Digital Commons Network^™

Survival Models With Background Mortality, Shujie Chen

Theses and Dissertations

In this dissertation, we focus on studying three mixture cure models with background mortality. With the development of treatment, patients may be cured and suffer from other cause of death. The cure model with background mortality can measure the population cure which refers to the patients with comparable mortality with their counterpart in general population. Three types of survival models are investigated, including generalized odds rate (GOR) model, cure model with background mortality for right censoring and interval censoring, and extended illness death model via incorporating “cure” fraction. All methods are validated via comprehensive simulation studies and real data application. …

A Cross-Sectional Analysis Of Infectious Causes Of Congenital Morbidity And Mortality In Central America: Torch, El Salvador, Mary Katherine Lynn

Theses and Dissertations

The primary goal of this dissertation was to understand the prevalence of the most regionally salient TORCH pathogens among a group of perinatal women from a highly vulnerable region of El Salvador at the time of parturition. TORCH pathogens, that cause TORCH congenital syndromes, are classically defined as Toxoplasma gondii, other infectious causes of concern (Zika virus, malaria, human immunodeficiency virus, etc), Rubella virus, Cytomegalovirus(CMV), and Herpes Simplex Viruses. These infections can be passed from mother to fetus through the placenta or other perinatal routes and cause severe maternal and neonatal morbidity and mortality. This dissertation sought to understand perinatal …

Mouth Stuff, Jacob Connor Smith

Theses and Dissertations

The purpose of this thesis is to explore the idea of nuance in culturally oversimplified narratives, including fraught paternal relationships, sexual assault and non-consent dynamics, childhood and young adulthood LGBTQ+ experiences, and everyday life and mental health in the climate crisis. Drawing upon the 20^th century tradition of short poetry and minimalism, this thesis attempts to demonstrate the frustration of post-internet media culture’s fixation on providing a complete account of a complex issue in extremely limited linguistic space. This collection narratively demonstrates a night of insomnia, loneliness, and depression from sunset to sunrise as the speaker recalls various memories …

Reactive End Capped Polybenzimidazole Oligomers For High Temperature Thermosets And Improved Membranes For Electrochemical Devices, Caroline Marie Rohlfing

Theses and Dissertations

Polybenzimidazoles (PBI) are heterocyclic polymers that possess high thermal and oxidative stability. The inherent strength and chemical and thermal stability of PBI make it ideal for use in extreme environments; however, the current processing of PBI molded parts makes the process practically and economically unfavorable. These intrinsic properties make PBIs of particular interest for many industrial applications, varying from fabrics to membrane materials to molded parts. Processing these molded parts is extremely difficult, as the high glass transition temperature and extremely high melting point (>500°C) of PBI result in poor flow properties of PBI resins even at high temperatures. …

Coaching To Success: Moving From A Fixed Mindset To A Growth Mindset Through Positive Motivation, Shannon Dianna Ramirez

Theses and Dissertations

The purpose of this study was to explore my students’ belief perseverance and fixed mindset and help them shift toward self-determination and a growth mindset. Incorporating goal setting, positive intentions, and coachable techniques in my sixth-grade math class, I collected data through an observation journal, student artifacts, and pre and post assessments. I found that goal setting, positive intentions, and coaching techniques enabled students to shift from belief perseverance toward self-determination that will transfer into life outside of the classroom. My findings showed helping students move from a fixed mindset to one of growth is possible but takes time. Creating …

Advancements In Parametric Modal Regression, Qingyang Liu

Theses and Dissertations

This dissertation considers statistical inference methods for parametric modal regression models. In Chapter 1, we motivate the mode as the measure of central tendency instead of the median or the mean with an example. Following the motivational example, we include an overview of existing modal regression models. Later, in the same chapter, we explain advantages of the parametric modal regression models over existing nonparametric modal regression models. In Chapter 2, we address issues in statistical inference brought in by data contaminated with measurement error. With measurement error in covariates, statistical inference methods designed for modal regression models with error-free covariates …

An Exploration Of Perinatal Stress And Associated Mental Health Of Transitioning First-Time Fathers, Timothy Reed Burkhalter

Theses and Dissertations

Becoming a first-time parent is a stage in life that can be full of excitement but also trepidation. Much common knowledge and research focus on the maternal experience. To add to this established knowledge, this phenomenological study will explore the perinatal stress experiences of transitioning first-time fathers in the U.S.

Semantics-Based Data Security Models, Theppatorn Rhujittawiwat

Theses and Dissertations

In this dissertation, we studied how an adversary could attack databases and how the system could prevent or recover from such an attack. Our motivation to improve the current security capabilities of database management systems. We provided better recovery capabilities of database management systems by incorporating data provenance. We also expand our study to express security and privacy needs of data in the Internet of Things (IoT) environments such as a smart home environment. For this, we proposed a stream data security model to theoretically represent the data in the IoT network. We built a dynamic authorization model on our …

High-Performance Wide Bandgap Semiconductor Power Modules Enabled By Advanced Two-Phase Mini-Channel Cooling, Bo Tian

Theses and Dissertations

There is a widespread need for high performance wide bandgap power modules in both commercial and military applications. However, given the rapid advancements of wide bandgap power module technology, conventional cooling solutions have not kept up and do not provide the thermal management performance needed for high power density. Based on the two-phase cooling approach, two-phase microchannels operating at low fluid flow rates with low pressure drops have huge potential in enabling higher power density applications. Several studies have illustrated the potential great advantages of two-phase cooling compared to single-phase cooling in terms of maximum device temperature, spatial thermal distribution …

Deep Learning Based Fault Diagnosis And Prognosis For Bearing, Guangxing Niu

Theses and Dissertations

Rolling element bearings are critical components in industrial rotating machines. Faults and failures of bearings can cause degradation of machine performance or even a catastrophe. Therefore, it is significant work to perform bearing fault diagnosis and prognosis (FDP) reliably and effectively. Diagnosis aims to detect and estimate the fault state of bearing in real-time. Prognosis aims to conduct a long-term prediction to predict the fault evolution and estimate the remaining useful life (RUL) of the bearing.

Deep learning (DL) based FDP methods have become an important branch of bearing FDP methods due to their powerful capabilities in feature automatic learning, …

An Examination Of Inter-Limb Functional Asymmetry After A Fatiguing Bout Of Exercise In High Level Soccer Players, Nestor Urrea

Theses and Dissertations

INTRODUCTION: Inter-limb functional asymmetries greater than 15% have been linked to a greater incidence of injury. Moreover, asymmetries greater than 10% have shown greater risk of injury and worsened sport performance, especially for strength and power capabilities, in athletes of multiple sports. Fatigue and sex are factors that seem to influence injury rates as well as greater asymmetries between limbs. This research project aims to investigate the effects of a fatiguing bout of exercise in strength and power inter-limb functional asymmetries in male and female soccer players. It was hypothesized that strength and power asymmetries are negatively affected after a …

Insidious Ankle Swelling, Catharine Kral, Brian Harvey

Posters

10-year-old female presented to clinic for left heel pain and swelling. She participates in dance for an estimated 8-9 hours a week. Symptoms started four weeks prior to presentation. She does not remember any inciting event, fall, trauma, or other mechanism of injury prior to onset. She says the pain is localized to the lateral aspect of her calcaneus and extending up to her Achilles. She has never seen any bruising, erythema, or skin changes overlaying the swollen region. Family reports she intermittently has a limp. It is most tender to touch or when she bumps her foot on something. …

Strategies For Combatting The Climate Crisis: Policy, Organizing, And Community Resilience, Shannon F. James

Graduate Student Portfolios, Professional Papers, and Capstone Projects

This portfolio synthesizes work I have done throughout graduate school through research and experience. I have had the opportunity to focus the majority of my work on the climate crisis and be involved in work to address this wicked problem. Though detrimental impacts are already being felt, the IPCC reports that humans can still prevent the worst effects of climate change. This is a problem that needs to be addressed on a variety of fronts. My portfolio discusses combating climate change at a federal, state, and community level. It highlights different strategies that will need to be utilized, including policy …

Engl 351: Nineteenth-Century U.S. Literature, Duncan Faherty

Open Educational Resources

This is a syllabus for an OER version of a Nineteenth-Century U.S. Literature undergraduate course.

Outcomes Among Heart Failure Patients Hospitalized For Acute Pulmonary Embolism And Covid-19 Infection: Insight From The National Inpatient Sample, Bruce Adrian Casipit, Sahana Tito, Isaac Ogunmola, Abiodun Idowu, Shivaraj Patil, Kevin Lo, Behnam Bozorgnia

Einstein Health Papers

There is paucity of data regarding the outcomes of hospitalized acute pulmonary embolism (PE) patients with heart failure (HF) and Coronavirus Disease 2019 (COVID-19) infection. We utilized the 2020 National Inpatient Sample (NIS) Database in conducting a retrospective cohort study to investigate the outcomes of hospitalized acute PE patients with HF and COVID-19, looking at its impact on in-hospital mortality, thrombolysis, and thrombectomy utilization as well as hospital length of stay (LOS). A total of 23,413 hospitalized acute PE patients with HF were identified in our study, of which 1.26% (n = 295/23,413) had COVID-19 infection. Utilizing a stepwise survey …

Improving The Thermal Performance And Energy Efficiency Of Buildings By Incorporating Biomass Waste Into Clay Bricks, Mohamed E. Elattar

Architectural Engineering

No abstract provided.

Frequency Of The Rs2015 (T>G) And Rs2241703 (G>A) Polymorphisms In The Mirna-Sirt2 Gene In Type 2 Diabetes Mellitus In Saudi Arabia, Nahla A. Alshaikh, Siddig I. Abdelwahab, Mahmoud M. Habibullah, Ahmed A. Jerah, Mohammed A. Bakri, Yahia A. Kaabi

Saudi Medical Journal

Objectives: To investigate the prevalence of rs2015 (T>G) and rs2241703 (G>A) polymorphisms in the miRNA-SIRT2 gene in Saudi Arabia and their possible associations with type 2 diabetes mellitus (T2DM). Methods: Blood samples were collected from 428 participants from Jazan University Hospital, Jazan, Saudi Arabia between September 2021 and June 2022 and subjected to TaqMan single-nucleotide polymorphisms (SNP) genotyping assay for rs241703 (G>A) and rs2015 (G>T). Genotype frequencies were determined in control (n=217). Results: The A allele of rs2241703 was undetected in our population, and all samples carried the GG genotype. The rs2015 SNP frequency was 29.4% …

Can Moderate Dietary Salt Restriction Help Patients With Hypertension?

Saudi Medical Journal

No abstract provided.

Statement On The Update Of Who’S Working Definitions And Tracking System For Sars-Cov-2 Variants Of Concern And Variants Of Interest

Saudi Medical Journal

No abstract provided.

Borderplex Business Barometer, Volume 7, Number 4, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

Maximising Effectiveness Of Talent Pools Through Mindfulness: An Empirical Investigation In A Multinational Corporation, Tarmo Raudsepp

Dissertations and Theses Collection (Open Access)

Traditional human resource management is looking to identify and develop talent for maximising human capital in a competitive environment with limited resources and negative demographic trends. Attracting, deploying, motivating, developing and retaining talented employees is a corporate norm for meeting organisational goals. Proper human resource processes through rigorous mapping of employees according to the performance-potential matrix allow the grading of employees against peer groups to establish talent pools for development and internal succession planning.

Mindfulness originates from 2,500-year-old Buddhist spiritual practices and has a rare combination of spirituality and science. Eastern perspective originates from Asian traditions focusing on the self-regulation …

Customer Value, Product Repositioning And Supply Chain Strategy: A Case Of Supply Chain Design For Lansea Corporation, Lei Zhang

Dissertations and Theses Collection (Open Access)

With continuous development of Chinese economy, the incomes of Chinese citizens are constantly increasing, leading to dramatical changes of consumer demand patterns, especially in household electric appliances. The analysis of income and household wealth shows that the proportion of the middle-class population is about 20%-30% of the total population, and this proportion is still increasing. Consequently, it seems that consumption is constantly upgrading. This means, on one hand, part of the consumers still focuses on quality and cost, while on the other hand, part of consumers pays more attention on performance and styles. Therefore, it is critical for the manufacturers …

The Effect Of Psychological Distance On Online Advertising: A Case Study Of Video Enrollment Advertisement Of Colleges, Xian He

Dissertations and Theses Collection (Open Access)

Advertising for enrolment through the Internet has become an important means of enrolment promotion in Chinese universities. However, there is currently no clear research conclusion on how to conduct effective advertising, especially on the selection of factors such as promotion time, promotion platform, and promotion targets. Based on the construal level theory, this study investigated the effects of different types of college enrolment advertising on different new media platforms, using different dimensions of psychological distance corresponding to factors such as promotional time and promotional area. The empirical results show that different advertising types do have significant effect differences on different …

Assessing The Total Economic Value Of Parks In Kalamazoo County, Samuel Herman Ayivi

Masters Theses

Urban parks and green spaces have become an important part of the urban ecosystems in recent years, and there is growing evidence on the positive relationship between having green spaces and good health. Indeed, access to urban parks is part of the United Nation’s Sustainable Development goals (Goal 11 target 7). In recent years, these parks and green spaces have become a subject of development pressures because of the inability of planners and researchers to clearly articulate the value of these parks. The Total Economic Value Framework (TEVF) situates resources (Parks and green spaces in this case) in the minds …

Improving Future Vehicle Fuel Economy And Operational Design Domain Through Novel Data Pipelines, Kyle James Carow

Masters Theses

Modern automobiles have greatly advanced in recent years, with technological developments that enhance performance, safety, and comfort. However, there is still much room for improvement. Today’s vehicles are heavily reliant on the combustion of fossil fuels, proven to be harmful for the environment on both a local and global scale. In addition, the safety benefits of autonomous vehicles and advanced driver assistance systems are not yet fully realized due to the limited operational design domain of these technologies. In this research, these needs are addressed through the development of two novel data pipelines. In the first study, a novel methodology …

Equity Audits For Schools Within Restrictive Settings, Matthew Phillp Milanowski

Masters Theses

This project creates a framework and process for conducting facility wide equity audits for schools within juvenile justice and restrictive settings. To accomplish this, an extensive review of existing literature in both the field of education and the field of juvenile justice and existing frameworks and processes were reviewed to create the new framework, Milanowski’s (2023) Facility Wide – Equity Audit Framework, suitable for juvenile justice and restrictive settings. The new framework was then used to guide the development of a process, data collection tool, improvement planning tool, and fidelity instrument to evaluate the implementation of the overall process. This …

Concept Validation: Collecting Composite Samples To Understand The Presence Of Per- And Polyfluoroalkyl Substances (Pfas) In Michigan Forested Areas, Nicole Renee Sanabria

Masters Theses

This research discusses the results of a state-wide study conducted by The Michigan Department of Environment, Great Lakes, and Energy to assess the presence of PFAS in shallow soils of state-owned forested areas in Michigan utilizing a composite sampling method. One sample collected from each of Michigan’s 83 counties reveals the presence of PFAS in all but one sample, with total PFAS concentrations ranging from non-detect to 2.016 μg/kg (dry weight). PFOS is generally detected at the highest concentrations, ranging from non-detect to 0.88 μg/kg, followed by PFBA, with concentrations ranging from non-detect to 0.69 μg/kg, and PFOA, with concentrations …

Music Production And The Creative Process Through The Lens Of Neurodivergence, Blake Fry

University Honors Theses

This thesis explores the creative process behind the composing and production of three pieces of music through the lens of neurodivergence. It covers and synthesizes the material of three relevant books and applies their concepts toward retrospectively analyzing the experiences behind each piece of music. The goal is to make meaningful progress toward better understanding my personal creative process, the challenges that arise, and how best to resolve them. For these reasons this project should prove enlightening to any neurodivergent creatives or anyone struggling with creativity.

Infusion Reaction In Hem/Onc Patients, Children's Mercy Kansas City

Clinical Pathways (Formally Known As Care Process Models)

No abstract provided.

Investigating Chlorate In Water As A Cause Of Chlorate In Milk, Lorna Twomey, D. Gleeson, A. Furey

Physical Sciences Publications

The findings of this laboratory based experiment suggest that waters with increasing total chlorine levels will have increased chlorate levels and should that water come into contact with milk it has the potential to cause chlorate contamination of said milk. This study provides the information needed to design targeted field based experiments that are required to establish the trends and behaviours of chlorate in water when used as part of the cleaning process on dairy farms and its impact on milk residues and is requisite for the betterment of the dairy industry in terms of its understanding of contamination of …