Digital Commons Network^™

Dark-Matter-Deficient Twins: Fcc 224 And Fcc 240 As Possible Analogs Of Ngc 1052-Df2 And Df4, Maria Luísa Buzzo, Pieter Van Dokkum, Michael Hilker, Duncan A. Forbes, Aaron J. Romanowsky, Yimeng Tang

Faculty Research, Scholarly, and Creative Activity

The recent “bullet-dwarf” model proposes that high-velocity collisions between dwarf galaxies can produce stellar systems with overluminous globular clusters (GCs) and a deficiency of dark matter, as observed in the NGC 1052 group galaxies NGC 1052-DF2 and NGC 1052-DF4. We present a possible analog system in the outskirts of the Fornax cluster: the ultradiffuse galaxy FCC 224 and its close companion FCC 240. Using deep Very Large Telescope/MUSE integral field spectroscopy, we characterize their stellar populations, internal kinematics, and GC systems to test this formation scenario. Both galaxies exhibit low velocity dispersions. Interpreted with a standard mass estimator at the …

The Courier, Summer 2026, Tennessee. Historical Commission.

Tennessee Historical Commission

No abstract provided.

Academic Year 2026–27 Annual Estimate Of The Strategic Security Environment, Us Army War College

Books, Monographs & Collaborative Studies

The Academic Year 2026–27 Annual Estimate of the Strategic Security Environment provides a framework for those aspiring to tackle the Department of War’s most pressing challenges. This year’s authors highlight trending challenges and identify potential tension points across 10 sections organized under the broad themes of 1) Regional Challenges and Opportunities and 2) Institutional Challenges. This assessment represents the collective expertise of the US Army War College. The narrative is supplemented by a tailored list of 105 command-sponsored questions from 47 different Army and Joint organizations from across the Department of War. Combined, the distinct yet complementary narrative and question …

Disclosing Hunger: Predictors And Screening Strategies For Food Insecurity In Undergraduate University Students And Adults Contexts, Jocelyn Emily Jarvis

USF Tampa Graduate Theses and Dissertations

Food insecurity is a growing public health concern among college students in the United States, with prevalence estimates exceeding those of the general population. Despite the availability of campus, community, and federal food assistance resources, utilization remains low, suggesting that barriers extend beyond structural access. This dissertation examines the psychosocial, behavioral, and institutional factors that shape food insecurity disclosure and help-seeking behaviors among undergraduate students, guided by the Social Ecological Model (SEM).

This work includes three complementary studies. Study One presents a scoping review synthesizing 16 U.S.-based studies to identify psychosocial determinants of food assistance utilization among food-insecure adults. Findings …

Vestitus Auctoritate: Visual Representations Of Power In Late Roman Sicily, Angela L. Costello

USF Tampa Graduate Theses and Dissertations

This dissertation examines how Late Roman iconography of dress and appearance acted as visual bolsters of elite identity in the province of Sicily by engaging with two villas and their mosaic corpora: the Villa Romana del Casale, and the Villa Romana del Tellaro. Traditional Roman scholarship on power have focused on monuments, military achievements, and imperial building programs, and while these are all necessarily facets of Late Roman identity, there are valuable avenues left unexplored. Some, but not enough, attention has been given to the role of dress iconography during Late Antiquity. This study addresses this gap by investigating how …

Strategic Dimensions Of Artificial Intelligence: Development Globalization, Investment Dynamics, And Firm Performance, Alysson Silveira

USF Tampa Graduate Theses and Dissertations

Artificial Intelligence (AI) is quickly changing the competitive landscape of most industries, and understanding how to incorporate this technology into products, services, and processes is becoming crucial for firms. This dissertation presents three studies that address different strategic challenges that arose with the unfolding of AI. First, I study how multinational enterprises globalize the development of AI. I argue that concentrating AI development or globalizing it has different implications for supply chain responsiveness and operations complexity. I use a combination of a rare dataset on software presence across 45 countries and financial data to show that AI development globalization has …

Van Der Waals Interactions Through The Lens Of 2d Materials With Emphasis On Many-Body Effects, Thi Xuan Diem Dang

USF Tampa Graduate Theses and Dissertations

This dissertation addresses the long-standing challenge of accurately and efficiently modeling long-range electron correlations, with a particular focus on van der Waals (vdW) interactions. These interactions play an essential role in predicting the structure, stability, and functionality of molecular systems and condensed matter materials. Although Density Functional Theory (DFT) has become a robust cornerstone of computational materials science, traditional formulations of the theory frequently fail to capture dispersive interactions, leading to significant errors in determining interlayer distances, binding energies, and stacking configurations. These limitations become particularly pronounced in layered materials and vdW heterostructures (HSTs), where weak long-range correlations are sensitive …

Re: Conditional Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Clark Tailings Consolidated Waste Management Area (Ctcwma) Site Investigation Quality Assurance Project Plan (Qapp) (Dated June 1, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Studying The Physisorption And Reaction Between In9Sno15 Pyramid Nanocluster With Water Molecule Via Transition State Theory, Nisreen A. Fejer, Asmaa H. Mohammed, Mohammed T. Hussein

Baghdad Science Journal

This study investigates two binary semiconductors, Sn₁₀O₁₅ and In₁₀O₁₅, to form a ternary In₉SnO₁₅, a potential indium tin oxide (ITO) pyramid nanocluster for a humidity sensor, using density functional theory and transition-state theory. B3LYP hybrid functional was applied with the 6-311G** basis set for light elements (H, O) and (SDD) basis set for heavy elements (In, Sn). Steady-state geometrical structures were obtained using a complementary program, Gaussian View 05, and the corresponding electronic properties. HOMO and LUMO were calculated via the Gaussian 09W software program …

Modeling And Performance Analysis Of Two-Dimensional Vcsel Using Finite Element Simulation, Rand Mahdi Khudair, Shaimaa S. Mahdi

Baghdad Science Journal

Vertical cavity surface emission lasers (VCSELs) are considered to be an integral component of short-range optical communication. Compact structure, low threshold current, and high modulation capability are the reasons why these communication systems are used. efficiency. This study presents a two-dimensional numerical simulation of a VCSEL structure at a wavelength of 850 nm using the finite element method (FEM) via Laser MOD software to investigate the effect of using two different quantum well materials (QW) GaAs, and AlGaAs on the optical performance of the device. All of the above were done within the same cavity and DBR structure to provide …

Comparative Study Of Green Synthesis To Prepare Tio2 Nanoparticles From Plant Shard Leaves Extract By Using Microwave Irradiation And Microjet Plasma, Zainab Fakhri Merzah, Zainab J Shanan, Tayser Sumer Gaaz

Baghdad Science Journal

Plant extracts have been widely investigated as a safer alternative for the green synthesis of metal oxide nanoparticles. This study presents a green synthesis approach using shard leaf extract assisted by microwave irradiation and microjet plasma for the preparation of titanium dioxide nanoparticles (TiO₂ NPs). The synthesized nanoparticles were characterized using Field Emission Scanning Electron Microscopy (FESEM), X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV–Vis), Fourier Transform Infrared Spectroscopy (FTIR), and zeta potential (ZP) analysis. XRD results confirmed the formation of the anatase phase of TiO₂ without detectable brookite or rutile peaks, indicating high phase purity. The crystal structure was …

Quasi-Mixing C0-Semigroups And Their Relations With Recurrent C0-Semigroups, Mansooreh Moosapoor, Otmane Benchiheb

Baghdad Science Journal

This article presents and investigates the concept of the quasi-mixing C₀-semigroups. It is proved that the quasi-mixing of an invertible C₀-semigroup is equivalent to the quasi-mixing of its inverse. The quasi-mixing vectors are defined and they are used to prove a sufficient condition for the quasi-mixing. It is established that the quasi-mixing of a C₀-semigroup is equivalent to the quasi-mixing of any of its discretizations. The quasi-mixing of a C₀-semigroup ( T_t )_{t ≥ 0}, as it is demonstrated by this study, implies the quasi-mixing for each operator T …

Bayesian Subgroup Learning Of Spatially Resolved Transcriptomics Data, Hou-Cheng Yang, Huimin Li, Guanyu Hu, Qiwei Li

School of Mathematical & Statistical Sciences Faculty Publications

Recent advancements in spatially resolved transcriptomics (SRT) technologies have enabled the comprehensive molecular and spatial characterization of single cells, providing valuable insights into the cellular organization of tissues. SRT techniques, such as single-molecule fluorescence in situ hybridization (FISH)-based methods (e.g., seqFISH, STARmap) and next-generation sequencing (NGS)-based methods (e.g., spatial transcriptomics, 10x Visium), allow for the measurement of gene expression across large populations of cells or tissue spots. These approaches generate high-dimensional data that integrate both molecular profiles and spatial context, which is crucial for understanding tissue structure and function in areas like development, neuroscience, and cancer biology. Identifying spatially variable …

Branding, Catalogs, And Institutional Identity: The Libraries Of Edfu And Alexandria In Historical Perspective, Patrick Roughen

Library Philosophy and Practice (e-journal)

This article examines library catalogs as brand artifacts in the context of two ancient libraries: the Library of Alexandria and the library of the Temple of Horus at Edfu, Egypt. Drawing on Pierre Bourdieu’s concept of symbolic capital and brand theory, this research argues that the catalogs of these two institutions functioned as early branding instruments. The Pinakes, the catalog of the Library of Alexandria, projected a brand of universal knowledge and intellectual prestige, and the inscribed wall catalog at Edfu reflected a brand focused on sacred authority and the sustaining of cosmic order (Ma'at).  Together, they illustrate two opposing …

An Unsolved Theft, Tim Pyatt

Library Philosophy and Practice (e-journal)

This article explores the mysterious theft of Civil War narratives from the libraries of the University of North Carolina and Duke University in the late 1970s while the author was an undergraduate at Duke. Using records preserved in the Duke University Archives and personal accounts, the author pieces together how the theft was discovered and the investigation was conducted. Potential suspects included the notorious thieves James Shinn and Stephen Blumberg as well as individuals identified during the investigation. The secrecy around the investigation as well as the effort to protect institutional reputation may have ultimately led to the theft never …

Sequential Triple Treatment Of Recycled Coarse Aggregates: Mechanical, Durability, And Microstructural Performance Of Concrete With Mechanistic Insights, Ashita Singh, Boksun Kim, Harish Panghal, Sandeep Chaudhary

School of Engineering, Computing and Mathematics

The weak interfacial transition zone (ITZ) and high porosity of recycled coarse aggregates (RCA) limit their use in structural concrete. A sequential triple-treatment: HCl chemical treatment, mechanical abrasion, and cement slurry coating, was developed to densify the ITZ. Testing 198 specimens across six mix designs (0–100% RCA), TTRCA at 25% and 50% retained 92.1% and 87.3% of compressive strength, 93.6% and 87.7% of flexural strength, and 95.6% and 89.9% of splitting tensile strength versus the NCA control. Resistivity reached 81–91% of control; shrinkageremained 8–18% above control. XRD confirmed reduced Ca(OH)2 content with enhanced C–S–H formation; SEM revealed reduced ITZ porosity. …

Digitize And Discard: A Campaign For Sustainable Av Stewardship, Cory L. Nimer, Ben Harry, Abby Beazer, Miya Jensen, Michael F. Gates

Faculty Publications

Archives and libraries face growing preservation challenges from aging audiovisual collections due to carrier degradation and playback equipment obsolescence. As the media becomes more difficult to access, its archival value decreases, leading to questions about its ongoing storage. One proposed solution has been to digitize and discard the original media, preserving the recordings as digital masters with derivative files for public access. The suggestion to reformat audiovisual materials raises questions for cultural heritage professionals, and each stakeholder group may have its own concerns. Yet as media capture and digital preservation technology improve, to maintain our program’s sustainability, we have begun …

Using Galex Uv Excess To Search For Metal-Poor Halo Stars, Chase L. Smith, Maxwell Moe, Megan Frank, Raven Cilley, Javier Fregoso, Alexander Gleason, Grace Nelson, Et Al.

Michigan Tech Publications

Metal-poor solar-type stars display a significant reduction in metal-line blanketing at short wavelengths, leading to an excess of near-ultraviolet (NUV) flux compared to their metal-rich counterparts. We utilize Galaxy Evolution Explorer Satellite (GALEX) NUV and Gaia DR3 photometry along with ground-based spectroscopy to establish a correlation between NUV excess and [Fe/H]. We construct a sample of 492 solar-type (F5-G9) halo stars with NUV excess and measured metallicities. We perform our own observations with the KOSMOS spectrograph at Apache Point Observatory’s 3.5 m telescope to measure the abundances of 13 halo stars, 11 of which did not have previous metallicity measurements. …

A Guide To Change Management Using The Sarah Model, Sara Kern, Sarah Barbrow, Sarah Jane Dooley, Sarah E. Lester, Sarah Over

Library Scholarship

Academic libraries are the heart of colleges and universities and, as such, are often centrally involved in and impacted by changes in the greater higher education landscape. For those working in these spaces, familiarity with strategies for managing change is essential to support yourself and others during especially turbulent times. The SARAH model, described below in bullet points with our modifications in brackets, offers a memorable way to understand responses to change, be they our own or others.

S - Shock or Surprise
A – Anger [Anxiety, Alert, or Anticipation]
R – Resistance or Rejection [Re-engagement, or Rationalization]
A - …

Where Evidence-Based Medicine Meets Ai: Promise, Pitfalls, And Practice, Sangil Lee, Joshua Davis, Ken Milne, Christina Shenvi, Lars K. Beattie, Martin Wegman, Laura Melville, Richard D. Shih, Bryan Kane

Department of Emergency Medicine Faculty Papers

No abstract provided.

Transformative Leadership In Community Schools: Building Equitable Cultures And Sustainable Community Partnerships For Student Success, Latiecea Janie Hailey-Brown

USF Tampa Graduate Theses and Dissertations

Abstract

This qualitative autoethnographic inquiry explored how transformative and relational leadership were enacted and evolved during the creation, development, and sustainability of a community partnership school, and how these leadership experiences shaped my understanding of leadership and influenced my development and identity as a leader. Grounded in a constructivist paradigm and framed within a scholarly practitioner orientation, I critically examined my leadership experiences as assistant principal and principal of Havenwood: A Community Partnership School, the first community school in Rosewood County, Florida. Through reflective analysis of leadership practices, relationships, and decision-making processes, I illuminated how my leadership contributed to student …

A Scoping Review Of Preventive Interventions To Reduce Violence Against Women And Girls In The Islamic Republic Of Iran, Wahiba Abu-Ras, Leena Babiker Idris, Shahira Amin, Ashley Butler, Patricia J. Kelly, Basil H. Aboul-Enein

College of Nursing Faculty Papers & Presentations

In Iran, violence against women (VAWG) remains highly prevalent, with reported rates ranging from 22.9% to 66%, underscoring the need for effective, contextually grounded interventions.   This scoping review aimed to systematically identify, map, and critically appraise intervention strategies addressing VAWG in Iran.   Guided by PRISMA-ScR and the PICOS framework, comprehensive searches were conducted across nine databases from 2000 to September 2024. Eligible studies included intervention-based research conducted in Iran that reported outcomes related to violence reduction, psychological well-being, or empowerment. Thirteen studies met the inclusion criteria.   The included studies demonstrated heterogeneous designs, theoretical frameworks, and outcome measures. Four interventions targeted …

Assessing The Effect Of Chromolaena Odorata On Maize (Zea Mays L.) Growth And Yield In The Semi-Deciduous Forest Zone Of Côte D’Ivoire, Roger Bayala, Lisette Zeh Tokpa, Firmin Kouamé Konan, Kouamé Emile Ange Brou, Ambroise Casimir Laopé Siene, Pauline Amanko Ndouba, Nathanael A. Bogie, Sabas Sadaiou Yao Barima

Faculty Research, Scholarly, and Creative Activity

Chromolaena odorata is a dominant pioneer species in the successional vegetation following deforestation in humid and sub-humid tropical regions. Despite its prevalence, the specific interactions between C. odorata and subsequent food crops remain poorly characterized. This study aimed to evaluate the influence of C. odorata on the growth and yield of maize (Zea mays L.) under varying nutrient regimes. The experiment employed a randomized complete block design to assess the interaction between shrub presence (present vs. absent) and fertilization (0 or 1× the recommended N–P–K rate). The results indicated that the presence of C. odorata significantly increased maize height, stem …

Disability Stigma, Disability Identity, And Psychological Distress Among Young Adults With Disabilities, Dylan G. Serpas

USF Tampa Graduate Theses and Dissertations

Disability discrimination is positively associated with psychological distress. Internalized disability stigma or the extent to which negative beliefs about one’s disability become personally adopted is implicated as a mediator. Moreover, disability identity processes, including identity affirmation and rejection may shape downstream consequences of navigating disability discrimination and internalization processes. These relationships are particularly relevant among young adults with disabilities (YAWD) who navigate a critical developmental period characterized by identity formation and heightened perception to social evaluation. In this study, 233 YAWD aged 18 to 25 completed a cross-sectional survey measuring disability microaggressions, internalized disability stigma, disability identity (rejection and affirmation), …

The Nature Of Physical Bravery: A Principal Component Analysis Of Bravery Using Personality Attributes, Trauma History, And Resilience In A Mixed Military And Civilian Sample, Colin Simsarian, Daniel Baldini, Brenda E. Hammond, Julianna Christofi, Sana F. Usmani, Holly M. Mcgrath, Carolina Rader, Erik Wendel Rice, James Moses, Bruce Bongar

Heroism Science

Heroism is a complex phenomenon shaped by psychological constructs such as bravery and courage, yet empirical research on physical bravery remains limited. This study examined the relationships among physical bravery, personality traits, trauma history, and resilience in a sample of military servicemembers and civilians (N = 197; M age = 27.69). Participants completed the Physical Bravery Survey, and data were analyzed using principal component analysis. Results identified four components explaining 70.52% of the variance in responses. Findings suggest that physically brave individuals tend to be adventurous, cognitively flexible, self-confident, humorous, resilient, and more likely to report a history of trauma. …

Program (Pdf), Department Of Orthopaedics

Dept. of Orthopaedics: Robert D. D’Ambrosia Lectureship & Research Day

Program with abstracts for the 22nd Annual Dept of Orthopaedics Annual Robert D. D’Ambrosia Lectureship & Research Day held June 20, 2026.

Discrete Fracture Network Application To Rock Slope Stability In An Open Pit Mine, Elvis Karikari Mensah, Erzah Ackah, Reginald Hammah, Hani Mitri

Journal of Sustainable Mining

The stability of rock slopes in open pit mines is crucial for the safety and efficiency of the mining operation. Conventional stability analysis methods, such as kinematic and limit equilibrium analyses, primarily focus on identifying structural failure mechanisms and evaluating their factors of safety. Although insightful, these approaches do not accurately estimate failure volumes and block locations due to their limited consideration of joint frequency and persistence, which are key parameters in understanding block geometries. Discrete fracture network (DFN) modelling addresses these limitations by explicitly simulating rock mass discontinuities in 3D, which automatically incorporates joint spacing and persistence.

This paper …

Vector-Borne Viral Diseases In Horses, Sunutcha Suntrarachun

The Thai Journal of Veterinary Medicine

Vector-borne viral diseases are major threats to equine health worldwide. These infections are transmitted by arthropod vectors such as mosquitoes, biting midges, and horseflies, resulting in clinical manifestations ranging from mild febrile illness to severe neurological, respiratory, circulatory, or hematologic disorders with high mortality rates. Major equine vector-borne viral diseases include African horse sickness (AHS), equine infectious anemia (EIA), equine encephalomyelitis (Eastern: EEE, Western: WEE, and Venezuelan: VEE), West Nile virus (WNV), and Japanese encephalitis (JE). Each disease is caused by a distinct viral pathogen and transmitted by specific vectors that influence their epidemiology and geographic distribution. Transmission occurs through …

Reference Values For Intraocular Pressure In Collared Scops Owls (Otus Lettia) Measured Using Rebound Tonometry, Yun-Shan Chiu, Chau-Hwa Chie, Pin-Huan Yu, Chung-Tien Lin

The Thai Journal of Veterinary Medicine

In this study, we aimed to establish species-specific reference values for intraocular pressure (IOP) in clinically healthy collared scops owls (Otus lettia) using rebound tonometry. Twelve free-living owls were included, and twentyfour eyes were examined. All owls were physically restrained in an upright position without sedation. Intraocular pressure was measured in both eyes using rebound tonometry (TONOVET; iCare Finland Oy, Vantaa, Finland) in d mode. No significant difference in IOP was observed between the right and left eyes. The mean IOP values were 10.42 ± 1.24 mmHg (median, 11 mmHg; range, 8–12 mmHg) in the right eye and 10.75 ± …

A Storm-Ai Primer With An Operationally Representative Example, Shiu-Kai Chin, Matthew Clark, Garrett Katz, Jae C. Oh, William Young

Electrical Engineering and Computer Science - All Scholarship

A STORM-AI Primer with an Operationally Representative Example presents the Systems-Theoretic Technical and Operational Risk Management with Artificial Intelligence (STORM-AI) methodology, a transdisciplinary framework for establishing the trustworthiness of mission systems that may incorporate AI components. The core value proposition of STORM-AI is mission assurance—ensuring that mission systems behave with the predictability and proportionality required by senior leadership and demanded by international humanitarian law. STORM-AI achieves this by faithfully preserving commander's intent from high-level mission descriptions down to hardware-level behavioral specifications through a structured sequence of four formally grounded models: a Mission Model, a Protection (Loss Control) Model, a Security …