1,260 Works

Mobility as a Service (MaaS): Advocacy and Opposition in Europe

Henry Goodman
Mobility as a Service (MaaS) and a drive-by-wire car are the two unseemingly interrelated topics that have been chosen for my undergraduate thesis and technical capstone project, respectively. Examining each from a technical level and a socially conscious lens has enabled me to understand both their practical makeup and their relevance to society. Drive-by-wire is the ability to control motion subsystems automatically with a method other than human manipulation. For instance, some cars have drive-by-wire...

Synergistic Effects of Oxidation and Load on SiC/BN/SiC Ceramic Matrix Composite Degradation at Intermediate Temperatures

Kaitlin Detwiler
SiC/BN/SiC ceramic matrix composites (CMCs) are desirable for use in the hot section of jet engines, where temperatures can reach 1200°C or higher. However, due to thermal gradients and backside cooling, many SiC/BN/SiC CMC components will experience intermediate temperatures ranging from 600-800°C. Oxidation mechanisms in this intermediate temperature range are not well understood. CMCs in this region will also experience micro-cracking arising from mechanical and thermal stresses, increasing pathways for oxidant ingress. The following standalone...

Advancing Hyku: Open Source Institutional Repository Platform Development Final Report, October 2019-April 2022

Ellen Ramsey, Ilkay Holt, Rachael Kotarski, Brian Hole, Elisa Barrett & Sherry Lake
This report is a deliverable of the Advancing Hyku: Open Source Institutional Repository Platform Development project, funded by Arcadia—a charitable fund of philanthropists Lisbet Rausing and Peter Baldwin. The Advancing Hyku project completed design and implementation of specific advances to the open-source community repository product Hyku, part of the Samvera repository framework. These advances drive green open access and increase value to researchers with a combined approach of auto-population and expanding the array of integrated,...

Mediated Political Playground: Popular Entertainment Culture and Public Sphere Engagement among Young Adults in a Context of Political Contentiousness

Sarah Johnson-Palomaki
This dissertation explores the relationship between young people, their popular entertainment media, and playful engagement with politics in the civil/public sphere(s) within the context of a seemingly hostile political environment. Through qualitative focus group and follow-up diary and interview data, organized in friend groups and grounded in their popular culture, this project explores when and under what conditions different popular entertainment media may be a resource for playful political engagement or participation in the public...

Are Workers Effective Lawmakers?

Jacob Lollis
Are working-class legislators effective lawmakers? Intuitively, one may expect that lawmakers from manual labor, clerical, and service-based jobs (the working-class) are less effective than legislators who have previously worked in business, politics, or law (white-collar) occupations. The legislative effectiveness of the working-class, however, has not yet been empirically evaluated. This article addresses two primary questions. First, is there a class-based effectiveness gap between working-class and white-collar legislators? Second, do various institutional and contextual arrangements moderate...

Living Green: The Neoliberal Climate of Protestant Environmentalism

Kevin Stewart Rose
In April 1970, organizers of the first Earth Day hoped to herald a period of national environmental mobilization. But the actual nature of this new environmental politics was contested. A younger generation of leftist activists who had cut their teeth on anti-war protests, SDS meetings, and administrative building sit-ins hoped their brand of direct action would become the order of the day. Two months prior, a group of students in San Jose California tried to...

Predicting Hemodynamic Changes During Cardiac Hypertrophy

Vignesh Valaboju
Heart failure (HF), a progressive disorder with high mortality rates, currently affects 6 million Americans. One of the main causes of HF is left ventricular (LV) hypertrophy: a structural abnormality that results from growth of LV walls during cardiomyopathy, arterial hypertension, and/or valve disease. Valve diseases such as aortic stenosis and mitral regurgitation cause pressure and volume overloading of the heart, respectively. Chronic progression of volume and pressure overload leads to large amounts of LV...

In-sensor Synaptic Computing in a Curved Image Sensor via Three-Dimensional Heterogeneous Integration

Doeon Lee
Image sensor technology provides a bridge between the physical world of analogue image/light signals and virtual digital data by converting light signals to electrical signals. There has been a dramatic improvement in silicon-based image sensor technology, in which the number of pixels and nodes has been exponentially increased in virtue of the rapid development of semiconductor fabrication technology. When a large amount of raw data generated in the photodetectors are transported to the computing system...

Developing and Teaching a New Course on “Race Matters in Engineering and Technology

Rosalyn Berne
In response to the recent national outcry over racism in policing and other U.S. institutions, a new course on “Matters of Race in Engineering and Technology” was designed and taught by an engineering ethicist during the 2020-21 academic year, for undergraduate engineering students. This course explores sociotechnical systems underlying systemic racism, and considers the ethical culpability and moral responsibilities of the engineering profession and its professionals. This short presentation sums up the initial design and...

A New Approach for the 2030 Decennial Census - A 21st Century Census for a 21st Century Society

Sallie Keller & Stephanie Shipp
The founding fathers realized a census was necessary to establish the republican form of government based on the representation of the resident population as it distributed itself across the original 13 states and then spread into new territories, soon to become new states. The decennial census was a mechanism to apportion the House of Representatives based on each state's population size. It was early recognized that the massive effort to count everyone in the growing...

Building a Case Study of Migration and the Curated Data Enterprise - Essential Elements

Joseph Salvo, Stephanie Shipp & Stephanie Zhang
The Curated Data Enterprise (CDE) is both an infrastructure and a continuously evolving ambition to empower and enable Census Bureau scientists and their data users to develop together new measures of the nation’s people, places, and economy. The CDE could be an engine for better migration and mobility data, leading to improved planning for labor market changes, emergency response, and state revenue projections. State and local economic planners and demographers need information about the interplay...

The Role of Proline Isomerization as a Route for Opa-CEACAM Specificity

Ethan Sesco
Due to the prevalence of antibiotic use in recent decades, there has been a rise in antibiotic resistant bacterial infections. Bacterial gonorrhea is one such infection and the responsible bacterium, Neisseria gonorrhoeae, has reached superbug status with strains that are resistant to all available antibiotics. Neisseria triggers uptake by human cells by binding to carcinoembryonic antigen-like cell adhesion molecules (CEACAMs) on the surface of host cells via opacity associated proteins (Opa) located in the outer...

Near-Infrared Studies of Embedded Star Clusters

Chan Park
The Fan Mountain Near-Infrared Camera, FanCam, features an 8.7’ x 8.7’ field of view on 1024x1024 Teledyne Imaging Sensors HAWAII-1 detector array. The instrument mounts at ⨍ /15.5 focus of the 31 inch telescope. Its seeing-limited optical design, optimized for the JHK …

Quantifying Biophysical Heterogeneity by Single Cell Microfluidic Impedance Cytometry

Armita Salahi
Heterogeneity in biophysical properties, which is inherent to the functional and structural organization of biosystems, presents challenges to cell biologists and clinicians seeking to associate biological function and disease with particular markers. Current methods to quantify heterogeneity focus on biochemical properties, as quantified by single-cell flow cytometry after fluorescent staining for their characteristic cell surface proteins or by label-free Raman spectral methods. Cellular biophysical metrics, on the other hand, have often been restricted to size-based...

Data Science: Analytics

Don Brown
This learning shot in the Data Science Series will focus on the Analytics as a component of data science, having already been exposed to the data science framework (the 4+1 theory) in the 2nd episode of this series, the learner is ready to begin to understand more about the analytics domain. Analytics is defined as the procedures and methods used to turn data into useful information and includes everything from traditional statistical methods to advanced...

Data Science: Value Domain (Ethics)

Brian Wright
This learning shot in the Data Science Series will focus on the Value Domain, having already been exposed to the data science framework (the 4+1 theory) in the 2nd episode of this series, the learner is ready to begin to understand the details associated with this portion of the framework. This domain focuses more on the human-centered piece of data science and combines the traditional discipline of ethics with the professional activities of business planning,...

What We Want To Do As Americans: Jewish Political Activism and United States Refugee Policy, 1969-1981

Amy Fedeski
This dissertation explores the work of Jewish American Non-Governmental Organizations from 1969 to 1981, focusing on the advocacy efforts of the Jewish American activist groups most involved in migration issues during this period: Hebrew Immigrant Aid Society (HIAS), the American Jewish Committee (AJC), the Joint Distribution Committee (JDC), and the Council for Jewish Federations (CJF). It argues that in advocating for effective mechanisms for refugee admissions and resettlement funding, these NGOs effectively remade American refugee...

Exploring Role Identity and Resistance as a Complex System amongst Doctoral and Undergraduate STEM Students

Anne McAlister
STEM students assume many roles, including engineer, researcher, educator, and student, through which multiple role identities may form. When social expectations of roles become internalized, they become role identities. Role identities, especially engineering or science identity, relate to persistence and belonging in STEM. Roles that students take on can represent the culture of the institution and academia at large; thus, understanding academic role identity and how institutional norms may influence role identity is important in...

An Inexpensive Air Stream Temperature Controller and its use to facilitate temperature-controlled behavior in Drosophila

Ryan Sangston
Controlling the environment of an organism has many biologically relevant applications. Temperature-dependent inducible biological reagents have proven invaluable for elucidating signaling cascades and dissection of neural circuits. Here we develop a simple and affordable system for rapidly changing temperature in a chamber housing adult Drosophila melanogaster. Utilizing flies expressing the temperature-inducible channel dTrpA1 in dopaminergic neurons we show rapid and reproducible changes in locomotor behavior. This device should have wide application to temperature-modulated biological reagents.

Children's Understanding and Use of Prosocial Intentions

Stefen Beeler-Duden
Humans are social beings that rely heavily on our cooperative relationships (Tomasello et al., 2012). This predisposition to engage in cooperation and establish relationships likely accounts for our success as a species (Tomasello, 2009). In order to form these relationships, however, we must identify individuals who promise to be reliable, beneficial partners. Intentions help individuals navigate this difficult challenge, as they allow individuals to distinguish between self-interested versus truly generous partners and generate accurate predictions...

Computational Models of Engagement in Digital Health Platforms

Sonia Baee
Over the past decade, digital health technologies have transformed healthcare delivery offering more scalable, accessible, and individualized interventions. Especially in light of the COVID pandemic, these technologies are an appealing alternative to much-needed treatment outside the physician/clinician’s office. However, these platforms suffer from low engagement and high attrition rates, making it increasingly difficult to turn research findings into clinically useful and actionable insights. This dissertation proposes a set of computational tools for both predicting participants'...

Elucidating conformational changes in Syntaxin-1a on different stages of SNAREsassembly using Electron Paramagnetic Resonance

Vanessa Bijak
When an action potential arrives at the axon terminal, it causes a local increase in intracellular Ca2+ concentration that starts a cascade of molecular interactions leading to the fusion of synaptic vesicles with the plasma membrane. This process is called neuronal exocytosis and is mediated by SNARE proteins. SNAREs are a highly conserved group of proteins that interact to form a coiled-coil assembly called the SNARE complex. The assembly of this complex is believed to...

Parent-Child Shared Book Reading: Children's Learning of Natural Selection from a Digital Book

Shoronda Matthews
Research on shared parent-child book reading finds that it can provide support to children’s learning in the areas of language and literacy development (Chow et al., 2008; Lever & Sénéchal, 2011; Parish-Morris et al., 2013). Children show the capacity for science learning when reading with a researcher or teacher (Altun, 2019; Daubert et al., 2020; Ganea et al., 2011; Kelemen et al., 2014), but limited work has examined whether shared book reading experiences with parents...

Exploring the Role of Maternal Cognitions, Parenting Practices and Neighborhood Opportunities in Preschoolers' Development

Deiby Mayaris Cubides Mateus
The three papers that comprise this dissertation analyze paths through which family, neighborhood resources, and parenting interventions influence preschoolers’ development. Paper 1 examined the extent to which parenting practices and home environment changed between pre-kindergarten entry and kindergarten entry, and whether these aspects of parenting were related to children’s school readiness. Paper 2 explored whether neighborhood resources moderated the relationship between family cumulative risk and the growth trajectory of children’s executive function skills. Finally, paper...

The Development of Point-of-Care Microfluidic Devices for the Detection of Infectious Diseases

Scott Karas
Point-of-care (POC) diagnostics is a discipline focused on using instrumentation or analytical techniques to detect and identify target analytes at or near a patient in need of treatment, whereby the patient is properly diagnosed and provided the necessary medical care. In the past few years, there has been an increased focus on the development and implementation of POC devices to rapidly detect infectious diseases. Microfluidics has assisted in bridging the technology gap to produce inexpensive,...

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