Digital Commons Network^™

Predicting Individualized Treatment Effects Via Random Forests Of Interaction Trees, Annette Pena Franco

Open Access Theses & Dissertations

Abstract Not Available

Analysis Of Bias-Corrected And Exact Estimators For Binomial Generalized Linear Model Parameters, Hamna Hannan

Open Access Theses & Dissertations

Typically, small samples have always been a problem for binomial generalized linear models. Though generalized linear models are widely popular in public health, social sciences etc. In small sample scenarios the non-existence of the maximum likelihood (ML) estimators is very common as well as separation occurs in the data. In logistic regression the maximum likelihood estimates are found to have biased away from origin. My work examines the bias-reduced and exact estimators that have been used to estimate the slope parameters and standard errors of the estimated slope parameters as compared to the traditional ML method.

The present work is …

Quantifying The Characteristic Length Of A Combustor For An Ionic Liquid Monopropellant Thruster, Kimberly Marie Hogge

Open Access Theses & Dissertations

Ionic liquid monopropellants are currently being researched as a promising alternative to hydrazine in propulsion systems. This report presents a flame study that delineates the flame length of the expected decomposition products from an ionic liquid monopropellant. Through these studies, the characteristic length of a combustion chamber will be defined through calculations and empirical correlations. There is limited information on designing a propulsion system for an ionic liquid monopropellant. Therefore, defining the magnitude for an effective characteristic length serves as beneficial in designing a propulsion system for an ionic liquid monopropellant thruster.

Ac Susceptibility And Epr Investigations Of Superspin Dynamics In Manganese Oxide Nanoparticles, Mahesh Koirala

Open Access Theses & Dissertations

We have investigated the superspin dynamics of 5 nm and 10 nm mixed state Mn3O4 nanoparticles utilizing ac-susceptibility and electron paramagnetic resonance measurements. The out of phase component of the ac-susceptibility measurements show a magnetic anomaly below (T

Cost-Effective Recovery Of Concentrated Cooling Tower Blowdown Using The Cerro Process, Lindsey Nicole Larson

Open Access Theses & Dissertations

The Concentrate Enhanced Recovery Reverse Osmosis (CERRO) process is a seawater-RO unit that can cost-effectively achieve extremely high recoveries from water high in silica, carbonate and sulfate concentrations. This relatively new technology takes advantage of the induction time of potential foulants to recover more water than what is normally achievable with a conventional desalination system. The scope of the project was to evaluate the efficiency of the CERRO process as a pilot study using cooling tower blowdown which varied in water quality parameters daily. It was found that the CERRO pilot could successfully achieve 85% recovery, and the main limitation …

Gypsum, Calcite, And Dolomite Caprock Fabrics And Geochemistry From The Gypsum Valley Salt Diapir, Paradox Basin, Southwestern Colorado, Kevin Lerer

Open Access Theses & Dissertations

Caprocks are found on top of or in a lateral position relative to salt diapirs. The caprocks predominantly comprise sulfate minerals such as anhydrite or gypsum, which presumably accreted during the dissolution of salt from evaporite sediments. In some cases, the sulfate minerals are replaced by carbonate minerals, referred to as "carbonate caprock". Carbonate caprocks associated with salt diapirs are important because they can act as reservoirs or conduits for hydrocarbons, and because they can be easily misidentified as carbonate lithologies belonging to the stratigraphy of the sedimentary sequences adjacent to the diapir, which can jeopardize the accurate interpretation of …

Evaluation Of A Gender-Relevant Physical Activity After-School Program, Vianay Lopez

Open Access Theses & Dissertations

Background: Physical activity rates have decreased in the past 30 years. Physical activity rates decline further among girls as they reach adolescence, yet studies suggest girls are more inclined to participate in moderate-to-vigorous physical activity (MVPA) while among peers. When in close social networks, girls who have more physically active friends report being more active themselves. Several mentor-based programs throughout the United States have increased physical activity among preadolescent girls, indicating that gender-relevant physical activity programs may reverse their declining rates of physical activity.

Purpose: To evaluate if participation in a gender-relevant physical activity after-school program influenced participants' aerobic fitness, …

Agent Of Social Capital: An Autoethnographic Study Of A First Time Superintendent, Juan I. Martinez

Open Access Theses & Dissertations

This autoethnography analyzes how my experiences growing up on the Mexico-United States border influenced my superintendency. My particular focus was on my role as an agent of social capital for all students, including low-socioeconomic, at-risk and minority students. Collectively, over fifty percent of school-aged children in the United States are now from a minority ethnic group, of which Hispanic/Latino students constitute the vast majority. Research on academically successful minority students suggests that the social capital students receive from institutional agents at school expands opportunities for academic and lifelong success. Traditionally, however, institutional agents are teachers, counselors, and social workers, not …

Arak And Other Stories, Fatima Sausan Masoud

Open Access Theses & Dissertations

Set in the West Bank, Arak and Other Stories follows the lives of members of the Al-Hakim family. Through the stories, Palestinian-American, Layla Al-Hakim, uncovers long buried family secrets and discovers deep connections to her Palestinian cousins.

Airborne Lead In El Paso, Texas, Usa, Lisa Marie Paz

Open Access Theses & Dissertations

Despite significant strides to minimize lead in our air, water, soil, food, homes, workplaces, and consumer products, sporadic and systemic lead poisoning persists in industrial societies, e.g., the contemporary Flint (Michigan, USA) municipal water tragedy. Because lead exposure is cumulative, the sum of exposure from all sources, it is important to document and update potential community or neighborhood exposure levels from such environmental compartments as air, water, and housing. Here we present ambient airborne lead levels in El Paso, Texas, USA, parsed by particulate matter (PM) size fraction, geography, and season. Dichotomous samplers at 8 stations collected particulate matter continuously …

Analysing The Effects Of Data Augmentation And Free Parameters For Text Classification With Recurrent Convolutional Neural Networks, Jonathan Quijas

Open Access Theses & Dissertations

Convolutional neural networks have seen much success in computer vision and natural language processing tasks. When training convolutional neural networks for text classification tasks, a common technique is to transform an input sequence of words into a dense matrix of word embeddings, or words represented as dense vectors, using table lookup operations. This enables the inputs to be represented in a way that the well-known convolution/pooling operations can be applied to them in a manner similar to images. These word embeddings may be further incorporated into the neural network itself as a trainable layer to allow fine-tuning, usually leading to …

Describing Data And Workflow Provenance Using Design Patterns And Controlled Vocabularies, Smriti Rajkarnikar Tamrakar

Open Access Theses & Dissertations

In any scientific experiment, researchers are required to access, compute, and analyze data to produce useful information to the scientific community. In order to instill trust on such scientific research products, the product users need to understand the procedure applied and the assumptions incorporated. The reuse and replication of reliable scientific data need methods that help the users to understand data origin and the derivation process, i.e. provenance. Although several standards for representing provenance such as PROV model (a W3C recommendation) have been recommended, they have not been widely utilized by scientific communities due to difficulty in aligning such recommended …

Career And Technical Education And Its Relationship To Engineering Technology Pathways In Marine Mechatronics, Vukica M. Jovanovic, Otilia Popescu, Petros Katsioloudis, Ana M. Djuric, Mileta M. Tomovic, Thomas Stout, Roger R. Lagesse

Engineering Technology Faculty Publications

Students coming from families with low household incomes often cannot afford to rely on a regular pathway from high school to the university because of college tuition rates. Other students might not seek out available opportunities in their guidance counselors' offices to learn about existing scholarships or learn about different engineering technology or engineering careers. There are also students, who realize that a four-year university degree is not always necessary to find a career that matches their skills and talents. They may also have another educational path to receive a technician, engineering technology, or engineering degree, such as technical or …

Learning Styles Of Students Enrolled In Fashion Classes: Academic Level, Geographic Region, And Major, Harrison Qiu, Diana Saiki, Alyssa Dana Adomaitis

Publications and Research

No abstract provided.

An Examination Of "Lookism" In Scholarly Literature, Diana Saiki, Alyssa Dana Adomaitis, Gundlach Jessica

Publications and Research

No abstract provided.

Performance Degradation Analysis Of Aviation Hydraulic Piston Pump Based On Mixed Wear Theory, C. Zhang, S. Wang, M. Tomovic, L. Han

Engineering Technology Faculty Publications

This paper focuses on the mathematical modeling of axial piston pump through dividing the failure development of friction pair into lubrication, mixed lubrication and abrasion. Directing to the wedge-shaped oil film between cylinder block and valve plate, the support force distribution under the temperature variance was obtained. Considering the rough peak of valve plate, the contact load model is built under plastic deformation and elastic deformation and the corresponding wear volume is calculated. Computing the wear and tear along the counter-clockwise, the total amount of friction and wear can be calculated. Simulation and preliminary wear particle monitoring test indicates that …

Mechanisms For Cross-Scaling, Flexibility And Social Learning In Building Resilience To Sea Level Rise: Case Study Of Hampton Roads, Virginia, Carol Considine, Michelle Covi, Juita-Elena (Wie) Yusuf

Engineering Technology Faculty Publications

This case study examines how the Hampton Roads Sea Level Rise Preparedness and Resilience Intergovernmental Planning Pilot Project, a whole-of-government and whole-of-community approach to planning for and adapting to sea level rise, addressed coastal resilience in a southeastern Virginia watershed that spans multiple jurisdictions. Meeting the challenge of sea level rise requires that actors across multiple sectors—citizens, community organizations, industry and government—understand the risks and work together to make critical decisions regarding adaptation strategies and actions. The case study area includes Little Creek Amphibious Base, which is bordered by the cities of Norfolk and Virginia Beach. Adaptation responses to sea …

Report Card On Sustainable Natural Resource Use In The Rangelands: Status And Trend In The Pastoral Rangelands Of Western Australia, Department Of Agriculture And Food, Western Australia

Books & book chapters

This report card provides a regional overview of the status and trend of the natural resource base of the pastoral rangelands in Western Australia (WA). It covers the pastoral lease areas of the 2.2 million square kilometres of rangelands in WA (87% of the state). Pastoral leases cover 857 833km² or 40% of the rangelands, based on active leases as at June 2016.

The drivers of change in the rangelands — seasonal quality, grazing pressure and fire — interact and their effect is expressed in the condition and trends of natural resources used in pastoralism. The natural resource themes …

An Analysis Of 2013 Program Evaluation Proposals For The School Leadership Preparation Program, Karen Sanzo

Educational Leadership & Workforce Development Faculty Publications

This article presents a content analysis of the 2013 School Leadership Program (SLP) grants. SLP projects provide a unique opportunity for participants in the field to explore innovative leadership preparation and development and their impact on program participants, schools, school districts, and students. The article begins with an overview of the SLP, the changing field of leadership preparation, and current research in the field. Findings then reveal a range of evaluation tools, methods, and data, the presence of myriad evaluators participating in the projects, and little focus on external dissemination of program evaluation methods beyond the scope of the projects. …

Contextual Factors Related To Stereotype Threat And Student Success In Science Technology Engineering Mathematics Education: A Mixed Methods Study, Lindsey Leker

Theses and Dissertations

Stereotype threat is a widely researched phenomenon shown to impact performance in testing and evaluation situations (Katz, Roberts, & Robinson, 1965; Steele & Aronson, 1995). When related to gender, stereotype threat can lead women to score lower than men on standardized math exams (Spencer, Steele, & Quinn, 1999). Stereotype threat may be one reason women have lower enrollment in most science, technology, engineering, and mathematics (STEM) majors, hold a smaller number of STEM careers than men, and have a higher attrition rate in STEM professions (Hill, Corbet, & Rose, 2010; Picho & Brown 2011; Sorby & Baartmans, 2000). Most research …

Can Money Illusion Effect Explain Hong Kong Housing Market?, Stephanie Ho

Theses and Dissertations

This paper studies if the Hong Kong housing market from 1993:Q1 to 2016:Q2 can be explained by money illusion. When people suffer from money illusion, a drop in inflation can lead to a high increase in housing prices since they mistakenly believe that inflation lowers the real interest rate, and the future fixed nominal mortgage payments in the real cost are underestimated. Unlike the supportive evidence of money illusion on the UK housing market found by Brunnermeier and Julliard (2007), no empirical link was found between inflation and the estimated mispricing term (implied irrational component) of the price-rent ratio in …

Firearms In The Family, Carolyn B. Ramsey

Publications

This Article considers firearms prohibitions for domestic violence offenders, in light of recent Supreme Court decisions and the larger, national debate about gun control. Unlike other scholarship in the area, it confronts the costs of ratcheting up the scope and enforcement of such firearms bans and argues that the politicization of safety has come at the expense of a sound approach to gun control in the context of intimate-partner abuse. In doing so, it expands scholarly arguments against mandatory, one-size-fits-all criminal justice responses to domestic violence in a direction that other critics have been reluctant to go, perhaps because of …

The Impact Of Wal-Mart V. Dukes On Employment Discrimination Class Actions Five Years Out: A Forecast That Suggests More Of A Wave Than A Tsunami, Suzette M. Malveaux

Publications

No abstract provided.

A Prescription For Overcoming Gender Inequity In Complex Litigation: An Idea Whose Time Has Come, Suzette M. Malveaux

Publications

No abstract provided.

Employers' Duties Of Honesty And Accuracy, Helen Norton

Publications

This short essay is a contribution to the Labor Law Group's chapter-by-chapter critique and analysis of the American Law Institute's effort to restate the common law of employment through its 2015 Restatement of Employment Law. This essay focuses specifically on sections 6.05 and 6.06 of the Restatement, which address employers’ duties of honesty and accuracy in their communications to workers themselves as articulated by the torts of fraudulent and negligent misrepresentation.

Employers speak to workers about a wide range of job-related topics that include the terms and conditions of employment, business projections, and applicable workplace legal protections. Employers’ …

Ritualization Of Ethno-Nationalism: A Textual Analysis Of A Hungarian Corpus Christi Procession, Lisa Pope Fischer

Publications and Research

Observing a Corpus Christi procession in post-socialist Hungary, this article uses a textual analysis to explore how the ritual mirrors post-socialist trends that affirm Hungarian identity. This article serves to both document an interesting ritual procession but also view it in light of growing ethno-nationalism that both unites a community yet also shows exclusion of others. It is like a mirror at a microcosmic level that reflects a kind of ritualization of ethno-nationalism.

Indexing Evidence Of Faith Integration, Glynis M. Bradfield

Faculty Publications

Workshop Tasks

•Reflect on types of faith integration

•Consider what happens at an Adventist school or university

•Experience and critique a program faith integration index

Job Satisfaction And Empowerment Of Self-Employed Nurse Practitioners: A Mixed Methods Study, Catherine Lyden

Electronic Theses and Dissertations

Background and Purpose: Self-employed nurse practitioners (NPs) have been part of the American health care landscape since the 1980s, owning practices throughout the United States. The purpose of this study was to explore the lived experience of self-employed NPs, focusing on their level of job satisfaction and perceived level of empowerment.

Methods: The study was a convergent-parallel designed, mixed-method study, utilizing a survey and semi-structured interviews. The survey included the Misener Job Satisfaction Survey (MJSS) and Conditions of Work Effectiveness Questionnaire II (CWEQ-II)

Conclusions: A total of 142 surveys and 13 interviews were completed and analyzed. Nurse practitioners in private …

Reconstructing The War In Iraq: Post-9/11 American War Fiction In Dialogue With Official-Media Discourse, Ashley Kunsa

Electronic Theses and Dissertations

This project examines American-authored Iraq War fiction within the context of public discourse. Given that modern, industrialized warfare is as much created by and through official-media discourse as represented by it, fictional accounts of Iraq exist not outside or separate from this discourse but rather in a dynamic, continually evolving relationship with it. The three texts explored in this study—Ben Fountain’s Billy Lynn’s Long Half Time Walk (2012), David Abrams’ Fobbit (2012), and Phil Klay’s Redeployment (2014)—thus do more than merely represent the war experience: operating always in conversation with how the war has been constructed, the novels and stories …

Perceptions Of Care During The Prenatal Period: An Ethnonursing Study Of African American Childbearing Women In The Military Health System, Thecly Hines Scott

Electronic Theses and Dissertations

Introduction: The military health system (MHS) offers prenatal care at no-cost, but African-American women eligible for prenatal care still have low/no/late utilization. No studies have sought to understand factors that influence African American women’s use of early and continuous prenatal care or their perceptions of the care they received in the military health care system. The purpose of this research was to understand how African American women in the MHS perceived their care during the prenatal period. Methodology: An ethnonursing study was conducted in two military treatment facilities. The sample comprised 21 informants. Findings: Leininger’s Four Phases of Ethnonursing Data …