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Density Functional Theory Calculations On Electronic And Optical Properties Of Mos2/Metal Heterojunction, Mos2/Graphene/Metal Vertical Heterostructure Interfaces And Sulfur Vacancies On Mos2/Au, Shishir Timilsena
Theses and Dissertations
In this study, we conducted a comprehensive investigation on computational simulations and analyses of heterostructures formed by two-dimensional (2D) molybdenum disulfide (MoS2) and graphene (Gr) on various metal coated substrates, including gold (Au), copper (Cu), nickel (Ni), and platinum (Pt). The frequency-dependent dielectric function (ɛ(ω)), refractive index (n), and reflectivity (R) are determined using light polarization parallel and perpendicular to the c axis of the 2D layers. Our findings reveal that MoS2/Au, MoS2/Cu, and MoS2/Pt heterostructures exhibit a direct bandgap at the K-point of the Brillouin zone, whereas their corresponding MoS2/MoS2/Metal structures present an indirect bandgap. The reduced interlayer spacing …
Vessel Delay Detection And Pattern Mining From Ais Data, Naznin Ara
Vessel Delay Detection And Pattern Mining From Ais Data, Naznin Ara
Theses and Dissertations
The maritime industry relies on the Automated Identification System (AIS) for real-time vessel tracking and navigation. This thesis focuses on detecting vessel delays and mining delay patterns from AIS data, which are crucial for improving shipping schedules, port operations, and global trade logistics. The research begins with rigorous data preprocessing, including noise reduction, data interpolation, and anomaly detection, to ensure high-quality AIS data as well as focuses on detecting vessel delays and mining delay patterns from AIS data to enhance maritime operations. Advanced machine learning models analyze temporal and spatial features to detect delays, considering vessel type, speed, and route. …
Thermodynamic Feasibility Of Potential Nano-Energetic Systems Based On Metal Oxynitrides, Manoj Chhetri
Thermodynamic Feasibility Of Potential Nano-Energetic Systems Based On Metal Oxynitrides, Manoj Chhetri
Theses and Dissertations
A computational study was undertaken with the objective of identifying the nano-energetic systems containing aluminum as fuel and metal oxynitrides as oxidizer, aiming to achieve an exothermic reaction characterized by the maximum values of gas generation, adiabatic combustion temperature, and energy release. For the thermodynamic calculation, nine systems based on metal oxynitrides were taken using the THERMO software that works based on the Gibbs free energy minimization, together with HSC Chemistry 7 to calculate the thermodynamic equilibrium concentrations of reactants and products corresponding gas generation, temperature and energy release by varying the fuel to oxidizer ratio. Among all the chosen …
The Effect Of Context Diversity In Virtual Reality Environments On Speech Motor Learning In A Person With Aphasia And Apraxia Of Speech, Shelby Keeler Holloway
The Effect Of Context Diversity In Virtual Reality Environments On Speech Motor Learning In A Person With Aphasia And Apraxia Of Speech, Shelby Keeler Holloway
Theses and Dissertations
This study explored the effect of contextual diversity on speech motor learning in an individual with apraxia of speech (AOS) using virtual reality (VR). One 62-year-old participant with severe AOS participated in the study where he practiced monosyllabic CVC words in both consistent and diverse VR environments. Kinematic, acoustic, and perceptual data were collected and evaluated for evidence of learning. Kinematic data were collected using electromagnetic articulography where sensors were glued to the participant's upper lip, lower lip, tongue blade, and tongue tip and were tracked with high precision. In addition, acoustic and perceptual data were collected using a microphone …
Exploratory Analysis In Rio Grande Valley Real Estate Development, Mathew C. Sosa
Exploratory Analysis In Rio Grande Valley Real Estate Development, Mathew C. Sosa
Theses and Dissertations
The aim of this thesis is to apply exploratory data analysis and machine learning (ML) to answer critical questions in real estate development within the Rio Grande Valley (RGV). The real estate development sector is highly dynamic and relies on multiple integrated systems and planning to bring new homes to the market. Customer Relationship Management (CRM) software and real estate listing services, such as Redfin, are utilized to manage the customer lifecycle and analyze the local market, respectively. Two of the most crucial aspects of the customer lifecycle are the first home tour and deal closing. This paper explores the …
Redefining Spaces Of Resistance Against Capitalism And Patriarchy: A Study Of Females In Society And The Family As Presented By Mrs. Warren’S Profession (1893) By Bernard Shaw And A Raisin In The Sun (1959) By Lorraine Hansberry, Jennifer L. Gonzalez
Theses and Dissertations
These plays show how conflicts concerning race, gender, and class stem from economic distress, racial discrimination, and patriarchal oppression. Within such intersections lie distinct realities of capitalism which simultaneously upholds patriarchal ideals that can only be best understood through a Marxist-Feminist lens. This thesis pays attention to how racism and discrimination functions to isolate certain groups of people from reaching social mobility. The first chapter analyzes Mrs. Warren’s Profession to demonstrate how Mrs. Warren decision to enter into prostitution cannot simply be reduced to a question of morality, but rather a question of society’s conditions that place women into certain …
Reimagining Non-Credit Higher Education: The Impact Of Non-Credit Short-Term Accelerated Postsecondary Workforce Training At Santa Fe Community College, Monique Anair
Theses and Dissertations
An estimated five million Americans participate in non-credit college and university classes annually. The Integrated Postsecondary Education Data System (IPEDS) does not require the reporting of non-credit student postsecondary enrollment, which means there is a lack of data about non-credit higher education. This qualitative case study provides a deeper understanding of 14 student experiences at Santa Fe Community College who participated in non-credit, short-term, accelerated workforce training programs. The findings reveal that students who engage in Santa Fe Community College’s non-credit postsecondary opportunities, are low-wage or unemployed working age adults who value short-term non-credit programs because they lead to higher …
Development Of Multifunctional Biobased Lubricants From Soybean Oil And Their Tribological Behavior, Piash Bhowmik
Development Of Multifunctional Biobased Lubricants From Soybean Oil And Their Tribological Behavior, Piash Bhowmik
Theses and Dissertations
Depletion of mineral oil leads the researchers to look for renewable oils recently. Soybean, which is one of the most produced crops globally, has been identified as a potential source for such oil. The problem with vegetable oils is, they consist of unsaturated fatty acids which leads to oxidation of the oils. With proper modification and the use of suitable additives, these oils can be adapted for use in various sectors. High oleic oils are becoming increasingly popular due to their high oleic acid content, which is a monounsaturated fatty acid. These oils are gaining attention for their improved stability …
Optimizing Laser-Based Wireless Power Transfer: A Comprehensive Study Of A 4 Quadrant Pv Module System And Its Powering And Tracking Capabilities, Ahmed Elfarran
Theses and Dissertations
This research investigates laser-based tracking systems for wireless power transfer (WPT) applications. Beginning with an overview of renewable energy and WPT technologies, the study establishes both theoretical frameworks and practical methodologies for laser-based power transmission. The experimental analyses encompass load testing with a four-quadrant module, examining the impact of laser power, load conditions, and beam diameter on power transfer efficiency, as well as the influence of target movement speed on voltage stability. Notably, we achieved a tracking speed of up to 20 mm/s, ensuring efficient power delivery even with target motion. The results demonstrate clear correlations between laser power levels …
Wooyake Winyan: The Experience Of Three Native Women In Higher Education Leadership At 4-Year Institutions In The Midwest, Raven Gray
Theses and Dissertations
Native women in higher education have faced many challenges and disparities, specifically within 4-year institutions. This research used a qualitative method known as storytelling to identify ways of progression for Native women in higher education leadership while being supported by the theoretical framework of aspirational capital. Additionally, this knowledge is explained through cultural ways of storytelling, with hope of gaining perspective of Native female leadership and how this impacts Native communities within higher education. Through this research, it portrayed the experience of Native women in Higher education leadership which included their successes and challenges. Each participant shared their background of …
Density Functional Theory Study Of Some Important Biological Molecules, Desmond Khan
Density Functional Theory Study Of Some Important Biological Molecules, Desmond Khan
Theses and Dissertations
This study examines the performance of various quantum chemical methods, particularly density functional theory (DFT), in predicting noncovalent interactions in eleven unnatural amino acids. The research compares five DFT functionals (PBE-D3, B3LYP-D3, HSE06, M06-2X, and ꞷB97XD) and MP2 theory against the benchmark CCSD(T) method, using two Pople basis sets (6-31G* and 6-311++G**). Results highlight ꞷB97XD's superior performance in capturing strong dispersion interactions, especially when paired with the 6-311++G** basis set. Additionally, the study investigates interactions between biomimetic Fe and Mg co-doped montmorillonite clay and the amino acids. It reveals the necessity of employing PBE-GGA + U with U ≥ 4 …
Verification And Validation Of Software System Class Models, Kruti Shah
Verification And Validation Of Software System Class Models, Kruti Shah
Theses and Dissertations
The Unified Modeling Language (UML) is a foundation in software development, providing standardized notation for visualizing, specifying, constructing, and documenting software systems. UML class models, in particular, offer a static view of a system's structure, capturing essential elements such as classes, attributes, operations, and relationships. Despite the widespread adoption of UML and its class modeling capabilities, challenges persist in ensuring the models' correctness, reliability, and effectiveness. This research presents a comprehensive study of UML's role in software development, delving into existing literature to examine the development of UML class models, its significance in various stages of the software development lifecycle, …
High Performance Simulation Of Astrocyte Morphology And Dynamics For Brain Imaging, Lun Zhao
High Performance Simulation Of Astrocyte Morphology And Dynamics For Brain Imaging, Lun Zhao
Theses and Dissertations
The brain is a complex organ composed of neurons and glial cells. Historically, glial cells were often overlooked in neuroscience research, but their significance has gained increasing recognition in recent years due to mounting evidence demonstrating their pivotal roles in brain function and disease. Notably, a growing body of research highlights the active involvement of astrocytes, the most abundant type of glial cells, in numerous neurological diseases. With the development of microscopy technology, our understanding of astrocytes is becoming more and more abundant. Due to the characteristics of microscopy, tissue scattering and environmental noise, there is a high demand for …
Experimental Investigation Of The Suitability Of Soybean-Derived Surfactant (Sods) In Gas Well Deliquification, Abiodun Gbadegesin Adeyemi
Experimental Investigation Of The Suitability Of Soybean-Derived Surfactant (Sods) In Gas Well Deliquification, Abiodun Gbadegesin Adeyemi
Theses and Dissertations
Gas well deliquification is a crucial process in the oil and gas industry, focused on maintaining or restoring production rates by removing liquids that impede gas flow. This is a recurring challenge that is prominent in many gas wells across North Dakota. Surfactants play a vital role in this process by altering the interfacial tension between gas and liquid phases, alleviating liquid accumulation in these wells. However, due to their high production costs, non-biodegradability, and toxicity, the use of synthetic surfactants has raised environmental concerns. The pursuit of sustainable and environmentally friendly alternatives has led to the exploration of natural …
The Experiences And College Readiness Of Native American Students Who Participated In Dual Credit/Dual Enrollment And Transitioned To Higher Education, Krystal Marie Caldwell
The Experiences And College Readiness Of Native American Students Who Participated In Dual Credit/Dual Enrollment And Transitioned To Higher Education, Krystal Marie Caldwell
Theses and Dissertations
This qualitative research study employed the Diverse Learning Environment Model to examine how dual credit/dual enrollment course participation by Native American students impacts their college readiness and transition to college. Literature shows that students who take dual credit/dual enrollment in high school are more likely to graduate from high school and transition to college and have less time to degree completion. Furthermore, dual credit/dual enrollment course participation also increases students’ college readiness and improve student’s self-efficacy. The guiding notion of this paper are the overwhelming benefits to students who participate in dual credit/dual enrollment coursework in high school and how …
Examining Tele-Mental Health Utilization In North American Indigenous Communities, Elleh A. Driscoll
Examining Tele-Mental Health Utilization In North American Indigenous Communities, Elleh A. Driscoll
Theses and Dissertations
Tele-mental health delivery reported by clinicians in Indigenous communities before, during, and after the pandemic has largely remained unexplored across psychology literature. Tele-mental health (TMH) is the utilization of technology tools to communicate and treat clients (Riding-Malon, 2014). TMH (i.e. mental health services accessed via zoom, telephone, etc.) is associated in recent research with effective rates for mental health care treatment comparable to in-person rates for both immediate and long-term outcomes (McCord, 2020; Lin, 2021). The current study examined self-reported mental health clinicians (n=104) serving North American Indigenous clients on a variety of TMH factors during and after the COVID-19 …
Impact Of Substance Use And Perceptions Of Social Support On Psychological Distress Following Traumatic Brain Injury, Laura Gorman
Impact Of Substance Use And Perceptions Of Social Support On Psychological Distress Following Traumatic Brain Injury, Laura Gorman
Theses and Dissertations
Introduction: Traumatic Brain Injuries (TBI) are the leading cause of disability and mortality for individuals under the age of 45 (Centers for Disease Control and Prevention, 2021; Moore et al., 2014). Previous research has informed us that substance use, perceptions of social support, and TBI severity have all been associated with increased levels of psychological distress. Given the prevalence of TBI and its impact on physical and mental health outcomes, it is important to understand how outside factors (substance use and perceptions of social support) relate with TBI severity to effect overall levels of psychological distress. Objective: Drawing from self-determination …
The Impact Of Upper-Elementary C3wp Resources On First Draft Student Writing Samples: A Study Of Lexical Cohesion, Semantic Overlap, Grammar And Mechanics, Lisa Fricke Gusewelle
The Impact Of Upper-Elementary C3wp Resources On First Draft Student Writing Samples: A Study Of Lexical Cohesion, Semantic Overlap, Grammar And Mechanics, Lisa Fricke Gusewelle
Theses and Dissertations
This study examines the impact of the College, Career, and Community Writers Program (C3WP) on upper-elementary students' first draft writing quality, addressing the challenges teachers face in providing timely and effective feedback on extensive student writing, particularly in spelling, grammar, mechanics, and cohesion. The hypothesis posits that C3WP resources will improve students' writing by enhancing lexical cohesion and reducing surface-level errors. Four 6th-grade students with varying reading proficiency levels participated in two C3WP mini-units over a two-month period. First drafts were analyzed using the Tool for the Automatic Analysis of Text Cohesion (TAACO) to measure semantic overlap and lexical cohesion, …
Examining Mental Health Professionals' Attitudes Towards Individuals With Rural Accents, Emily Heavner
Examining Mental Health Professionals' Attitudes Towards Individuals With Rural Accents, Emily Heavner
Theses and Dissertations
Bias against people from rural areas is ingrained in American culture, and stereotypes that people from rural regions are backwards, uneducated, and unintelligent are prevalent (Fulkerson & Thomas, 2016; Hartman et al., 2023; Howley, 2009; Shirley, 2010). Many people from rural areas have accents that mark them as coming from a rural region (Flanigan, 2000). Research suggests that accent is a reminder that the speaker is from a different cultural group than the listener, triggering biases and stereotypes about the speaker (Chakraborty, 2017). Because accent and rural culture are not often discussed as part of multicultural competence, many mental health …
Insights From Teachers And Students On Literacy Strategy Integration In A Rural North Dakota High School, Margaret Hilbers
Insights From Teachers And Students On Literacy Strategy Integration In A Rural North Dakota High School, Margaret Hilbers
Theses and Dissertations
Literacy development is an essential aspect of academic success. Educational institutions have worked to implement various strategies and initiatives to increase students’ literacy skills. Understanding the insights of both students and teachers is important for utilizing these skills effectively and if they have impact. Implementing strategies and initiatives at the secondary level should be strategic and help strengthen teachers’ instruction but also student outcomes. The study aims to understand the insights and experiences of both students and teachers to create more opportunities to enhance literacy instruction and strategies used in secondary content area classes. Research indicates that teachers need more …
Activities Eligibility: Building A More Equitable Approach To Support Students, Cory Holten
Activities Eligibility: Building A More Equitable Approach To Support Students, Cory Holten
Theses and Dissertations
In this study, the researcher analyzed the impact of traditional cocurricular activityeligibility practices on minoritized students, students with disabilities, and students receiving free and reduced lunches. The researcher issued a survey to staff members at Horizon Middle School in Moorhead, Minnesota to gain an understanding of the perceived impact of participation in cocurricular activities and the impact and observed disparities existing as a result of traditional eligibility practices. As a result of the findings, the researcher proposes an alternative approach focused on identifying lagging skills through the collection of student data related to academic achievement, attendance, and behavior. Instead of …
A Thematic Analysis: A Lived Experience Raising A Child Diagnosed With A Neurodevelopmental Disability In A Rural Community, Matthew Kettelhake
A Thematic Analysis: A Lived Experience Raising A Child Diagnosed With A Neurodevelopmental Disability In A Rural Community, Matthew Kettelhake
Theses and Dissertations
In the United States, about 17% of children between the age of 3 and 18 are diagnosed with a neurodevelopmental disability (Zablowsky et al; 2019). About 14% of the population lives in a rural community (USDA, 2020). Being part of a rural community has additional challenges urban areas may not face (Sharpley et al., 1997; Hasting &Taunt, 2002; Gerstein et al.,2009; Dabrokska & Pisula, 2010). Parents of children diagnosed with a neurodevelopmental disability also face additional challenges than raising a neurotypical child. This study explored the themes and commonalities that arise from raising a child diagnosed with a neurodevelopmental disability …
An Evaluation Of Naaps During Canadian And U.S. East Coast Smoke Events In May And June 2023, Taylor Mchone
An Evaluation Of Naaps During Canadian And U.S. East Coast Smoke Events In May And June 2023, Taylor Mchone
Theses and Dissertations
An unprecedented number of wildfires occurred across the Canadian mainland during May and June 2023 due to unusually hot and dry atmospheric conditions. As a result of these wildfires, smoke was transported over large areas of North America, posing significant threats to visibility, air quality, human health, and the economy. The global Navy Aerosol Analysis and Prediction System (NAAPS) model was the first model of its kind to predict global aerosol transport, including, among others, wildfire smoke. Operationally, NAAPS produces predictions of the horizontal and vertical distribution of smoke and how it diffuses through space and time. This study evaluates …
Evaluating Pressure Distribution Of Surgical Support Surfaces For Pressure Injury Prevention: Small-Cell Alternating Pressure Mattress, Standard Foam Mattress, And Gel Overlay, Victor Moreno Lozano
Evaluating Pressure Distribution Of Surgical Support Surfaces For Pressure Injury Prevention: Small-Cell Alternating Pressure Mattress, Standard Foam Mattress, And Gel Overlay, Victor Moreno Lozano
Theses and Dissertations
Pressure injuries are a significant problem in the health care system for patients undergoing long surgeries due to the prolonged time they spend on the surface without moving under the anesthesia effect [6]. This can lead to the occurrence of pressure injuries and can negatively affect patient outcomes and the healthcare system [3]. Current methods for preventing pressure injuries in the operating room include repositioning the patient, using sponges or small gel pads at pressure points, and the use of support surfaces [2]. There is not enough conclusive evidence that states that the use of support surfaces is effective in …
Maturational Changes In The Epigenome And Transcriptome Of Hypothalamic Astrocytes: Implications For Axonal Regeneration, Abiodun Ebenezer Odufuwa
Maturational Changes In The Epigenome And Transcriptome Of Hypothalamic Astrocytes: Implications For Axonal Regeneration, Abiodun Ebenezer Odufuwa
Theses and Dissertations
Axon regeneration is essential for effective repair following injury in the CNS. One of the burdens of aging is the lack of recovery following injury in the CNS. Our previous studies show that in 35-day-old rats, axon regeneration occurs in response to a unilateral hypothalamic lesion in the hypothalamus neurohypophyseal system. However, this regenerative ability is lost in 125-day-old rats. Furthermore, treatment of hypothalamic organotypic culture with ciliary neurotrophic factor (CNTF) promotes axonal outgrowth and survival. Our previous studies suggest that astrocytes may be playing critical roles in this maturational loss of regenerative capacity because only astrocytes expressed all the …
Opencast: Cyanobacteria Growth And Correlations With Predictive Factors In Creation For Harmful Algal Bloom Formation, Devarshi Nikhil Patel
Opencast: Cyanobacteria Growth And Correlations With Predictive Factors In Creation For Harmful Algal Bloom Formation, Devarshi Nikhil Patel
Theses and Dissertations
Harmful Algal Blooms (HABs) are a significant threat to aquatic ecosystems, public health, and local economies due to their production of toxins and negative impacts on water quality. This thesis investigates the correlations between cyanobacteria growth and environmental variables, including wind conditions, surface temperatures, and nutrient levels. This research uses machine learning and statistical modeling to predict HAB occurrences by analyzing these variables' historical and near real-time data. The findings indicate that wind speed, surface temperature, and nutrient levels influence cyanobacteria dynamics, with specific thresholds identified for predictive accuracy. The developed HAB predictive models and the graphical user interface (GUI) …
Transcriptional Landscape Of Foxp3+ Regulatory T Cells Under Mitochondrial Oxidative Stress: Implications For Inflammaging, Jappreet Singh Gill
Transcriptional Landscape Of Foxp3+ Regulatory T Cells Under Mitochondrial Oxidative Stress: Implications For Inflammaging, Jappreet Singh Gill
Theses and Dissertations
This thesis explores the intricate relationship between mitochondrial oxidative stress and the function of FOXP3+ regulatory T cells (Tregs), highlighting their essential roles in the aging immune system and the development of age-related diseases. The study delves into how mitochondrial impairments within Tregs contribute to widespread inflammation leading to pathological aging. One key analysis shows that mitochondrial oxidative stress undermines Treg functionality, intensifying inflammatory responses and increasing frailty in older adults. This dysfunction is associated with elevated inflammatory markers and presents a potential target for therapeutic interventions aimed at restoring mitochondrial health to alleviate these impacts. Another significant discovery connects …
Ads-B/Gps Integrity Identification And Evaluation Using Machine Learning Models, Anton Reider Skurdal
Ads-B/Gps Integrity Identification And Evaluation Using Machine Learning Models, Anton Reider Skurdal
Theses and Dissertations
Automatic Dependent Surveillance-Broadcast (ADS-B) is part of the Federal Avi-ation Authority’s (FAA) NextGen position, navigation, and timing (PNT) system, but its packets are unauthenticated and vulnerable to attack by bad actors. This re- search aims to develop methods to detect and mitigate GPS and ADS-B risks for aircraft systems. First, a Random Forest Classifier (RFC) model was trained to clas- sify categories (erroneous, noise, dropouts) of data, achieving an accuracy of 87%. Following this, many single-stage and two-stage forecasting models were tested to forecast Navigation Integrity Category (NIC) values, with the two-stage Random For- est Regressor (RFR) achieving the lowest …
Administering Psychological Tele-Assessment: A Delphi Study, Amanda Willyard Walkowiak
Administering Psychological Tele-Assessment: A Delphi Study, Amanda Willyard Walkowiak
Theses and Dissertations
The Coronavirus 2019 (COVID-19) outbreak increased demand for telehealth services for mental health providers (Zhou et al., 2020). To our knowledge, conducting psychological assessments through tele-health platforms has limited empirical and ethical support (Wright et al., 2020; Stifel et al., 2020; American Psychological Association [APA], 2020a). Moving from traditional to remote testing administration requires preparation, training, and practice (Joint Task Force for the Development of Telepsychology Guidelines for Psychologists [Telepsychology Task Force], 2013; Wright et al., 2020). Even if psychologists have access to test materials and the necessary technology to conduct tele-assessments, they may not have the training and clinical …
The Role Of Shareholder Derivative Lawsuits In Accounting: Impacts On Corporate Information Quality And Audit Fee Determination, Md Zubair Zuven
The Role Of Shareholder Derivative Lawsuits In Accounting: Impacts On Corporate Information Quality And Audit Fee Determination, Md Zubair Zuven
Theses and Dissertations
This dissertation consists of two essays on shareholder derivative lawsuit issues in accounting. In the first essay, I investigate the causal effect of shareholder litigation rights on information quality by using the staggered adoption of universal demand (UD) laws as an exogenous variation in litigation risk. My empirical findings from the difference-in-differences methodology align with the theory that shareholder litigation risk plays a deterrence role and acts as a corporate governance mechanism. I find a significant drop in information quality measures for firms incorporated in states that adopted UD laws, which is consistent with the notion that higher (lower) shareholder …