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Articles 841 - 870 of 29588
Full-Text Articles in Entire DC Network
Growing Pains: Relations Between Racial Discrimination And Body Esteem With Ethnic-Racial Identity By Pubertal Timing For Female Adolescents Of Color, Emily J. Takamasa
Growing Pains: Relations Between Racial Discrimination And Body Esteem With Ethnic-Racial Identity By Pubertal Timing For Female Adolescents Of Color, Emily J. Takamasa
Theses and Dissertations
Puberty is a near-universal experience among adolescents, and yet rarely have researchers considered the racialized contexts and salience it has, for girls of color. Using the phenomenological variant of ecological systems theory (PVEST), this study examines the relation between pubertal timing, body esteem, racial discrimination and ethnic racial identity (ERI) components (affirmation, exploration, resolution) among adolescent girls of color (n = 218, Mage = 15.7, U.S. sample). Results showed that higher body esteem predicted greater ERI exploration and resolution, particularly for girls with average or late pubertal timing. Additionally, racial discrimination was linked to higher ERI exploration and resolution only …
Quantum-Chemical Modeling Of Mechanisms And Selectivity In Open-Shell Organometallic Reactions, Michael T. Davenport
Quantum-Chemical Modeling Of Mechanisms And Selectivity In Open-Shell Organometallic Reactions, Michael T. Davenport
Theses and Dissertations
Quantum mechanical calculations have emerged as a powerful approach for directly evaluating reaction mechanisms and selectivity in transition metal-ligand complexes involving organometallic intermediates. Density functional theory (DFT) quantum mechanical methods enable the generation of potential energy surfaces and structures that define reaction mechanisms and allow for the evaluation of selectivity through statistical transition state theory. However, in certain cases, it is necessary to go beyond statistical treatments and incorporate atomic motion through molecular dynamics simulations. Additionally, many transition metal-mediated reactions involve unpaired electrons and spin state crossings. This dissertation focuses on the application of DFT-derived potential energy surfaces and molecular …
The Clinical Characteristics, Correlation With Other Disorders, And Treatment Methods For Children And Adolescents With Body-Focused Repetitive Behaviors, Paige Gunther
Student Works
Body-focused repetitive behaviors (BFRBs) are repeated actions performed on oneself as acts of self-grooming that may result in self-harm. The most common BFRBs are nail biting, excoriation (skin picking disorder), and trichotillomania (hair pulling disorder). This literature review examines the clinical characteristics, correlation with other psychological and neurological disorders, and treatment options for various BFRBs. A search of APA PsycInfo and PubMed databases yielded 74 sources, 13 of which have been used in this review. Clinical characteristics of BFRBs include emergence during childhood and adolescence, influence of other psychological disorders, self-awareness, biological sex, internalizing and externalizing behaviors, high levels of …
Rapid Beamformer Weight Calibration Update Method For The Advanced L-Band Phased Array Camera For Astronomy (Alpaca), Kayla Lyman Ward
Rapid Beamformer Weight Calibration Update Method For The Advanced L-Band Phased Array Camera For Astronomy (Alpaca), Kayla Lyman Ward
Theses and Dissertations
The Advanced L-Band Phased Array Camera for Astronomy (ALPACA) is a phased array feed instrument designed for the Green Bank Telescope. It is capable of producing 40 real-time beams on the sky, widening the telescope's field of view and significantly increasing survey speed. ALPACA employs an RF-over-fiber (RFoF) signal transport system from the phased array feed front end to the digital backend. This RFoF link is expected to introduce phase delays and changes in gain through out the course of an observation, invalidating the beamformer weights previously calculated. This work presents rapid beamformer weight calibration updates for ALPACA, a method …
A Missionary's Memoirs: Mongolia Revisited, Isaac Smith
A Missionary's Memoirs: Mongolia Revisited, Isaac Smith
Undergraduate Honors Theses
This is my story. It is a very personal story, but one that I want to share with others. Although it takes place predominantly in Mongolia, it is not merely a story about Mongolia, or even the Mongolian people. It is not really even a story about me. What is it then? It is a story about faith and love. It is an attempt to better understand how the gospel of Jesus Christ intricately fits into people’s lives all over the world—even in Mongolia. It is a compilation of essays, of memoirs, of my experiences. It is a story about …
Developmental Consequences Of Benevolent Sexism: How Awareness Can Change Women’S Lives, Bianca F. Brenes Rojas
Developmental Consequences Of Benevolent Sexism: How Awareness Can Change Women’S Lives, Bianca F. Brenes Rojas
Student Works
Benevolent forms of sexism become increasingly evident as society evolves, making everyday sexism more challenging to recognize and confront (Feigt et al., 2022; Watson et al., 2018). When unaware, benevolent forms of sexism can adversely affect women’s self-esteem, create feelings of inferiority, and may potentially increase women’s psychological stressors (Becker & Swim, 2011; Becker & Wright, 2011; Moradi & Subich, 2004). According to the ambivalent sexism theory, benevolent forms of sexism, while expressed in a positive tone, can potentially affect women due to the underlying belief that women are inferior to men (Glick & Fiske, 1996). Some women perceive benevolent …
Development And Miniaturization Of Pad-Printed Carbon Electrodes For Antibody-Type Biosensing, Elizabeth Danielle Clark
Development And Miniaturization Of Pad-Printed Carbon Electrodes For Antibody-Type Biosensing, Elizabeth Danielle Clark
Theses and Dissertations
Miniaturized, pad-printed carbon electrodes (PPCEs) offer a promising platform for antibody-type biosensors, enabling rapid and cost-effective point-of-care diagnostics. This study investigates the development, fabrication, and electrochemical performance of large and miniaturized PPCEs functionalized for antibody-type detection, with the eventual goal of detecting pancreatic cancer specific biomarkers. The PPCEs were made of silver- and carbon- based inks that were formulated to be pad printable and conductive and printed on polycarbonate film so they can be easily disposed of after use. Each PPCE was thoroughly cleaned with ethanol several times to ensure a clean base on which to adsorb antibodies and antigens. …
From Assistance To Impact: The Expanding Role Of Undergraduate Teaching Assistants In Higher Education, Erin Measom
From Assistance To Impact: The Expanding Role Of Undergraduate Teaching Assistants In Higher Education, Erin Measom
Theses and Dissertations
This dissertation is presented in a three-article format. It explores the evolving role of undergraduate teaching assistants (UTAs) in higher education, with a particular focus on how they facilitate interaction, engagement, and student success in online courses. As higher education institutions expand online learning and seek innovative ways to enhance student support, UTAs have emerged as key players in bridging the gap between students and instructors. The first article provides a scoping review of the literature on UTAs, tracing their historical evolution and examining their expanding role. While traditionally viewed as logistical or grading assistants, UTAs are increasingly taking on …
Exploring The Relationship Between Country Socioeconomic Characteristics And Electronic Waste, Keliiakekaipuka Aria Mccomber
Exploring The Relationship Between Country Socioeconomic Characteristics And Electronic Waste, Keliiakekaipuka Aria Mccomber
Theses and Dissertations
Electrical and electronic waste (e-waste) is one of the fastest-growing and most hazardous waste streams globally. Despite efforts to improve global e-waste management, 77.7 percent of e-waste remains improperly disposed of, particularly in low- and middle-income countries where environmental and health risks are greatest (Baldé et al., 2024). This study evaluates whether national socioeconomic, cultural, and governmental characteristics can predict three key e-waste outcomes: generation per capita, formal collection rates, and resulting burden per capita. Using data from 2015-2022 for 127 countries, we applied mixed effects models incorporating variables such as GDP, Human Development Index, institutional integrity, financial openness, and …
Multi-Field Quantum Conference Key Agreement Using An Integrated Photonic Green Machine, Benjamin J. Fisher
Multi-Field Quantum Conference Key Agreement Using An Integrated Photonic Green Machine, Benjamin J. Fisher
Theses and Dissertations
Quantum Conference Key Agreement (QCKA) enables a group of users to generate a shared secret key, which reduces the latency and equipment overhead of establishing multiple Quantum Key Distribution (QKD) links. Conventional QCKA protocols send a multi-photon entangled state from one user to others and a key is generated only when all photons are detected, which is inefficient at high loss and opens side-channels at the receiver side. Here, we overcome this barrier through a multi-field QCKA protocol enabled by designing, fabricating, and testing an integrated photonic Green Machine that implements an eight-mode Hadamard unitary transformation through a beam-splitter network. …
Optimized Wireless Power Transmission For Low-Cost, Energy-Efficient Internet Of Things Devices In Residential Environments, Daniel Brook Hatch
Optimized Wireless Power Transmission For Low-Cost, Energy-Efficient Internet Of Things Devices In Residential Environments, Daniel Brook Hatch
Theses and Dissertations
Wireless power transmission (WPT) offers a promising solution for powering devices in locations where traditional electrical outlets are inaccessible, such as ceilings or outdoor environments. By utilizing electromagnetic waves, such as light, WPT enables power delivery without the need for physical connections. With line-of-sight (LoS) as its primary limitation, this technology offers significant flexibility and potential for a wide range of applications, making it a compelling focus for research and innovation. Despite the advancements in WPT technologies, their practical application for powering Internet of Things (IoT) devices in real-world scenarios remains underexplored. Many IoT devices are installed in locations where …
Language Style Evaluation Validation For Implementation On Artificial Intelligence-Enhanced Augmentative And Alternative Communication Devices, Meghan A. Hunter
Language Style Evaluation Validation For Implementation On Artificial Intelligence-Enhanced Augmentative And Alternative Communication Devices, Meghan A. Hunter
Theses and Dissertations
This study explored various methods of evaluating language style for integration into prompts designed for a sophisticated augmentative and alternative communication (AAC) device. A total of 395 individuals without a language disorder were recruited via a crowdsourcing platform to complete five surveys. The initial four surveys were designed to assess individuals' language style using different approaches (questionnaire developed with ChatGPT, self-written, questionnaire developed by Hartman and McCambridge, and choosing tags). Following the completion of these four surveys, a fifth survey was dynamically created based on the responses in the previous four surveys. Each possible response in the fifth survey was …
Acute Effects Of Blood Flow Restriction During Low-Load Exercise And Recovery On Blood Flow And Performance, Shay B. Richards
Acute Effects Of Blood Flow Restriction During Low-Load Exercise And Recovery On Blood Flow And Performance, Shay B. Richards
Theses and Dissertations
Purpose: Use of blood flow restriction (BFR) during strength training with light loads has been used to induce similar muscular benefits as traditional strength training with heavy loads. Safe and effective recommendations for the use of BFR relies on an understanding of how different methods of BFR alter blood flow during rest and exercise. The purpose of this study was to compare blood flow during exercise and recovery between continuous BFR (CONT), intermittent BFR (INT), and no BFR (NBFR) as a control. Methods: 16 participants (8 male, 8 female) participated in this study on three different days, separated by at …
A Modular Simulation Environment And B-Spline Trajectory Generation Methods For Multi-Agent Uav Systems, Landon D. Shumway
A Modular Simulation Environment And B-Spline Trajectory Generation Methods For Multi-Agent Uav Systems, Landon D. Shumway
Theses and Dissertations
Multi-agent UAV systems present a complex challenge requiring solutions to numerous subproblems. This research addresses two key issues: simulation testing and path planning. A modular simulation environment is developed, enabling users to run diverse mission scenarios with heterogeneous UAV teams and to implement custom dynamic models and guidance laws. Additionally, two novel B-spline trajectory generation methods are proposed. The first generates time-synchronized B-spline paths for UAVs with arbitrary initial and final states in 2D space, accommodating scenarios where agents must follow predetermined speed profiles. The second guidance method converts spline paths between MINVO, Bézier, and non-uniform B-spline representations, leveraging the …
Exploring Consequences Of The Double Empathy Problem Across The Autistic Trait Spectrum: First Person Accounts, Cammy C. Peck
Exploring Consequences Of The Double Empathy Problem Across The Autistic Trait Spectrum: First Person Accounts, Cammy C. Peck
Theses and Dissertations
Historically, individuals on the autism spectrum were believed to have deficits in empathy. However, recent research suggests that empathy-related issues occur on both sides of the communication dynamic. This concept known as the Double Empathy Problem (DEP), posits that the perceived lack of empathy is not exclusive to autistic individuals; rather, neurotypical (NT) individuals also experience difficulty empathizing with autistic individuals (Milton, 2012). Milton et al. (2022) describes this as a "breakdown in mutual understanding". Such mutual misunderstanding can have adverse consequences for both autistic and neurotypical individuals. To our knowledge, no studies have directly examined these consequences in relation …
The Effect Of Personalized Profiles On Generating Customized Content In Artificial Intelligence Augmentative And Alternative Communication Devices, Rachel Johnson
Theses and Dissertations
With advancements in artificial intelligence (AI), several augmentative and alternative communication (AAC) devices have begun incorporating AI with the purpose of accelerating and improving message transmission for users. The results have shown that AI can significantly reduce a user's keystrokes, but the generated responses may lack personalization. The objective of this study was to investigate whether integrating a personalized profile containing user information enhances the perceived accuracy and personalization of AI generated messages. Various methods of collecting profile information and differing levels of information within the profile were evaluated. One hundred eighty-one neurotypical English-speakers with no history of language disorder …
Stepping Into Motherhood: Pregnancy-Induced Changes To Foot Structure And Biomechanics, Lauren R. Williams
Stepping Into Motherhood: Pregnancy-Induced Changes To Foot Structure And Biomechanics, Lauren R. Williams
Theses and Dissertations
INTRODUCTION: Pregnant women have an elevated risk of developing lower limb musculoskeletal disorders, likely due to the rapid increase in body mass and joint laxity. While a few studies have evaluated changes in static foot posture due to pregnancy, it is unclear if body mass or joint laxity is the primary driver. Additionally, how pregnancy affects the mechanics of the foot during dynamic movements is still not understood. PURPOSE: The purpose of this study is to investigate the foot's response to pregnancy. First, we examined foot tissue characteristics across pregnancy, specifically plantar fascia (PF) stiffness, length, and thickness. Additionally, we …
Why Yelling Feels Like The Only Option (And What To Try Instead), Vanessa Brouse
Why Yelling Feels Like The Only Option (And What To Try Instead), Vanessa Brouse
Student Works
Why Yelling Feels Like the Only Option (and What to Try Instead) explores how emotional dysregulation in parents can lead to reactive patterns like yelling, shutting down, or withdrawing, and how these responses impact children’s emotional development. Drawing on principles of emotional regulation, the piece offers practical, compassionate strategies for parents to break intergenerational cycles and build stronger, more connected relationships with their children. This article is especially relevant for parents, caregivers, and educators interested in trauma-informed parenting, emotional resilience, and behavior challenges.
Comparison Of Elementary Dual Language Immersion Programs And Non-Dual Language Immersion Classes Before And After Attrition, Nathaniel Blain Mitchell
Comparison Of Elementary Dual Language Immersion Programs And Non-Dual Language Immersion Classes Before And After Attrition, Nathaniel Blain Mitchell
Theses and Dissertations
Using a longitudinal, multi-cohort design, this study examines the academic and linguistic effects of student attrition from Spanish-English dual language immersion (DLI) programs, particularly among multilingual learners (MLs). Drawing on 10 years of assessment data from two schools, the study addresses four research questions through multinomial logistic regression and hierarchical linear modeling to evaluate predictors of attrition, reading growth trajectories, and English language proficiency across student subgroups. Results indicated that attrition was most common in the early grades and was modestly associated with disability rates. At the same time, assessment scores were not predictive of program exit. Growth modeling revealed …
Enhance K-12 Student Online Learning Engagement Through Parental Support And Parent-School Collaboration, Qi Guo
Theses and Dissertations
This dissertation investigates the role of parental support in K-12 online learning through a three-part research agenda grounded in the Academic Communities of Engagement (ACE) framework. The first article presents a systematic review of 31 empirical articles, identifying five key themes for effective parent-school collaboration, including improved communication, shared expertise, increased involvement, role clarification, and researcher-practitioner partnerships. The second study used a survey collecting data from 567 parents across eight online programs to explore challenges parents face in supporting their students' affective, behavioral, and cognitive (ABC) engagement. Eight primary challenges are identified, ranging from student struggles with focusing and motivation …
Christian Beliefs About Salvation: Measurement And Associations With Mental Health And Well-Being, Anthony Edward Rose, Timothy B. Smith
Christian Beliefs About Salvation: Measurement And Associations With Mental Health And Well-Being, Anthony Edward Rose, Timothy B. Smith
Faculty Publications
Religious beliefs influence many behaviors and perspectives relevant to wellbeing and mental health. In Christianity, beliefs about how one attains salvation may be particularly relevant to psychology, but limited scholarship has considered cognitive aspects of religiosity. This study developed and evaluated a new measure of Beliefs about Salvation (BAS) that assesses affirmations of salvation (a) by God’s grace alone and (b) by God’s grace after human repentance/ordinances, as understood by different Christian denominations. We examined the association of the BAS with three measures of mental health and six measures of influences on religiosity. In a sample of 1556 predominantly members …
The Efficacy Of Open Educational Resources On Achievement Outcomes In Different Higher Education Institutions, Angela Grace Findlay
The Efficacy Of Open Educational Resources On Achievement Outcomes In Different Higher Education Institutions, Angela Grace Findlay
Theses and Dissertations
Students suffer from achievement gaps in higher education. Achievement gaps refer to differences in graduation rates, retention rates, persistence rates, and student's grades. Achievement gaps may negatively affect students who are culturally or ethnically diverse and/or have a lower socioeconomic status. The use of open educational resources (OER) may mitigate achievement gaps as OER assists student success through higher academic performance and cost savings for students. Average quiz scores were obtained at different higher education institutions using an Introduction to Psychology OER. The scores from each course were analyzed using hierarchical linear modeling. Colleges were nested by demographics to evaluate …
Compliant Mechanisms For Scalable Systems And Precision Deployment, Jared Rodney Hunter
Compliant Mechanisms For Scalable Systems And Precision Deployment, Jared Rodney Hunter
Theses and Dissertations
Compliant mechanisms offer advantages in precision applications where size, scaling, and environmental effects render traditional mechanisms inadequate or likely to fail. However, designing compliant mechanisms and integrating them into larger, more complex systems remains a challenging problem. This thesis presents work that addresses this issue with analytical models and experiments on flat springs, scalable compliant mechanisms, and origami arrays. Storing and releasing energy in tiny, flat compliant mechanisms opens the door for the design of innovative actuators and products in space-constrained situations. Scaling compliant mechanisms allows novel systems to be made that can operate across scales. By designing for scalability …
Structural Analysis Of The Aileu Metamorphic Complex And The Laclo Fault Of Timor Leste, Banda Arc-Continent Collision, Emma C. Morrison
Structural Analysis Of The Aileu Metamorphic Complex And The Laclo Fault Of Timor Leste, Banda Arc-Continent Collision, Emma C. Morrison
Theses and Dissertations
This study presents a structural analysis of the brittle and ductile features within the Aileu Metamorphic Complex of Timor Leste, located in the active Banda Arc–Australian continental collision zone. The deformation history of the complex is interpreted from the Permian–Jurassic deposition of sediments and basalts into intra-arc basins of Gondwana, through to the present- day collision of the Australian continental margin. This collision led to the development of the Wetar Suture and subsequent back-thrusting of the Aileu metamorphic rocks northward over the Banda forearc. Field evidence confirms that the Laclo Fault is currently active, with the most recent movement exhibiting …
How Transitioning Autistic Adults Consciously Perform Neurotypical Communication, Makenna J. Allred
How Transitioning Autistic Adults Consciously Perform Neurotypical Communication, Makenna J. Allred
Theses and Dissertations
Using semi-structured interviews this research explored the experiences of transitioning autistic adults with online communication. Participants shared information about navigating online communication, highlighting specific challenges such as interpreting tone and sarcasm, managing unspoken social norms, like emoji use, and responding to ambiguous or unexpected interactions. Participants shared that misunderstandings do occur in their online communication and how they recognize those miscommunications and strategize around preventing and mitigating them. These findings reveal that while computer-mediated communication offers opportunities for connection, it also presents unique obstacles that can exacerbate feelings of frustration due to miscommunications or misunderstandings. To prevent these social frictions …
Modeling And Simulation Of Tensegrity Structures With Continuous Cables, Austin R. Brown
Modeling And Simulation Of Tensegrity Structures With Continuous Cables, Austin R. Brown
Theses and Dissertations
This thesis presents a novel approach for modeling and simulating tensegrity structures with continuous cables. A Python-based simulation framework package was developed to address limitations in existing tensegrity modeling software, particularly the inability to model cables passing through multiple nodes. The framework utilizes virtual work methods to solve for equilibrium configurations of 2D, 2.5D and 3D tensegrity systems. Key features include: • A YAML-based input system for easy definition of tensegrity topologies. • Algorithms for handling continuous cables spanning multiple nodes. • Optimization techniques to find stable equilibrium states. • Capability to simulate 2.5D structures wrapped around cylindrical surfaces. • …
Exploring The Feasibility Of Using Virtual Reality With Children With Autism, Gemma Leighton
Exploring The Feasibility Of Using Virtual Reality With Children With Autism, Gemma Leighton
Theses and Dissertations
This study explored the feasibility and social validity of teenagers with autism spectrum disorder (ASD) using a virtual reality (VR) head-mounted display (HMD). VR is emerging as a promising tool for teaching and therapeutic intervention among ASD. Therefore, this study serves to contribute to the field's development by comprehensively evaluating the accessibility for young people with ASD to independently using a VR HMD in a meaningful way. Five teenagers participated (four female, aged 13-15, with mild and mild to moderate support needs) and independently completed tutorials in a virtual environment when learning to operate the VR HMD controllers and hand-tracking …
Semitic Root Encoding: Tokenization Based On The Templatic Morphology Of Semitic Languages In Nmt, Brendan T. Hatch
Semitic Root Encoding: Tokenization Based On The Templatic Morphology Of Semitic Languages In Nmt, Brendan T. Hatch
Theses and Dissertations
The morphological structure of Semitic languages like Arabic and Hebrew is based on non-concatenative roots and templates. This complex word structure used by humans is obscured to neural models that use traditional tokenization algorithms. In this work, I present and evaluate Semitic Root Encoding (SRE), a tokenization method that represents Semitic words with distinct root and template stem tokens, and apply it to neural machine translation (NMT). I evaluate whether tokenization with the SRE method leads to increases in translation quality, whether it allows NMT models to hypothesize unseen word forms needed at inference, and how impervious resulting NMT models …
Across Generations Of Time: Institutional Memory And Individual Memory Of The Kwangju Uprising Regarding The Hong Family, Seung Hong
Undergraduate Honors Theses
On May 18, 1980, the Kwangju Uprising took place in Kwangju, a city in the Chŏlla province of South Korea. Though it was initially a student demonstration against Chun Doo Hwan’s martial law, it grew to involve thousands of Kwangju civilians who united to fight against vicious paratroopers and Chun’s unjust rule. After nine days, state troops recaptured Kwangju and arrested the remaining demonstrators. Years later, as a response to popular demand, the South Korean government compensated victims and began celebrating May 18 as a turning point for democracy in the nation. The institutional memory of the Kwangju Uprising has …
Building And Demonstrating A Framework And Guide For Human-Centered Threat Modeling, Warda Usman
Building And Demonstrating A Framework And Guide For Human-Centered Threat Modeling, Warda Usman
Theses and Dissertations
As researchers increasingly seek to understand threats faced by people rather than systems, there remains little consensus on how to study these threats in ways that are grounded in human experience. Traditional approaches to threat modeling are often designed for system vulnerabilities and offer limited guidance for eliciting or analyzing threats as understood by individuals in their social and cultural contexts. This dissertation addresses this gap by advancing human-centered threat modeling (HCTM) in security and privacy research as both a conceptual framework and through a set of empirical studies. The dissertation employs a mixed set of qualitative methods across four …