Digital Commons Network^™

Virtual Reality Simulation's Influence On Nursing Students' Anxiety And Communication Skills With Anxious Patients, Tanae A. Traister

Dissertations

The incidence of medical-surgical patients with a secondary anxiety diagnosis is increasing, and nurses' feelings of inadequacy in communicating with anxious patients have hindered the therapeutic nurse-patient relationship, negatively impacting patient outcomes. Simulation methods such as high fidelity simulation and standardized patients have decreased nursing students' anxiety levels in caring for anxious patients. However, they face maintenance costs, availability, and consistency barriers. Full immersion virtual reality simulation has demonstrated
success in nonhealthcare and medical education but is limited in nursing education. Nursing students from an associate and bachelor's degree nursing program participated in a full immersion virtual reality simulation anxious …

Measuring Psychological Safety, High-Reliability (Hro) Perception And Safety Reporting Intentions Among Pediatric Nurses, Lauren Pfeifer

Dissertations

The purpose of this study was to explore the relationships between psychological safety, perception of working in a high reliability organization (HRO) and safety event reporting intentions among pediatric nurses working in acute care.

The quality and safety of patient care is dependent upon nurses to report safety events and near-misses in order to address systems' issues and identify improvement opportunities. To encourage feedback and promote reporting, many health care organizations have adopted the high reliability framework and strategies to promote team psychological safety. A dearth of literature exists on how the pediatric nurse perceives their workplace. This study addressed …

Effects Of Excessive Student Technology Usage On Student Cognitive Engagement, Kristina Leah Loveland

Dissertations

Technology in the classroom has educators asking the question of whether technology engages students on a deep cognitive level or whether technology is holding students back. Educational technology has the potential to increase student engagement (Norris & Coutas, 2014). Wexler (2019) found technology is holding students back because they prefer the virtual setting to a real-world setting. The purpose of this mixed-methods research study was to determine if there is a connection between student cognitive engagement and excessive technology use. Developed by Antonetti and Stice (2018), the four components of Powerful Task Design were identified as the conceptual framework that …

A Genomic Investigation Of Divergence Between Tuna Species, Pavel V. Dimens

Dissertations

Effective management and conservation of marine pelagic fishes is heavily dependent on a robust understanding of their population structure, their evolutionary history, and the delineation of appropriate management units. The Yellowfin tuna (Thunnus albacares) and the Blackfin tuna (Thunnus atlanticus) are two exploited epipelagic marine species with overlapping ranges in the tropical and sub-tropical Atlantic Ocean. This work analyzed genome-wide genetic variation of both species in the Atlantic basin to investigate the occurrence of population subdivision and adaptive variation. A de novo assembly of the Blackfin tuna genome was generated using Illumina paired-end sequencing data and …

Impact Of An Active Learning Intervention On Student Success In An Introductory-Level Biology Course, Cynthia Littlejohn

Dissertations

Large enrollment introductory-level courses with high rates of students receiving a D, F, or withdrawing have been identified within higher education as gateway courses. Students not successfully completing these courses are disproportionately represented by historically and continually marginalized populations, such as low-income, poorly represented ethnic groups, and first-generation students. A form of blended learning called the flipped class model is becoming increasingly prevalent in gateway courses. A flipped class design may reduce the cognitive load by allowing time for processing information before class while cooperative learning may result in a collective working memory effect where social interactions may serve to …

Data Collection And Machine Learning Methods For Automated Pedestrian Facility Detection And Mensuration, Joseph Bailey Luttrell Iv

Dissertations

Large-scale collection of pedestrian facility (crosswalks, sidewalks, etc.) presence data is vital to the success of efforts to improve pedestrian facility management, safety analysis, and road network planning. However, this kind of data is typically not available on a large scale due to the high labor and time costs that are the result of relying on manual data collection methods. Therefore, methods for automating this process using techniques such as machine learning are currently being explored by researchers. In our work, we mainly focus on machine learning methods for the detection of crosswalks and sidewalks from both aerial and street-view …

Peridynamic Modeling Of Crack Propagation In Brittle Materials With Electromechanical Coupling, Semsi Coskun

Dissertations

The bond-based peridynamics (BB-PD) is a widely used peridynamic model in the literature. Despite Poisson's ratio restriction, it still serves as a powerful tool to solve challenging engineering problems with a relatively cheap computational cost. Consider the Poisson ratio of the material does not deviate from the ones that BB-PD can model. In that case, it becomes advantageous to use the BB-PD compared to other PD models in terms of computational cost and simplicity. However, the BB-PD suffers from the so-called surface or skin effect where the material response at boundaries becomes softer than the bulk material points. As a …

A Mixed Methods Investigation Of Third Grade Academic Achievement Data: Pre- And Post-Google Chromebook Usage In A Midwest Elementary School, Brittany Powell

Dissertations

Technology in the educational setting has evolved drastically over the last few decades and continues to currently evolve. As technology advances, best practices for teaching and learning, standardized testing, and curriculum also must evolve. The purpose of this study aimed to fill the gap of the lack of research regarding the possible differences in academic achievement data, pre- and post-Google Chromebooks usage. The researcher investigated educators’ and administrators’ perceptions of technology by conducting inperson interviews at the conclusion of the two-year study. The analysis of qualitative data, gathered from all interviews and researcher journal entries, fell into various thematic categories, …

Project-Based Learning In Introductory Psychology: Modern Adaptations To An Academic Classic, Colton R. Olson

Dissertations

This study used a quasi-experimental design to examine the effectiveness of a project-based learning (PjBL) course design on meaningful learning, student goal orientation, engagement, and perceived classroom motivational climate in an introductory psychology course. Project-based learning was examined in comparison to a traditional, lecture and multiple-choice exam course design in introductory psychology over the course of one semester (N = 247). Generally, there is limited research examining PjBL in large introductory classes, specifically in relation to concrete outcomes such as meaningful learning and perceived classroom climate (Gurung et al., 2016). Therefore, the purpose of the study was to add to …

The Fractionation Of Woody Biomass With Bifunctional Aryl Sulfonic Acids At Mild Conditions, Duo He

Dissertations

Fractionation of lignocellulose is a fundamental step in the valorization of cellulose, hemicelluloses, and lignin to produce various sustainable fuels, materials, and chemicals. Over the years, most fractionation processes are cellulose centered or lignin-first. However, regardless of the fractionation strategy, the previous reported fractionation processes either need high temperature and high pressure or intensive size reduction of lignocellulose prior to the process. Therefore, there is a need to develop low energy and rapid delignification with simplistic recovery of chemicals for advanced utilization of renewable and biodegradable lignocelluloses for the future biobased economy.

To address this need, an innovative and scalable …

Relative Effects Of Self-Paced And Machine-Paced Learning Under Computer-Based Training, Eunju Choi

Dissertations

The purpose of this study was to compare the effects of a self-paced instruction versus machine-paced instruction using a computerized format. Instructional applications such as Programmed Instruction and Computer-Based Instruction have long touted the benefits of self-pacing (e.g., teaching machines, Personalized System of Instruction), but direct comparisons of different pacing types are lacking. Some preliminary research suggests that self-pacing may be prone to distraction by competing reinforcers and overall poor self-management of time. As such, it may be possible that machine-paced lessons (based on optimal timings) may foster better learning while retaining other beneficial features of CBI (interactivity, flexibility of …

The Relationship Between The Quantum Consciousness And Depression, Yarone Grabiner

Dissertations

Depression is a prominent issue in mental health. This research will attempt to improve the quality of available therapies by offering additional helping options and introducing a new perception of depression. Different fields (psychology, quantum mechanics, and Kabbalah) have been integrated with data collection through personal interviews to support the research hypothesis. The subject sample consisted of five people with Kollel experience or similar educational experience in the present or in the past. All participants were orthodox Jewish men, 30 years old or older, married with children, with a high level of education. Participants presented attitudes, life conduct, and perceptions …

Principals’ Definition And Identification Of Critical Thinking In Teacher Practices, Carmen Aumber Polka

Dissertations

Principals are teacher evaluators and, therefore, need a clear definition and identification of critical thinking in teacher practices to increase their impact on teacher effectiveness and student critical thinking outcomes. Beyond teacher evaluations, principals are responsible for supporting and developing teachers in their instructional practices (Davis et al., 2005) and for enhancing teachers’ pedagogical skills (Marzano et al., 2011). This instrumental case study explored how 12 principals, who use the Colorado State Model Evaluation System (CSMES) to evaluate critical thinking teacher practices, define critical thinking, and identify critical thinking utilized in teacher practices. Participants were purposefully selected from this Colorado …

Post 9/11 Military Spouse Caregivers: A Descriptive Phenomenological Study, Erin Mcevoy

Dissertations

Since the terrorist attacks of September 11th, 2001, the United States Armed Forces has been involved in military conflicts across the globe. Innovations in battlefield medicine have resulted in the highest battlefield survival rates that America has ever seen. Injured veterans are returning to their homes by the thousands, in need of daily caregiving that encompasses many domains of life. Many times, the spouses of these individuals answer the call and become primary caregivers for their injured servicemember partners. Taking on the identity of military spouse caregiver puts these individuals at increased risk of many physical and mental health concerns …

Mild-Condition Fractionation Of Woody Biomass And Tandem Preservation Of Lignin And Carbohydrates, Danni Xie

Dissertations

Various fractionation processes like kraft, sulfite, and organosolv, usually need to be carried out in expensive reactors due to high temperatures (e.g., 160-260 °C) and high pressures (e.g., 5-50 atm). During fractionation, conventional chemicals such as mineral acids (e.g., sulfonic acid and hydrochloric acid), aliphatic organic acids (e.g., formic acid and oxalic acid) and alkalis (e.g., sodium hydroxide and potassium hydroxide) are typically used as catalysts, which could cause structural alterations or even losses to the fractionated components. Recently, aromatic sulfonic acids are expected to in situ solubilize the fractionated lignin through the pronounced hydrotropic effect during fractionation, besides acting …

Development Of Smart Wearable Sensory Systems On Flexible And Fabric Platforms For Health Monitoring Applications, Simin Masihi

Dissertations

Wearable sensing technology has recently received an increased attention in both research and commercialization phases and has moved from a vision of science fiction to reality with a wide variety of applications. This incredible growth can be attributed to several factors, such as affordability and ergonomics provided by advances in flexible electronics. The other factors that realized wearable sensing technology include a critical need for more accessible health care services experienced during the recent COVID pandemic, integration to the Internet of Things (IoT), and a growing consumer desire for health awareness. This dissertation presents the fulfillment of three main projects …

Time-Dependent Photoionization Modeling Of Warm Absorbers In Active Galactic Nuclei, Dev Raj Sadaula

Dissertations

Warm absorber spectra are bound-bound and bound-free absorption features, seen in the X-ray and UV spectra from many active galactic nuclei (AGN). The widths and centroid energies of these features indicate they occur in outflowing gas moving with hundreds to thousands of km/s. Depending upon the energy and momentum of the outflow, it can affect the gas within the host galaxy. Thus, warm absorbers’ mass and energy budgets are of great interest. Estimates for these properties depend on models that connect the absorption features' observed strengths with the density, composition, and ionization state of the absorbing gas. Such models assume …

Graduate Students' Self-Determination As Writers, Need For Cognition, And Sense Of Belonging As Predictors Of Confidence In Program Completion, Mary Ebejer

Dissertations

This study explored graduate student self-determination as a writer, need for cognition, and sense of belonging as predictors of their confidence today in their program completion. The data set consisted of 2,390 graduate students at universities across the United States. The data analysis was conducted using hierarchical linear modeling (HLM), with students nested in programs, nested in universities.

The analysis found that both self-determination as a writer and sense of belonging contributed to student confidence in program completion. Need for cognition did not. Seven statistically significant student-level demographic and program-related variables remained in the final model, including: PhD student, returning …

Esports Curricula In U.S. Post-Secondary Institutions: A Case Study, Debra L. Bell

Dissertations

Although the concept of Esports competency has been widely recognized, it is not yet well understood by the various educational institutions that have started offering certification programs in this field. This study aims to provide a comprehensive analysis of the multiple principles that have been established to promote this specialization.

The increasing popularity of gaming and esports has led to the development of a wide range of educational programs that are geared toward addressing the needs of the future workforce. Although the goal of these programs is to provide a comprehensive view of the various facets of this field, the …

The Influence Of Chemistry Instructors’ Knowledge And Beliefs About Learning On The Implementation Of Evidence-Based Instructional Practices, Brittney J. Morgan

Dissertations

In this dissertation I explore characteristics which influence the implementation of evidence-based instructional practices of six post-secondary chemistry instructors in Colorado who report current use of these practices. The purpose of this study was to identify these characteristics to recognize areas of focus for future professional development. Knowledge and beliefs were also explored, as characteristics are often a culmination of these individual beliefs. Using a qualitative case study approach, a survey, classroom observations, and semi-structured interviews were used to collect the data for this exploration. Instructors were observed using the Classroom Observation Protocol for Undergraduate Science, Technology, Engineering and Math …

Evidence-Based Equity In Chemical Education, Anna Margiotta

Dissertations

Using Constructivist Grounded Theory (CGT) and reflexive Thematic Analysis (TA) methods, the purpose of this case study was to construct theory about equity for students studying chemistry at public universities in Colorado. Interviews with students (N=12), chemistry instructors (N=9), and equity practitioners (N=9) as well as observations of chemistry classes (N=42) were collected. Along with these interview transcripts and in-class observations, surveys completed by participants were also included as data. Journal entries of a reflexive or memoing nature were written as part of the data analysis procedures. With these data, I explored potential methods of equitable change in chemistry instruction …

Additive Metal Deposition Feedback Optimization For The 3d Hybrid Metal Printer, Andrew James Wyman

Dissertations

In the additive manufacturing realm, explicitly the direct energy deposition method, there continues to be numerous advancements along with advantages to control print quality of the component and the ability to apply the successful repetition of metallic layers consecutively. Metal additive printed components have the capacity to directly use the component for the desired application or intended purpose from which the three-dimensional model was created. In contrast, plastic printers that produce components that would not hold to the physical conditions required such as a metallic component could withstand.

Research exertions were focused on improving the present Western Michigan University patented …

Coastal Geomorphic Response To Sea-Level Rise, Storms, And Antecedent Geology: Examples From The Northern Gulf Of Mexico, Clayton Dike

Dissertations

Sea-level rise and tropical cyclone activity are threatening coastlines around the world. Past geologic coastal responses can be used to inform future scenarios. This three-part study examines the response of coastal systems to sea-level rise, storms, sediment supply, and antecedent geology over the past ~ 140 ka.

The first study is of the Bay St. Louis, Mississippi, coastal system along the northern Gulf of Mexico incorporating sediment supply, subsidence, and antecedent topography paired with an examination of geologic response to sea-level fall and rise. I used core and geophysical data that resolve incised valleys and other subsurface deposits from ~ …

Application Of Deep Learning For Medical Sciences And Epidemiology Data Analysis And Diagnostic Modeling, Somenath Chakraborty

Dissertations

Machine Learning and Artificial Intelligence have made significant progress concurrent with new advancements in hardware and software technologies. Deep learning methods heavily utilize parallel computing and Graphical Processing Units(GPU). It is already used in many applications ranging from image classification, object detection, segmentation, cyber security problems and others. Deep Learning is emerging as a viable choice in dealing with today’s real-time medical problems. We need new methods and technologies in the field of Medical Science and Epidemiology for detecting and diagnosing emerging threats from new viruses such as COVID-19. The use of Artificial Intelligence in these domains is becoming more …

Using Nudges To Increase Engagement With Suicide Prevention Resources In An Online Sample Of United State Military Veterans, Brian W. Bauer

Dissertations

Suicide rates have continually increased from 1999 to 2019 in the United States, with populations such as military Veterans showing substantially higher suicide death and attempt rates than civilians. Behavioral economics researchers have demonstrated that people regularly make decisions that are not aligned with their own self-interests (i.e., irrational decisions). These irrational decisions often stem from humans having bounded rationality (i.e., limited computational power), which produce reliable cognitive biases that occur outside of people’s awareness and influence the decisions they make. There are many important decisions leading up to a suicide attempt (e.g., whether to engage with suicide prevention resources), …

Designing Dynamic And Degradable Polymeric Materials With Thiol-X Chemistries, Reese Sloan

Dissertations

With plastic production poised to increase in coming years, there arises a need to develop new polymeric materials designed to combat the global pollution crisis. A commonly utilized approach in addressing this challenge is to employ a responsive functional moiety into the polymer architecture. Thiol-X reactions, a commonly utilized class of “click” reactions, have garnered broad implementation in new stimuli-responsive materials. This work specifically focuses on utilizing radical-mediated thiol-ene coupling and base-catalyzed thiol-isocyanate reactions to develop a library of ternary thiol-ene/thiourethane covalent adaptable networks (CANs) and hydrolytically labile poly(thioether ketal) thermoplastics. CANs are a class of network materials capable of …

A Managerial Ecosystem For Excellence In Hospital Administration, Denish Gangasingh

Dissertations

Major healthcare systems and hospital organizations face a myriad of challenges in today’s business environment, having to provide very complex and more comprehensive medical care with fewer resources. In this study, we investigate determinants of hospital performance in critical dimensions and propose an information infrastructure intended to promote excellence in clinical performance while sustaining a solid financial footing.

Senior executives must be knowledgeable in both business and clinical aspects of hospital administration because their decisions ultimately affect patient care and clinical outcomes. Key performance indicators (KPI) are necessary on both dimensions to inform their decisions. Financial and operational aspects of …

Influences Of 12-Hour Shifts On Unhealthy Eating Habits Of Acute Care Nurses, Ruth Sawdy

Dissertations

Shift work is a necessary part of a nurses' work schedule to patients who need 24 hours of continuous care. Eating habits of nurses are influenced by working long hours, not having adequate time to take a meal break, and not having access to healthy food choices which can cause stress and exhaustion and results in weight gain and obesity. The purpose of this quantitative logistic regression analysis, guided by the health belief model and the theory of planned behavior, was to determine if there was a relationship between shift work and the unhealthy eating habits/obesity rates of acute care …

Factors Influencing The Adoption Of Smart-Home Appliances: Users' Perspectives, Prakash Shahi

Dissertations

Smart appliances will be a significant part of the annual $300 billion smart-home market by 2025. Their use is expected to grow at a compounded annual growth rate of 31% for the foreseeable future. Currently, 12-16% of households use smart-home products in the U.S., including thermostats, TVs, refrigerators, coffee machines, garage door openers, and vision-equipped doorbells. Smart appliances provide significant benefits to us over traditional appliances. Smart appliances simplify our lives by automating various tasks in our homes and allowing us to monitor and control them remotely from our offices, grocery stores, and wherever we may be.

Despite the usefulness …

Evaluating Sbirt In A Behavioral Health Urgent Care, Christina L. Williams

Dissertations

Background: Adolescent substance use (SU) is a major health concern. Most youth who engage in alcohol and other SU do not meet criteria for SU disorder (SUD). Nonetheless, evidence shows SU during adolescence impacts cognitive, social, and emotional development, increases risk of physical injury, and may progress to SUD in adulthood. Only half of clinicians properly screen adolescents for SU; those identified with SUD often receive no intervention. Screening, Brief Intervention, and Referral to Treatment (SBIRT) is an evidence-based intervention to address this problem. The purpose of this project was to evaluate implementation of SBIRT using CRAFFT 2.1+N, a SU …