Digital Commons Network^™

Graphene In A Uniform Magnetic Field, Ankur Das

Theses and Dissertations--Physics and Astronomy

We study monolayer graphene in a uniform magnetic field in the absence and presence of interactions. In the non-interacting limit, for p/q flux quanta per unit cell (p, q are coprime integer), the central two bands have 2q Dirac points in the Brillouin zone (BZ) in the nearest-neighbor model. These touchings and their locations are guaranteed by chiral symmetry and the lattice symmetries of the honeycomb structure. If we add a staggered potential and a next-nearest-neighbor hopping we find that their competition leads to a topological phase transition. We also study the stability of the Dirac touchings to one-body perturbations …

The Pion Form Factor And Momentum And Angular Momentum Fractions Of The Proton In Lattice Qcd, Gen Wang

Theses and Dissertations--Physics and Astronomy

Lattice Quantum Chromodynamics (QCD) provides a way to have a precise calculation and a new way of understanding the hadrons from first principles. From this perspective, this dissertation focuses first on a precise calculation of the pion form factor using overlap fermions on six ensembles of 2+1-flavor domain-wall configurations generated by the RBC/UKQCD collaboration with pion masses varying from 137 to 339 MeV. Taking advantage of the fast Fourier transform, low-mode substitution (LMS) and the multi-mass algorithm to access many combinations of source and sink momenta, we have done a simulation with various valence quark masses and with a range …

Large N Fields And Holography, Animik Ghosh

Theses and Dissertations--Physics and Astronomy

We study (nearly) AdS/CFT holography within the context of the Sachdev-Ye- Kitaev (SYK) model. We present a systematic procedure to extract the dynamics of the low energy Schwarzian mode in SYK type models with a single energy scale J and emergent reparametrization symmetry in the infrared within the framework of perturbation theory. We develop a systematic approach using Feynman diagrams in bilocal theory to obtain a formal expression for the enhanced and O(1) corrections to the bilocal propagator and apply this general technique to large q SYK. We show that the Schwarzian theory describes a sector of a general class …

Electrical And Magnetic Transport Properties Of Periodic And Aperiodic Artificial Spin Ice Systems, Justin Woods

Theses and Dissertations--Physics and Astronomy

In recent years, the topic of magnetic frustration in systems and the effect that frustration can have on system dynamics has been a rich environment for study. One such system that lends itself directly to this study are systems of single domain ferromagnetic bars in two dimensions. These ferromagnetic bars can be fabricated from a thin film using current lithography techniques. The bars are fabricated in such a way that their shape anisotropy dictates the magnetization of the bar will be a single domain, Ising-like magnetic moment. These single domain magnetic bars scan be arranged to introduce frustration of their …

Sensitivity Of Electron-Proton Coincidence Asymmetries In Neutron Beta-Decay To Scalar And Tensor Interactions, Subash C. Nepal

Theses and Dissertations--Physics and Astronomy

We study the combined sensitivity of measurements of electron-proton coincidence asymmetries in polarized neutron beta-decay together with a measurement of the electron energy spectrum in unpolarized neutron beta-decay to beyond Standard Model (BSM) scalar and tensor interactions, via the appearance of such BSM physics in the Fierz interference terms b and b_v. Whereas measurements of the electron energy spectrum directly probe b, both the proton and neutrino asymmetries for which experimental results exist are not sensitive to b_v, but effectively to b - b_v. This results in reduced sensitivity to BSM scalar and …

A Theoretical And Experimental Study Of Charge Transport In Organic Thermoelectric Materials And Charge Transfer States In Organic Photovoltaics, Ashkan Abtahi

Theses and Dissertations--Physics and Astronomy

Applications of organic electronics have increased significantly over the past two decades. Organic semiconductors (OSC) can be used in mechanically flexible devices with potentially lower cost of fabrication than their inorganic counterparts, yet in many cases organic semiconductor-based devices suffer from lower performance and stability. Investigating the doping mechanism, charge transport, and charge transfer in such materials will allow us to address the parameters that limit performance and potentially resolve them. In this dissertation, organic materials are used in three different device structures to investigate charge transport and charge transfer. Chemically doped π-conjugated polymers are promising materials to be used …

Effects Of Aperiodicity And Frustration On The Magnetic Properties Of Artificial Quasicrystals, Barry Farmer

Theses and Dissertations--Physics and Astronomy

Quasicrystals have been shown to exhibit physical properties that are dramatically different from their periodic counterparts. A limited number of magnetic quasicrystals have been fabricated and measured, and they do not exhibit long-range magnetic order, which is in direct conflict with simulations that indicate such a state should be accessible. This dissertation adopts a metamaterials approach in which artificial quasicrystals are fabricated and studied with the specific goal of identifying how aperiodicity affects magnetic long-range order. Electron beam lithography techniques were used to pattern magnetic thin films into two types of aperiodic tilings, the Penrose P2, and Ammann-Beenker tilings. SQUID …

Business Week Program, February 24-27, 2020, Illinois State University, College Of Business

Business Week

No abstract provided.

What Contributes To High Adolescent Pregnancy Rates In Ecuador? A Secondary Analysis Of A Qualitative Study, Isabel D. Gollmar, Hartley C. Feld

Posters-at-the-Capitol Presentations

Introduction: Ecuador has the second highest rates of adolescent pregnancy in South America. Adolescent pregnancy is associated with negative health implications, including miscarriage, neonatal and maternal demise, cephalopelvic disproportion, and illness throughout infancy. Additionally, adolescent pregnancy perpetuates the cycle of poverty and is associated with lower educational attainment and increased reliance on social services.

Purpose: The purpose of this study was to describe experiences that contributed to unintended adolescent pregnancy of Ecuadorian women living in a low-resource community. Specifically, this work aimed to identify barriers to seeking or utilizing birth control in sexually active adolescents. The long-term goal of this …

Picture The Magic: Exploring Black Girl Identity Using Photovoice, Leha Anaya Hawkins

University of the Pacific Theses and Dissertations

Using a youth-led participatory action inquiry and photovoice methodology, this study investigated the self-perceptions of Black girls in a suburban area of Northern California. The objective of the project was to explore the perspectives and lives of Black girls. It is through gained insight from their lived experiences that we can come to understand their needs and develop approaches to advance their own holistic empowerment. By gathering self-perceptions of Black girls using photovoice, the project aimed to inform youth workers, educators, and youth-serving organizations such as Magic Black Girls Leadership Institute (MBG) on how to meet the needs and cultivate …

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Back Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Back Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Generation Of Neural Stem Cells (Nscs) From Human Fibroblasts Using Qq-Modified Sox2 And Neurod1 Proteins, Abdullah Ibrahim Alhomoudi

Wayne State University Theses

The generation of induced neural stem cells (iNSCs) and induced neuronal cells (iNCs) from somatic cells provides new avenues for basic research and potential transplantation therapies for neurological diseases. However, clinical applications must consider the tumor formation capabilities of the implanted cells, the inability of iNCs to self-renew in culture, and reprogramming methods that use retroviral transduction which permanently alter genetic network of the cells. Here we report the generation of protein-induced neural stem cells (piNSCs) from human dermal fibroblasts using QQ-SON pluripotent reprogramming as a tool to quickly reset the time clock of the human somatic fibroblasts to a …

Evaluation Of Autoantibodies To Paraneoplastic Antigens As Early Detection Biomarkers For High-Grade Serous Ovarian Cancer, Laura Catherine Hurley

Wayne State University Dissertations

The majority of ovarian cancer cases are diagnosed at an advanced stage metastatic disease with poor prognosis due to non-specific symptoms and lack of early detection methods. This study evaluates autoantibodies against tumor antigens to identify candidate biomarkers for the early detection of ovarian tumors in high-risk women. Paraneoplastic antigens are associated with autoimmune diseases termed paraneoplastic neurological syndromes (PNSs), which develop when the unregulated immune response against a tumor also targets healthy cells. Notably, a set of antibodies is found in PNS patients with ovarian cancer, identifying highly immunogenic antigens in the tumor. In this dissertation work, we have …

Effect Of An Educational Intervention On Coronary Artery Disease Knowledge In Men And Women At Risk For Coronary Artery Disease, Rochelle Anderson-Doyley

Doctor of Nursing Practice Projects

Background

Coronary artery disease (CAD) is the leading cause of death in the United States. The management of CAD, a preventable disease, has significant implications for health and wellness outcomes in the United States. Decades of research have examined the role and effectiveness of an educational intervention in promoting the patient's knowledge of and ability to manage risk factors for CAD. This project examined the effectiveness of an educational tool implemented in a primary care setting in improving patients' knowledge about CAD risk factors.

Method

The research design was a non-experimental one-group pre-test and post-test design. After receiving institutional review …

Ehr Phenotyping For Research Recruitment: Researcher, Irb, And Physician Perspectives On Approaches To Contacting Patients, Laura M. Beskow, Kahtleen M. Brelsford, Catherine Hammack-Aviran

Law Faculty Scholarship

This qualitative study investigates stakeholder perspectives on the use of electronic health record (EHR) phenotyping to identify and recruit patients for clinical research. Interviews with researchers, institutional review board (IRB) chairs, and primary care physicians explored attitudes toward different approaches for contacting potentially eligible patients. Key themes included trust, privacy, research efficiency, and the impact of recruitment practices on physician–patient relationships. While participants generally viewed both physician-mediated and direct researcher contact as acceptable, many preferred physician involvement to maintain trust and credibility. The study also explored opt-in and opt-out recruitment strategies, revealing divided opinions regarding their appropriateness. The findings highlight …

Video Advance Directives: Growth And Benefits Of Audiovisual Recording, Thaddeus Mason Pope

SMU Law Review

No abstract provided.

Teaching World Communities As Cultural Translation: A Third Grade Unit Of Study, Hanadi Shatara, Debbie Sonu

Publications and Research

This article bridges scholarship in global education with ele-mentary classroom teaching by presenting a series of lessons that challenge the idea of national culture as fixed and stable. The land we share is most certainly affected by its political borders, but it is also constructed out of the multiplicity of social relations that exist both within and on either side of a border. Yet very often, when teaching about another country, we tend to rely on misappropriated generalizations around food, holidays, and folktales that do not honor how culture moves, changes, and becomes translated by its unique and varied peoples.

Definitions Of Language And Language Learning., Virginia Valian

Publications and Research

A prevalent view in monolingual first language acquisition is that children acquire their native language. One’s first reaction is, “well, yes, how could it be otherwise?” The study of ‘heritage’ learners suggests a reconsideration of that view. Polinsky and Scontras (Polinsky & Scontras, 2019) present a fascinating review of the phenomena characterizing heritage learners and propose several underlying mechanisms to account for those phenomena. Their review encourages a broader view of language acquisition. To me it suggests that variability is the norm.

Statistical Analysis Of Demographic Effects On Insurance Coverage Of Perinatal And Neonatal Morbidity, Madeline Durbin

Undergraduate Honors Thesis Projects

In the United States of America, Ohio has one of the worst neonatal and perinatal death rates. Within Ohio, Montgomery County has an above average neonatal and perinatal death rate. This statistic can be lowered if more women in Montgomery County have health insurance. They would be more likely to seek out prenatal health care, since they would no longer have to pay as much money out-of-pocket. This would allow medical professionals to be able to diagnose and treat any potential issues in the mother or child earlier. Having health insurance would also prevent mothers-to-be from seeking out other potentially …

Can The Carbon And Nitrogen Isotope Values Of Offspring Be Used As A Proxy For Their Mother's Diet? Using Foetal Physiology To Interpret Bulk Tissue And Amino Acid Δ15N Values, Nico Lübcker, John P. Whiteman, Seth D. Newsome, Robert P. Millar, P.J. Nico De Bruyn

Biological Sciences Faculty Publications

The measurement of bulk tissue nitrogen (δ¹⁵N) and carbon isotope values (δ¹³C) chronologically along biologically inert tissues sampled from offspring can provide a longitudinal record of their mothers' foraging habits. This study tested the important assumption that mother-offspring stable isotope values are positively and linearly correlated. In addition, any change in the mother-offspring bulk tissues and individual amino acids that occurred during gestation was investigated. Whiskers sampled from southern elephant seal pups (Mirounga leonina) and temporally overlapping whiskers from their mothers were analyzed. This included n = 1895 chronologically subsampled whisker segments for bulk …

A Simple, Inexpensive Method For Mark-Recapture Of Ixodid Ticks, Alexis White, Robin Minch, Lindsey Bidder, Holly Gaff

Biological Sciences Faculty Publications

Mark-recapture techniques have been widely used and specialized to study organisms throughout the field of biology. To mark-recapture ticks (Ixodida), we have created a simple method to mark ticks using nail polish applied with an insect pin secured in a pencil that allows for a variety of questions to be answered. For measuring tick control efficacy, estimating population estimates, or measuring movement of ticks, this inexpensive mark-recapture method has been easily applied in the field and in the lab to provide useful data to answer a variety of questions about ticks.

Evolutionary Determinism And Convergence Associated With Water Column Transitions In Marine Fishes, Melissa Rincon-Sandoval, Emmanuelle Duarte-Ribeiro, Aaron M. Davis, Aintzane Santaquiteria, Lily C. Hughes, Carole C. Baldwin, Luisángely Soto-Torres, Arturo Acero P., H.J. Walker Jr, Kent E. Carpenter, Marcus Sheaves, Guillermo Orti, Dahiana Arcila, Ricardo Betancur-R.

Biological Sciences Faculty Publications

Repeatable, convergent outcomes are prima facie evidence for determinism in evolutionary processes. Among fishes, well-known examples include microevolutionary habitat transitions into the water column, where freshwater populations (e.g., sticklebacks, cichlids, and whitefishes) recurrently diverge toward slender-bodied pelagic forms and deep-bodied benthic forms. However, the consequences of such processes at deeper macroevolutionary scales in the marine environment are less clear. We applied a phylogenomics-based integrative, comparative approach to test hypotheses about the scope and strength of convergence in a marine fish clade with a worldwide distribution (snappers and fusiliers, family Lutjanidae) featuring multiple water-column transitions over the past 45 million years. …

Translating Globally Threatened Marine Species Information Into Regional Guidance For The Gulf Of Mexico, Kyle Strongin, Beth Polidoro, Christi Linardich, Gina Ralph, Kent Carpenter

Biological Sciences Faculty Publications

A comprehensive understanding of the status of marine organisms in the Gulf of Mexico is critical to the conservation and improved management of marine biodiversity in the region. Threats and extinction risk, based on application of the IUCN Red List Categories and Criteria at the global level, were analyzed for 1,300 Gulf of Mexico marine species. These species include all known marine mammals, sea birds, marine reptiles, cartilaginous fishes, bony shorefishes, corals, mangroves, seagrasses and complete clades of select invertebrates. Analyses showed that 6% of these species are threatened, 2% Near Threatened, 9% Data Deficient, and 83% Least Concern. However, …

Self-Reporting, Unf Emergency Management

UNF COVID-19 Response

Information on Self-Reporting Covid-19 symptoms

Meet With Peace Of Mind, Adam W. Herbert University Center

UNF COVID-19 Response

Protocols for meetings at the Adam W. Herbert University Center

Covid-19 Event Information, Unf Fine Arts Center

UNF COVID-19 Response

Covid protocols for Fine Arts Center events

Housing And Residence Life Coronavirus (Covid-19) Updates, Unf Housing And Residence Life

UNF COVID-19 Response

Residence Life Covid-19 Updates