Digital Commons Network^™

Cannabidiol, Behavior, And Immune Biomarkers In Idiopathic Autism Spectrum Disorder., Sarah Huang Shrader

Electronic Theses and Dissertations

Autism Spectrum Disorder (ASD) is a highly heterogenous neurodevelopmental disorder currently estimated by the CDC to affect 1 in 36 children in the U.S.. This uniquely human condition is characterized by a spectrum of symptoms that feature social communication deficits and repetitive behaviors with restricted interest. Autistic individuals commonly exhibit multiple comorbidities, including attention deficit hyperactivity disorder, anxiety, and seizures, which can complicate an already multi-faceted presentation. The majority of ASD cases are idiopathic in nature. Developing a well-validated animal model of ASD for translational research comes with many challenges, but is crucial for advancing our understanding of autism and …

Characterization Of The Impact Of Prenatal Cigarette Smoke Exposure On Age- And Sex-Specific Sirt1-Mediated Hepatic Molecular Phenotype In C57bl/6 Mice., Kendall S. Stocke

Electronic Theses and Dissertations

In the U.S., 7.2% of women still report having smoked at some point during pregnancy despite known risks to fetal health. Prenatal cigarette smoke exposure (CSE) in children puts them at risk for low birth weight, premature birth, and other adverse impacts on developmental and postnatal health. Children subjected to prenatal CSE have a higher risk of adulthood metabolic disease predicted by the Barker Hypothesis. The hepatic molecular phenotype associated with this risk is unknown. This dissertation characterizes the prenatal CSE-induced hepatic molecular phenotype during three key life stages. We used a murine model of prenatal CSE utilizing a Teague …

Middle School Outreach Efforts To Involve Immigrant Parents: What Are The Perceptions Of School Personnel And Immigrant Parents?, Marcella Denise Franklin-Williams

Electronic Theses and Dissertations

Throughout the years, a concern plaguing the education world is parent involvement. Ongoing research indicates students whose parents and family members are involved tend to experience greater academic achievement and decreased behavior issues (McNeal, 2015). With regard to parent involvement, immigrant parent involvement takes this concern to a new level with regard to the growing racial and ethnic diversity in education (Outley & Skuza, 2019). Guided by Epstein’s six types of involvement and Yosso’s community cultural wealth, this study explores one urban middle school’s outreach efforts to involve immigrant parents. In this qualitative case study, one middle schools’ stakeholders-the principal, …

Effects Of English Proficiency On Nursing Student Empowerment And Intent To Leave The Program, Nadja James

Dissertations

Individual (learner) empowerment plays an important role in the learning environment. A more empowered student is more likely to be academically successful and complete their program of study. The findings of this study showed nursing students who felt less empowered had a greater intent to leave their nursing program. Many prelicensure nursing programs struggle with high attrition rates, especially minority students, including students from a culturally and linguistically diverse (CALD) background. Since effective communication is crucial in the learning environment, students with lower English proficiency tend to struggle in that area. Communication issues affect CALD students’ sense of empowerment and …

Assessing Concussion Recovery With Dynamic Stability Methodologies, Kurt Otto Buchholz

Dissertations

The overarching purpose of this dissertation was to investigate methods and measures of dynamic stability with the final application being assessment within a concussed population. Of the three studies presented, the focus of the first two studies was on development of a new measure of dynamic postural stability, comparing it to traditional methods, and determining how it performed relative to traditional methods. In the first study, participants performed a forward hop while kinematic and kinetic data were collected. Comparison of the kinetic estimation of the center of mass to the kinematic estimation showed moderate to strong agreement. This allowed the …

Phenomenological Curiosity, Ryan Russell Katz

Dissertations

This transcendental phenomenological study focused on the phenomenon of curiosity. The aim of this research was to explore the following research question with seven research participants: What does curiosity mean? Supported by semi-structured, one-on-one, in-depth phenomenological interviews as the research method, the findings revealed (a) curiosity as an energy for learning and (b) six Curiosity Archetypes defined by the way each gathers, connects, and/or utilizes data to expand consciousness and sense of meaning via creativity. Grappling with curiosity as an energy for learning presents at least three significant educational implications: (a) if curiosity is an energy for learning, then learning …

Lived Experiences Of Counselors Providing Counseling To Adults With Autism Spectrum Disorder: A Qualitative Phenomenological Study, Jenna Annette Mack

Dissertations

The purpose of this study was to examine the lived experiences of counselors providing counseling to adults with autism spectrum disorder (ASD). Eleven professional counselors participated in the study from various regions of the United States. Four themes and 10 subthemes were found. The resulting themes discuss the counselor reactions, previous experiences with ASD, approaches used in counseling, and counselor self-care. The findings exhibit new evidence in the literature such as counselors’ emotional reactions to working with adults with ASD, challenges in balancing adult clients with ASD and their family members, and professional emotional boundaries used as a self-care tool. …

Model Selection For Longitudinal Data With Time-Dependent Covariates Using Generalized Method Of Moments, Maryann Nishimura Shane

Dissertations

The purpose of this dissertation was to establish measures that could be used to assess the relative fit of nested models with parameters estimated using the Generalized Method of Moments for longitudinal data with time-dependent covariates. A secondary data set collected from Filipino children was used as an example of model fitting to evaluate the quality of the assessment of fit of the Kullback-Leibler Information Criterion (KLIC) and a chi-squared statistic derived from the difference in the minimums of the quadratic forms of two candidate nested models. A simulation involving randomly-generated data sets was also used to evaluate the performance …

The Influence Of Asymmetry On The Metabolic Cost Of Locomotion, Shane Patrick Murphy

Dissertations

In this dissertation, the measurement and impact of asymmetrical locomotion were investigated. In the first study, ten able-bodied individuals were asked to run on a treadmill from which interlimb symmetries of joint level kinematics and kinetics were measured. To obtain a stable measure of interlimb symmetry, an average of 15 strides were needed. However, no differences were found between averages from bins of consecutive and inconsecutive strides. Further, no differences were noted between the average interlimb symmetry and interlimb symmetries calculated from the first, middle, or last, strides. Although there were differences between symmetry calculations, neither measure required a greater …

Social Structure Of The Spiny-Tailed Iguana, Ctenosaura Similis, Ann-Elizabeth Nash

Dissertations

Animal social structure, the social connections and patterns of interactions, its personality, and its genetic relatedness can affect a variety of ecological process within a species, including dispersal, predator evasion, disease transmission, and mate acquisition. While animal social structure has been examined in many mammals, birds, fish, and insects, they have not been widely examined in reptiles. There are few studies that have looked at the social structure of lizards, despite the widespread importance of these species. The Spiny-tailed Iguana (Ctenosaura similis) is a common species throughout it range, from southern Mexico through Panama. In Palo Verde National Park, C. …

Exploring School Employee Physical Activity Behaviors And Perceptions, Ann Pulling Kuhn

Dissertations

Employee involvement in physical activity (PA) while at school has been understudied and is relatively unknown (Chen & Gu, 2018; Hunt & Metzler, 2017). The purposes of this dissertation study were to (a) describe school employees’ PA behaviors while at school, and (b) explore school employees’ perceptions of the feasibility of school employee PA interventions found to be effective in published research. An explanatory sequential mixed methods design was used to collect school employee self-reported PA behaviors and district/school demographic information via an electronic survey from 488 school employees in northern Colorado. Data were analyzed using the Kruskal-Wallis H test, …

The Wounded Healer: A Phenomenological Study Of The Experiences Of Counselors-In-Training With Complex Trauma Histories, Jessica Leigh Manson

Dissertations

Thirty percent of the general population report one or more traumatic experiences (National Council for Community Behavioral Healthcare, 2019), and samples of mental health professionals report rates of traumatic experience as high as eighty percent (Pearlman & Mac Ian, 1995). Research on the neurobiological effects of trauma highlights the possibility of a trauma history uniquely impacting counselors-in-training (CITs) in their professional development and counseling work. This study focused on understanding the experiences of counselors-in-training (CITs) with complex trauma histories. Complex trauma is defined as a form of trauma that is chronic in nature and/or timing- specifically, an event perceived as …

Childhood Maltreatment And Working Memory: Considering The Influence Of Anxiety And Emotion Dysregulation, Mackenzie Ann Peake Pohja

Dissertations

This study investigated female college students with and without a history of childhood maltreatment and working memory ability on a traditional and an emotional working memory task. Individual difference variables of current anxiety and emotion dysregulation were also assessed. Some research reports a working memory deficit among individuals with a history of childhood maltreatment. However, some research has not found a relationship between maltreatment history and working memory. Both anxiety and emotion dysregulation are known to be associated with childhood maltreatment. Also, anxiety and emotion dysregulation are associated with poor working memory performance. Previous research has not considered the influence …

A Phenomenological Study Exploring The Experiences And Perceptions Of Counselor Education Students Who Have Completed An Intensive Social Justice Retreat, Aaron James Henderson

Dissertations

The intention of this phenomenology research study was to better understand the experiences and perceptions of counseling students who attend a weekend intensive social justice retreat. This examination may shed light on whether an intensive social justice experience is a valuable and worthy training modality to compliment the traditional classroom learning environment often found in counselor preparation programs. The data from two semi-structured interviews, a focus group, and research participant journals were utilized from 10 counseling students from CACREP accredited counseling programs in a mid-Western mountain state. Seven themes emerged from the data including: Increased Awareness, Desired for Prolonged Training, …

The Impacts Of Rock Climbing On The Selection Of Roosts By Bats And The Influence Of These Mammals On The Biodiversity And Nutrient Influx Of Cliff-Face Ecosystems, Ashley Kay Wilson

Dissertations

Humans have an un-matched ability to alter the environment, which often has detrimental effects on other species, from tiny microbes to enormous plants and animals. Bats are the second-largest order (Chiroptera) of mammals with ca. 1,300 described species, many of which have declining populations due to human disturbances of ecosystems. Being the only mammals capable of flight, bats exploit numerous ecosystems and are known to roost in various habitats including caves, trees, mines, bridges, barns, etc. Although the roosting ecology of bats in ecosystems such as caves and forests has been well documented, no study has yet examined the relationship …

Impact Of Metazooplankton Filter Feeding On Escherichia Coli Under Variable Environmental Conditions, Niveen S. Ismail, Brittney M. Blokker, Tyler R. Feeney, Ruby H. Kohn, Jingyi Liu, Vivian E. Nelson, Mariah C. Ollive, Sarah B. L. Price, Emma J. Underdaha

Engineering: Faculty Publications

The fecal indicator bacterial species Escherichia coli is an important measure of water quality and a leading cause of impaired surface waters. We investigated the impact of the filter-feeding metazooplankton Daphnia magna on the inactivation of E. coli. The E. coli clearance rates of these daphnids were calculated from a series of batch experiments conducted under variable environmental conditions. Batch system experiments of 24 to 48 h in duration were completed to test the impacts of bacterial concentration, organism density, temperature, and water type. The maximum clearance rate for adult D. magna organisms was 2 ml h1 organism1. Less than …

A Mixed Methods Investigation Of Positive Behavior Interventions And Supports In A Midwest Middle School, Thomas Dittrich Jr.

Dissertations

The researcher investigated the difference between the implementation of Positive Behavioral Interventions and Supports (PBIS) and student achievement scores and the number of failing grades in a Midwest United States suburban public middle school through a mixed methods research study. The collected and analyzed secondary data to complete quantitative research included numbers of office discipline referrals and failing grades, average daily attendance percentages, and percentages of students scoring proficient or advanced on the Missouri Assessment Program tests. Staff members, during the specified timeframe of the study, completed a Google Form survey and provided qualitative data. The z-test for difference in …

Millennial Generation College Students: Observations And Experiences Of Counseling Faculty At Selected California Community College Districts, Antoine Thomas

Electronic Theses, Projects, and Dissertations

Higher education, specifically the California community colleges, is being inundated with a large new generation of students called millennials. They are the majority student group enrolled in record numbers at California Community Colleges. California community colleges continue to evolve in order to accommodate millennial generation college students. A phenomenological design was utilized, using face-to-face interviews. This research explores the phenomenon of “millennial college students (millennials)” through the lived experiences of California community college counseling faculty who interact with them. Their observations and experiences could prove to be informative and help advance the purpose of this research.

The following are the …

The Practice Of Self-Care Strategies Among Master Of Social Work Students, Gracie Romero

Electronic Theses, Projects, and Dissertations

This study examined the different types of self-care strategies that Master of Social Work students practice. This study used the National Alliance on Mental Illness Self-Care Inventory, a survey which asks participants about commonly used methods of self-care. Engaging in self-care can bring better understanding and insights on how to prevent the signs of stress while also increasing an individual’s ability to regulate their emotional needs. All MSW students at the California university were invited to participate in the study. The surveys were administered via Qualtrics online survey software to the 68 part-time and o-time MSW students who agreed to …

Thinking Beyond The Führer: The Ideological And Structural Evolution Of National Socialism, 1919-1934, Athahn Steinback

Electronic Theses, Projects, and Dissertations

Much of the discussion of German National Socialism has historically focused on of Adolf Hitler as the architect of the Nazi state. While recognizing Hitler’s central role in the development of National Socialism, this thesis contends that he was not a lone actor. Much of the ideological and structural development National Socialism was driven by senior individuals within the party who were able to leverage their influence to institutionalize personal variants of National Socialism within broader party ideology. To explore the role of other ideologues in the development of Nazi ideology, this thesis examines how Hitler’s leadership style perpetuated factionalism, …

The Dark Side Of Family Supportive Supervisor Behaviors: Is Getting Help With Family Needs Detrimental To Women's Careers?, Gino Howard

Electronic Theses, Projects, and Dissertations

This study focuses on the negative impact that family supportive supervisor behaviors may have on career advancement for women in addition to the positive impact of family supportive supervisor behaviors in reducing work-family conflict. Data was collected using an online questionnaire through a university research management system including student participants and snowball sampling through email and social media platforms for a combined sample of 154 participants. Our results showed that increases in family supportive supervisor behaviors is associated with decreases in work-family conflict in agreement with findings in the literature. More specifically, the study showed that family supportive supervisor behaviors …

The Importance Of Earnings In Career Technical Education Field Of Study Choice, Karen S. Childers

Electronic Theses, Projects, and Dissertations

The purpose of this mixed methods research study was to examine factors influencing community college Career Technical Education (CTE) students in their field of study choice. The problem was twofold: (1) Community college CTE performance metrics include earnings goals, but there is little research to inform the performance metric (Harrington, Mbomeda, & Casillas, 2018; Roberts, Leufgen, & Booth, 2018); and (2) CTE students, who are disproportionately economically disadvantaged, pursue fields of study that do not lead to a living wage (Bahr, 2010; Booth & Bahr, 2012; Zhang & Oymak, 2018).

For this within-stage mixed model design (Johnson & Onwuegbuzie, 2004), …

A Survey Of Mathematical Models Of Human Performance Using Power And Energy, Vijay Sarthy Mysore Sreedhara, Gregory M. Mocko, Randolph E. Hutchison

Publications

The ability to predict the systematic decrease of power during physical exertion gives valuable insights into health, performance, and injury. This review surveys the research of power-based models of fatigue and recovery within the area of human performance. Upon a thorough review of available literature, it is observed that the two-parameter critical power model is most popular due to its simplicity. This two-parameter model is a hyperbolic relationship between power and time with critical power as the power-asymptote and the curvature constant denoted by W′. Critical power (CP) is a theoretical power output that can be sustained indefinitely by …

Gluten Detection Methods And Their Critical Role In Assuring Safe Diets For Celiac Patients, Claudia E. Osorio, Jaime H. Mejias, Sachin Rustgi

Publications

Celiac disease, wheat sensitivity, and allergy represent three different reactions, which may occur in genetically predisposed individuals on the ingestion of wheat and derived products with various manifestations. Improvements in the disease diagnostics and understanding of disease etiology unveiled that these disorders are widespread around the globe affecting about 7% of the population. The only known treatment so far is a life-long gluten-free diet, which is almost impossible to follow because of the contamination of allegedly “gluten-free” products. Accidental contamination of inherently gluten-free products could take place at any level from field to shelf because of the ubiquity of these …

Design And Development Of A Comprehensive And Interactive Diabetic Parameter Monitoring System - Betictrack, Nusrat Chowdhury

Electronic Theses and Dissertations

A novel, interactive Android app has been developed that monitors the health of type 2 diabetic patients in real-time, providing patients and their physicians with real-time feedback on all relevant parameters of diabetes. The app includes modules for recording carbohydrate intake and blood glucose; for reminding patients about the need to take medications on schedule; and for tracking physical activity, using movement data via Bluetooth from a pair of wearable insole devices. Two machine learning models were developed to detect seven physical activities: sitting, standing, walking, running, stair ascent, stair descent and use of elliptical trainers. The SVM and decision …

A Possible Luxr Solo Type Regulator Of An Antibiotic-Like Compound From The Soil Bacterium Rhodococcus, Katelyn Sellick

Electronic Theses and Dissertations

Rhodococcus, a species of bacteria commonly found in the soil, is an under-explored producer of small bioactive compounds including siderophores, pigments and antibiotics. MTM3W5.2 is a strain of Rhodococcus that was previously discovered to produce an antibiotic-like compound that has inhibitory effects on other Rhodococcus strains, including the veterinary pathogen, R. equi. The biosynthetic gene cluster responsible for production of the antibiotic has been identified, and a small gene, BTZ20_3964 at the start of the operon is believed to be a luxR solo regulator of the gene cluster. The goal of this project was to determine this gene’s …

Factors That Contribute To Pk-12 Teacher Retention In One Midwest School District, Jeffery Phillips

Electronic Theses and Dissertations

The purpose of this quantitative study was to determine relationship of the distinct factors to PK-12 teacher retention in one Midwest school district. This study was an examination of multiple factors, including work environment, fit, compensation and benefits, leadership, performance management system, peer support and mentoring, that contributed to the retention of PK-12 teachers with different levels of education, certifications, experience, career plans, and military affiliation. The questions on the Teacher Retention Survey used a Likert-type scale to measure teacher perceptions about retention factors to address 8 research questions.

For this study, I surveyed the population of 704 current PK-12 …

Differences In Socialization Factors In Relation To Prescription Drug Misuse Between Rural And Urban Juveniles, Gabriela Smith

Electronic Theses and Dissertations

Juvenile misuse of prescription drugs in the United States has continuously increased over the last few decades, especially within rural regions of the country. Despite continuous increase in rates of misuse, limited research exists on elements of socialization that may function to prevent drug use. The current study utilized the Monitoring the Future Survey data to explore prescription drug misuse between different populations of juveniles. While using Hirschi’s (1969) theory of social bonds as a theoretical framework, different elements of socialization were explored to determine whether they work to contribute or prevent prescription drug misuse among rural and urban juveniles. …

The Training Of A Para Powerlifter: A Case Study Of Adaptive Monitoring, Training And Overcoming, Derek Wilcox

Electronic Theses and Dissertations

Paralympic athletes (PA) appear to be more prone to chronic overuse injuries from daily wheelchair or crutch use. Over half of these injuries are shoulder related which can deleteriously impact quality of life. Adaptive powerlifters (AP) are a subdivision of Paralympic athletes and are at a higher risk for catastrophic injuries as compared to their counterparts, due to the compound of fatigue and lifting of maximal weights. For this reason, it is vital to have well-designed training plans for these athletes in order to preserve quality of life and maximize performance in competition. Unfortunately, there is a lack of literature …

Queer Students’ Perceptions Of Inclusion At Abc Community College: A Phenomenology, Francis Canedo

Electronic Theses and Dissertations

This qualitative study examined the lived experiences of Queer students at ABC Community College. Using phenomenology as its guiding framework, transcribed interviews were analyzed in order to seek the phenomenon of the experience. Examination of the literature suggested that Queer students’ experiences of discrimination could have a negative impact on academic achievement and that inclusive and affirming spaces have the opposite effect.

Further, Queer students search for affirming spaces from their faculty and peers, and the engagement these spaces provide may be good prognosticator academic achievement. When students are provided with inclusive spaces, they may be more likely to come …