Digital Commons Network^™

Mosquito Communities And Insect-Specific Viruses In A Heterogenous, Urban Landscape In Puerto Rico, Nicole Scavo

Master's Theses

The goal of my thesis was to investigate the relationships between mosquito diversity, Aedes aegptyi populations, and socioeconomic factors (SEF) in an urban setting and to characterize the virome of Ae. aegypti in San Juan, Puerto Rico. Mosquitoes were collected in three periods during late 2018 and early 2019 and were identified to the species level. Socioeconomic factors were measured using foot surveys and U.S. Census data. Some Ae. aegypti females were processed for sequencing and sent to Quick Biology for RNA sequencing to identify viruses. Results showed a link between SEF and Ae. aegypti abundance as well as between …

Cruise Ship Ports And Human Capital Development: The Case Of Mexico, Jorge Herrera

Master's Theses

The cruise ship industry, the fastest-growing segment in the leisure travel market, has contributed significantly to the economic transformation of developing countries, particularly in the Caribbean Basin. This paper applies a difference-in-differences methodology to examine the causal impact of the introduction of cruise ship ports on human capital development in Mexico, as reflected by educational attainment. Using variations in school enrollment, segregated by gender and age across states and municipalities, I find that the economic consequences derived from this form of tourism do not translate into incremental, permanent improvements in all quality of life indicators considered, most saliently in schooling. …

Evaluating Methods To Reduce Humpback Whale (Megaptera Novaeamgliae) Ship Strike Mortality In Nearshore Feeding Habitats Within The San Francisco Bay, Alisa Keenan

Master's Theses

Across our world’s oceans, whales are perpetually stuck and killed by large ships. Sea-based commercial trade is increasing on a global scale; therefore, more large ships are circumnavigating through biologically important whale habitats. This is of grave concern to marine resource managers, especially in the United States where major shipping corridors overlap critical whale habitat. It is feared that in these areas with high whale density, ship strikes are reducing populations of whales to levels below what is sustainable for threatened and endangered species, thereby hindering the recovery of depleted whale populations. Humpback whales, a species that is federally-listed as …

Characterizing Erad And Antioxidant Response In Ixodes Scapularis Ise6 Cells During Borrelia Infection, Latoyia Downs

Master's Theses

Ticks are hematophagous ectoparasites that transmit a multitude of diseases to humans. Borrelia burgdorferi (BB) and Borrelia miyamotoi (BM) are both tick-borne pathogens that cause disease in humans and are transmitted by the black-legged tick (Ixodes scapularis). A byproduct of blood digestion generates reactive oxygen species that are toxic and cause oxidative stress which promotes cellular damage and dysfunction. The endoplasmic reticulum (ER) is especially affected by oxidative stress, resulting in a buildup of improperly folded proteins in the ER lumen called ER stress. To prevent cellular damage, the tick utilizes an antioxidant system to neutralize ROS and mechanisms …

Historical And Contemporary Variables Affecting The Range And Distribution Of Aedes Aegypti, The Yellow Fever Mosquito, In The United States, Nicole Mackey

Master's Theses

Aedes aegypti, the primary mosquito vector of the yellow fever virus, threatens global health by passing on this virus, as well as chikungunya, dengue, and Zika viruses. Through its natural tendency to live in highly urban areas and bite human hosts; understanding the factors that affect the historical and current range of the pest is invaluable (Gubler, 1998). Although these viruses are not normally found in the United States, lack of vaccinations and wide-spread presence of the mosquito could lead to these diseases being reintroduced with potentially devastating effects (Monath, 2001). To determine a partial historical range of A. aegypti …

Malaria Risk On Ancient Roman Roads: A Study And Application To Assessing Travel Decisions In Asia Minor By The Apostle Paul, Daniel C. Browning Jr

Master's Theses

This study models malaria risks for travelers on ancient Roman roads with the goal of providing a tool for historical assessment of travel accounts from antiquity. The project includes: identification of malaria risk factors and associated spatial datasets, malaria risk model construction, verification and validation against available pre-eradication data, overlay of ancient Roman road data, and an initial case-study application to the journeys of the Apostle Paul, as narrated in the New Testament book, Acts of the Apostles (Acts). The project is intentionally cross-disciplinary in bringing the technical capabilities of GIS to the task of evaluating nuanced textual sources for …

The Unknown War: Army Of The Republic Of Vietnam Combat Operations 1962-1963, Justin Major

Master's Theses

The American historiography of the Vietnam War has tended to focus on the actions of the United States Armed Forces, the People’s Army of Vietnam, and the Viet Cong, while the history of the Army of the Republic of Vietnam (ARVN) has remained largely untold. ARVN, when mentioned, is usually portrayed as incompetent, ineffective, and even cowardly. Recently, historians like Andrew Wiest and Mark Moyar have challenged this view of ARVN that was originally advanced by journalists Neil Sheehan and David Halberstam. Moyar even suggested that ARVN was winning the war until the assassination of South Vietnamese President Ngo Dinh …

Barriers To Health: Understanding The Barriers Faced By Community Intervention Projects, Vera Landrum

Master's Theses

Health disparities affect significant portions of the population and are most often experienced by marginalized communities (Wilkin, 2013). Health disparities are also impacted by geographical location, and hunger often affects rural areas (Dutta, Anaele, & Jones, 2013; Rural Health Information Hub, 2017). This study aims to understand how nonprofit organizations focused on addressing food insecurity disseminate information to members of the local community and how the input of community members impacted the overall food insecurity campaign. This study was conducted by interviewing five nonprofit directors and conducting three focus groups with clients of the. aforementioned organizations. The author found that …

Willingness To Seek Professional Help For Suicidal Thoughts: The Role Of Masculine Norms And Self-Stigma In Service Members, Samantha E. Daruwala

Master's Theses

Given the high rate of suicide, it is important to understand what barriers are preventing service members from seeking professional help for suicidal thoughts. Self-stigma and conformity to masculine norms, which are evident in the military culture, have been demonstrated as barriers to care in civilians. This study sought to better understand how these two factors are related to willingness to seek professional help for suicidal thoughts and a personal-emotional problem among service members. Specifically, we (1) identified service members’ willingness to seek help from a variety of sources for suicidal thoughts and a personal-emotional problem, (2) examined how conformity …

Sustainable Wastewater Treatment In The American South, Caroline Miles

Master's Theses

Aging infrastructure and changing social and environmental conditions are two factors that are currently pushing wastewater treatment towards more sustainable methods. This thesis investigates what sustainable treatment technologies are being used in the American South through a focused sample of six cities across the region: Austin, Texas; Fayetteville, Arkansas; Hattiesburg, Mississippi; Memphis, Tennessee; Ocean Springs, Mississippi; and Tuscaloosa, Alabama. The study assesses the types of sustainable treatment technology utilized at each facility, the perspectives of wastewater professionals about the technology, and the economic and environmental sustainability of each facility. Data was collected through direct observations on tours of the facilities, …

Helmand: The U.S. Marines And Counterinsurgency In Afghanistan, 2010-2012, Taylor L. Lewis

Master's Theses

In the years following the terrorist attacks of September 11, 2001, American troops contended with insurgent forces resistant to conventional tactics. General David Petraeus, along with other military experts, addressed the need for new strategies with the publication of Warfighting Publication 3-33.5 (3-33.5) in 2006. The manual laid out methods by which American troops should quell insurgent threats in Iraq and Afghanistan. This thesis is concerned with how the Marine Corps enacted the policies of 3-33.5 in Helmand Province between 2010 and 2012.

The tenants of this new manual were tested in the years following President Barak Obama’s commitment of …

An Assessment Of The Use Of Photogrammetry In Cranial Metric And Non-Metric Studies, Amy Hair

Master's Theses

Methods in biological anthropology have made tremendous leaps in recent years and with the increasing rise in technology there is no reason to suspect that this trend will be decreasing. Particularly methods in 3D digitization have not only increased but have also become more accessible in bioarchaeology. One method, photogrammetry, offers bioarcheologists a unique opportunity to easily collect and process cranial metric and non-metric data that can be used to quantify biological relatedness. While these advances are expected to continue, it is ignorant to assume that they represent a fail proof solution. A critical examination is necessary to quantify the …

The Effects Of Optimism On Anti-Natalism, Faith L. Brown

Master's Theses

People sometimes hold opinions on others’ choices, particularly their reproductive decisions, as these choices are important decisions that impact the lives of multiple people. People can believe that everyone should have children (pro-natalism) or that everyone should refrain from having children (anti-natalism) or they can hold no position on the reproduction of others. The main justification for anti-natalism is that life contains more suffering than pleasure and that it would be better if new people were not born to experience this suffering. This is why some theorists argue that people reject anti-natalism irrespective of how bad …

Educational Equity And Informal Stem Field Trip Programming, Sal Alper

Master's Theses

Informal STEM field trip programming is a large, yet under-researched area of the education landscape. Informal STEM education providers are often serving a more privileged section of society, leading to a risk of perpetuating inequalities seen throughout the education landscape. In an attempt to address the lack of research, this thesis explores the relationship between educational equity and informal STEM field trips. The intention was to collect data using a critical ethnography approach to the methods of qualitative questionnaire and interviews of informal STEM educators. A change in circumstances from the global pandemic of COVID-19 caused a shift in this …

Custodians Of Memory: A History Of American Archival Science With Suggestions For Future Digital Preservation Efforts, Courtney Thompson

Master's Theses

The archive and the historian are symbiotically dependent on one another. The archive relies on the historian to make use of the records it houses, and the historian looks to the archive to reconstruct history. But can a historian responsibly reconstruct history when the archive is fraught with relativity and bias? This thesis serves two purposes; one, pulling from seminal archival science and collections management texts, it chronicles the monumental, intellectual changes to American archival sciences, theories, and institutions, and two, it shows how these early conversations pertaining to archival theories are both not far removed from digital preservation efforts …

Skier's Edge: Biomechanical Analysis, Benjamin T. Johannes

Master's Theses

ABSTRACT

Skier’s Edge: Biomechanical Analysis

Benjamin T. Johannes

The Skier’s Edge trainer can be used by novice or expert skiers. Testing was performed to analyze if the use of the Skier’s Edge could reduce in shear forces of the valgus moment on the knee joint and anterior cruciate ligament (ACL) due to lesser fatigue of muscle and a higher hamstring to quadricep (H/Q) ratio activity. This leads to a reduction of improper form and an increase in balance. Experiments performed observed the change in muscle activity with the use of the Skier’s Edge over time when compared to other forms …

Electricity Price Forecasting Using A Convolutional Neural Network, Elliott Winicki

Master's Theses

Many methods have been used to forecast real-time electricity prices in various regions around the world. The problem is difficult because of market volatility affected by a wide range of exogenous variables from weather to natural gas prices, and accurate price forecasting could help both suppliers and consumers plan effective business strategies. Statistical analysis with autoregressive moving average methods and computational intelligence approaches using artificial neural networks dominate the landscape. With the rise in popularity of convolutional neural networks to handle problems with large numbers of inputs, and convolutional neural networks conspicuously lacking from current literature in this field, convolutional …

Inactivation Of Foodborne Pathogens During Cider Fermentation, In A Cider Model System And Commerical Cider, Kathryn K. Yamada

Master's Theses

Hard cider is an alcoholic drink made from fermented crushed fruit, typically apples. The popularity of this fermented alcoholic beverage has been on the rise within the last decade. Historically, hard cider has been deemed safe due to the presence of ethanol and the low pH. Although there is lack of scientific evidence to prove that hard cider will and can be safe from foodborne pathogens. Escherichia coli O157:H7, Salmonella spp., and Listeria monocytogenes are three predominate foodborne bacterial pathogens of concern in the food and beverage industry. Escherichia coli O157:H7 in particular has been associated with fresh produce and …

Web Conference Summarization Through A System Of Flags, Annirudh M. Ankola

Master's Theses

In today’s world, we are always trying to find new ways to advance. This era has given rise to a global, distributed workforce since technology has allowed people to access and communicate with individuals all over the world. With the rise of remote workers, the need for quality communication tools has risen significantly. These communication tools come in many forms, and web-conference apps are among the most prominent for the task. Developing a system to automatically summarize the web-conference will save companies time and money, leading to more efficient meetings. Current approaches to summarizing multi-speaker web-conferences tend to yield poor …

Risk Factors For Poor Birth Outcomes In Moderately Malnourished Pregnant Women In Sierra Leone, Candice A. Rodriguez

Master's Theses

Background: Maternal malnutrition in developing countries is associated with adverse pregnancy and birth outcomes. Malnourished mothers are often faced with additional risk factors as a circumstance of poverty. Supplementary nutrition can improve the outcomes of both mother and infant. Identifying maternal nutritional and socioeconomic risk factors is critical for developing effective interventions.

Objective: A secondary analysis to evaluate maternal risk factors associated with poor birth outcomes including pregnancy loss, low birth weight, stunting, and preterm delivery among moderately malnourished pregnant women in Sierra Leone. Maternal risk factors in the analysis are age, education, parity, BMI, MUAC, gestational weight gain, and …

Subject-Specific Finite Element Models Of The Human Knee For Transtibial Amputees To Analyze Tibial Cartilage Pressure For Gait, Cycling, And Elliptical Training, Jonathon Stearns

Master's Theses

It is estimated that approximately 10-12% of the adult population suffers from osteoarthritis (OA), with long reaching burdens personally and socioeconomically. OA also causes mild discomfort to severe pain in those suffering from the disease. The incidence rate of OA for individuals with transtibial amputations is much than average in the tibiofemoral joint (TF). It is well understood that abnormal articular cartilage stress, whether that be magnitude or location, increases the risk of developing OA. Finite element (FE) simulations can predict stress in the TF joint, many studies throughout the years have validated the technology used for this purpose. This …

Dynamic Procedural Music Generation From Npc Attributes, Megan E. Washburn

Master's Theses

Procedural content generation for video games (PCGG) has seen a steep increase in the past decade, aiming to foster emergent gameplay as well as to address the challenge of producing large amounts of engaging content quickly. Most work in PCGG has been focused on generating art and assets such as levels, textures, and models, or on narrative design to generate storylines and progression paths. Given the difficulty of generating harmonically pleasing and interesting music, procedural music generation for games (PMGG) has not seen as much attention during this time.

Music in video games is essential for establishing developers' intended mood …

The Effect Of Time-Restricted Feeding On Body Weight, Energy, Mood, Sleep, And Hunger Levels Of Adults On Social Media, Rachel Elizabeth Haines

Master's Theses

The purpose of this study was to investigate the effect of time-restricted eighthour feeding on body weight, self-reported energy, mood, and hunger scores, and selfreported sleep patterns of adult men and women on social media. Generally healthy adults ages 18 to 65 were invited on social media to participate in a five-week study which involved a one week of following their normal dietary patterns succeeded by four weeks of practicing time-restricted feeding of eight hours per day, also known as 16 hours of fasting. Daily surveys were created in Survey Monkey and distributed through the messaging platform, Remind, that gathered …

A Multi-State Evaluation Of The Knowledge Of The Background And Dangers Of Popular Fad Diets Among Cooperative Extension Agents In Family And Consumer Sciences, Abigail Paige Mcalister

Master's Theses

Cooperative extension provides communities with research-based information in several areas including family and consumer sciences (FCS) (Franz & Townson, 2008). Because FCS agents teach communities about dietary guidelines, it is important that they are aware of the latest nutrition research. This study assessed the knowledge of popular fad diets and their potential adverse effects among FCS cooperative extension agents, and its relationship among the variables of location, professional certifications held, years of extension work experience, membership in professional associations, and education level. FCS extension agents in Louisiana, Texas, Arkansas, and Mississippi were emailed an online survey, which collected demographics and …

Human Path Prediction Using Auto Encoder Lstms And Single Temporal Encoders, Hayden Hudgins

Master's Theses

Due to automation, the world is changing at a rapid pace. Autonomous agents have become more common over the last several years and, as a result, have created a need for improved software to back them up. The most important aspect of this greater software is path prediction, as robots need to be able to decide where to move in the future. In order to accomplish this, a robot must know how to avoid humans, putting frame prediction at the core of many modern day solutions. A popular way to solve this complex problem of frame prediction is Auto Encoder …

Observations And Simulations Of Fire Weather Phenomena Across Scales, Matthew James Brewer

Master's Theses

The need for a better understanding of wildfires and how the atmosphere affects them provided the motivation for this work. The November 2018 Camp Fire quickly became the deadliest and most destructive wildfire in California history. In chapter 1, we investigate the contribution of meteorological conditions and a downslope windstorm event that occurred during the 2018 Camp Fire. Results show that this event was associated with mid-level and surface synoptic scale processes which created conditions favorable for a North wind event. Sustained surface winds between 3–6 m s-1 were observed with gusts of over 25 m s-1. The meteorological conditions …

Fire Weather Associated With The 2019 Northern California Public Safety Power Shutoff Events, Scott Purdy

Master's Theses

Recent high impact wildfire events across California have piloted the implementation of grid de-energization by utilities across the state. The largest utility, Pacific Gas and Electric (PG&E), deployed this tactic on seven separate occasions during 2019, four of which occurred in October. This recent ploy has been established in the wake of many deadly wildfires such as the 2018 Camp Fire as an ignition mitigation tactic. Conditions such as the state of the fuels, meteorological conditions, and the consequent fire danger were evaluated as the primary triggers for the October de-energizations. It was determined that the fuels were critically dry …

Processing And Characterization Of Ceria-Zirconia Containing Graphene Quantum Dots, Andrew Dina

Master's Theses

Zirconia-based nanoparticles have been used in various applications, such as catalyst, filters, oxygen storage, and sensors. Among many synthesis methods to produce zirconia (ZrO2) nanoparticles, aqueous sodium borohydride (NaBH4) precipitation has shown to be simple and capable of large-scale production. In this work, the NaBH4 precipitation of ZrO2 was extended to include ceria (CeO2) and graphene quantum dots (GQDs). The resulting nanocomposites were characterized by thermal, crystallographic, compositional, and electron microscopy analysis techniques. The presence of CeO2 lowered the amorphous to tetragonal phase transformation temperature by ~40 ℃. The presence of GQDs did not affect the amorphous to tetragonal transformation …

Exploring The Biological Function Of Carboxypeptidase O: Analysis Of Expression And Association With Chylomicrons And Lipid Droplets, Erika Bauza Nowotny

Master's Theses

Carboxypeptidase O (CPO) is a membrane-bound peptidase that cleaves acidic and polar C-terminal amino acids of peptides; however, its biological function remains unknown. CPO is strongly expressed in the small intestine, where it has been proposed to participate in digestion events at the brush border by extracellular cleavage of dietary peptides. At the subcellular level, CPO is anchored to the inner leaflet of the endoplasmic reticulum (ER) membrane, where it has been shown to associate with lipid droplets (LDs). The ER membrane also represents the site of iv chylomicron formation, a process that shares many similarities with that of LDs …

The Impact Of Berrien Springs Water Types On Multiethnic Hair Textures, Ralna M. Simmonds

Master's Theses

This thesis documents an explorative study into the effect of water from various Berrien Springs water sources on the multiethnic hair texture of Andrews University students/faculty. Participants were living in the area for at least five months, whether originally from the United States or other countries of the world. The theory informing this study is the Expectancy Violations Theory (EVT) by Burgoon (1976). EVT is a communication theory that examines the reaction to behaviors within nonverbal communication that are expected or unexpected in a positive or negative light. In this context EVT has not been used to examine nonverbal communication, …