victoria Morrissette

Theses and Dissertations

The historical underrepresentation of women in engineering persists for women engineering majors in college and once they enter the workforce. While some engineering disciplines have seen an increase in women students, overall the numbers still have fallen well behind other STEM disciplines despite years of research. Most studies on this issue have been quantitative and have looked at factors associated with why women leave engineering. This qualitative study, in contrast, gave women engineering majors the opportunity to share their experiences in answer to the question of why women choose to stay in an engineering major. Phenomenological methods, including semi-structured interviews, …

Exploring Student Perspectives On Elementary To Middle School Transition Practices, Erin Spies

Theses and Dissertations

Characteristics of effective transition programs include (a) providing realistic experiences of middle school expectations for incoming students, (b) frequent communication with students, parents, and staff, and (c) extensive and ongoing planning, assessment, and redesign of the transition program. While these effective components of a transition program have been recommended based on research, student reflection on essential elements have not been included. The purpose of this study was to use phenomenology research methods to identify components of middle school transition programs from the perspective of middle school students. The study analyzed current transitional practices and their alignment with Schlossberg’s Transition Theory …

Professional Learning Outcomes That Teachers Experience As A Result Of Implementing A Community-Based Instruction Program: A Qualitative Case Study, Suzan Radwan

Theses and Dissertations

The purpose of this qualitative instrumental case study was to explore the professional learning outcomes of teachers as they implement community-based instruction programs for students with disabilities in a New Jersey school district. The study was viewed through the theoretical lens of disabilities studies in education, which posits that the term disability is a socially constructed concept that leads to the systematic social and environmental disadvantage of people with disabilities.

The sample included public school teachers who have participated in a community-based instruction program for students with disabilities in Mountainview Public Schools in New Jersey. Data collection methods included semi-structured …

Objective Measures Of Electrophysiological Responses Of Children With Idiopathic Autism Spectrum Disorder And Phelan-Mcdermid Syndrome To A Contrast-Reversing Checkerboard, Chloe Brittenham

Theses and Dissertations

The heterogeneity of autism presents many challenges in understanding the disorder. The current study employs objective measures to examine visual evoked potential (VEP) responses of children with idiopathic autism (iASD) and Phelan-Mcdermid syndrome (PMS) to a contrast-reversing checkerboard in both long (60-second) and short (2-second) duration conditions.

Una Sensibilità Scientifica: Giacomo Balla’S Painting Of Light, 1900-1914, Luise Mahler

Theses and Dissertations

This thesis examines how science shaped Giacomo Balla’s pioneering style of abstraction. A reconsideration of his oeuvre from 1900 to the advent of Italian Futurism demonstrates that his artistic vision of light—indebted to popular scientific imagery and what might be called "prosthetic" visual technologies—anticipated the emergent Futurist aesthetics.

Post-Representational Presence: Disruptive Actions & Visibility Politics In New Media, Christian Hendricks

Theses and Dissertations

This text is a written component to a master’s thesis in the fine arts. It is a research-intensive text that conventionally examines contemporary conditions of politics and modes of representation, and analyzes the most innovative artists and visual producers working in these areas. However, the text also includes exercise modules with “challenges” for the reader, similar to a textbook. In the modules, the examples provided are works of my own. I also include text, images, and documentation of my own work from my MFA thesis exhibition.

Using Thermography To Monitor Inflammation As A Non-Invasive Supplementary Diagnostic Tool For Mild Traumatic Brain Injury In A Sprague Dawley Rat Model, Sonja Anne Jensen

Theses and Dissertations

Incurring high economic cost due to medical imaging modalities, there is a need for a low-cost, on site, diagnostic screening tool for the early detection of Traumatic Brain Injury (TBI). We hypothesize that patients with TBI will exhibit temporal and spatial gradient dynamics in the thermal signature on the surface of the skin, and that these dynamics reflect the inflammatory process. Hence, we implemented far-infrared (FIR) thermography using a blunt TBI rat model to analyze changes in the external, surface temperature gradient as an indication of internal inflammation. Results show a consistent increase in average surface temperature after 0.5 days …

Application Of Food-Grade Ingredient Treated Nets To Control Tyrophagus Putrescentiae (Schrank) (Sarcoptiformes: Acaridae) Infestations On Dry Cured Hams, Xue Zhang

Theses and Dissertations

Tyrophagus putrescentiae (Schrank) (Sarcoptiformes: Acaridae), also known as the ham mite, may infest dry cured hams during the aging process. The fumigant methyl bromide is currently used to control mite infestations, but eventually will not be available for use since it contributes to the depletion of the ozone layer. The use of ham nets treated with xanthan gum, carrageenan, propylene glycol alginate, propylene glycol (PG), and lard were evaluated for their impact on mite orientation to or oviposition on treated or untreated ham cubes, mite reproduction and population growth over a 10-week period. When nets were infused with gum and …

Application Of Non-Targeted Volatile Metabolomics In Plant Pathology, Jinyan She

Theses and Dissertations

Our study focuses on the application of volatile metabolomics and chemometrics in plant pathology. Specifically, volatile metabolites or volatile organic compounds (VOCs) from the American chestnut tree (Castanea dentata) and its pathogenic fungus Cryphonectria parasitica have been investigated. The American chestnut was once a dominant tree species in the eastern forests of the United States. However, it was nearly devastated by the fungal pathogen C. parasitica. The loss of this tree species has significantly impacted the ecosystem. Therefore, preservation and restoration of American chestnut are crucial. Chapter one provides an overview of mass spectrometry based volatile metabolomics and their implementation …

Structure-Property Relations Of The Exoskeleton Of The Ironclad Beetle (Zopherus Nodulosus Haldemani), Vina Le Nguyen

Theses and Dissertations

In this study, structure-property relationships in the ironclad beetle (Zopherus nodulosus haldemani) exoskeleton are quantified to develop novel bio-inspired impact resistance technologies. The hierarchical structure of this exoskeleton was observed at various length scales for both the ironclad beetle pronotum and elytron. The exocuticle and endocuticle layers provide the bulk of the structural integrity and consist of chitiniber planes arranged in a Bouligand structure. The pronotum consists of a layered structure, while elytron consists of an extra layer with “tunnel-like” voids running along the anteroposterior axis along with smaller interconnecting “tunnel-like” voids in the lateral plane. Energy dispersive X-ray diffraction …

Investigation Of The Directed Self-Assembly Process In Bacteriophage Virus Structures Using The Discrete Element Method, David Peter Mcinnis

Theses and Dissertations

Current researchers have looked to nature to learn how self-assembly processes occur. By understanding the self-assembly process, designers can begin to build strong structural materials that are extremely light weight. The discrete element modeling method was used to gain a better understanding of the directed self-assembly of M13 bacteriophage. This model was parameterized from molecular dynamics simulations at the nanometer scale. Three types of functionalized bacteriophage were studied: Wild-type, 4E, and CLP8. Results showed that Wild-type phage are attracted in a head-to-tail orientation, but repelled in head-to-head orientation. The 4E bacteriophage behaved similarly with a stronger bond in the head-to-tail …

Large-Scale Graph Visual Analytics, Fangyan Zhang

Theses and Dissertations

Large-scale graph analysis and visualization is becoming a more challenging task, due to the increasing amount of graph data. This dissertation focuses on methods to ease the task of exploring large-scale graphs through graph sampling and visualization. Graph sampling aims to reduce the complexity of graph drawing, while preserving properties of the original graph, allowing analysis of the smaller sample which yields the characteristics similar to those of the original graph. Graph visualization is an effective and intuitive approach to observing structures within graph data. For large-scale graphs, graph sampling and visualization are straightforward strategies to gain insights into common …

Microstructural Behavior And Multiscale Structure-Property Relations For Cyclic Loading Of Metallic Alloys Procured From Additive Manufacturing (Laser Engineered Net Shaping -- Lens), Mohammad Ali Bagheri

Theses and Dissertations

The goal of this study is to investigate the microstructure and microstructure-based fatigue (MSF) model of additively-manufactured (AM) metallic materials. Several challenges associated with different metals produced through additive manufacturing (Laser Enhanced Net Shaping – LENS®) have been addressed experimentally and numerically. Significant research efforts are focused on optimizing the process parameters for AM manufacturing; however, achieving a homogenous, defectree AM product immediately after its fabrication without postabrication processing has not been fully established yet. Thus, in order to adopt AM materials for applications, a thorough understanding of the impact of AM process parameters on the mechanical behavior of AM …

Impacts Of Immigration Policy Changes On Employment Of Foreign Born Doctorate Recipients, Jun Cheng

Theses and Dissertations

The H-1B visa program was initiated in 1990 to temporarily hire highly-skilled foreign workers. The H-1B visa program has changed several times since its initiation. One of the most important changes occurred in 2001 when the 21st Century Act exempted individuals employed by institutions of higher education and nonprofit and government research organizations from the H-1B visa cap increasing the number of visas available for foreign high-skilled immigrants. To analyze the impact of policy changes affecting the H-1B program on highly-skilled workers, we study the behavior of foreign-born Ph.D. students who graduated from institutions in the United States over the …

Understanding Molecular Mechanisms Of Host-Edwardsiella Ictaluri Interaction, Nawar Hadi Al-Janabi

Theses and Dissertations

Catfish, the "king" of the U.S. aquaculture, is threatened by a severe, systemic bacterial disease known as enteric septicemia of catfish (ESC). This disease causes high mortality and massive economic losses in cultured channel catfish (Ictalurus punctatus) in the United States. E. ictaluri penetrates catfish intestinal epithelia quickly and establishes a systemic infection rapidly. However, our knowledge on catfish intestine and E. ictaluri interaction is very limited. In Particular, catfish intestinal immune responses and virulence genes needed by E. ictaluri to evade host defenses are not well understood. Hence, our long-term goal is to identify the molecular mechanisms of E. …

Effects Of Leukoreduction And Storage On Erythrocyte Phosphatidylserine Expression And Eicosanoid Concentrations In Units Of Canine Packed Red Blood Cells, Samantha Muro

Theses and Dissertations

Storage of canine packed red blood cells (pRBCs) can increase erythrocyte phosphatidylserine (PS) expression and eicosanoid concentrations. The objective of this study was to determine the effects of leukoreduction on erythrocyte PS expression and eicosanoid concentrations in stored units of canine pRBCs. Units of whole blood were leukoreduced (LR) or non-leukoreduced (non-LR), and stored (10 and 21 days) as pRBCs. Samples were collected at donation, and before and after a simulated transfusion. PS expression was measured by flow cytometry, and concentrations of arachidonic acid (AA), prostaglandin F2α (PGF2α), prostaglandin E2 (PGE2), prostaglandin D2 (PGD2), thromboxane B2 (TXB2), 6-keto-prostaglandin F1α (6-keto-PGF1α) …

Establishing The Structure Function Relationship Of Polypyridyl Ruthenium And Berenil-Type Compounds In The Formation Of Complexes With B-Dna And/Or G-Quadruplex Dna, Clinton Gregory Mikek

Theses and Dissertations

Cancer results from the accumulation of genetic mutations in a normal cell that ultimately result in the expression (or overexpression) of oncogenes. The design of drugs having high affinity for specific DNA sequences or structural motifs is vital to gaining a better understanding of gene expression and to the development of new cancer treatments that are based on turning off oncogene expression. This dissertation presents studies of the binding of two ligand families, Berenil (DMZ), and ruthenium polypyridyl complexes (RPCs), to B-DNA and G-quadruplex (G4) DNA. The structureunction relationships for the interaction of these ligand families with DNA were probed …

Wastewater Remediation Using Modified Biochars, Griffin Allen Burk

Theses and Dissertations

Water polluted by metals and phosphates can be hazardous to both the environment and human health. The aim of this study was used to improve understanding of the adsorption properties of low-cost, green adsorbents for removal of pollutants from aqueous solution. Biochar was used as an adsorbent, which was produced from the gasification of pine wood waste and the fast pyrolysis of Douglas fir. Biochar is a bio-renewable product that can easily be modified, and the cost is lower compared to other adsorbents like activated carbon. The gasifier produced biochar was modified by coating the biochar surface with chitosan. Douglas …

The Characterization Of Zebrafish Natural Killer Cells And Their Role In Immunological Memory, Preeti Judith Muire

Theses and Dissertations

Rag1-/- mutant zebrafish lack lymphocytes and were used to study the basis of acquired protective immunity in the absence of lymphocytes to the intracellular bacterium Edwardsiella ictaluri. This study morphologically identified and quantified lymphocyte like cells (LLCs) present in the liver, kidney and spleen of these fish. LLCs included Natural Killer (NK) cells and non-specific cytotoxic cells (NCCs) and were discriminated by size, and by the presence of cytoplasmic granules. The antibodies anti-NITR9, anti-NCCRP-1 (5C6) and anti-MPEG-1 were used to evaluate these cell populations by flow cytometry. Gene expression profiles in these tissues were evaluated after the Rag1-/- mutants were …

Genome Maintenance By Selenoprotein H In The Nucleolus, Li Zhang

Theses and Dissertations

Selenoprotein H (SELENOH) is a nucleolar oxidoreductase with DNA binding properties whose function is not well understood. To determine the functional and physiological roles of SELENOH, a knockout of SELENOH was generated in cell lines using CRISPR/Cas9-mediated genomic deletion and in mice by targeted disruption. Based on the sequenced genome, the results of deduced protein sequences indicated various forms of mutants in the CRISPR/Cas9-mediated knockout, including a frame-shift by aberrant splicing and truncated SELENOH by early termination of the translation process. Loss of SELENOH in HeLa cells induced slow cell proliferation, the formation of giant multinucleated cells, accumulation of unrepaired …

Genomics And Molecular Approaches To Delineate Pathogenesis Of Aeromonas Hydrophila, Aeromonas Veronii, And Edwardsiella Piscicida Infections In Fish, Hasan Cihad Tekedar

Theses and Dissertations

The U.S. aquaculture industry has become well established in the last three decades, and channel catfish aquaculture is the most significant component of this industry. Virulent Aeromonas hydrophila has been a serious disease problem since 2009 in the U.S. catfish aquaculture, and Aeromonas veronii and Edwardsiella piscicida are emerging pathogens of catfish. Therefore, this study aims to address fundamental questions on virulence mechanisms of these three fish pathogens, which I expect to support the development of control measures for preventing these diseases. In this study, E. piscicida and virulent Aeromonas hydrophila (vAh) genomes were sequenced, and comparative analyses were conducted …

Experimental Development Of Paleoproxies : Investigation Into Anaerobic Conditions And The Amorphous Calcium Carbonate Precursor For Carbonate Minerals, Brittany M. Garner

Theses and Dissertations

Carbonate geochemistry plays an important role in understanding environmental conditions during the time of precipitation. The studies for this dissertation research were focused on carbonate precipitation and crystallization in different chemical and physical environments. The first project aimed to precipitate aragonite at low oxygen levels to identify a correlation between partitioning of trace elements and anoxic and suboxic conditions. The second study focused on the precipitation of amorphous calcium carbonate in varying magnesium concentrations to determine the identity of crystalline material after transformation of ACC. Lastly, the third project was developed to understand transformation of CaCO3 polymorphs. Specifically, whether or …

An Investigative Study Toward The Development Of A Crosslinked Porcine Xenograft Meniscus Total Replacement, Patrick Ehren Barton

Theses and Dissertations

Meniscus damage is very common and eventually leads to the deterioration of the entire knee joint. The goal of this study was to provide evidence that supports a proof of concept for a decellularized porcine meniscal xenograft to be used as a treatment method for meniscal injury as a partial or full meniscus transplant. This research adapted an antigen removal protocol for articular cartilage to produce decellularized xenografts in 48% of the time and with no significant difference in DNA content as other current methods. DNA and GAG content, and the compression moduli were significantly lower in the xenograft than …

Assessing Visual Preference Among Fourth Grade Students For Habitat Components On Educational Green Roofs In Starkville, Mississippi, Amy Counterman

Theses and Dissertations

As urbanization grows wildlife habitat is displaced and fragmented. Vegetative roofs offer an innovative alternative to provide animal food and habitat in urban environments. This research study investigates how wildlife needs in a green roof ecosystem are interpreted through children’s visual perception. A visual preference survey was administered to fourth-grade students in Starkville, Mississippi which offered paired photographs displaying basic vertebrate and invertebrate needs. The responses from 85 students (n=85) were compared to identify preferences for legible habitat components. The results of this survey showed that fourth-grade students could readily identify the basic habitat needs for birds but were less …