Digital Commons Network^™

Uncovering Roots Of Systemic Oppression Within Law Enforcement: A Qualitative Study Exploring Why Police Officers Discriminate Against The Black Community, Alexandra Bouziotis

Dissertations

“Uncovering roots of systemic oppression within law enforcement: A qualitative study exploring why police officers discriminate against the Black community.” Rationale for this study is to uncover behavior and psychological reasons to uncover why police discriminate and oppress the Black community with little consequences for their actions. The dominant explanation for this trend uncovers previous research addressing oppression and the structure of institutions such as law enforcement that have relied heavily on past policies and tactics protecting an institution in the United States that has rarely been challenged. Recent riots and civil unrest against law enforcement institutions and dominant laws …

The Latino Achievement Gap: The Role Of Teachers In The Success Or Failure Of Latino Students, Sandra Gonzalez-Adamski

Dissertations

Understanding that the academic achievement of Latino students continues to lag behind their White peers, this study explored the role of the teacher in the success or failure of Latino school-age children. The methodology utilized for this research was qualitative. I used a narrative approach to discuss the thoughts, opinions, and insights of the six teachers interviewed for this study. The in-depth conversations with the participants suggested differences in how Latino and White teachers view their Latino students. Most of the White teachers suggested that academic achievement can be reached through explicit vocabulary instruction, reading a wide variety of books, …

A Case Study Of A Math Teacher Of Black Students: Examining Instruction That Addresses The Content Knowledge Gap Through Culturally Relevant Instruction, Theartris Childress Iii

Dissertations

This program evaluation focuses on the teaching practices of one Chicago Public School math teacher who has demonstrated success over time in the achievement of African American students. The primary research question explored how educators and leaders can learn from best practice research and case studies of exemplary math instruction the instructional and pedagogical skills needed to work effectively with African American students. Employing a qualitative research methodology, with data gathered from teacher interviews and other stakeholders, and observations, this study identified key components to improve mathematics instruction and culturally proficient practices. Policy recommendations and implications illustrate the need for …

Positive Symptoms Of Schizophrenia And Suicide: A Systematic Review Of Gender, Race/Ethnicity, And Premorbid Iq Variables, Susan Diann Paschall

Dissertations

Schizophrenia is an exceptionally debilitating mental disorder. Its effects permeate all facets of psychosocial functioning and it is associated with premature mortality. As such, suicide is of clinical concern. Positive symptoms such as hallucinations and delusions may influence the risk of suicide among individuals diagnosed with schizophrenia, but additional research is necessary, as the limited literature on this topic is dated and includes heterogeneous results. Early recognition of and intervention for suicide risk factors, such as the presence of positive symptoms of psychosis, may reduce mortality rates for individuals with schizophrenia. The present literature review examined the role of gender, …

The Acquisition Of Dental Competencies And Clinical Skills: Perceptions From Students, Faculty, Practicing Dentists And Industry Professionals In The Dominican Republic, Laura Virginia Reyes Alardo

Dissertations

The Dominican healthcare system faces many challenges, and dental education is not an exception. The lack of competencies established for dentistry is one of the most critical challenges that dentistry faces. There is no way to guarantee that all dentists receive the same quality education with no standards and lack of competencies. Previous research has revealed that the competencies achieved by dental students determine the way such students develop their professional practice in the future as dental graduates (Alcota, De Gauna, & González, 2016). However, there is a lack of shared language observed in dental education around the world. Not …

Exposure And Handling Practices Of Healthcare Professionals For Cytotoxic Drugs In The Workplace Environment, Laila Masoud Al Alawi

Dissertations

Introduction: Occupational exposure to cytotoxic drugs is associated with various unfavorable health outcomes. There is currently no safe level for occupational exposure to cytotoxic agents. Healthcare workers’ adherence to cytotoxics control measures is of primary importance to minimize the risk from exposure to these agents.

Aims: To develop a protocol for a systematic review and meta-analysis on environmental assessment of cytotoxic drugs in healthcare settings and conduct an environmental assessment study of cytotoxic drugs in two Oncology centers of Abu Dhabi, United Arab Emirates (UAE). In addition to evaluate pharmacists’ and nurses’ Knowledge, Attitudes, and Practices (KAP) towards handling of …

Insights Into The Packaging Of Mouse Mammary Tumor Virus (Mmtv) Genomic Rna By Identifying Pr77ᴳᴬᴳ Binding Sites Involved During Its Selective Encapsidation, Akhil Chameettachal

Dissertations

Selective encapsidation and/or packaging of retroviral genomic RNA (gRNA) by Gag during retrovirus assembly is a crucial step for generating infectious virus particles. Despite having been studied extensively, the mechanism by which the retroviral Gag precursor selects and packages the retroviral genome remains largely unclear. Therefore, to understand the molecular mechanism(s) of mouse mammary tumor virus (MMTV) gRNA packaging, as a first step, expression of full-length recombinant Pr77^Gag -His6-tag fusion protein in bacteria was done. The recombinant Gag protein was then purified from the soluble fractions of bacterial cultures using immobilized metal affinity chromatography (IMAC) and size exclusion chromatography …

Chemical And Biological Control Of Canker Disease Of Delonix Regia Caused By The Fungus Neoscytalidium Dimidiatum, Seham Mohammed Al Raish

Dissertations

In the United Arab Emirates (UAE), royal poinciana (Delonix regia) trees suffer from stem canker disease. Symptoms of stem canker can be characterized by branch and leaf dryness, bark lesions, discoloration of xylem tissues, longitudinal wood necrosis and extensive gumming. General dieback signs were also observed leading to complete defoliation of leaves and ultimately death of trees in advanced stages. The fungus, Neoscytalidium dimidiatum DSM 109897, was consistently recovered from diseased royal poinciana tissues; this was confirmed by the molecular, structural and morphological studies. Phylogenetic analyses of the translation elongation factor 1-a (TEF1-α) of N. dimidiatum from the …

The Role Of Nutrient Sensitive Protein O-Glcnacylation In Developmental Cortical Neurogenesis, Shama Parween

Dissertations

The nutrient responsive O-GlcNAcylation is a dynamic, posttranslational protein modification present on many nucleocytoplasmic and mitochondrial proteins. Previous research has indicated that hyperglycaemia increases the levels of total O-GlcNAcylation within cells. Transcription factors and histones are among hundreds of proteins that have been reported to be O-GlcNAcylated and have importance in cell fate determination during cell growth, proliferation, and differentiation. However, the role of protein O-GlcNAcylation in epigenome control in response to nutritional perturbations is poorly understood. Hyperglycaemia induced protein O-GlcNAcylation have been linked to several pathologies, including obesity, diabetes, cancer, cardiovascular and neurodegenerative diseases. …

Epigenetic Modifications In Metabolic Syndrome: Identification And Evaluation Of Early Indicators Using A Rodent Model System, Ashok Daniel Pragasam

Dissertations

It is increasingly realized that mechanisms of developmental plasticity rather than pathology independently facilitate the size of developing embryos during early development. Changes in the early developmental environment alter the metabolic traits resulting in diseases, including metabolic syndrome, including type 2 diabetes and obesity in adulthood. Molecular and epidemiological studies have documented an association between Lower Birth Weight (LBW) and increased risk of developing metabolic syndrome. Henceforth, using birth weight as a marker, two groups of normal birth weight range rat pups, Lower Birth Weight (LBW, 5th to 25th percentile) and Average Birth Weight (ABW, 50th to 75th percentile) as …

Flaxseed’S Paradoxical Role In Extending Lifespan And Reproductive Capacity In White Leghorn Laying Hens; And The Effect Of Polyunsaturated Fatty Acids (Pufas) On Lipid Metabolism, Mitochondrial Bioenergetics And E-Cadherin Expression In Laying Hen Ovarian Tumors, William Christopher Weston

Dissertations

We are the first lab to report the occurrence of a diet-induced transsulfuration (TS) blockade associating with elevated S-adenosylmethionine (i.e. SAM) synthesis, enhanced lifespan and enhanced reproductive capacity, in a vertebrate animal model. In this paradoxical study, we used LC-MS/MS-derived metabolomics data to report the effects of flaxseed (Linum Usitatissimum) on one-carbon metabolism in White Leghorn laying hens (Gallus gallus). Flaxseed contains a vitamin B6-antagonizing molecule called ‘linatine’ that is particularly effective at reducing vitamin B6 levels in small rodents and poultry. Linatine reduces TS flux through its inhibition of the vitamin B6-dependent enzymes cystathionine beta synthase (CBS) and cystathionine …

Black Men’S Perception Of Their Father-Son Relationship, Shaakira E. Jones

Dissertations

The purpose of this study is to investigate the perceptions that Black men have of their relationships with their fathers, specifically, adult sons’ retrospective perceptions of their fathers’/father figures’ involvement and nurturance during childhood, and their current emotional availability. The aim is also to explore whether perceptions of their fathers predict Black men’s current psychological well-being. The following measures are used: (a) a demographic questionnaire, (b) the Nurturant Fathering Scale (NFS, Finley & Schwartz, 2004; Williams & Finley, 1997), (c) the Father Involvement Scale (FIS, Finley & Schwartz, 2004), (d) the Lum Emotional Availability of Parenting Scale (LEAP; Lum & …

Michigan Municipal Manager Perceptions On Lgbtq+ Inclusion: A Narrative Policy Framework Case Study, Christopher R. Surfus

Dissertations

This study explores the knowledge, attitudes, and perceptions (KAP) of municipal managers regarding the LGBTQ+ community in three Michigan cities—Grand Rapids, Holland, and Kalamazoo. The purpose is to understand managers’ beliefs and attitudes towards the LGBTQ+ community and how policies are implemented and enforced to reduce discrimination. The specific research questions deal with how the beliefs and attitudes of public managers reflect an understanding of and competency on LGBTQ+ issues, how they are affected by the presence of LGBTQ+ staff members, and how they differ from the actual policy provisions affecting the LGBTQ+ community. These questions are examined in the …

Selective Neural Stimulation By Leveraging Electrophysiological Diversity And Using Alternative Stimulus Waveforms, Bemin Ghobreal

Dissertations

Efforts on finding the principle mechanism for selective neural stimulation have concentrated on segregating the neurons based on their size and other geometric factors. However, neuronal subtypes found in different parts of the nervous system also differ in their electrophysiological properties. The primary objective of this study is to investigate the feasibility of selective activation of neurons by leveraging the diversity seen in passive and active membrane properties.

Using both a local membrane model and an axon model based on the CRRSS, the diversity of electrophysiological properties is simulated by varying four model parameters (membrane leakage-Gleak and capacitance-Cm, temperature coefficient-Ktemp, …

These Fish Were Made For Walking: Morphology And Walking Kinematics In Balitorid Loaches, Callie Hendricks Crawford

Dissertations

Terrestrial excursions have been observed in multiple lineages of marine and freshwater fishes. These ventures into the terrestrial environment may be used when fish are searching out new habitat during drought, escaping predation, laying eggs, or seeking food sources. The physiological demands for life under water and on land are vastly different and require different functional adaptations. Fish with terrestrial excursions must be capable of dealing with the stresses of both aquatic and terrestrial environments for varying periods of time. To deal with these stresses, amphibious fishes exhibit many morphological and behavioral adaptations. These adaptations have led to a range …

Methods For Extending Biomedical Reference Ontologies And Interface Terminologies For Ehrr Text Annotation, Vipina Kuttichi Keloth

Dissertations

Biomedical ontologies and terminologies are a cornerstone in various electronic health record systems (EHRs) for encoding information related to diseases, diagnoses, treatments, etc. Ontologies in general represent entities (concepts) and events along with all interdependent properties and relationships in an efficient way to facilitate easy access, retrieval and sharing. With the landscape of medicine rapidly changing, biomedical ontologies and terminologies need to rapidly evolve to support interoperability, medical coding, record keeping, and healthcare activities in general, and to facilitate interdisciplinary research. Extending ontologies by identifying new and missing concepts plays a vital role in the maintenance of ontologies to keep …

Reconstituting The Cyanobacterial Circadian Clock In Vitro, Pyong Hwa Kim

Dissertations

Cyanobacteria are photosynthetic organisms that are known to be responsible for oxygenating Earth’s early atmosphere. Having evolved to ensure optimal survival in the periodic light/dark cycle on this planet, their genetic codes are packed with various tools, including a sophisticated biological timekeeping system. Among the cyanobacteria is Synechococcus elongatus PCC 7942, the simplest clock-harboring organism with a powerful genetic tool that enabled the identification of its intricate timekeeping mechanism. The three central oscillator proteins—KaiA, KaiB, and KaiC—drive the 24 h cyclic gene expression rhythm of cyanobacteria, and the "ticking" of the oscillator can be reconstituted inside a test tube just …

Development Of Deep Learning Neural Network For Ecological And Medical Images, Shaobo Liu

Dissertations

Deep learning in computer vision and image processing has attracted attentions from various fields including ecology and medical image. Ecologists are interested in finding an effective model structure to classify different species. Tradition deep learning model use a convolutional neural network, such as LeNet, AlexNet, VGG models, residual neural network, and inception models, are first used on classifying bee wing and butterfly datasets. However, insufficient data sample and unbalanced samples in each class have caused a poor accuracy. To make improvement the test accuracy, data augmentation and transfer learning are applied. Recently developed deep learning framework based on mathematical morphology …

Impact Of User Traversal On Performance Of Stem Learners In Immersive Virtual Environments, Eric W. Nersesian

Dissertations

The emerging technologies of augmented and virtual reality (AR/VR) may have vast implications to societal communication and representation of information. AR/VR computer interfaces are unique in that they may be placed spatially around the user in three-dimensional (3D) space; this affords new methods of both presentation and user interaction with the target information.

This may be especially impactful in the education of science, technology, engineering, and mathematics (STEM) professionals. Prior research has shown that simulations and visualizations improve the performance of STEM learners compared to live instruction and textbook reading. Yet, research into AR/VR as a learning environment for widespread …

Electric Field Induced Self-Assembly Of Mesoscale Structured Materials And Smart Fluids, Suchandra Das

Dissertations

This dissertation aims to study the forces that drive self-assembly in binary mixtures of particles suspended in liquids and on fluid-liquid interfaces when they are subjected to a uniform electric or magnetic field. Three fluid-particle systems are investigated experimentally and theoretically : (i) Suspensions of dielectric particles in dielectric liquids; (ii) Suspensions of ferromagnetic and diamagnetic particles in ferrofluids; and (iii) Dielectric particles on dielectric fluid-liquid interfaces. The results of these studies are then used to estimate the parameter values needed to assemble materials with desired mesoscale microstructures.

The first fluid-particle system studied is an electrorheological (ER) fluid formed using …

Fluorine-Based Inorganic Oxidizers For Use In Metal-Based Reactive Materials, Siva Kumar Valluri

Dissertations

This work explores inorganic fluorides as oxidizers for fuel-rich reactive materials. A preliminary assessment of metal fluorides accounting for their enthalpy of formation points to bismuth (III) fluoride, BiF3 and cobalt (II) fluoride, CoF2 as oxidizers of interest. Initially, composite powders of aluminum with chosen fluorides at 50-50 wt. % are prepared by arrested reactive milling. Despite an increase in reactivity and lowtemperature ignition, the prepared composite powders are insensitive to initiation by electro-static discharge (ESD), making them attractive alternative to analogous thermites having very high ESD sensitivity. In air, the composite powder particles burn faster than reference aluminum particles …

Private Sound Environments In Public Space: Use Of Headphones In Public Parks And Public Transit, Chathurthi S. De Silva

Dissertations

The use of headphones is now so commonplace that it is almost second nature for many people to use them. Not only do these people use headphones all the time, but they use them nearly everywhere, including in urban public spaces. In using headphones, people create their own “private sound environments” in public space. This phenomenon merits attention from researchers since the creation of private sound environments may well alter people’s experiences of public space.

This study answers five research questions about the use of headphones in parks and on transit: why people use them, when they begin using headphones …

Plant-Derived Extracellular Matrix Mimetic Scaffolds For Bone Repair Applications, Jessica Cardenas Turner

Dissertations

Autologous and allogeneic bone grafts are currently used to treat large bone defects or fractures that will not heal. However, for patients with osteoporosis or other conditions that impair the natural bone healing process, such as diabetes, smoking, bed rest, aging, autologous bone graft, which is the patient's own bone, is limited in quantity and its healing potential may be compromised. Allograft bone, or donated bone, lacks the necessary biological activity and has poor integration into defect. There is an urgent need for constructs/grafts capable of promoting bone cell function in fracture healing and large bone defects where the endogenous …

Mechanisms Of Oscillations And Polyglot Entrainment In Neuronal And Circadian Models, Emel Khan

Dissertations

Entrainment is a type of synchronization in which the period of an endogenous oscillator matches the period of an external forcing signal and a stable phase relationship is maintained between them. Entrainment patterns are described in terms of the number of input oscillations (N) that are phase-locked to a number of output oscillations (M), referred to as N:M patterns. Arnold tongue diagrams are used to depict the regions of N:M entrainment patterns in the input period-amplitude parameter space. Although the entrainment of self-sustained oscillators by periodic forcing are well investigated is a well-studied problem, entrainment of damped oscillators has been …

Controlled Reduction Of Graphene Oxide And Graphene Oxide-Carbon Nanotube Hybrids And Their Applications, Samar Azizighannad

Dissertations

Graphene and graphene derivatives are widely used in diverse research and industrial applications. Graphene production on a large scale is carried out by exfoliating graphite oxide and producing graphene oxide (GO), which comprises of graphene sheets with different oxygen-containing functional groups such as hydroxyl, carboxyl, and carbonyl. GO is reduced to reduced graphene oxide (rGO), which has properties that are closer to graphene. Properties of GO and rGO depend upon the oxygen content, and the effect of reducing oxygen content on the aqueous behavior of rGOs is not well understood.

In an effort to understand how properties of rGO change …

Modeling And Analysis Of Intracellular Signaling Networks And Cellular Decisions, Mustafa Ozen

Dissertations

Developing molecular network analysis methods is important due to their applications on complex biological systems such as target discovery, development of drugs, discovering drug effects, and finding treatments for many complex diseases, e.g., cancer, autoimmune, and mental disorders. An example of analysis techniques is the fault diagnosis analysis, in which the purpose is to quantify how much vulnerable the entire network is to dysfunction of one or multiple molecules. Such analysis can be done after proper network models are implemented, trained, and tested against the experimental data. In this dissertation, a Boolean modeling framework is implemented and methods to train …

The Associations Of Chronic Stress, Social Support, Health Behaviors And Metabolic Syndrome Among Hispanic Women, Edna Esquer

Dissertations

The Associations of Chronic Stress, Social Support, Health Behaviors and Metabolic Syndrome Among Hispanic Women

Background: Metabolic syndrome (MetS) prevalence is 25% among Mexican American women 30 – 49 years of age, compared to 22% among non-Hispanic Whites in the United States. Little is known about the additional contributions of chronic stress, social support and health behaviors to the development of MetS among this population.

Purpose: Describe the associations between chronic stress, social support, and health behaviors and the presence of MetS in Hispanic women living in an underserved community.

Methods: A retrospective cohort study design. The Adult Treatment Panel …

Corporal Punishment In Eastern Nigeria, Gerald N. Nwafor

Dissertations

In Nigeria, corporal punishment is used widely in Nigeria’s judicial system, the home, and the classroom. The prevalent opinion in the education community is that corporal punishment helps students learn better and faster, keeps order in the classroom, and promotes a high student performance level. Reliance on corporal punishment is embedded in the religious, cultural, social, and moral beliefs and understanding of life. Corporal punishment takes many forms, but the most common in the school system is caning or flogging, which is the forceful and severe striking of the student’s body, using a stick of wood, usually on the back, …

Unresolved Issue In Education: Disproportionate Disciplining Of Hispanic Students In Education, Richard Ruiz

Dissertations

The disproportionate disciplining of Hispanic students has been a reoccurring issue that has persisted for decades. With the rising Hispanic populations nationwide and in the state of California, this issue must be addressed. Therefore, to contribute to the scholarship of this phenomenon, the author critically examined teacher and administrator perceptions and attitudes about students who embody a stereotypical urban street subculture. The purpose of this convergent parallel mixed-methods study was to examine the interplay of race, cultural capital, community, and communication, with the disproportionate disciplining of Hispanic students in schools where they are a minority population. The findings of this …

The Effects Of Academic Performance, Demographic Characteristics, Work, And Personal Experiences On Admissions To A Clinical Laboratory Science Training Program, Mara Williams

Dissertations

In this study, I sought to discover factors that contributed to candidate success in gaining admission to the San Jose State University Clinical Laboratory Scientist (CLS) Training Program. Social Cognitive Career Theory suggests that the interplay between an individual’s personal characteristics and life experiences lead to self-efficacy expectations, learning experiences, and goal setting which crystalizes their choice of career. To understand these phenomena in the context of CLS candidates, I used quantitative methods to explore the influence of race, gender, age, work, and personal experience on the probability of a candidate gaining an interview or placing for clinical internship in …