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Modeling, Reconstruction, And Trend Analysis Of Global Storm Surges Using A Data-Driven Approach, Michael Getachew Tadesse Jan 2022

Modeling, Reconstruction, And Trend Analysis Of Global Storm Surges Using A Data-Driven Approach, Michael Getachew Tadesse

Electronic Theses and Dissertations, 2020-2023

Storm surge is the deadliest component of extreme sea levels with one of the highest global death tolls per event. Tide gauges are the primary sources for historical sea-level measurements from which storm surge data is extracted. However, tide gauges are unevenly distributed across the globe, and most records are short in length and have gaps; this creates a challenge to assess long-term trends and perform robust extreme value analysis. This dissertation introduces a data-driven storm surge modeling framework that trains statistical and machine learning models with atmospheric and oceanographic variables. Data-driven models (DDMs) are trained and validated for more …

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Predictors Of Technology Use Among Older Adults: Evidence Ranging From Non-Users To Elite Users, Xiaoqing Wan Jan 2022

Predictors Of Technology Use Among Older Adults: Evidence Ranging From Non-Users To Elite Users, Xiaoqing Wan

Electronic Theses and Dissertations, 2020-2023

Older adults tend to under-utilize digital technology and online services that can yield substantial benefits to their health and wellbeing. Addressing this problem requires determining robust and consistent predictors of older adults' technology use. Also, few studies have examined older adults who are elite users of digital technology, who may provide insights into how individuals can prepare to become competent users of future technologies as they age. To address these gaps in the technology and aging literature, this dissertation offers (1) large-scale machine learning analyses, (2) longitudinal perspectives, (3) age group comparisons across the adult life span, (4) the novel …

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Enhancing The Decision-Making Process For Public-Private Partnerships' Concession Agreements: Socio-Economic Sustainability Approaches, Faisal Alghamdi Jan 2022

Enhancing The Decision-Making Process For Public-Private Partnerships' Concession Agreements: Socio-Economic Sustainability Approaches, Faisal Alghamdi

Electronic Theses and Dissertations, 2020-2023

Designing a concession for Public-Private Partnerships (PPP) agreements is a complicated process due to the number of variables that need to be considered. The PPP concession has many parameters and components, and a change in one component will considerably impact other components. Hence, the determination of the fair values of the concession components needs to be based on mutual benefits between the concession participants. The concession participants have different parts in the development of the concession; hence, they have different perspectives and goals. Therefore, the concession design needs to be constructed to balance the interests of the involved parties to …

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The Test-Retest Reliability Of Single Leg Jump Performance Using The Drift Protocol In Division I Baseball Pitchers, Amy Bergquist Jan 2022

The Test-Retest Reliability Of Single Leg Jump Performance Using The Drift Protocol In Division I Baseball Pitchers, Amy Bergquist

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to determine the test-retest reliability of the Drift protocol with and without utilizing an arm swing, and to establish if this is an effective assessment tool for single leg vertical jump. Thirteen male Division I Baseball pitchers (18-35 yrs.) completed four testing visits where a single leg hopping protocol was assessed. Visit one consisted of the consent process and familiarization with the Drift protocol. Visits two, three, and four involved two trials of the protocol, with and without an arm swing. The protocol consisted of five single leg hops on both the stride and …

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First And Third Order Susceptibility Of Organic Molecules, Hao-Jung Chang Jan 2022

First And Third Order Susceptibility Of Organic Molecules, Hao-Jung Chang

Electronic Theses and Dissertations, 2020-2023

Illuminating a material with intense laser excitation may change its properties and result in nonlinear absorption (NLA) and nonlinear refraction (NLR). In this dissertation we study the nonlinear absorption of organic compounds, the effect of extremely nondegenerate NLR in semiconductors, and the linear refractive index of organic solvents. In liquids, the refractive index has been studied for decades and different kinds of refractometers have been proposed. However, most of the reported values are in the visible region and only for commonly used solvents. We proposed a new interferometer-based refractometer that allows us to measure the refractive index from the visible …

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Utilizing Geographic Information Systems To Explore The Mortuary Landscape At Kuelap, Peru, Hannah Haynes Jan 2022

Utilizing Geographic Information Systems To Explore The Mortuary Landscape At Kuelap, Peru, Hannah Haynes

Electronic Theses and Dissertations, 2020-2023

The placement of the dead is important for considering social memory, a source of collective knowledge and experiences that shapes social group identity. Mortuary placement is one form of ritual action that communities undertake to remember the dead. This allows anthropologists to ask questions about how humans engaged socially with each other and the landscape. This thesis utilizes an innovative methodological approach combining geographic information systems (GIS) and stable carbon and nitrogen isotope analysis to investigate mortuary variation and social identity within the Late Intermediate Period site (A.D. 800 – 1535) Kuelap in the northern Peruvian Andes. Spatial, demographic, and …

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Computational Modeling Of Respiratory Airflow In Human Distal Airways Using Hybrid Lung Model, Adnan Islam Jan 2022

Computational Modeling Of Respiratory Airflow In Human Distal Airways Using Hybrid Lung Model, Adnan Islam

Electronic Theses and Dissertations, 2020-2023

A major challenge in the Computational Fluid Dynamics (CFD) modeling of the human respiratory system is the complex variation of geometric scale from the trachea to the peripheral airways. The current literature on image-based lung flow analysis is limited to a few (typically 5) generations beyond the trachea. Such studies, which are limited largely by computational intensity and computational cost, also have limited accuracy. In this study we propose a hybrid methodology that enables CFD analysis from the middle to the distal airways through to the alveolar level. A hybrid lung model is generated where the middle airways are reconstructed …

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The Narratives Of Latina Students Who Have Participated In Invention Education, Cristina Saenz Jan 2022

The Narratives Of Latina Students Who Have Participated In Invention Education, Cristina Saenz

Electronic Theses and Dissertations, 2020-2023

Less than 2% of patent holders in the United States identify as Latina. This statistic is problematic considering the increasing Latinx population and the empirical evidence which indicates the benefits of drawing on diverse perspectives in the invention ecosystem. In an effort to increase diversity among inventors and patent holders, K-12 programs have been created to provide opportunities for students to participate in the iterative and recursive processes of inventing. One example is the emerging field of invention education. Invention education is an educational approach which teaches students how to identify and solve problems within their communities. Little is known …

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A Phenomenological Study Of Educational Experiences Among Dark-Skinned African American Girls During Adolescence, Tamika Williams Jan 2022

A Phenomenological Study Of Educational Experiences Among Dark-Skinned African American Girls During Adolescence, Tamika Williams

Electronic Theses and Dissertations, 2020-2023

The problem I address in this study is the persistence of inequity and low-self-concept among Black students. This study examines the ways in which dark-skinned African American girls' educational experiences support or impair their identity development. It adds to the body of knowledge by exploring personal journeys toward self-awareness amid family, school, and societal realities. While research exists regarding the achievement gap between Black students and other groups and the efforts to close that gap, research that specifically addresses the needs of Black girls is lacking. This study is significant because it brings attention to an underrepresented group, Black girls. …

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Synergistic Impacts Of Climate Change And Human Induced Stressors On The Apalachicola Bay Food Web, Kira Allen Jan 2022

Synergistic Impacts Of Climate Change And Human Induced Stressors On The Apalachicola Bay Food Web, Kira Allen

Electronic Theses and Dissertations, 2020-2023

Apalachicola Bay, an estuary located in northwest Florida, is likely to experience an increase in climate change and human-induced stressors, such as sea level rise and changes in freshwater inflow, in the future. A coupled hydrodynamic and food web modeling approach was used to simulate future scenarios of low and high river flow and sea level rise in Apalachicola Bay from 2020 to 2049 and demonstrate the range of temporal and spatial changes in water temperature, salinity, fisheries species populations and the broader food web. Concurrent with model development, a survey of Apalachicola Bay stakeholders was conducted to assess stakeholder …

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Third Order Nonlinear Optics In Solids, Nicholas Cox Jan 2022

Third Order Nonlinear Optics In Solids, Nicholas Cox

Electronic Theses and Dissertations, 2020-2023

Nonlinear optical effects occur when strong electromagnetic waves induce changes in a medium that affect its own propagation or that of another wave. Third order optical nonlinearities scale linearly with irradiance and lead to effects like two-photon absorption and nonlinear refraction. This work focuses on the experimental and theoretical study of two-photon absorption in crystalline solids. We begin by detailing the quantum mechanical states of electrons in solids along with the computational approaches to calculate their band structure. Next, a theoretical model for the linear and nonlinear optical interaction of light with matter is presented in a many-body formalism. This …

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Bayesian Spatiotemporal Modeling With Gaussian Processes, Qing He Jan 2022

Bayesian Spatiotemporal Modeling With Gaussian Processes, Qing He

Electronic Theses and Dissertations, 2020-2023

Bayesian spatiotemporal models have been successfully applied to various fields of science, such as ecology and epidemiology. The complicated nature of spatiotemporal patterns can be well represented through priors such as Gaussian processes. This dissertation is focused on two applications of Bayesian spatiotemporal models: a) anomaly detection for spatiotemporal data with missingness and b) zero-inflated spatiotemporal count data analysis. Missingness in spatiotemporal data prohibits anomaly detection algorithms from learning characteristic rules and patterns due to the lack of most data. This project is motivated by a challenge provided by the National Science Foundation (NSF) and the National Geospatial-Intelligence Agency (NGA). …

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If Found: Exploring Death Through Animated Media, Hannah Huffman Jan 2022

If Found: Exploring Death Through Animated Media, Hannah Huffman

Electronic Theses and Dissertations, 2020-2023

If Found is a narrative 2D animated short film that explores our connection with death. The film makes use of the conventions of a Western fairy tale setting to make this difficult topic more digestible. This works in conjunction with the East Asian storytelling format of Kishotenketsu, a narrative convention focused on a conflict-less plot. Death is not something we can defeat; rather, it is a natural force with which we all must make peace. By following this traditional format, the film also explores and shows appreciation for the impacts of East Asian thought, storytelling, and animation on Western culture. …

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Using Simulation For Law Enforcement De-Escalation Training, Julie Kent Jan 2022

Using Simulation For Law Enforcement De-Escalation Training, Julie Kent

Electronic Theses and Dissertations, 2020-2023

Law enforcement needs simulation practice tailored to de-escalation skills. Law enforcement officers spend most of their training time practicing how to use force appropriately and very little time practicing how to avoid using force. There is little research into the best ways for law enforcement to reduce their use of force and the best ways to provide training to individuals to coach them to avoid using force. There are many training programs promoting de-escalation techniques, but there is little research into the effectiveness of these programs beyond the ability of individuals to perform the skills that are trained. There is …

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Decentralization And Violence, Alexander Norat Jan 2022

Decentralization And Violence, Alexander Norat

Electronic Theses and Dissertations, 2020-2023

How does the political environment that a group operates affect whether they engage in terrorism? My research is concerned with how political opportunities, which I conceptualize in terms of political decentralization, affect how groups engage with the state, and whether they will engage in terrorism. Previous research has indicated that decentralization can reduce violence but can pose stability problems in other countries. I hypothesize that states with higher levels of decentralization will have lower levels of violence. I believe this works by allowing minority groups more access to power. Because they have access to political power, there is less incentive …

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Assessment Of Sexual And Protective Behavioral Strategies: Development Of The Sexual And Negative Dating Inventory, Roselyn Peterson Jan 2022

Assessment Of Sexual And Protective Behavioral Strategies: Development Of The Sexual And Negative Dating Inventory, Roselyn Peterson

Electronic Theses and Dissertations, 2020-2023

Adverse sexual outcomes (ASOs) including sexual violence, risky sex, and sexual regret are highly prevalent among college students, with 20-25% of female undergraduates experiencing sexual assault, at least 60% of undergraduates engaging in risky sex, and lifetime rate of regretted sexual experiences as high as 72%. ASOs are associated with increased psychological problems, increased alcohol use, and decreased protective behavioral strategies (PBS). The most recent measure of dating and sexual PBS was published over a decade ago. The current study is the development and validation of an updated measure of dating and sexual PBS; the Sexual and Negative Dating Inventory …

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Authoring Tools For Augmented Reality Scenario Based Training Experiences, Andres Vargas Gonzalez Jan 2022

Authoring Tools For Augmented Reality Scenario Based Training Experiences, Andres Vargas Gonzalez

Electronic Theses and Dissertations, 2020-2023

Augmented Reality's (AR) scope and capabilities have grown considerably in the last few years. AR applications can be run across devices such as phones, wearables, and head-mounted displays (HMDs). The increasing research and commercial efforts in HMDs capabilities allow end users to map a 3D environment and interact with virtual objects that can respond to the physical aspects of the scene. Within this context, AR is an ideal format for in-situ training scenarios. However, building such AR scenarios requires proficiency in game engine development environments and programming expertise. These difficulties can make it challenging for domain experts to create training …

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Budgetary Unoccupied Aerial Systems For Environmental Surveying: A Social Perspective, Tyler Copeland Jan 2022

Budgetary Unoccupied Aerial Systems For Environmental Surveying: A Social Perspective, Tyler Copeland

Electronic Theses and Dissertations, 2020-2023

Unoccupied Aerial Systems (UASs) have undergone extensive growth in the past decade. This growth has resulted in the application of these systems from highly niche application to application across many fields including consumer usage. This research explores the implementation of UASs for environmental surveying that has an impact on social groups. While much literature exists using custom UAS systems with large budgets, the use of budgetary consumer available UASs for these purposes is still in its infancy. This research suggests that budgetary and accessible consumer UAS systems can be used to benefit social groups that lack access to high-quality geographic …

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The Cypress Dome 2022, Issue 33, The Cypress Dome Society Jan 2022

The Cypress Dome 2022, Issue 33, The Cypress Dome Society

The Cypress Dome

The Cypress Dome Society (CDS) offers an outlet for artists at UCF. We chose to name ourselves after the beautiful cypress dome ecosystem that exists on the UCF campus. In the same way that cypress domes create an environment based in biodiversity and rich land, we hope to foster a space that promotes diversity and rich creative work for students. We set our roots in the deepest parts of the literary community and surround ourselves with students eager to participate in the arts. Every year, we engage with our community by encouraging students to submit to our literary magazine, The …

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Light Trapping Transparent Electrodes, Mengdi Sun Jan 2022

Light Trapping Transparent Electrodes, Mengdi Sun

Electronic Theses and Dissertations, 2020-2023

Transparent electrodes represent a critical component in a wide range of optoelectronic devices such as high-speed photodetectors and solar cells. Fundamentally, the presence of any conductive structures in the optical path leads to dissipation and reflection, which adversely affects device performance. Many different approaches have been attempted to minimize such shadowing losses, including the use of transparent conductive oxides (TCOs), metallic nanowire mesh grids, graphene-based contacts, and high-aspect ratio metallic wire arrays. In this dissertation I discuss a conceptually different approach to achieve transparent electrodes, which involves recapturing photons initially reflected by highly conductive electrode lines. To achieve this, light-redirecting …

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Eco-Tya: An Exploration Of Youth Agency And The Role Of Environment In Creating Balanced Theatrical Collaborations, Sage Tokach Jan 2022

Eco-Tya: An Exploration Of Youth Agency And The Role Of Environment In Creating Balanced Theatrical Collaborations, Sage Tokach

Electronic Theses and Dissertations, 2020-2023

Systems of power in traditional theatrical and educational models may lead to controlled, efficient classrooms, but they do not help us facilitate creative, collaborative spaces. These power structures privilege some people over others and all people over environmental concerns. Eco-theatre artists emphasize the agency of more-than-human materials and encourage us to see our environment as a collaborator. Using eco-theatre theories in a synthesized methodology, this thesis explores how facilitators might interact differently with students and surroundings to disrupt power structures and lead to more inclusive collaborations. What tools and practices help students embrace challenges and work through tensions on their …

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Creating Themed Accessible Spaces Through Hospitality Design, Sidney Wolf Jan 2022

Creating Themed Accessible Spaces Through Hospitality Design, Sidney Wolf

Electronic Theses and Dissertations, 2020-2023

This thesis summarizes available literature about the individual requirements and specific design attributes needed to understand, apply, develop, and design a themed hotel with an emphasis in accessibility and inclusivity. This thesis contains a visual project and design guide that focuses on creating a themed space that offers modern means of accessibility for mobility aids, or for those who are deaf, hard of hearing, blind, or partially sighted. The guide summarizes literature on existing codes and explores other resources to adapt them to create an inclusive narrative environment. The visual project applies the material found in the guide and produces …

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Social Complexity And Water Management Strategies At Holtun, Guatemala, Melvin Rodrigo Guzman Piedrasanta Jan 2022

Social Complexity And Water Management Strategies At Holtun, Guatemala, Melvin Rodrigo Guzman Piedrasanta

Electronic Theses and Dissertations, 2020-2023

Water management strategies are intrinsically associated with the development of complex societies. Traditional approaches have often characterized these strategies as homogenous and monolithic. Recent studies have shown that water management among the ancient Maya was a significant source of power, but the strategies implemented, and the outcomes are highly variable and dependent on the landscape. The case of Holtun, a modest-sized site, adds to the growing body of water management research in ancient Maya archaeology as most water management systems are investigated in large primary centers. Although water resources at Holtun are relatively small, they supported large communities during the …

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Change Point Detection For Streaming Data Using Support Vector Methods, Charles Harrison Jan 2022

Change Point Detection For Streaming Data Using Support Vector Methods, Charles Harrison

Electronic Theses and Dissertations, 2020-2023

Sequential multiple change point detection concerns the identification of multiple points in time where the systematic behavior of a statistical process changes. A special case of this problem, called online anomaly detection, occurs when the goal is to detect the first change and then signal an alert to an analyst for further investigation. This dissertation concerns the use of methods based on kernel functions and support vectors to detect changes. A variety of support vector-based methods are considered, but the primary focus concerns Least Squares Support Vector Data Description (LS-SVDD). LS-SVDD constructs a hypersphere in a kernel space to bound …

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Sensory Overload: Creating Autism-Friendly Areas In Theme Parks Through Universal Design Principles, Lindsey Leffel Jan 2022

Sensory Overload: Creating Autism-Friendly Areas In Theme Parks Through Universal Design Principles, Lindsey Leffel

Electronic Theses and Dissertations, 2020-2023

This thesis project explores the application of Universal Design principles to the development of purpose-built rest and play spaces within United States theme parks that provide places of refuge for children with autism and their families. The goal is to offer ideas on how to create spaces where families and individuals can take a break from the over-stimulation of the traditional theme park environment in an area that has been specifically designed with their sensory needs in mind. Though the target demographic for these spaces is children with autism and their families, the ideas offered to create space will not …

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From Dna Logic Gates To Dna Nanorobots, Tatiana Molden Jan 2022

From Dna Logic Gates To Dna Nanorobots, Tatiana Molden

Electronic Theses and Dissertations, 2020-2023

Due to their biocompatibility and parallel data processing, DNA computational devices are highly desired for applications in diagnosis and treatment of cancer, infectious and genetic diseases. Much like in modern electronic devices, DNA computation is based on the logic gates - by directly interacting with DNA or RNA input molecules, they produce a specific output depending on their embedded logic function. This work is devoted to the development of functional parts of a future DNA nanorobot for biomedical applications. Specifically, we used DNA nanotechnology and the concept of multicomponent DNA probes to develop three parts of the DNA nanorobot: computing, …

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Journey To The Dragon's Gate: A Study Of Hybrid Ride Systems And How They Enhance Attraction Storytelling, Matthew Moore Jan 2022

Journey To The Dragon's Gate: A Study Of Hybrid Ride Systems And How They Enhance Attraction Storytelling, Matthew Moore

Electronic Theses and Dissertations, 2020-2023

The purpose of this thesis is to explore a new type of ride design which integrates one or more transitions between formats. Theme Park visitors have come to expect a certain type of immersive experience from attractions. Most rides in the parks are very predictable such as roller coasters which offer loops, drops, speed and quick turns, while dark rides offer a slower pace with the attention on storytelling. The solution to this situation is to combine two ride systems or more into a single ride. The ride system for my attraction begins with a free-floating boat ride navigating its …

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Exploring Best Practices Of Teaching Theatre For Social Change To Youth, Samantha Reser Jan 2022

Exploring Best Practices Of Teaching Theatre For Social Change To Youth, Samantha Reser

Electronic Theses and Dissertations, 2020-2023

What does it look like to have youth embody activism through theatre, and how do they take what they learned through theatre and implement it in their everyday lives? Many enter the field of Theatre for Young Audiences because they believe young people (that is, youth that are 18 and younger) have the power to change the world. While the Theatre for Young Audiences field often produces plays that teach young people about the power of change, it is also important to consider how we center and amplify youth voices in the conversations about societal change. As a teaching artist …

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Search Space Reduction Techniques For Solution Of Combinatorial Optimization Problems In Power System., Ranadhir Sarkar Jan 2022

Search Space Reduction Techniques For Solution Of Combinatorial Optimization Problems In Power System., Ranadhir Sarkar

Electronic Theses and Dissertations, 2020-2023

Power system is vulnerable to disastrous climate events due to sequential or successive equipment failure. In this dissertation, the problem of identifying the critical k-transmission lines that fail one after another in quick succession, and the distribution system restoration problem using tie-lines/sectionalizing switches formulated as a mixed-integer non-linear programming problem (MINLP) that determines load shed under various k-line removal scenarios are solved. These problems are combinatorial that have huge search space, and solution through enumeration is intractable for large power systems. For reduction of search space, the following mathematical tools are derived, (i) two power flow methods due to k-transmission …

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Optimization-Based Approaches To Low-Coherence Optical Diffraction Tomography, Seth Smith-Dryden Jan 2022

Optimization-Based Approaches To Low-Coherence Optical Diffraction Tomography, Seth Smith-Dryden

Electronic Theses and Dissertations, 2020-2023

Quantitative optical phase imaging techniques, such as optical diffraction tomography (ODT), are useful tools for refractive-index profiling. Many of them, however, rely on the weak-scattering assumptions, thus cannot be applied to multiple-scattering objects, or turbid media. In this thesis, I report several approaches for expanding the efficacy of ODT techniques and adapting them to new applications by use of low-coherence broadband illumination. First, I developed a method for ODT reconstruction using regularized convex optimization with a new phase-based fidelity criterion. The new criterion is necessary because objects with very different refractive-index distributions may produce similar diffracted fields (magnitude and principal-phase) …

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