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Evaluation And Modeling Of Power System Components, Zachary Ryan Bailey May 2022

Evaluation And Modeling Of Power System Components, Zachary Ryan Bailey

Electrical Engineering Dissertations - Archive

Future power system architectures will rely on a combination of rotating machines, power electronic devices, and energy storage. While it is possible to procure each component separately and conduct studies incorporating these devices into a system, increases in computing power and advanced computer modeling software have expanded the opportunity for research to be conducted on power system architectures without the need for actual hardware. This provides flexibility by allowing the user to design models of individual components that can then be integrated together or effortlessly interchanged depending on the function or testbed design that is being studied. The UTA IDEAL …

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Robust Noise-Based Attacks Against Audio Event Detection Systems, Rodrigo Augusto Silva Dos Santos May 2022

Robust Noise-Based Attacks Against Audio Event Detection Systems, Rodrigo Augusto Silva Dos Santos

Computer Science and Engineering Dissertations - Archive

The massive advances on the field of deep neural networks in the 2000 and 2010 decades led to an overwhelming adoption of these algorithms on all sorts of domains and applications. Under this widespread adoption scenario, it is natural that these neural networks have also been employed on safety-related use cases, bringing substantial improvements to the performance of existing as well as novel systems. Examples of these safety-inclined applications include scene recognition, object detection and tracking, speech recognition, audio event detection and classification, just to cite a few ones. Unfortunately, these neural network algorithms have been shown to be vulnerable …

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Designing Large-Scale Key-Value Systems On High-Speed Storage Devices, Xingsheng Zhao May 2022

Designing Large-Scale Key-Value Systems On High-Speed Storage Devices, Xingsheng Zhao

Computer Science and Engineering Dissertations - Archive

With the evolution of new technologies, such as edge computing, full self-driving, virtual reality, and multi-media streaming, the volume of data is growing at an accelerated speed. The global data volume could achieve 175~zettabytes by 2025. With this huge amount of data, the focus of data management has been shifted from traditional SQL databases to NoSQL databases, which provide higher performance and better scalability. Key-value (KV) stores are a common type of NoSQL database and are becoming a major storage infrastructure in various application domains. With the development of high-speed storage devices, such as NVMe SSD, Open-channel SSD, and non-volatile …

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Efficient Algorithms And Human-In-The-Loop Approaches For Attribute Design And Selection, Md Abdus Salam May 2022

Efficient Algorithms And Human-In-The-Loop Approaches For Attribute Design And Selection, Md Abdus Salam

Computer Science and Engineering Dissertations - Archive

Feature engineering and feature selection are two important aspects of data science pipeline. Due to the advancement of data collection techniques in recent years, huge amount of data is becoming available in different industries. Consequently, the importance of data science is increasing for business analytic purpose. Different tools and techniques are being developed to assist data scientists to complete their tasks efficiently. One of the main human involvements in the data science task is for feature engineering and selection. These pre-processing steps will prepare the data in the format desired to be fed into various machine learning algorithms to accomplish …

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Working For Peanuts: Labor, Geography, And Class Composition In The American Circus Industry, 1872-1938, William James Hansard May 2022

Working For Peanuts: Labor, Geography, And Class Composition In The American Circus Industry, 1872-1938, William James Hansard

History Dissertations - Archive

This dissertation focuses on class composition in the traveling circus in the Gilded Age (1870s-1900s), the Progressive Era (1890s-1910s), and the New Era (1920s-1930s). American circuses became industrial operations beginning in the 1870s under the leadership of P.T. Barnum and his business partners, and within a few years, they had become the most important form of entertainment in the United States. By the turn of the twentieth century, the major industrial circuses employed around 1,200 people each and traveled the country in what amounted to a mobile factory town. However, up to this point, collective action by circus workers was …

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Mechanistic Basis For The Role Of Resistance And Tolerance Determinants In Antibiotic Treatment Failure, Misha Iqbal Kazi May 2022

Mechanistic Basis For The Role Of Resistance And Tolerance Determinants In Antibiotic Treatment Failure, Misha Iqbal Kazi

Biology Dissertations - Archive

Failure of antibiotics in treatment of nosocomial Gram-negative bacterial infections has created a substantial burden for global public health. The β-lactam class of antibiotics includes last resort carbapenems, which are used to combat multidrug resistant Gram-negative bacterial infections. Production of β-lactamase enzymes that degrade these antibiotics is the primary mechanism β-lactam resistance in Gram-negative bacteria. While FDA-approved serine-β-lactamase inhibitors are co-formulated with β-lactam antibiotics to prevent their inactivation during treatment, no metallo-β-lactamase inhibitors have been approved for clinical use. The first study employs an innovative antimicrobial discovery platform to identify peptide inhibitors against the New Delhi metallo-β-lactamase-1 (NDM-1), which is …

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Pif Transposable Elements Domestication And Genetic Novelty In Insects, Fatema Ruma May 2022

Pif Transposable Elements Domestication And Genetic Novelty In Insects, Fatema Ruma

Biology Dissertations - Archive

Transposable elements or TEs, are selfish genetic elements that represent a major component of a eukaryotic genome. They are genetic units that can move and amplify within a host genome. Mobilization of these TEs can be harmful to the host genome as they can transpose to new locations and can be a source of disruptions to the genetic information, DNA breakage and ectopic recombination. It has been shown, however, that TE proteins can be domesticated/co-opted and supply functions for major adaptations. There are two broad classes of TEs: Class I or retro-transposable elements and Class II or DNA elements. It …

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Optimizing The Performance Of Analytical Chemistry Instrumentation, Srividya Sekar May 2022

Optimizing The Performance Of Analytical Chemistry Instrumentation, Srividya Sekar

Industrial, Manufacturing, and Systems Engineering Dissertations - Archive

Surrogate Optimization and Global Optimization approaches to optimize underlying functions have been studied and used extensively in the field of Operations Research. However, there are very few instances where these approaches have been applied and tested in applications with uncertainty. Additionally, extensive focus and effort have been put into developing highly complex metamodels rather than globally optimizing these metamodels. In this study, we propose a Mixed Integer Quadratically Constrained Program (MIQCP) based approach that globally optimizes a Quintic Multivariate Adaptive Regression Splines (QMARS) metamodel. The QMARS-MIQCP based optimization is applied to a global optimization framework called QMARS-MIQCP-OPT to optimize several …

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Uncertain Times In An Already Uncertain Context: Foster Parenting Stress & Resilience During Covid-19, Erin M. Findley May 2022

Uncertain Times In An Already Uncertain Context: Foster Parenting Stress & Resilience During Covid-19, Erin M. Findley

Social Work Dissertations - Archive

This three-article, mixed-methods dissertation looked at the nature of U.S. foster parent stress and resilience both before and during the COVID-19 pandemic. The first article employed a Qualitative Interpretive Meta-Synthesis (QIMS) approach to answer the question, “What do foster parents tell us about their greatest points of stress in the foster care system?” Foster parent voices (n=572) from twenty-one existing qualitative articles were analyzed until themes emerged. The second article aimed to fill a gap in the literature with a deeper understanding of foster parents’ lived experiences during the COVID-19 pandemic. Semi-structured interviews were conducted with n=20 foster parents across …

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A Necessary And Sufficient Condition For The Asymptotic Normality Of The Quantile Estimator In The Deconvolution Problem, Jeremy R. Valdez May 2022

A Necessary And Sufficient Condition For The Asymptotic Normality Of The Quantile Estimator In The Deconvolution Problem, Jeremy R. Valdez

Mathematics Dissertations - Archive

In this study, we examine the estimation of a quantile function when we have n observations coming from the convolution model contaminated by additive measurement errors. Under certain assumptions, a kernel type deconvolution quantile estimator of the unknown quantile function is proposed. Moreover, we discuss the necessary and sufficient condition on the bandwidth in order to investigate the limiting distribution of the deconvolution kernel quantile estimator when the error terms follow either an ordinary smooth or super smooth distribution. A bootstrap approach is used to select the optimal bandwidth to construct approximate distribution free confidence bands for the quantile function …

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Twisting Systems And Some Quantum P³S With Point Scheme A Rank-2 Quadric, Hung Viet Tran May 2022

Twisting Systems And Some Quantum P³S With Point Scheme A Rank-2 Quadric, Hung Viet Tran

Mathematics Dissertations - Archive

In 1996, J. J. Zhang introduced the concept of twisting a graded algebra by a twisting system, which generalizes the concept of twisting a graded algebra by an automorphism (the latter concept having been introduced in an article by M. Artin, J. Tate and M. Van den Bergh in 1991). Twisting using a twisting system is an equivalence relation and certain important algebraic properties of the original algebra are carried over to the twisted algebra. We call a twisting system nontrivial if it is not given by an automorphism. However, there are very few known examples of nontrivial twisting systems …

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Exponential Tensor Modules, Khoa Hoang Nguyen May 2022

Exponential Tensor Modules, Khoa Hoang Nguyen

Mathematics Dissertations - Archive

Representation theory of Lie algebra of a finite dimensional reductive Lie algebra g is a long-standing problem. The ultimate goal is to classify all representations of g. However. the only case only case when a complete classification is obtained is the case of g = sl(2). Hence, it is natural to study certain categories of representations of g for which some finiteness conditions on the action of certain elements of g is enforced. In this thesis, we introduce a class of representations T (g, V, S) of sl(n + 1) of mixed tensor type. By varying the polynomial g, the …

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Pipeline To Power: A Creative Exploration Of My Journey To Black Youth Empowerment, Junichi Uehara Lockett May 2022

Pipeline To Power: A Creative Exploration Of My Journey To Black Youth Empowerment, Junichi Uehara Lockett

Educational Leadership & Policy Studies Dissertations - Archive

Through an arts-based autoethnography, I explored the influences and experiences that informed my approach to leading Black youth empowerment programming. Although there is a significant amount of scholarship on Black youth empowerment programming and its importance to Black children, there is limited literature on how one becomes a Black youth empowerment facilitator in the community. I sought to answer the following questions: (1) How did external forces and people inform my approach to leading Black youth empowerment programming? (2) How did my inner drive and consciousness inform my approach to leading Black youth empowerment programming? (3) How does a critique …

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Performance-Based Funding In Texas: Sensemaking Experiences Of Administrators At Hispanic-Serving Community Colleges, Kathleen Elizabeth Launius May 2022

Performance-Based Funding In Texas: Sensemaking Experiences Of Administrators At Hispanic-Serving Community Colleges, Kathleen Elizabeth Launius

Educational Leadership & Policy Studies Dissertations - Archive

Despite the expansive literature on higher education performance-based funding (PBF) policies, there is an oversaturation of quantitative studies focused on measuring metric performance at the statewide level. These studies have largely found that PBF fails to meet its goal of improving graduation rates and has unintended consequences for historically underserved student populations (e.g., Black, Latinx/a/o, low-income) and under-resourced institutions (e.g., community colleges, minority-serving institutions). Further, the limited qualitative studies have revealed widespread positive attitudes and institutional changes at the campus level in the early stages of policy implementation. However, the literature fails to critically examine campus-based attitudes and experiences over …

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"And Still I Rise": Exploring Black Women's Joy While Aspiring To The College Presidency, Courtney E. Matthews May 2022

"And Still I Rise": Exploring Black Women's Joy While Aspiring To The College Presidency, Courtney E. Matthews

Educational Leadership & Policy Studies Dissertations - Archive

Despite the expansion of literature on Black women college presidents, there is an oversaturation of the struggles Black women experience once in the role that is rooted within the role of racism and sexism. This study focuses on understanding how Black joy influences Black women's aspirations to pursue university or college presidencies at historically white institutions (HWIs). The legacy of Black joy in Black communities is one of healing, resistance, and restoration. Yet, little is understood about how Black joy impacts Black women's experience in higher education. Black women’s journeys to the presidency are a unique exploration of their present-day …

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Black Male Baccalaureate Degree Attainment: The Relationship Between Single- Mother Status, Family Background Factors, High School Gpa And College Engagement, Michael T. Russ May 2022

Black Male Baccalaureate Degree Attainment: The Relationship Between Single- Mother Status, Family Background Factors, High School Gpa And College Engagement, Michael T. Russ

Educational Leadership & Policy Studies Dissertations - Archive

Low bachelor’s degree attainment rates for Black males is a multiplex problem due to the array of academic and non-academic factors affecting student experiences. Among these factors, family factors play an important role in students’ development and educational success, particularly for Black students. While previous research has explored some contributing factors to the low degree completion rate of Black males, there is a paucity of research specific to how the status of the single-mother household impacts Black males’ degree completion. Therefore, this study sought to examine the relationship between household status and Black male college engagement and degree attainment. Furthermore, …

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Exploring Deep Learning In Finance, Abhijit Anand Anand Deshpande May 2022

Exploring Deep Learning In Finance, Abhijit Anand Anand Deshpande

Industrial, Manufacturing, and Systems Theses - Archive

Financial market analysis is process of analyzing market closely and predict the next move of market whether it will go up or down using historical data. Financial market is stochastic and has rapid changes over time, therefore it is very difficult to predict. The main goal of this work is to understand novel approaches of machine learning in finance, data parsing techniques, labelling the financial data. Furthermore, understand state of art Transformer model and implement and compare results with other traditional machine learning algorithms. Experiment carried out in python along with pytorch.

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Vibro-Acoustic Analysis Of A Fan Blade, Matthew Koithan May 2022

Vibro-Acoustic Analysis Of A Fan Blade, Matthew Koithan

2022 Spring Honors Capstone Projects - Archive

A frequent problem with rotating machinery is vibration. Vibration in a rotating part can be caused by unequal mass distribution. A sound or acoustic wave is created by a pattern or disturbances traveling through a medium. Vibration and Acoustics can be dealt with individually, however, if they share a common source, both could be solved simultaneously. The purpose of this project is to correlate the fan noise to the rotor imbalance. The unbalanced mass can be removed by aligning the center of gravity (CG) with the axis of rotation, which eliminates any coupled moments. The vibration is measured using accelerometers …

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Computational Modeling Of Post-Surgical Hypertrophic Heart For Surgical Planning, Sudhir Pandit May 2022

Computational Modeling Of Post-Surgical Hypertrophic Heart For Surgical Planning, Sudhir Pandit

2022 Spring Honors Capstone Projects - Archive

Hypertrophic cardiomyopathy (HCM) is a clinically prevalent disease in people around the world, with potential outcomes ranging from sudden cardiac arrest and/or heart failure to the normal life expectancy of the patients. HCM is a condition where the interventricular septal wall becomes abnormally larger, making it difficult for the heart to pump blood from the left ventricle. The current gold standard for the treatment of HCM is Cardiac Myectomy, in which the overgrown tissues are resected to correct the heart and restore the blood flow. Due to the complex anatomy of the heart and anatomical differences in the internal structures …

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Expanding The Interoperability Of Healthcare Record Systems, In Spite Of Personal Privacy Issues, Kabin Magar May 2022

Expanding The Interoperability Of Healthcare Record Systems, In Spite Of Personal Privacy Issues, Kabin Magar

2022 Spring Honors Capstone Projects - Archive

There has been a push to implement the tenets of the Management Information Systems (MIS) by the American Recovery and Reinvestment Act (ARRA) of 2009, the Federal Communications Commission (FCC) Broadband Plan, and the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010, which have led to continued growth in the use of the electronic healthcare record (EHR). The adoption of innovative technologies in the digitization of health records, use of telehealth solutions, and global problems, such as the pandemic, have presented MIS professionals with “big data” concerns that effect source systems, marketing, …

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360 Degree Posture Detection In Mobile And Desktop Version Of Aasan, Dhruva Malik May 2022

360 Degree Posture Detection In Mobile And Desktop Version Of Aasan, Dhruva Malik

2022 Spring Honors Capstone Projects - Archive

A lot of working people spend their time doing desk jobs. This results in various complications and problems with age. Early on development of bad posture can be fixed before it becomes a habit and. As a result, people may develop inadequate spine posture, which can cause profound implications such as back pain if not corrected at an early stage. “Aasan” the name of the application comes from a Sanskrit word meaning posture, and as the goal of it is to eliminate the wrong posture practices among the world, this name gives the app a meaningful and purpose driven feeling. …

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Insurance Fraud Detection, Senior Design Enhanced Project, Nischal Rana May 2022

Insurance Fraud Detection, Senior Design Enhanced Project, Nischal Rana

2022 Spring Honors Capstone Projects - Archive

Insurance is a major service provided to consumers that provides some relief concerning their valuable assets in the modern world. With so many valuable objects on the market, insurance claims are at an all-time peak, and with this comes attention, both wanted and unwanted. Insurance Fraud Detection is a sophisticated web application integrated with various modules that help insurance agents determine whether a claim by a client is fraudulent or not. Insurance agents can utilize this application to web scrape the internet for clues about the item in question to determine if it is still in the original owner's possession. …

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Impact Of Stability And Control On Vehicle Geometry And Performance: A Design Study On Traditional Hypersonic Vehicles Vs Controlled Configured Hypersonic Vehicles, Juan Camilo Buritica Yate May 2022

Impact Of Stability And Control On Vehicle Geometry And Performance: A Design Study On Traditional Hypersonic Vehicles Vs Controlled Configured Hypersonic Vehicles, Juan Camilo Buritica Yate

2022 Spring Honors Capstone Projects - Archive

Hypersonic vehicles have been in development for over 60 years, yet a control-configure-vehicle has yet to be designed to understand the possible improvements over statically stable configurations. This paper studies the effect of stability and control on aircraft geometry and performance by comparing traditional vehicles versus control configured vehicles (CCV) that operate at subsonic and supersonic speeds and extrapolates this analysis to predict these effects on hypersonic vehicles. Data related to geometry, aerodynamic performance, and stability from various vehicles were collected and used to find trends by comparing aircraft design parameters to stability criteria. The results showed that by decreasing …

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Gender Differences In Perception Of Dyspnea And Its Relation To Muscle Weakness, Functional Status, Disability In Activities Of Daily Living, And Depression In Adults With Heart Failure—A Secondary Analysis, Michelle Minh Tran May 2022

Gender Differences In Perception Of Dyspnea And Its Relation To Muscle Weakness, Functional Status, Disability In Activities Of Daily Living, And Depression In Adults With Heart Failure—A Secondary Analysis, Michelle Minh Tran

2022 Spring Honors Capstone Projects - Archive

Although Heart Failure (HF) can occur in both women and men, some studies have shown that both genders do not present the same outcomes; however, there is an underrepresentation of the effect of gender on the relationship of HF and changes in activities of daily living. This study compared the effects of gender on dyspnea and other variables to determine differences between symptoms, disability, and other relationships. A secondary analysis of a cross-sectional descriptive study was conducted with 186 patients who were told to perform several tests to evaluate muscle weakness, functional status, depression, and disability. Instruments such as the …

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Social And Environmental Disparities In Physical Activity And Childhood Obesity In 2-5-Year-Old Children, Alexis Jones May 2022

Social And Environmental Disparities In Physical Activity And Childhood Obesity In 2-5-Year-Old Children, Alexis Jones

2022 Spring Honors Capstone Projects - Archive

Social and environmental factors are important determinants of physical activity (PA) and childhood obesity. The purposes of this study were to 1) explore associations of social-demographics (i.e., ethnicity, social-economic status [SES], gender), PA, sedentary behavior (SB), and BMI percentile with social/built environment and 2) explore SES disparities in environmental determinants of health. This cross-sectional study recruited 40 preschoolers (Mage=3.55 years; 75% girls; 17.5% low SES; 30% Hispanic; 10% overweight/obese). Parent-report surveys measured social-demographics, PA outcomes, and social/built environment. Results indicated higher SES children engaged in more PA and less SB than low-SES peers. SES significantly associated with PA, obesity, crime …

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Study Of Neutrino Background For The Low-Mass Dark Matter Search In Future Neutrino Experiments, Aayush Bhattarai May 2022

Study Of Neutrino Background For The Low-Mass Dark Matter Search In Future Neutrino Experiments, Aayush Bhattarai

2022 Spring Honors Capstone Projects - Archive

With high-intensity neutrino beams and large mass detectors, neutrino physics has entered the high precision measurement era. Accelerator experiments that use high-intensity proton beams impinging on a fixed target could produce dark matter along with neutrinos. DUNE, one of the most extensive neutrino experiments under construction, has similar prospects of looking for low-mass dark matter (LDM) produced in the proton interactions with the target. With the possibility of charge-neutral LDM production in the target, numerous neutrinos will be generated alongside it, which will be the primary background to the LDM signal. To understand these neutrino backgrounds, we studied two “modified …

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Destroying Man: Philosophically Situating C. S. Lewis’ The Abolition Of Man, Anna Elizabeth Tarpley May 2022

Destroying Man: Philosophically Situating C. S. Lewis’ The Abolition Of Man, Anna Elizabeth Tarpley

2022 Spring Honors Capstone Projects - Archive

Lewis’ central argument in The Abolition of Man explains the philosophical consequences of extending assumptions implicit within scientific methodologies and originally used to treat Nature to include a treatment of humans. This thesis elucidates Lewis’ philosophical concept of man’s “Power Over Nature” by providing the historical and philosophical context out of which it developed. Multi-disciplinary research relying on primary source documentation, secondary academic literature, biographical material, and philosophical text was used to synthesize a descriptive philosophical narrative in two parts. The first part consists in the historical basis for the shift in ideas involved in Lewis’ argument as manifest in …

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A Proposed Approach For Testing An Educational Virtual Reality Simulation For End-Of-Life Care, Jasmine Hyder May 2022

A Proposed Approach For Testing An Educational Virtual Reality Simulation For End-Of-Life Care, Jasmine Hyder

2022 Spring Honors Capstone Projects - Archive

Virtual Reality (VR) is becoming more popular with the continuous introduction of newer and more capable technology. Specifically, VR educational simulations can provide training on complex situations that may be difficult to carry out in real life. In an attempt to improve the quality of end-of-life care knowledge among nursing students, a VR simulation is in development that presents related scenarios nurses may face. Rigorous testing of this simulation is essential to produce effective results that separates itself from 2D simulations or other educational methods. A testing framework and plan is proposed here that can be extended to future VR …

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Proposal For Uta-Downtown Arlington Bike Network, Anna Laura Harmjanz May 2022

Proposal For Uta-Downtown Arlington Bike Network, Anna Laura Harmjanz

2022 Spring Honors Capstone Projects - Archive

Bicycling offers great benefits for cities including sustainable, efficient, and affordable transportation, improved health and wellness, and creating vibrant communities. Universities offer a good starting point for young adults to form sustainable transportation habits. This study explores how the University of Texas at Arlington’s community perceives existing bike infrastructure, services, and amenities on campus and off-campus to create a well-connected and safe bike network. An online survey was used to collect feedback from students and employees on commuting patterns, cycling experience and barriers, perceived safety on various bike facilities, and suggestions. Based on survey responses, a bike network analysis was …

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United Nations Peacekeepers, The Use Of Sexual Exploitation And Abuse, And Feminist Theory, Corrina Marie Sullivan May 2022

United Nations Peacekeepers, The Use Of Sexual Exploitation And Abuse, And Feminist Theory, Corrina Marie Sullivan

2022 Spring Honors Capstone Projects - Archive

Why do United Nations peacekeepers enact sexual harm against the very populations they are meant to protect? Given that the purpose of United Nations peacekeepers is to promote peace in a country following a period of unrest and/or violence, acts of sexual exploitation and abuse are antithetical to their purpose. These acts also inflict trauma on populations meant to be protected. Finally, this behavior undermines the general trust in the United Nations. Therefore, when peacekeepers engage in acts of sexual exploitation and abuse, these acts have larger implications for not only the peacekeeping force but the United Nations as a …

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