Digital Commons Network^™

Tunable Methacrylated Decellularized Heart Matrix: A Versatile Scaffold For Cardiac Tissue Engineering, Valinteshley Pierre, Douglas H. Wu, Chao Liu, Elif Ertugral, Chandrasekhar R. Kothapalli, Samuel E. Senyo

Chemical & Biomedical Engineering Faculty Publications

Therapeutic tissue regeneration remains a significant unmet need in heart failure and cardiovascular disease treatment, which are among the leading causes of death globally. Decellularized heart matrix (DHM) offer promising advantages for tissue engineering, including low immunogenicity and seamless integration into biological processes, facilitating biocompatibility. However, DHM is challenged by weak mechanical properties that limit its utility to biomedical applications like tissue engineering. To address this limitation, we functionalized DHM with methacryloyl functional groups (DHMMA) that support UV-induced crosslinking to enhance mechanical properties. By modulating the degree of methacryloyl substitution, a broad range of stiffness was achieved while maintaining cell …

The Rogue Private Company And National Defense Emergencies, Gavin Small

Duke Journal of Constitutional Law & Public Policy Sidebar

This Note explores two overlapping challenges in the United States constitutional and political system. First, the United States increasingly relies on private companies for technologies necessary for national defense. This has given outsized power to a few unelected corporations and people who might have their own incentives that misalign with those of the United States. This is particularly dangerous in an emergency situation where the United States government, not a private company with its own interests, should be making decisions regarding national security. As an example, this Note focuses on the massive role that the company SpaceX plays in the …

Sees Presentation: Small Satellites Power Systems, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "SEES Presentation: Small Satellites Power Systems" from June 12, 2025.

How Education Sats Started, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "How Education Sats Started" from June 12, 2025.

Space Program, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space Program" from June 12, 2025.

Imprudent Mootness: Why Federal Appellate Courts Should Abandon The Doctrine Of Prudential Mootness,, Cooper C. Millhouse

Maryland Law Review Online

No abstract provided.

Predictive Analysis Of Crash Severity And Modeling Of 85th Percentile Speed For Rural Highways Of Arkansas Using Artificial Intelligence (Ai), Sagun Basel

Student Theses and Dissertations

Crash severity is a significant aspect of transport safety as its contributing factors assist engineers and designers in designing safer roads. The focus of this project is to predict crash severity, analyze crash parameters, and modeling of the 85th percentile speed (V85) selected rural roads (i.e., Interstate-555, East Johnson Avenue Highway, and Red Wolf Blvd) in Arkansas, using Artificial Neural Network (ANN) models. MATLAB® was used to predict the V85 and compare it with the actual V85 collected from field instrumentation. Besides the speed data, weather (e.g., rainfall), road geometry, light conditions, and traffic volume were used as input in …

Teacher Perspectives On The Impact Of School-Based Mental Health Services On Academic Performance, Attendance, And Behavior, Carol Ingram

Student Theses and Dissertations

This qualitative instrumental case study explores teacher perspectives on the impact of school-based mental health services on student academic performance, attendance, and behavior in a northern Mississippi school district. Understanding their influence on key student outcomes is crucial given the increasing integration of school-based mental health services in educational settings. Framed by the Collaborative for Academic, Social, and Emotional Learning (CASEL) five core competencies, this study examines how school-based mental health services support these competencies through teachers' insights. Data were collected using criterion sampling, focusing on eight high school teachers through focus groups, individual interviews, and a review of the …

A New Model For Educational Program Assessments Using Automated Collective Concept Maps, Andrew R. Paullin

Master's Theses (2009 -)

This paper presents: Epistemological principles; the origins and theoretical foundations of concept maps; the current state of related works; the contributions, methods, results, and future road map of this research; and A New Model for Educational Program Assessments. An understanding that knowledge results from an evolution of cognitive structures enables a scientific approach to enhance the efficiency of learning. Building on prior works, this research provides a novel algorithm and tool to automatically create Collective Concept Maps from Individual Concept Maps by utilizing a dictionary, thesaurus, Natural Language Processing, Machine Learning / Artificial Intelligence, and domain expertise. Abstraction Filters enable …

Arkansas High School Teacher Perceptions About Declining Enrollment And Learning Experiences In Advanced Science Courses, Tanya Lynette Ruble

Student Theses and Dissertations

Student enrollment in advanced high school science courses in Arkansas, specifically Chemistry, Physics, AP Biology, AP Chemistry, and AP Physics has declined since 2014. Colleges across the nation recommend that students take Biology, Chemistry, and Physics in high school to prepare for rigorous science majors in college. Decreased enrollment in these subjects can lead to fewer college science majors and impact the preparation of students for careers in STEM fields such as engineering and healthcare. This qualitative phenomenological study utilized three research questions to explore the reasons for the decline in advanced high school science course enrollment in Arkansas. It …

Strengthening Global Health Education In The Uae: Assessing The Current Landscape And Future Directions, Ali Artaman, Hillani T. Bekele, Ross Millar

All Works

Global health is a growing area of interest for the United Arab Emirates (UAE). Given its location in the Middle East and its geographical proximity to developing sub-Saharan countries, the country is in a strategic position to contribute to global health agendas. Yet despite an increasing emphasis on global health policy, the availability of global health education programs at UAE universities remains limited. The aim of this Perspective is to raise awareness and understanding about the importance of the issue. Reflecting on the current landscape, it argues that it is crucial for higher education institutions in the UAE to better …

The Dpe Shortage And How To Fix It, Paul Dye

Honors Theses

The following content delves into the current issues surrounding the FAA’s designated pilot examiner (DPE) system, which, while functional, is increasingly strained by growing demand and outdated policies. Through firsthand experience, survey data, and analysis of current practices, the paper emphasizes some of the most pressing problems, including scheduling inefficiencies, inconsistent examiner expectations, manual eligibility checks despite the widespread use of digital logbooks, and a lack of meaningful oversight or feedback mechanisms for both DPEs and CFIs.

A major focus is the outdated scheduling process, which remains largely decentralized and prone to double-booking, cancellations, and long wait times, especially for …

Transmodal Family Literacies: Familial Cariño Practices Sustaining Children's Bilingualism And Biliteracy Development Heather L. Reichmuth And Lucía Cárdenas Curiel, Heather Reichmuth

Faculty and Staff Scholarship

This chapter explores the transmodal family literacy practices of two bilingual families (Korean and Mexican) residing in the US. The chapter opens with a vignette on the role-playing support that the Korean mother started to help her son's English development. The literature review focuses on multimodal texts and family literacies, while the theoretical framework highlights translanguaging, transmodal, and biliteracy practices. Findings from this study suggest that through transmodality and familial care, the mothers supported their children's bilingual and biliteracy development in the home by using role-play, non-fiction books, and visual artistic expressions. This study suggests that teachers can draw on …

Unh Ocean Engineering Student Earns Prestigious Dod Smart Scholarship, Brooks Payette

UNH Today Archive

No abstract provided.

Small Business Leaders’ Strategies To Improve Employee Retention By Increasing Flexible Work Arrangements, Allen M. Looney

Walden Dissertations and Doctoral Studies

Employee retention is a critical challenge for small business leaders in the finance and insurance sector. These leaders are concerned with identifying effective strategies to retain employees to avoid turnover costs and maintain operational stability. Grounded in transformational leadership theory, the purpose of this qualitative pragmatic inquiry study was to identify and explore effective flexible-work-arrangement (FWA) strategies that small business leaders in the finance and insurance sector used to retain employees. The participants included six small business leaders in the finance and insurance sector in the Southeast United States with successful experiences using such strategies. Data were collected from semistructured …

Remote Sensing Of Seismic Signals Via Enhanced Moiré-Based Apparatus Integrated With Active Convolved Illumination, Adrian A. Moazzam, Anindya Ghoshroy, Durdu Güney, Roohollah Askari

Michigan Tech Publications

The remote sensing of seismic waves in challenging and hazardous environments, such as active volcanic regions, remains a critical yet unresolved challenge. Conventional methods, including laser Doppler interferometry, InSAR, and stereo vision, are often hindered by atmospheric turbulence or necessitate access to observation sites, significantly limiting their applicability. To overcome these constraints, this study introduces a Moiré-based apparatus augmented with active convolved illumination (ACI). The system leverages the displacement-magnifying properties of Moiré patterns to achieve high precision in detecting subtle ground movements. Additionally, ACI effectively mitigates atmospheric fluctuations, reducing the distortion and alteration of measurement signals caused by these fluctuations. …

Can A Picture Paint A Thousand Words? Visualising Variety In Challenge-Based Learning, Clare Gormley, Hyowon Lee, Deiric Ó Broin, Cliona Mcparland, Lily Girme, Ben Mallon, Aideen O'Dochartaigh, Anthony Downes

Irish Journal of Academic Practice

Challenge-Based Learning (CBL) is an educational approach that involves students engaging with peers, academics, and external stakeholders to collaboratively investigate and develop solutions to real-world challenges of urgency and significance. One of the strengths of CBL is that it is a flexible framework that can be adapted to suit the educational discipline and local context. As CBL becomes applied in more disciplines, there are opportunities to learn from those implementing it which can stimulate new ways of approaching certain aspects. Staff members developing and disseminating guidance to support CBL at one Irish university therefore initiated a project to co-develop a …

Re: Approval Letter For The Draft Final Butte Reduction Works (Brw) Air Monitoring For Interim Demolition Activities – Phase I Data Summary Report (Dated March 21, 2025), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For The Final Butte Reduction Works (Brw) Smelter Area Waste Remediation And Contaminated Groundwater Hydraulic Control Site Air Monitoring Quality Assurance Project Plan (Qapp) For Interim Demolition Activities (Dated May 19, 2025), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

A Survey On Immersive Cyber Situational Awareness Systems, Hussain Ahmad, Faheem Ullah, Rehan Jafri

All Works

Cyber situational awareness systems are increasingly used for creating cyber common operating pictures for cybersecurity analysis and education. However, these systems face data occlusion and convolution issues due to the burgeoning complexity, dimensionality, and heterogeneity of cybersecurity data, which damages cyber situational awareness of end-users. Moreover, conventional forms of human–computer interactions, such as mouse and keyboard, increase the mental effort and cognitive load of cybersecurity practitioners when analyzing cyber situations of large-scale infrastructures. Therefore, immersive technologies, such as virtual reality, augmented reality, and mixed reality, are employed in the cybersecurity realm to create intuitive, engaging, and interactive cyber common operating …

Full Issue, Arianna Medina

Western Journal of Orthopaedics

No abstract provided.

Front Matter, Arianna Medina

Western Journal of Orthopaedics

No abstract provided.

Arbitrating With Indian Tribes: Separability, Tribal Sovereign Immunity, And Exhaustion Of Tribal Remedies, Paul F. Kirgis

New Mexico Law Review

Indian tribes have emerged as significant contributors to the national and regional economies, notably through industries such as gaming, natural resource extraction, technology, and consumer lending. This increasing commercial activity brings with it increasing commercial disputes. Both Indian tribes and their nonmember counterparts need a fair and reliable forum to ensure that agreements are performed, loans repaid, and avoidable harms compensated. But the complex legal landscape of tribal sovereignty and jurisdiction complicates dispute resolution involving tribes. Tribes’ status as sovereign entities raises challenging issues of federal and state court jurisdiction, tribal sovereign immunity, and exhaustion of tribal remedies. Arbitration offers …

Unfinished Business: Twenty-First Century Questions Posed By Ambiguities In The Upper Colorado River Basin Compact And The Law Of The River, Eric Kuhn, Katherine H. Tara, John Fleck

New Mexico Law Review

The Law of the River, particularly those components relating to Upper Colorado River water allocation, usage, and measurement, is rife with ambiguities and uncertainties. In the twenty-first century, facing a future with less water, these ambiguities pose serious problems. The ongoing process for the development of the Post-2026 Colorado River Operating Guidelines presents an ideal opportunity to address these issues. This Article gives a brief history of the Law of the River, with an eye toward the origins of the stream depletion theory, beneficial consumptive use, and tribal water allocations. The authors then explore potential approaches to addressing the challenges …

Walking The Line On Safety And Free Speech: Sidestepping First Amendment Challenges To Median Bans, Taylor J. Black

New Mexico Law Review

In 2021, the Tenth Circuit held a ban targeting pedestrians on street medians in Albuquerque, New Mexico unconstitutional under the First Amendment. Citing a crisis of pedestrian fatalities, Albuquerque has since promulgated a new pedestrian-safety ordinance with an adjusted median ban that prohibits pedestrians from sitting or standing on certain street medians. This ban not only fails to increase pedestrian safety but also arbitrarily blames the city’s poorest residents and poses a threat to First Amendment freedoms. Because the city cannot produce case-specific evidence to show that the ban is narrowly tailored to ameliorate a nonspeculative harm, the current ban …

Formulation And Assessment Of Indomethacin Nanoparticles For Dissolution Improvement, Malath Hatif Oudah, Fatima Mohamed Hussian Wais

Maaen Journal for Medical Sciences

Indomethacin is a nonsteroidal anti-inflammatory drug useful to reduce pain, rheumatoid arthritis and fever. Indomethacin, a Class II drug characterized by high permeability and low solubility. The goal of study was to develop Indomethacin nanoparticles by nanoprecipitation method and subsequently investigate if this nanoparticle formulation leads to enhanced solubility and a faster dissolution rate. Nine different formulas were prepared by using three different polymers (HPMC E50, PVP- K30, and poloxamer -188) in three different drug: polymer ratio 1:1, 1:2 and 1:3. Different types and concentrations of polymer used in this study, and the results reveal and found to have a …

Bridging Borders: Exploring Place Attachment As Spatial Lived Experiences Of Expatriate Communities In Dubai, Uae, Gopika Balakrishnan

Thesis/ Dissertation Defenses

Dubai, a global city where expatriate communities make up the majority of the population, offers a unique context to explore how urban environments are both shaped by and shaping people’s experiences. With rapid growth of migration and deep cultural diversity, the city exemplifies how top-down planning and bottom-up lived experiences interact to influence how individuals form emotional and spatial connections to place. This dissertation investigates the concept of place attachment through the lens of spatial behavior, lived experience, and inherited practices, with a focus on expatriate communities in Dubai. It asks: How do expatriate communities in Dubai experience and express …

New Contrast-Based Metrics For Roadway Lighting Design, Amira R. Abouelhamd

Thesis/ Dissertation Defenses

Roadway lighting standards specify design targets of horizontal illuminance or luminance at the roadway surface for various roadway types. Although the luminance and illuminance method to roadway lighting standards incorporate some factors that affect human visibility, other important factors, such as the target’s contrast and size, are not examined in these standards. Roadway lighting standards should consider how the human visual system detects objects and provides comfortable approaches to improve visibility for drivers. As luminous contrast has a crucial impact on visibility measures, recent studies have been directed to propose new approaches that utilize it. This research aims to propose …

Calibration And Systems Engineering Collaboration, John Wilson

The Characterization and Radiometric Calibration for Remote Sensing Annual Meeting (CALCON)

Systems engineering and calibration engineering are critical to the efficient development, production, and operation of complex systems. Systems engineering provides the framework for the system lifecycle, ensuring stakeholder needs are met through integrated solutions. Calibration engineering ensures the accuracy, reliability, traceability of measurement, and compliance with standards. Coordination between system engineering and calibration ensures that instrumentation, control systems, and system performance are enabled. As the lifecycle coordinator, systems engineering relies on calibration engineers to reduce risks, optimize development, and ensure operational success.

However, the relationship between these disciplines is often poorly coordinated, as noted in tabletop discussions at CALCON 2024. …

Nist Recent Advances In Support Of Radiometric Calibrations, Michelle Stephens

The Characterization and Radiometric Calibration for Remote Sensing Annual Meeting (CALCON)

No abstract provided.