Digital Commons Network^™

A Trail Of Dark-Matter-Free Galaxies From A Bullet-Dwarf Collision, Pieter Van Dokkum, Zili Shen, Michael A. Keim, Sebastian Trujillo-Gomez, Shany Danieli, Dhruba Dutta Chowdhury, Roberto Abraham, Charlie Conroy, J. M.Diederik Kruijssen, Daisuke Nagai, Aaron Romanowsky

Faculty Research, Scholarly, and Creative Activity

The ultra-diffuse galaxies DF2 and DF4 in the NGC 1052 group share several unusual properties: they both have large sizes1, rich populations of overluminous and large globular clusters2–6, and very low velocity dispersions that indicate little or no dark matter7–10. It has been suggested that these galaxies were formed in the aftermath of high-velocity collisions of gas-rich galaxies11–13, events that resemble the collision that created the bullet cluster14 but on much smaller scales. The gas separates from the dark matter in the collision and subsequent star formation leads to the formation of one or more dark-matter-free galaxies12. Here we show …

Black Carbon Aerosol Number And Mass Concentration Measurements By Picosecond Short-Range Elastic Backscatter Lidar, Romain Ceolato, Andrés E. Bedoya-Velásquez, Frédéric Fossard, Vincent Mouysset, Lucas Paulien, Sidonie Lefebvre, Claudio Mazzoleni, Christopher Sorensen, Matthew J. Berg, Jérôme Yon

Michigan Tech Publications, Part 1

Black carbon aerosol emissions are recognized as contributors to global warming and air pollution. There remains, however, a lack of techniques to remotely measure black carbon aerosol particles with high range and time resolution. This article presents a direct and contact-free remote technique to estimate the black carbon aerosol number and mass concentration at a few meters from the emission source. This is done using the Colibri instrument based on a novel technique, referred to here as Picosecond Short-Range Elastic Backscatter Lidar (PSR-EBL). To address the complexity of retrieving lidar products at short measurement ranges, we apply a forward inversion …

Non-Reacting Spray Characteristics Of Gasoline And Diesel With A Heavy-Duty Single-Hole Injector, Tom Tzanetakis, Jaclyn Johnson, Henry Schmidt, William Atkinson, Jeffrey Naber

Michigan Tech Publications, Part 1

Gasoline compression ignition (GCI) is a promising combustion technology that could help alleviate the projected demand for diesel in commercial transport while providing a pathway to achieve upcoming CO2 and criteria pollutant regulations for heavy-duty engines. However, relatively high (i.e., diesel-like) injection pressures are needed to enable GCI across the entire load range while maintaining soot emissions benefits and managing heat release rates. There have only been a limited number of previous studies investigating the spray characteristics of light distillates with high-pressure direct-injection hardware under charge gas conditions relevant to heavy-duty applications. The current work aims to address this issue …

The Ideal Elizabethan Marriage (Or Naught): How Fletcher’S Comedy, The Tamer Tamed Serves As A Sequel, Homage And Riposte To Shakespeare’S The Taming Of The Shrew, Katherine Brillante

Student Theses

In this thesis, I take my cue from Emma Smith, who observes that John Fletcher’s The Woman’s Prize, or The Tamer Tamed is “a sequel, an homage, and a riposte to Shakespeare’s own Taming of the Shrew” (xii). While demonstrating Smith’s point, I also explore the ideology of marriage in Renaissance England, considering what it means to be a rebellious woman with respect to that institution. While, as Ann Jennalie Cook observes, “a play is not an exact replica of the customs of the time” (83), these two plays nevertheless illuminate the ways in which marriage customs during this …

Combined Application Of Patient-Derived Cells And Biomaterials As 3d In Vitro Tumor Models, Asbiel Hasbum, Ozan Karabulut, Ruben Edgar Reyes, Claudio Ricci, Alessandro Franchi, Serena Danti, Sue Anne Chew

Health & Biomedical Sciences Faculty Publications

Although advances have been made in cancer therapy, cancer remains the second leading cause of death in the U.S. and Europe, and thus efforts to continue to study and discover better treatment methods are ongoing. Three-dimensional (3D) tumor models have shown advantages over bi-dimensional (2D) cultures in evaluating the efficacy of chemotherapy. This commentary aims to highlight the potential of combined application of biomaterials with patient-derived cancer cells as a 3D in vitro model for the study and treatment of cancer patients. Five studies were discussed which demonstrate and provided early evidence to create 3D models with accurate microenvironments that …

Big Data, Both Friend And Foe: The Intersection Of Privacy And Trade On The Transatlantic Stage, Gabrielle C. Craft

University of Miami International and Comparative Law Review

This Note analyzes the data privacy protection initiatives implemented by the European Union and the United States and their effects on international trade. As technology develops, the feasibility of data collection increases, allowing for the collecting of inconceivable amounts of data information. Consequently, this data includes personal information, thus implicating privacy concerns and the need for data privacy protection regulations. Data privacy focuses on the use and governance of personal data and how the data is gathered, collected, and stored. In 2018, the European Union enacted the General Data Protection Regulation (GDPR), which sets out highly stringent standards for how …

Sociodemographic And Biological Factors Of Health Disparities Of Mothers And Their Very Low Birth-Weight Infants, June Cho, Lung-Chang Chien, Diane Holdtich-Davis

Nursing Faculty Research

Background: Black mothers and their very low birth-weight infants in the United States have increased risk of adverse neonatal and maternal health outcomes compared with White mothers and infants. Disparities in adverse birth outcomes associated with sociodemographic factors are difficult to quantify and modify, limiting their usefulness in assessing intervention effects. Purpose: To test hypotheses that (1) the biological factors of maternal testosterone and cortisol are associated with sociodemographic factors and (2) both factors are associated with neonatal health and maternal mental health and healthy behaviors between birth and 40 weeks' gestational age. Methods: We used a descriptive, longitudinal design. …

Utilisation Of Library Information Resources By Undergraduates Of Public University In Ogun State, Rahman Olorunleke Arowolo, B.A. Ajiboye, Samuel Kolawole Adio

Library Philosophy and Practice (e-journal)

The library has the singular function of collecting, organising, preserving, conserving and making information accessible to potential users in different formats. This study examined the correlation between utilisation of print and electronic resources by Undergraduates of Olabisi Onabanjo University, Ago-Iwoye and Tai solarin University, Ijagun, Ogun State, Nigeria. Structured questionnaire was used to obtain data from 380 students from the total population 39,256 of the undergraduates in the institutions, while for the qualitative data the researcher interviewed the Heads of Automation and Readers’ Services Units of the three universities studied. Data collected were analysed using descriptive statistics, frequencies, percentage, mean, …

Who Has My Back? Perceptions Of Anti-Racist And Anti-Sexist Allyship Are Predicted By Race, Gender, And Past Behavior, R. Grace Drake

Arts & Sciences Graduate Student Theses and Dissertations

After facing racial or gender discrimination, people often seek support or allyship from others. However, who will provide effective support or allyship is often uncertain. To understand how people of color and women navigate this uncertainty, in two studies we randomly assigned participants to read a series of vignettes about potential allies. In each vignette, a person was described as either Black, Asian, Hispanic, or White and either a man or woman. Participants also sometimes learned that the person had a history of allyship behavior. Participants were then asked to envision that someone made a racist (Study 1) or sexist …

Becoming A More Empathetic Leader And Person, Rachel Shellstrom

Undergraduate Honors Theses

When defining empathy, the most common definition is “stepping into someone else’s shoes.” Along with this definition, many also share that it is important to have empathy and be an empathetic person. Yet, when thinking about its importance and this definition, a few questions arise: can we actually step into someone else’s shoes? Can we truly understand what someone else is feeling and experiencing if we are not them or do not hold the same identities that they do? Through a deeper exploration of existing empathy building certificate programs and empathy research, this thesis project explores these exact questions and …

An Even 2-Factor In The Line Graph Of A Cubic Graph, Seungjae Eom, Kenta Ozeki

Theory & Applications of Graphs

An even 2-factor is one such that each cycle is of even length. A 4- regular graph G is 4-edge-colorable if and only if G has two edge-disjoint even 2- factors whose union contains all edges in G. It is known that the line graph of a cubic graph without 3-edge-coloring is not 4-edge-colorable. Hence, we are interested in whether those graphs have an even 2-factor. Bonisoli and Bonvicini proved that the line graph of a connected cubic graph G with an even number of edges has an even 2-factor, if G has a perfect matching [Even cycles and …

Defining Dyslexia Within And Across Disciplines: A Systematic Review Of The Literature, Ann Marie Trumbo

Theses and Dissertations

Purpose: In the present study, we conducted a systematic review to investigate the core features of the definition of dyslexia across different disciplines according to their associated professional organizations and published research in order to evaluate the presence and type of inconsistencies within and across disciplines in how dyslexia is defined. Method: Definition statements of dyslexia from professional organizations in medicine, education, speech-language pathology, psychology, and the International Dyslexia Association were collected via scope of practice guidelines or via the organization's official website. Using a database with a wide disciplinary reach, we collected 764 of the most cited articles from …

Role Of Nk-Like Cd8+ T Cells During Asymptomatic Borrelia Burgdorferi Infection, Breanna M Scorza, Kurayi G Mahachi, Arin D Cox, Angela J Toepp, Danielle Pessoa-Pereira, Phyllis Tyrrell, Jesse Buch, Jennifer A Foltz, Dean Lee, Christine A Petersen

Open Access Publications

Lyme disease (LD) due to Borrelia burgdorferi is the most prevalent vector-borne disease in the United States. There is a poor understanding of how immunity contributes to bacterial control, pathology, or both during LD. Dogs in an area of endemicity were screened for B. burgdorferi and

Effect Of Static Magnetic Field On Focused Ultrasound Induced Blood-Brain Barrier Opening, Leqi Yang

McKelvey School of Engineering Graduate Student Theses & Dissertations

No abstract provided.

Design Of Polar Materials Using Materials Informatics And First-Principles Calculations, Jon Okenfuss

McKelvey School of Engineering Graduate Student Theses & Dissertations

Polar materials have a dipole moment or polarization. Ferroelectrics are a special class of polar materials wherein the polarization can be switched with an external electric field. Because of their characteristics, ferroelectrics are especially useful in adjustable capacitors, non-volatile memories, and sensors. Materials databases like Materials Project contain a large number of materials, but identifying new metastable polar, and more specifically ferroelectric materials can be time consuming. In this project, we train a machine learning model to distinguish between binary compounds having a wurtzite structure—which have a permanent polarization—and their nonpolar zincblende and rock salt polymorphs. We use this model …

Deconstructing Tiktok Videos On Mental Health: Cross-Sectional, Descriptive Content Analysis, Corey H. Basch, Lorie Donelle Phd, Rn, Fcan, Joseph Fera, Christie Jaime

Publications

BACKGROUND: Social media platforms that are based on the creation of visual media, such as TikTok, are increasingly popular with adolescents. Online social media networks provide valuable opportunities to connect with each other to share experiences and strategies for health and wellness. OBJECTIVE: The aim of this study was to describe the content of the hashtag #mentalhealth on TikTok. METHODS: This cross-sectional, descriptive content analysis study included 100 videos with the hashtag #mentalhealth on TikTok. All videos that included the hashtag #mentalhealth were analyzed and coded for the presence of content categories. Additionally, the comments to each video were viewed …

A Multi-Criteria Approach To Building Resilient Neighborhoods Through Green Space Investments In Sacramento, Luis E. Montes

Master's Projects and Capstones

The consequences of climate change and urbanization have increased heat, air pollution, and flood risks in urban areas. Green spaces—parks, trees, trails, and gardens—are multifunctional solutions that help communities adapt to these various climate vulnerabilities, promoting urban resiliency through the socio-ecological service they provide. Yet, low-income communities and neighborhoods of color are often deprived of these services. As a result, this study utilizes a multi-criteria analysis to assess a variety of social, climate, and green space indicators in North and South Sacramento, two racially diverse and historically marginalized communities, to recommend more robust green space implementation strategies. Priority areas are …

Preserving The Polychromy Of Antiquity: An Analysis Of Collections Stewardship And Colored Classical Antiquity Sculptures, Angelina D'Angelo

Seton Hall University Dissertations and Theses (ETDs)

Over the past centuries, scholars have worked to understand that the remaining pristine white marble of ancient Greece and Rome was once brightly colored. Through archeology, classical studies, art history, and conservation science research, several discoveries have been uncovered regarding polychromy and classical antiquity sculptures. In a parallel research track, museum professionals refine their understanding of collections stewardship, making preservation policies and procedures beneficial for various object types. Collections stewardship practices and polychromy research must converge to care for the remaining color on these classical antiquity sculptures. This research project works to connect the fields of polychromy research and collections …

88 Ave. Realty De Llc V. Castro

All Decisions

No abstract provided.

Renewable Energy Development On State Trust Lands, Ada C. Montague, Samuel J. Panarella, Peter Yould

Duke Environmental Law & Policy Forum

No abstract provided.

For The Sake Of The Smith Island Cake: A Reinterpretation Of The Stafford Act To Facilitate Culturally Informed Community Buyouts And Relocation, Chloe Shostak

Duke Environmental Law & Policy Forum

No abstract provided.

A Case Study Of Canadian Regulation Of Bpa: Insight Into The Science, Jaye Ellis, Arturo Papaluca, Myriam Hamtiaux, Barbara F. Hales, Bernard Robaire

Duke Environmental Law & Policy Forum

No abstract provided.

A Segmentation-Guided Deep Learning Framework For Leaf Counting, Xijian Fan, Rui Zhou, Tardi Tjahjadi, Sruti Das Choudhury, Qiaolin Ye

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Deep learning-based methods have recently provided a means to rapidly and effectively extract various plant traits due to their powerful ability to depict a plant image across a variety of species and growth conditions. In this study, we focus on dealing with two fundamental tasks in plant phenotyping, i.e., plant segmentation and leaf counting, and propose a two-steam deep learning framework for segmenting plants and counting leaves with various size and shape from two-dimensional plant images. In the first stream, a multi-scale segmentation model using spatial pyramid is developed to extract leaves with different size and shape, where the fine-grained …

Breaking Boundaries: Investigating The Experiences Of Racially Diverse Low Socioeconomic Status Students Through A Narrative Inquiry Approach, Ryan Jumamil

Dissertations

Across the US, there is growing inequality of class distribution in predominately white and elite colleges and universities. Although gaining access to these institutions is typically the first hurdle, it is not the only challenge racially diverse low socioeconomic status (SES) students face. By investigating the college experiences of racially diverse low SES students enrolled in a predominately white elite institution, this study creates the foundation for an imperative discussion on the relationship between students' identity and attendance at predominately white elite institutions.

Through a Narrative Inquiry research approach and using semi-structured interviews as a data collection tool, two themes …

Louisiana State University Health Sciences Center - 2022 - 148th Commencement, Office Of The Registrar, Lsu Health Sciences Center-No

Graduation & Commencement Programs

The program for the 148th Commencement of LSU Health Sciences Center - New Orleans held May 19, 2022.

Japanese Gender Trouble In Revolutionary France: Ikeda Riyoko's Shōjo Manga The Rose Of Versailles, Saki Hirozane

Dissertations and Theses

Although traditional gender norms are reinforced by pop-culture media in Japan, some comics aimed primarily at female readers fight against those same gender norms. Shōjo manga (Japanese girls' comics) are no exception and have done so since their "revolution" in the 1970s. In the 1970s, a new wave of young female shōjo manga artists pioneered a different kind of girls' manga because they created new perspectives for their young female readers.

Ikeda Riyoko's Rose of Versailles (Berusaiyu no bara, 1972-73), set in Revolutionary-Era France, changed how Japanese women could see themselves in the 1970s. In Rose of Versailles …

Transition To A Night Float System In Ophthalmology Residency: Perceptions Of Resident Wellness And Performance, Sahil Aggarwal, C. Ellis Wisely, Andrew Gross, Pratap Challa

Journal of Academic Ophthalmology

Abstract

Purpose The purpose of this study is to characterize the influence of a new night float rotation on resident wellness and performance in the Duke University Eye Center Ophthalmology Residency Program.

Methods We analyzed three classes of ophthalmology residents: one class (n = 4) utilized the new night float rotation with no daytime clinical duties, while two senior classes (n = 12) utilized the traditional call system wherein they had daytime and nighttime responsibilities. Residents completed a questionnaire regarding their perceptions of the night float rotation. Supervising attendings (n = 15) were also surveyed about their perceptions of the …

Boredom, Interoceptive Ability, And Emotional Eating, Erica Ahlich

USF Tampa Graduate Theses and Dissertations

Emotional eating is a commonly described phenomenon reported by individuals across the weight spectrum. Not only does existing evidence suggest it is not an effective emotion regulation strategy, but emotional eating is also associated with difficulty losing weight during weight loss interventions and other negative health outcomes. The majority of existing work in the area of emotional eating has focused on the broad dimensions of negative and positive affect. Yet, there are data suggesting that different emotions appear to produce different changes in eating behaviors, suggesting the importance of investigating the influence of discrete emotions on eating. The lack of …

The Iachr’S Comprehensive Response To The Covid-19 Pandemic And Its Intersectional Impacts On Human Rights, Antonia Urrejola Noguera, Soledad Garcia Muñoz

University of Miami International and Comparative Law Review

The region of the Americas is facing unprecedented humanitarian and social challenges as a consequence of the Covid-19 pandemic. As such, the regional institutions need to deliver rapid and effective responses to the region’s inhabitants. In this way, the Inter-American Commission on Human Rights (hereinafter IACHR or the Commission) has aimed to deliver a timely answer so that States, the Civil Society, and stakeholders can assure individuals that the treatment of the pandemic incorporates a human rights approach from the Inter-American System’s framework. The purpose of this work will be to give a brief takeaway on how the IACHR has …

The Gallery As A Site Of Convergence: The Role Of Creative Environments At Postsecondary Institutions, Jordán Francisco Sandoval

Master's Theses

Not enough research explores the role of creative environments at postsecondary institutions. In response, this qualitative research study focuses upon university galleries believing them to be exemplary artistic spaces within college campuses. Using a theoretical framework of place-consciousness, the researcher examined the functions of the Mary and Carter Thacher Gallery at the University of San Francisco (USF), paying close attention to the ways it engaged the academic community in terms of scholarship and instruction. Informed by grounded theory and phenomenology, this study interviewed five professors who integrated a gallery visit into their curriculum during the 2021-2022 academic year. Collecting these …