Barrett, The Honors College Thesis/Creative Project Collection

Drylands cover almost half of the land surface on Earth, yet there is still little understood of the processes in these ecosystems. This project studied the impact of macroclimate (precipitation and temperature in large regions) in comparison to microclimate (the climate under canopy versus in the open) to learn more about the drivers of litter decomposition in drylands.

The outlying cities of Phoenix's West Metropolitan experienced rapid growth in the past ten years. This trend is only going to continue with an average expected growth of 449-891% between 2000 and 2035 (ADOT, 2012). Phoenix is not new to growth and has consistently seen swaths of people added to its population. This raises the question of what happened to the people who lived in Phoenix's West Valley during this period of rapid change and growth in their communities? What are their stories and what do their stories reveal about the broader public history of change in Phoenix's West Valley? In consideration of these questions, the community oral histories of eight residents from the West Valley were collected to add historical nuance to the limited archival records available in the area. From this collection, the previous notion of "post-war boomtowns” describing Phoenix’s West Valley was revealed to be highly inaccurate and dismissive of the residents' experiences who lived and formed their lives there.

The outlying cities of Phoenix's West Metropolitan experienced rapid growth in the past ten years. This trend is only going to continue with an average expected growth of 449-891% between 2000 and 2035 (ADOT, 2012). Phoenix is not new to growth and has consistently seen swaths of people added to its population. This raises the question of what happened to the people who lived in Phoenix's West Valley during this period of rapid change and growth in their communities? What are their stories and what do their stories reveal about the broader public history of change in Phoenix's West Valley? In consideration of these questions, the community oral histories of eight residents from the West Valley were collected to add historical nuance to the limited archival records available on the area. From this collection, the previous notion of "post-war boomtowns” describing Phoenix’s West Valley was revealed to be highly inaccurate and dismissive of the residents' experiences who lived and formed their lives there.

As the search for life in our universe grows, it is important to not only locate planets outside of our solar system, but also to work towards the ability to understand and characterize their nature. Many current research endeavors focus on the discovery of exoplanets throughout the surrounding universe; however, we still know very little about the characteristics of these exoplanets themselves, particularly their atmospheres. Observatories, such as the Hubble Space Telescope and the Spitzer Space Telescope, have made some of the first observations which revealed information about the atmospheres of exoplanets but have yet to acquire complete and detailed characterizations of exoplanet atmospheres. The EXoplanet Climate Infrared TElescope (EXCITE) is a mission specifically designed to target key information about the atmospheres of exoplanets - including the global and spatially resolved energy budget, chemical bulk-compositions, vertical temperature profiles and circulation patterns across the surface, energy distribution efficiency as a function of equilibrium temperatures, and cloud formation and distribution - in order to generate dynamic and detailed atmospheric characterizations. EXCITE will use phase-resolved transit spectroscopy in the 1-4 micron wavelength range to accomplish these science goals, so it is important that the EXCITE spectrograph system is designed and tested to meet these observational requirements. For my thesis, I present my research on the EXCITE mission science goals and the design of the EXCITE spectrograph system to meet these goals, along with the work I have done in the beginning stages of testing the EXCITE spectrograph system in the lab. The primary result of my research work is the preparation of a simple optics setup in the lab to prepare a laser light source for use in the EXCITE spectrograph system - comparable to the preparation of incoming light by the EXCITE telescope system - which successfully yields an F# = 12.9 and a spot size of s = 39 ± 7 microns. These results meet the expectations of the system and convey appropriate preparation of a light source to begin the assembly and testing of the EXCITE spectrograph optics in the lab.

I conducted an oral history project of five women with journeys in the Christian faith who had experience working with asylum seekers and refugees in the Phoenix metropolitan area. I explore with this project the perceptions of the helping relationship through the stories of these women and how their beliefs about their faith and work inform each other to pursue meaningful connections for the benefit of others.

The first extrasolar planet discovered orbited the millisecond pulsar PSR B1257+12. These so-called "pulsar planets" have proved to be more uncommon than their early discovery might have suggested. The proximity of many known pulsar planets to their host neutron stars indicates that they formed post-supernova, possibly from material produced in the supernova. Any pre-existing planets that close would have been obliterated in the supernova. Material from the supernova falls back to an accretion disk around the neutron star analogous to a protoplanetary disk around a protostar. The composition of the supernova thus determines the composition of the planet-forming material. The pulsar planet then forms from collisions between particles within the disk. This research examines the composition of supernova remnants to explore this formation process. Chemical abundances of supernova ejecta were obtained from 3D supernova simulations. The velocities of particles containing silicate-mineral forming elements were filtered to determine what might stay in the system and thus be available for the formation of a fallback disk. The abundances of the remaining particles were compared to characterize the potential composition of such a fallback disk. Overall, the composition was roughly silicate-like, but the rates of mixing versus dust formation could lead to the production of highly exotic minerals.

Our thesis project is a 5-person group thesis that was created over the span of two years. In the summer of 2020, at the height of the first wave of the COVID-19 pandemic, our group first met and discussed our shared interests in mask-wearing and individual factors that we each thought had significant impacts on mask-wearing among Barrett students. We each decided on factors that we wanted to investigate and subsequently split into three main groups based on our interests: culture and geography, medical humanities, and medical and psychological conditions. Despite these different interests, we continued to treat our thesis as a five-person project rather than three different projects. We then constructed a survey, followed by several focus group sessions and interview questions to ask Honors students. In January 2021, we received approval from the IRB for our project, and we quickly finalized our survey, focus group and interview questions. In February 2021, we sent out our survey via the Barrett Digest, which we kept open for approximately one month. We also sent out advertisements for our survey via social media platforms such as Twitter and Discord. Following completion of the survey, we contacted all of the respondents who stated that they were interested in participating in focus groups and interviews. Focus groups and interviews were conducted in March and April 2021, and results were analyzed and correlated to our individual subtopics. Each of the focus group and interview participants received $50 each, and three randomly-selected students who completed the survey received $25 each. From April 2021 until April 2022, we analyzed our results, came to conclusions based on our initial topics of interest, and constructed our paper.

Our thesis project is a 5-person group thesis that was created over the span of two years. In the summer of 2020, at the height of the first wave of the COVID-19 pandemic, our group first met and discussed our shared interests in mask-wearing and individual factors that we each thought had significant impacts on mask-wearing among Barrett students. We each decided on factors that we wanted to investigate and subsequently split into three main groups based on our interests: culture and geography, medical humanities, and medical and psychological conditions. Despite these different interests, we continued to treat our thesis as a five-person project rather than three different projects. We then constructed a survey, followed by several focus group sessions and interview questions to ask Honors students. In January 2021, we received approval from the IRB for our project, and we quickly finalized our survey, focus group and interview questions. In February 2021, we sent out our survey via the Barrett Digest, which we kept open for approximately one month. We also sent out advertisements for our survey via social media platforms such as Twitter and Discord. Following completion of the survey, we contacted all of the respondents who stated that they were interested in participating in focus groups and interviews. Focus groups and interviews were conducted in March and April 2021, and results were analyzed and correlated to our individual subtopics. Each of the focus group and interview participants received $50 each, and three randomly-selected students who completed the survey received $25 each. From April 2021 until April 2022, we analyzed our results, came to conclusions based on our initial topics of interest, and constructed our paper.

In a hypothetical Grand Unified Theory, magnetic monopoles are a particle which would act as a charge carrier for the magnetic force. Evidence of magnetic monopoles has yet to be found and based off of their relatively high mass (4-10 TeV) will be difficult to find with current technology. The goal of my thesis is to mathematically model the magnetic monopole by finding numerical solutions to the equations of motion. In my analysis, I consider four cases: kinks, cosmic strings, global monopoles, and magnetic monopoles. I will also study electromagnetic gauge fields to prepare to include gauge fields in the magnetic monopole case. Numerical solutions are found for the cosmic string and global monopole cases. As expected, the energy is high at small distance r and drops off as r goes to infinity. Currently numerical solutions are being worked towards for electromagnetic gauge fields and the magnetic monopole case.