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Distributed And Optimal State Estimation For Heterogeneous Dynamic Systems Operating Within A Strongly Connected Network, Matthew Howard Dec 2021

Distributed And Optimal State Estimation For Heterogeneous Dynamic Systems Operating Within A Strongly Connected Network, Matthew Howard

Electronic Theses and Dissertations, 2020-2023

This dissertation is aimed at developing optimal and distributed state estimation algorithms for a team of cooperating nodes with the goal of improving accuracy through local sharing of relevant information. The nodes are assumed to be individually equipped with heterogeneous sensors for measuring a common target which can be dynamic and time-varying. Additionally, the nodes are assumed to be connected through a dynamically changing communication network modeled as a sequence of strongly connected digraphs allowing for local communication and distributed interactions. Using the data sharing afforded by the communication network, a weighted average state estimate consensus can be found across …

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Quantifiability: Concurrent Correctness From First Principles, Victor Cook Dec 2021

Quantifiability: Concurrent Correctness From First Principles, Victor Cook

Electronic Theses and Dissertations, 2020-2023

Architectural imperatives due to the slowing of Moore's Law, the broad acceptance of relaxed semantics and the O(n!) worst case verification complexity of sequential histories motivate a new approach to concurrent correctness. Desiderata for a new correctness condition are that it be independent of sequential histories, compositional over objects, flexible as to timing, modular as to semantics and free of inherent locking or waiting. This dissertation proposes Quantifiability, a novel correctness condition based on intuitive first principles. Quantifiablity is formally defined with its system model. Useful properties of quantifiability such as compositionality, measurablility and observational refinement are demonstrated. Quantifiability models …

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One Pint At A Time: Documenting The Black Experience In American Craft Beer, Aaron Hose Dec 2021

One Pint At A Time: Documenting The Black Experience In American Craft Beer, Aaron Hose

Electronic Theses and Dissertations, 2020-2023

One Pint at a Time is a documentary feature by Aaron Hosé, created as part of the requirements for earning a Master of Fine Arts in Feature Film Production from the University of Central Florida. This is the first documentary film in history to focus exclusively on the stories of African American beermakers and brewery owners, their ties to ancient Egyptian and African brewing traditions, and how they are trying to make their mark within the business of craft beer; a multi-billion-dollar industry in which merely one percent of breweries are Black-owned and operated. Following the guidelines of UCF's program, …

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Human Behavior In Domestic Environments: Prediction And Applications, Sharare Zehtabian Dec 2021

Human Behavior In Domestic Environments: Prediction And Applications, Sharare Zehtabian

Electronic Theses and Dissertations, 2020-2023

A longstanding goal of human behavior science is to model and predict how humans interact with each other or with other systems. Such models are beneficial and have many applications, including designing and implementing assistive technologies, improving users' experiences and quality of life and making better decisions to create public policies. Behavior is highly complex due to uncertainties and a lack of scientific tools to measure it. Hence prediction of human behavior cannot be 100% accurate. However, prediction is also not hopeless because the biological needs, as well as cultural conventions (for instance, regarding meal times) set the general patterns …

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Framework Of Big Data Analytics In Real Time For Healthcare Enterprise Performance Measurements, Ahmed Mohamed Dec 2021

Framework Of Big Data Analytics In Real Time For Healthcare Enterprise Performance Measurements, Ahmed Mohamed

Electronic Theses and Dissertations, 2020-2023

Healthcare organizations (HCOs) currently have many information records about their patients. Yet, they cannot make proper, faster, and more thoughtful conclusions in many cases with their information. Much of the information is structured data such as medical records, historical data, and non-clinical information. This data is stored in a central repository called the Data Warehouse (DW). DW provides querying and reporting to different groups within the healthcare organization to support their future strategic initiatives. The generated reports create metrics to measure the organization's performance for post-action plans, not for real-time decisions. Additionally, healthcare organizations seek to benefit from the semi-structured …

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Understanding The Behavior Of The Covid-19 Pandemic Using Data Analytics, Mohammad Reza Davahli Dec 2021

Understanding The Behavior Of The Covid-19 Pandemic Using Data Analytics, Mohammad Reza Davahli

Electronic Theses and Dissertations, 2020-2023

In December 2019, China announced the breakout of a new virus identified as coronavirus SARS-CoV-2 (COVID-19), which soon grew exponentially and became a global pandemic. Despite strict actions to mitigate the spread of the virus in various countries, the COVID-19 pandemic resulted in a significant loss of human life in 2020 and 2021. To better understand the pandemic, this doctoral research incorporated data analytics to evaluate the behavior and impacts of the virus. The doctoral research contributed to the scientific body of the knowledge in different ways including (1) presenting a systematic literature review of current research and topics about …

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"Clothes Make Men": Clothing And The Embodiment Of Gender In Virginia, 1750-1775, Rhiannon O'Neil Dec 2021

"Clothes Make Men": Clothing And The Embodiment Of Gender In Virginia, 1750-1775, Rhiannon O'Neil

Electronic Theses and Dissertations, 2020-2023

This study explores how late colonial Virginians used clothing to control, enforce, and negotiate gender. Gender, both as a system of power and as a category of social identity, became linked with the material forms of clothing that Virginians wore in their everyday lives. The identification of clothing with the body enabled Virginians to actively make choices about how to perform themselves to the wider culture of observation and perception present in the colony. Dress was ubiquitous, but its meanings were variable, changing, and unstable. In eighteenth-century Virginia, Anglo-descended colonists imported ideals from Britain, which then produced Chesapeake-specific gender relationships, …

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Studying Users Interactions And Behavior In Social Media Using Natural Language Processing, Sultan Alshamrani Dec 2021

Studying Users Interactions And Behavior In Social Media Using Natural Language Processing, Sultan Alshamrani

Electronic Theses and Dissertations, 2020-2023

Social media platforms have been growing at a rapid pace, attracting users' engagement with the online content due to their convenience facilitated by many useful features. Such platforms provide users with interactive options such as likes, dislikes as well as a way of expressing their opinions in the form of text (i.e., comments). As more people engage in different social media platforms, such platforms will increase in both size and importance. This growth in social media data is becoming a vital new area for scholars and researchers to explore this new form of communication. The huge data from social media …

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Using Iphone Significant Location Data To Improve Air Pollution Exposure Estimation, Elizabeth Eastman Dec 2021

Using Iphone Significant Location Data To Improve Air Pollution Exposure Estimation, Elizabeth Eastman

Electronic Theses and Dissertations, 2020-2023

An accurate estimation of human exposure to ambient air pollution is crucial for air pollution health studies. Time-activity patterns may introduce substantial uncertainties in exposure estimation. As smartphones are becoming increasingly popular and their ownership is becoming ubiquitous in the US. Virtually all smartphones can collect location data, and such data is continuously somewhere. Therefore, it is clear that such stored location data has the potential to be used for characterizing an individual's time-activity patterns for air pollution health studies. However, studies on the accuracy and feasibility of using a smartphone's location data in air pollution exposure estimation are still …

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High Spectral Brightness, Broad Area Quantum Cascade Lasers, Enrique Sanchez Cristobal Dec 2021

High Spectral Brightness, Broad Area Quantum Cascade Lasers, Enrique Sanchez Cristobal

Electronic Theses and Dissertations, 2020-2023

Quantum cascade lasers are unipolar semiconductor lasers that offer a unique combination of compact size, high efficiency, high optical power, and flexibility to achieve a targeted emission wavelength with the same laser core material composition, employing so-called bandgap engineering. Since their invention in 1994, watt-level CW power with 5 to 20 % wallplug efficiency was demonstrated for QCLs throughout the entire 4 to 12 µm range, which makes QCLs very attractive for a number of practical applications. Our earlier work on broad-area QCLs emitting in the 4.6 µm to 5.7 µm spectral range demonstrated that CW power scaling with lateral …

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Assessment Of Leadership Styles And Lean Six Sigma Critical Success Factors In The Aerospace And Defense Industry, Corey Gellis Dec 2021

Assessment Of Leadership Styles And Lean Six Sigma Critical Success Factors In The Aerospace And Defense Industry, Corey Gellis

Electronic Theses and Dissertations, 2020-2023

The Aerospace and Defense industry has shifted into a global competitive market that is prioritizing innovative advancements in technological capabilities. Corporations are now having to further develop customer focused strategies based in adding value while reducing costs. Large manufacturing corporations often embrace continuous improvement methodologies, such as Lean Six Sigma, for process improvement. Many organizations have received minimal benefit from the methodology which may link back to leadership and culture. This research examined which styles of leadership are most effective when trying to gain the most value from Lean Six Sigma within manufacturing. The research study surveyed 112 black belt …

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Difficult History Education Via Design-Based Research: Teaching Historical Empathy Using Lucie Aubrac And The French Resistance As A Case Study, Sahar Eissa Dec 2021

Difficult History Education Via Design-Based Research: Teaching Historical Empathy Using Lucie Aubrac And The French Resistance As A Case Study, Sahar Eissa

Electronic Theses and Dissertations, 2020-2023

Technology-enhanced learning environments (TELEs) are educational tools that enable students to acquire knowledge, improving the quality of their educational experience. Educators face many challenges when teaching difficult histories about French resisters in World War II, such as Lucie Aubrac. Resisters' histories include deep emotions, choices, and hard decisions. There is a need for a new approach for teaching these topics and designing innovative digital tools to encourage educators and students to explore them. The current study designs and evaluates a TELE to teach difficult history via a historical empathy approach that engages students with difficult histories and provides them with …

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The Effect Of The Medilepsy Mobile App On Medication Adherence And Transition Readiness In Adolescents And Young Adults With Epilepsy, Michelle Tall Dec 2021

The Effect Of The Medilepsy Mobile App On Medication Adherence And Transition Readiness In Adolescents And Young Adults With Epilepsy, Michelle Tall

Electronic Theses and Dissertations, 2020-2023

Medication nonadherence and lack of transition readiness are global challenges for individuals living with epilepsy and their families. Medication adherence measures the level of compliance with healthcare providers' treatment recommendations. Transition readiness is the gradual steps patients take to develop independence and self-management as they transfer from pediatric to adult healthcare models. Factors impacting medication adherence and transition readiness skills include developmental stage/age; forgetfulness; family/caregivers; socioeconomic status; knowledge/attitude about the disease; side effects; number of medications; and subjective and objective quantifications of adherence. One promising intervention for patients and families is mobile technology used for reaching, teaching, and communicating. However, …

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Nonlinear Light-Matter Interactions In Novel Crystals For Broadband Mid-Infrared Generation, Taiki Kawamori Dec 2021

Nonlinear Light-Matter Interactions In Novel Crystals For Broadband Mid-Infrared Generation, Taiki Kawamori

Electronic Theses and Dissertations, 2020-2023

Mid-infrared (MIR) laser sources have demonstrated diverse applications in science and technology. For spectroscopy applications, numerous molecules have unique absorption features in this range, and one needs a spectrally broad coherent laser source for parallel detection of mixtures of species. Frequency down-conversion in nonlinear optical materials via second-order nonlinear susceptibility is one of the promising techniques to generate the spectral coverage of more than an octave in the MIR, assisted by emerging novel crystals. The nonlinear light-matter interactions in such special crystals as ZnSe ceramics have not been analyzed. Additionally, through the use of high-intensity few-cycle optical pulses, high-order nonlinear …

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Communities Of Play And Practice: Collaborating With Audiences And Coworkers In Performative Online Spaces, Paul Oppold Dec 2021

Communities Of Play And Practice: Collaborating With Audiences And Coworkers In Performative Online Spaces, Paul Oppold

Electronic Theses and Dissertations, 2020-2023

This study describes an ethnographic investigation of Communities of Play within Communities of Practice. As professional 'content creators', whose 'work' is 'play', are increasingly interacting with non-professional content consumers, whose 'play' is a kind of 'work', the barriers between 'work' and 'play' are increasingly dissolving. The purpose of this study was to examine the nature and frequency of the professionals' interactions with coworkers in an office and with the content consumers while working from home. Data were collected in the form of gameplay videos uploaded by the professional streamers from January of 2017 to March of 2018, downloaded by the …

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The Potential Of Location Data For Contact Tracing And Understanding Individual Mobility During The Covid-19 Pandemic, Marcus Figaro Dec 2021

The Potential Of Location Data For Contact Tracing And Understanding Individual Mobility During The Covid-19 Pandemic, Marcus Figaro

Electronic Theses and Dissertations, 2020-2023

In this study, we first review contact tracing methods used during the COVID-19 pandemic and provide an analysis of the benefits and drawbacks of different data collection and privacy protection methods. Our findings provide the benefits and drawbacks of using GPS versus Bluetooth for contact tracing, as well as the different data collection and storage methods and their effectiveness in protecting user privacy. We then analyze Twitter data to understand individual mobility behavior and sentiment by using a Natural Language Processing tool on text content of user tweets and Tweet coordinate data. Social media's ability to provide data on location …

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Optimizing Mixed Reality Simulation To Support Stem Graduate Teaching Assistants In Developing Student-Centered Pedagogical Skills, Constance Doty Dec 2021

Optimizing Mixed Reality Simulation To Support Stem Graduate Teaching Assistants In Developing Student-Centered Pedagogical Skills, Constance Doty

Electronic Theses and Dissertations, 2020-2023

Physics graduate teaching assistants (GTA) often instruct student-centered lab and recitation sections at large universities, creating the opportunity to positively impact students. However, as STEM GTA professional development varies by institution and discipline, GTAs rarely receive feedback about their teaching. In K-12 teacher preparation, "microteaching", where a teacher teaches a lesson to peers acting as students, is used to provide feedback. Research has demonstrated benefits to microteaching in K-12 teacher and STEM GTA preparation, but practicing teachers find microteaching can lack authenticity. Recently, researchers have explored integrating technology, like simulation, in pedagogy training to provide a more authentic training experience. …

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Enhancement And Evaluation Of An Online Module On Functional Behavior Assessment Using Universal Design For Learning, Sacha Cartagena Dec 2021

Enhancement And Evaluation Of An Online Module On Functional Behavior Assessment Using Universal Design For Learning, Sacha Cartagena

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to evaluate the effectiveness of UDL-based enhancements of an online module on functional behavior assessment. The UDL framework is an instructional design framework designed to enhance access, engagement, and learning using three overarching principles: multiple means of engagement, multiple means of representation, and multiple means of action and expression. The researcher utilized a two-group randomized control trial (RCT) with pre- and posttest measures. The control group completed a publicly available module on functional behavior assessment while the intervention group completed an enhanced version of the same module. Results demonstrate that both the intervention and …

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An Analysis Of Performance-Based Funding Policies At An Open Access Institution, John Brady Dec 2021

An Analysis Of Performance-Based Funding Policies At An Open Access Institution, John Brady

Electronic Theses and Dissertations, 2020-2023

Performance-based funding policies have become popular among state legislators seeking ways to hold public higher education institutions accountable. Approximately 30 states currently use performance-based funding policies to tie state appropriations to institutional outcomes according to a defined set of metrics. Despite the popularity of the policy approach, very little empirical evidence exists to suggest that performance-based funding is effective in producing the often-intended outcomes of increased student retention and degree attainment rates. Numerous studies have indicated that these policies may produce unintended outcomes including the restriction of access, the gaming of performance-based funding systems, and the widening of equity gaps. …

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How Does A Veteran Teacher Implement A Prekindergarten Math Curriculum?, Heidi Butterfield Dec 2021

How Does A Veteran Teacher Implement A Prekindergarten Math Curriculum?, Heidi Butterfield

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to explore how a veteran teacher implemented a state-approved commercial math curriculum in a prekindergarten classroom. In this action research study, guided by ethnographic principles, I employed Spradley's (2016) developmental research sequence to study what resources from the curriculum the teacher used, how the teacher adapted the curriculum, and what influenced the decisions the teacher made while implementing the curriculum. Data collected for this study included: the teacher guide provided by the commercial curriculum; teacher lesson plans; photographs of student created artifacts; the teacher's reflection journal and notes; and videos of a teacher implementing …

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Change Sustainment Model (Csm) To Address Industry 4.0 In A Classified Environment, Hamilton Ervin Dec 2021

Change Sustainment Model (Csm) To Address Industry 4.0 In A Classified Environment, Hamilton Ervin

Electronic Theses and Dissertations, 2020-2023

Business and engineering have long intersected with each other in industry. In actuality, they are inseparable. That notion drove the thought process and actions taken to observe phenomena within a U.S. Fortune 500, Aerospace & Defense industry, Department of Defense, independent contractor. In Aerospace & Defense, the ability to implement technology freely and change to address an ever-evolving technological landscape in the world has proven to be difficult given the nature of the work performed. U.S. national security must be protected at all times, therefore information sharing guided by a "need-to-know" basis create an inability to easily implement organizational change …

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An Exploratory Investigation Of Grit And Its Relationship To Student Integration In Athletic Training Education Programs, Carlos Gual Dec 2021

An Exploratory Investigation Of Grit And Its Relationship To Student Integration In Athletic Training Education Programs, Carlos Gual

Electronic Theses and Dissertations, 2020-2023

Students must enroll in rigorous accredited academic programs and pass the National Board of Certification (BOC) examination to become athletic trainers. Therefore, studies in athletic training and student achievement focus on student persistence/retention and BOC Examination pass rates. The majority of studies conclude that cognitive measures like grade point average (GPA) have a relationship with both retention and exam pass rates. However, research should also consider meta-cognitive factors (i.e., personality traits). The purpose of this study was to examine the relationship between athletic training students' grit (a metacognitive factor) and their academic, clinical, and social integration. The population for this …

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Secondary Teachers' Perceptions Of Teacher Authenticity, Robert Hovel Dec 2021

Secondary Teachers' Perceptions Of Teacher Authenticity, Robert Hovel

Electronic Theses and Dissertations, 2020-2023

Teachers are confronted with many obstacles when learning to be the best teacher they can for their students. Teachers face challenges such as working with introverted students, developing activities that are fruitful and sustainable for varying students, and keeping students all focused on the goal of learning (Tasgin & Tunc, 2018). However, the authenticity of an instructor, while being researched in college and counseling settings, has not been sufficiently examined in high school settings. The authenticity of the instructor is a motivating factor for students at the college level (Kreber & Klampfleitner, 2013; Kreber & Klampfleitner, 2012; Kreber et al., …

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Using Expectation Violation Theory To Evaluate Dialectal Bias In Courtroom Contexts, Christina Joseph Dec 2021

Using Expectation Violation Theory To Evaluate Dialectal Bias In Courtroom Contexts, Christina Joseph

Electronic Theses and Dissertations, 2020-2023

There is much evidence to indicate the role of speaker accent expectations and its impacts on the subsequent rating of the speaker. Additionally, examples including the Central Park Five as well as Rachel Jeantel of the Trayvon Martin case indicate the impacts of this speaker rating particularly in the context of the courtroom. This necessitates the further evaluation of the impact of dialectal bias on speaker ratings especially in the context of a courtroom due to the severity of the impacts. Utilizing a 4x2 between subjects experimental design manipulating on the basis of both dialect and speaker expectation, this study …

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An Exploration Of The Impact Of Student Employment And Retention: A Correlational Analysis, Noreen Lewis Dec 2021

An Exploration Of The Impact Of Student Employment And Retention: A Correlational Analysis, Noreen Lewis

Electronic Theses and Dissertations, 2020-2023

"With so many students working, and such large numbers devoting a considerable amount of time to one or more jobs, work is – after going to class- the most common activity in which undergraduates engage" (Kuh, 2018, p. ix). An under-researched factor to investigate why students retain, is participation in an on-campus student employment program. The purpose of the study is to explore the relationship between a student's participation in student employment and if the student retains from their first to second year. Understanding this relationship can provide an opportunity to create positive impact for both the student and institution …

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Acoustoelectric Amplification In Piezoelectric-Silicon Micromachined Lamb Wave Devices, Hakhamanesh Mansoorzare Dec 2021

Acoustoelectric Amplification In Piezoelectric-Silicon Micromachined Lamb Wave Devices, Hakhamanesh Mansoorzare

Electronic Theses and Dissertations, 2020-2023

In this dissertation, heterostructured micro-acoustic devices are explored that leverage the interactions between acoustic phonons and electrons to enable radio frequency (RF) signal amplification or attenuation. Thin films of piezoelectric and semiconductor material are tailored into a heterostructure that allows for a strong acoustoelectric (AE) effect due to the combination of high electromechanical coupling and high electron drift velocity in said films respectively. In such devices, the relative electron drift and acoustic velocities could determine whether the RF signal undergoes AE gain or loss, rendering the device non-reciprocal. This is a highly sought-after property for building isolators and circulators which …

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A Mixed-Methods, Grounded Theory Study Of Online Meaning-Making During The Pandemic, Kaitlyn Montcrieff Dec 2021

A Mixed-Methods, Grounded Theory Study Of Online Meaning-Making During The Pandemic, Kaitlyn Montcrieff

Electronic Theses and Dissertations, 2020-2023

To be human is to seek to understand the known and unknown world. The Covid-19 pandemic offers researchers the opportunity to examine online meaning-making on a more ubiquitous magnitude than ever experienced in history, without positioning the digital world as less authentic, or distinct, from the physical. Using mixed-methods grounded theory, this study posed the research question: (RQ) How do high school parents use an online community to (re)conceptualize aspects of contemporary society? The NRC Emotion Intensity lexicon (Mohammed, 2018) was used to score online forum posts from 2018-2021 using eight emotions to quantitatively represent changes over time. The qualitative …

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Self Adaptive Reinforcement Learning For High-Dimensional Stochastic Systems With Application To Robotic Control, Sayyed Jaffar Ali Raza Dec 2021

Self Adaptive Reinforcement Learning For High-Dimensional Stochastic Systems With Application To Robotic Control, Sayyed Jaffar Ali Raza

Electronic Theses and Dissertations, 2020-2023

A long standing goal in the field of artificial intelligence (AI) is to develop agents that can perceive richer problem space and effortlessly plan their activity in minimal duration. Several strides have been made towards this goal over the last few years due to simultaneous advances in compute power, optimized algorithms, and most importantly evident success of AI based machines in nearly every discipline. The progress has been especially rapid in area of reinforcement learning (RL) where computers can now plan-ahead their activities and outperform their human rivals in complex problem domains like chess or Go game. However, despite encouraging …

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An Examination Of Precollegiate Education Programs In The K-12 Context: The Role Of Student Motivation And Perception And Recruitment And Retention Strategies For Successful Outcomes, Daniel Santos Dec 2021

An Examination Of Precollegiate Education Programs In The K-12 Context: The Role Of Student Motivation And Perception And Recruitment And Retention Strategies For Successful Outcomes, Daniel Santos

Electronic Theses and Dissertations, 2020-2023

State leaders have responded to recruiting and retaining teachers in the workforce with Grow Your Own (GYO) programs for recruiting secondary students or community members into education. An example of a GYO is the precollegiate Teacher Academy (TA) program offered in local high schools as a career and technical education pathway. The TA provides guidance for high school students thinking about the teaching profession. TA educators foster students' interest and recruit and retain them in education by exploring their motivations. This study was a triangulated mixed methods study with the quantitative/qualitative model of utilizing both data sets to determine student …

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The Effects Of A Tactile Display On First Responder Performance, Michael Schwartz Dec 2021

The Effects Of A Tactile Display On First Responder Performance, Michael Schwartz

Electronic Theses and Dissertations, 2020-2023

Firefighting is a dangerous and difficult task. Simulation affords researchers and practitioners the ability to examine performance and training in adverse conditions while preserving life, offering repeatable scenarios, and reducing costs. Multiple Resource Theory is used in this study as a model for assessing alternate sensory channels for information delivery when the optimal channel is not available. Specifically, this study tests the influence of a waist-worn vibrotactile display to assist navigation when visibility is reduced in a firefighter simulation. The present study measures participants' objective performance and self-reported workload while navigating a simulated fireground. Results from 70 research participants revealed …

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