Digital Commons Network^™

Pixel-Mps: Stochastic Embedding And Density-Based Clustering Of Image Patterns For Pixel-Based Multiple-Point Geostatistical Simulation, Adel Asadi, Snehamoy Chatterjee

Michigan Tech Publications

Multiple-point geostatistics (MPS) is an established tool for the uncertainty quantification of Earth systems modeling, particularly when dealing with the complexity and heterogeneity of geological data. This study presents a novel pixel-based MPS method for modeling spatial data using advanced machine-learning algorithms. Pixel-based multiple-point simulation implies the sequential modeling of individual points on the simulation grid, one at a time, by borrowing spatial information from the training image and honoring the conditioning data points. The developed methodology is based on the mapping of the training image patterns database using the t-Distributed Stochastic Neighbor Embedding (t-SNE) algorithm for dimensionality reduction, and …

Codesign Principles For The Effective Development Of Digital Heritage Extended Reality Systems For Health Interventions In Rural Communities, Alejandro Veliz Reyes, Marius N. Varga, Hannah Bradwell, Rory Baxter, Ray B. Jones, Daniel Maudlin

School of Art, Design and Architecture

We present a methodological, theoretical, and technological outline of codesign principles for the effective development of digital heritage extended reality systems for health and care. The paper is based on two large-scale research projects involving ageing in rural and coastal communities, focused on the codesign of extended reality systems to stimulate new forms of access to local heritage sites with potential impact on health outcomes. Our approach stems from a multi-disciplinary collaboration between health, digital design, and heritage specialists, and suggests ways to reconcile diverging forms of knowledge production, such as our ‘researcher in residence’ methodology and the place-based complexities …

Diet Specialization Mediates Drivers Of Cucurbita Herbivory In A Semi-Arid Agroecosystem, Hannah L. Gray, Nicholas A. Ivers, Elizabeth Lopez, Brad G. Peter, Scott D. Longing, Magarita M. Lopez-Uribe, Shalene Jha

Geosciences Faculty Publications and Presentations

Herbivory is a major fitness pressure for plants and a key driver of crop losses in agroecosystems. Dense monocultures are expected to favor specialist herbivorous insects, particularly those who primarily consume crop species; yet, levels and types of herbivory are not uniform within regional cropping systems. It is essential to determine which local and regional ecological factors drive variation in herbivory in order to support functional agroecosystems that rely less on chemical inputs. Crops in the genus Cucurbita host a suite of both generalist and specialist herbivores that inflict significant damage, yet little is known about the relative contribution of …

Fabrication Of Binary Metal–Organic Frameworks Of Ni–Mn@Zifs(Cox·Zn1−Xo) Decorated On Cf/Cuo Nanowire For High-Performance Electrochemical Pseudocapacitors, Ali Momeni Abkahraki, Ali A. Ensafi

Chemistry & Biochemistry Faculty Publications and Presentations

Herein, metal–organic frameworks (MOFs) derived nanoflower-like based binary transition metal (Ni–Mn) are successfully fabricated by a simple synthesis method. The fabricated nanoflower-like structure displays a unique nanoflower-like architecture and internal porous channels constructed by MOF coated on CuO/CF/ZIFs (Co_x·Zn_1−xO) substrate, which is beneficial for the penetration of electrolyte and electron/ion transportation. The as-prepared CF/CuO/ZIFs (Co_x·Zn_1−xO)@BMOF(Ni–Mn) electrode materials present significant synergy among transition metal ions, contributing to enhanced electrochemical performances. The as-prepared CF/CuO/ZIFs (Co_x·Zn_1−xO)@BMOF(Ni–Mn) hybrid nanoflower-like display a high specific capacity of 1249.99 C g⁻¹ at 1 A …

Hidden Scientists/Hidden Creatives, Con Kennedy

Conference Presentations

This presentation discussed how the UN Sustainable Development Goals (SDGs) were integrated into an existing graphic design module delivered on the BA in Visual Communication Design in a joint project with the TU Dublin School of Art and Design, School of Biological, Health and Sports Sciences
 Sustainability and Research Hub
Research, the Ethics and Integrity Office. The project explored underrepresented women in science and graphic design.

Assessment For Sustainable Transportation Systems In Egypt, Hagar Mohamed Fares

Theses and Dissertations

The assessment of a sustainable transportation system poses a significant challenge for local governments, as it dramatically influences the promotion of environmentally friendly modes of transportation with the objective of safeguarding the public's welfare and health in their daily activities. The integration of such assessment should be implemented from the initial stages of system planning to its operational and maintenance phases, particularly in light of the increasing number of urban development activities nationwide. In order to facilitate decision-making processes, it is imperative to establish an efficient rating system that incorporates cultural and social constraints and comprehensively considers the three dimensions …

Embracing The Oregon Way, Tony Salvador Ph.D.

Hatfield Graduate Journal of Public Affairs

No abstract provided.

Policy Diffusion Among Domestic Political Parties In Multiparty Systems: An Analysis Of Election Manifestos Of Indian Political Parties, Payel Nasrin

Hatfield Graduate Journal of Public Affairs

Do political parties adopt each others’ ideas? This research argues that parties are more likely to employ party platforms from electorally successful domestic parties in a multiparty system while seeking public office. Focusing on religious issues as the issue of measurement, I studied 23 election manifestos of 7 political parties that opposed India’s two biggest and historical parties, the Bharatiya Janata Party (BJP) and the Indian National Congress (INC), in the state and national elections during the period of 2004 to 2022. I have analyzed the changes made in the manifesto of these parties to gain insight into the influence …

Lawfare As A Policy Tool In Sino-American Relations: The Case Of Huawei Cfo Meng Wanzhou, Zachary S. Souders

Hatfield Graduate Journal of Public Affairs

Competition between the United States and China is at an all-time high. Despite decades of diplomacy between the East and West, recent trends suggest the two powers are drifting further apart. To understand US-China relations, it is critical to understand major developments as they occur. This paper examines the geopolitical significance of United States v. Meng (2020), an extradition case in which US authorities requested the transfer of Chinese tech executive Meng Wanzhou to American jurisdiction. Despite US policymakers declaring Meng and Huawei to be threats to national security, the eventual dismissal of all charges Meng faced presents a puzzle …

Developing A Social Equity Action Plan: A Pathway Towards Achieving Water Equity In Oregon, Anis Zaman, Wade Hathhorn

Hatfield Graduate Journal of Public Affairs

The Sunrise Water Authority is a public utility serving the City of Happy Valley and surrounding areas of unincorporated Clackamas County. In general, the customers of Sunrise tend to be relatively affluent (by state and federal household income standards) and predominately white, and non-Hispanic by race and ethnicity. Notwithstanding, there are several vulnerable groups within the service population including low-income households, persons of color, children, seniors, immigrants, disabled, and others. Social equity looks to ensure fair and equitable access to public services for all. Following a framework established by the U.S. Water Alliance (known as the ‘3 Pillars’), a preliminary …

Small Rna Signatures Of Acute Ischemic Stroke In L1cam Positive Extracellular Vesicles, Bharti Manwani, Nivetha Brathaban, Abiya Baqai, Yashee Munshi, Hilda W Ahnstedt, Mengqi Zhang, Kajsa Arkelius, Ted Llera, Edilberto Amorim, Fanny M Elahi, Neel S Singhal

Faculty, Staff and Student Publications

L1CAM-positive extracellular vesicles (L1EV) are an emerging biomarker that may better reflect ongoing neuronal damage than other blood-based biomarkers. The physiological roles and regulation of L1EVs and their small RNA cargoes following stroke is unknown. We sought to characterize L1EV small RNAs following stroke and assess L1EV RNA signatures for diagnosing stroke using weighted gene co-expression network analysis and random forest (RF) machine learning algorithms. Interestingly, small RNA sequencing of plasma L1EVs from patients with stroke and control patients (n = 28) identified micro(mi)RNAs known to be enriched in the brain. Weighted gene co-expression network analysis (WGCNA) revealed small RNA …

Strategies And Methods Used By Information Technology Security Professionals To Secure Cloud Access Infrastructure, Oliver Fontem

Walden Dissertations and Doctoral Studies

Cloud computing provides data storage and access services to end users and enterprises but requires effective access controls to protect privileged information from unauthorized and malicious users. Enterprises adopt and integrate cloud computing into their business operations due to its cost-effective and on-demand delivery of computing resources over remote networks but face the challenge of adequate strategies and policies to implement identity and access management securely. Grounded in the Unified Theory of Acceptance and Use of Technology, the purpose of this qualitative multiple case study was to explore strategies used by information technology cybersecurity professionals to improve identity and access …

The Extent That Self-Compassion And Well-Being Predict Burnout In Online Clinical Psychology Phd Students, Tiffany Thompson

Walden Dissertations and Doctoral Studies

Online clinical psychology doctoral students simultaneously experience stressful environments while managing school and life. These stressful experiences can lead to burnout. The concepts of self-compassion and well-being are intertwined with success and burnout. Previous research has indicated that burnout is likely to occur; however, a lack of research has identified specific factors that collectively predict burnout in online clinical psychology doctoral students. Thus, a gap in the current literature regarding burnout using these variables and within clinical psychology PhD students remains to be addressed. This quantitative study investigated the impact of self-compassion and well-being on burnout levels among online clinical …

How Working Women In Healthcare Perceive Public Transportation And Safety, Assaaformbi Bama

Walden Dissertations and Doctoral Studies

Women use public transportation more frequently than do men. However, most of these transportation systems were not constructed with women in mind. Public transportation systems are accountable for securely transporting people to their destinations, as well as upkeeping protective policies to advocate for fearful passengers. The purpose of this qualitative study was to examine women’s perspectives on public transportation.The research question guiding this study asked women to discuss their safety experiences and needs related to existing public transportation policy. Cooley’s theory of transportation and Friedman’s public safety theory formed the conceptual framework for this study. Purposeful sampling was used to …

Law Enforcement Agencies’ Policy Impact On Police Officers’ Mental Health And Wellness: A Content Analysis, Na'shayla M. Nelson

Walden Dissertations and Doctoral Studies

Law enforcement officers are available to answer the calls of citizens in the communities they serve. They are required to deal with some of the most horrific and stressful situations imaginable. The purpose of this qualitative content analysis was to investigate law enforcement agencies’ policies related to adequate provision of early mental health intervention services for law enforcement officers after critical incidents and those policies’ impact on officer mental health. The focus of this study was on law enforcement agencies’ policies from 34 departments from across the United States. The agencies vary in geographic location and size. The results demonstrate …

Rest-Dependent Downregulation Of Von Hippel-Lindau Tumor Suppressor Promotes Autophagy In Shh-Medulloblastoma, Ashutosh Singh, Donghang Cheng, Jyothishmathi Swaminathan, Yanwen Yang, Yan Zheng, Nancy Gordon, Vidya Gopalakrishnan

Faculty, Staff and Student Publications

The RE1 silencing transcription factor (REST) is a driver of sonic hedgehog (SHH) medulloblastoma genesis. Our previous studies showed that REST enhances cell proliferation, metastasis and vascular growth and blocks neuronal differentiation to drive progression of SHH medulloblastoma tumors. Here, we demonstrate that REST promotes autophagy, a pathway that is found to be significantly enriched in human medulloblastoma tumors relative to normal cerebella. In SHH medulloblastoma tumor xenografts, REST elevation is strongly correlated with increased expression of the hypoxia-inducible factor 1-alpha (HIF1α)-a positive regulator of autophagy, and with reduced expression of the von Hippel-Lindau (VHL) tumor suppressor protein - a …

Relationship Between Self-Efficacy And Reading Achievement Among Students With Disabilities, Jessica Maine

Walden Dissertations and Doctoral Studies

Students with disabilities (SWD) often display lower self-efficacy and have a more negative attitude toward reading compared to typically developing peers. Little research has been conducted to measure the relationship between reading self-efficacy and reading achievement of SWD. The purpose of this study was to investigate if reading self-efficacy predicts reading achievement for SWD. Bandura’s theory of self-efficacy guided the research question to evaluate the relationship between reading self-efficacy and reading achievement for SWD. In the present quantitative study, a linear regression analysis was used to assess the predictive relationship between SWDs’ reading self-efficacy, as measured by the Readers’ Self-Perception …

Implicit Biases And Attitudes On Decision Making Among Child Protection Workers, Demetria Turnage

Walden Dissertations and Doctoral Studies

Racial disproportionality remains a historical issue in child welfare systems. It was important for this research to focus on characteristics, professional qualifications, and racial attitudes of those in child welfare decision-making roles to examine how they contributed to racism. To address the gap in the literature, the relationship between years of experience, race/ethnicity, risk of harm, advocacy, racial attitudes, and decision-making among child protection were examined to develop a greater understanding of the ongoing issues and development of reforming the child welfare decision-making process to capture racism among child protection workers. Increasing equality in the child welfare system will benefit …

Nursing Staff Retention, Turnover Intention, And Job Satisfaction In California Nursing Home Facilities, Dr. Selene E.A Laws

Walden Dissertations and Doctoral Studies

Nurse turnover rates in long-term care facilities, specifically in California nursing homes, are among the most pressing issues for the quality of patient care and nursing homes’ operational costs. The purpose of this integrative review was to reveal effective ways to improve job satisfaction, decrease turnover intention, and increase retention rates among nursing staff in California nursing homes. This study focused on the critical issue of turnover in healthcare administration, grounded by Herzberg’s motivation–hygiene theory, which stated that job satisfaction was the fundamental problem causing high staff turnover, and it suggested that hygiene and motivation factors may affect employee turnover. …

Prekindergarten Teachers’ Perspectives Regarding Kindergarten Readiness In Childcare Centers, Adrienne Dominic Stephens

Walden Dissertations and Doctoral Studies

No abstract provided.

A Comprehensive Study On The Impact Of Human Hair Fiber And Millet Husk Ash On Concrete Properties: Response Surface Modeling And Optimization, Naraindas Bheel, Muhammad Alamgeer Shams, Samiullah Sohu, Abdul Salam Buller, Taoufik Najeh, Fouad Ismail Ismail, Omrane Benjeddou

Department of Civil and Environmental Engineering: Faculty Publications

Revolutionizing construction, the concrete blend seamlessly integrates human hair (HH) fibers and millet husk ash (MHA) as a sustainable alternative. By repurposing human hair for enhanced tensile strength and utilizing millet husk ash to replace sand, these materials not only reduce waste but also create a durable, eco-friendly solution. This groundbreaking methodology not only adheres to established structural criteria but also advances the concepts of the circular economy, representing a significant advancement towards environmentally sustainable and resilient building practices. The main purpose of the research is to investigate the fresh and mechanical characteristics of concrete blended with 10–40% MHA as …

The Influence Of Task Process And Task Structure On Transactive Memory Systems And Team Outcomes: A Meta-Regression Analysis, Crystal Fausett

Doctoral Dissertations and Master's Theses

In the rapidly evolving landscape of modern work environments, teams remain a foundation for achieving organizational goals. The efficacy of teams often hinges on the presence of Transactive Memory Systems (TMS), a shared cognitive mechanism that facilitates the distribution and retrieval of specialized knowledge within teams. However, gaps remain in understanding the dynamics of how TMS influences team outcomes, especially in the context of varying task structures, task processes, and TMS operationalization. This dissertation introduces a theoretical model where TMS directly influences team outcomes, with task structure, task process, and TMS operationalization acting as moderators. Meta-analytic results indicate positive effects …

Masthead, Cole P. Grisham

Hatfield Graduate Journal of Public Affairs

No abstract provided.

Message From The Editors, Cole P. Grisham

Hatfield Graduate Journal of Public Affairs

No abstract provided.

Wasted Space: Using Parking Lots & Vacant Land To Improve Neighborhood Completeness, Ryan Martyn

Hatfield Graduate Journal of Public Affairs

This study conducts a spatial analysis of Portland, Oregon, focusing on leveraging underutilized areas like parking lots and vacant land—termed "wasted space"—to improve the city's completeness. Central to this investigation is the concept of a "complete neighborhood," characterized by access to daily necessities within convenient active transportation trip. This comprehensive idea encompasses walkability, equitable access to services, and sustainability.

This paper aims to redefine the concept of a complete neighborhood with precision and delve into its implications. The research looks at five regional, town, and neighborhood centers as defined by the city of Portland. These centers act as pivotal hubs …

Research Update - June 2024, Office Of Research

Research Update

No abstract provided.

Student Research To Be Highlighted At Uab's 2024 Summer Expo, Micah Hardge

Browse All News

No abstract provided.

Physical Effects On The Worst-Case Delay Analysis And Signal Integrity Of Buses And Spirals, Mahmoud Mahany

Theses and Dissertations

Physical effects have a significant impact on the IC design which will be investigated in this thesis. Moving toward advanced technology nodes, magnetic effects become more dominant than capacitive effects. As the dimensions of the devices go down and the interconnect manipulates the circuit behavior more and more. Cross talking and voltage drops are affecting the design heavily, however - going to the full electromagnetic point of view - current return path (CRP) adds significant parasitics to the performance of the chip. Neglecting the CRP gives wrong intuition and simulation of the designs, especially that the environment and surroundings can …

Which Tools Can Aid The Management Of Intangible Cultural Heritage In Community Based Heritage Organizations In Cairo? A Case Study Of Shubra’S Archive, Mienke Zwemstra

Theses and Dissertations

This thesis provides a comprehensive overview of cultural heritage management in Cairo, focusing particularly on intangible heritage and the potential benefits of digital tools in this field. It highlights the marginalization of community-based organizations in the broader narrative of heritage management in Cairo, along with the limited alignment and collaboration between local, national and international heritage institutions. Drawing from ethnographic research conducted at the Shubra’s Archive (SARD), this study identifies the challenges faced by such organizations, including the reliance on volunteers and international funding for mission implementation. It emphasizes the importance of strategic planning and collaboration with municipal and national …

Refugees Insertion And Labor Market Outcomes And: An Analysis Of The Egyptian Context, Salma Ebrahim

Theses and Dissertations

This thesis examines the association between the inflow of refugees to Egypt and labor market outcomes during the period 2012-2018, using data from the Egyptian Labor Market Panel Survey (ELMPS). By applying Difference-in Differences and Probit models, the study compares labor market outcomes between Greater Cairo, characterized by high refugee inflow, and the Suez Canal region, which has a very low inflow. The labor force outcomes analyzed wages, formality and labor force participation. The results indicate that the refugee influx is associated with a decline in wages for both formal and informal workers in the treatment group compared to the …