Digital Commons Network^™

University Interdisciplinary Linked Block Schedules And Developmental Student Success, Linda S. Reeves-Wymer

Walden Dissertations and Doctoral Studies

Developmental education is the starting point for many 1st-year college students, especially from underrepresented, low-income, and first-generation populations. One such 1st-year program linked block-scheduled academic skill-development courses with a required interdisciplinary general education science course where instruction was provided simultaneously in a lecture format to college-ready nondevelopmental students and developmental students in three skill-development courses: reading, writing, and combined reading/writing. Although this program had existed for over 20 years, the effectiveness of the program, meaning whether the linked skill-development courses were associated with academic success, had not been assessed. Guided by Tinto’s integration theory, a causal comparative design with the …

Strategies For Promoting Inclusion And Employee Engagement To Improve Remote Teams’ Performance, Bruce Edward Richardson

Walden Dissertations and Doctoral Studies

External factors such as the pandemic have forced organizational leaders to embrace flexible work structures. Differences in remote versus collocated workplaces escalate the importance for company leaders to uncover strategies to maintain employee engagement and performance. Grounded in the organizational support theory, the purpose of this qualitative multiple-case study was to explore strategies leaders of remote, diverse teams with high engagement and inclusion use to achieve high team performance. Data were collected using semistructured interviews from a purposeful sampling of five nationally distributed managers. A thematic analysis uncovered three themes: flexible leadership behavior, fair execution of human resource policy and …

Strategies To Mitigate Inappropriate Test Utilization By Physicians To Improve Efficiency In A Healthcare Setting, Christine C. Wood

Walden Dissertations and Doctoral Studies

Inappropriate test utilization by physicians for clinical decision-making in patient care is a significant problem facing some healthcare leaders. Healthcare leaders are concerned about inappropriate test utilization because it can increase healthcare costs and degrade patient outcomes. Grounded in the complex adaptive system and Lean Six Sigma conceptual frameworks, the purpose of this qualitative single-case study was to identify strategies seven hospital leaders in Maryland and Washington, DC. who implemented successful test utilization strategies for physicians. Data were collected from semistructured virtual interviews and organizational reports and analyzed using Yin’s 5 step process. Five themes emerged: (a) continuing physician education, …

Treatment-Seeking Experiences Of Ethiopian Women With Pelvic Organ Prolapse, Frehiwot Derso

Walden Dissertations and Doctoral Studies

AbstractPelvic organ prolapse (POP) is a gynecological health issue that negatively affects women’s lives globally and specifically in countries like Ethiopia where health care-related resources and infrastructures are limited. In remote areas of Ethiopia, women lack basic knowledge of POP and do not have the resources to access care and treatment that might be available. As a result, seeking treatment typically happens after years of suffering. Using a qualitative phenomenological method, this study addressed the treatment-seeking experiences for POP among women aged 30-60 in North Ethiopia. Fifteen women with POP were selected using purposive sampling at the University of Gondar …

Self Care Education For Nurses Following An Assault, Barbara Lynn Schwarz

Walden Dissertations and Doctoral Studies

AbstractSelf-Care Education for Nurses Following an Assault by Barbara Lynn Schwarz MS, Nebraska Wesleyan University, 2008 BS, Nebraska Wesleyan University, 2004

Project Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Nursing Practice

Walden University August 2023 Abstract Every day, 1 in 4 nurses experience physical and/or verbal assault, surpassing the rates among police officers and prison guards. This issue is particularly widespread among nurses working in mental health settings. The local practice problem for this project was the absence of self-care education for nurses following workplace assaults. The literature revealed that such assaults have traumatic …

Grade 6 To 8 Science Teachers’ Perceptions Of Implementing Project-Based Learning, Christian Smoke

Walden Dissertations and Doctoral Studies

Project-based learning (PjBL) instruction is an inquiry-based method that is beneficial to student achievement and their exploration of 21st-century learning skills, but there is a gap in the literature about how Grades 6 to 8 teachers feel about PjBL and its implementation. The research problem was science teachers in the United States were not consistently implementing project-based learning strategies as an instructional method to support students’ learning and academic achievement. The purpose of this study was to explore Grades 6 to 8 science teachers’ perceptions about the implementation of project-based learning instruction to support science education. The conceptual framework for …

How To Support Secondary School Teachers After Emergency Remote Teaching, Julia Howard Tortorice

Walden Dissertations and Doctoral Studies

AbstractThe forced use of emergency remote teaching (ERT) during COVID-19 school closures was sudden, disruptive, and difficult for teachers, leading to a minimal understanding of how to support secondary school teachers’ use of online educational technology after the ERT experience. The purpose of this qualitative study was to understand how to support secondary school teachers’ use of online educational technology after the ERT experience. The technology acceptance model was the framework used in this study. The research questions explored the framework by asking about teacher perspectives of support, usefulness, and ease of use of online educational technology. The data collection …

Social Worker Perspectives On Implementation Of Harm Reduction Into Abstinence-Based Substance Abuse Programs, Susan Woomer

Walden Dissertations and Doctoral Studies

Opioid addiction is a growing epidemic in the United States and was declared a public health emergency by the Department of Health and Human Services in October of 2017. There is a growing recognition that the current treatment for heroin and opioid addiction, abstinence-based treatment programs, is not readily available and has minimal success in addressing the epidemic. Harm reduction therapy is recognized as an effective way to address the opioid epidemic. This study aimed to develop further insight and understanding of how to integrate harm reduction therapy in abstinence-based treatment programs. The theoretical framework for this study was the …

Hydrogen Deuterium Exchange And Other Mass Spectrometry-Based Approaches For Epitope Mapping, Prashant N Jethva, Michael L Gross

2020-Current year OA Pubs

Antigen-antibody interactions are a fundamental subset of protein-protein interactions responsible for the "survival of the fittest". Determining the interacting interface of the antigen, called an epitope, and that on the antibody, called a paratope, is crucial to antibody development. Because each antigen presents multiple epitopes (unique footprints), sophisticated approaches are required to determine the target region for a given antibody. Although X-ray crystallography, Cryo-EM, and nuclear magnetic resonance can provide atomic details of an epitope, they are often laborious, poor in throughput, and insensitive. Mass spectrometry-based approaches offer rapid turnaround, intermediate structural resolution, and virtually no size limit for the …

Impacts Of Error Rate And Therapist Appearance On The Accuracy Of Fidelity Data Collection, Marisela A. Aguilar

Graduate Theses, Dissertations, and Problem Reports (ETD)

Procedural fidelity is the extent to which a procedure is implemented as designed. Analyzing procedural-fidelity data can improve treatment outcomes. Fidelity data are generally collected by a supervisor or trained data collector using a checklist that operationalizes each component of the procedure and accounts for errors in implementation of the components. However, little is known about variables that may affect the accuracy of supervisor-collected data generally, and even less is known about variables that may affect the accuracy of procedural-fidelity data. Therefore, the current studies explored the extent to which Board Certified Behavior Analysts (BCBAs) accurately detected programmed fidelity errors …

Spatio-Temporal Deep Learning Approaches For Addressing Track Association Problem Using Automatic Identification System (Ais) Data, Md Asif Bin Syed

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the realm of marine surveillance, track association constitutes a pivotal yet challenging task, involving the identification and tracking of unlabelled vessel trajectories. The need for accurate data association algorithms stems from the urge to spot unusual vessel movements or threat detection. These algorithms link sequential observations containing location and motion information to specific moving objects, helping to build their real-time trajectories. These threat detection algorithms will be useful when a vessel attempts to conceal its identity. The algorithm can then identify and track the specific vessel from its incoming signal. The data for this study is sourced from the …

Ambush, Reprisal, Riot, Revolt, And Reform: The Transnational Evolution Of British Colonial Policing In Ireland And The Palestine Mandate, 1918-1948, Tyler Kickler Krahe

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation looks at the changes in British colonial policing between Ireland and the Palestine Mandate from 1918 and 1948. This time period covers the duration of the Anglo-Irish War, as well as Britain’s mandatory control of Palestine. It is the argument of this work that from 1918 to 1936, between Ireland and the Palestine Mandate, British colonial police forces demonstrated a pattern of evolving police training, practice, and organization, spurred on by violent action and followed by attempts at reform. This pattern continued until the Arab Revolt of 1936 when the police forces in the Palestine Mandate abandoned attempts …

Relationship Between Type Of Health Insurance And Access To Care Among African American Males, Tiffani Simmons

Walden Dissertations and Doctoral Studies

Insurance based discrimination is a bias that has the potential to harm patients by limiting their access to care and widen health disparities between patients with private and public insurance. The purpose of this study was to examine whether there is a relationship between type of health insurance (private and public) and access to care factors (acceptability and availability) among African American males ages 25–64 with chronic conditions. The Andersen healthcare utilization model framework supported this research in focusing on the determinants that influences a patient’s ability to access to health care. The research questions examined whether a relationship existed …

Understanding The Lack Of Communication Between Communities And Law Enforcement Through A Community Policing Program, Patrick B. Skoczek

Walden Dissertations and Doctoral Studies

Abstract

Inequitable treatment by law enforcement officers has deeply impacted minority communities in the United States. Public incidents of abuse of power, discriminatory treatment, and excessive use of force have received increased attention, creating increased community mistrust of law enforcement officers. To help bridge the gap between communities and law enforcement agencies, this qualitative phenomenological study was conducted to examine the use and impact of the Policing and Public Safety Problem-Solving Programs. Data were collected through interviews with 12 retired police officers and 12 community members. Interview questions were related to participants’ perceptions regarding a breakdown in trust between law …

Challenges And Solutions For Native Mandarin-Chinese Speakers In Singing German Lieder, Fei Xia

Graduate Theses, Dissertations, and Problem Reports (ETD)

ABSTRACT Challenges and Solutions for Native Mandarin-Chinese Speakers in Singing German Lieder Fei Xia The purpose of this research is to focus on the challenges faced by Mandarin-Chinese speaking singers singing German Lieder, as well as providing these singers with solutions for overcoming these difficulties. Singing art songs such as French Mélodies and German Lieder can greatly improve singers’ artistic and aesthetic values because of the beauty of the poetry and the language. However, it is very difficult for native Mandarin- Chinese speakers to sing German Lieder. Some of the primary difficulties faced by Mandarin-Chinese-speaking singers are German diction and …

Effects Of Ethanol And Nicotine Co-Administration On Risky Choice In Rats, Erin E. Wylie

Graduate Theses, Dissertations, and Problem Reports (ETD)

Individuals often engage in the comorbid use of alcohol (ethanol) and nicotine, leading to further-escalated health consequences than the use of either drug in isolation. Given the poor health outcomes resulting from the combined administration of ethanol and nicotine, some of which may be due to increased risky choice, more basic research is needed to better characterize drug/dose interactions on risky choice. Probability-discounting procedures involve a series of discrete choices between a smaller, certain reinforcer (i.e., a safer choice) and a larger, increasingly uncertain reinforcer (i.e., a riskier choice). Probability-discounting procedures allow for the assessment of …

Evaluating The Effects Of Modifying Mixing And Pelleting Parameters On Feed Quality, Pellet Production Rate, And Broiler Performance, Lucas E. Knarr

Graduate Theses, Dissertations, and Problem Reports (ETD)

In Chapter 2, an experiment was conducted to evaluate the effect of different mixer types (MTY) and mix times (MTI) on mix uniformity (MU). A 2 (mix time) x 3 (mixer type) factorial was utilized in this experiment to create six treatments, each mixed in three randomized complete blocks. Mix times were designated adequate or inadequate, were based on the manufacturers’ recommendation, and varied based on the mixer utilized. The mixer types utilized included a vertical mixer, horizontal mixer, and transfer mixing system. The transfer mixing system can be described as a batch-to-mix system …

Applications Of Digital Filters In Radio Astronomy, Joseph William Kania

Graduate Theses, Dissertations, and Problem Reports (ETD)

The radio sky spans tens of orders of magnitude in length, density, and time.
In this thesis, using novel filtering techniques and two different telescopes,
we investigate two tracers of cosmic structure: Baryon Acoustic Oscillations
(BAOs) and Fast Radio Bursts (FRBs). BAOs formed as the universe cooled
after the Big Bang. BAOs provide a fiducial length scale of the universe
throughout cosmic time and thus can be used to understand how the universe
is evolving. FRBs are very bright, short timescale, bursts of as-yet unknown
origin which occur uniformly on the sky at a rate of a few thousand per …

Cue Reactivity In Electronic Cigarette Users With Sign-Tracking Or Goal-Tracking Behaviors, Polina Krom

Graduate Theses, Dissertations, and Problem Reports (ETD)

Polina Krom

Cue reactivity is an important predictor of addiction course and relapse. However, cue reactivity is only observed after an addiction develops. As such, it is unclear to what degree cue reactivity represents a state stemming from the addiction process versus a trait-like propensity towards developing cue-reward associations. Work in animal models has pointed to important individual differences in trait-like inclination to attribute incentive salience to reward-predictive cues that is associated with addiction-relevant behavioral and neurobiological features. These individual differences manifest as sign-tracking (ST) and goal-tracking (GT) behaviors during Pavlovian conditioning. Little research has attempted to translate ST and …

Footwear Image Quality Classification: Using Subjective Assessments And Objective Image Metrics To Predict Impression Quality, En-Tni Lin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Shoeprints deposited during the commission of a crime vary in quality as a function of numerous factors, such as substrates, media, and the specific physical activities carried out by perpetrators. This variability in impression quality impacts the amount of information available from questioned crime scene impressions, and therefore an examiner's confidence in providing opinions of source attribution. In response, this research attempted to characterize footwear impression quality based on image sharpness, contrast, entropy, homogeneity, noise, quantity of information, and complexity, and to integrate these hand-engineered feature descriptions with subjective opinions of impression quality.

The methodology followed a five-pronged approach. First, …

Probabilistic Short Term Solar Driver Forecasting With Neural Network Ensembles, Joshua Daniell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Commonly utilized space weather indices and proxies drive predictive models for thermosphere density, directly impacting objects in low-Earth orbit (LEO) by influencing atmospheric drag forces. A set of solar proxies and indices (drivers), F_10.7, S_10.7, M_10.7, and Y_10.7, are created from a mixture of ground based radio observations and satellite instrument data. These solar drivers represent heating in various levels of the thermosphere and are used as inputs by the JB2008 empirical thermosphere density model. The United States Air Force (USAF) operational High Accuracy Satellite Drag Model (HASDM) relies on JB2008, and …

Assessment Of Factors That Affect Men’S Access And Utilization Of Tuberculosis Services In Zululand District In South Africa, Maureen Fatsani Tshabalala

Walden Dissertations and Doctoral Studies

Tuberculosis (TB) remains the leading cause of death in South Africa, with higher mortality rates among men compared to women, despite the availability of free TB services and a reduction in TB death rates. However, research on the factors influencing men's access to and utilization of TB services is limited. The purpose of this study was to assess the factors affecting men's geographical access and quality utilization of TB services in the Zululand district of KwaZulu Natal province, South Africa. A survey questionnaire was used to collect data from 200 men recruited from selected primary health care facilities. Andersen's model …

Parent Perspectives On How The Covid-19 Pandemic Affected Symptoms Of Autism Spectrum Disorder In Their Children, Desiree Marie Vanderlick

Walden Dissertations and Doctoral Studies

Autism is a disorder that is characterized by struggles with socialization anddevelopmental delays that often involve much guidance and support. The purpose of this study was to explain the experience of parents as they attempted to manage behaviors related to symptoms of autism during the worldwide quarantine prompted by COVID-19. This study aimed to close the gap in literature and explore to see if there were any concerns that could be addressed by future studies. The study was framed around Bowen’s theory, which addresses emotions within a family unit, and the interdependence theory, which addresses how humans thrive to be …

Impact Of Family Health Outcomes And Work Balance On Health Services Organizations’ Workplace Attendance, Marcus Levinsky Wade

Walden Dissertations and Doctoral Studies

Work-life balance (WLB) is employees’ ability to effectively manage between job obligations and everyday life activities involving family, health, and social life. Successful WLB has become increasingly important to healthcare administrators due to staff shortages and essentials of job performance, attendance, and satisfaction. The purpose of this quantitative study was to determine if there was a correlation between WLB, workplace stress, and employee workplace attendance. The two research questions were correlational; the dependent variable was workplace attendance, and the independent variables were workplace stress and WLB. The compensation theory served as the foundation for the study, in which both family …

Patient-Rated Physician Compassion And Patient Compliance With Colorectal Cancer Screening, Christine Caputo Winn

Walden Dissertations and Doctoral Studies

In 2021, colorectal cancer was the second leading cause of cancer deaths in the United States, where screening prevented 46%–63% of colorectal cancer deaths. Compassionate care has been an area of study among scholars since Hippocrates. The purpose of this quantitative research study was to examine whether there was a relationship between the independent variables of provider compassion, patient gender, and length of provider patient relationship with the dependent variable of patient adherence behavior for prescribed colorectal cancer screening tests among primary care patients between 2019 and 2020 in a northeastern U.S. state. Guided by the theory of planned behavior …

Nonprofit Leader Strategies For Revenue Growth And Financial Sustainability, William David Woods

Walden Dissertations and Doctoral Studies

Nonprofit leaders must ceaselessly endeavor to become more entrepreneurial by accumulating strategies for growing organizational revenue and promoting financial sustainability when charitable contributions cannot fund their business operations. The failure to obtain charitable contributions can lead to nonprofit closure. Grounded in behavioral portfolio theory, the purpose of this qualitative single case study was to explore strategies a leader of a small Wisconsin nonprofit used to increase revenue and financial sustainability when charitable contributions were insufficient to finance business operations. Data collection included semistructured interviews; organizational documents and reports; financial records and reports; social media; and internet reports. Data were analyzed …

Strategies To Mitigate Inappropriate Test Utilization By Physicians To Improve Efficiency In A Healthcare Setting, Christine C. Wood

Walden Dissertations and Doctoral Studies

Inappropriate test utilization by physicians for clinical decision-making in patient care is a significant problem facing some healthcare leaders. Healthcare leaders are concerned about inappropriate test utilization because it can increase healthcare costs and degrade patient outcomes. Grounded in the complex adaptive system and Lean Six Sigma conceptual frameworks, the purpose of this qualitative single-case study was to identify strategies seven hospital leaders in Maryland and Washington, DC. who implemented successful test utilization strategies for physicians. Data were collected from semistructured virtual interviews and organizational reports and analyzed using Yin’s 5 step process. Five themes emerged: (a) continuing physician education, …

Retrospective Student Accounts Of Teacher Burnout Behaviors That Impact Social-Emotional Development, Erika Young

Walden Dissertations and Doctoral Studies

Teachers are the stability of the classroom where students are learning, making connections with peers, and preparing for their future. Teachers who are burnt out could make this difficult for some students. This qualitative, narrative study addressed the problem of discovering how teacher burnout behaviors impact social and emotional development among six public high school students through student retrospective stories. The theoretical foundation for this research was Bandura’s reciprocal determinism. Data were gathered through six semi-structured interviews and analyzed by thematic analysis, which provided four themes: 1) Variability in the impact of teacher burnout behavior, 2) The ways teacher burnout …

“Ingenious Entanglements”: Sheriffs, Capitalism, And Civil Society In America, 1750-1850, Chad R. Holmes

Graduate Theses, Dissertations, and Problem Reports (ETD)

Sheriffs served as indispensable legal actors who facilitated the expansion of democracy and capitalist transformation, processes that eventually limited their ability to profit from their work and diminished their social status. This dissertation is organized around specific sheriffs and the actions they performed to illustrate how county officers influenced society beyond the execution of court orders. These men—Rhode Island’s Beriah Brown, Pennsylvania’s John Barker, and Massachusetts’s Elisha Porter, Luke Baldwin, and Charles P. Sumner—believed they understood how to balance community demands and state directives in ways that would produce personal profit and greater authority. The work of these officers and …

Abundance-Habitat Relationships And Aquatic-Terrestrial Habitat Selection Patterns For Wood Turtles (Glyptemys Insculpta) In The Upper Midwest, Jena Marie Staggs

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to range-wide population declines, wood turtles (Glyptemys insculpta) are under review for federal listing under the United States Endangered Species Act. Understanding how habitat associations and environmental conditions influence population dynamics and spatiotemporal activity patterns is fundamental for designing effective management strategies. Previous work on wood turtle abundance-habitat relationships focused on broad-scale habitat relationships in northeastern North America. However, regional differences in climate, habitat conditions, and land use patterns limit their applicability to much of the wood turtle’s Upper Midwest distribution. Much of our understanding of wood turtle activity patterns is based on radiotelemetry studies, which are biased towards …