Digital Commons Network^™

Absence Of Superconductivity In The Lightly Doped Hubbard Model, Jodie Roberts, Rudolf Torsten Clay

Research Experiences for Undergraduates in Computational Methods with Applications in Materials Science

The mechanism of superconductivity (SC) in high critical temperature cuprate superconductors remains an unsolved problem. The simplest electronic model of cuprate superconductors is the one band Hubbard model. It models copper atom positions with lattice sites, omitting oxygen atoms for simplicity, and separates the Hamiltonian into hopping (t,t) and interaction (U) components. The simplest Hubbard model only considers nearest neighbor hopping, t. To account for overlap between oxygen orbitals also requires next nearest neighbor hopping, t'. Exact solutions of the model are computationally prohibitive to find for large systems. Quantum Monte Carlo (QMC) methods such as Constrained Path Monte Carlo …

Neural Network Prediction Of Titanium-Aluminum Mechanical Properties, Carter Reed, Kip Barrett

Research Experiences for Undergraduates in Computational Methods with Applications in Materials Science

Technological progress is strongly coupled with our understanding of materials. In fields like aerospace, titanium-aluminum (Ti-Al) alloys are of particular interest for their strength-to-weight ratio and high-temperature performance. The ability to accurately predict these characteristics as a function of composition and processing conditions would reduce research costs by tuning the performance to the application's needs before producing the physical material. The mechanical properties, and performance by proxy, of a material are dependent on the microstructure of and the interatomic interactions within the material. Thus, we validate the rapid artificial neural network (RANN) potential of the titanium-aluminum binary system for the …

Unveiling The Shadows: Exploring The Roles Of The Dark Web And Encrypted Messaging Apps In Facilitating Online Terrorist Networks, Eziho Promise Ogele

Journal of Strategic and Global Studies

The paper examines the pivotal roles of the Dark Web and encrypted messaging apps in enabling online terrorist networks. These platforms have become essential tools for extremist groups, empowering them to communicate, coordinate, and share intelligence securely. The Dark Web, a hidden portion of the internet, provides a secure conduit for terrorist organizations to emerge, operate, and coordinate activities anonymously. This digital haven enables terrorists to share resources, plan operations, and execute attacks as part of their secret operations strategy. Encrypted messaging apps, such as Telegram and WhatsApp, offer an additional layer of security, allowing terrorists to send messages anonymously …

Highly Contaminated Sediments From The Gowanus Canal (New York) Superfund Site: An Environmental Forensic Approach, Michael A. Kruge, Kevin K. Olsen, Eric A Stern, Maria Mastalerz, Albert Permanyer

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

The 2.5 km long Gowanus Canal (Brooklyn, NY, USA) is a severely contaminated urban waterway dating from the mid-19th century, listed as a US Environmental Protection Agency (USEPA) Superfund site since 2010. Applying an environmental forensics approach to the extensive USEPA data set, we detect systematic variations in parent PAH ring number distributions in the canal sediments, as well as an extraordinary enrichment in organic carbon. We subjected a supplemental sample set to a more detailed analysis by quantitative pyrolysis-GC-MS, Rock-Eval pyrolysis, and organic petrology. With these sensitive methods, we can confirm the alkyl-PAH fingerprint of coal tar (a legacy …

Assessing Effectiveness Of Runnel Restoration In New England Salt Marsh Habitats, David M. Burdick, Grant Mckown, Gregg Moore, Jenny Gibson, Wenley Ferguson, John Herbert, Nancy Pau, Susan Adamowicz, Geoff Wilson

Faculty Publications

Rising sea levels that increase flooding in salt marshes recovering from hydrologic impairments is reducing nesting habitat for salt marsh sparrows. Abandonment of colonial farming practices (1600s through 1900s) has resulted in large, waterlogged basins characterized by shallow depressions (pannes) dominated by short-form Spartina alterniflora and unvegetated megapools that are subsiding. A relatively new technique designed to provide regular tidal flooding and drainage to the waterlogged basins that have formed on the marsh is runnelling – creation of shallow hydrologic features on the marsh surface. Will runnels result in revegetation of pannes and pools with productive perennial grasses that are …

Using Herpetofauna To Determine Wetland Health And Function In The Red River Watershed, Shelby Rodriguez-Edwards

Biology Theses

Reptiles and amphibians are commonly used indicator species in wetlands because of their increased sensitivity to environmental conditions and use of both aquatic and terrestrial habitats. Herpetofauna can reflect wetland ecological functionality through their community composition and responsiveness to environmental stressors. This study evaluated reptile and amphibian communities in natural and ACEP-WRE wetlands within the Red River Watershed of northeastern Texas and Northwestern Louisiana to assess whether restored wetlands support herpetofaunal assemblages compares to their natural counterparts. Fifteen wetlands were surveyed from February to June 2024 using visual encounter surveys, call surveys, and standardized trapping methods to document species richness …

Community-Driven Stakeholder Engagement Strategies In Public Health Projects, Kelia N. Olughu

Harrisburg University Dissertations and Theses

Community-driven stakeholder engagement is vital for the success and sustainability of public health initiatives, yet its implementation is often hindered by significant challenges. This qualitative study explored the strategies, barriers, and lessons learned in stakeholder engagement within public health projects. Guided by Project Stakeholder Management from the PMBOK Guide and the Social-Ecological Model (SEM), this research conducted a thematic analysis of in-depth, semi-structured interviews with eleven public health professionals. The findings reveal that effective engagement strategies include early and continuous involvement, co-creation of solutions, and building on existing community trust. Key challenges identified were overcoming deep-seated community mistrust, navigating complex …

Digital Marketplace For Mitigating The Negative Impacts Of Mass Tourism, Raza Noman

Journal of King Abdulaziz University: Economics and Administration

Mass tourism is a significant and rapidly expanding sector worldwide; however, it has resulted in numerous negative impacts. Therefore, this study proposes and evaluates an economically viable solution to mitigate these negative impacts. The proposed solution is a digital marketplace that allows local residents to offer freebie e-coupons to tourists at overcrowded locations. To assess this marketplace, an extended model of the Technology Acceptance Model (TAM) is designed as a conceptual framework. This model fills a gap in existing literature by focusing on factors that can impact socially and environmentally conscious tourists. To collect the required data, an online questionnaire …

Biotechnology Research Incubator For Teachers (Brite) Pilot Program: Advancing Technology Research Education For Secondary School Teachers, Michael Nguyen, Yuan Yao, Joel Sederstrom, Cynthia C Hallmark, Sherita Love, Fred A Pereira, Shixia Huang

Faculty, Staff and Students Publications

Introduction: Advanced technologies have transformed diagnostics and therapeutics, improving disease management. Secondary school educators play a vital role in fostering critical thinking, problem-solving, and inspiring students in science, technology, engineering, math, and medicine (STEMM) innovations. Comprehensive teacher training enhances education delivery and ensures long-term advancements in science education, empowering future generations.

Materials and methods: We launched the Biotechnology Research Incubator for Teachers (BRITE) pilot program to train secondary school teachers. This 3-week program immerses teachers in Advanced Technology Core facilities, providing hands-on experience with cutting-edge technologies, such as protein array technology, next-generation sequencing, and flow cytometry. It also offers collaborative …

Icipe Spotlight Magazine 2025, International Centre Of Insect Physiology And Ecology (Icipe)

icipe Newsletters

Join us through a journey of a tapestry of voices, landscapes and possibilities. Get a copy of our inaugural edition of the icipe Spotlight magazine, a publication that is especially close to our hearts. The magazine illuminates our scientific breakthroughs and the lives they touch. While we celebrate our contribution to the global knowledge hub, our deepest fulfillment is in witnessing how the Centre’s knowledge and innovations transform lives and foster resilience.

Re: Comment Letter For Clark Tailings Consolidated Waste Management Area (Ctcwma) Site Investigation Quality Assurance Project Plan Revision 01 (Dated June 6, 2025), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Burnout Of Physical Therapist: Impact Of Agitated Behaviors In The Traumatic Brain Injury Population, Francine Sage-King

Seton Hall University Dissertations and Theses (ETDs)

The purpose of this study was to investigate the impact patient agitation post traumatic brain injury (TBI) has on physical therapist burnout and the factors that contribute to its presence. Therefore, the following research questions were posed: 1) What is the prevalence of burnout among physical therapists (PTs) providing direct patient care for patients with post-TBI agitation? 2) Is there a relationship between clinical setting and 3) percentage of direct patient care and PT burnout? 4) How do scores of resilience differ between those that do and do not have burnout? And 5) What work system factors do PTs working …

Modeling Steady-State Navier-Stokes Flow Using Structure-Preserving Truncated Hierarchical B-Splines, Daira Sofia Velasco Vega

Theses and Dissertations

Accurate simulation of incompressible steady-state fluid flow is critical for engineering applications where mass conservation, numerical stability, and geometric fidelity are essential. This thesis develops and analyzes a structure-preserving isogeometric framework for steady-state incompressible Navier"“Stokes simulations using truncated hierarchical B-splines (THB-splines). By leveraging divergence-conforming spline spaces designed to keep the fluid's divergence exactly zero based on the mathematical de Rham complex, this method ensures the fluid remains incompressible everywhere without needing extra stabilization techniques. The use of THB-splines allows the mesh to be refined locally in areas where the flow changes sharply. It still keeps the solution smooth and ensures …

Translating Soil Salinity To Agricultural Salt Stress: Key Salt-Tolerance Mechanisms For Agrohydrologic Models, Josh Gottlieb, Dvir Ochman, Cheng-Wei Huang, Jean-Christophe Domec, Nimrod Schwartz, Samantha Hartzell

Civil and Environmental Engineering Faculty Publications and Presentations

Summary:

Salt stress has a detrimental impact on crop yield and survival rates, which salt-tolerant cultivars can resist through numerous adaptive mechanisms. Most models of salt stress impacts on productivity and water use employ empirical or simplified schemes to represent salt-adaptive traits. However, with an increased understanding of these physiological tolerance mechanisms and emergent measurement techniques for monitoring key salinity dynamics, the potential for developing mechanistic agrohydrological models of the soil-plant-atmosphere continuum has grown. This perspective highlights strategies for modeling salt tolerance mechanisms, including root system architecture adaptation, salt filtration, adaptation of plant hydraulics, ion compartmentalization, and stomatal responses, to …

Tackling Data Quality Challenges In Remote Sensing: Solutions For Reliable Urban Heat Island Analysis, Wei Xia, Aqil Tariq, Hesham El-Askary, Rana Waqar Aslam, Elgar Barboza, Dmitry E. Kucher, Youssef M. Youssef, Habib Kraiem

Mathematics, Physics, and Computer Science Faculty Articles and Research

Urban heat islands (UHIs) pose critical challenges to public health, energy demand, and environmental sustainability, particularly in rapidly expanding urban regions. This study examines the complex relationship between building configurations and integrated green spaces, as well as their combined impact on thermal regulation. It focuses on addressing data quality issues commonly encountered in remote sensing applications. Using high-resolution multispectral and thermal imagery, we developed an integrated modeling approach that captures the collective influence of built form and green infrastructure on urban microclimates. A key finding is the significant linear inverse relationship between green space coverage and land surface temperature, underscoring …

Conceptualizing The Limits Of The Use Of Generative Ai In Economic Analysis Via A Deep Meaning Of Habs, Abderrazak Said Belabes

Journal of King Abdulaziz University: Islamic Economics

Generative AI is increasingly integrated into economic analysis by researchers, economic institutions, and companies specializing in real-time forecasting through macroeconomic intelligence. This development poses a challenge to specialists in the analysis of economic life in Muslim societies. In this research, I ask the following question to ChatGPT: What is the relationship between the Zamzam well and the Kaʿaba as ḥabs, and what are your sources? After showing the limits of the AI chatbot's response, both in terms of the answer to the question and in terms of the sources on which it claims to rely, the research explains why …

Developing A Computational Pipeline For Microstructure-Based Modelling With Exaca And Evpfft, Lizzy Beall, Eric Collins, Jacob Moore

Research Experiences for Undergraduates in Computational Methods with Applications in Materials Science

The microstructure of a metal determines its properties and by understanding the grains that make up that structure, we can predict the behavior of that material. However, it can be difficult and costly to view the microstructure of a metal, especially since the microstructure is highly dependent on the manufacturing history of the part. By computer generating the microstructure of a material, we can better understand its properties. Exascale Cellular Automata (ExaCA) can generate a microstructure for a metal sample given its thermal history and Elasto-Visco Plastic Fast Fourier Transforms (EVPFFT) can model the response of the crystals in a …

Developing A Neural Network For Prediction Of Interatomic Energies In Iron-Manganese Alloys, Robert D. H. Race, Doyl Dickel, Hala Ben Messaoud

Research Experiences for Undergraduates in Computational Methods with Applications in Materials Science

Machine-learned interatomic potentials (ML IAP) for alloy systems have been sought after due to their ability to reduce experimentation costs and time, accelerating alloy development and discovery. However, the explicit inclusion of magnetism in these potentials has been both a difficult and important problem to solve, due to the complexity of spin-lattice dynamics and its significance in the properties of magnetic alloys. We present here the development of an explicitly magnetic Fe-Mn ML IAP using a physics informed neural network (PINN) extension of the rapid artificial neural network (RANN) formalism. It is shown that the potential is capable of reproducing …

Investigating The Defect Behavior And Electronic Properties Of Formamidinium Lead Bromide Perovskite Through Machine Learned Interatomic Potentials, Rachel Lee, John Michael Lane, Woodrow Wilson, Neeraj Rai

Research Experiences for Undergraduates in Computational Methods with Applications in Materials Science

Formamidinium lead bromide (FAPbBr3) perovskite crystals display promising optoelectronic properties, making them attractive materials for solar cells, light-emitting diodes, and photoelectrochemical devices. In this study, computational methods are applied to investigate the effects of point defects—vacancies, interstitials, Frenkel, and Schottky—on the electronic structure of FAPbBr3 bulk and nanoplatelet crystals. Traditional computational methods, such as density functional theory (DFT), are computationally expensive and thus limited to small systems and short time scales. To characterize and simulate larger systems over longer time periods at reduced computational costs, machine learned interatomic potentials (MLIPs) are developed with MACE, a message passing neural network. The …

Full Issue

BYU Law Review

No abstract provided.

Popular Originalism, Thomas G. Donnelly

BYU Law Review

Scholars are obsessed with the Roberts Court’s recent turn to history and tradition. But another source of authority has also emerged as an important feature of the Roberts Court’s approach to constitutional cases. In previous work, I have referred to this source of authority as popular meaning. While original meaning identifies the best reading of the Constitution’s text at the time of its ratification, popular meaning draws on sources of authority outside the courts to capture the constitutional views of the American people today. In this Article, I demonstrate how interpreters might draw on the Constitution’s popular meaning to help …

Making Intra-Urban Monitoring ‘A Walk In The Park’: A Mobile Monitoring Approach For Assessing Pedestrians’ Environmental Conditions, Cho Kwong Charlie Lam, Halat Alnaqshabandy, Shaun Lewin, Jack Morewood, Xiaoxiong Xie, Steve Goodhew

School of Art, Design and Architecture

Heat island effects and air pollution influence urban climates and air quality, impacting pedestrians’ health, comfort, and well-being. This study develops and pilots the Trolley-based Environmental Monitoring System (TEMS), which was validated in a medium-sized city in the UK. Three monitoring campaigns took place during May and June 2024. The mobile transects covered the city's built and natural environments, including high-density university buildings, museum precinct, medium-density dwellings, highways, and two parks. Appropriate apparatus was specified to monitor environmental variables integrated into a trolley that was easily operated by a single pedestrian. Fisheye photographs were taken to calculate the sky view …

Effective And Eco-Friendly Strategies To Control Birds In Industrial Estate, Jasti Rahayu, Upik K. Hadi, Susi Soviana

Journal of Environmental Science and Sustainable Development

Bird infestations in industrial areas can cause infrastructure damage, contamination, and health risks. Despite these impacts, they are rarely addressed in environmental management strategies. At the Kaltim Industrial Estate (KIE) in Bontang, East Kalimantan, synanthropic bird species that thrive in human-altered environments have become persistent nuisances, particularly because of structural opportunities for roosting and altered ecological conditions. To address this issue, this study applied Integrated Pest Bird Management (IPBM), a non-lethal and environmentally friendly approach that combines species identification, behavior analysis, and targeted deterrents. IPBM was selected for its adaptability to industrial settings and its alignment with sustainable development goals. …

Green Innovation: Optimizing The Potential Of Plastic Waste As An Alternative To Fossil Fuels, Hani Alfiyani, Evi Gusmayanti, Nelly Wahyuni

Journal of Environmental Science and Sustainable Development

Plastic bag waste has the potential to be converted into alternative fuel oil through the pyrolysis method. This study applies the principle of thermal pyrolysis, conducted without oxygen, at the Edelweis Integrated Waste Management Site. The purpose is to analyze the characteristics of fuel oil derived from plastic bag waste based on parameters such as density, viscosity, calorific value, and acid number, as well as to estimate the potential fuel oil yield from plastic bag waste in Pontianak City. The results show that the density, viscosity, and calorific value of the produced fuel oil meet or closely approach standard requirements. …

Coal Mining Reclamation: Lessons Learned From Tropical And Subtropical Countries, Priyaji Agung Pambudi, Suyud Warno Utomo, Roni Setyo Handoko

Journal of Environmental Science and Sustainable Development

This study addresses the persistent environmental challenges associated with coal mining in tropical and subtropical regions, where complex microclimates and ecological variability hinder effective reclamation. Despite the increasing global coal demand, comparative cross-country insights remain limited. This research fills the gap by evaluating the best practices. This study employs a qualitative methodology with a comparative case study design, uses systematic literature review to evaluate ecology based reclamation policies and implementation practices. Data were sourced from peer-reviewed journals from Scopus and the Web of Science database and institutional reports, and analyzed using McHarg’s landscape ecology theory to evaluate reclamation policies, ecological …

The Crab Silvofishery System As A Conservation Strategy In Mangrove Restoration Area: A Case Study On The Coast Of Banyuasin, South Sumatra, Apriyanto Apriyanto, Rujito Agus Suwignyo, Tengku Zia Ulqodry, Sarno Sarno, Riris Aryawati, Muhtadi Muhtadi, Herry Purnomo, Beni Okarda

Journal of Environmental Science and Sustainable Development

Anthropogenic activities such as logging and converting mangrove forests into plantations have degraded coastal ecosystems and reduced their ecological stability. Silvofishery is a restoration system that balances the ecological and economic functions of mangroves. In Marga Sungsang Village, South Sumatra, mangrove restoration was integrated with mud crab (Scylla spp.) cultivation through a crab silvofishery system. This study aimed to analyze the contribution of mangrove restoration with a mud crab silvofishery system to mud crab growth. The study was conducted from August 2024 to January 2025. Growth parameters included carapace length, width, and body weight. Analyses covered absolute growth …

Stakeholder Perspectives On Extended Producer Responsibility (Epr) And E-Waste Management: A Case Study Of China, Viola Dheena Pongajow, Yufei Qin, Kaihua Xu, Siliang Liu, Zongliang Zhang, Fangyang Liu

Journal of Environmental Science and Sustainable Development

Electronic waste (e-waste) is increasing at an unprecedented rate, with China as the world’s largest contributor. Extended Producer Responsibility (EPR) has emerged as a key policy tool in China's effort to control the environmental and health impacts of e-waste. However, existing research on EPR tends to focus narrowly on government perspectives and policy design, overlooking how industries, associations, and researchers perceive and implement the system. This study addresses this gap by exploring the stakeholder dynamics within China’s formal e-waste management ecosystem. It hypothesizes that stakeholder perceptions diverge according to their roles, financial incentives, and policy understanding, influencing EPR’s effectiveness in …

Interior As Ecosystem, Paramita Atmodiwirjo, Yandi Andri Yatmo

Interiority

The idea of interior as an ecosystem views the emergence of interior as a dynamic and relational environment. Rather than viewing the interior as a static or enclosed environment, the ecological perspective considers the interior as an ecosystem, constructed by the systems of relations that involve a multiplicity of actors and entities. This issue of Interiority presents the emergence of various interior occupation and adaptation models that have emerged as an integral part of the ecosystem. The collection of articles in this issue presents a range of cases, ranging from traditional, modern, to contemporary lifestyles and contexts. The works demonstrate …

Future Interior Of The Past: An Air Terminal Comes Of Age At Detroit-Willow Run, Joss Kiely

Interiority

After the Second World War, manufacturing plants were no longer needed for wartime production levels, prompting the closure and repurposing of industrial facilities that became obsolescent overnight across the United States and in the manufacturing region of Southeastern Michigan. Located twenty miles west of Detroit, the Willow Run airfield in Ypsilanti was one such case. Best known for the massive B-24 Liberator manufacturing plant designed by Albert Kahn that opened in 1942 as Air Force Plant 31, the airfield played a key role in ending the war. Just to the south, a Kahn-designed hangar was loosely repurposed in 1946–1947 as …

Flex-Spatialities: Interior Spaces, Play, And Fantasy, Camilo Lozano-Rivera

Interiority

This article examines how interior spaces in the digital age have evolved into flexible, adaptive environments shaped by technological mediation and shifting everyday practices. Focusing on smart homes and home offices, this article introduces the concept of flex-spatiality to describe how these spaces continually reconfigure in response to changes in needs and digital interfaces. Grounded in Gregory Bateson’s (1972) theory of play and fantasy, the study explores how interior spatiality operates on two levels: as a locus for expressing identities and as a structure for organising social interaction. Through Bateson’s distinction between metalinguistic and metacommunicative functions, flex-spatiality is framed as …