Digital Commons Network^™

Nanodiscs: A Novel Approach To The Study Of The Methionine Abc Transporter System, Michael T. Winslow

Master's Theses

Membrane transporter proteins play the vital role of moving compounds in and out of the cell and are essential for all living organisms. ATP Binding Cassette (ABC) family transporters function both as importers and exporters in prokaryotes. MetNI is an E. coli Type I ABC transporter responsible for the uptake of methionine into the cytosol from the cell periplasmic space through the cell membrane to maintain intracellular methionine pools. ABC transporters, like other membrane proteins, are most often mechanistically and structurally studied in vitro, solubilized by detergents. However, detergent micelles may affect the conformational changes of membrane proteins relative to …

Synchrotron Photoionization Study Of Two Reactions, Alpha Angelica Lactone And Propargyl Alcohol Oxidation Initiated By O(3p) Atoms, Golbon Rezaei

Master's Theses

This work describes the oxidation behavior of biofuels, Alpha Angelica Lactone, and Propargyl Alcohol through combustion experiments conducted at the chemical Dynamics Beamline 9.0.2 of the Advanced Light Source (ALS) situated at the Lawrence Berkeley National Laboratories (LBNL) in Berkeley, CA. The combustion process of these two biofuels was initiated by O(3P), and they were analyzed using a multiplexed chemical kinetics photoionization mass spectrometer with tunable synchrotron radiation. The primary products of these two reactions were identified by kinetic time traces and characterized using the photoionization spectra.

The initial chapter of this work describes the importance of using biofuels instead …

Mate Choice And Sexual Conflict In A Livebearing Fish, Julia C. Kasper

Master's Theses

Eavesdropping occurs when a receiver extracts information from an interaction without directly engaging with the signaler. Eavesdropping has been shown to be an effective way of evaluating the quality of potential mates and their abilities in male-male competition, without having to directly interact with them, thereby reducing energy costs and mating harassment. Girardinus metallicus is a livebearing poeciliid fish endemic to Cuba whose mating system is dominated by mating harassment in the form of sneak copulations, persistent displaying, and male-male aggression. G. metallicus has a male specific polymorphism in both melanin coloration and behavior. Males with melanin coloration are known …

Annotation Of Non-Model Species’ Genomes, Taiya Jarva

Master's Theses

The innovations in high throughput sequencing technologies in recent decades has allowed unprecedented examination and characterization of the genetic make-up of both model and non-model species, which has led to a surge in the use of genomics in fields which were previously considered unfeasible. These advances have greatly expanded the realm of possibilities in the fields of ecology and conservation. It is now possible to the identification of large cohorts of genetic markers, including single nucleotide polymorphisms (SNPs) and larger structural variants, as well as signatures of selection and local adaptation. Markers can be used to identify species, define population …

Climate & Conflict: View Into A Warming World, Faelynn Carroll

Master's Theses

Unlike weather patterns, the El Niño Southern Oscillation (ENSO) is a large-scale, cyclical climate system that is now predictable for up to a year and a half in advance. ENSO cycles occur every two to seven years for approximately two years at a time, affecting large swaths of the globe with plausibly random variation in the exact location and strength of local effects. However, its systemic nature allows for aggregate effects to be accounted for by its outcomes. This research uses novel 0.5 x 0.5 degree ENSO teleconnection analysis for precipitation and temperature to uncover environmental mechanisms that underly the …

Static Vascular Modeling Of Diabetes Progression, Andrea Skattenborg

Master's Theses

Cardiovascular disease is the leading cause of mortality in diabetic patients, and diabetes is one of the main causes of cardiovascular disease. Risk factors for cardiovascular disease result in structural and functional changes in the vascular wall. Arterial stiffness is a prominent structural change observed in the arterial wall that can be measured in clinical settings. The purpose of this thesis was to create a static model of the changes in arterial stiffness seen in diabetes. Elastic tubes with varying wall thicknesses were used to create artificial arteries for this purpose. Compliance (inverse of stiffness) of the arteries was determined …

Evaluating The Field Efficacy Of Uv-C On Two California Strawberry Arthropod Pests, Jose Luis Alvarado Rojas

Master's Theses

The efficacy of two different autonomous Ultraviolet-C (UV-C) units on two spotted spidermite, Tetranychus urticae Koch (Acari: Tetranychidae), and greenhouse whitefly, Trialeurodes vaporariorum. (Hemiptera: Aleyrodidae). was tested in four commercial strawberry fields in California.

In 2020, California strawberry growers used 12 million pounds of active ingredients (AIs) to keep pests under economic thresholds. While pesticides are an important part of an integrated pest management program, their use poses threats to the environment and human health. To protect agricultural workers, the public and the environment, regulators in California have consistently limited or removed the use of certain pesticide AIs. For …

Statistical Uncertainty Of The Ignition Time, Burning Rate, And Extinction Characteristics Of Engineered Timber Products, Jacob David

Master's Theses

The characterization of flammability parameters such as time to ignition, mass loss rate (MLR), and extinction criteria is critical for understanding ignition and burning behavior of timber products. These parameters, often determined with bench scale experiments, have previously been presented in literature. However, standard test methods generally use relatively low trial quantities (e.g., n=3) which can potentially cause large variation in reported values. This study investigates the influence of trial quantity on observed statistical variation in key flammability metrics for timber products (e.g., ignition time, peak MLR, MLR at extinction). Using a conical heater, 100 repeat trials were conducted …

The Women Of Justice: Narratives Of Women Attorneys In California During The 1960s And 1990s, Sarah Zion

Master's Theses

This thesis interviews two women attorneys who have not previously shared their stories to relate their experience of going to law school and entering the field after graduation. The study of women lawyers and their stories is not a new topic, however, there is a focus in the scholarship to only explore the tales of the women who reached the big firsts, such as first female lawyer or first female judge. By providing interviews of women who have not reached these big accomplishments, the field gains a more rounded understanding of the history of female lawyers. The two women interviewed …

Mobile Firewall System For Distributed Denial Of Service Defense In Internet Of Things Networks, Lorenzo B. Gardea

Master's Theses

Internet of Things (IoT) has seen unprecedented growth in the consumer space over the past ten years. The majority of IoT device manufacturers do not, however, build their products with cybersecurity in mind. The goal of the mobile firewall system is to move mitigation of network-diffused attacks closer to their source. Attack detection and mitigation is enforced using a machine that physically traverses the area. This machine uses a suite of security tools to protect the network. Our system provides advantages over current network attack mitigation techniques. Mobile firewalls can be deployed when there is no access to the network …

A Minor Place: A Short Story Collection, Nathaniel Pyle

Master's Theses

In this collection, characters often face interior struggles such as past lives, abusive upbringings, dead partners, and relationship struggles. A Minor Place concerns loneliness and existentialism set with a melancholy, southern gothic setting. Characters toil with their psychological state within a shared and collective universe of the unknown. The characters found within A Minor Place deal with sensitive issues such as loss, isolation, and overcoming their difficulties. A Minor Place implements narratives to showcase a "minor” tonality and coloration and style to accompany this titular minor place.

Identification Of Spring And Fall Spawned Eggs And The Genetic Distinction Of Gulf Sturgeon In The Choctawhatchee River, Alabama-Florida, Nicholas Lamey

Master's Theses

The Gulf Sturgeon (GS; Acipenser oxyrinchus desotoi) is a threatened subspecies of Atlantic Sturgeon (Acipenser oxyrinchus oxyrinchus) which inhabits the Gulf Coast of the United States. Prior studies of Eurasian sturgeon species and Atlantic Sturgeon have revealed the existence of a dual spawning strategy (i.e. spring and fall). The presence of a fall spawn has also been proposed for GS, but only with the support of circumstantial evidence. This study used molecular techniques to investigate seasonality of GS spawning and the possibility that this has produced unique genetic groups in the Choctawhatchee River. Mitochondrial DNA from suspected …

Suppression Of National Identities: Ukrainian And Baltic Cultures In The Soviet Union, Jonathan H. Mastman

Master's Theses

This thesis defines the formation and consummation of Soviet Bolshevism as another imperialist force rather than its stated objective of freeing the people of the United Soviet Socialist Republics from the clutches of an inequitable elite. Through the policies and objectives of the Soviet government the workers and citizens of Ukraine and the Baltic republics were not liberated or given autonomy over their lives and labor, as Marxist-Leninism would have them believe. I review the Russification efforts found first in the Tsarist Russian Empire and then continued by Soviets in the nature of pursuing or denying cultural, political, and economic …

Development Of Wiskott-Aldrich Syndrome Knock Out Protocol For Drug Substance Assay Development, Julia C. Hanna

Master's Theses

Wiskott-Aldrich Syndrome (WAS) is a rare X-linked primary immunodeficiency affecting approximately 1 in 100,000 live XY births in North America and is caused by a mutation to the WAS gene which is expressed across hematopoietic lineages. The WAS protein (WASp) plays a role in regulating actin polymerization. On a cellular level, there are a variety of effects of a lack of WASp or expression of a dysfunctional WASp protein for patients including issues with migration, adhesion, chemotactic response, phagocytosis, activation, and proliferation across different cell types in addition to reduced platelet size and output. This can lead to several systematic …

Deep Learning Recommendations For The Acl2 Interactive Theorem Prover, Robert K. Thompson, Robert K. Thompson

Master's Theses

Due to the difficulty of obtaining formal proofs, there is increasing interest in partially or completely automating proof search in interactive theorem provers. Despite being a theorem prover with an active community and plentiful corpus of 170,000+ theorems, no deep learning system currently exists to help automate theorem proving in ACL2. We have developed a machine learning system that generates recommendations to automatically complete proofs. We show that our system benefits from the copy mechanism introduced in the context of program repair. We make our system directly accessible from within ACL2 and use this interface to evaluate our system in …

Groups Of Non Positive Curvature And The Word Problem, Zoe Nepsa

Master's Theses

Given a group $\Gamma$ with presentation $\relgroup{\scr{\scr{A}}}{\scr{R}}$, a natural question, known as the word problem, is how does one decide whether or not two words in the free group, $F(\scr{\scr{A}})$, represent the same element in $\Gamma$. In this thesis, we study certain aspects of geometric group theory, especially ideas published by Gromov in the late 1980's. We show there exists a quasi-isometry between the group equipped with the word metric, and the space it acts on. Then, we develop the notion of a CAT(0) space and study groups which act properly and cocompactly by isometries on these spaces, such groups …

Adaptive Fascism: A Study Of Far-Right Politics In The Americas, Blake Mustachio

Master's Theses

Populism as a term is too ambiguous to describe the surge in far-right nationalistic leaders both during the Cold War and the present day. This paper proposes to solve this quagmire by proposing the term adaptive fascism. Adaptive fascism is the idea that far- right leaders using tactics that have legacies within fascist rhetoric have adapted the fascist rhetoric to fit more within the geopolitical situations of each leader’s respective time period. Looking at both leaders of the Cold War, including Jorge Videla of Argentina and Augusto Pinochet of Chile. As well as modern day leaders, Donald Trump of the …

Reconstructing Identity: Carlton Burgan, Patient Zero In The Development Of Plastic Surgery, Civil War Through World War I, Teresa M. George

Master's Theses

Plastic surgery has played an integral role in helping people achieve societal expectations of appropriate physical appearance since its inception. Through the story of Carlton Burgan, a Union soldier during the American Civil War, who suffered severe facial trauma by mercury poisoning, this thesis hopes to reconstruct the conversation around plastic surgery’s origins as it is influenced by societal standards of the day. Specifically, this thesis argues that the seminal moments leading to plastic surgery being seen as a worthwhile medical specialty was during the Civil War, not World War I as so many scholars have put forth. Violent acts …

Agricultural Shocks On Household Stability: A Case Study Of Tanzania Maize Farmers, Zimmi Silonda Ndlovu

Master's Theses

As the global populations grow, the need for stronger agricultural resilience in areas with high food insecurity like Sub-Saharan Africa (SSA) is a must. Crop failure due to climate related events has increased substantially over the past decade, raising the risks to vulnerable groups like subsistence farmers. Understanding the effects of climate variability on farmers and their crops is a pivotal step towards increasing resilience and productivity. In this paper I approach this question using a Linear Probability Fixed-effects Model on Tanzanian Panel Survey data with monthly temperature and precipitation for years 2008 to 2013. Results suggest a negative relationship …

Impact Of Long-Term Trauma Exposure On Competitiveness And Generosity, Anchal Khandelwal

Master's Theses

: Although half of all nations in the world have experienced armed conflict in the last 50 years, there is still a glaring lack of evidence on the persistent human costs of these conflicts. We exploit the quasi-random variation in abduction (Blattman and Annan 2009) and establish a control (neighboring) sub-county based on the intensity of exposure by the Lord’s Resistance Army in Northern Uganda to investigate the long-term impact of trauma exposure on competitiveness and generosity. We do this by conducting lab-in-field experiments on a sample of adult North Ugandan women and find that trauma exposure reduces competitiveness in …

'Formation In Distinctive Dimensions Of Our Way Of Proceeding': Preparation Of Lay Directors Of Works In Jesuit Schools, Perry T. Petrich Sj

Master's Theses

The purpose of the study was to determine how lay directors of works in Jesuits West secondary schools can be formed to best serve as faith leaders. The study consisted of secondary research in which interview data and surveys from studies on lay formation in Jesuit universities and lay leadership of Bay Area Catholic High Schools were used to determine whether or not formation of lay directors of works in faith leadership is possible, what the objectives of that training should be, and how that training can be offered. This analysis determined that lay formation is both possible and necessary. …

Between Life And Death: Reimagining Black Reproductive Healthcare, Briana Britton

Master's Theses

The state of Black reproductive health is in crisis with mortality rates of birthing people in the U.S. being the worst in the developed world. What compounds this issue is historical and cultural evidence of unethical and inhumane treatment of Black people – Black birthing people in particular – by the U.S. healthcare system primarily due to racism and sexism. Those who do not identify with the binary and heteronormative structures of our healthcare system are at further risk of discrimination and health disparities. Due to social and cultural ideals, stigma, and other structural forces, Black, Black birthing and Black …

Charity Begins At Home: Investigating How Culture Shapes In-Group Bias In Altruistic Behavior, Angira Shukla

Master's Theses

The paper builds a structural model of altruistic transfers based on identity matches with another individual and estimates the weights that people place on the characteristic matches. We also take a comparative look at the role of culture in these transfers. The culture here is trying to contrast a traditional society versus a cosmopolitan one. I run an experiment in India to examine these differences. I find that in both the urban and rural samples individuals tend to give more to girls and donate largely on the basis of the need of the receiver. I also find that the rural …

Political Economy Of General Normative Force In The Paris Agreement, Jonah B. Jellesed

Master's Theses

The Paris Agreement revolutionizes international cooperation in addressing the urgent threat of climate change. However, its status as an emerging system of global climate governance remains largely unexplored. Drawing on HLA Hart's legal theory, we apply a straightforward test to determine its significance, revealing the Paris Agreement as evidence of a new international legal order. This has far-reaching implications, particularly in the realm of political economy. Unlike previous analyses that merely consider whether a state is a signatory to the agreement or not, our innovative approach delves deeper into countries' commitment. Our analysis shows high compliance levels among populations in …

The Labor And Educational Effects Of Daca: Evidence From California, Oscar A. Alonso Guerra

Master's Theses

The Deferred Action for Childhood Arrivals (DACA) program, implemented in 2012, has been a subject of intense debate. While much research has examined the early effects of DACA, this study contributes to the literature by analyzing more recent data on the labor and educational outcomes of DACA recipients in California. Using a difference-in-differences approach, I aim to uncover significant changes in the labor market and educational outcomes of DACA recipients over time. I find those eligible for DACA experienced noteworthy effects compared to those who were ineligible. Specifically, they exhibit a significant 3.1 percentage point increase in the likelihood of …

Silent Weapon: A Documentary On Ending Police Corruption In Nigeria With A Nonviolent Social Movement, Damilola Adesanya

Master's Theses

This documentary aims to examine the issue of police corruption in Nigeria and see how a nonviolent movement can be implemented to end this problem. The focus is on nonviolent movements like the #ENDSARS was used to bring change where there seemed to be no hope. There have been many accounts of the experiences of the citizens of Nigeria when it comes to police corruption. Unfortunately, a lot of these situations have gone untold. Some Nigerians believe there is no way to stop the police from being corrupt, as it has been going on for too long. Many citizens feel …

The Grid That Binds: The Renewable Energy Transition In Germany, France, And Italy, Katherine A. Mason

Master's Theses

The current energy crisis and climate change are just some of the challenges that the European Union and its member states are forced to reckon with. The loss of fossil fuel supplies from Russia in the wake of the invasion of Ukraine forced the acceleration of the renewable energy transition and created a new set of problems to be addressed, namely the effectiveness of climate work that had already begun, and what the roadmap for the future would look like. Examining the history and infrastructure of Germany, France, and Italy presents insights into how this challenge can be met, and …

Liberté, Égalité, Identité: Media And The Construction Of French National Identity, Hannah D. Lahey

Master's Theses

In 2015, France was rocked by a series of terror attacks that seemed to act as a tipping point for the fears and tensions that had been brewing in Europe in the months leading up to the strike. These attacks, and the subsequent responses to them, point to the influence of a much longer history of French involvement in the Middle East, and the lasting impact that colonization has on French national identity formation. With the creation of French national identity, and therefore the creation of the group that is deemed necessarily outside of this identity, the moral values and …

Charcoal, Droughts, And Deforestation: Evidence From Mozambique, Kaitlin N. Paull

Master's Theses

Mozambique is prone to harsh weather conditions due to its geographic location, and these conditions are expected to worsen in the face of ongoing climate change. Many of Mozambique’s farmers rely on rain-fed agriculture, meaning their livelihoods are highly vulnerable to worsening weather trends. Some farmers have diversified their incomes with charcoal production, making use of Mozambique’s abundant forest resources. This study measures how reliance on charcoal as an income diversification strategy affects forest loss, and found inconclusive effects of rainfall on deforestation. However, the study does find that a one-unit increase in hot degree days increases the probability of …

Ties That Bind: Allomaternal Care And Cooperation Among Matrilocal And Patrilocal Northeast Indian Tribes, Shreeja Guha

Master's Theses

Why do humans cooperate? Given the extensive range of literature from various disciplines on the puzzle of human cooperation, there is no one answer to that question. In this paper, I look at whether childcare provided by individuals other than the genetic mother, i.e. allomaternal care, can be one possible explanation for the evolution of human cooperation, especially in small communities with no formal childcare. The data for this study comes from field experiments & surveys conducted with a sample of 416 mothers and fathers from matrilocal and patrilocal tribes in North-east India. I present evidence that allomaternal care plays …