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Evaluating The Latent Variable Structure Of Episodic Long-Term Memory Abilities, Kyle Featherston

Arts & Sciences Electronic Theses and Dissertations

I investigated how recall and recognition differ depending on the nature of the memory items and what one is asked to remember about them. Participants were asked to remember lists of various types of verbal items, including words, nonwords, common first names, and the names of common objects in pictures that they viewed, or to remember the contextual information that accompanied those items, including their size, location, color, or font. Immediately following presentation of each list, free recall or recognition tests for items or context were administered. It has been proposed that memory for context, or source memory, differs from …

Regularized Fourier Ptychographic Microscopy, Shiqi Xu

McKelvey School of Engineering Theses & Dissertations

Quantitative phase image (QPI) is a popular microscopy technique for studying cell morphology. Recently, Fourier ptychographic microscopy (FPM) has emerged as a low-cost computational microscopy technique for forming high-resolution wide-field QPI images by taking multiple images from different illumination angles. However, the applicability of FPM to dynamic imaging is limited by its high data requirement. In this thesis, we propose new methods for highly compressive FPM imaging using a data-adaptive sparse coding and an online plug-and-play (PnP) method with non-local priors based on the fast iterative shrinkage/threshold algorithm (FISTA). We validate the proposed method on both simulated and experimental data …

In A Child's Place: Centering Black Girlhood In Black Feminisms Through The Bildungsroman, Taylor L. Bailey

Senior Honors Papers / Undergraduate Theses

This thesis examines the effects of misogynoir— a specific form of oppression Black women experience due to the intersection of being deemed inferior in both race and gender— on the development of Black girlhood. In Black feminist theory and criticism, though, the language used often subordinates Black girls and does not ascribe adequate import to their experiences. Using the Black girl bildungsroman, specifically The Bluest Eye by Toni Morrison and Another Brooklyn by Jacqueline Woodson, as a way to survey the effects of misogynoir and the significance of homosocial, intraracial bonding, I argue that Black feminisms should center Black girlhood …

Numerical Simulations Of Flow Past A Triangular Airfoil And In A Sweeping Jet Actuator Using Different Turbulence Models, Han Yang

McKelvey School of Engineering Theses & Dissertations

The goal of this research is to perform 2D turbulent flow simulations to predict the flow past a triangular airfoil used for a Mars air vehicle and in a sweeping jet actuator used for active flow control. Simulations are performed using the commercial CFD software ANSYS Fluent.

The thesis consists of two parts. The first part of the thesis deals with the CFD simulations of a triangular airfoil in low-Reynolds-number compressible flow. This airfoil is one of the candidates for propeller blades on a possible future Martian air vehicle design. The aerodynamics and flow physics of the triangular airfoil is …

Norepinephrine Induces Macrophage Polarization Critical To Eliciting Renal Fibrogenesis, Hannah Manoj

Undergraduate Research Symposium Posters

Renal denervation before ischemic injury has been shown to protect against fibrogenesis and the inflammatory response, which are two causes for the progression of chronic kidney disease. However, the administration of norepinephrine (NE) to denervated renal systems induced fibrogenesis and inflammation after ischemic injury. Our previous data indicates that NE-mediated stimulation of the α2-AR receptors is responsible for regulating several of the processes implicated in fibrogenesis and inflammation, including the accumulation, migration, and infiltration of macrophages to the site of injury; this is especially relevant as macrophages have been implicated as one potential cause for the inflammatory response.

Recent studies, …

Authoritarian Parenting Predicts Callous-Unemotional Behaviors In Preschoolers, Ara Nazmiyal, Alli Hollender

Undergraduate Research Symposium Posters

Callous-unemotional behaviors, such as lack of empathy and guilt, are critical in understanding the development of certain mental pathologies. Studies have found that these traits are risk factors for disorders such as sociopathy and psychopathy. Virtually no studies have examined callous behaviors in the preschool period. The purpose of this study was to examine parenting characteristics that predict preschoolers’ greater callous-unemotional behaviors. This study examined data from the PCIT-ED study, a randomized control trial (RCT) of a novel treatment for depression for children aged 3.11-6.11 years old (N = 240). Callous behaviors were assessed by previously validated measures such …

Symbiotic Bacteria Can Colonize Closely-Related, But Not Distantly-Related Species Of Its Host Dictyostelium Discoideum, Rory Vu Mather

Undergraduate Research Symposium Posters

Some of the closest interactions between organisms can be found within symbioses, where different individuals live in close physiological contact and either benefit or harm the other. A powerful kind of benefit comes when bacterial symbionts produce amino acids or provide digestive capabilities outside the host’s ability, in essence taking advantage of the other’s genetic catalog. One such symbiosis is that of the social amoeba Dictyostelium discoideum and its bacterial symbionts Burkholderia agricolaris, Burkholderia hayleyella, and Burkholderia bonneia. In this symbiosis, Burkholderia provide the capability of carrying food bacteria to their host, an advantageous trait when bacterial food is rare. …