Digital Commons Network^™

Elementary Principals’ Perceptions Regarding Implementing A District-Mandated Educational Equity Policy, Glen Patrick Messier

Walden Dissertations and Doctoral Studies

The problem in the current basic qualitative study was that elementary principals were challenged to implement a district-mandated educational equity policy. The purpose of this qualitative study was to explore elementary principals’ experiences implementing a district-mandated educational equity policy. The conceptual framework for this study was transformational leadership theory. This leadership theory was often used by leaders who focused on a collective purpose and held themselves accountable for initiating and sustaining positive social change. Three research questions addressed principals’ experiences and perceptions in their attempt to implement a district-mandated educational equity policy, as well as principals’ suggestions for continuous improvement …

Advancing Carbon Sequestration Through Smart Proxy Modeling: Leveraging Domain Expertise And Machine Learning For Efficient Reservoir Simulation, Iman Oraki Kohshour

Graduate Theses, Dissertations, and Problem Reports (ETD)

Geological carbon sequestration (GCS) offers a promising solution to effectively manage extra carbon, mitigating the impact of climate change. This doctoral research introduces a cutting-edge Smart Proxy Modeling-based framework, integrating artificial neural networks (ANNs) and domain expertise, to re-engineer and empower numerical reservoir simulation for efficient modeling of CO₂ sequestration and demonstrate predictive conformance and replicative capabilities of smart proxy modeling.

Creating well-performing proxy models requires extensive human intervention and trial-and-error processes. Additionally, a large training database is essential to ANN model for complex tasks such as deep saline aquifer CO₂ sequestration since it is used as the …

Illegal Unreported And Unregulated Fishing And Overfishing Policymaking In A Caribbean Island Country, Anya J. Moses

Walden Dissertations and Doctoral Studies

Small island developing states, especially those within the Caribbean community, are faced with the challenges of overfishing and illegal, unregulated, and unreported (IUU) fishing activities. Despite global legal reforms, enforcement continues to be ineffective. In the policymaking process, the perspectives of those critically impacted are rarely taken into consideration The purpose of this qualitative study was to explore the issues leading to the lack of inclusion of fisherfolk knowledge in the policymaking process and policies that promote SDG 14. The goal was to explore the importance of fisherfolk involvement in the policymaking process. The research question focused on identifying the …

Sexually Transmitted Disease Awareness Amongst Adolescents 13 To 18 Years Of Age, Ngwanma Nwokoro

Walden Dissertations and Doctoral Studies

Abstract Sexually transmitted infections or diseases (STIs/STDs) acquired through sexual activities lead to compromised sexual health. The adolescent population is at high risk of acquiring STIs/STDs due to their lack of knowledge. The gap in practice was that the nurse practitioners (NPs) were deficient in standard of care; adolescent patients lacked consistent evaluation, education, or documentation of the education in their medical records. The practice-focused question focused on the evaluation of the effectiveness of a quality improvement (QI) initiative that incorporated the use of the American Association for Pediatrics screening and Center for Disease Prevention and Control (CDC) treatment guidelines …

Staff Education For Nurses And Providers On Rapid Mood Screener, Lolade Adekemi Ogunleye

Walden Dissertations and Doctoral Studies

Advances in the psychiatric field have led to the development of valuable tools that can be used in screening patients to understand their condition better. Indeed, instruments such as the Rapid Mood Screener (RMS) have been significantly used to help diagnose conditions such as bipolar disorder. The implication is that such tools need to be appropriately used by health care practitioners such as nurses for better and more accurate diagnostic results. A more accurate diagnosis is a foundation for better patient management and outcomes. Therefore, as part of a bigger plan, mental health facilities should make deliberate efforts to ensure …

Predictors Of Retention Among Individuals With Hiv Initiating Antiretroviral Therapy In Ghana, Ivy Ama Okae

Walden Dissertations and Doctoral Studies

Abstract Managing HIV requires lifelong therapy. Retaining clients on lifelong therapeutic antiretroviral therapy (ART) ensures the suppression of viral replication and better health outcomes. The time of the start of ART management is also a factor in determining better health outcomes for persons living with HIV. This study examined the association between initiation criteria (treat all, Option B+, and CDC T-cell count < 500) and retention on ART at 12 months for 17,974 randomly selected clients in the Ghana Health Service's HIV patient electronic database. Analyses controlled for age, gender, educational status, alcohol use, treatment/adherence monitoring, and tuberculosis disease treatment. Bronfenbrenner's ecological systems theory guided the interpretation of the findings. Results shows that retention was positively associated with all treatment initiation criteria. Clients initiated with CD4 count ≤ 500 criteria seemed to be retained at 12 months on ART at a higher rate than initiation criteria based on Option B+ and treat all. The study results may contribute to positive social change by supporting CD4 testing for clients before initiation of ART to improve retention and ensure the availability and use of adherence counseling, no tuberculosis disease and its prevention, and low use of alcohol among people living with HIV. The results of this study may also provide opportunities for public health policy intervention efforts requiring a personalized, group-based approach to service delivery at the intrapersonal level, interconnected with interpersonal, meso, and meta factors at the community level.

A Staff Education Project On The Administration Of Clinical Practice Guidelines For The Treatment Of Obesity And Overweight Children And Adolescents, Emilia Ochiabuto Okoye

Walden Dissertations and Doctoral Studies

AbstractObesity among children and adolescents has reached epidemic proportions in the United States (U.S). Nurses in pediatric settings have a critical role to play in assessing and managing childhood obesity. The partner site for this project has a childhood obesity rate of 35% compared to the national average of 19%. However, the nursing staff lacked adequate knowledge, competence, and confidence in assessing and managing childhood obesity in line with the recommended guidelines. The problem was addressed by implementing the Clinical Practice Guideline for the Treatment of Obesity and Overweight Children and Adolescents via an education program. The program’s content was …

Augmented Reality And Mobile Systems For Heavy Equipment Operators In Surface Mining, Juan David Valencia Quiceno

Graduate Theses, Dissertations, and Problem Reports (ETD)

U.S. federal laws mandate that mining companies ensure a safe workplace, implement approved training programs, and promptly report work-related injuries. The mining industry's commitment to innovation reflects a history of adopting advancements to enhance environmental sustainability, workplace safety, and overall productivity, while simultaneously reducing operational costs. This thesis proposes the integration of Augmented Reality (AR) technology and digital applications to enhance the surface mining industry, presenting two innovative solutions: an AR Training System and an Operational Digital System. These business solutions have been developed and applied at a surface mine in the southwest of the US, having the potential to …

Longitudinal Oxygen Imaging In 3d (Bio)Printed Models, Ryan Curtis O'Connell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Electron paramagnetic resonance (EPR), and its molecular imaging modality, is a powerful tool to noninvasively map various biological and chemical markers within objects of interest. Reliable data acquisition is a major impeding factor for longitudinal hands-off measurements. Measurements are especially challenging in biomedical applications, as live objects are not static. Frequent changes occur that require constant fine recalibration of the EPR detection system, called the resonator. To enable longitudinal imaging, a technology permitting automatic digital control of resonator coupling, tuning, and EPR data acquisition was developed. Automation was achieved through the utilization of a microcontroller and digital peripheral components such …

Advancing Prosthetic Design Using Neural And Mechanical Dynamics, Kacie E. Hanna

Graduate Theses, Dissertations, and Problem Reports (ETD)

Limb loss poses a significant challenge to mobility and the performance of daily activities. Currently, nearly half of the amputees using powered prosthetics abandon their device due to inadequate limb coordination and movement control abilities. In the healthy system, passive and neural dynamics facilitate the synchronized activation of muscles necessary for coordinated movement. However, in the amputee, the system is disrupted. The goal of this research is to use neural and mechanical dynamics to inform the design of prosthetic devices in order to restore intuitive control and coordinated limb movement.

The first aim of this research is to investigate neural …

Investigation Of Regulator Of G Protein Signaling-12 (Rgs12) As A Modulator Of Monoamine Transporters And Behavioral Responses To Cocaine, Allison Noel White

Graduate Theses, Dissertations, and Problem Reports (ETD)

Stimulant use disorder is a psychiatric illness that is characterized by repeated use of stimulant drugs despite harm to the user. There are currently no Federal Drug Administration (FDA)- approved medications for stimulant use disorder, and the number of stimulant use-associated deaths have increased over the past decade. Given the prevalence of and lack of treatments for stimulant use disorder, there is an urgent need to identify new drug targets and treatments for this illness. Our group is investigating Regulator of G protein Signaling-12 (RGS12) as one such potential drug target for stimulant use disorder. Mice lacking RGS12 are insensitive …

Ai-Based Smart Proxy Modelling Of Ibdp Field Reservoir Pressure Of Carbon Sequestration, Idongesit Bassey Ansa

Graduate Theses, Dissertations, and Problem Reports (ETD)

The application of artificial intelligence (AI) and machine learning (ML) in engineering holds great promise for addressing the challenge of climate change. One key focus in the fight against climate change is the geological storage of CO2, which has gained significant attention as a crucial strategy for mitigating greenhouse gas emissions. The primary objective is to ensure the safe and controlled containment of injected CO2 over an extended period, which has proven to be a major challenge in the journey toward carbon capture, and geologic storage (CCS). To achieve this goal, several critical tasks must be accomplished. These include ensuring …

Analysis Of The Brittle Failure Mechanism Of Underground Stone Mine Pillars By Implementing Numerical Modeling In Flac3d, Rosbel Jimenez

Graduate Theses, Dissertations, and Problem Reports (ETD)

The room and pillar mining method is the most commonly utilized method for extracting minerals found in flat-lying stratiform, and it has been used in the majority of underground stone mines in the United States (Esterhuizen et al., 2011), as a consequence, it is a primary topic of study in the mining field. If a set or layout of pillars is unstable, it can cause a major collapse, resulting in not only the destruction of the underground mine, but also air blast, subsidence, and convergence of the mine opening, especially if they occur in a short period of time (Esterhuizen …

Spatial Analysis Of Bike-Sharing Station Usage And Placement: Redefining Bike-Share Planning For Equity, Sydney E. French

Graduate Theses, Dissertations, and Problem Reports (ETD)

Historically, bike share system (BSS) station locations have been guided by potential economic and environmental benefits associated with increased bike share usage per station. For example, a typical location identification approach may attempt to maximize demand per station based on population size or activity and area characteristics. Such identification methods often result in an unequal representation of specific population groups among the systems’ users, thus hindering the potential sustainability-related benefits. To address these disparities, some bike share organizations have started developing and implementing equity-oriented programs focusing on expanding their reach to underserved communities. Nevertheless, the effectiveness of such programs has …

Leveraging Artificial Intelligence And Geomechanical Data For Accurate Shear Stress Prediction In Co2 Sequestration Within Saline Aquifers (Smart Proxy Modeling), Munirah Alawadh

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research builds upon the success of a previous project that used a Smart Proxy Model (SPM) to predict pressure and saturation in Carbon Capture and Storage (CCS) operations into saline aquifers. The Smart Proxy Model is a data-driven machine learning model that can replicate the output of a sophisticated numerical simulation model for each time step in a short amount of time, using Artificial Intelligence (AI) and large volumes of subsurface data. This study aims to develop the Smart Proxy Model further by incorporating geomechanical datadriven techniques to predict shear stress by using a neural network, specifically through supervised …

Enhancing Vehicular Perception: A Comprehensive Analysis Of Sensor Fusion Performance Through Weighted Averages And Fuzzy C-Means For Optimal Data Association, Zachary Brian Flanigan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work explores the implementation of sensor fusion and data association for autonomous vehicle design. Advancements in Adaptive Driver Assistance System (ADAS) technology have driven the development of perception algorithms required for higher levels of autonomy in vehicles. Perception algorithms process data collected from radar, camera, and LiDAR sensors to generate a complete model of the ego vehicle’s surrounding environment. Fusion of data from these sensors is important for accurate measurement of longitudinal and lateral distances to surrounding objects. Sensor fusion associates sensor detections to each other through different data association techniques. Data association techniques can consist of independent assignment …

Non-Native Educators’ Interpretation Of Culturally Responsive Pedagogy With Mojave Students, Cellina Marie Reyes

Walden Dissertations and Doctoral Studies

AbstractThe non-Mojave teachers are struggling to implement culturally responsive pedagogy practices to meet the educational needs of Fort Mojave students from a rural reservation. Research indicates that all students should be provided with responsive pedagogical practices that allow them to be engaged in the classroom. The purpose of this basic qualitative study is to investigate how non-Mojave classroom teachers are implementing culturally responsive pedagogy and what their perceived needs are when teaching Fort Mojave students in an elementary school located in southwestern, Arizona. Culturally responsive pedagogy was used as a practical theoretical framework through the incorporation of Gay’s four teacher …

Influence Of Staffing Shortages On Safety And Communication In Behavioral Health, Raven Brittany Robinson

Walden Dissertations and Doctoral Studies

At the selected behavioral health organization (BHO), leaders desire to improve patient safety and staff communication to provide quality mental health services. They need strategies to achieve these goals. The Baldrige Excellence Framework was used to identify the workforce challenges and practices that facility leaders can potentially use to improve performance to help achieve success, sustainability, and the mission of the BHO. The data sources consisted of (a) semistructured interviews with the CEO, the leader of the intake department, an intake therapist, an intake coordinator, and an RN and (b) reviews of the BHO’s website, and pertinent academic literature. Data …

Teacher And Administrator Perceptions Of The Effectiveness Of Instructional Coaching, Judith Salazar

Walden Dissertations and Doctoral Studies

Instructional coaching focuses on increasing the effectiveness of instructional practices. However, little is known concerning the perceptions of teachers and administrators regarding the role of instructional coaching related to student performance. This basic qualitative study was conducted to analyze the perceptions of administrators and teachers within one region in Texas. Semistructured interviews were conducted with 16 participants—eight administrators and eight teachers—using a researcher-designed questionnaire regarding the effectiveness of instructional coaching in addressing achievement gaps among African American, Hispanic, and European American students. Fullan’s coherence framework provided the basis for data analysis. Data collected from the interviews were analyzed and four …

Decoding Brain Basis Of Laughter And Crying In Natural Scenes, Lauri Nummenmaa, Tuulia Malèn, Sanaz Nazari-Farsani, Kerttu Seppälä, Lihua Sun, Severi Santavirta, Henry K. Karlsson, Matthew Hudson, Jussi Hirvonen, Mikko Sams, Sophie Scott, Vesa Putkinen

School of Psychology

Laughter and crying are universal signals of prosociality and distress, respectively. Here we investigated the functional brain basis of perceiving laughter and crying using naturalistic functional magnetic resonance imaging (fMRI) approach. We measured haemodynamic brain activity evoked by laughter and crying in three experiments with 100 subjects in each. The subjects i) viewed a 20-minute medley of short video clips, and ii) 30 min of a full-length feature film, and iii) listened to 13.5 min of a radio play that all contained bursts of laughter and crying. Intensity of laughing and crying in the videos and radio play was annotated …

Exploring Supervisory Experiences After The Legalization Of Recreational Marijuana In Colorado, Charles Daniel Mason

Walden Dissertations and Doctoral Studies

AbstractColorado became the first state to decriminalize recreational marijuana in 2014. This new public policy resulted in unproven regulatory changes in any population in the United States. The purpose of the study was to discover the core perspective and experiences of 12 supervisors who experienced this phenomenon in their professional occupations, through the lens of accountability. The risk perceptions of supervisors’ due to policy shifts regarding recreational marijuana in Colorado were analyzed using the Delve system and hand coding. Findings indicated employees’ use of marijuana had a direct impact on productivity, which decreased significantly over time. Employees displayed signs of …

Generational Information Security Awareness And The Role Of Big Five Personality Traits, Gloria Mccue

Walden Dissertations and Doctoral Studies

AbstractTechnological change drives organizations to safeguard information systems. However, such safeguards are dependent upon people to follow security rules. This study examined generational cohorts and personality traits and their impact on information security awareness. Participants in this study were 137 volunteers who completed an anonymous survey online. Two tools were utilized to collect data from the participants: the Human Aspects of Information Security Questionnaire and the Big Five Inventory, which captured behaviors and personality traits, respectively. The three main generational cohorts represented in the study, Baby Boomers, Generation X, and Generation Y, were in today’s workforce. The results of the …

College Readiness In Writing As Determined Through Graduates’ Qualitative Perceptions, Dr. Rebecca G. Mitchell

Walden Dissertations and Doctoral Studies

The aim of this study was to determine why, although rigorous standards in English language arts (ELA) have been adopted in a northwestern state and were designed to build toward college readiness, high school students graduating from a college readiness curriculum are not college ready in the area of writing. The purpose of the research was to explore graduates’ perception of college readiness, how a college readiness curriculum prepared them for college writing, and ways to improve that preparation. The theory that supported this study was the concept of college readiness. The key research questions for this study addressed how …

Strategies To Implement Efficient Manufacturing Systems To Improve Companies’ Performance, Ihebuche Miracle Okorie

Walden Dissertations and Doctoral Studies

Researchers have demonstrated that many manufacturing managers have used successful manufacturing strategies to improve their company’s performance. Manufacturing managers search for successful strategies to implement efficient manufacturing systems because inefficient manufacturing systems can negatively affect their company’s performance. Using transformational leadership as a conceptual framework, the purpose of this qualitative single case study was to explore six U.S. manufacturing managers’ strategies to implement efficient manufacturing systems to improve their company’s performance. The participants were six manufacturing leaders of a company who had successfully employed strategies to implement efficient manufacturing systems. Data were collected from semistructured, open-ended interviews and a review …

Community-Based Organization Leaders’ Communication Effectiveness And Effects On Performance Outcomes, Troy N. Nicholas

Walden Dissertations and Doctoral Studies

The purpose of this study was to determine if effective leader communication builds employee relationships that improves organizational performance. Organizational communication is a prominent factor that impacts the outcome of an organization’s goals and assists in executing its mission. There remain some gaps in the current literature considering the work environment and the attitudes of employees as they relate to organizational communication. To address the gap, the constructive grounded theory model was used to construct and analyze a theory of organizational communication. The sample for the study included 12 participants who were leaders or employees in a community-based organizations in …

Independent Restaurant Owners’ Strategies For Acquiring, Managing, And Retaining Organizational Knowledge, Skills, And Abilities, Alice Nelson Sidibe

Walden Dissertations and Doctoral Studies

Independent restaurant owners face challenges of slim profit margins and postpandemic labor shortages without the benefit of additional support their franchised counterparts receive. Independent restaurant owners are concerned about these external pressures making them more vulnerable to closure during economic downturns. Previous researchers have not explored how to use organizational knowledge, skills, and abilities (KSAs) to achieve success within an independent restaurant. Grounded in resource-based view theory, the purpose of this qualitative multiple-case study was to explore strategies that independent restaurant owners use to acquire, manage, and retain KSAs and sustain their business beyond five years. The participants were three …

Perspectives On Instructional Barriers To Inclusion At Primary Schools In Jamaica, Marcia Hillary Peak

Walden Dissertations and Doctoral Studies

AbstractInclusive education, which is a global practice in schools, recognizes the rights of all children to equal educational opportunities, including those with special needs or disabilities; however, educators in low-income countries like Jamaica struggle with its implementation. This basic qualitative study explored teachers’ and principals’ perceptions toward instructional and curricular barriers to inclusion in primary level schools. The theory supporting this study is Bronfenbrenner’s development ecology model. Research questions focused on educators’ perspectives of instructional barriers to inclusion. Twelve participants from seven mainstream schools in a single region were interviewed. Data were analyzed using open coding to determine patterns, and …

Strategies To Meet The Budgeted Ratio Between Adjunct And Full-Time Faculty, Tanja Pennino

Walden Dissertations and Doctoral Studies

Human resource managers are concerned that the budgeted ratio between adjunct and full-time faculty will not meet certification standards, but human resource managers lack faculty hiring strategies to manage the budgeted ratio between adjunct and full-time faculty to maintain the institutional operating budget and meet certification standards. Grounded in the human capital theory, the purpose of this qualitative multiple case study was to explore the strategies used by human resource managers to manage the ratio between adjunct faculty and full-time faculty to maintain the institutional operating budget. The participants comprised of four human resource managers within 4-year state colleges in …

Foster Youth's Experience With Visitation During The Covid-19 Pandemic., Carrie Player Sexton

Walden Dissertations and Doctoral Studies

Much has been learned about how the shelter-in-place (SIP) orders imposed during the coronavirus disease 2019 (COVID-19) pandemic affected children socially and emotionally. However, less was known about how the youths in foster care settings experienced visitation with their approved visitors because of the shelter-in-place order. In this phenomenological study, the lived experiences of 10 foster youths between the ages of 16 and 18 years during the COVID-19 SIP were explored using semi structured interviews. The theory that grounded this study was Ainsworth and Bowlby's attachment theory. Evernote was used to guide, store, observe, and record the data in one …

Leadership Strategies For Modeling Ethical Behavior In The Real Estate Industry, Lakecia Ann Reddrick

Walden Dissertations and Doctoral Studies

Real estate brokers face challenges in cultivating and supporting the ethical conduct oftheir agents. Developing ethical behavior and decision-making is crucial as it directly impacts the trust, satisfaction, and protection of clients, buyers, sellers, and other stakeholders in the real estate industry. Grounded in the theories of emotional intelligence and servant leadership, this qualitative multiple-case study aimed to explore strategies real estate brokers used in modeling ethical behavior and decision-making for their agents to influence performance and profitability positively. The participants were nine real estate brokers who modeled the ethical behavior and decision-making their agents must practice to impact performance …