Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 249811 - 249840 of 5161292

Full-Text Articles in Entire DC Network

Distinguishing Pearls From Fish Eyes: The Branch Lineage Genealogies Of The Descendants Of Confucius, Christopher Agnew Jan 2025

Distinguishing Pearls From Fish Eyes: The Branch Lineage Genealogies Of The Descendants Of Confucius, Christopher Agnew

Books and Book Chapters by University of Dayton Faculty

This paper examines the form and production of genealogies compiled by local branch-lineages of the descendants of Confucius, the Kongs. It highlights the way the Kongs in Qufu, the hometown of Confucius and the center of Kong power, exercised control over branch-lineage formation through the collection and approval of written genealogies. The paper pays particular attention to the crucial function of manuscripts in the compilation, drafting, and circulation of genealogical knowledge. Depending on the relationship between branch-lineages and the Kong ducal center, manuscript genealogies adopted different forms, either to align with norms established in Qufu, or to articulate alternative lineage …


Chemical Compositions Of Initial And Residual Silicate Source Glasses From Degassing Experiments: Implications For Mars, Natalie Zimmermann Jan 2025

Chemical Compositions Of Initial And Residual Silicate Source Glasses From Degassing Experiments: Implications For Mars, Natalie Zimmermann

Geosciences Research Data

These files contain supporting data for the JGR manuscript Trace Element Transport and Deposition during Magmatic Degassing: The Effect on Martian Rocks and Fines. They report the chemical compositions (major oxides and volatiles) of initial and residual silicate source glasses from degassing and vapor-transport experiments. Composition (wt%) of major oxides calculated from EMPA (renormalized on a volatile-free basis); Cl and SO2 from EMPA (wt% based on total of oxides+Cl+SO2); wt% H2O calculated from micro-FTIR. Files include the raw EMPA and FTIR data, processing, and calculations used to obtain the chemical compositions presented in Table 5 of the manuscript.


Sem Images And Eds Spectra Of Vapor Deposited Phases, Natalie Zimmermann Jan 2025

Sem Images And Eds Spectra Of Vapor Deposited Phases, Natalie Zimmermann

Geosciences Research Data

This file contains supplemental data for the JGR manuscript Trace Element Transport and Deposition during Magmatic Degassing: The Effect on Martian Rocks and Fines (Zimmermann et al., in review). It includes SEM images and associated EDS spectra of vapor deposited phases produced in experiments.


Damping Modulation Of Dampened Kapton Surfaces, Sebastian Esteban Jan 2025

Damping Modulation Of Dampened Kapton Surfaces, Sebastian Esteban

Honors Undergraduate Theses

When droplets are vibrated or disturbed, they can exhibit a complex sloshing motion, an understudied behavior in drop physics. Droplet sloshing involves a complex combination of transverse and longitudinal motion that changes the droplet's effective weight on the surface the droplet is on. Our current understanding stems from preliminary work focusing on a cantilever beam of fixed thickness and variable viscosity of the liquid being sloshed. This investigation will focus on how variable cantilever thickness and constant viscosity for a liquid being sloshed affects the beam's deflection under consistent vibration. It will also investigate how the natural frequency of a …


Integrated Compliant Structure For A Hand Exoskeleton, Tristan R. Koopman Jan 2025

Integrated Compliant Structure For A Hand Exoskeleton, Tristan R. Koopman

Honors Undergraduate Theses

This thesis presents the design and prototyping of a wearable hand exoskeleton that integrates a flexible structural framework to assist with hand movement while maintaining comfort and anatomical conformity. The goal was to create a device that supports tendon-driven actuation through a compliant structure, combining elements of rigidity and flexibility to match the natural geometry and motion of the human hand. Traditional hand exoskeletons often trade off motion for structure or vice versa. This project aims to bridge that gap with a hybrid compliant design that balances flexibility and support. The design process followed an iterative approach involving rapid prototyping …


Fabricating Silver-Ceria Polymer Nanocomposite Scaffolds For Biomedical Therapeutic Applications, Shreya S. Pawar Jan 2025

Fabricating Silver-Ceria Polymer Nanocomposite Scaffolds For Biomedical Therapeutic Applications, Shreya S. Pawar

Honors Undergraduate Theses

Improper healing of bone fractures and limited regeneration of bone following bone tumor resection remain a prevalent complication worldwide. Long-term effects of this include joint instability, limited movement, and arthritis. Bone infections (osteomyelitis), reactive oxygen species (ROS) generation via excessive inflammation, and underlying conditions such as osteoporosis can contribute to suboptimal bone tissue regeneration. ROS accumulation stimulates osteoblast apoptosis, while promoting osteoclast differentiation. These processes inhibit mineralization and osteogenesis. Conventional therapeutics involve the utilization of drugs and bone grafts. However, these approaches pose limitations and can result in subsequent complications. Microbial infections, ROS accumulation, and excessive inflammations are factors that …


High-Performance Computational Kernels For Algorithm-System Co-Design In Machine Learning: Enabling Efficient Gcn Training And Llm Inference Serving., Shakya D. Jayakody Arachchige Jan 2025

High-Performance Computational Kernels For Algorithm-System Co-Design In Machine Learning: Enabling Efficient Gcn Training And Llm Inference Serving., Shakya D. Jayakody Arachchige

Graduate Thesis and Dissertation post-2024

The rapid advancement of machine learning, from Graph Convolutional Networks (GCNs) to transformer-based Large Language Models (LLMs), continues to expose fundamental limitations in memory efficiency, scalability, and system reliability. GCNs are critical for domains such as biomedical modeling, social networks, and recommendation systems, yet their reliance on sparse general matrix–matrix multiplication (SpGEMM) makes them highly sensitive to GPU memory constraints and irregular access patterns. As graph data scales, out-of-core computation becomes inevitable, but existing systems are hindered by I/O bottlenecks and underutilized GPU resources. Our contribution with AIRES demonstrates how algorithm–system co-design can alleviate these challenges: by introducing block-wise data …


Development Of Generalizable Data-Driven Traffic State Prediction Solutions: A Comprehensive Approach, Md Mobasshir Rashid Jan 2025

Development Of Generalizable Data-Driven Traffic State Prediction Solutions: A Comprehensive Approach, Md Mobasshir Rashid

Graduate Thesis and Dissertation post-2024

Increased urbanization and population growth lead to more traffic in the transportation system, causing severe congestion. Particularly during disruptive events such as hurricanes or traffic incidents, the traffic flow in the network worsens significantly. As a result, there is a need for data-driven traffic prediction models to reduce congestion in real-time, and the prediction model should be generalizable to be applicable across different dynamic scenarios. Additionally, a robust and adaptable traffic prediction model can help traffic managers to take proactive actions to optimize traffic flow. However, the majority of data-driven traffic prediction models suffer from limited applicability as they are …


Novel Nanomaterial-Based Platforms For Bio-Electrochemical Sensing And Photocatalytic Treatment Of Contaminants Of Emerging Concern In Water, Jonghyun Baik Jan 2025

Novel Nanomaterial-Based Platforms For Bio-Electrochemical Sensing And Photocatalytic Treatment Of Contaminants Of Emerging Concern In Water, Jonghyun Baik

Graduate Thesis and Dissertation post-2024

This dissertation presents the development of novel nanomaterial-based platforms for bio-electrochemical sensing and photocatalytic treatment of contaminants of emerging concern (CECs) in water, including heavy metals, polycyclic aromatic hydrocarbons (PAHs), per- and polyfluoroalkyl substances (PFAS), and microcystin toxins. Conventional detection and remediation methods are often costly, time-consuming, and impractical for field use. To overcome these limitations, in this dissertation, five distinct platforms were designed, developed, and evaluated under various water conditions.

First, a microbial fuel cell (MFC)-based biosensor was developed for detecting heavy metals (Cu2+ and Hg2+) and PAHs (benzene and xylene). The system exhibited rapid, linear …


Assessment Of The Safety Culture In Petrochemical Industries In Saudi Arabia: A Cross-Sectional Study, Ahmed Mohammed Alqarfi Jan 2025

Assessment Of The Safety Culture In Petrochemical Industries In Saudi Arabia: A Cross-Sectional Study, Ahmed Mohammed Alqarfi

Graduate Thesis and Dissertation post-2024

Given the inherently hazardous nature of petrochemical operations, an effective safety culture is critical. Following PRISMA 2020 guidelines, 29 peer-reviewed articles published in open access between 2014 and 2024 were selected to evaluate the status of safety culture dimensions employed in the petrochemical sector. This cross-sectional study assessed safety culture in the Saudi Arabian petrochemical industry and examined the relationships among safety culture dimensions, safety motivation (SM), and safety performance. Safety performance was operationalized as personal error behavior (PEB) and attitudes toward violations (ATV), with SM modeled as a mediating factor. After obtaining IRB approval, a total of 482 employees …


Quantifying Surrogate Safety Measures And Traffic Delays At Mid-Block Pedestrian Crossings Using Video-Based Data Analytics, Md Jamil Ahsan Jan 2025

Quantifying Surrogate Safety Measures And Traffic Delays At Mid-Block Pedestrian Crossings Using Video-Based Data Analytics, Md Jamil Ahsan

Graduate Thesis and Dissertation post-2024

This study presents a comprehensive evaluation of midblock pedestrian crossings in terms of safety and traffic efficiency, with a particular focus on the newly implemented Mid-Block Pedestrian Signal (MPS) systems. Extensive CCTV video data were collected across Florida and processed using advanced computer vision techniques, specifically the RT-DETR model for object detection and the ByteTrack algorithm for object tracking, to analyze vehicle-pedestrian interactions in detail. Since there is limited post-implementation crash data available for all locations, Surrogate Safety Measures (SSMs) were employed to assess safety outcomes. Conflict Modification Factors (CoMFs) were estimated using Cross-Sectional (CS), Comparison Group (CG), and Empirical …


Development Of A Data-Driven Decision Support System For Intelligent Traffic Management At Intersections, B M Tazbiul Hassan Anik Jan 2025

Development Of A Data-Driven Decision Support System For Intelligent Traffic Management At Intersections, B M Tazbiul Hassan Anik

Graduate Thesis and Dissertation post-2024

Intersections are complex traffic environments where frequent vehicle and pedestrian interactions can lead to safety- and mobility-critical (SMC) conditions. Identifying these conditions promptly is crucial, as delays may result in missed interventions, thereby heightening crash risk, and diminishing operational efficiency. This dissertation introduces a data-driven, real-time decision support framework for the identification and mitigation of SMC conditions using High-Resolution Traffic Controller Data (HTCD) collected via Automated Traffic Signal Performance Measures (ATSPM) system and Connected Vehicle (CV) data from Signal Analytics. First, an end-to-end analytical pipeline was developed to transform HTCD into actionable safety and mobility measures. A Bayesian beta-binomial framework, …


Exploring The Effect Of Personal Mental Health Disclosures On Perceptions Of Doctoral Psychology Applicants, Hunter C. Schow Jan 2025

Exploring The Effect Of Personal Mental Health Disclosures On Perceptions Of Doctoral Psychology Applicants, Hunter C. Schow

Doctor of Psychology (PsyD)

While some research exists discussing the attitudes around personal mental health disclosures as they pertain to both professional decorum and admission to doctoral psychology training programs, little research has analyzed the actual impact of such disclosures on how applicants are perceived. This study aimed to assess whether personal mental health disclosures in admissions essays ultimately affect how applicants are perceived by doctoral faculty determining whether or not to admit them to their program. The hypothesis was that ambiguous disclosures do have an impact, and especially those showing unaddressed or ongoing struggles. An electronic survey utilizing a mixed-methods approach was distributed …


Reducing Burnout In Healthcare Professional Training Programs, Michaela Lillie Jan 2025

Reducing Burnout In Healthcare Professional Training Programs, Michaela Lillie

Doctor of Psychology (PsyD)

There is an immense need for behavioral health clinicians in the United States, with an estimated 43.4 million people having behavioral concerns in 2015. An estimated 37% of counties in the United States are facing a shortage of behavioral health workers, which means many people are going without treatment. It also means caseloads will be elevated for current behavioral health clinicians. Research consistently shows that these workers face high burnout rates every year. Though burnout is typically studied at the organizational level, there are elevated rates of burnout at the academic training level. Because research has focused on the organization …


Creating The I-Ace: A Revised Ace Measure Incorporating Perceived Impact And Broader Adversity Experiences, Katherine M. Adams Jan 2025

Creating The I-Ace: A Revised Ace Measure Incorporating Perceived Impact And Broader Adversity Experiences, Katherine M. Adams

Doctor of Psychology (PsyD)

The Adverse Childhood Experiences (ACE) survey is a widely used, evidence-based tool that assesses the number of adverse events an individual experienced before the age of 18 years. Research has shown that total ACE scores are associated with physical and mental health outcomes across the lifespan. The original ACE survey—often referred to as the conventional, standard, or primary version—consists of 10 items measuring adverse experiences across categories of abuse, neglect, and household dysfunction. However, it does not fully capture experiences that are increasingly relevant when assessing childhood adversity and trauma, particularly among historically marginalized minority and socio-economic populations. One area …


A Psychometric Investigation Of The Consumption Of Pornography Scale (Cops-G) In Undergraduate Students At A Private Christian University, Liberty Jedidiah Lillibridge Jan 2025

A Psychometric Investigation Of The Consumption Of Pornography Scale (Cops-G) In Undergraduate Students At A Private Christian University, Liberty Jedidiah Lillibridge

Doctor of Psychology (PsyD)

Pornography is a multidimensional and complex topic that provokes feelings of shame, curiosity, and anxiety. In recent times, pornographic searches on the internet amounted to 25% of total search engine requests (Cooper et al., 2000). In a Canadian study on college students’ problematic pornography use, a higher level of pornography use was associated with negative psychosocial functioning and maladaptive use of cannabis, alcohol, gambling, and video games (Harper & Hodgins, 2016). Many researchers have attempted to mitigate the inconsistent measurement of pornography usage (Mckee et al., 2020; Short et al., 2012). Hatch et al. (2020) addressed these measurement issues and …


Self-Compassion And Shame: The Role Of Socioeconomic Status, Amanda Louie Jan 2025

Self-Compassion And Shame: The Role Of Socioeconomic Status, Amanda Louie

Doctor of Psychology (PsyD)

Undergraduate student mental health concerns are a growing issue on a global scale. One proposed intervention to support student well-being is to increase student self-compassion. Previous research has found that self-compassion can decrease negative affect and shame, and improve well-being and resilience, which in turn may reduce stress. A lesser area of study concerning self-compassion is what effect, if any, socioeconomic status may have on the development of self-compassion in individuals. To address this gap in the literature, this study collected data from college students on the West Coast and used a correlational design to explore the relationships between self-compassion, …


Utilization Of Assessment Results To Improve Identification Of Prenatal Substance Exposure, Whitney R. Mendenhall Jan 2025

Utilization Of Assessment Results To Improve Identification Of Prenatal Substance Exposure, Whitney R. Mendenhall

Doctor of Psychology (PsyD)

Prenatal substance exposure (PSE) significantly increases the risk of behavioral, emotional, and neurological challenges in children (Eiden et al., 2023). Children with PSE present similarly to children with attention deficit hyperactivity disorder (ADHD) and are often diagnosed with ADHD due to shared symptomatology (Garrison-Desany et al., 2022). However, PSE has a greater association with long-term cognitive, emotional, social, and behavioral deficits (Eiden et al., 2023). While PSE and ADHD share similar symptomologies, treatment and outcomes vary substantially, where early identification and treatment is a critical protective factor against the development of other psychological conditions in children with PSE. PSE can …


Exploring The Relationship Between Individual Value Priorities And Pathological Psychological Traits, Dennis Kurtz Jan 2025

Exploring The Relationship Between Individual Value Priorities And Pathological Psychological Traits, Dennis Kurtz

Doctor of Psychology (PsyD)

Values are central to the ways that humans evaluate the world and make decisions, and they play an important role in individual psychological functioning and well-being. Although human values are frequently used in psycho-therapeutic interventions in clinical practice, the precise nature of their relationship to psychopathology is unclear. This research explored the relationship between human values and psychopathology using the Schwartz basic theory of human values and the Minnesota Multiphasic Personality Inventory–3. Participants were recruited from a community mental health clinic. Data were analyzed to determine relationships between value priorities and clinical scales.

The study hypothesized positive associations between self-enhancement …


Sport-Related Concussions In Division Iii Athletes: A 10-Year Prospective Analysis Of Trends And Incidence, Shaylyn R. Thorne Jan 2025

Sport-Related Concussions In Division Iii Athletes: A 10-Year Prospective Analysis Of Trends And Incidence, Shaylyn R. Thorne

Doctor of Psychology (PsyD)

Sports-related concussions (SRCs) among college athletes remain a growing area of concern due to a myriad of potential short and long-term implications. Understanding concussion trends and incidence in collegiate sports is critical for guiding prevention and management strategies. This study examined concussion injuries among NCAA Division III collegiate athletes at a single institution over a 10-year period. Analyses focused on trends in concussion incidence across sports, genders, and changes associated with institutional and NCAA policy updates. Results indicated that concussion incidence varied across sports and time, with higher rates in contact sports such as football and soccer. Significant differences occurred …


Small Ripple, Big Waves: Individual Political Attitudes, Populism, Illiberalism And Democratic Resilience, Paulo Ricardo Valle Jan 2025

Small Ripple, Big Waves: Individual Political Attitudes, Populism, Illiberalism And Democratic Resilience, Paulo Ricardo Valle

Graduate Thesis and Dissertation post-2024

Why do individuals who support democracy also endorse populist and illiberal attitudes? Current literature focuses efforts on exploring the role that institutions and political actors have in democracy resilience (Levitsky & Ziblatt, 2019; Merkel & Lührmann, 2021). However, relatively few academic works have examined this phenomenon at the individual level. With the aim to exploring the causal effect between individual political attitudes, anti-democratic threats, and democratic resilience at the individual level, this study applies a micro-level theoretical approach to assess how individuals’ political attitudes toward populism and illiberalism affect their support for democratic values. To test the hypotheses, this study …


Multi-Trait Convergent Evolution Correlated With Host Ecology Suggests Trait Syndromes In Parasitoid Wasps (Hymenoptera: Braconidae)., Christina L. Watkins Jan 2025

Multi-Trait Convergent Evolution Correlated With Host Ecology Suggests Trait Syndromes In Parasitoid Wasps (Hymenoptera: Braconidae)., Christina L. Watkins

Graduate Thesis and Dissertation post-2024

Convergent evolution, the independent evolution of similar traits in different lineages under shared ecological pressures, provides information on patterns of adaptation and character evolution. In Braconidae (Hymenoptera), a diverse and abundant parasitoid wasp family, the assorted biological and ecological traits of their insect hosts have been frequently hypothesized to drive repeated morphological evolution. This study presented the first family-wide phylogenetically informed test of host-driven convergence in Braconidae, integrating morphological and ecological data across 74 genera representing 32 subfamilies on the most current and robust phylogeny. Analyses revealed multiple instances of correlated evolution between host traits and parasitoid morphology, suggesting trait …


An Ailment I Will Fight With: Differential Diagnosis And Methodology Evaluation Of Possible Treponemal Infection At Dayr Al-Barsha, Egypt, Lindsey D. Lefebvre Jan 2025

An Ailment I Will Fight With: Differential Diagnosis And Methodology Evaluation Of Possible Treponemal Infection At Dayr Al-Barsha, Egypt, Lindsey D. Lefebvre

Graduate Thesis and Dissertation post-2024

Treponemal diseases, including bejel, yaws, pinta, and venereal syphilis, have long plagued human populations and continue to pose public health challenges today. Despite their persistent global presence, the origins, transmission pathways, and archaeological identification of these diseases—caused by various subspecies of Treponema pallidum—remain contested. This study explores the utility of standardized diagnostic criteria, as proposed by Baker et al. (2020), in assessing the presence of treponemal disease in highly fragmentary skeletal remains from the Roman-period necropolis at Dayr al Barsha, Egypt. Through the examination of 14 individuals, this research seeks to (1) identify indicators consistent with bejel (T.p. …


Determining Essential Attributes For Experience And Satisfaction In The Customer 4.0 Era: A Kano Model Approach, Cintia Z. Buffon Jan 2025

Determining Essential Attributes For Experience And Satisfaction In The Customer 4.0 Era: A Kano Model Approach, Cintia Z. Buffon

Graduate Thesis and Dissertation post-2024

The world is constantly changing, with rapid technological advancements and increased digital connectivity shaping daily activities. In this evolving landscape, customers have transformed into what is known as Customer 4.0—a new generation of consumers who expect high levels of personalization, digital engagement, and greater transparency from organizations. These expectations extend to higher education, where students demand more customized learning experiences, interactive content, and digital accessibility. This research investigates engineering students' preferences regarding educational attributes aligned with Customer 4.0 characteristics using the Kano model. While the Kano model has been widely applied across industries, its use in higher education remains limited. …


Investigating The Impacts Of Peer Support And Online Information Seeking In Chronic Pain Online Health Communities, Aaron Necaise Jan 2025

Investigating The Impacts Of Peer Support And Online Information Seeking In Chronic Pain Online Health Communities, Aaron Necaise

Graduate Thesis and Dissertation post-2024

Chronic pain is a highly prevalent medical condition that contributes to intense emotional distress and social isolation in patients. With the growth of social media, online health communities (OHCs) have become a popular resource for patients to learn about their pain and establish social connections with peers. Although there is some evidence suggesting that curated online resources can benefit patient well-being, social media interactions have the potential to propagate medical misinformation and negativity. This dissertation expands upon the Social Communication Model of Pain to examine how interactions within social media-based OHCs impact chronic pain and uncover practical insights into OHC …


Genomic Consequences Of Habitat Fragmentation In The Florida Scrub-Jay: Diversity, Adaptation, And Disease Susceptibility, Maryam Ghoojaei Jan 2025

Genomic Consequences Of Habitat Fragmentation In The Florida Scrub-Jay: Diversity, Adaptation, And Disease Susceptibility, Maryam Ghoojaei

Graduate Thesis and Dissertation post-2024

Habitat fragmentation is a severe threat to biodiversity by reducing population size, gene flow, and adaptive potential, especially in habitat specialists like the Florida Scrub-Jay (Aphelocoma coerulescens). This dissertation integrates whole-genome sequencing and immunogenetics to assess the genomic consequences of habitat fragmentation across three primary Florida Scrub-Jay strongholds: Archbold Biological Station, Ocala National Forest, and Florida’s East Coast. In Chapter 2, I focused on adaptive genetic diversity at the Major Histocompatibility Complex (MHC) class II genes. I characterized MHC allelic richness, evaluated signatures of selection, and examined associations with pathogen infections. Despite population declines, I found moderate MHC diversity, suggesting …


Investigation Of Combustion Properties Of Renewable Biofuel Blends Using A Hot Surface Ignition Assistant Device, Matthew Voigt Jan 2025

Investigation Of Combustion Properties Of Renewable Biofuel Blends Using A Hot Surface Ignition Assistant Device, Matthew Voigt

Graduate Thesis and Dissertation post-2024

With global warming, fuel supply, rising fuel prices, and energy security becoming major concerns for countries around the globe, many countries have been researching methods to reduce carbon emissions. One option being considered is using Bio-derived fuels as a possible alternative to modern jet fuels due to their ability to produce less emissions. However, while they do produce less emissions, they are also characterized by their low cetane numbers resulting in low reactivity requiring more energy to ignite, lower total heat release values, and longer ignition delays leading to engine problems such as knocking and power loss. Ignition assistant devices …


Towards Safe And Reliable Ai Models, Zihang Zou Jan 2025

Towards Safe And Reliable Ai Models, Zihang Zou

Graduate Thesis and Dissertation post-2024

With the rapid advancement of artificial intelligence, its applications have become indispensable in our daily lives. Emerging advanced AI models, from general-purpose Large Language Models (LLMs) such as ChatGPT and Deepseek to domain-specific systems such as autopilot for autonomous vehicles, are changing the way we work and live by increasing efficiency and fostering innovation. However, these advancements also bring significant risks, as they may compromise data ownership or yield unreliable outcomes. In response, we focus on two critical areas: data safety and model reliability. To ensure data safety and promote lawful data processing, we investigate anti-neural watermarking techniques designed to …


Contagion Chronicles: A Spatiotemporal Analysis Of Armed Conflict And Infectious Disease, Devyn Escalanti Jan 2025

Contagion Chronicles: A Spatiotemporal Analysis Of Armed Conflict And Infectious Disease, Devyn Escalanti

Graduate Thesis and Dissertation post-2024

This dissertation examines the relationship between armed conflict and infectious disease transmission through a novel theoretical framework that integrates ecological disturbance and health systems resilience theories into epidemiological contexts. The framework conceptualizes diseases along a continuum from "pulse" to "press." Pulse diseases, like Ebola, are characterized by sudden onset, high mortality, and short-term outbreaks. Press diseases, like HIV, progress gradually with lower mortality and long-term persistence. Grounded in this pulse–press disease typology and ecological and health systems resilience, the theory suggests that the absorptive capacity, adaptive capacity, and resilience of community health workers in conflict areas can influence disease transmission, …


Shock Tube Investigation And Chemical Kinetic Modeling Of Green Propellants For Space Missions, Marley Albright Jan 2025

Shock Tube Investigation And Chemical Kinetic Modeling Of Green Propellants For Space Missions, Marley Albright

Graduate Thesis and Dissertation post-2024

Hydrazine thrusters have been used for decades to land spacecraft on other planets. While its use is common, handling hydrazine is difficult due to its toxicity; this poses a risk to humans during testing and loading the propellant onto a spacecraft. Occupational Safety and Health Administration has limited human exposure to 1 part per million (ppm) of hydrazine per eight-hour workday. Green propellants are promising alternatives because they have lower toxicity but do not sacrifice performance. Green propellant technology has been demonstrated in space and future missions are planned, such as NASA’s Green-Propulson Dual-Mode technology demonstration. At the University of …