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Characterizing The Effects Of Stm And Ath1 Mutations On Floral Organ Development In Arabidopsis Thaliana, James Luke Leary

Honors Theses

The purpose of this project was to explore the function of SHOOTMERISTEMLESS (STM) and ARABIDOPSIS THALIANA HOMEOBOX GENE1 (ATH1), two transcription factors in Arabidopsis thaliana that play a role in the molecular pathways that establish organ boundaries in flowers. Prior research has shownthat mutations in the STM and ATH1 genes cause defects in the boundaries formed between floral organs and the stem of the plant. My study was designed to investigate whether ATH1 and STM also control the boundaries found between adjacent floral organs. I predicted that stm ath1-3 double mutant flowers would display a significant number of stamen-stamen and …

Cell-Free Telomere Dna As A Biomarker For Treatment Response And Tumor Burden In Glioblastoma, John P. North

Honors Theses

Telomeres are repeated nucleotide sequences that cap the ends of each chromosome in eukaryotes. Telomeres are among the earliest genomic sequences to be degraded during apoptosis, potentially providing a biomarker of cell death. To study this, we quantified telomeres in serum from Glioblastoma and non-cancer patients. Cell-free DNA was isolated by centrifugation to remove intact cells, and purified using a QIAamp DNA Blood Midi Kit (Qiagen). Cell-free telomeric (cf-tel) and cell-free actin (cf-actin) DNA were analyzed with quantitative PCR. Total cell-free DNA was measured with PicoGreen assays. We hypothesize that patients with Glioblastoma tumors have higher cf-tel DNA levels than …

Electrocatalytic Oxygen Reduction Studies On Gold Nanoparticles, Leigh Sumner

Honors Theses

After determining that the size of nanoclusters can be tuned such that they have a precise formula much like a chemical compound, much is still not known about nanoclusters, their properties, and how they interact if core size, ligand, and even environment is changed. One such mystery is how does the size of the nanoparticle tune its ability as a catalyst. As it is known that nanoparticles possess unique properties, studies have begun to look towards nanoclusters as catalysts for alternative forms of energy. Therefore, determining how size affects the ability of a nanoparticle catalyst becomes a very important question. …

Women In The Chilean National Identity: How Futbol And Consumption Cultures Affect The Public Sphere, Madeleine Hall Carpenter

Honors Theses

In the past thirty years, Chile has experienced dramatic political, social, economic, and cultural changes. A constant source of national identity, pride, and comfort through this tumultuous period was (and continues to be) fútbol. Chileans follow the sport relentlessly and it is a key part in the construction of local, regional, and national identities. My thesis work aims to answer the following question: how do the relationships between consumption cultures and football create/delineate/eliminate space for women in the overarching social public sphere of national belonging? In order to answer this question, I utilize a mixed methods approach to investigate how …

Attitudinal Changes In Experiential Learning Via Poverty Simulation, Madison E. Bandler

Honors Theses

More than 10% of people living in the United States are impoverished. These human beings are subjected to poor living conditions, experience increased mental and emotional stress, lack basic necessities, and are more susceptible to many health conditions. Lack of poverty awareness and understanding has contributed to the spread of misconceptions, the majority of which are damaging to the impoverished community. These misconceptions affect how impoverished individuals are viewed by health care professionals and influence the quality of medical treatment they receive. The Missouri Community Action Poverty Simulation (CAPS) is an experiential learning tool that requires participants role-play a low-income …

Abortion: Drawing A Line Of Moral Permissibility In Fetal Development, Madison Elizabeth Nash

Honors Theses

The goals of this thesis are to first examine prominent arguments in philosophical and religious ethics regarding the morality of induced abortions, and then to create my own moral argument regarding induced abortion by drawing a line during fetal development. I will first discuss the biological stages of fetal development, the effects of pregnancy on a pregnant woman, and the mechanics of common induced abortion procedures. Next, I will present and analyze renowned philosophical arguments regarding the morality of abortion. Then, I will present and analyze arguments regarding the morality of induced abortions drawn from two religious traditions - Roman …

Personal Space: Explorations Of Environment, Surroundings, And Sense Of Place, Maggie Smith

Honors Theses

This thesis is a mixed collection of prose poetry and creative nonfiction focused on the author's relationship to her surroundings and environment. The poems and essays that make up this thesis are divided into three separate sections based on a shift in environment: childhood in Madison, MS, college in Oxford, MS, and travels outside of the state of Mississippi. While much of this thesis concerns natural environment and landscape in terms of its relationship to the author, the term environment also includes relationships with friends, family and lovers, abstract environments of educational institutions like Catholic school and public university, and …

The Effect Of Social Media Addiction On Consumer Behavior: A Cultural Comparison Of Spain And The United States, Margaret Chambers

Honors Theses

This paper will look at the new issue of social media addiction, how it has affected consumers' behaviors and their interactions with companies, and whether cultural components play a role in this. It will specifically look at the differences between the Spanish and American cultures. I conducted literature searches from the databases in the University of Mississippi library. I researched social interaction theories, social media, The Addiction Theory, and compared the two cultures. The second source of research I used was primary observational research conducted while I lived in Barcelona for five weeks. The observations were made at different points …

The Role Of Cannabinoids And Terpenes In Cannabis Mediated Analgesia In Rats, Margaret A. Rousseau

Honors Theses

Objective: This research examined the contributions of terpenes (volatile oil) and cannabinoids in cannabis mediated analgesia in rats. Methods: In experiment 1, separate groups of rats received IP administration of either vehicle, 5, 10, or 15 mg/kg cannabis extract, one of three concentrations of volatile oil alone in these cannabis extracts, one of three concentrations of these extracts with volatile oils removed, 2.5, 5, or 7.5 mg/kg Δ9-THC, or 10 or 18 mg/kg morphine 30 m before hotplate and tail-flick tests of thermal nociception. One week later, separate groups of rats received a second administration of these test articles IP …

Arl2bp, A Novel Ciliopathy Protein, Is Required For Cilia Microtubule Formation, Abigail Ruth Moye

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cilia are specialized organelles essential for cellular function. Not surprisingly, mutations in cilia- related genes are linked to multi-syndromic diseases termed ciliopathies. These include blinding diseases such as retinitis pigmentosa (RP). One such novel gene is ARL2BP (ARL2-binding protein) and is linked to RP and situs inversus (organ reversal) in humans, a phenotype produced by defects in the nodal cilia of developing embryos. Defects in photoreceptor cilia, as well as situs inversus in human patients, suggest that ARL2BP plays an invaluable role in the structure and function of cilia. However little is known about the role for this protein in …

Characteristics Of Activated Carbons Produced From Herbaceous Biomass Feedstock, Oluwatosin Jerry Oginni

Graduate Theses, Dissertations, and Problem Reports (ETD)

Energy security and environmental protection are at the forefront of research due to the forecasted depletion of fossil fuel reserves and the growing concern of its adverse environmental impacts. The use of renewable sources for energy applications has centered on the use of biomass feedstocks and this include from herbaceous, woody, agricultural waste, forest residues and municipal wastes. The thermochemical conversion (pyrolysis) of these biomass feedstocks has potential to produce liquid fuel, a solid residue (biochar) and non-condensable gas. The biochar is primarily composed of renewable porous carbon and other inorganic compounds. The biochar is used for soil amendment, adsorption …

Wintering American Black Duck Ecology Of Central Appalachia, Sara E. Yannuzzi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The American black duck (Anas rubripes) is a species of dabbling duck found only in the northeastern part of North America, and widely hunted until its decline. Since the 1950s, the total population has decreased by 53%. Habitat degradation and decline of wintering and breeding wetlands, historic overharvest, and interactions with the mallard (A. platyrhynchos) are attributed as some of the main causes of the black duck population’s decrease. Many policies and taxa- and habitat-specific joint ventures have since been created to aid in studying and improving North American wetlands and black duck populations throughout both their breeding and wintering …

Using Artificial Intelligence And Machine Learning To Develop Synthetic Well Logs, Marwan Mohammed Alnuaimi

Graduate Theses, Dissertations, and Problem Reports (ETD)

There has been an increase in the need for energy in the recent past. Oil and gas stand as the source of energy that are widely used. The oil and gas reservoirs are targeted for the purposes of field development. The conventional methods of reservoir characteristics require computing techniques that are unique and complex, some of which are labor and time intensive. Mohaghegh argues that all efforts must be tried and made possible to apply Petroleum Data analytics in production and management of reservoir so as to earn a maximum return (Mohaghegh, Shale Analytics, 2017). Different methodologies have been applied …

Sex Differences In Outcomes After Stroke In Patients With Diabetes In Ontario, Canada., Mandip S. Dhamoon, John W. Liang, Limei Zhou, Melissa Stamplecoski, Moira K. Kapral, Baiju R. Shah

Department of Neurology Faculty Papers

BACKGROUND: Outcomes after stroke in those with diabetes are not well characterized, especially by sex and age. We sought to calculate the sex- and age-specific risk of cardiovascular outcomes after ischemic stroke among those with diabetes.

METHODS: Using population-based demographic and administrative health-care databases in Ontario, Canada, all patients with diabetes hospitalized with index ischemic stroke between April 1, 2002, and March 31, 2012, were followed for death, stroke, and myocardial infarction (MI). The Kaplan-Meier survival analysis and Fine-Gray competing risk models estimated hazards of outcomes by sex and age, unadjusted and adjusted for demographics and vascular risk factors.

RESULTS: …

Understanding Socialization Efficacy And Loneliness Of Baby Boomers Through Facebook, Lindsay Ballinger

Walden Dissertations and Doctoral Studies

Baby boomers are the largest age cohort in the United States, making up approximately 20% of the population. This cohort is faced with global problems that contribute to perceived loneliness and a lack of socialization. Additionally, baby boomers have an increased online presence on Facebook (FB), yet little is known about this age group and FB use. This research study addressed this issue with an examination of the relationships between overall perceived loneliness, socialization efficacy, and FB use. The theoretical framework that guided this study was Bandura's social learning theory, which was used to examine the effects of social reinforcement. …

Investigating Relationships Among Counselors' Gender, Race, Multicultural Competency When Counseling Sexual Minorities, Laverne Marie' Boone

Walden Dissertations and Doctoral Studies

Gay and lesbian individuals are marginalized, stigmatized, and can face bias in the counseling environment. There is a gap in the literature regarding research on gender, race, and multicultural competency and negative racial attitudes towards sexual minorities. This study examined whether multicultural competency (measured by the Multicultural Counseling Knowledge and Awareness Scale) moderates any associations of gender and race with attitudes towards sexual minorities (measured by Attitudes Towards Lesbians and Gay Men Scale) to examine if the role of multicultural competency differs across groups. The sample consisted of 20 White and 14 Non-White participants who were between 30-40 years of …

The Lived Experiences Of Managing Uncertainty In Chronic Illness, Amanda Brown

Walden Dissertations and Doctoral Studies

Chronic illness is an increasing concern in the United States as the CDC reports that about 50% of adults have at least 1 chronic illness. When individuals must adjust to chronic illness they may experience uncertainty regarding the illness, prognosis, and symptoms. The purpose of this qualitative, phenomenological study was to explore the lived experiences of individuals living with uncertainty in chronic illnesses. A Merle Mishel's uncertainty in illness theory was the framework used to explore the lives of individuals diagnosed and living with chronic illness. In-depth interviews were conducted with 8 individuals who have chronic disease; data were audio-recorded …

Credit Recovery And Grade Point Average In An Alternative High School System, Antoinette Marie Cunningham

Walden Dissertations and Doctoral Studies

Abstract

The dropout rates of African American and Hispanic students in the United States are significantly higher than that of White students. Failure to obtain a high school diploma has adverse economic and social implications for these students and for society. The purpose of this study was to assess the relationship between a credit recovery program with key demographic variables and high school GPA, which is a graduation antecedent, for students in an alternative school. Knowles' framework of adult learning theory was used to examine how participation in the credit recovery process in a system of predominantly African American-serving alternative …

Understanding E-Learning As Professional Development For Rural Child Welfare Professionals, Linda S. Kingery

Walden Dissertations and Doctoral Studies

Ongoing professional development is an integral part of a child welfare agency's strategy toward the provision of services to children and families involved with a child welfare intervention. Electronic learning (E-Learning) is popular as a fiscally responsible and flexible way to deliver such trainings. There is a gap in the research addressing the problem of how child welfare professionals are motivated to engage in the E-learning process. The purpose of this qualitative case study was to explore the perceptions of child welfare professionals regarding their motivation to use an agency provided E-learning program. Eight child welfare professionals employed by a …

Influence Of Distributed Reporting Of Terror Violence On Implicit Associations Of Individuals, Carter Matherly

Walden Dissertations and Doctoral Studies

Following the 9/11 terror attacks, many Americans experienced some form of habit or mood-altering stress though, most had received their impressions of the violence via distributed media reporting rather than firsthand exposure. Researchers have found that the propagating effects of media broadcasting can exasperate the effects of terror. However, little is known of how reports of terror violence affect group dynamics in geographically distant nations. The purpose of this study, following terror management theory, was to understand if terrorist violence influences cognitive and implicit racial evaluations in a culturally similar, but geographically distant, population. The study's design was a quantitative …

Perceptions Of Mathematics Teachers Regarding Common Core State Standards And Formative Assessment, Julie Gale Mest

Walden Dissertations and Doctoral Studies

The adoption of the Common Core State Standards has necessitated a change in the instructional practices used by many mathematics teachers. The new standards encourage problem solving and the development of conceptual understanding rather than rote memorization of formulas and rules. Researchers have demonstrated that formative assessment is a powerful instructional tool that, when implemented properly, can increase student achievement. The purpose of this quantitative study was to determine how mathematics teachers in Pennsylvania perceive the new standards; how they value and use formative assessment practices including involving students in their work, modeling quality work, providing feedback, and providing opportunities …

Assessing Executive Functioning In Young Children With Autism Spectrum Disorder, Julie Johnson Miller

Walden Dissertations and Doctoral Studies

This study examined the inconsistency within research surrounding the relationship between executive functioning skills and autism symptomology in those being assessed for autism in early childhood (e.g., 34 to 60 months of age). Inconsistencies in current research connecting autism symptomology and executive dysfunction affect the best practice of practitioners that assess for disabilities. This study aimed to identify correlations between autism symptomology and executive functioning skills and whether combining autism symptomology and executive functioning skills assessments provide a more reliable classification as autism or non-autism. The framework foundation drew upon research that determined connections between those suffering from traumatic brain …

Long-Term Health Impacts Of Cell Phone-Driven Radiofrequency Radiation Exposure In Humans, Ndukaku Omelu

Walden Dissertations and Doctoral Studies

Uncertainties still exist about the safety of cell phone use and the level of cell phone-driven radiation. The purpose of the current inquiry was to determine the long-term health impacts of cell phone-driven radiation via the use of cell phones. In this cross-sectional study, which was based on socio-ecological theory, secondary data from the 2012 National Health Interview Survey were analyzed to assess the difference in the prevalence of thyroid cancer, mouth/tongue/lip cancer, and heart disease between exposed and non-exposed/less exposed cell phone-driven radiation groups in the United States. Logistic regression was used to address three research questions. Findings initially …

Strategies Of Successful Government It Projects Based On Cost And Time, Ullice John Pelican

Walden Dissertations and Doctoral Studies

From 2001 through 2015, some information technology (IT) project managers failed to deliver U.S. Government IT projects on time and within budget. The failure of IT project managers to complete projects on time and within budget provoked the U.S. Government Accountability Office to classify IT projects as high risk. This multiple case study explored strategies government contracted IT project managers use to reduce cost overruns and improve on-time delivery. The participants in this study were government contracted IT project managers from organizations that provide IT project management in the Maryland area. Employing purposeful sampling of the explicit population, 5 selected …

Factors Affecting Colorectal Cancer Screening Among African-Born Immigrants In The United States, Chidoziri Chibundu

Walden Dissertations and Doctoral Studies

Despite the evidence that colorectal cancer screening is effective in reducing the incidence of and mortality from colorectal cancer, racial and ethnic disparities in colorectal cancer screening persist in the United States. African-born immigrants in the United States have lower colorectal cancer screening rates than native-born Americans. The purpose of this quantitative, retrospective, cross-sectional study was to examine how family income, health insurance status, language of interview, length of stay in the United States, perceived health status, level of education, and having a usual place for medical care affect colorectal cancer screening among African-born immigrants in the United States. The …

Perceived Cardiovascular Risk Among West Africa Immigrants In Dekalb County, Georgia, Oluwayomi Fabayo

Walden Dissertations and Doctoral Studies

West African immigrants appear to carry a heavier burden of hypertensive heart disease than the native-born African Americans in the United States. In this study, I used the socioecological model theory as a guide to examine the association between perceived stress, length of stay in United States, smoking status, housing conditions, and the risk of hypertensive heart disease among West African immigrants, ages 18 - 54 years in DeKalb County, Georgia. In this quantitative, cross-sectional design, self-reported data were collected from a sample of West African immigrant (N=107) in the DeKalb County of Georgia, using a demographic data/screening sheet and …

Increasing Permanent Home Placements For Children With Diagnosed Disabilities In Foster Care, Adina Ekwerike

Walden Dissertations and Doctoral Studies

In the United States, 397,000 children received foster care services in 2012. Some states successfully achieved permanent homes for children with diagnosed disabilities who exited care while others were less successful. Using change theory and social ecological theory as the foundations, the purpose of this study was to determine the impact that diagnosed disabilities had on permanent home placements among Pennsylvania's foster care children who were discharged and were between ages of 0 to 6 years in 2012. Hernandez's and Hodges's theory of change was used to evaluate the 1982 standards that license foster care agencies, while Stokol's ecological theory …

Individual Ability To Learn A Parallel Processing Technique And Musical Aptitude., Daniel Warren Emmett

Walden Dissertations and Doctoral Studies

Correlations between music training and psychosocial skills, sensory abilities, and aspects of intelligence, are sorted into primary or secondary effects. Correlations between these areas of human development and music training lack support pertaining to the underlying cognitive networks that these processes rely on. Thus, this study was based on the work of Baddeley and Hitch's model of working memory, and implemented a test of parallel processing (Articulatory Suppression Task, AST), which measures proficiency of working memory systems. Individual differences therein, were compared with music aptitude. Participants were gathered throughout urban and rural regions of the state of Oregon. Half the …

Experiences Of Current Or Former Homeschool Students Who Report Adhd Symptoms, Melissa Felkins

Walden Dissertations and Doctoral Studies

Homeschooling is currently the fastest-growing educational population in the United States with an estimated 2 million students. Because 11% of school children have been diagnosed with attention deficit/hyperactivity disorder (ADHD), there are likely to be many children with ADHD symptoms in the homeschooling population. The purpose of this study was to extend knowledge of the experiences of homeschooling in this population to assist students with ADHD as well as their parents and educators to make informed educational decisions. The multiple intelligences theory provided the theoretical framework for this phenomenological study. The key research question was focused on how current or …

Use Of Hpv Vaccination For Cervical Cancer Prevention In African American Women, Diamond Diane Hanson

Walden Dissertations and Doctoral Studies

Despite the availability of the human papillomavirus (HPV) vaccine, African American women are still at risk for contracting HPV. This is significant because HPV is one of the main risk factors for cervical cancer. The purpose of this quantitative study was to explore the relationship between the use of HPV vaccination for cervical cancer prevention and personal history of HPV, reduced access to healthcare, and risky sexual behaviors in African American women. The theoretical framework used for this study was the health belief model (HBM). Two hundred twenty-nine (n=229) African American women living in the United States, ages 18-49, who …