Digital Commons Network^™

Parameter Estimation For Patient Enrollment In Clinical Trials, Junyan Liu

Undergraduate Honors Theses

In this paper, we study the Poisson-gamma model for recruitment time in clinical trials. We proved several properties of this model that match our intuitions from a reliability perspective, did simulations on this model, and used different optimization methods to estimate the parameters. Although the behaviors of the optimization methods were unfavorable and unstable, we identified certain conditions and provided potential explanations for this phenomenon and further insights into the Poisson-gamma model.

"My Daughter, Flee Temptation!" "O, Do Go, Dear Mother!": Gender, Race, And Body Politics In Charlotte Brontë’S Jane Eyre And Harriet Jacobs' Incidents In The Life Of A Slave Girl, Harper Mccall

Undergraduate Honors Theses

The following thesis explores the constructs of gender and race in relation to the bodies of Jane Eyre and Linda Brent in Jane Eyre by Charlotte Brontë and Harriet Jacobs. Particularly, 19th Century sociopolitical forces (e.g., British Imperialism, Antebellum American life, and the legacy of the Transatlantic Slave Trade) constrict the womens' bodies as they progress through the novels' plots. By using Frederick Douglass' "Narrative of the Life of Frederick Douglass, An American Slave," both intertextual references and resonant comparisons can be made between the oppression and resistance narratives characteristic of Jane Eyre and Incidents. Such communicative frameworks reveal larger …

Seeing What We Can't: Evaluating Implicit Biases In Deep Learning Satellite Imagery Models Trained For Poverty Prediction, Joseph O'Brien

Undergraduate Honors Theses

Previous studies have sought to use Convolutional Neural Networks for regional estimation of poverty levels. However, there is limited research into possible implicit biases in deep neural networks in the context of satellite imagery. In this work, we develop a deep learning model to predict the tertile of per-capita asset consumption, trained on satellite imagery and World Bank Living Standards Measurements Study data. Using satellite imagery collected via survey location data as inputs, we use transfer learning to train a VGG-16 Convolutional Neural Network to classify images based on per-capita consumption. The model achieves an $R^2$ of .74, using thousands …

To Have Sex Or Not To Have Sex: An Exploration Of Medieval Christian And Jewish Sexual Values, Rachel Zaslavsky

Undergraduate Honors Theses

This thesis is an exploration of Medieval Jewish and Christian conceptions of sex and aims to challenge the notion of Judeo-Christian values. Medieval Judaism and Christianity are at odds with each other in their understandings of sexuality. By considering Judaism, the belief that medieval religion was averse to sexuality and sexual pleasure is disproven. An analysis of religious works, such as those produced by Christian theologians and Jewish rabbis, yields the following conclusion: medieval Christianity restricted sex on the basis of abstinence, while medieval Judaism restricted sex on the basis of ritual impurity but mandated sex for procreation and female …

Sleep And Early Childhood Stressors In College Students: Examining Alcohol Use As A Moderator, Sylvain N. Chassagneux

Undergraduate Honors Theses

Early childhood stressors (ECS) consist of certain emotional, physical, or sexual experiences that may have long term consequences including sleep problems. Previous research has also found that alcohol use can negatively affect sleep; however, few studies have investigated alcohol use as a moderator of the relationship between sleep and other variables. In the current study, we examined whether the relationship between a general measure of ECS and sleep in college students may be moderated by alcohol use, a common psychoactive substance among this age group. Additionally, we examined this model with emotional abuse and neglect as a measure of ECS. …

Under The Blue Berets: Race And Ethnicity As Factors For Peacekeeping Success, Sam Ketchem

Undergraduate Honors Theses

Do race and ethnicity impact peacekeeping success? Scholars provide many arguments for why peacekeeping missions succeed or fail, but there has been little systematic study of how identity similarities or differences between peacekeepers and populations affect mission outcomes. I propose that racial and ethnic similarities or differences between the two groups are causal mechanisms that help determine whether a mission is on the road to operational success or failure. I use a mixed-method design to test these claims. First, I use a linear regression analysis to measure the impact of racial similarity between peacekeepers and populations on violence against civilians …

Exploring Moral Saints, Ruyu (Evelyn) Wang

Undergraduate Honors Theses

In “Saints and Heroes,” J. O. Urmson (1958) defines moral saints by reference to their supererogatory actions. He believes that saintly actions are praiseworthy but not obligatory. However, Andrew Flescher (2003) and Tom Dougherty (2017) argue that people have duties to improve themselves morally and to increase how much they sacrifice for others gradually. In this paper, I will propose an Aristotelian-inspired definition of “saint” and discuss the moral duties of saints and ordinary people (i.e., people who are not saints) based on Dougherty’s dynamic view of beneficence. I hold that ordinary people have prima facie duties to become saints, …

Black Hole Entropy In Ads/Cft And The Schwinger-Keldysh Formalism, Luke Mrini

Undergraduate Honors Theses

The Schwinger-Keldysh formalism for non-equilibrium field theory provides valuable tools for studying the black hole information loss paradox. In particular, there exists a Noether-like procedure to obtain the entropy density of a system by a discrete Kubo-Martin-Schwinger (KMS) variation of the action. Here, this Noether-like procedure is applied to the boundary action of an asymptotically anti-de Sitter (aAdS) black hole spacetime in maximally extended Kruskal coordinates. The result is the Kubo formula for shear viscosity, which is known in theories with an Einstein gravity dual to have a universal, constant ratio with the entropy density and is proportional to the …

The Effects Of Loss Of Orexin Neurons On Attention, Alejandra Eceizabarrena Sainz

Undergraduate Honors Theses

Attention is the ability to process stimuli in the environment and select relevant cues amongst distractors. It is a crucial aspect of the nervous system that engages multiple brain circuits. Neurons that release the neuropeptide orexin are implicated in attention. These neurons originate in the lateral hypothalamus and send projections widely throughout the brain. Evidence suggests orexins modulate attentional mechanisms through interactions with ascending neuromodulatory systems such as the basal forebrain. Experiments manipulating orexin receptors have found a subsequent effect on attention-demanding tasks, with infusions of orexin A enhancing attention in the presence of distractors. In contrast, the blockade of …

Sing Of Arms And Disobedience: Reading Vergil's Aeneid In Milton's Paradise Lost, Brooke Braden

Undergraduate Honors Theses

This thesis examines the extent to which Vergil’s Aeneid influences the characters, themes, and epic style of Milton’s Paradise Lost. Focusing primarily on the Carthage episode of the Aeneid in which Aeneas meets and falls in love with queen Dido, this thesis explores how the figures of Aeneas, Creusa, Dido, and Sychaeus parallel those of Milton’s Satan, Sin, Eve, and Adam, respectively. This thesis also shows how the appearance of epic themes such as fate in both texts affects characters’ personal motivations in similar ways, such as Dido’s suicide and Eve’s consumption of the infamous apple. Through an exploration of …

Materials Characterization For Microwave Atom Chip Development, Jordan Shields

Undergraduate Honors Theses

This thesis describes research to characterize materials to be implemented on a microwave atom trap chip, which will be able to trap and spatially manipulate atoms using the spin-specific microwave AC Zeeman effect. Potential applications of this research include atom-based interferometry and quantum computing.

Namely, this thesis describes the characterization of the following: (1) the dielectric constant of a well-characterized substrate, Rogers RO4350B, in order to provide proof-of-concept for a method that can be applied to the chip’s substrate, aluminum nitride (AlN), (2) the maximum current that will be able to be applied to the chip, and (3) surface roughness …

Examining Measures Of Eeg As Biomarkers For Autism Spectrum Disorder, Shuhan Liang

Undergraduate Honors Theses

A central aim of this study was to determine whether there are consistent differences in a variety of ERPs and/or resting state measures of EEG between children diagnosed with ASD and psychiatric controls. Additionally, we aimed to determine whether any of those differences would generalize to the neural correlates of continuous measures of autistic tendencies in the general population. We classified EEG data into three categories: basic sensory responses, cognitive/perceptual ERPs, and resting state measures. Our study indicated that basic sensory responses and cognitive/perceptual event-related potentials (ERPs) did not differentiate autistic individuals from controls. For resting-state measures, the high gamma …

A Satellite Imagery Approach To Estimating Migratory Flows In Guatemala Using Convolutional Neural Networks, Sarah Larimer

Undergraduate Honors Theses

Being able to predict migratory flows is important in ensuring political, social, and economic stability. In the wake of violence, unrest, natural disasters, and social pressures, millions of mi- grants have fled Central America in search of a better life. However, due to the infrequent nature and high cost of census data, there is a need for a more remote and up to date approaches. Con- volutional Neural Networks offer a computer vision based approach that is cheaper and with significantly less lag. In this study, we seek to evaluate the effectiveness of different convolu- tional neural networks in predicting …

Searching For Satan In The Pre-War Devil Blues, Kyle Mahoney

Undergraduate Honors Theses

While many scholars have aimed to address the devil as he appears in the lyrics of the blues, scholars have yet to directly address Satan as he appears in the blues. This paper aims to fill that gap in the existing literature, seeking answers to why "devil" appears so much more frequently than "Satan." In reviewing the singular pre-war blues song which does mention Satan by name, Robert Johnson's "Me and the Devil Blues," the ways in which "Satan" and "devil" are used in the lyrics of other forms of African American music like the spiritual, and the cultural contexts …

"Looks Like Cotton Candy": Deconstructing Fascism In Post-War Japanese And Italian Horror Cinema, Nicholas Hall

Undergraduate Honors Theses

The giallo films of Italy and the pink films of Japan are often written off as "B-film trash" by the public, journalists, critics, and even sometimes academics. Yet as "cliche" or "gratuitous" as these films tend to be, they are deeply engaged with the fascist pasts of the nations. This thesis argues that the rampant historical and cultural revisionism that plagued (and continues to plague) post-war Italy and Japan are responsible for this unprecedented boom in horror cinema. Furthermore, this thesis posits that the horror film is the most well-equipped cultural tool for deconstructing the fascist pasts of Italy and …

Pastries And Plots: Food Rhetoric And Gender Struggles In Shakespeare’S Plays, Juliet Nierle

Undergraduate Honors Theses

Food is a common motif across the Shakespearean cannon. From early plays to late plays, comedies to dramas, food appears in a variety of instances, functioning in numerous ways. Frequently representative of social class or serving as a cultural marker, food in Shakespeare can be innocent and passive, but it has the potential to contribute to scenes of violence. Foodstuffs in Shakespeare’s Taming of the Shrew, Titus Andronicus, and Coriolanus contribute to the brutal harms committed in the plays, specifically in scenes of violence against women. Characters use foodstuffs as pejorative metaphors, like the subjugation of Volumnia in the context …

Pion Detection For The Moller Parity-Violating Electron Scattering Experiment, Michael Tristan Hurst

Undergraduate Honors Theses

The MOLLER Experiment at Jefferson Lab intends to make a precise measurement of the weak charge of the electron through parity-violating electron scattering. To achieve the level of precision required for the experiment, background rates of events other than electron-electron scattering must be known. Working with data from Monte-Carlo simulations created using a GEANT4 simulation package, I show that the combined signal from two existing detector subsystems of the MOLLER experiment allow for particle identification between electron and pion events. I worked to optimize an additional ‘Pion Exit Scintillator’ which improves the ability to distinguish particle identity at the cost …

Peace Discourse In Postwar Japan: Emergence, Continuity, And Transformation, Xiuyu Li

Undergraduate Honors Theses

Postwar Japan has often been described as “pacifist.” This is because Japan has not engaged in a single major conflict since the end of WWII and because of the kind of peace thinking developed by its war-weary populations. While it was considered natural for humans to desire peace, this momentum was generated from the memory of Japanese people as both perpetrators and victims of war over the course of the country’s modernization. The Japanese intellectuals not only cherished the peaceful condition in the wake of WWII as a generous gift from the Allied powers but also dedicated themselves into rebuilding …

Cognitive Decline And Contact Sports: The Relationship Between P3 Amplitude And Sub-Concussive Head Impact, Elizabeth Kerman

Undergraduate Honors Theses

The present study sought to explore the effect of repetitive sub-concussive head impacts on the P3 event-related potential (ERP) amplitude and measures of movement kinematics. University students participating in collision, contact, and non-contact sports at the club and varsity level completed a cued visuomotor adaptation task. Results indicated that participants who estimated experiencing four or more sub-concussive head impacts per week display a significantly reduced P3 amplitude across both normal and adaptive trials. Additionally, participants who estimated experiencing less than four sub-concussive head impacts per week displayed no significant changes in P300 amplitude between “switch” and “stay” trials. This research …

Fecal Pellet Production By North Atlantic Zooplankton, Michael Gibson

Undergraduate Honors Theses

Fecal pellet carbon (FPC) production by zooplankton is a significant component of the ocean’s biological carbon pump: the suite of biological processes that mediate export of carbon to the deep ocean, ultimately leading to the sequestration of atmospheric carbon dioxide in the ocean. In this study, mesozooplankton (zooplankton 0.2 mm to ~2 cm) were collected from the epipelagic zone in the temperate North Atlantic Ocean during day and night in May 2021. Zooplankton were live separated into five size fractions and incubated on board ship in natural surface seawater to measure fecal pellet production rate of the mixed mesozooplankton community. …

The People Of Seljuq Baghdad, 1069-1089, Henry Stratakis-Allen

Undergraduate Honors Theses

In recent years, scholars of the Islamic Middle East have fiercely debated the nature and underlying causes of the so-called ‘Sunni Revival’, a period of Sunni political resurgence and theological consolidation centered around the city of Baghdad that lasted throughout the eleventh century. Despite the importance of this period, which witnessed the crystallization of mainstream Islamic thought as it is known to the present, scholars have been unable to synthesize its phenomena into a single convincing narrative. This shortcoming is owed largely to scholars lacking a robust structural understanding of Islamic society during this period, particularly with respect to Baghdad. …

A Study Of Reciprocal Underwater Motion And Its Use In Algae Harvesting, Marguerite Bright

Undergraduate Honors Theses

In 2009, many research groups at different companies and universities were funded by Statoil to study the use of algae as a potential biofuel. Combined with the Chesapeake Bay TMDL given by the EPA, a team at William & Mary and VIMS studied the growth and harvest of wild algae in the York River. This method also removed harmful nutrients such as nitrogen and phosphorus from the waterways. Other independent research projects stemmed from this. In 2014, a research team sought to commercialize and automate the IWAGS system, and found that a single oscillating blade was the most effective. This …

Fdi And Environmental Externalities In Southeast Asia, Kevin Bloodworth

Undergraduate Honors Theses

In this paper I explore the relationship between foreign direct investment (FDI) and deforestation in Cambodia. Through an event study framework, I show that economic land concessions have a negative relationship with tree cover, over time, having stronger and stronger negative effects. This relationship is more pronounced in foreign economic land concessions when compared to domestic economic land concessions. Through the use of a difference in differences research design I examine the relationship between foreign and domestic concessions through the implementation of a ELC concession ban. The ban only led to worsening levels of deforestation within the borders of foreign …

Rethinking ‘Feminicide’: The Role Of Organized Crime Groups In Increased Rates Of Feminicide In Mexico, Giselle Figueroa

Undergraduate Honors Theses

Why has feminicide significantly increased in Mexico over the past two decades? Previous feminicide research in Mexico has centered around the idea that the introduction of neoliberal politics changed family structures and increased the vulnerability of women as they entered the workforce. However, this explanation does not fully explain patterns of political violence against women in Mexico. I argue that Mexico’s War on Drugs and the intrinsic patriarchal ideologies and structures of organized crime groups (OCGs) reinforce gender hierarchies and increase the vulnerability of women. To evaluate my argument, I analyze state-level public government data on organized crime and feminicide …

The Cult Of The Nymphs: Identity, Ritual, And Womanhood In Ancient Greece, Ivana Genov

Undergraduate Honors Theses

Examining archeological and epigraphic evidence in its historical context, in this thesis I explore the Cult of the Nymphs venerated across ancient Greek poleis. I analyze the nymph’s profound cultural and historical impact that is often overlooked in the study of ancient Greece. Nymphs were female deities thought to embody ecological sites, such as fountains and springs, and became fundamental to polis identity. Their locations were often central to city plans, and their faces, depicted on coinage, became representative of the city itself. In the community, nymphs were integral to rituals for major life events, most often in the lives …

Development Of A 780 Nm External Cavity Diode Laser For Rubidium Spectroscopy, Catherine Sturner

Undergraduate Honors Theses

This thesis describes the work done to improve an external cavity diode laser. These improvements consisted of constructing an insulated housing to stabilize the temperature of the laser, tuning the proportional-integral-derivative feedback of the temperature controller, achieving resonance frequencies of rubidium, and implementing and optimizing feed-forward scanning of the frequency of the laser. The laser was then successfully used to measure the linewidth of another laser in the laboratory to better understand how that laser could be best used. The knowledge gained in this thesis can also be used to change the frequency of the laser to achieve other resonances …

Power Profiling Smart Home Devices, Kailai Cui

Undergraduate Honors Theses

In recent years, the growing market for smart home devices has raised concerns about user privacy and security. Previous works have utilized power auditing measures to infer activity of IoT devices to mitigate security and privacy threats.

In this thesis, we explore the potential of extracting information from the power consumption traces of smart home devices. We present a framework that collects smart home devices’ power traces with current sensors and preprocesses them for effective inference. We collect an extensive dataset of duration > 2h from 6 devices including smart speakers, smart camera and smart display. We perform different classification tasks …

Beyond A Partnership Ethic: Evolutions Of Ecofeminism In The Post-Apocalyptic Landscapes Of Margaret Atwood's Maddaddam Trilogy And Jean Hegland's Into The Forest, Catherine Lashley

Undergraduate Honors Theses

In this paper, I analyze two contemporary post-apocalyptic novels, Jean Hegland’s novel Into the Forest and Margaret Atwood’s MaddAddam trilogy, through an ecofeminist lens to argue that they establish a framework for an existence that decenters the human and rejects Eurocentric, masculinized conceptions of individualism. I put these novels in conversation with Eduardo Kohn’s book How Forests Think: Toward an Anthropology Beyond the Human, and the ecofeminist works of Carolyn Merchant, Donna Haraway, and Val Plumwood. My paper is split into three sections, Women/Nature, Human/Nonhuman, and Individual/Collective. I use the slash as a glyph to denote moments of non-dualism, unquantifiable …

Kfactorvae: Self-Supervised Regularization For Better A.I. Disentanglement, Joseph S. Lee

Undergraduate Honors Theses

Obtaining disentangled representations is a goal sought after to make A.I. models more interpretable. Studies have proven the impossibility of obtaining these kinds of representations with just unsupervised learning, or in other words, without strong inductive biases. One strong inductive bias is a regularization term that encourages the invariance of factors of variations across an image and a carefully selected augmentation. In this thesis, we build upon the existing Variational Autoencoder (VAE)-based disentanglement literature by utilizing the aforementioned inductive bias. We evaluate our method on the dSprites dataset, a well-known benchmark, and demonstrate its ability to achieve comparable or higher …

Bad Asians: How Heritage Language Ability And Perception Affects Korean And Chinese College Students’ Identity, Grace Liscomb

Undergraduate Honors Theses

I explore east Asian-Americans’ negotiation of identity through the attitudes they take towards their respective abilities to speak their heritage languages (HL). In this project, heritage language refers to a minority language that children learn at home, typically from parents and family members. Ideologically, I call upon He’s (2006) notion that identity is negotiated through speech. I utilize Corbin and Strauss’ (1990) grounded theory as a method of open analysis. The data I analyze is from 8 sociolinguistic interviews with 3 Korean-Americans and 5 Chinese-Americans. The first round of open coding has revealed a larger theme: in support of the …