Digital Commons Network^™

Opioid Use And Abuse In The United States, James Pellerin

Master's Theses and Doctoral Dissertations

Opioids have quadrupled the number of unintentional drug overdose deaths since 1999 and are now among the leading causes of death in the United States. Though some reform has recently occurred, the United States continues to operate largely under a punitive criminal justice model despite unsuccessful legislative schemes and voluminous research stemming from a previous war on drugs. This thesis serves to explore the history and extent of opioids in the United States and to analyze salient catalysts responsible for creating an epidemic of abuse. While private and governmental coalitions have formed to develop successful interventions and treatments, they are …

The Relationship Between Motivational Interventions And Task-Oriented And Ego-Oriented Learners, Carolyn S. Dale

Master's Theses and Doctoral Dissertations

Background: The current high stakes standardized testing mandate, wherein school funding and other resources depend on successful student test performance, makes student motivation especially important. This study seeks to examine factors affecting K-5 teachers’ ability to recognize different types of student motivation behaviors and identify corresponding interventions. The study focuses on an aspect of motivation known as goal orientation, which has been found to manifest in two basic types: ego orientation and task orientation.

Purpose: The study assesses the relationship between elementary teachers’ goal orientations and their teaching environment, and their ability to recognize ego- and task-oriented behaviors and interventions. …

Quality Improvement Of Recycled Concrete Aggregate Using Polymers, Ahmed Ali Abdrabbou

Master's Theses and Doctoral Dissertations

Crushed concrete is one of the main resources for sustainable material. As this material should not be wasted, this research aims to assess the reuse of crushed concrete material as a resource of sustainable construction material. In this thesis, two types of polymer were mixed with crushed concrete to improve its fragmentation resistance, water absorption, and permeability. Water base polymer is an eco-friendly and cost-effective material, which has been used frequently to improve the quality of crushed concrete. This thesis contributes to the improvement of crushed concrete performance by improving the aggregate properties when it is mixed with a polymer, …

Neural Correlates Of Nonverbal Social Communication In High-Risk Infants, Casey E. Swick

Master's Theses and Doctoral Dissertations

The aim of this study was to replicate and extend a study by Grossmann and colleagues (2008), examining infant neural responses to gaze in 5-month-olds, to older and high-risk infants. Participants were 9-month-old infants (5 preterm, [3 female]; 12 full term [7 female]) who underwent fNIRS while viewing gaze paradigms. Findings revealed that hemisphere predicted peak oxygenated hemoglobin (HbO₂) across groups and conditions, with higher activation in the left hemisphere across groups. Interaction of group by condition predicted peak HbO₂ value, with an increase in activation in the high-risk group during the averted condition. Participants as random …

Molecular Dynamics Simulation Of Gas Transport And Adsorption In Ultra-Tight Formations, Yannick Tambe Agbor

Theses and Dissertations

Kerogen, which plays a very important part in reservoir characterization for ultra-tight formations, is also involved in the storage and production of hydrocarbons in shale. In this work, we study the kerogen structure and its interaction with insitu hydrocarbons to fully understand the fluid flow and adsorption mechanisms in the shale. Also the advancement in pore network modelling has greatly helped the understanding of mesoscale fluid flow. In this work, transport of methane in a type II marine environment kerogen model is studied using molecular dynamics simulations. Non Equilibrium Molecular Dynamics Simulations (NEMDS) using GROMACS code and Grand Canonical Monte …

Comparing Source Rock Maturity With Pore Size Distribution And Fluid Saturation In The Bakken-Three Forks Petroleum System, Williston Basin, North Dakota, Adedoyin Suleman Adeyilola

Theses and Dissertations

With the continuous demand for fossil fuel and advancement in technology, the unconventional petroleum resources have come into limelight. The Devonian Three Forks Formation consisting of carbonate and clastic sediments is an unconventional oil accumulation

containing about 3.73 billion barrels of technically recoverable oil. However, understanding rock properties of the various lithofacies and fluid saturation is still challenging.

The petroleum prospectivity was evaluated by integrating organic maturity and hydrocarbon generation with porosity distribution and fluid saturation in the Ambrose field and adjacent fields. The organic maturity was done with a programmed pyrolysis analysis (Source

Rock Analyzer) using samples taken at …

The Effects Of Cultural Participation On Health Outcomes Among American Indian/Alaska Native Elders, Collette Adamsen

Theses and Dissertations

American Indian/Alaska Native (AI/AN) history represents a number of traumatic events inflicted upon each tribal generation that has yet to recover. These events have led to major consequences on the health of this population. AI/AN people experience the worst health disparities in the nation (Espey et al., 2014; Warne & Lajimodiere, 2015). Previous studies have shown that loss of land, cultural devastation, and inadequate health care access are associated with the high rates of health disparities endured by AI/AN people throughout North America (Walters, et al., 2011). AI/AN beliefs tell us that culture serves a fundamental role in managing good …

Quantifying Extravehicular Activity Performance Degradation Due To Sustenance Deprivation, Eryn Beisner

Theses and Dissertations

Modern EVAs (spacewalks) performed onboard the International Space Station require astronauts to endure up to twelve hours of intense mental and physical exertion without food, as they do not stop to eat nor do they currently have the capabilities to consume sustenance in their spacesuits. With the future of space exploration taking aim at the Moon, Mars, and beyond, EVAs are expected to become more demanding than ever. This is a pilot study to attempt to quantify astronaut performance during an EVA to determine if there is significant performance degradation because of acute starvation. Astronauts conducting EVA training at NASA’s …

Differentiating Active And Passive Fatigue States With The Use Of Electroencephalography, Kyle Anthony Bernhardt

Theses and Dissertations

With advances in automation technology, it is becoming essential to understand how automation affects human operators. A concern for the implementation of automation technology is the interactive effects it has with operator cognitive fatigue. Desmond and Hancock (2001) proposed that two types of fatigue can arise depending on the nature of the task: active and passive. Active fatigue results when operators must make constant perceptual-motor adjustments during high task demands, while passive fatigue results from operators executing little or no perceptual-motor adjustments during low task demands, similar to when automation is employed. The purpose of this study was to use …

Health Aspects Of Community-Engaged Natural Play Space Planning, Design, And Implementation, Eric Castle

Theses and Dissertations

Obesity, loss of social capital, and fewer connections to nature are three community health issues faced by many. A team of concerned individuals attempted to address the spectrum of these health issues by collaboratively engaging communities to plan, design, build and program natural play spaces located in public parks. This exploratory study, utilizing a grounded theory approach, conducted focus groups with community members who engaged in this process. The specific objectives of the study were twofold; 1) to generate theory regarding the perceived impact on social capital from the community-driven planning and construction process of the Connecting Children in Nature …

Characteristics Of Individuals Who Participate In Autoerotic Asphyxiation Practices: An Exploratory Study, Lauren Chapple

Theses and Dissertations

The set of behaviors known as Autoerotic Asphyxiation (AeA) have been studied, by contemporary scientific standards, for the better part of sixty years. Within that time, an inadequate amount of research has been completed on a far too narrow sample of the population, namely those who have died from the practice. AeA as a practice has been understudied to this point despite statistics that would note the potential for an unknown number of individuals to currently be practicing these behaviors. There is a paucity of both quantitative and qualitative data about living AeA practitioners. The present study uses Sex Positivity …

Interfacing The Cfd Code Mfix With The Petsc Linear Solver Library To Achieve Reduced Computation Times, Lauren Clarke

Theses and Dissertations

A computational bottleneck during the solution to multiphase formulations of the incompressible Navier-Stokes equations is often during the implicit solution of the pressure-correction equation that results from operator-splitting methods. Since density is a coefficient in the pressure-correction equation, large variations or discontinuities among the phase densities greatly increase the condition number of the pressure-correction matrix and impede the convergence of iterative methods employed in its solution. To alleviate this shortcoming, the open-source multiphase code MFiX is interfaced with the linear solver library PETSc. Through an appropriate mapping of matrix and vector data structures between the two software, the access to …

Examining Teacher Perceptions On Change In Secondary School Libraries To Promote Informational Literacy, Sarah Crary

Theses and Dissertations

Libraries in schools are changing from a place to check out books to providing access to information from a multitude of media. The specific changes needed in school libraries and the method to accomplish those changes, specifically from the perspective of teachers, is an area of research with few empirical studies. The purpose of the study was to use Fullan’s Change Theory (2007) initiation phase to identify how ready teachers are to engage in changing the way information literacy skills are taught. The researcher investigated teachers’ perception with openness to change. The researcher analyzed teachers’ perceptions about collaborative roles between …

Dieter's Deficit: Preoccupation And Working Memory, Kelly Cuccolo

Theses and Dissertations

Preoccupying thoughts can cause disruptions of ones’ attentional system and may arise as the result of a clinical disorder, societal pressures, or individual predispositions. Goal acquisition requires one to be preoccupied with one’s behaviors in order for success to be achieved, for example dieters must monitor their weight and caloric intake. As dieting is a widespread phenomenon in American culture it is important to understand the cognitive effect of preoccupation. This study examines the relationship between obsessional thoughts about food, weight, and shape, and cognitive task performance. The performance of Dieters and Non-Dieters on a battery of specific working memory …

A Comparative Analysis Of Manned And Unmanned Aviators's Approach To Safety, Aaron Marlo Dahl

Theses and Dissertations

This study is an analysis of differences between unmanned and manned aviation

industry safety. A survey tool was used to collect safety perception, risk perception, and

organizational safety culture data from various individuals throughout the aviation

industry. In general, no difference existed between the unmanned and manned groups,

indicating an overall safe operating environment for aviators. While the results of this

limited study show no overall difference between groups, it provides a baseline study for

which future data, collected from a more mature industry, can be obtained.

The War After Battle: Morale, Post-Traumatic Stress And Long-Term Welfare Of Combat Soldiers, Corey Doan

Theses and Dissertations

There is a historical, literary, and philosophical record of the effects of combat on mental health. Modern psychological research has focused on the relationship between combat deployment and a litany of mental health issues which include post-traumatic stress disorder (PTSD), various forms and manifestations of depression, substance abuse with a specific focus on alcohol, as well as social, family, and work-life functional impairment. This study introduces a customized 18-item Integrated Military Morale Questionnaire (IMMQ) which was designed to measure the proposed basic components of military morale: personal morale, cohesion, and esprit de corps. Data from 185 United States military members …

Wild And Domestic: Short Stories, Sara E. Dupree

Theses and Dissertations

Wild and Domestic is a collection of short stories set in rural northwestern Minnesota that center around themes of parenting, family, and the desire for stability and security. This desire for domestic harmony often comes into conflict with the characters’ strong desire for personal freedom, self-expression, sexual gratification, and a deeper connection to the natural world—desires that are linked to the concept of wild. The collection also invites readers to reflect on its animal characters. In many of the stories, animal characters, both wild and domestic, play a role in setting up the crisis or climax of the story by …

"Representative Bureaucracy" In Police Hiring Practices: A Case Study Of A Diverse Police Agency, Sara Franceen Edel

Theses and Dissertations

Diverse police agencies that are reflective of communities they serve are vital to community-oriented and problem-oriented policing, and in repairing fractured relationships by establishing trust and a partnership with communities. Agencies that engage in community-oriented and problem-oriented policing also attract more female officers and officers of color. The purpose of this study is to describe how one police agency in the Midwest recruits, hires, and retains a representative agency, and to describe what factors are important in this process. It is a descriptive, single case study that uses triangulation of multiple methods, including quantitative and qualitative methods, and multiple data …

Alcohol-Related Regret Among Undergraduate Students, Samantha Jo Feroni

Theses and Dissertations

College alcohol use remains a major public health concern, particularly on campuses in the Midwest. Heavy drinking has been linked to a number of deleterious consequences, ranging from poor academic performance and early school exit to injury or death. Many of the negative consequences linked to alcohol use carry with the possibility of regret. The purpose of this study is to explore the types of alcohol-related regret, any gender and class level differences in regret, and whether students become hesitant to drink alcohol after such a regret occurs. Data used for the study came from semi structured interviews with undergraduates …

Scanning Tunneling Microscopy/Spectroscopy Measurements And Density Functional Theory Calculations On Iridium-Modified Silicon Surfaces And Self-Assembled Monolayer Of Organic Molecules On Graphite, Fnu Fatima

Theses and Dissertations

Research was carried out on two different topics, metal induced modifications in various cuts of silicon (Si) surfaces and molecular thin films. But both projects reveal the underlying theme of self-assembly. It is needed to discover functional means to create components for integrated circuits as well as electronic and photonic devices since nature can rely upon self-assembly at the nano-scale.

Scanning Tunneling Microscopy and Spectroscopy (STM/STS) studies were performed to characterize the morphology of thin octanoic acid film on graphite and the outcome of 1-deecanethiol adsorption on the electronic properties of iridium (Ir) modified Si (110) surface. It was established …

The Long-Term Significance Of Working As An Undergraduate Teaching Assistant, Christopher J. Felege

Theses and Dissertations

The use of undergraduate teaching assistants (UTAs) has increased in recent years at a number of institutions, especially in active-learning and high-enrollment introductory courses. Currently, there is research demonstrating their benefit to students, and the short-term impacts of the experience on the UTAs. However, no study to date has investigated the long-term impacts of the UTA experience on the participants themselves, and a number of studies call for such an investigation. This dissertation sought to fill that gap in understanding by utilizing a Grounded Theory approach to investigate the perceptions of participants who had served as an UTA in the …

3-D Stress Redistribution During Hydraulic Fracturing Stimulation And Its Interaction With Natural Fractures In Shale Reservoirs, Jun Ge

Theses and Dissertations

The hydraulic fracturing (also called fracturing, or fracking) technique has been widely applied in many fields, such as the enhanced geothermal systems (EGS), the improvement of injection rates for geologic sequestration of CO2, and for the stimulations of oil and gas reservoirs, especially for unconventional reservoirs with extremely low permeability. The key point for the success of hydraulic fracturing operations in unconventional resources is to connect and reactivate natural fractures and create the effective fracture network for fluid flow from pores into the production wells. To understand hydraulic fracturing technology, we must to understand some other affecting factors, e.g. in-situ …

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 …

Removal Of Emerging Poly- And Per-Fluoroalkyl Substances By Water Treatment, Ryan Alexander Hanson

Theses and Dissertations

Per- and poly-fluoroalkyl substances (per- and poly-PFASs) are emerging contaminants that have raised great concern in recent years. Two anionic per-PFASs in particular, perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA), has received worldwide attention for their persistence in the natural environment, resistance to typical environmental degradation, bioaccumulation potential, and adverse health effects in humans. The stable chemical characteristics have enabled these chemicals to be used in many industrial and consumer products over the past 50 years. They have been detected all over the world in various environmental matrices.

The water treatment removal of per-PFASs has been well documented, but the full …

Staphylococcal Enterotoxins G And I Elicit Long-Term Anti-Tumor Responses In Humanized Hla-Dq8Αβ Transgenic Mice, Peter Knopick

Theses and Dissertations

Immunotherapies have evolved into a collection of tools used clinically in the treatment of several pathologies. Staphylococcal enterotoxin G and I are potent T cell activators that drive multifaceted immune responses and have been implicated in antitumor responses. The addition of SEG and SEI as useful immunotherapies could be underappreciated as mice do not respond as humans would to superantigen stimulation. HLA-DQ8 mice with established B16-F10 tumors receiving 50μg each SEG and SEI 6 and 9 days post tumor implant resulted in 80% progression free survival >300 days. In comparison, allogeneic C57BL/6 mice did not benefit from SEG/SEI therapy. Remarkably, …

An Investigation Of Severe Weather Environments In Atmospheric Reanalyses, Austin Taylor King

Theses and Dissertations

This thesis performs an intercomparison of reanalysis datasets with the goal of determining their respective proficiency in representing severe weather environments capable of producing phenomena such as strong wind, large hail, and tornadoes. A select reanalyses is then used to investigate the climatology and trends in pertinent severe weather parameters over a three-decade period from 1986-2015.

The intercomparison is performed by comparing a peer-reviewed dataset of Rapid Update Cycle 2 (RUC-2) proximity soundings to collocated soundings derived from the nearest grid point in six different modern reanalyses. These soundings are compared via various parameters related to severe weather such as: …

The Case Of The Missing Girl: Exploring Sex-Selective Abortion Through Ethnodrama, Hamzat Amoussa Koriko

Theses and Dissertations

The study uses Ethnodrama to address sex-selective abortion in Armenia. Ethnodrama uses an ethnographic method of data collection, then presents the findings as a dramatic script or performance. The urgency and the sensitivity of the topic informed the choice of using Ethnodrama over conventional research methodologies. The study gathered data from three primary sources: government databases, international organizations working with non-governmental organizations, and ethnographic fieldwork. The fieldwork consisted of taking notes on daily observations during classroom activities, a personal journal on conversations and interaction with community members, stories from community members, informal questions and answers sessions, and a small ethnographic …

Yoga As An Intervention Among College Students: Measuring Changes In Body Dissatisfaction, Disordered Eating, Self-Compassion, Mindfulness, And Experiential Avoidance, Rachel A. Kramer

Theses and Dissertations

The purpose of this dissertation was to elaborate and expand research examining the incorporation of yoga in the prevention and treatment of eating disorders in addition to the amelioration of body image and related factors through a two-study design. Study One recruited participants from a Midwestern psychology subject pool. One-hundred fifty women completed Study One. Results indicated that self-compassion, mindfulness, and body appreciation were negatively related to eating disorder pathology, body mass index (BMI), and experiential avoidance. BMI, eating disorder pathology, and experiential avoidance were all positively correlated with one another. Mediational analyses indicated the self-compassion was a significant mediator …

Amyloid Precursor Protein And Insulin Homeostasis, Joshua Kulas

Theses and Dissertations

Alzheimer’s disease (AD) is a neurodegenerative disease in which the brain progressively deteriorates resulting in cognitive decline, language impairment, diminished spatial awareness, memory loss and ultimately, death. AD is the most prevalent neurodegenerative disease and the number of people afflicted by AD is expected to more than double in the next 30 years. AD is characterized in part by the formation of amyloid plaque deposits in the brain. It is known that these plaques are composed of the peptide Aβ, which aggregates as a function of age and is produced locally within the brain by cleavage of the Amyloid precursor …

A Comparison Of Direct And Indirect Assessments Of Standing Lumbar Lordosis In Asymptomatic Adults, Nolan Adam Larson

Theses and Dissertations

Background: While lumbar lordosis is often indirectly (visually) assessed by practitioners to guide treatment, it is not clear how well direct and indirect assessments agree. The aims of this study were to (a) determine the intra- and inter-rater reliability of two indirect assessments (visual assessments of real and 3D body scanned people), and (b) determine the agreement between direct and indirect assessments (3D scan-extracted vs. visual assessments).

Methods: Fifty asymptomatic participants were physically landmarked and scanned with and without landmarks using the Vitus Smart 3D whole body scanner, after which 10 practitioners visually assessed the lumbar lordosis of each participant. …