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Differential Workload Levels For Primary And Secondary Tasks Using Virtual Reality, Ritesh Chandrasekaran Jan 2022

Differential Workload Levels For Primary And Secondary Tasks Using Virtual Reality, Ritesh Chandrasekaran

Honors Undergraduate Theses

Virtual reality (VR) has modernized the way that training has been done across multiple domains. Combining the benefits of using VR with the ability to measure workload levels from eye tracking data is a promising area of opportunity for all disciplines and jobs that require hands-on training. With VR becoming of increasing interest for optimizing training simulations and protocols for work around the world, this study aims to determine differential workload levels in virtual reality by using objective performance data in a simulation and subjectively assessing workload through the NASA-TLX survey. For this study, a 3x1 repeated measures ANOVA was …

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Elaboration, Resolution, And Coping In The Covid-19 Narratives Of College Students: Relations To Identity Development, Maha Y. Halabi Jan 2022

Elaboration, Resolution, And Coping In The Covid-19 Narratives Of College Students: Relations To Identity Development, Maha Y. Halabi

Honors Undergraduate Theses

Previous research has shown that talking about highly significant experiences in more elaborative ways and with greater meaning-making is related to better identity development in emerging adults (McLean & Pratt, 2006). Expressing personally significant experiences through narratives allows individuals to construct coherent autobiographical stories about the self, connecting their past, present, and future selves into a coherent whole, which ultimately contributes to healthy identity development (Pennebaker & Seagal, 1999). In this research, we examined the Covid-19 narratives of college students in relation to identity development. Data was collected from 218 emerging adult college students, ages 18 and above, both males …

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Investigation Of Dna Hybridization In Localized Systems In Close Proximity, Ashley M. Sewsankar Jan 2022

Investigation Of Dna Hybridization In Localized Systems In Close Proximity, Ashley M. Sewsankar

Honors Undergraduate Theses

Hybridization of two or more DNA or RNA strands is well documented for the process taking place with all strands free in solution or when one strand is immobilized on a substrate. This study contributes to the investigation of the hybridization process when two single DNA strands (ssDNA) are in close proximity. We took advantage of an X sensor in which hybridization of four DNA strands enables the formation of a DNA four-way junction (crossover or X) structure. We immobilized multiple layers of crossover structures to study its hybridization being triggered by short ssDNA coming from solution and further investigate …

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Instanton Counting, Matrix Models, And Characters, Spencer Tamagni Jan 2022

Instanton Counting, Matrix Models, And Characters, Spencer Tamagni

Honors Undergraduate Theses

In this thesis we study symmetries of quantum field theory visible only at the non-perturbative level, which arise from large deformations of the integration contour in the path integral. We exposit the recently-developed theory of qq-characters that organizes such symmetries in the case of N = 2 supersymmetric gauge theories in four dimensions. We sketch the physical origin of such observables from intersecting branes in string theory, and the mathematical origin as certain
equivariant integrals over Nakajima quiver varieties. We explain some of the main applications, including the derivation of Seiberg-Witten geometry for quiver gauge theories and the relations to …

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Investigation Of Pitching And Plunging Motions On A Tandem Wing Configuration, Riley M. Capiro Jan 2022

Investigation Of Pitching And Plunging Motions On A Tandem Wing Configuration, Riley M. Capiro

Honors Undergraduate Theses

From the beginning of the history of flight, inspiration has been drawn from nature. Evolution has spent millions of years optimizing creatures that rely on flight as their means of locomotion. Today, aerial vehicles are very different to those from the time of the Wright brothers. One kind of vehicle that stands to benefit in mimicking nature is the drone, particularly smaller drones. Commonly used today by militaries, industry and civilians, drones are increasingly affordable while also decreasing in size thanks to advancements in electronics and manufacturing methods. The purpose of this thesis is to investigate how pitching and rolling …

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Mental Health Of Puerto Ricans Who Stayed In Puerto Rico Compared To Those Who Migrated To Florida After Hurricane Maria, Sophia Chapdelaine Jan 2022

Mental Health Of Puerto Ricans Who Stayed In Puerto Rico Compared To Those Who Migrated To Florida After Hurricane Maria, Sophia Chapdelaine

Honors Undergraduate Theses

September 20th, 2017 was a devastating day for many Puerto Ricans as Hurricane Maria made landfall in Puerto Rico. A majority of people were left without electricity, water, transportation, and communication between friends and family. In addition, many experienced losses such as destruction of their home and personal belongings as well as the death of family members and friends. This resulted in a decline in mental health. According to previous literature, key indicators of poor mental health in Puerto Rico after Hurricane Maria were increased diagnoses of depression, anxiety, and Post Traumatic Stress Disorder (PTSD). This study provides a comprehensive …

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Genetic Algorighm Representation Selection Impact On Binary Classification Problems, Stephen V. Maldonado Jan 2022

Genetic Algorighm Representation Selection Impact On Binary Classification Problems, Stephen V. Maldonado

Honors Undergraduate Theses

In this thesis, we explore the impact of problem representation on the ability for the genetic algorithms (GA) to evolve a binary prediction model to predict whether a physical therapist is paid above or below the median amount from Medicare. We explore three different problem representations, the vector GA (VGA), the binary GA (BGA), and the proportional GA (PGA). We find that all three representations can produce models with high accuracy and low loss that are better than Scikit-Learn’s logistic regression model and that all three representations select the same features; however, the PGA representation tends to create lower weights …

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The Mediating Effect Of Surface Acting On Mistreatment-Exhaustion And Mistreatment-Sabotage Relationships, Jiani Fan Jan 2022

The Mediating Effect Of Surface Acting On Mistreatment-Exhaustion And Mistreatment-Sabotage Relationships, Jiani Fan

Honors Undergraduate Theses

Although ample research has been conducted to explore employee emotional labor and customer incivility at the workplace, there is limited literature examining the role of surface acting in the stressor-strain relationships associated with customer incivility. The current study focuses on the mediating effect of surface acting between customer mistreatment-emotional exhaustion and customer mistreatment-service sabotage relationships. Based on several theoretical models regarding mental and emotional resources, including the Conservation of Resources Theory and Ego Depletion Theory, it is hypothesized that a significant mediating effect of surface acting can be identified in the customer mistreatment-emotional exhaustion and customer mistreatment-service sabotage relationships. A …

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Seasonality And Lanscape Management In The Bolivian Amazon: Landsat Imagery Analysis Of The Quinato Wetland, Jackie Beery Jan 2022

Seasonality And Lanscape Management In The Bolivian Amazon: Landsat Imagery Analysis Of The Quinato Wetland, Jackie Beery

Honors Undergraduate Theses

The Quinato wetland, a remnant of a Pleistocene river course through northeastern Bolivia, has undoubtedly been the site of human landscape modification and domestication by pre-Columbian peoples. A 2021 study suggests that these modification practices, which have been tied to seasonal adaptation, were quite different between areas of the wetland. In response to these findings, the present study uses unsupervised classifications from the 50-year span of existent Landsat satellite imagery data, dating from 1972 to 2022, to create a chronological profile of the wetland. This record allows for the assessment of how yearly, seasonal changes to wetland growth and shrinkage …

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Atomization Of A Liquid Water Jet In Crossflow At Varying Hot Temperatures For High-Speed Engine And Stratospheric Aerosol Injection Applications, Luke Caetano Jan 2022

Atomization Of A Liquid Water Jet In Crossflow At Varying Hot Temperatures For High-Speed Engine And Stratospheric Aerosol Injection Applications, Luke Caetano

Honors Undergraduate Theses

This paper aims to study how varying crossflow burning temperatures from 1100 C to 1800 C affect the liquid droplet breakup, size distribution, and atomization of a liquid water jet injected into a vitiated crossflow. The LJIC injection mechanism was implemented using the high-pressure axially staged combustion facility at the University of Central Florida. The measurement devices used to gather particle data from the exhaust plume were the TSI Aerodynamic Particle Sizer (APS), which measures particles between 0.523 µm and 20 µm, and the Sensirion SPS30 (SPS30), which measures particles between 0.3 µm and 10 µm. Both measurement devices were …

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Shock Tube And Gas Dynamic Design Considerations And Implementation For Extended Test Times, Jacklyn Higgs Jan 2022

Shock Tube And Gas Dynamic Design Considerations And Implementation For Extended Test Times, Jacklyn Higgs

Electronic Theses and Dissertations, 2020-2023

A new shock tube test section has been designed and manufactured for the purpose of increasing the test time and expanding the applications of the shock tube for a multitude of ongoing and future projects. One purpose for the test section extension is to allow for flow visualization of droplets impacted by a shock wave for the interaction of hypersonic vehicles and atmospheric disturbances. Another purpose is to measure behind the incident shock to capture the chemical kinetics for a high-altitude environment and low-pressure, high-temperature space applications. This new test section contains 24 round optical ports for laser spectroscopy for …

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The Element Of Cognates And Its Impact On Second Language Learners, Azimeh Kazemian Jan 2022

The Element Of Cognates And Its Impact On Second Language Learners, Azimeh Kazemian

Electronic Theses and Dissertations, 2020-2023

There are different factors associated with learning a second language such as English. Among the factors including motivation and socioeconomic is the element of cognates that may impact second language acquisition. Through exploring multiple studies, this secondary research paper aims to examine the impact of cognates on language acquisition among different participants with different language backgrounds. Through different research methodologies, the findings of each published study revealed that students whose mother tongues do share cognates with their second language have an advantage over speakers of languages that do not share cognates with a second language such as English. On the …

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When Doubt Comes In: Framing Of Sexual Trauma Experiences In R/Sexualassault, Alison Kubala Jan 2022

When Doubt Comes In: Framing Of Sexual Trauma Experiences In R/Sexualassault, Alison Kubala

Electronic Theses and Dissertations, 2020-2023

At age 23 I began acknowledging and healing from my experiences with sexual trauma. Although my trauma occurred from ages twelve to eighteen, my doubt and preconceived notions about what abuse was kept me from believing that I deserved help. Due to an incessant belief that abuse looked one particular way, I found ways to minimize and frame my experiences as "not abuse". Fueled by encouragement from my therapist and my interest in Communication research, I began to wonder how others who experience shame and doubt surrounding sexual abuse frame their experiences. To better understand, I conducted a critical discourse …

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Reporter Chondrocyte Optimization Of Bioinks For Zonal 3d Bioprinting Of Cartilage, Kari Martyniak Jan 2022

Reporter Chondrocyte Optimization Of Bioinks For Zonal 3d Bioprinting Of Cartilage, Kari Martyniak

Electronic Theses and Dissertations, 2020-2023

Osteoarthritis (OA) is the most common form of arthritis, often thought of as a disease of the elderly, but post traumatic OA predominantly impacts younger individuals. Articular cartilage is the tissue that coats the end of your bones in synovial joints. Since cartilage has limited healing capacity, defects, or injuries to it progressively erodes down to the subchondral bone. Unfortunately, current treatment options all have limitations, particularly for younger patients. Cartilage has a specific zonal architecture that is distinguished by the different cell morphologies and arrangements, biochemical composition, and mechanical properties. 3D bioprinting is a tissue engineering technique that involves …

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Prediction And Validation Of Residual Stresses In Additively Manufactured Metal Parts, Jose Mayi Rivas Jan 2022

Prediction And Validation Of Residual Stresses In Additively Manufactured Metal Parts, Jose Mayi Rivas

Electronic Theses and Dissertations, 2020-2023

Selective Laser Melted (SLM) Additively Manufactured (AM) metal parts are of special interest to many industries because their designs can be made arbitrarily complex while still maintaining bulk type mechanical properties. However, the large thermal gradients inherent to the SLM process generate residual stresses (RS) and distortions that are detrimental to the fit, functionality and integrity of parts. Predicting the state of stresses in as-built 3D printed parts is a difficult problem that currently has only been approached with the use of transient thermomechanical Finite Element Models (FEMs). The nonlinearities associated with AM processes are difficult to capture in these …

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The Impact Of A Growth Mindset Intervention On Growth Mindset, Self-Efficacy, & Learning Behaviors Of Adult Esol Learners At A Technical College, Wei-Chun Stiskin Jan 2022

The Impact Of A Growth Mindset Intervention On Growth Mindset, Self-Efficacy, & Learning Behaviors Of Adult Esol Learners At A Technical College, Wei-Chun Stiskin

Electronic Theses and Dissertations, 2020-2023

The purpose of this mixed study was to determine the impact of a growth mindset intervention on adult ESOL learners' growth mindset, self-efficacy, and learning behaviors at a technical college. This study adopted paired samples t test to analyze quantitative component part of the study, including pre and post Growth Mindset Surveys and Self-Efficacy Surveys. For the qualitative component of the study, participants' interview responses were recorded and analyzed to explore their perspectives on the quantitative part of the study. Quantitatively, the findings of the study showed that there was no significant difference between growth mindset intervention and adult ESOL …

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Examining The Relationship Between Six Sigma Failures And The Utilization Of Cost Engineering Approaches, Dennis Tribby Jan 2022

Examining The Relationship Between Six Sigma Failures And The Utilization Of Cost Engineering Approaches, Dennis Tribby

Electronic Theses and Dissertations, 2020-2023

The purpose of the quantitative non-experimental research study is to analyze the relationship between the impact of using cost engineering approaches and the success rate of Six Sigma projects in the manufacturing industry. This study focuses on the relationship between Six Sigma project failures and whether skilled cost engineering professionals, methods or a cost management system was used to ensure that accurate cost data was utilized during the design project's lifecycle. Many companies using Six Sigma and related methodologies for product design have implemented with great success yet there are studies indicating that only 13% of firms reported achieving their …

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Testing The Influence Of Water Depth In Design Of Created Oyster Reef For Living Shoreline Applications, Peter Vien Jan 2022

Testing The Influence Of Water Depth In Design Of Created Oyster Reef For Living Shoreline Applications, Peter Vien

Electronic Theses and Dissertations, 2020-2023

Living shoreline stabilization has become a popular practice in shoreline restoration and bank protection; however, there are still many uncertainties regarding effective site design using living materials. For example, natural wave-breaks may be formed of created reefs, but the optimum water depth for hydrodynamic influence may differ from the preferred depth to ensure organism recruitment. The objective of this research is to understand how water depth relative to the crest of submerged artificial oyster reef structures influences nearshore hydrodynamic processes and sediment transport or retention in nearshore areas. A field study, sited in a microtidal estuary on the Atlantic coast …

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Studying The Electrostatic Effects On The Dynamics Of Charged Lunar Dust Via Discrete Element Method, Hao Wang Jan 2022

Studying The Electrostatic Effects On The Dynamics Of Charged Lunar Dust Via Discrete Element Method, Hao Wang

Electronic Theses and Dissertations, 2020-2023

Dust problems raise significant concerns in planetary surface exploration. The unusual behavior of the dust particles that surround the vehicle after engine cutoff has the potential to have more of an influence on surface systems than the high velocity lunar rocket plume ejecta in the landing process. A prevailing hypothesis attributes the levitation and transport of dust particles on the surface of airless bodies to the electrostatic effects and electric field. However, there is no accurate model considering the inter-particle electrostatic interactions, especially when the particles are charged by plume. This dissertation aims to understand the behavior of charged lunar …

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Application Of Biologically Activate Carbon For Treatment Of Sulfide-Laden Groundwater, Jessica Cormier Jan 2022

Application Of Biologically Activate Carbon For Treatment Of Sulfide-Laden Groundwater, Jessica Cormier

Electronic Theses and Dissertations, 2020-2023

Small-system water purveyors must overcome many challenges to provide an adequate and safe water supply to its consuming public. This dissertation reports on research related to the application of biologically activated carbon (BAC) media filters for the treatment of well water to remove disinfection by-product (DBP) precursor matter, measured as dissolved organic carbon (DOC), at two treatment plants serving a small community water system. Four research questions were investigated individually in discrete, yet interconnected studies at two water treatment facilities processing groundwater that contained hydrogen-sulfide (~1.2 mg/L) and dissolved organic carbon (~2.0 mg/L). The first study revealed that BAC filters …

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Compact Lens Technologies: Curved Image Sensor And Volumetric Imaging Efficiency, Zhao Ma Jan 2022

Compact Lens Technologies: Curved Image Sensor And Volumetric Imaging Efficiency, Zhao Ma

Electronic Theses and Dissertations, 2020-2023

Compact image systems bring up people's attention in the field of target recognition, surveillance, situation awareness or even photography. Conventional metrics assess image system based on image quality without considering systems' volume. More comprehensive metrics, such as General Image-Quality Equation and the Targeting Task Performance metric, incorporates all image system components from object, lenses to detector and even imaging processing algorithm. All these key factors prohibit these metrics from being applied to image system in a convenient manner. Here, we propose a simple metric, volumetric imaging efficiency, considering both image quality and volume. Only concentrate on optical lenses enables the …

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Automated Vehicle To Vehicle Conflict Analysis At Signalized Intersections By Camera And Lidar Sensor Fusion, Alabi Mehzabin Anisha Jan 2022

Automated Vehicle To Vehicle Conflict Analysis At Signalized Intersections By Camera And Lidar Sensor Fusion, Alabi Mehzabin Anisha

Electronic Theses and Dissertations, 2020-2023

This research presents an approach for safety diagnosis using sensor fusion techniques. This work fuses the outputs of a roadside low-resolution camera and a solid-state LiDAR. For vehicle classification and detection in videos, the YOLO v5 object detection model was utilized. The raw 3D point clouds generated by the LiDAR are processed by two manual steps - ground plane transformation and background segmentation, and two real-time steps - foreground clustering, and bounding box fitting. Taking the generated 2D bounding boxes of both camera and LiDAR, we associate the common bounding box pairs by thresholding on the Euclidean distance threshold of …

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Humans In Algorithms, Algorithms In Humans: Understanding Cooperation And Creating Social Ai With Causal Generative Models, Lux Miranda Jan 2022

Humans In Algorithms, Algorithms In Humans: Understanding Cooperation And Creating Social Ai With Causal Generative Models, Lux Miranda

Electronic Theses and Dissertations, 2020-2023

Cooperation is the hallmark human trait which has allowed us to congregate into the vast, continent-sprawling societies we live in today. Yet, the precise social, environmental, and cognitive mechanisms which enable this cooperation are not fully understood. Toward this, lucrative insights have been borne through the use of formal computational models of socio-cognitive phenomena: In simulating our own cooperative behavior, we can better deduce the exact factors which cause it. The combined knowledge of these factors and ability to computationally simulate them allows us to further two goals: First, it empowers us with the knowledge of how to modify our …

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Energy And Area Efficient Machine Learning Architectures Using Spin-Based Neurons, Hossein Pourmeidani Jan 2022

Energy And Area Efficient Machine Learning Architectures Using Spin-Based Neurons, Hossein Pourmeidani

Electronic Theses and Dissertations, 2020-2023

Recently, spintronic devices with low energy barrier nanomagnets such as spin orbit torque-Magnetic Tunnel Junctions (SOT-MTJs) and embedded magnetoresistive random access memory (MRAM) devices are being leveraged as a natural building block to provide probabilistic sigmoidal activation functions for RBMs. In this dissertation research, we use the Probabilistic Inference Network Simulator (PIN-Sim) to realize a circuit-level implementation of deep belief networks (DBNs) using memristive crossbars as weighted connections and embedded MRAM-based neurons as activation functions. Herein, a probabilistic interpolation recoder (PIR) circuit is developed for DBNs with probabilistic spin logic (p-bit)-based neurons to interpolate the probabilistic output of the neurons …

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Engagement In Online Math Courses: An Exploration Into Success Rates Of Professors Who Use Engagement Tools In Online Learning, Shauna Rogan Jan 2022

Engagement In Online Math Courses: An Exploration Into Success Rates Of Professors Who Use Engagement Tools In Online Learning, Shauna Rogan

Electronic Theses and Dissertations, 2020-2023

As more college courses transition to hybrid and fully online models due to Covid-19, the classroom environment for higher education has changed and will continue to do so (Bonk, 2020). As online learning continues to grow, a challenge of not connecting with the instructor can be a concern. Success in the online classroom is possible for students who may feel they are alone in online learning (Holbeck & Hartman, 2018). With the right combination of engagement tools, student interaction with the curriculum, class, and professor result in a meaningful learning experience (Holbeck & Hartman, 2018). The history of online education, …

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Exploring The Connection Between Feedback Options And Processing Patterns Of L2 Writers: A Focus On Dynamic Written Corrective Feedback, Christina Torres Jan 2022

Exploring The Connection Between Feedback Options And Processing Patterns Of L2 Writers: A Focus On Dynamic Written Corrective Feedback, Christina Torres

Electronic Theses and Dissertations, 2020-2023

This qualitatively analyzed protocol-analysis study investigated the cognitive processes English for Academic Purposes (EAP) students used while applying Dynamic Written Corrective Feedback (Evans et al., 2010) throughout a 16-week semester. The goal was to extend research literature on DWCF by investigating participant's cognitive processes to deepen understanding of DWCF and compare patterns of processing feedback between color and traditional editing codes. Eleven international university students participated in four think-aloud sessions with DWCF at three-week intervals. Five participants received typical editing codes feedback. Six others received color codes feedback. In each session, participants wrote independently following a prompt for 10 minutes. …

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Generative Adversarial Networks For Extrapolation Of Corrosion In Automobile Images, Andre Von Zuben Jan 2022

Generative Adversarial Networks For Extrapolation Of Corrosion In Automobile Images, Andre Von Zuben

Electronic Theses and Dissertations, 2020-2023

Deep learning has shown success in several applications involving pattern recognition, expert systems, and scientific discovery. However, existing methods struggle with industrial applications, which are often challenged by non-ideal datasets. In many cases, the datasets are small, poorly labeled, noisy, or have unbalanced class distribution or any combination of such problems. In this Master's research, we propose a generative adversarial network (GAN) strategy that is able to circumvent limitations imposed by tiny datasets. As a case study, we use the extrapolation of corrosion in automobiles and feed our deep learning framework with only a few dozen images instead of the …

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Supporting Secondary Teachers' Proof And Justification Of Calculus Concepts Through The Intentional Use Of Dynamic Technology, Shahabeddin Abbaspour Tazehkand Jan 2022

Supporting Secondary Teachers' Proof And Justification Of Calculus Concepts Through The Intentional Use Of Dynamic Technology, Shahabeddin Abbaspour Tazehkand

Electronic Theses and Dissertations, 2020-2023

Learning calculus concepts plays a huge role in understanding phenomena in STEM-related disciplines. Those concepts tend to be dynamic in nature, and the visual exploration and representation of calculus concepts using paper and pencil is limited compared to pedagogically and intentionally using dynamic geometry software. As such, a primary component of this dissertation study involves the integration of dynamic technology. Additionally, previous studies have shown that students have difficulties constructing proofs related to calculus concepts. Despite the existing body of research on students' comprehension of proof and justification, there has not been much focus on teachers' knowledge and perception of …

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Simulation Of A Comprehensive Heat Recovery Steam Generator, Jose Chalarca Castro Jan 2022

Simulation Of A Comprehensive Heat Recovery Steam Generator, Jose Chalarca Castro

Electronic Theses and Dissertations, 2020-2023

With the increasing prevalence of renewables, it is important to optimize combined cycle power plants during transient conditions to better compliment the variable generation of renewable energy generators. There is a demand for dynamic heat recovery steam generators (HRSG) models that may enable improved control designs. Sufficiently accurate real-time simulations of HRSGs may serve as soft sensors and state estimators during transient conditions. Furthermore, real-time simulations of HRSGs can be used for operator training which does not incur the inherit risk of using plant hardware. The focus of this research is on the development towards an integrated dynamic closed loop …

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Characterizing The Effects Of Porosity And Particle Size On Tir Emissivity Spectral Features Of Olivine, Ryan Galinkin Jan 2022

Characterizing The Effects Of Porosity And Particle Size On Tir Emissivity Spectral Features Of Olivine, Ryan Galinkin

Electronic Theses and Dissertations, 2020-2023

We generated a series of 15 particulate San Carlos olivine samples with varying porosity and particle size. We created five different particle size distributions and each particle size distribution was prepared with three different packing techniques. These samples were then imaged under a microscope and a binarization thresholding technique was used to determine each sample's surface porosity by the ratio of dark, void pixels to the total number of pixels in each image. Our results show that we could estimate surface porosity from the analysis of a microscopic image, a non-destructive technique. These samples were then placed in the Planetary …

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