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Enabling Large-Scale Transportation Electrification For Shared And Connected Mobility Systems, Md Rakibul Alam
Enabling Large-Scale Transportation Electrification For Shared And Connected Mobility Systems, Md Rakibul Alam
Graduate Thesis and Dissertation 2023-2024
Owing to advancements in technology, substantial investments within the automotive industry, and the formulation of supportive state policies, the future landscape of the transportation sector is poised to witness a shift from traditional internal combustion engine vehicles (ICEVs) to electric vehicles (EVs). While EVs have made inroads in the market, they still face significant hurdles in the form of range anxiety and prolonged charging durations, inhibiting their widespread adoption. To tackle these challenges, a comprehensive approach to smart transportation electrification is proposed, emphasizing the pivotal roles of infrastructure development, particularly in the allocation of charging stations, and strategic operational decisions, …
The Impact Math Interventions Have On Student Achievement In An Urban School Setting, Jennifer A. Bellinger
The Impact Math Interventions Have On Student Achievement In An Urban School Setting, Jennifer A. Bellinger
Graduate Thesis and Dissertation 2023-2024
Intense intervention is needed for students who have persistent math challenges and perform below grade level. In the classroom setting, teachers need to provide additional support for some students based on their specific needs. This correlational study was an examination of interventions' impact on student achievement in math. The sample comprised students enrolled in Algebra I during the 2021–2022 school year. The results of this study showed that interventions may have a positive impact on student performance, especially when carried out in the proper educational setting. The findings from the research showed that there is no significant statistical correlation between …
Assessment Of Midblock Pedestrian Crossing Facilities Using Surrogate Safety Measures And Vehicle Delay, Nafis Anwari
Assessment Of Midblock Pedestrian Crossing Facilities Using Surrogate Safety Measures And Vehicle Delay, Nafis Anwari
Graduate Thesis and Dissertation 2023-2024
This dissertation has contributed to the pedestrian safety literature by assessing and comparing safety benefits and traffic efficiency among midblock Rectangular Rapid Flashing Beacon (RRFB) and Pedestrian Hybrid Beacon (PHB) sites. Video trajectory data were used to calculate pedestrian Surrogate Safety Measures (SSMs) and vehicles' delay. Regression models of SSMs and vehicles' delay revealed that PHB sites offer more safety benefits, at the expense of increased vehicles' delay, compared to RRFB sites. The presence of the PHB, weekday, signal activation, lane count, pedestrian speed, vehicle speed, land use mix, traffic flow, time of day, and pedestrian starting position from the …
Dormant Propagules In Demographic Studies: A Recurrent Bias And Potential Solutions, Federico Borghesi
Dormant Propagules In Demographic Studies: A Recurrent Bias And Potential Solutions, Federico Borghesi
Graduate Thesis and Dissertation 2023-2024
In the face of unprecedented anthropogenic change, we increasingly turn to emergent technologies and extensive data sets for solutions that complement much needed systemic changes in our societies. These technological solutions, however, must be approached with care. We must recognize and address biases in the way data has been accumulated. In demographic studies, dormant life stages, such as seed banks, and other cryptic factors have often been neglected. The potential consequences of these omissions have been extensively described in the literature. In the first chapter, I analyze patterns of seed bank omissions in demographic models, finding unjustified omissions are widespread …
Understanding The Interactions Between Conservation Agencies And Rangers: A Mixed-Methods Approach, Christina M. Burton
Understanding The Interactions Between Conservation Agencies And Rangers: A Mixed-Methods Approach, Christina M. Burton
Graduate Thesis and Dissertation 2023-2024
Research describing conservation agencies has generally been exploratory and limited in the use of theory. Similarly, organizational theories can provide an understanding for how organizations change and adapt to their given environments, but they have not been applied to conservation agencies with unique challenges and strains from other public bureaucracies or private corporations. In expanding this body of literature, not only were these theories applied conservation agencies, but they were also explored in what Powell and Colyvas (2008, p. 276) called "microfoundations" of organizations, which focuses on the interplay between individuals and organizations. To explore this, a convergent mixed-methods design …
Xps Study Of Calcium Lanthanum Sulfide Ceramics, Brian E. Butkus
Xps Study Of Calcium Lanthanum Sulfide Ceramics, Brian E. Butkus
Graduate Thesis and Dissertation 2023-2024
Long wave infrared (LWIR) optics that transmit in the 8 to 14 m wavelength range and, additionally, can withstand severe physical and thermal stresses are needed for advanced remote sensing, guidance and communication-based applications. However, most non-oxide transparent LWIR optics do not have the wider transmission range, nor the hardness and resistance to thermal shock needed for extreme environments. Because of these limitations, research is circling back to a promising material, calcium lanthanum sulfide (CLS), that could meet LWIR needs for extreme environments.
In this thesis, we will demonstrate the abilities of x-ray photoelectron spectroscopy (XPS) as a technique for …
Clay As A Control Technique For Karenia Brevis: Water Chemistry Dynamics And Physiological Impacts On Benthic Invertebrates, Victoria Devillier
Clay As A Control Technique For Karenia Brevis: Water Chemistry Dynamics And Physiological Impacts On Benthic Invertebrates, Victoria Devillier
Graduate Thesis and Dissertation 2023-2024
Clay-based compounds are globally the most advanced and widely used method of direct suppression of marine harmful algal blooms, and are currently undergoing investigation as an option to control Karenia brevis blooms in Florida. Before clay may be accepted for widespread use, there are multiple concerns and challenges that must be addressed regarding the environmental safety of this method, such as effects on water quality, the fate of toxins, and potential impacts of clay treatment to non-target organisms. To contribute to ongoing assessments of clay as a potential control method for K. brevis blooms, we conducted experiments with a formulation …
Multi-Kilowatt Fiber Laser Amplifiers And Hollow-Core Delivery Fibers, Matthew Cooper
Multi-Kilowatt Fiber Laser Amplifiers And Hollow-Core Delivery Fibers, Matthew Cooper
Graduate Thesis and Dissertation 2023-2024
High-power fiber lasers have emerged as a cornerstone in the realm of laser technology. Characterized by their exceptional efficiency, ruggedness, and versatility, fiber lasers are experiencing widespread use in manufacturing, medical, defense, science, and in long range sensing. Unfortunately, high-power applications require strict spatial and spectral performance characteristics to be maintained, which has yet to be perfected.
This dissertation discusses the power scaling of ytterbium-doped fiber laser amplifiers, presenting three significant advancements. First, a novel photonic lantern-based method is introduced for real-time monitoring of laser beam modal content and beam quality. Initial tests highlight the photonic lantern's efficiency in predicting …
War On The Bay: Determining The Existence Of Watershed Moments Within The Shipyards In Tampa, Florida During World War Ii, Connor E. Farley
War On The Bay: Determining The Existence Of Watershed Moments Within The Shipyards In Tampa, Florida During World War Ii, Connor E. Farley
Graduate Thesis and Dissertation 2023-2024
With the Great Depression on one side and prosperity on the other, historians of World War II have debated its effects on American society and have asked if it represented a watershed moment. While the war clearly disrupted American life and opened new opportunities for many, its role as a transformative event remains contested. This examination of the Tampa shipyards utilizes the theoretical and methodological lenses of social history to facilitate an analysis based on a chronological approach. This analysis centers on the situation in Tampa before, during, and after World War II, and in doing so it assesses the …
Erasing The Past For Marketability: The Effects Of Selling National Myth In Ybor City's Public Historical Narrative, Janine A. Galindo
Erasing The Past For Marketability: The Effects Of Selling National Myth In Ybor City's Public Historical Narrative, Janine A. Galindo
Graduate Thesis and Dissertation 2023-2024
Ybor City is a historical neighborhood in Tampa, Florida, and a tourist attraction known for its immigrant roots and once-thriving cigar industry. This thesis places Ybor City into the context of the burgeoning heritage tourism market, examining how cities financially reliant on tourism often sanitize their public historical narrative. I identify the main actors involved in Ybor City's marketing and preservation by investigating contemporary newspaper articles and multiple National Park Service documents, thereby uncovering the motivations and decisions that led to Ybor's cultural image of a bustling, relatively peaceful early 20th-century "Latin" community. To correlate Ybor's aestheticized public image with …
Student Perceptions Of Campus Crime And Victim Services, Tracy Gulliford
Student Perceptions Of Campus Crime And Victim Services, Tracy Gulliford
Graduate Thesis and Dissertation 2023-2024
Few would argue that college campus crime is a serious problem across the United States. Debate arises, however, regarding why the problem is so pervasive and how best to address it. This dissertation addresses that gap by exploring the nature and magnitude of the college campus crime problem followed by a rationale for studying student perceptions regarding knowledge about and use of victim services resources offered on the University of Central Florida (UCF) campus. Doing so is particularly important in light of the fact that five years have now passed since UCF launched the "Let's Be Clear" campaign designed to …
Low Energy Photon Detection, Tianyi Guo
Low Energy Photon Detection, Tianyi Guo
Graduate Thesis and Dissertation 2023-2024
Detecting long wave infrared (LWIR) light at room temperature has posed a persistent challenge due to the low energy of photons. The pursuit of an affordable, high-performance LWIR camera capable of room temperature detection has spanned several decades. In the realm of contemporary LWIR detectors, they can be broadly classified into two categories: cooled and uncooled detectors. Cooled detectors, such as MCT detectors, excel in terms of high detectivity and fast response times. However, their reliance on cryogenic cooling significantly escalates their cost and restricts their practical applications. In contrast, uncooled detectors, exemplified by microbolometers, are capable of functioning at …
Deep Learning Approaches For Automatic Colorization, Super-Resolution, And Representation Of Volumetric Data, Sudarshan Devkota
Deep Learning Approaches For Automatic Colorization, Super-Resolution, And Representation Of Volumetric Data, Sudarshan Devkota
Graduate Thesis and Dissertation 2023-2024
This dissertation includes a collection of studies that aim to improve the way we represent and visualize volume data. The advancement of medical imaging has revolutionized healthcare, providing crucial anatomical insights for accurate diagnosis and treatment planning. Our first study introduces an innovative technique to enhance the utility of medical images, transitioning from monochromatic scans to vivid 3D representations. It presents a framework for reference-based automatic color transfer, establishing deep semantic correspondences between a colored reference image and grayscale medical scans. This methodology extends to volumetric rendering, eliminating the need for manual intervention in parameter tuning. Next, it delves into …
Painting And Fear: The Creation Of Death's Visage, Mark A. Felbinger
Painting And Fear: The Creation Of Death's Visage, Mark A. Felbinger
Graduate Thesis and Dissertation 2023-2024
Death's Visage is a feature film that was created from an idea developed due to a personal relationship with an artist, who was a professional illustrator and painter. The film follows a young woman who becomes entrapped in a demonic sphere and time zone where her fear is the demon's gratification. She questions the events that are unfolding, which creates herpsychological turmoil, while taking place in the family home that is in an older established middle-class neighborhood.
Death's Visage was a micro-budgeted film produced for $20,778. The capital needed for this film meets the University of Central Florida Feature Film …
A Theoretical Study Of Elementary Processes In Interstellar Plasma, Joshua Forer
A Theoretical Study Of Elementary Processes In Interstellar Plasma, Joshua Forer
Graduate Thesis and Dissertation 2023-2024
Interstellar plasma — interstellar clouds in particular — play an important role in determining the structure and evolution of galaxies. Understanding the time evolution of such plasmas requires knowledge of the chemical processes that drive their dynamics. Two processes are studied in this dissertation: radiative electron attachment (REA) via dipole-bound states (DBSs) and dissociative recombination (DR). Of the several hundred molecules detected in the interstellar medium, only eight anions have been detected: CN-, C3N-, C5N-, C7N-, C4H-, C6H-, C8H-, and C10H-. Their production mechanism is not well known; REA was suggested as a possible formation pathway, but previous theoretical studies …
Site, Sight, Swipe, Prada Marfa: A Case Study In Public Art, Cultural Tourism, And Image-Based Social Media Engagement, Ha'ani Joy Hogan
Site, Sight, Swipe, Prada Marfa: A Case Study In Public Art, Cultural Tourism, And Image-Based Social Media Engagement, Ha'ani Joy Hogan
Graduate Thesis and Dissertation 2023-2024
Through a case study of Prada Marfa, a site-specific public art sculpture located in West Texas, this dissertation examines the connection of public art, cultural tourism, and image-based social media engagement. Little scholarship that combines all three areas of study exists. To fill this gap, this study incorporates five methods of research to determine how one public art sculpture's existence can contribute to its surrounding community by prompting economic activity and influencing the way that community is seen through a public lens. The five methods encompass a historical analysis of news articles about The City of Marfa and Prada …
A Systematic Review Of Cryptocurrencies Use In Cybercrimes, Kieran B D Human
A Systematic Review Of Cryptocurrencies Use In Cybercrimes, Kieran B D Human
Graduate Thesis and Dissertation 2023-2024
Cryptocurrencies are one of the most prominent applications of blockchain systems. While cryptocurrencies promise many features and advantages, such as decentralization, anonymity, and ease of access, those very features can be abused. For instance, as documented in various recent works, cryptocurrencies have been frequently abused in many different forms of cybercrime. Despite the plethora of works on measuring and understanding the abuse of cryptocurrencies in the digital space, there has been no work on systemizing this knowledge by comprehensively understanding those contributions, contrasting them based on their merit, and understanding the gap in this research space.
This thesis initiates the …
Exploring The Feasibility Of Machine Learning Techniques In Recognizing Complex Human Activities, Shengnan Hu
Exploring The Feasibility Of Machine Learning Techniques In Recognizing Complex Human Activities, Shengnan Hu
Graduate Thesis and Dissertation 2023-2024
This dissertation introduces several technical innovations that improve the ability of machine learning models to recognize a wide range of complex human activities. As human sensor data becomes more abundant, the need to develop algorithms for understanding and interpreting complex human actions has become increasingly important. Our research focuses on three key areas: multi-agent activity recognition, multi-person pose estimation, and multimodal fusion.
To tackle the problem of monitoring coordinated team activities from spatio-temporal traces, we introduce a new framework that incorporates field of view data to predict team performance. Our framework uses Spatial Temporal Graph Convolutional Networks (ST-GCN) and recurrent …
Material Appearance Modeling For Physically Based Rendering, Alexis Benamira
Material Appearance Modeling For Physically Based Rendering, Alexis Benamira
Graduate Thesis and Dissertation 2023-2024
Photorealistic rendering focuses on creating images with a computer that imitates pictures of reallife scenes as faithfully as possible. To achieve this, rendering algorithms require incorporating accurate modeling of how light interacts with various types of matter. For most objects, this model needs to account for the scattering of the light rays. However, this model falls short when rendering objects of sizes smaller or comparable to the wavelength of the incident light. In this case, new phenomena such as diffraction or interference are observed and have been characterized in optics. Digital rendering of those phenomena involve different light representations than …
The Study Of Crisis Narratives Over Time: Mayfield, Ky In The Aftermath Of The 2021 Tornadoes, Rebecca Freihaut
The Study Of Crisis Narratives Over Time: Mayfield, Ky In The Aftermath Of The 2021 Tornadoes, Rebecca Freihaut
Graduate Thesis and Dissertation 2023-2024
This study was a year-long longitudinal qualitative research project using the case study of Mayfield, KY after the catastrophic tornado event that impacted their community on December 10, 2021. Oral histories were collected from 18 participants who lived in or were closely connected to Mayfield at the six month and 1.5 year marks after the disaster. Later, after the oral histories were archived and made available to the public, the transcripts were used to extract the crisis narratives from the oral histories and the data was thematically analyzed using the existing theory and theoretical framework of Narratives of Crisis: Telling …
Spatial Ensemble Distillation Learning Based Real-Time Crash Prediction And Management Framework, Md Rakibul Islam
Spatial Ensemble Distillation Learning Based Real-Time Crash Prediction And Management Framework, Md Rakibul Islam
Graduate Thesis and Dissertation 2023-2024
Real-time crash prediction is a complex task, since there is no existing framework to predict crash likelihood, types, and severity together along with a real-time traffic management strategy. Developing such a framework presents various challenges, including not independent and identically distributed data, imbalanced data, large model size, high computational cost, missing data, sensitivity vs. false alarm rate (FAR) trade-offs, estimation of traffic restoration time after crash occurrence, and real-world deployment strategy. A novel spatial ensemble distillation learning modeling technique is proposed to address these challenges. First, large-scale real-time data were used to develop a crash likelihood prediction model. Second, the …
A Generalized Accelerated Failure Time Model To Predict Restoration Time From Power Outages, Tasnuba Binte Jamal
A Generalized Accelerated Failure Time Model To Predict Restoration Time From Power Outages, Tasnuba Binte Jamal
Graduate Thesis and Dissertation 2023-2024
Major disasters such as wildfire, tornado, hurricane, tropical storm, flooding cause disruptions in infrastructure systems such as power outage, disruption to water supply system, wastewater management, telecommunication failures, and transportation facilities. Disruptions in electricity infrastructures have negative impacts on sectors throughout a region, including education, medical services, financial, and recreation sectors. In this study, we introduce a novel approach to investigate the factors which can be associated with longer restoration time of power service after a hurricane. Considering restoration time as the dependent variable and utilizing a comprehensive set of county-level data, we have estimated a Generalized Accelerated Failure Time …
Activist-Casual Game Design: Iterating Serious Games Through Research-Creation, Daniel J. King
Activist-Casual Game Design: Iterating Serious Games Through Research-Creation, Daniel J. King
Graduate Thesis and Dissertation 2023-2024
How can activists and scholars design serious game projects that attract and engage people, that are inviting for many types of players, and that empower players to create positive change? My hypothesis was that the Activist-Casual Game Design Framework I published in 2021 could facilitate this work. I took a design-based research approach to answer my research question by way of demonstration and self-reflection through a creative case study of the production of an activist-casual game called Climate Somnia. Chapter 1 explains the literature review and synthesis behind the creation of the original framework, and Chapter 2 reviews the …
An Exploration Of The Relationships Among Habitual Exercise, Emotion Regulation, And Quality Of Life In College Students With Adhd: A Mixed-Methods Study, Greta Ledoyen
Graduate Thesis and Dissertation 2023-2024
College students with ADHD tend to struggle with their academic performance and are less likely to graduate college than their neurotypical peers. Emotion dysregulation, a common symptom of ADHD, can cause significant functional impairment throughout life. Acute exercise improves ADHD symptom severity, yet medication is the first line of treatment. Less is understood about the effectiveness of habitual exercise or ADHD medication on emotion dysregulation and quality of life (QoL). Therefore, the purpose of this mixed-methods study was to examine the relationship between habitual exercise, emotion regulation, and QoL in college students with ADHD, and the possible moderating effects of …
The Stench Of Miasma And The Fragrance Of Daffodils: Reconstructing Historical Scentscapes In Mesopotamia, Samantha N. Levy
The Stench Of Miasma And The Fragrance Of Daffodils: Reconstructing Historical Scentscapes In Mesopotamia, Samantha N. Levy
Graduate Thesis and Dissertation 2023-2024
My thesis interrogates the role that the sense of smell plays in the experience of place, arguing that scent has been virtually ignored in public history contexts. The thesis will review the foundational scholarship on the history of the senses and relate the findings of interdisciplinary research that demonstrates how the senses alter one's understanding of the environment and even the formation of memories. This work is relevant to the field of public history since smell can be used to captivate the public in a memorable—and potentially more authentic—engagement with the Mesopotamian past. To address gaps in the present scholarship, …
Functionalization Of 1d And 2d Nanostructures And Their Applications, Yuen Yee Li Sip
Functionalization Of 1d And 2d Nanostructures And Their Applications, Yuen Yee Li Sip
Graduate Thesis and Dissertation 2023-2024
Material discovery and development has been playing a significant role in shaping human civilizations, by studying and improving materials for appealing observations to aid in our survival as well as to satisfy our curiosity. From the common earthly materials that give us strong building structures and hunting weapons to the Silicon Age that contributes to the creation of modern electronics and computers, the development of novel and enhanced materials continues to grow. Recently, a new field has emerged that is rapidly expanding the engineering circle; these are called nanomaterials. By shrinking bulk materials into structures with nanoscale dimensions, there is …
Auto-Ignition Characteristics Of Hydrogen Enriched Natural Gas For Gas Turbine Applications, Christopher T. Loving
Auto-Ignition Characteristics Of Hydrogen Enriched Natural Gas For Gas Turbine Applications, Christopher T. Loving
Graduate Thesis and Dissertation 2023-2024
A successful transition to clean energy hinges on meeting the world's growing energy demand while reducing greenhouse gas emissions. Achieving this will require significant growth in electricity generation from clean and carbon-free energy sources. Several energy providers have already begun the transition from traditional carbon-based fuels to cleaner alternatives, such as hydrogen and hydrogen enriched natural gas. However, there are still many technical challenges that must be addressed when applying these fuels in gas turbines. The application of hydrogen or hydrogen/natural gas blends to advanced class gas turbines, which have higher operating pressures and temperatures has raised concerns about the …
Optical Characterization Of Liquids: Refractive Index And Raman Gain Coefficient Measurements, Cesar A. Lopez-Zelaya
Optical Characterization Of Liquids: Refractive Index And Raman Gain Coefficient Measurements, Cesar A. Lopez-Zelaya
Graduate Thesis and Dissertation 2023-2024
Novel technologies capable of generating wavelengths not accessible with typical laser gain media have been among the primary drivers of the field of nonlinear optics. Here, we are interested in the linear and nonlinear properties of liquids beyond the visible spectrum, motivated in part by their use as core materials in optical fibers. Given their dispersion, nonlinearities, transparency, and ability to be mixed, liquids show potential for exploiting in-fiber nonlinear phenomena for developing the new generation of low cost, size, weight, and power wavelength-agile fiber-laser sources. For the design, modeling, and experimental realization of these liquid-core fiber laser sources, proper …
The Viking Age As A Themed Experience: Representing Hitorical Narrative Through Research Based Design, Edward D. Macpherson
The Viking Age As A Themed Experience: Representing Hitorical Narrative Through Research Based Design, Edward D. Macpherson
Graduate Thesis and Dissertation 2023-2024
I intend to design an interactive educational experience that teaches guests about the culture, society, and beliefs of Scandinavian peoples during the Viking age. The concepts are illustrated through a dynamic narrative designed to be experienced through exploration of a themed environment. Immersion into the narrative is intended to instill a sense of active participation with the culture itself. This interaction is intended to inspire guests to further investigate the culture and history outside the limits of the experience. These qualities, unique to an immersive environmental themed experience, capture the lasting attention of an audience such as other mediums may …
Laser Powder Bed Fusion Of Bimetallic Structures, Asif Mahmud
Laser Powder Bed Fusion Of Bimetallic Structures, Asif Mahmud
Graduate Thesis and Dissertation 2023-2024
Laser powder bed fusion (LPBF) is a popular additive manufacturing (AM) technique that has demonstrated the capability to produce sophisticated engineering components. This work reports the crack-free fabrication of an SS316L/IN718 bimetallic structure via LPBF, along with compositional redistribution, phase transformations and microstructural development, and nanohardness variations. Constituent intermixing after LPBF was quantitatively estimated using thermo-kinetic coefficients of mass transport and compared with the diffusivity of Ni in the austenitic Fe-Ni system. The intermixing of primary solvents (Ni and Fe) in SS316L/IN718 bimetallic structures was observed for an intermixing zone of approximately 800 µm, and their intermixing coefficient was estimated …