Digital Commons Network^™

Effect Of Chromium Doping On The Uv- And Sunlight-Driven Photocatalytic Performance Of Srtio3, Ro’Ikhatul Jannah, Dianisa Khoirum Sandi, Fahru Nurosyid, Risa Suryana, Didier Fasquelle, Yofentina Iriani

Applied Environmental Research

Chromium (Cr)-doped strontium titanate (SrTiO3, STO) photocatalysts with compositions of SrTi1-xCrxO3 (x = 0, 5, and 10%) were prepared via the coprecipitation method. This study aimed to investigate the effects of Cr doping on structural, morphological, and optical properties. Furthermore, this work aimed to examine the photocatalytic performance of pure and Cr-doped STO against methylene blue (MB) degradation under ultraviolet (UV) and sunlight exposure. X-ray diffraction confirmed the formation of the cubic STO phase and the insertion of the Cr dopant in the STO structures. Furthermore, Cr doping reduced the lattice constant, crystallite size, and average particle size and narrowed …

Fabrication Of Acid-Modified Corn Plant By-Product-Based Biochar For Efficient Adsorption Of Sulfamethoxazole From Aqueous Solutions, Thi An Hang Nguyen, Thi Duyen Le, Thi Hang Bui

Applied Environmental Research

Antibiotic pollution is of great interest owing to growing concerns about antibiotic resistance worldwide. This study aims to fabricate acid-modified biochar (CBM-A) from corn plant byproducts (CRs) for sulfamethoxazole (SMX) adsorption in aqueous solutions. CBM-A was synthesized via pyrolysis at 700 °C and modified with 14% H3PO4. Kinetics, isotherms, and thermodynamics were investigated in combination with material characterization to elucidate the adsorption behaviors and mechanisms. The results showed that pyrolysis and acid modification effectively enhanced SMX adsorption by CR because of the increased number of binding groups, specific surface area, and porosity. SMX adsorption on CBM-A was optimized at a …

Blue Carbon Stock Assessment And Climate Resilience Potential Of Mangrove Forest In Hung Thang Commune, Vietnam, Hla Phong Ko, Pham Hong Tinh, Nguyen Thuy Duong

Applied Environmental Research

Mangrove forests are vital blue carbon sinks that contribute to climate change mitigation and coastal resilience. This study assessed the carbon stock and spatial‒temporal dynamics of a mangrove forest in Hung Thang commune, Hai Phong Province, Vietnam, via a combination of field measurements, soil organic carbon (SOC) analysis, and normalized difference vegetation index (NDVI)-based remote sensing models. The results revealed that mangroves in the Hung Thang community store an average of 87.42 tC ha-1, with SOC accounting for approximately 19% of the total carbon. A generalized additive model (GAM) analysis revealed a consistent increase in carbon stocks between 1996 and …

Young Papers, Gertrude Stickney, Sdsu Archives And Special Collections, Hilton M. Briggs Library

Archives Finding Aids

Gertrude Stickney Young was a longtime faculty member at South Dakota State University, educator, writer, and civic leader whose career spanned the early and mid twentieth century. The collection documents her academic work, historical writing, and involvement in university and community organizations through correspondence, clippings, departmental materials, manuscripts, and personal items dating from the late 1920s through the mid 1960s. Materials reflect Young’s contributions to the history of South Dakota State University, her family and regional historical research, and her broader role in South Dakota’s educational and cultural life.

Harding Undergraduate Research Conference 2026 Program, Harding University

Harding Undergraduate Research Conference

This document contains the schedule for the 2026 Harding Undergraduate Research Conference.

Revolution Or Restoration? Historiographical Perspectives On The Glorious Revolution And The Evolution Of English Constitutionalism, Utku Özgür

2026 Claremont Colleges Library Undergraduate Research Award

This paper examines how historians have interpreted the Glorious Revolution of 1688-89 and asks whether it should be understood as a true modern revolution or as a conservative restoration. Rather than offering a narrative account of events, it traces three major historiographical frameworks through which scholars have analyzed the Revolution: legal, fiscal, and political. The legal interpretation shows how concepts such as abdication, social contract, trust, and consent allowed Parliament to frame the removal of James II as a constitutional act rather than an act of rebellion. The fiscal interpretation emphasizes the post-1688 transformation of public credit, parliamentary control over …

Equitable Disaster Relief In Western Alaska: Rebuilding The Yukon-Kuskokwim Delta After Typhoon Halong, Emma Knapp

2026 Claremont Colleges Library Undergraduate Research Award

This zine, created for Professor Kareem Collie's Design & Equity seminar at The Hive, examines disaster relief efforts in Alaska's Yukon-Kuskokwim Delta following the landfall of ex-Typhoon Halong on October 12th, 2025. Halong displaced over 1,600 people in nearly fifty Alaska Native communities. The project combines journalistic reporting from local Alaskan news sources with library resources that grounded the research in anti-colonial and environmental justice frameworks. This zine uses an equity-driven lens to deconstruct how colonial policies continue to shape disparate impacts of climate change. It also illuminates how complex systems of oppression emerge over time. Overall, the decolonization of …

Power Of Sogurup: How Disguised Intellectuals Mobilized Korea’S Labor Sector, Jun Kwon

2026 Claremont Colleges Library Undergraduate Research Award

This paper situates the efforts of disguised laborers in 1980s South Korea within the broader movement for democracy against then-President Chun Doo-hwan's rule. Resistance began in education, where high school and college-aged students began organizing through academic and social channels across the country. To leverage the platforms students had built on campuses post-Kwangju, many students, either suspended or graduated, disguised themselves as academic elites to enter factories and sweatshops to work with and radicalize laborers. The analysis identifies the types of interactions between disguised laborers and full-time laborers and provides historical reasoning for how this process catalyzed the impactful set …

A Descriptive Study Of Cancer Care Experiences And Burden Of Rural South Dakotans, Sarah Mollman, Teddi Dowling, Patricia Woolridge, Jamie Hillmer, James Odom, Marie Bakitas, Hossein Moradi Rekabdarkolaee, Brandon Varilek

Journal Articles: College of Nursing

BACKGROUND: American Indian (AI) persons with advanced cancer (PwAC) in South Dakota have seen increased rates of cancer incidence and mortality compared to national rates. These inequities are driven by social determinants of health. Providing early palliative care is highly important for rural PwAC but is sparsely available in rural South Dakota.

OBJECTIVE: To explore cancer care experiences and patient symptoms and caregiver burden among AI and rural PwAC, and their family caregivers (FCGs), to understand the barriers and opportunities for adapting an early palliative care intervention.

DESIGN: Descriptive study design reporting on the qualitative and quantitative data collected.

METHODS: …

The Association Of Social Determinants Of Health On Mortality Among Adults With End-Stage Kidney Disease: A Systematic Review And Meta-Analysis, Prince Agyapong, Lauren Longacre, Patti Brooks, Hossein Moradi Rekabdarkolaee, Surachat Ngorsuraches, Aine O'Connor, Semhar Michael, Brandon Varilek

Journal Articles: College of Nursing

RATIONALE/OBJECTIVE:: Synthesize evidence from published studies on end-stage kidney disease (ESKD) mortality and determine associations between social determinants of health (SDOH) and ESKD mortality.

STUDY DESIGN:: This PRISMA-guided study examined all published research across four electronic databases.

STUDY POPULATIONS:: Adults with ESKD living in the United States.

SELECTION CRITERIA FOR STUDIES:: Clinical trials, observational, cross-sectional, and prospective/retrospective cohort studies were considered if one or more of the five domains of SDOH were present in the analysis.

EXTRACTION/ANALYSIS:: Extraction was performed independently by two reviewers using a standardized form that captured study purpose and design, outcomes, SDOH domain, setting, participant characteristics, …

Constitutional Limits On The President's Authority To Adjourn Congress, Allan Erbsen

Articles

Can the President adjourn Congress, declare that the adjournment constitutes a recess, and appoint cabinet officers without the Senate’s consent? President Donald Trump has considered invoking this supposed power. Adjourning Congress would enable the President to appoint otherwise unconfirmable officials. Even if the President does not adjourn Congress, the looming threat of adjournment could chill the Senate’s review of nominees.

This Article concludes that the President cannot evade the Senate’s role in the appointments process by adjourning Congress. Three clauses in the Constitution inform the analysis: the Consent Clause, which requires each house to consent to the other’s adjournment; the …

Imperfect Guardians, Amna A. Akbar, Ryan D. Doerfler

Articles

Professor David Strauss attributes the U.S. Supreme Court’s reactionary jurisprudence to a breakdown of elite consensus. He observes that lawyers and judges disagree about the proper “victims” of our political process: Are they Black, Brown, and LGBTQ+ people or, instead, Whites, Christians, and gun owners? Strauss worries the jurisprudential approach that emerged from Carolene Products now allows for judicial intervention on behalf of groups loaded with political power. Even then, he insists on the classic liberal defense of the courts: that courts serve as an important if imperfect check against the majoritarian domination of minorities.

In this Essay, we identify …

Why Boards Should Have Rotating Contrarians, Dana Brakman Reiser, Claire A. Hill

Articles

Too often, for-profit and nonprofit boards are too passive, deferential or both. Their failures to engage their critical faculties have resulted in serious harms as diverse as Boeing planes crashing and the NRA squandering millions of dollars. This article proposes a simple mechanism to stimulate critical thinking by individual directors and improve overall board dynamics: a designated contrarian position that rotates among members of the board. During her term, the contrarian’s job would be to raise objections to the organization’s proposed actions – or inaction. After their terms, each contrarian would resume her duties as a regular board member, replaced …

Claiming History, June R. Carbone

Articles

No abstract provided.

Follow The Money: A Historical And Bibliometric Reflection On The Rise Of Law And Economics, 1970-2025, Scott H. Dewey

Articles

From roughly 1970 to 2010, law and economics rose from the margins to a dominant position in American legal academia, accompanied by a dramatic increase in citations to law and economics scholarship. Citation analysis is often treated as a proxy for intellectual merit, but that assumption becomes questionable when ideas are advanced through systematic, well-funded, and sustained promotion aimed at serving specific political and economic interests. This study examines the right-wing funding networks that supported the rise of law and economics and analyzes the resulting bibliometric patterns in legal scholarship. By tracing these financial and citation dynamics, the study argues …

Jurisdiction And Citizenship, Ilan Wurman

Articles

This Article makes a series of interventions into the existing literature on birthright citizenship. It makes three historical claims about the common law rule and its development. First, the Article centers the importance of parental status. The relevant status was not the citizenship of the parents, however, but whether they were under the protection of, and owed allegiance to, the sovereign. The common law rule therefore did not depend on descent, but the modern belief that the rule depended solely on place of birth is also mistaken. Second, it reveals through an examination of safe-conducts and English statutes from the …

Untangling Ai Openness, Parth Nobel, Alan Rozenshtein, Chinmayi Sharma

Articles

The debate over AI openness—whether to make components of an artificial intelligence system available for public inspection and modification—forces policymakers to balance innovation, democratized access, safety, and national security. By inviting startups and researchers into the fold, it enables independent oversight and inclusive collaboration. But technology giants can also use it to entrench their own power, while adversaries can use it to shortcut years and billions of dollars in building systems, like China’s DeepSeek, that rival our own. How we govern AI openness today will shape the future of AI and America’s role in it.

Policymakers and scholars grasp the …

Space Mining, Richard Painter

Articles

The Trump Administration and U.S. Congress are promoting new ventures to extract valuable minerals from outer space. This Article does not dismiss the idea out of hand, but explores reasons for caution, including practical problems with space mining, its environmental impact, the likelihood that the United States could violate international law, and the risk of armed conflict. These problems are exacerbated by financial conflicts of interest in our government with a handful of billionaires, who have a financial interest in space mining work. The promotion of their agenda could involve wasteful government spending on subsidies for private ventures, with a …

State-Level Variations In School Physical Activity Policies And Their Impact On Student Physical Activity In Arkansas And Oklahoma, Sydney K. Crees, Erin Howie Hickey

2026 Honors Symposium

Regular physical activity is critical for children's health and development, yet most U.S. children fall short of recommended daily activity levels. Schools represent a key opportunity to address this gap through PE and recess, though state policies governing these vary widely. This cross-sectional study compared school-based physical activity in Arkansas and Oklahoma, two states with distinct policies. Arkansas mandates 40 minutes of daily recess and 40 minutes of PE per week, while Oklahoma requires 60 minutes of weekly PE and 60 minutes of additional weekly physical activity but does not mandate recess. Surveys were distributed to principals and PE teachers …

Enhancing The Playing Field:​ Effects Of Playground Renovation On Recess Physical Activity​, Hudson M. Parsley

2026 Honors Symposium

Background: Children in recent years have become increasingly sedentary, which poses major risks to their health and overall well-being. Recess is a point of interest in the field of exercise science, as research has found increased recess time is associated with increased levels of PA, but little is known on how the quality of recess, such as playground structures, affects physical activity. Purpose: The aim of my study is to investigate if there is a significant change in physical activity habits during recess among elementary school students due to a change in playground play structures and surfaces, in the form …

Nanocomposite Mediated Delivery Of 5-Fluorouracil Using Silver Nanoparticles To Promote Wound Healing, Kamal Nath Kasi

Theses, Dissertations and Capstones

Chronic wounds, particularly in diabetic patients, remain a significant clinical challenge due to the complex interaction of persistent infection, chronic inflammation, and impaired cellular regeneration. Conventional drug therapies often fail to achieve effective treatment due to rapid drug degradation, poor targeting, and localized toxicity. This study explores a nanotechnology-based approach by developing and evaluating 5-FU loaded AgNP (AgNP–5FU) as a controlled drug delivery system. AgNP (AgNP) were synthesized and characterized using scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, particle size, and zeta potential analysis, while Fourier Transform Infrared Spectroscopy (FTIR) analysis suggested possible interaction between 5-FU and the …

Development And In Vitro Characterization Of 5-Fluorouracil–Loaded Plga Nanoparticles For Controlled Drug Delivery, Kavya Yandapalli

Theses, Dissertations and Capstones

Non-Alcoholic Fatty Liver Disease (NAFLD) is a progressive metabolic disorder characterized by excessive lipid accumulation in hepatocytes and chronic inflammation. Nanoparticle-based drug delivery systems offer a promising strategy to enhance therapeutic efficacy while minimizing systemic toxicity. The objective of this study is to formulate and characterize 5-FU–loaded PLGA nanoparticles and evaluate their in vitro performance. 5-FU–loaded PLGA nanoparticles were prepared using the double emulsion solvent evaporation method. The nanoparticles were characterized by particle size, polydispersity index, zeta potential and SEM. Drug encapsulation efficiency, loading capacity and in vitro drug release studies were conducted. The formulated nanoparticles exhibited sizes within the …

Comparative Machine Learning Models For Disease Risk Prediction, Mercy Mawusi Agbley

Theses, Dissertations and Capstones

Accurate prediction of disease outcomes is crucial for improving clinical decision-making and enabling early intervention. This study compares the performance of various statistical and machine learning models for clinical risk prediction using two healthcare datasets: diabetic retinopathy and heart disease. The models assessed include Logistic Regression, LASSO, k-Nearest Neighbors (KNN), Support Vector Machines (SVM), Neural Networks, Random Forests, Gradient Boosting Machines (GBM), and a stacked ensemble model. Prior to modeling, datasets were split into train and test sets. Standardization was applied to numeric features whilst categorical features were one-hot encoded. These transformations were later applied to the test set. Principal …

The Link Fantastic: Detecting And Linking Simulated, Nongravitationally-Accelerating Objects With The Rubin Observatory Pipeline, Ellie White

Theses, Dissertations and Capstones

Rubin Observatory’s Legacy Survey of Space and Time (LSST) is poised to revolutionize our understanding of the Solar System. After only a few months of regular operations, Rubin has already discovered over 11,000 new Solar System bodies, and is projected to discover millions more. With discoveries pouring in, and with the development of moving object detection pipelines for routine observing, one key question is: how effectively can Rubin detect and identify objects with anomalous trajectories? The answer is of interest not only for natural bodies in our Solar System, but also in the search for technosignatures, which could be identified …

Hepatocyte Peroxisome Biogenesis And Phytol-Induced Metabolic Stress In Liver Disease, William Galloway

Theses, Dissertations and Capstones

Hepatocyte peroxisomes are required for metabolism of phytol-derived branched-chain fatty acids through the ACOX2-SCPx beta-oxidation pathway. This study tests whether hepatocyte-specific deletion of PEX16 (Pex16^Alb-Cre), which eliminates peroxisome biogenesis, sensitizes the liver to phytol-induced injury. The Pex16^Alb-Cre mice and their normal control Pex16^fl/fl mice were fed the Lieber-DeCarli liquid with or without 0.1 percent phytol for eight weeks. Serum alanine aminotransferase (ALT) and liver index were measured. Liver sections were stained with hematoxylin and eosin and Masson’s trichrome. Immunoblot analysis of peroxisomal enzyme expression was also performed. Phytol had no effect in Pex16^fl/fl mice as …

Making Inquiry Accessible: Inquiry-Based Design And Instruction For English Learners In Secondary Social Studies Classrooms, Meghan T. Hawkins

Theses and Dissertations--Education Sciences

This dissertation explores inquiry-based instruction for English Learners (ELs) in secondary social studies classes. The first article explored the existing literature in the field. The second article considered instructional design choices that could increase learning outcomes in an inquiry designed for ELs, implemented in a culturally and linguistically responsive classroom. Finally, the third article is an exploratory case study that examined how a secondary high school social studies teacher and ESL co-teacher designed and implemented inquiry-based instruction in a co-taught ESL class. The research questions included: 1. How do teachers build trust in a culturally and linguistically responsive social studies …

Anaerobic Digestion Of Variable, Heterogeneous Organic Wastes Under Changing Operational Conditions And Bioaugmentation: Impacts On Process Performance And Microbiome Dynamics, Victoria Holliday

Theses and Dissertations--Biosystems and Agricultural Engineering

Expanding the adoption of anaerobic digestion (AD) is limited by system instabilities caused by feedstock composition and variability. Understanding how changes in feedstock and operational parameters influence microbiome dynamics is essential for developing biology-driven strategies to improve digester stability.

Two semi-continuous reactors, an experimental and a control, operated over 39 weeks across five phases with varying feedstocks and organic loading rates. Substrate-specific enrichment cultures were developed for bioaugmentation and implemented in select phases to assess its impact. Both reactors exhibited similar performance, transitioning through periods of stability, stress, and recovery in response to operational changes. Corresponding shifts in dominant taxa …

Comparing Strength Testing Measures And The Association Of Strength And Body Composition In Young Children, Abigayle R. Spong

Theses and Dissertations--Kinesiology and Health Promotion

Muscle strength is an important component of physical fitness; however, measuring it with isokinetic dynamometry (IKD) is expensive and requires dedicated space. Handheld dynamometry (HHD) provides a practical alternative for field and clinical settings. Thus, the purpose of this study was to compare peak knee flexion and extension torque measured by IKD and HHD in 37 children (ages 5-11 years) and examine relationships with body composition. Participants completed a RAMPing protocol at 90^o knee flexion consisting of two warm-up contractions at 50% and 75% effort followed by three maximal voluntary isometric contractions. Body composition was assessed via DXA scans. …

Effects Of Constant Time Delay Using Multiple Acquisition Exemplars On The Generalization Of Self-Instruction To Complete Vocational Tasks For High School Students With Intellectual Disability, Anna Norby

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

This study presents findings from a multiple probe design that evaluated the effects of constant time delay with multiple acquisition exemplars on the acquisition and generalization of self-instruction to complete vocational tasks for high school students with intellectual disability. The research included three high school students with intellectual disability, and data were analyzed across baseline, intervention, and generalization conditions. Instruction targeted the use of self-instruction procedures embedded within vocational tasks, with multiple exemplars incorporated during acquisition to promote stimulus generalization. Participants were screened using a set of pre-arranged vocational tasks to identify existing skill levels and determine appropriate instructional targets, …

Fiscal Decentralization, Foreign Capital, And Economic Development In Sub-Saharan Africa, Kwadwo D. Frempong

Theses and Dissertations--Public Policy and Administration

Economic development in Sub-Saharan Africa has been shaped by two transformative policy shifts: widespread fiscal decentralization reforms transferring revenue and expenditure authority to subnational governments, and the pursuit of foreign direct investment to supplement domestic capital. Despite the breadth of these reforms, their effectiveness in promoting sustainable economic development remains empirically contested. This dissertation examines three interconnected questions about fiscal governance and capital flows in Sub-Saharan Africa: what determines the extent to which governments decentralize fiscal authority; how county fiscal composition and revenue autonomy shape subnational economic performance; and how foreign direct investment interacts with domestic investment and growth.

The …