Digital Commons Network^™

Managing Uncertainty In Sensor Data: An Evidence Theory Based Multisensor Data Fusion Approach, Gabriel Idowu Awogbami

Dissertations

Sensors play a critical role in the development of intelligent systems. Intelligent agents are equipped with an array of sensors to acquire information about themselves and the environment to make a reasonable decision. Information extracted from the sensor data is often characterized by uncertainty. Modeling and reasoning under such uncertainty poses a great challenge. Multisensor data fusion is a viable approach to address this problem. The Dempster Shafer (DS) theory of belief functions, also known as the evidence theory, is a well-known data fusion formalism due to its close relationship with other mathematical theories of uncertainty and its elegant way …

A Formal Systems Engineering Methodology For Cyber-Physical Systems: The Verifiable Design Process, Nadew S. Kibret

Dissertations

Cyber-physical systems (CPS) are systems that exhibit tight integration between their physical and computational components. They are hybrid systems containing continuous states and discrete states emanating from the physical and computational components, respectively. Systems engineering of these systems is challenging due to the tight integration of their computational, physical and communication technologies. As their level of acceptance increases in mission critical applications such as health care, smart grid, autonomous vehicles and smart cities, the need to ensure their safe operation is paramount importance as well. Therefore, design methodologies followed in their development are required to result in system behavior that …

Academic Libraries And Toxic Leadership, Alma C. Ortega

Dissertations

Toxic leadership has yet to be officially recognized as an area of inquiry in the field of library and information studies. Indeed, the literature on academic libraries is only now beginning to address the topic. None of this should be surprising because leadership, in general, continues to be an under-discussed topic in the library and information studies literature.

The topic of leadership, of course, is the central theoretical construct of the leadership studies field, and, in this field, toxic leadership has been systematically studied and discussed. This literature reveals the negative consequences of having a toxic leader as the head …

Psychiatric Patients’ Perception Of Involvement In The Plan Of Care, Jaspal Kaur Gill

Dissertations

Background: There is an increased need to actively engage and involve patients in their care planning in healthcare facilities including psychiatric facilities (Wills, Riefer, Schauer, & del Vecchio, 2011). There has been a growing interest in patient-centered care and patients’ involvement in their plan of care as it leads to positive healthcare outcomes and increased patient satisfaction. However, there is a lack of research on how psychiatric patients perceive their involvement in the care planning while they are admitted to an inpatient psychiatric facility.

Aim: The aim of this qualitative phenomenological research study was to explore patients’ perception …

Lived Experience After Surgery Among Hispanic Adults, Kimberly Sanchez

Dissertations

Background: In 2010, more than 51.4 million procedures were performed in hospitals in the United States. Almost half of all patients had a surgical procedure prior to their hospital discharge and over 80% of patients experienced acute pain after surgery. When acute pain persists for two or more months after surgery, chronic pain develops, costing the United States up to $635 billion annually. Hispanics, in particular, disproportionately experience disparities in pain treatment as they are less likely to receive analgesics. Routine pain assessments conducted using instruments may be inaccurately capturing the pain experience of Hispanic adults. No research has …

Game Types, Game-Related Behaviors And Resilience: Creating A Roadmap For Effective Gamification Design In Higher Education, Patrick Marino

Dissertations

Gamification, or the use of game-based mechanics and thinking in real world applications, is on the rise in educational environments. While various applications seek to increase engagement and motivation for tasks related to student success, research regarding best practices for the design of such systems is lacking. In fact, conflicting outcomes from various gamification studies at the secondary and tertiary education levels suggest that not all gamification designs are effective for increasing student success. Meanwhile, research from the medical field indicates gamification can be used to increase resilience; which has been linked to various student success outcomes including academic performance. …

The Nature Of David's Kingship At Hebron: An Exegetical And Theological Study Of 2 Samuel 2:1-5:5, Christian Vogel

Dissertations

The account of David’s reign at Hebron found in 2 Samuel 2:1—5:5 constitutes a somewhat neglected, yet crucial part of the David narrative, chronicling David’s first years as king. This dissertation investigates these chapters by means of a close reading of the Hebrew text in order to gain a better understanding of the nature of David’s kingship as it is presented in this literary unit. The review of scholarly literature on 2 Samuel 2:1—5:5 conducted in Chapter 1 reveals that not much attention has been given to a careful and in-depth exegesis of this literary unit. Instead, most of the …

Public School Teachers' Gender, Years Of Teaching Experience, Knowledge, And Perceptions As Predictors Of Their Implementation Of Brain-Based Learning Practices In K-12 Classrooms, Emmanuel Oduro-Bediako

Dissertations

Problem

With the introduction of a national curriculum, content standards, and federally mandated assessment; involuntarily teachers have adopted test-based teaching approaches in the classroom. Concurrently, researchers are celebrating brain-based learning because of breakthroughs in neuroscience and cognitive psychology and are promoting it as a watershed teaching opportunity. This has created a gap between research and practice, meaning that teachers’ ability to implement brain-based learning has been affected negatively.

Method

In a correlational design, a non-experimental quantitative study was conducted to examine a sample (N = 422) of teachers from K-12 schools within the United States public school system. The study …

The Theological Significance Of The Relations Of Freedom And Time In The Sciences And Humanities: An Evaluation Of The Contributions Of David Bohm And Pauli Pylkko, Michael F. Younker

Dissertations

The concepts of freedom and time underlay all other philosophical and theological questions. This dissertation addresses the natures and relations of freedom and time and their impact upon theological reflection, primarily through the works of the philosopher of science, David Bohm and the philosopher of the humanities, Pauli Pylkkö. These two representatives come from the two competing cultures of the sciences and humanities, which illustrate the deep philosophical conflict that has emerged between these cultures concerning the natures of freedom and time. Specifically, the paradigmatic contributions of Albert Einstein's four-dimensional 'timeless space-time' (with timeless freedom) alongside Bohm, on the one …

The Effects Of A Transition Program On The Academic Achievement Of Ninth Grade Students In A California Suburban High School, Igor Nicholas Milosavljević

Dissertations

Problem

High school graduation rates have improved over the last decade. However, approximately one-fourth of U.S. high school students still do not graduate within four years. The rates are higher especially among minority and low socioeconomic status students, including students with special needs and English Language Learners. More ninth graders fail than any other grade in high school. A disproportionate number of students held back in ninth grade subsequently drop out. Students who do not complete high school face significant social, financial, and health challenges. Programs have been developed to address this need. One of those is the Accelerated Academic …

Liberal Democratic Civic Education And Rampage School Gun Violence: Why We Need An Alternative Theory Of Democracy To Guide Contemporary Civic Education, Samantha Deane

Dissertations

In this dissertation, which relies on philosophical inquiry, I use the case of rampage school gun violence to explore democratic education. Drawing a distinction between liberal-foundational democratic education, which aims to educate the individual on how to become an autonomous rational agent and pragmatic-antifoundational democratic education, which looks to help individuals to understand agency as shared, I argue antifoundational democratic education teaches individuals how to affect their environment and take responsibility for the renewal of their democratic society. Rather than allocating blame in the singular individual, antifoundational democracy teaches citizens how to share the blame, take responsibility for unacceptable violence, …

Aerococcus Urinae: Establishing The Pathogenesis Of An Emerging Uropathogen, Evann E. Hilt

Dissertations

Urinary tract infection (UTI) is the world's most common bacterial infection. Much is known about the infectious process (pathogenesis) of a few of the bacteria that cause these infections, especially E. coli. Unfortunately, the pathogenesis of E. coli and other uropathogenic bacteria was explored almost exclusively in the belief that the bladder is supposed to be sterile. Our recent evidence, however, debunks this dogma. We used modern methods to reveal diverse bacterial communities in the bladders of adult women. These communities differ in women with and without lower urinary tract symptoms (LUTS), including UTI and urinary incontinence (UI). Many bacteria …

Retrieving And Reimagining Sanctuary And Solidarity: Racial Disparities In Infant Mortality, Alyson Capp

Dissertations

In Milwaukee, Black babies die before their first birthday nearly three times as often as White and Hispanic babies. Prematurity is the major cause of infant mortality, and social determinants of health play a large role. Commitments from within Christian bioethical traditions can critique ethical frameworks commonly in use in US bioethics by calling for the incorporation of analysis of social power dynamics that is necessary for addressing this issue. Original ethnographic fieldwork that listens closely to Black mothers and health professionals uncovers key themes related to women's and infant health at the intersection of race, class, and gender. By …

Regulation Of Acetyl Phosphate-Dependent Acetylation And Identification Of Novel Lysine Acetyltransferases In Escherichia Coli, David George Christensen

Dissertations

Over billions of years, organisms have organized chemical reactions into metabolic pathways to sustain life. However, metabolic substrates can undergo many uncatalyzed, extra-metabolic reactions. Acetyl phosphate (AcP), an intermediate of the acetate fermentation pathway in E. coli, is one such metabolite that has been shown to non-enzymatically acetylate hundreds of proteins. This diverse set of targets suggests that acetylation could be a way for the cell to sense its nutritional status and regulate protein activity accordingly. However, how E. coli regulates acetylation, if at all, is unknown.Previous work showed that acetylation becomes pronounced in stationary phase cells. I determined that …

Behavioral Symptom Clusters, Inflammation, And Quality Of Life In Chronic Low Back Pain Patients, Anitha Saravanan

Dissertations

Chronic low back pain (CLBP) is a prevalent condition, often involving an inflammatory process. Those with CLBP frequently experience behavioral symptoms, including depressed mood, fatigue, and sleep disturbance, which may exacerbate pain and reduce quality of life (QOL). The purpose of this study was to identify behavioral symptom clusters (depressive mood, fatigue, poor sleep) in individuals with CLBP, and to determine whether there are differences in pain, QOL and inflammation (plasma IL-6) based on cluster membership. CLBP patients (N=69; age = 56±13 years) completed measures of pain, depressive mood, fatigue, sleep, and QOL. Blood was obtained for IL-6 measurement. LCA …

Structure-Guided T Cell Receptor Mutations That Alter Antigen Specificity, Cross-Reactivity, And Polyfunctional Phenotypes In Gene-Modified T Cells, Kendra Foley

Dissertations

Adoptive cell transfer of T cell receptor (TCR) gene-modified T cells targeting specific tumor antigens is currently in clinical trials for patients with advanced malignancies. Despite the clinical responses, there are still hurdles to be overcome in achieving an effective and safe therapy. One of the limitations in the success of this type of therapy is the potential for cross-reactivity and unanticipated off-target reactivity which could lead to autoimmunity. Adverse events encompassing these "off-target, off-tumor" cross-reactivities leading to autoimmunity have been seen in patients in different clinical trials. Here, we demonstrate a novel approach to improve antigen specific reactivity and …

Nunet: A Deep Learning Approach For U.S. Traffic Sign Recognition, Emmanuel Borkor Nuakoh

Dissertations

Traffic Sign Recognition System (TSRS) is an Advanced Driver Assistance System (ADAS) that helps drivers with perception to ensure road safety. Two main activities are performed in TSRS: detection and classification. The detection aspect involves localizing traffic signs in an image frame while the classification aspect deals with recognizing the class of the detected sign. Research in this area has mainly focused on German, Belgium, Sweden, Chinese, and several other datasets using different approaches. However, limited research has been conducted using U.S. traffic signs; the ones that have been conducted are mostly concerned with speed limit signs recognition. This work …

A Correlational Study To Examine The Relationships Between The Workplace Big Five Personality Profile And The Leading Managers 360 Assessment Of Senior And Mid-Level Managers, Maurice A. Ferrell

Dissertations

Much has been said about personality and leadership. Leadership was initially attributed to leaders only having certain traits and attributes (Nock, 1940). In the early 20th century, leadership traits were studied to determine what made certain people great leaders. The Great Man Theory of Leadership, which was introduced during this time period, suggested that leaders were born and not made. It was these unique physical traits and attributes that were credited with making great leaders. Herbert Spencer, a noted philosopher, sociologist, biologist and political theorist of the Victorian era, countered that the Great Man Theory was childish, primitive and unscientific. …

Surface And Subsurface Damages In Rotary Ultrasonic Machining Of Ceramics: A Molecular Dynamics Method With Experimental Study, Yasser Hamouda Ahmed

Dissertations

Rotary ultrasonic machining (RUM) is one of the advanced machining processes for ceramics. Although many research papers about RUM have been published, there are very limited studies focusing on the effects of ultrasonic vibration on surface and subsurface damages. In this research, the surface and subsurface damages are compared for machining of dental ceramics (Al₂O₃) with and without ultrasonic vibration. The surface chippings are evaluated under microscope and the subsurface cracks are observed and quantified under scanning electron microscope (SEM). The contribution of this research is directed to use Molecular Dynamics (MD) method, which plays an …

Analyzing Disaster-Related Twitter Data And Identifying Panic Triggers For Cyber Disruption Prevention And Emergency Response Enhancement, Nasser A. Assery

Dissertations

Twitter has emerged rapidly as an ideal platform for news updates especially during natural disasters. During disasters, people exchange endless amount of information on Twitter. This information may include warnings, evacuation orders, updates etc. Making sense of this information is challenging due to the limitations of available tools to analyze high-volume data. There have been studies done to make use of twitter data as it contains valuable information that has the potential to help improve the efficiency of disaster response. This research presents a framework to extract, automatically label, and classify tweets from two recent disaster events in order to …

Sources And Atmospheric Oxidation Of Sulfur Dioxide And Formaldehyde Based On Wintertime Aircraft Observations Over The Eastern United States, Jaime R. Green

Dissertations

Plume intercepts from flights on the NSF-C-130 during the Wintertime Investigation of Transport, Emission and Reactivity (WINTER) campaign were used to estimate (1) the oxidation rates of Sulfur Dioxide (SO₂) under wintertime conditions and the factors that determine SO₂ removal; and (2) to examine the oxidation, lifetime and source apportionment of formaldehyde (HCHO). Observations suggest that OH governs the rate SO₂ oxidation in the eastern United States during winter. The range of mean oxidation rates during the day from power plants were 0.22–0.71%/hr, producing SO₂ lifetimes of 13–43 days, if SO₂ consumption is assumed …

Multi-Scale Interactions Between The Diurnal Cycle, The Mjo, And Convectively Coupled Equatorial Waves Over The Maritime Continent, Lakemariam Yohannes Worku

Dissertations

Given the Maritime Continent’s (MC’s) critical role in the global climate, examining variations in diurnal cycle and its interaction with the Madden–Julian Oscillation (MJO), Kelvin and Equatorial Rossby waves may lead to improved sub-seasonal forecasts. This study used satellite data of TRMM, TRMM Precipitation Features (PFs), and convective classifications from ISCCP. The convection becomes more organized through the afternoon and evening, leading to peak rainfall over the islands around 1800–2100 local standard time (LST). Over the next few hours, some of that rainfall transitions to stratiform rain over land. The convection then propagates offshore overnight with rainfall peaking along the …

An Exploration Of The Role Of Mentoring On The Leadership Skills Of African American Senior Leaders In A Corporate Setting, Regina A. Stephens

Dissertations

This study explored the lived mentoring experiences of African American senior leaders who report directly to Vice Presidents or Presidents in a corporate setting, and how those mentoring experiences played a role in their leadership skills. African Americans having the guidance to appropriately navigate an organization to acquire those positions continue to be perplexing. Mentoring could be one essential step to help African Americans to prepare to lead in a corporate setting. Mentoring is a growth and development technique that has been in existence for quite some time and has helped many to understand how developmental relationships have proven its …

Assessing The Temporal Dynamics Of The Lower Urinary Tract Microbiota And The Effects Of Lifestyle, Travis Kyle Price

Dissertations

Urinary tract infections (UTIs) are among the most common bacterial infections in humans, accounting for $3.5 billion in health care expenditures yearly in the United States alone. Yet, treatments for UTI have seen little innovation over the past decade. As demonstrated in other body sites, such as the vagina and gastrointestinal (GI) tract, acute and infectious diseases often have indirect microbial contributions which serve as intriguing new targets for therapies. The recent discovery of the existence of a resident community of bacteria (i.e., microbiota) in the bladders of both women and men, represents a novel avenue for targeting UTIs. However, …

Feminism And School Leadership: A Qualitative Study Utilizing Effective Women Principals' Self-Perceptions To Determine What Makes Them Successful, Christina Maria Sylvester

Dissertations

Women are underrepresented in a variety of fields, including educational leadership. Upon assuming leadership roles, women often struggle to effectively lead due to a pervasive context of sexism and genderism in the workplace. Schools are not immune to this phenomenon. Since women comprise approximately 50% of the population, it seems logical that they should assume a comparable percentage of leadership roles in education, but this is not the case. Beyond parity, it is important that there are not only more women leaders in educational administration but also that those women in leadership roles are supported within a context that enables …

An Automated Negotiation System For Ecommerce Store Owners To Enable Flexible Product Pricing, Jake O'Halloran

Dissertations

If a store owner wishes to sell a product online, they traditionally have two options for deciding on a price. They can sell the product at a fixesd price like the products sold on sites like Amazon, or they can put the product in an auction and let demand from customers drive the final sales price like the products sold on sites like eBay. Both options have their pros and cons. An alternative option for deciding on a final sales price for the product is to enable negotiation on the product. With this, there is a dynamic nature to the …

Investigation Into The Perceptually Informed Data For Environmental Sound Recognition, Chenglin Kang

Dissertations

Environmental sound is rich source of information that can be used to infer contexts. With the rise in ubiquitous computing, the desire of environmental sound recognition is rapidly growing. Primarily, the research aims to recognize the environmental sound using the perceptually informed data. The initial study is concentrated on understanding the current state-of-the-art techniques in environmental sound recognition. Then those researches are evaluated by a critical review of the literature. This study extracts three sets of features: Mel Frequency Cepstral Coefficients, Mel-spectrogram and sound texture statistics. Two kinds machine learning algorithms are cooperated with appropriate sound features. The models are …

Hierarchical Cluster Analysis: A New Type Of Ranking Criteria Based On Arwu Ranking Data, Zhengshuo Li

Dissertations

The advent of big data leads to many applications of Machine Learning techniques. University rankings is one of the applicable domains, which is currently playing a crucial role in the assessment of the universities' performance. Currently, the rankings are usually carried out by some authoritative ranking institutions by means of weighting techniques and the results are conveyed in numerical rankings. Three of the most famous university ranking institutions have been introduced from a technical perspective. However, these institutions have been proven to be subjective in relation to their data selection and weighting method.

Using Supervised Learning To Predict English Premier League Match Results From Starting Line-Up Player Data, Runzuo Yang

Dissertations

Soccer is one of the most popular sports around the world. Many people, whether they are a fan of a soccer team, a player of online soccer games or even the professional coach of a soccer team, will attempt to use some relevant data to predict the result of a match. Many of these kinds of prediction models are built based on data from the match itself, such as the overall number of shots, yellow or red cards, fouls committed, etc. of the home and away teams. However, this research attempted to predict soccer game results (win, draw or loss) …

Comparing Defeasible Argumentation And Non-Monotonic Fuzzy Reasoning Methods For A Computational Trust Problem With Wikipedia, Ryan Kirwan

Dissertations

Computational trust is an ever-more present issue with the surge in autonomous agent development. Represented as a defeasible phenomenon, problems associated with computational trust may be solved by the appropriate reasoning methods. This paper compares two types of such methods, Defeasible Argumentation and Non-Monotonic Fuzzy Logic to assess which is more effective at solving a computational trust problem centred around Wikipedia editors. Through the application of these methods with real-data and a set of knowledge-bases, it was found that the Fuzzy Logic approach was statistically significantly better than the Argumentation approach in its inferential capacity.