Digital Commons Network^™

Development And Evaluation Of A Hand Exoskeleton For Neurorehabilitation Post Stroke, Ashley Joyce Mont

Dissertations

Stroke affects approximately 800,000 people in the United States each year, and due to its chronic effects, it is one of the leading causes of disability. Many individuals with stroke suffer the loss of motor function in their paretic upper extremity, and longitudinal studies show that 30 — 66% of individuals with hemiplegia fail to regain arm function six months post stroke. After a stroke, the brain undergoes neuroplasticity which will promote recovery of function. Investigators and clinicians are trying to develop rehabilitation interventions that can be designed to promote neuroplasticity, enhancing the recovery outcomes of therapy.

For individuals with …

Modeling Of Two-Dimensional And Biological Materials Towards Diverse Nano-Systems Applications, Jatin Kashyap

Dissertations

This dissertation studies the demonstration of materials ranging from two-dimensional (2D) materials to small bio-molecules using various atomistic/molecular and sub-atomic particles (electron, hole, excitons) modeling techniques for multi-domain applications. Three categories of materials/systems are investigated as follows: 2D materials, biological materials, and complexes of 2D and biological materials.

The first problem demonstrates wrinkles' ubiquitous presence in two-dimensional materials significantly alters their properties. It is observed that water molecules, sourced from ambient humidity or transfer method, can get diffused in between Graphene and the substrate during the Graphene growth. The water diffusion causes/assists wrinkle formation in Graphene, which influences its properties. …

Towards Ensuring Integrity And Authenticity Of Software Repositories, Sangat Vaidya

Dissertations

The software development process comprises a series of steps known as a software supply chain. These steps include managing the source code, testing, building and packaging it into a final product, and distributing the product to end users. Along this chain, software repositories are used for different purposes such as source code management (Git, SVN, mercurial), software distribution (PyPI, RubyGems, NPM) or for deploying software based on container images (Harbor, DockerHub, Artifact Hub). In the recent past, different types of repositories have increasingly been the target of attacks. As such, there is a need for mechanisms to ensure integrity and …

Decoding Human Movement Through Experiments And Simulation, Vishnu Deep Chandran

Dissertations

The ability to walk or move independently plays a decisive role in one's quality of life. This human ability requires complex coordination with several systems, such as the nervous, muscular, skeletal, and sensory organs, to execute movement tasks. Hence, any disorder of these systems from injury, disease, or aging severely affects the ability to walk or move independently. Disabilities that impair movement severely affect the quality of life. Therefore, studying the changes affecting human movement is necessary to improve the lives of individuals with impaired movement. Since human movement is complex and many systems interact in non-intuitive ways, the overarching …

Formation Of Oil Particle Aggregates And The Impact On The Fate Of Oil, Wen Ji

Dissertations

Spilled oil slicks are likely to break into droplets offshore due to wave energy. The fate and transport of such droplets are affected by suspended particles in local marine environment, through forming oil particle aggregates (OPAs). OPA formation is affected by various factors, including the properties of the particles and oil, the mixing energy and duration, etc. To investigate the impact of these factors, lab scale experiments are conducted by using seawater (both artificial and natural) and kaolinite and silica to simulate the formation of OPAs in baffled flasks. In the first experiment, 9 gm and 3 gm spherical silica …

Passive Interpretable Deep Learning From Cell Phone Activity For Optimal Patient Care, Pelin Ayranci

Dissertations

The majority of individuals in need of mental healthcare fail to seek it, and the diagnosis of those who do is driven predominantly by the patient's subjective self-assessment. There is a need for mental illnesses trackers that measure psychological and physiological symptoms and provide alerts and interpretable data for therapeutic interventions. We present a system that complements existing protocols to detect distress in mental health, passively monitor patients, and quickly alert authorized parties on possible mental health distress. We evaluate modeling a person's mental health from the sensors and activity logs of her/his cell phone using logistic regressions, LSTM, and …

Critical Mass Of Women On Biotech Corporate Boards And Its Implication For Firm Performance: A Mixed Method Explanatory Sequential Study, Shesh Sharma

Dissertations

This study examined the influence of demographic, functional, and cognitive diversities on firm performance of North American Biotech companies using a mixed method explanatory sequential approach. One-year cross-sectional data of 100 companies was analyzed followed by purposeful semistructured interviews with eight board members from the dataset. The combined results resolved several ambiguities present in the literature regarding board selection, composition, and the correlation of board diversity with firm performance. This study used the well-known market-based financial metric Tobin’s Q to measure firm performance.

The quantitative results showed a dichotomous relationship between gender ratio and Tobin’s Q based on a theoretically …

Parameter Selection In Fully Homomorphic Encryption Schemes And Fhe Applications, Cavidan Yakupoglu

Dissertations

Quantum computing has been gaining momentum as a result of recent technological advances. Existing cryptographic systems rely on the difficult problems that can be solved by sufficiently powerful quantum computers. As the quantum age approaches, the desire to discover new difficult problems that cannot be solved by quantum systems has increased. Lattice-based cryptography is a prominent tool for the post-quantum era that facilitates the implementation of encryption systems for practical applications.

The Learning with Error (LWE) and Ring-LWE problems introduce new lattice hardness assumptions that have been incorporated into public-key cryptosystems to facilitate the implementation of numerous privacy-enhancing applications. Fully …

Effect Of Fluid Penetration On The Damage Processes And Microseismicity Due To The Hydraulic Fracturing Of Rocks, Catarina Baptista-Pereira

Dissertations

The hydraulic fracturing is used when fluids are injected inside the matrices of rocks to allow the creation of new cracks while, the propagation of the existent cracks can also occur. This process has been widely used for the past decades in the deep earth energy sector which comprises four main subsectors: 1) recovery of geothermal resources, 2) CO₂ and hydrogen sequestration; 3) wastewater and nuclear waste disposal, and 4) recovery of (non)conventional fluids. By creating new flow paths or enhancing the existing ones, the pores are allowed to connect and, thus, it increases the permeability of rocks. For …

Per- And Polyfluoroalkyl Substances (Pfas) Distribution In Contaminated Soils And Impact On Rhizosphere And Plant Microbiota, Boran Wang

Dissertations

This dissertation is a comprehensive study of the mechanisms controlling per- and polyfluoroalkyl substances (PFAS) transformations and their transport in the environment, PFAS effects on plant growth and microbial community changes are critical in preventing or attenuating PFAS mobility and in predicting potential human exposure routes. The overarching goal of this project is to evaluate the distribution of PFAS in plants exposed to mixed contaminants, and their effects on the rhizosphere and in planta microbial community This main goal is achieved through the following research objectives: (1) Field investigation of PFAS contamination in New Jersey, (2) PFAS partition in soil …

Patient Perception Of Intensive Care Unit Discomfort, Essa Hakamy

Dissertations

Background: Discomfort has a significant effect on patient health and well-being; however, the symptoms are often difficult to address in ICU. Most patients in ICU are unable to communicate, making it difficult for physicians and nurses to distinguish between pain and discomfort. For example, artificial airways and assisted ventilation prevent patients from communicating. Patients may also have difficulty communicating due to delirium, fatigue, sedation, or neurological disease. Rationale: Discomfort has a considerable influence on patient health outcomes and well-being if not identified and addressed. Researchers have not explicitly explored discomfort apart from pain, which underscores the importance of studying the …

The Relationship Among Menopausal Knowledge, Stress, And Symptom Management In Southern Rural African American Women: A Developmental Perspective, Susan L. Prather

Dissertations

More than 12.9 million African American women are between the ages of 45 and 54, which is the perimenopausal period. Regardless of the millions of African American women transitioning to menopause yearly, very little information is available about their experiences, and even less is known about how they manage their symptoms.

The purpose of this study was to examine the relationship between menopausal knowledge, stress, and symptom management among rural southern African American women. Researchers have examined menopausal experiences over the last two decades; the majority of health information about menopause is based on studies of middle-toupper-class Caucasian women. Hence, …

Cultural Intelligence Practices Community College Presidents Use To Lead Their Organization, Jennifer Marta

Dissertations

Purpose: The purpose of this qualitative multicase study was to discover and describe the cultural intelligence practices California community college presidents use to lead their organization through the four dimensions of Ang et al. (2007) cultural intelligence (CQ) framework. Lastly, this study will examine the CQ practices of California community college presidents through the four dimensions of Ang et al.’s (2007) CQ framework.

Methodology: This qualitative multicase study was conducted through semistructured interviews of four California community college presidents to discover their use of CQ practices. Artifact collection and review was used to further describe how they use CQ practices …

A Structured Orientation Development System For Nursing Faculty, Dana R. Mangum

Dissertations

A national nursing shortage is nearing its crest. The Baby Boomer generation is begining to retire in record numbers. Healthcare technology is continually evolving and the topography of nursing education is changing. In order to aquire, develop, and retain excellent nursing faculty to meet the ever changing demands, nursing faculty need to be streamlined into the world of academia. A Structured Orientation Development System (SODS) was developed to aid nursing faculty into the transition from expert bedside nurse to expert nursing faculty. A literature review found no evidence of a structured type nursing faculty orientation system. The purpose of this …

An Examination Of The Effects Of Workgroup Characteristics On Criminal Case Processing & Case Outcomes, Luis Torres

Dissertations

The court communities and inhabited institutions perspectives posit that courts should be examined through a lens that considers the complex and collaborative process that court actors (e.g., judges, prosecutors, and defense counsels), collectively referred to as the courtroom workgroup, engage in during case processing. However, empirical research infrequently examines such intricacies and devotes little attention to how the characteristics of workgroup members influence courtroom interactions, the efficiency they process cases, and ultimately case decisions. This omission is notable because theory asserts that the dynamics of the workgroup are at least in part driven by the characteristics of its members.

This …

A Crisis Should Not Be Wasted: A Phenomenological Study On How Female Leaders From Military Academic Institutions Find Common Ground During Crisis, Diana Molodilo

Dissertations

Purpose: The purpose of this phenomenological study was to identify and describe the lived experience of female leaders from military academic institutions in finding common ground during crisis situations.

Methodology: This phenomenological study identified and described how female mid-level leaders from Defense Language Institute Foreign Language Center and Naval Postgraduate School found common ground during crisis. The population for this study includes all female leaders from military academic institutions in California, which is estimated at 60 to 100, of which 16 were sampled.

Findings: The findings from this research illustrate that female leaders found common ground when they (a) consistently …

A Phenomenological Exploration Of The Lived Experience Of Military Spouses Of Veterans With Combat-Related Post-Traumatic Stress Disorder, Teresa W. Yambo

Dissertations

A phenomenological study was conducted to explore the essence of the experience of military spouses living with veterans with combat-related Post-traumatic Stress Disorder (PTSD). Husserlian phenomenology was chosen as the theoretical framework because it allowed a deeper understanding of the unfolding o f the spouses' day-to-day experience. A purposive sample of 14 spouses living with veterans with symptoms of PTSD participated in unstructured interviews. Data were analyzed using a modification of Colaizzi's method. Four major themes were identified from data analysis: Recognizing Life is No Longer the Same, Living with Unpredictability, Bearing the Burden, and Creating a New Life. Spouses …

The Effects Of Prescribed Fire On Ant-Mediated Seed Dispersal In Missouri, Eva M. Colberg

Dissertations

Many aspects of animal-mediated seed dispersal are vulnerable to disturbance, including partner identity and dispersal quantity and quality. This dissertation explores ant-mediated seed dispersal of the herb Sanguinaria canadensis in Missouri Ozark oak forests, where prescribed fire is a common land management tool. In Chapter 1, I test the definition of a keystone seed disperser using absolute and relative contributions of different ant species to the quantity and distance of seed dispersal, based on field observations of S. canadensis seed dispersal. I demonstrate that the ant Aphaenogaster rudis is better described as a numerically dominant rather than keystone seed disperser, …

Agenda Setting On The Supreme Court Of The United States In 1960, 1977, And 1992, Jessica L. Curtis

Dissertations

This dissertation adds to Supreme Court of the United States agenda-setting research by exploring the following overarching research question: How does the Supreme Court of the United States decide which cases it will review? In addition, this study addresses three gaps in the agenda-setting research by considering types of petitions for writ of certiorari that are often ignored by other studies, analyzing the Court’s case-selection process as a two-step process, and studying the Court’s agenda-setting trends over time. To explore these gaps in the research, an original dataset was created by collecting data on a random sample of petitions for …

Stress, Bullying, Cortisol, And Depressive Symptoms In 9th Grade Adolescents, Susan G. Williams

Dissertations

Stress and bullying are known contributors to depressive symptoms in adolescents. Prevalence of depressive symptoms in adolescents is estimated to range from 13% to 34% in recent studies. Ninth graders are in a transitional period developmentally, biologically, physically, and psychosocially. Few studies have examined the relationship between stress, bullying, and depressive symptoms from a biobehavioral perspective in 9th graders. The purpose of this study was to examine stress, bullying, and depressive symptoms including a biomarker of stress, salivary cortisol diurnal rhythm, to determine if there is mediation between the individual variables of stressful life events, perceived stress, bullying, and depressive …

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 …

A Delphi Study Of The Skills Necessary For A Speech-Language Pathologist Or Occupational Therapist To Be Successful In A Leadership Position, Jessica Miller

Dissertations

Purpose: The purpose of this Delphi study was to identify the skills necessary for a speech-language pathologist or occupational therapist to be successful in a leadership position using an expert panel. In addition, the purpose was to rate the identified skills based on importance and lastly to determine the activities experts recommend to acquire the top-rated skills. Methodology: This study used a three-round Delphi method to collect data from expert leaders in speech-language pathology and occupational therapy. In Round 1, the expert panel was asked to identify the skills necessary to transition from a speech-language pathologist or occupational therapist to …

How Exemplary High School Principals Who Utilize Heart-Led Principles Achieve Extraordinary Results, Jeyan Danesh

Dissertations

Purpose: The purpose of this phenomenological study was to describe how exemplary high school principals in Riverside and San Bernardino counties lead from the heart using Mark Crowley’s four principles (building a highly engaged team, connecting on a personal level, maximizing employee potential, and valuing and honoring achievements) to accomplish extraordinary results in their organizations. Methodology: Semistructured interviews were conducted with 8 high school principals to better understand how the use of heart-led principles can lead to extraordinary results on a high school campus. Interview data were collected, transcribed, and coded for themes, allowing the researcher to triangulate data and …

How System Efficacy Affects Risk Perception: Comparison Of The United States, Iran, And China Throughout The Covid-19 Pandemic, Nazanin Bani Amerian

Dissertations

The current study fills a gap in the risk and health communication literature that deals with perception of risk. The extended parallel process model (EPPM) and associated Risk Behavior Diagnosis Scale lack consideration for attenuated perceptions of risk when people believe that some agent (e.g., government agencies or first responders) will protect them from a hazard. This project’s intention is to establish the validity of a new concept, system efficacy, as an addition to the EPPM model. System efficacy supplements current use of self and response efficacy. In addition, this study tries to investigate how culture affect risk perception by …

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 …

Brenno Blauth’S Compositional Style Elements: A Study On The Sonata For Flute And Piano, T.5., Thiago Bohm Bottega

Dissertations

The Sonata para Flauta e Piano, T.5, by Brenno Blauth (1931-1993), is a standard of the Brazilian flute repertoire. This document studies its folk and Brazilian popular music elements in order to better understand Blauth’s compositional rationale.

In 1959 Blauth was responsible for the creation of the group Movimento Musical Renovador. Based in Rio de Janeiro, MMR gathered renowned composers and performers with the goal of promoting Brazilian classical music. Chapter III is dedicated to the group’s initiatives, taking its political and cultural contextualization into account.

Chapter IV is dedicated to the study of Blauth’s compositional style shifts …

The Development And Testing Of An Instrument To Measure Decision Making In Emergency Department Triage Nurses, Kelly J. Cone

Dissertations

An emergency department may be the initial entry site for health care for the critically ill client; the triage nurse is the frontline provider to prioritize care. Decision-making skills are important in the accurate direction of client care. To date, no published research was available about triage nurses' decision-making skills in the triage setting. The conceptual frameworks for this study were diagnostic reasoning and Benner's theory of novice to expert.

For Colored Girls Who Considered Natural When The Perm Was Enuf: A Cultural Examination Of The Political Significance Of Natural Hair Youtube Influencers, Randrika C. Henderson

Dissertations

This dissertation explores the discourse between natural hair YouTube vloggers and audiences’ interactions with two popular YouTube channels, Jasmine Brown and The Chic Natural. This study uses hooks’ (2003) oppositional gaze as a theoretical framework that centers on media representation of Black women and the inability to produce images that mirrors Black women’s spectatorship (hooks, 2003). This study investigates how hegemonic and averisve racist ideologies (often represented in Western beauty standards) are encoded and decoded in Black women’s mediated spaces. This cultural and critical semiotic analysis explores two research questions: how hegemonic structures exist during the interactions between influencers and …

A Predictive Model Of Completion At Mississippi’S Community Colleges, Richard Baker

Dissertations

In the 2020 American presidential election and throughout the time since, the discussion of free community college continues to raise its head in the present political landscape in the United States. As the recognition of the contribution of community colleges to the overall educational level of the country grows, increased focus is going to be placed on how efficient and effective these two-year institutions are.

This research expands the body of knowledge by combining Resource Dependency Theory (RDT) and Astin’s Input-Environment-Output (IEO) model into an educational production function as defined by Bowles (1970). Neither RDT nor IEO is complete on …