Digital Commons Network^™

Procedure To Control Current And Color Fraction Using The Drok Dc Adjustable Buck Converters In The Utah State University 16-Chamber Photobiology System, Abby Laughlin, Alec Hay, Steve Sargent, Bruce Bugbee

Techniques and Instruments

Constant Current (CC) mode is used instead of Voltage mode because LEDs are regulated by current. This mode is necessary to provide stable current and thus a stable PPFD output for the LEDs.

2026-2027 Graduate Catalog, Morehead State University. Registrar's Office.

Morehead State Catalog Archive

2026-2027 graduate catalog for Morehead State University.

Bankruptcy As Presidential Resistance, Alvin Velazquez

Fordham Urban Law Journal Online

No abstract provided.

Works Progress Administration (Wpa) Inventories Of Church Records - Accession 410, Works Progress Administration, Church Records, South Carolina Historical Society

Manuscript Collection

These records were microfilmed by the South Carolina Historical Society through the cooperation of the South Caroliniana Library at the University of South Carolina, Columbia, under a grant from the South Carolina Committee for the Humanities as part of the grant titled “Genealogy, Community & Identity: Finding Local Roots.” These records represent the efforts of WPA field researchers who collected information on the history and records of approximately 2,500 South Carolina Churches in the late 1930s, including black congregations. The records include work forms, typed reports, newspaper clippings and short histories. The information pertains to physical descriptions of church buildings …

Lindsay Pettus–J. Marion Sims Research Papers - Accession 1733, David Lindsay Pettus, James Marion Sims

Manuscript Collection

The Lindsay Pettus–J. Marion Sims Research Papers document historical research conducted by historian and conservationist Lindsay Pettus (1940–2020) on Dr. James Marion Sims (1813–1883), a native of Lancaster County, South Carolina, who is historically recognized for his role in the development of modern gynecology. The collection reflects Pettus’s sustained interest in documenting Sims’s life, medical career, legacy, and public commemoration, particularly within South Carolina.

The collection consists of research files, correspondence, printed materials, photographs, postcards, and reference notes compiled during Pettus’s research activities. Research materials include internet articles, photocopies of published writings, a photocopy of Sims’s autobiography, bibliographies, book lists …

Pat Conroy First Edition Book Collection - Accession 1747, Donald Patrick Conroy

Manuscript Collection

The Pat Conroy First Edition Book Collection consists of first edition publications authored by Donald Patrick “Pat” Conroy (1945–2016), an acclaimed American novelist whose work is closely associated with the cultural, social, and physical landscapes of the South Carolina Lowcountry. Many of the volumes in this collection are signed by the author, enhancing their research and evidentiary value.

The collection spans Conroy’s literary career from his debut memoir The Boo (1970) through The Death of Santini (2013), a reflective work that revisits characters and themes central to his earlier writings. Included are major novels, memoirs, and nonfiction works such as …

Jordan Panoramic Photograph Collection - Accession 1767, Carol Mcwhorter Jordan

Manuscript Collection

The Jordan Panoramic Photograph Collection consists of two early twentieth-century panoramic photographs that document large-scale institutional and organizational gatherings in the American South. The images are dated 1905 and 1912 and reflect the use of panoramic photography to capture expansive scenes, collective identity, and public activity during this period.

The first photograph, taken in 1912 by the Russell Bros. photographic studio and labeled “Panorama no. 871,” depicts Camp Pettus, a military training camp located in Anniston, Alabama. The image provides a wide view of the camp’s layout, personnel, and infrastructure, offering visual evidence of early twentieth-century military preparedness and training …

Annie V. Dunn Papers - Accession 1895, Annie Vredenburgh Dunn

Manuscript Collection

The Annie V. Dunn Papers document both the personal life and professional legacy of Ms. Annie Vredenburg Dunn (1876-1966), who served as head of the Winthrop College Department of Fine Arts for more than three decades from 1909-1947. The collection comprises correspondence, pamphlets, brochures, drawings, newspaper clippings, photographs, drawing instruments, and related materials that collectively illustrate her contributions to the development of Winthrop College’s Fine Arts Department, as well as her broader influence as an educator and member of her community.

Included within the collection are letters from family members, friends, and professional colleagues; records of contacts with various institutions …

Carol Jean Jennings Wts Memorabilia Collection - Accession 1802, Carol Jean Jennings

Manuscript Collection

The Carol Jean Jennings WTS Memorabilia Collection consists of materials documenting her student experience at the Winthrop Training School and the graduating class of 1955. The collection includes photographs, newspaper clippings, programs, tickets, postcards, and a 1955 Garnet and Gold WTS yearbook.

These materials provide insight into student life, school activities, and commemorative events associated with Winthrop Training School during this period.

Susan Huffman Pruitt Collection - Accession 1445, Susan Huffman Pruitt

Manuscript Collection

The Susan Huffman Pruitt Collection consists of materials documenting Pruitt’s experiences as a student at Winthrop College and her continued involvement with the institution as an alumna. Pruitt (1919-2015) graduated from Winthrop College in 1940. The collection includes three bound volumes of Winthrop College’s Tatler yearbooks from 1937-1939, Winthrop publications, newspapers and newspaper clippings, alumni and class reunion materials, photographs, and miscellaneous items.

The collection provides insight into student life at Winthrop College during the late 1930s and early 1940s. The Tatler yearbooks and other Winthrop publications document campus activities, student organizations, events, and other aspects of college life. Photographs …

Mary Cole Nibarger Wts Collection - Accession 1855, Mary Cole Parks Nibarger

Manuscript Collection

The Mary Cole Nibarger Collection consists of materials documenting Mrs. Mary Cole Parks Nibarger’s (1930-2021) teaching experience at the Winthrop Training School. Mrs. Nibarger was a 1951 Winthrop College graduate and was employed with the Winthrop Training School from September 1955 until its close in 1965. She served in many capacities including Supervisor of Mathematics and Freshman Class Sponsor. The collection reflects her commitment to education and dedication to the Winthrop Training School.

The collection includes yearbooks, class reunion correspondence, photographs, newspaper clippings, and miscellaneous items. The yearbooks document the students of WTS in the years 1956-1958, 1960, and 1962-1965. …

York County Register Of Mesne Conveyances Books Collection - Accession 911, Clerk Of Court, York County

Manuscript Collection

This collection consists of microfilm copies of the York County, South Carolina, Register of Mesne Conveyances books dating from 1786 to 1852. The original records are held by the South Carolina Department of Archives and History.

The records primarily document the transfer and ownership of property in York District/County and include deeds, land conveyances, mortgages, indentures, plats, and related legal instruments recorded by the Register of Mesne Conveyances office. These volumes provide information on land transactions between private individuals, estates, businesses, and public entities during the late eighteenth and nineteenth centuries.

In addition to documenting property ownership and boundary changes, …

Deep Learning Based Classification Of Retinal Oct Images Using Custom Cnn And Resnet50, Ahmed Afzal

ICT

Retinal diseases such as Choroidal Neovascularization, Diabetic Macular Edema and Drusen can affect vision if they are not detected and treated early. Optical Coherence Tomography images provide detailed cross sectional views of the retina, making them useful for identifying retinal abnormalities. This project investigates the use of deep learning for classifying retinal images from the OCT2017 dataset into four categories: CNV, DME, DRUSEN, and NORMAL. The project follows the CRISP-DM methodology, covering data understanding, data preparation, modelling, evaluation and deployment. During data preparation, duplicate images were removed, image dimensions were standardised and class imbalance was addressed using class weights during …

Pxaa: A Root-Cause Decision-Support System For Airline Passenger Complaints Using Sentiment Analysis And Complaint Classification, Adélia Acacio Da Silva, Stefani Rabelo De Campos Nunes

ICT

PXAA (Passenger Experience Analytics Assistant) is a machine learning and decision-support prototype developed to analyse airline passenger complaints using sentiment analysis and complaint classification techniques. The project follows the CRISP-DM methodology and uses airline passenger reviews collected from AirlineQuality.com through Python web scraping. Natural language processing (NLP) techniques were applied to clean and preprocess the textual data, while logistic Regression was used to classify passenger sentiment into positive, negative and neutral categories.

The project also implemented rule-based complaint classification to identify common complaint themes such as delays, baggage issues, customer service problems, comfort issues, payments/refund complaints and communication failures. These …

Comparative Economic Impact Modelling Of Floods Vs Drought On A Global Scale, Diogo Lemos Aguiar, Paulo Henrique Oliveira Machado

ICT

Climate change is generating unprecedented economic losses through extreme weather events, yet comparative predictive analysis between different hazard types remains limited. This report presents a Machine Learning–Based Comparative Economic Impact Modelling System designed to predict and compare the economic damages caused by floods and droughts on a global scale. The system integrates historical disaster records from the EM-DAT International Disaster Database with country-level socioeconomic indicators from the World Bank's World Development Indicators, applying supervised regression modelling to a unified dataset of 1,301 disaster events across 133 countries from 2000 to 2025. XGBoost and a Multi-Layer Perceptron Neural Network were evaluated …

Predicting Co₂ Emissions From Cattle-Driven Deforestation In The Amazon Rainforest Using Machine Learning, Daniel Ambrosio, Suelen Rocha

ICT

Deforestation has become a major environmental issue worldwide, especially in the Amazon Rainforest, which is known as one of the world’s largest carbon sinks. This region has been significantly impacted by cattle farming, contributing to increased CO₂ emissions and land degradation. As Brazil is one of the world’s largest beef producers and exporters, the environmental impact of livestock production has attracted increasing attention from organisations, governments, and sustainability analysts.

This project aims to analyse the relationship between cattle farming, deforestation, and CO₂ emissions in the Amazon using Machine Learning. Using the CRISP-DM framework, the project explored each stage of the …

Effect Of Cu Content On Microstructure, Morphology, And Antibacterial Properties Of Ti-Cu Alloy Thin Films, Chittra Kedkaew, Phalakorn Khwansungnoen, Tanattha Rattana

Journal of Metals, Materials and Minerals

Ti-Cu alloy thin films exhibit considerable potential for the development of advanced antibacterial surfaces, particularly for biomedical applications. In this research, Ti-Cu binary alloy thin films with a wide range of Cu content from 25.8 at% to 77.8 at% were deposited using magnetron co-sputtering with pure Ti and Cu as the targets. The composition of Cu in the films can be controlled by the applied power of Cu targets. This study investigated the effect of Cu content on the microstructural, morphological, and antibacterial properties using X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Atomic force microscopy (AFM), X-ray photoelectron …

Effects Of Various Heat Treatment Cycles On Mechanical Properties And Wear Resistance Of 65mn Carbon Steel, Amir Abbas Mojahedi, Seyed Abdolkarim Sajjadi, Fatemehsadat Sayyedan

Journal of Metals, Materials and Minerals

The aim of the present study is to investigate the effect of various heat treatment cycles on mechanical properties and wear resistance of 65Mn carbon steel. For this purpose, five different heat treatment cycles including normalizing, austenitizing, quenching, and tempering were performed at different austenitization temperatures and tempering times. Subsequently, effects of the parameters on tensile strength, toughness, hardness, and wear resistance of the heat-treated samples were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) were employed to analyze microstructure of heat-treated samples. To study the wear resistance of the samples after …

Enhancing Aqueous Solubility Of A Psoralen Derivative Via Cyclodextrin Inclusion Complexation : In Silico And In Vitro Study, Gulzaib Basharat, Saba Ali, Pattharamon Chaikhun, Choosak Jaroenrit, Kuakarun Krusong, Thanthapatra Bunchuay, Tanatorn Khotavivattana, Thanyada Rungrotmongkol

Journal of Metals, Materials and Minerals

N-(4-Bromobenzoyl)-8-methoxypsoralen-4-amine (BNB) is a psoralen derivative with potent cytotoxic activity against breast cancer cells but with limited pharmaceutical application and therapeutic potential due to its extremely low aqueous solubility. To overcome this limitation, β-cyclodextrin (βCD) and its derivatives dimethyl-βCD (DMβCD), hydroxypropyl-βCD (HPβCD), and sulfobutylether-βCD (SBEβCD) were investigated as carriers to enhance BNB's aqueous solubility via cyclodextrin inclusion complexation. A combined computational–experimental strategy was employed, integrating molecular docking, 500-ns all-atom molecular dynamics simulations in quintuplicate runs (2.5 µs in total), and experimental validation by phase solubility analysis, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). Docking and simulations revealed …

Eco-Friendly Pva-Walnut Shell-Based Triboelectric Nanogenerator For Biomechanical Energy Harvesting And Self-Powered Touch Sensing, Sabita Tripathy, Gayatri Mohapatra, Arjun Kumar, Manoj Kumar Debnath

Journal of Metals, Materials and Minerals

The growing demand for sustainable power in wearable electronics necessitates eco-friendly energy harvesting alternatives. Herein, a polyvinyl alcohol-walnut shell (PVA-WS) composite was developed as a biodegradable triboelectric active layer for a single-electrode triboelectric nanogenerator (TENG). Walnut shell powder, a lignocellulosic agricultural byproduct, was incorporated into PVA at an optimised 3 wt%, enhancing surface micro-roughness and charge trapping capability as confirmed by SEM and XRD analyses. The fabricated device yielded a peak output voltage of 130 V, short-circuit current of 390 nA, and maximum power of 20 μW at 500 MΩ under 1 Hz excitation, while also successfully harvesting biomechanical energy …

Surface Characteristics Of Montmorillonite Reinforced Cellulose Membranes Derived From Pineapple Waste, Naufal Rizky Amasda, Heru Suryanto, Aminnudin Aminuddin, Uun Yanuhar, Nanda Lidya Cinta Aulia Sari, Agus Suyetno, Komarudin Komarudin, Fajar Nusantara, Gaguk Jatisukamto, Aulia Surya Ramadhan

Journal of Metals, Materials and Minerals

This study aims to investigate the effect of montmorillonite on the surface characteristics and porosity of bacterial nanocellulose (BNC) membranes derived from pineapple peel waste. The bacterial cellulose was synthesized using Acetobacter xylinum using pineapple peel extract as medium component. Bacterial nanocellulose membrane (BNC) was obtained by crushing and homogenizing bacterial cellulose in a high-pressure homogenizer. BNC membrane was reinforced with montmorillonite content of 2 wt% to 8 wt%. The membrane was characterized for its properties using SEM, FTIR, surface roughness tester, tensile tester, water holding capacity test, and BET analysis. The results showed that montmorillonite was well-dispersed within BNC …

Samuel Johnson Dictionary, 1755 Edition, Beth Rapp Young

Research Data and Datasets

This dataset contains digitized page images from the 1755 first edition of A Dictionary of the English Language, contributed by the University of Florida and Indiana University as part of a digital humanities project led by Beth Rapp Young. The collection provides foundational primary source material for the study of 18th-century English lexicography and supports research in textual analysis, transcription, and historical linguistics.

Observation Of Altermagnetic Spin-Splitting In An Intercalated Transition Metal Dichalcogenide, Milo X. Sprague, Madhab Neupane

Research Data and Datasets

Altermagnetism is a novel magnetic phase combining characteristics of both antiferromagnetism and ferromagnetic ordering. Despite growing theoretical interest in altermagnetic materials, reports of experimentally verified high-Néel-temperature layered compounds are limited or remain to be firmly established. In our manuscript, Observation of Altermagnetic Spin-Splitting in an Intercalated Transition Metal Dichalcogenide by M. Sprague et al, we present an angle-resolved photoemission spectroscopy and density functional theory study of Co1/4TaSe2, a compound we identify as a layered altermagnetic material. Our spin-resolved and spin-integrated angle-resolved photoemission spectroscopy measurements reveal an electronic band structure in excellent agreement with density functional theory calculations, demonstrating clear signatures …

Modernizing Rotc Training: Evaluating The Impact Of Digital Learning On Tactical Performance, Dominick Olhava

Honors Program Theses

Tactical proficiency is a critical component of ROTC officer development, yet current study practices–primarily physical manuals, PowerPoint briefings, and in person instruction–offer limited opportunities for individualized learning, repetition, and long term retention. While digital learning platforms are widely adopted across higher education, they remain underutilized within ROTC programs despite their potential to enhance accessibility, engagement, and performance.

To address this gap, ROTCELERATE (rotcelerate.com) was developed to serve as a comprehensive digital repository designed to centralize and modernize ROTC training materials. The platform consolidates doctrinal references, tactical methodologies, and written study resources, and supplements them with interactive animated visualizations that illustrate …

The Times They Are A-Changin’: How Bob Dylan’S Music Helped To Change An Era, Emily Newby

Honors Program Theses

No abstract provided.

Predictors Of Resilience Among East Asian American Adults: The Role Of Ethnic Identity, Parental Cultural Socialization And K-12 Experiences Of Stereotype-Related Stress, Regina Lee

Selected Full Text Dissertations, 2011-

This quantitative retrospective study examined predictors of resilience among East Asian American adults reflecting on their K-12 educational experiences of stereotype-related stress. Guided by Asian Critical Theory (AsianCrit), Ethnic Identity Theory, Resilience Theory, and Quantitative Critical Race Theory (QuantCrit), the study investigated whether ethnic identity and parental maintenance of heritage culture during K-12 schooling predicted adult resilience. Participants (N = 207) completed validated measures of ethnic identity (MEIM; Phinney, 1992; Roberts et al., 1999), parental maintenance of heritage culture subscale (AAPRES; Juang et al., 2016), stereotype-related stress (MMM Scale, Thompson & Kiang, 2010; Perpetual Foreigner subscale, Liang et al., 2004), …

Exposition Professionnelle Aux Agents D'Infections Nosocomiales En Milieux De Soins : Mieux Comprendre Et Contrôler La Voie De Propagation Par Aérosols, Caroline Duchaine, Yves Longtin, Marc Veillette, Adriana Larotta, Bianka Paquet Bolduc

Rapports de recherche scientifique

Ce projet, mené dans le contexte de la pandémie de COVID-19, visait à mieux comprendre les risques liés à la présence de virus et de bactéries dans l’air des milieux de soins et à identifier les meilleures façons de protéger le personnel de la santé. Ce projet s’est articulé autour de trois grands volets de recherche complémentaires, menés en milieux réels et en laboratoire. Le premier volet visait à documenter la présence de virus comme le SARS-CoV-2 (responsable de la COVID-19), l’influenza ou le norovirus dans l’air d’hôpitaux et de centres de soins de longue durée. Des prélèvements dans les …

Effets Respiratoires De L'Exposition Journalière Aux Particules Respirables, Fines Et Ultrafines Dans Divers Milieux De Travail, Audrey Smargiassi, Maximilien Debia, Eva Suarthana

Rapports de recherche scientifique

De très nombreux travailleurs sont exposés quotidiennement à des niveaux de particules dans l’air ambiant qui dépassent largement les concentrations auxquelles la population générale est exposée. Néanmoins, très peu d’études ont porté sur l’influence de l’exposition quotidienne des travailleurs aux particules respirables sur la santé respiratoire. La majorité des études se sont intéressées aux effets des expositions prolongées sur le développement de maladies respiratoires. Pourtant, les associations entre l’exposition journalière aux particules respirables et l’inflammation pulmonaire et la fonction respiratoire sont bien documentées pour la population générale. Les effets des particules respirables pourraient différer pour les travailleurs parce que les …

Play-Based Learning In Private International Preschools In Cairo: Teachers' Perspectives, Kesha L. Stovall

Theses and Dissertations

This thesis explores how play-based learning is practiced and contextualized in private, international preschools in Cairo, Egypt through the perspective of teachers. It calls upon both historical and contemporary theories of play and play pedagogies ranging from the times of Plato and Al-Farabi to the 21st century with Montessori and Dewey. Using a contemporary theory of play presented by Stuart Lester and Wendy Russell as a guiding framework, it examines how play and play-based learning are implemented, shaped and even challenged in a Cairene context. These contexts include sociocultural factors such as parents’ expectations and aspirations, institutional barriers, teacher development …

Today And Yesterday, Vol. 50, 2026, Illinois State University, Department Of History

Today and Yesterday

Newsletter of the Illinois State University Department of History