Digital Commons Network^™

Investigation Of Delta-Focused Ictal Electrical Source Imaging In Refractory Focal Epilepsy, Jared A. Rybarczyk

Theses and Dissertations--Electrical and Computer Engineering

Refractory focal epilepsy is characterized by the presence of seizures that cannot be controlled via anti-seizure medications. For patients suffering from this form of epilepsy, accurate identification of the seizure onset zone is a crucial step for many modalities of treatment. Electrical source imaging (ESI) allows for estimation of the seizure onset zone from electroencephalography. EEG feature extraction is an important step that can impact the final accuracy of source estimates. This work provides a review of 23 ictal ESI studies and proposes a delta-focused ictal ESI methodology. Our proposed delta-focused ictal ESI is implemented across 33 refractory focal epilepsy …

Electronics Design For Krepe Atmospheric Entry Capsule Avionics, Matt Ruffner

Theses and Dissertations--Electrical and Computer Engineering

This research documents the design, testing, and implementation of sensing, control, and communications subsystems for small atmospheric entry capsules. Atmospheric entry capsules pose a unique electronics design challenge given mission requirements, environmental constraints, and inherent risk involved in space based missions. Previous work on small satellites developed the CubeSat platform as a means of ensuring reliability after university-led small satellite missions experienced failures. The publication of the CubeSat platform allowed researchers to focus on the payload science utilizing a standardized form-factor and reusable electronics. Environmental and operational constraints of CubeSats and atmospheric entry capsules overlap and best-practices associated with building …

Cross-Layer Design Of Highly Scalable And Energy-Efficient Ai Accelerator Systems Using Photonic Integrated Circuits, Sairam Sri Vatsavai

Theses and Dissertations--Electrical and Computer Engineering

Artificial Intelligence (AI) has experienced remarkable success in recent years, solving complex computational problems across various domains, including computer vision, natural language processing, and pattern recognition. Much of this success can be attributed to the advancements in deep learning algorithms and models, particularly Artificial Neural Networks (ANNs). In recent times, deep ANNs have achieved unprecedented levels of accuracy, surpassing human capabilities in some cases. However, these deep ANN models come at a significant computational cost, with billions to trillions of parameters. Recent trends indicate that the number of parameters per ANN model will continue to grow exponentially in the foreseeable …

Nonuniform Sampling-Based Breast Cancer Classification, Santiago Posso

Theses and Dissertations--Electrical and Computer Engineering

The emergence of deep learning models and their success in visual object recognition have fueled the medical imaging community's interest in integrating these algorithms to improve medical diagnosis. However, natural images, which have been the main focus of deep learning models and mammograms, exhibit fundamental differences. First, breast tissue abnormalities are often smaller than salient objects in natural images. Second, breast images have significantly higher resolutions but are generally heavily downsampled to fit these images to deep learning models. Models that handle high-resolution mammograms require many exams and complex architectures. Additionally, spatially resizing mammograms leads to losing discriminative details essential …

Mitigation Of Reflected Overvoltage In Wind-Turbine Generator-Converter Systems With A Smart Coil Concept, Lulu Wei

Theses and Dissertations--Electrical and Computer Engineering

In the recent decade, ultra-fast wide bandgap switching devices such as Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) have been increasingly utilized in power electronic converters for renewable energy power generation systems due to their advantages of enabling high energy efficiency and high power density. However, the much higher voltage slew rate (i.e., dv/dt) with SiC power converters may induce voltage reflection and reliability concerns in machine-converter systems, especially for medium-voltage systems with long cable connections. In wind-turbine power generation systems, generators are typically located in the nacelles, and medium-voltage power converters are mostly placed at the bottom of the …

Multi-Physics Modeling Of Immersion Cooled Electric Power Apparatuses, Reza Ilka

Theses and Dissertations--Electrical and Computer Engineering

Electric power conversion apparatuses such as electromagnetic transformers and power electronic converters play a backbone role in the global power and energy industries, such as power transmission and distribution, electrified transportation vehicle systems, industry automation, and the like. To investigate the performance (efficiency, reliability, etc.) of such critical power conversion apparatuses, high-fidelity multi-physics modeling becomes critical which involves dedicated coupling among multiple physical domains, including electrical, magnetic, thermal, mechanical, and material engineering. Nevertheless, the majority of the existing models for these power conversion apparatuses focus only on one or two physical domains, and the modeling fidelity needs to be further …

A Novel Processor Architecture Implementing The Stacked Error Diffusion Algorithm And Its Zynq-Based Realization, Qishi Hu

Theses and Dissertations--Electrical and Computer Engineering

Digital halftoning reproduces continuous-tone images using patterns of black and white dots, while multitoning extends this concept by incorporating inks with intermediate intensities. These techniques are extensively utilized in the printing industry to accommodate the limited range of inks available in printers. Stacked error diffusion is a high-quality multitoning algorithm that adheres to the blue-noise dithering standard. This thesis research studies the potential parallelism inherent in the algorithm and introduces the design of a novel processor architecture optimized for efficient execution. The architecture is realized on an FPGA development board featuring a Zynq SoC. Additionally, the hardware prototype can also …

Information-Theoretic Learning Framework Based On Covariance Operators On Reproducing Kernel Hilbert Spaces, Jhoan Keider Hoyos Osorio

Theses and Dissertations--Electrical and Computer Engineering

Information theory provides tools to quantify uncertainty, dependence, and similarity between probability distributions, which are crucial for addressing various machine-learning problems. However, estimating these quantities is challenging because data distributions are usually unknown, and only observations are available for analysis. In this dissertation, we advance the field of information-theoretic learning by developing a comprehensive framework using kernel methods for analyzing probability distributions using reproducing kernel Hilbert spaces (RKHS). By leveraging covariance operators in this representation space, we propose approaches to estimate a set of fundamental information-theoretic quantities, that, because of their resemblance with conventional quantities in information theory, we call …

Optimal Control And Evaluation Of Shipboard Power Systems, Musharrat Sabah

Theses and Dissertations--Electrical and Computer Engineering

Electric warships are involved in complex missions consisting of multiple simultaneous operations. In order to ensure mission success, future ships must be designed in a way that optimizes their performance in the presence of complex mission loads. The focus of this research is an effort to optimally control the performance of shipboard systems during missions involving multiple scenarios or vignettes. The evaluation of the performance of mission-oriented power systems is based on the degree to which these systems deliver power to the loads required to perform the mission at hand. The performance of such systems involves a dynamic interplay between …

High Reliability Motor-Drive Systems For Electric Aircraft Propulsion, Majid Tahmasbi Fard

Theses and Dissertations--Electrical and Computer Engineering

The transition towards electric propulsion in aircraft applications requires significant advancements in enhancing the efficiency and power density of power transmission and distribution systems. Among the critical power components in electric aircraft propulsion systems, power electronic converters hold paramount importance as they provide a pivotal interface between batteries and propulsion motors while providing a high degree of controllability and flexibility to the system. Integrating medium voltage DC (MVDC) and the emerging wide bandgap switching devices into power converters not only amplifies converter performance but also unlocks multifarious system-level benefits, including reduced power losses, weight savings, and the utilization of high-speed …

Implementation Of An Evidence-Based Bundle To Educate Nurses In The Care Of Adult Post-Transplant Diabetes Mellitus Patients, Christine Slaughter

DNP Projects

Background: After solid organ transplantation, between 10-40% of patients develop post-transplant diabetes mellitus (PTDM) due to the immunosuppression regimen, infection, stress response and pain. Hyperglycemia events are common and managing glycemic targets is critical to decrease the likelihood of graft failure and mortality.

Purpose: To determine the impact of an evidenced-based bundle education strategy on the perceived confidence/knowledge of nurses and on their documentation compliance in the care of adult solid organ post-transplant diabetes mellitus patients.

Methods: A single group, pretest-posttest design was implemented to evaluate the effectiveness of the electronic educational program on the nurses perceived confidence/knowledge regarding glycemic …

The Effect Of An Intervention To Improve Screening For Opioid Use In Patients With Post Traumatic Stress Disorder, Tammy Swartz

DNP Projects

Background: Rates of post-traumatic stress disorder (PTSD) were reported to be higher during COVID-19 than during any other epidemic in history. Patients diagnosed with PTSD are at an increased risk of experiencing opioid use disorder (OUD). Early detection, prevention, and treatment are essential to prevent OUD.

Purpose: The purpose of this project was to determine if education aimed at increasing nurses’ knowledge increased patient screenings for OUD.

Methodology: A baseline chart audit was performed to determine the number of patients seen in the emergency department with PTSD who also were evaluated for OUD. Two hundred and forty emergency department registered …

The Impact Of An Educational Training To Front-Line Nurses And Providers To Reduce Seclusion And Restraint: Assessing Knowledge, Practices, And Attitudes, Kevin Bryant

DNP Projects

Background: The use of seclusion and restraint is common in hospitals, particularly in adult psychiatric settings. Although it is typically agreed that such measures should be used as a last resort in patient care, the majority of nurses feel that seclusion and restraint are necessary interventions in managing adverse behaviors of mental illness. There is a lack of data examining front-line nurses’ and providers’ knowledge, practices, and attitudes toward the use of seclusion and restraint following the use of a targeted educational training.

Purpose: This project aimed to evaluate the impact of a web-based educational intervention on the knowledge, …

Utilizing The Stop-Bang Questionnaire To Assess Risk Of Obstructive Sleep Apnea In Hospitalized Patients With Heart Failure To Facilitate Sleep Medicine Referrals Upon Discharge, Chelsea Mitchell

DNP Projects

Background: Obstructive sleep apnea (OSA) is the most common sleep-breathing disorder. Undiagnosed OSA is highly prevalent in the population, especially in those with heart failure. OSA and heart failure combined create a negative feedback loop that can lead to poor clinical outcomes. Unfortunately, many cardiac patients are never screened for OSA.

Purpose: The purpose of this project is to improve screening rates for OSA via the STOP-Bang questionnaire and establish an efficient and effective process for referrals to sleep medicine for heart failure patients screening high-risk.

Methods: The design was a quality improvement project with pre- and post-testing and a …

The Effect Of A Community Resiliency Model Education On Resilience, Psychological Empowerment, And Well-Being In Behavioral Health Nurses, Lorrie Smith-Esterle

DNP Projects

Background: Resilience, well-being, and psychological empowerment are associated with improvement in job satisfaction and nurse retention rates. The Community Resiliency Model (CRM) can promote emotional regulation, well-being, and create an internal state of balance in response to work-related stressors. Educating nurses on how to use CRM enables the recognition of changes in thoughts, emotions, sensations, and internal or external stimuli, which can promote resilience, well-being, and psychological empowerment.

Purpose: The purpose of this project was to evaluate evaluate the effect of a resiliency education using the Community Resiliency Model (CRM) on resilience, psychological empowerment, and well-being of behavioral health nurses. …

Improving Structural Empowerment Through The Co-Creation Of A Professional Governance Program Of Nurse Managers And Front-Line Nurses, Michelle Van Outer

DNP Projects

Abstract

Background: Professional governance is a model in healthcare systems where nurses are involved by participating in decisions that lead their practice. Participation in professional governance has been shown to improve nursing practice, employee satisfaction, nursing autonomy, and patient outcomes.

Purpose: The purpose of this study is to evaluate nurses’ perceptions of empowerment when front-line nurses are involved with their nurse managers in the design and structure of an inpatient state psychiatric hospital’s professional governance program.

Conceptual Framework: Kanter’s theory of empowerment will guide this project. As individuals feel more empowered, the success of the organization increases. Kanter suggests that …

The Impact A Nurse Recruiter Has On Nursing Staff Shortages And Nurse Manager Satisfaction In An Acute Psychiatric Facility, Johna Arnett

DNP Projects

Abstract

Background: Nursing staff shortages have persisted for the last few decades. Strategies to resolve this enduring challenge continue to drive the creative efforts to attract and retain new staff. These shortages not only affect patient care but can also impact the satisfaction of nurse managers. Little information is available on the effects of a nurse recruiter role on nursing staff shortages as well as nurse manager satisfaction.

Purpose: The purpose of this project is to assess how implementing a designated nurse recruiter impacts nursing staff shortages and nurse manager satisfaction in an acute psychiatric facility. This project examines two …

The Effect Of An Employee Recognition Program For Clinical Registered Nurse Retention At Eastern State Hospital, Kristi Richmond

DNP Projects

Abstract

Background: Nurse executives want to build and retain teams capable of delivering high quality care. However, registered nurse (RN) turnover continues to jeopardize this goal. RN satisfaction has been associated with reduced turnover in the nursing field. Adequate staffing levels are linked to better patient outcomes, and employee recognition is a key factor in RN retention.

Purpose: The purpose of this study was to evaluate the effectiveness of utilizing an existing recognition tool for RNs at an inpatient state psychiatric hospital in the southeastern United States to determine level of job satisfaction, level of job loyalty, level of engagement, …

Reducing Nursing Documentation Burden: Evaluation Of An Electronic Health Record Optimization Plan, Jessica Collins

DNP Projects

Background: UK HealthCare transitioned to a new enterprise electronic health record (EHR) system, offered by Epic Systems Corporation, in June 2021. Approximately 2,000 inpatient nurses use the EpicCare Inpatient Module in the 1,086 licensed bed facilities. Compared to other academic medical centers, UK HealthCare nurses take more time documenting in this EHR inpatient module’s Basic Assessment Flowsheet (documentation burden) and have a longer delay between assessment and documentation (timeliness) potentially contributing to nursing dissatisfaction with using this new EHR.

Purpose: The purpose of this project was to evaluate the effectiveness of a phase of the Epic Nurse Well-Being Project, a …

Improving Dental Students' Knowledge And Confidence In Treating Tobacco Use, Victoria Pierce

DNP Projects

Background: Tobacco use can lead to numerous chronic health conditions. Healthcare professionals in the dental field are in a unique position to broach this issue with patients. Research shows that dental students do not feel equipped to provide tobacco cessation care, citing lack of education on the subject among their top reasons for this.

Purpose: The purpose of this project was to evaluate changes in dental students’ knowledge and confidence related to treating tobacco use after participation in an educational intervention about the 5A’s, behavioral counseling, and first-line prescription medications.

Methods: This quality improvement initiative utilized a quasi-experimental survey design …

Improving Nutrition Screening Practice In The Hospitalized Heart Failure Patient Population, Amanda J. Bourgeois

DNP Projects

Background: Heart Failure is a disease known to affect nearly 6.5 million adults in the United States. Characterized by recurrent hospitalizations, heart failure significantly contributes to morbidity, mortality, and healthcare costs in the United States and worldwide. Because malnutrition is prevalent in the heart failure population, healthcare providers must perform nutritional assessments on admission to intervene in the case of malnutrition, prevent deterioration, and improve patient prognosis. Without intervention and early identification of malnutrition, heart failure hospitalizations will remain a significant problem.

Purpose: The purpose of this study is to evaluate the effect of an evidence-based educational program for cardiac …

An Educational Intervention On Provider Knowledge Of Hypertension Guidelines And Home Blood Pressure Monitoring, Alison Claire Oesterritter

DNP Projects

Background: While hypertension is the leading preventable risk factor for cardiovascular disease, disease control remains suboptimal. In the U.S., 47% of adults have hypertension, but only 25% are controlled. Despite having quality evidence-based guidelines, many recommendations are not implemented due to clinical inertia, or the tendency to not change therapy when targets aren’t met. Research has shown that this can be overcome with educational programs. Purpose: To provide training on hypertension guidelines and home blood pressure monitoring (HBPM) to overcome clinical inertia and improve patient outcomes related to hypertension. Methods: The project was a quasi-experimental, pre- and post- …

Improving Knowledge, Confidence, And Competency Among Icu Nurses Concerning The Benefits Of Using The Uk Ventilator Separation Protocol, Brittany Monroe

DNP Projects

Background: The trauma intensive care unit (ICU) at University of Kentucky (UK) Healthcare uses a ventilator separation protocol which provides specific guidelines on the successful weaning of patients from mechanical ventilation. However, many of the nurses are not aware of this protocol as formal education is not included in their orientation or training. This lack of knowledge can lead to risks such as increased patient morbidity, mortality, ICU length of stay, and healthcare-related costs. Research shows that using structured mechanical ventilator weaning tools in the ICU can shorten the duration of mechanical ventilation, which in turn, lowers these associated risks. …

The Impact Of Lung Cancer Screening Education On Knowledge And Screening Rates In A Kentucky Cancer Survivorship Clinic, Alexandra Isler

DNP Projects

Background: Lung cancer is a significant problem in Kentucky, which ranks fourth in the nation in adults who currently smoke. Early detection, through lung cancer screening, can prevent untimely deaths. Several barriers to screening exist including lack of knowledge and awareness among patients regarding lung cancer screening. By increasing knowledge, at risk patients can take the necessary steps to decrease incidence of late stage diagnoses.

Purpose: The purpose of this project was to evaluate patients’ knowledge of lung cancer screening and referral and screening rates before and after one-on-one patient education.

Methods: This was a quality improvement project that used …

The Effects Of An Educational Intervention On Nursing Knowledge Of Post-Operative Care Of Patients After Minimally Invasive Esophagectomy Surgery, Kelli Curry

DNP Projects

Abstract

Background: Minimally invasive esophagectomy surgery is commonly performed by thoracic surgeons on patients with esophageal cancer. The post-operative care of these patients is meticulous and follows a protocol developed by the thoracic surgeons at the University of Kentucky. At UK Chandler Medical Center, concerns have been raised regarding nurses’ lack of education of the protocol, and therefore decreased implementation. Increasing nursing knowledge pertaining to this protocol by performing educational in-services periodically and standardizing and implementing formal education as part of nursing orientation will decrease the knowledge gap and improve patient outcomes and increase utilization of the post-operative protocol.

Purpose: …

New Crew Nights: The Impact Of A Nurse Leader Led Mentorship Series On Perceived Competency In The Novice Nurse, Taylor C. Bergman

DNP Projects

Abstract

Background and Purpose: Nursing leaders across the United States are seeking to recruit and retain new graduate nurses as a national nursing shortage widens at an alarming pace. Healthcare systems are tasked to strengthen the skill set of novice nurses as they seek to meet the care needs of acutely ill patients and rebuild a skilled workforce for future years. This study evaluated the impact of a four-part mentorship series for novice nurses on perceived strengths in competency, communication, wellbeing, and teamwork.

Methods: In this quality improvement project with pre-intervention/post-intervention assessment, a sample (n=14) of medical surgical nurses with …

Implementation Of An Education Intervention Aimed At Intensive Care Unit Providers To Improve Knowledge Of And Screening For Cognitive Impairment Related To Post-Intensive Care Syndrome, Terry Harrod

DNP Projects

Abstract

Background: Post intensive care syndrome is a condition that can lead to a range of physical,

cognitive, and psychiatric issues and is frequently undiagnosed. Educating Nurse Practitioners,

Physician Assistants, and Physician Fellows who work in the ICU about post intensive care

syndrome and a cognitive screening tool like the MoCA can significantly enhance their

understanding and ability to diagnose a component of this syndrome.

Purpose: The purpose of this project was to evaluate the effect of an educational intervention

regarding post intensive care syndrome among ICU nurse practitioners, physician assistants, and

physician fellows treating patients within the ICU.

Methodology: …

The Effect Of An Educational Intervention On Early Mobility Compliance In Oncology Nurses, Jonathan A. Hacker

DNP Projects

Background: Geriatric adult patients admitted into acute care hospital settings are at risk of functional decline in their capacity for activities of daily living and independent ambulation. Many of these patients fail to achieve pre-hospitalization levels of function and continue to decline, requiring additional support and care after discharge. Current literature supports early mobilization and ambulation during hospitalization. However, ambulation and patient mobilization has been shown to be the most missed item of nursing care. There is a gap in literature and patient outcome data regarding the impact of early mobilization on medical-surgical patient populations.

Purpose: The purpose of this …

Provider And Staff Education Surrounding Universal Hcv Screening And Linkage To Care In An Ambulatory Care Setting, Lauren Clifford

DNP Projects

Abstract

Background: In the United States, it is estimated that there are more than 2 million cases of Hepatitis C (HCV), with over 66,000 new cases since 2020 However, an estimated 75% of those with HCV go undiagnosed and less than 35% receive treatment within a year of diagnosis. In 2018, UK Healthcare (UKHC) implemented a universal HCV screening method using a Best Practice Advisory (BPA) for anyone 18 and older who presented to the Emergency Department and had labs ordered. Patients who screened positive were then referred to outpatient clinics for HCV treatment. Approximately ten percent of positive patients …

Evaluation Of Nutritional Guidance From Providers For Patients With Type 2 Diabetes In A Primary Care Setting, Whitney Rice

DNP Projects

Background: Adherence to diet is a challenging part of managing type 2 diabetes mellitus (T2DM). Guidelines recommend including a registered dietician and/or a diabetes educator. While this is the gold standard, there are barriers to implementation in primary care. The Starting the Conversation (STC) diet recall tool can aid primary care providers (PCPs) in providing brief nutrition counseling for patients with T2DM. Purpose: To evaluate the perceptions and practices of PCPs regarding dietary education and documentation for patients with T2DM after provider education and initiation of the STC tool. Methods: This was a quality improvement project using a quasi-experimental pretest …