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- Creators: Barrett, The Honors College
- Creators: Haydn, Joseph, 1732-1809
Description
In this paper, I describe the development of a unique approach to developing strategies for games in which success can only be measured by the final outcome of the game, preventing the use of heuristics. I created and evaluated evolutionary algorithms, applying them to develop strategies for tic-tac-toe. Strategies are comprised of neural networks with randomly initiated weights. A population of candidate strategies are created, each strategy competes individually against each other strategy, and evolutionary operators are applied to create subsequent generations of strategies. The set of strategies within a generation of the evolutionary algorithm forms a metagame that evolves as the algorithm progresses. Hypothesis testing shows that strategies produced by this approach significantly outperform a baseline of entirely random action, although they are still far from optimal gameplay.
ContributorsRodriguez, Julien Guillermo (Author) / Martin, Thomas (Thesis director) / Powers, Brian (Committee member) / College of Integrative Sciences and Arts (Contributor, Contributor) / Department of Information Systems (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Substance use during adolescence is a significant predictor of developing a later substance use disorder. An encouraging trend is that there have been recent declines in rates of adolescent substance use, including alcohol and marijuana. However, these two substances may be decreasing differently from one another as a result of age, period, and cohort effects. Therefore, the overall trend of decreased substance use in more recent generations of adolescents may be greater for one substance than the other. The current study tested declines in adolescent alcohol and marijuana use across two generations measured in 1988-1990 and 2006-2012. Methodological strengths include controls for demographic characteristics and for parental alcohol disorder (as a proxy for genetic risk). Moreover, we tested whether findings would replicate using two methods—first comparing all assessed members of one generational cohort with all assessed members of the other generational cohort, and then comparing only matched parent-child pairs. Testing this second matched sample removes some potential demographic and risk confounds that might occur across cohorts in typical epidemiological studies. Results demonstrated that the younger cohort of adolescents used both substances less than the older cohort, and this effect was stronger for alcohol than for marijuana. These results were replicated in both samples over and above demographic variables. The parent-child sample showed that children used less alcohol and marijuana than did their parent during the same age period, suggesting that these trends cannot simply be due to changes in the demographics of the adolescent population over time. Taken together with epidemiological studies, these findings suggest encouraging declines in adolescent substance use rates but also indicate less decline in marijuana use compared to alcohol use. This prompts further surveillance to determine if marijuana use rates may start increasing among adolescents in the future.
ContributorsWatters, Shannon Marie (Author) / Chassin, Laurie (Thesis director) / Presson, Clark (Committee member) / Department of Psychology (Contributor) / School of Social Transformation (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
In the US, individuals between ages 18-26 years old have the highest incidence of new HPV infection, the most common sexually transmitted infection. HPV infection can lead to the development of non-cancerous genital warts and persistent infection with cancerous strains can cause various cancers. An HPV vaccine which offers protection against seven cancerous strains and the two non-cancerous strains which cause genital warts has recommended for use by the Centers for Disease Control and Prevention for both men and women beginning in 2011. However, young adult men, including college-aged men, are lagging in HPV vaccine uptake and completion. This cross-sectional study, guided by the Health Belief Model and Theory of Planned Behavior, seeks to explore college men’s behaviors and intentions to getting the HPV vaccine (primary outcomes). It also seeks to explore their perceived susceptibility and severity of HPV infection; attitudes about the HPV vaccine, self-efficacy and social norms to vaccinate, and stigma related to HPV infection (secondary outcomes). Study results showed that only 33% of college men reported knowing they had received at least one dose of the HPV vaccine. The majority of men reported they had never had a conversation about the HPV vaccine with their primary care provider. Overall, men had positive attitudes about the HPV vaccine, high self-efficacy to communicate and access the vaccine, but low intentions and low social norms to vaccinate against this virus. Outcomes of this research suggest the need for future intervention work to focus on increasing college males’ social norms to vaccinate against HPV. Influencing parents, peers, and other influential individuals to encourage college males to vaccinate against HPV may, in fact, increase their intentions and behaviors to utilize this cancer prevention resource.
ContributorsMcwilliams, Emily (Author) / Koskan, Alexis (Thesis director) / Helitzer, Deborah (Committee member) / College of Health Solutions (Contributor) / Sanford School of Social and Family Dynamics (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The purpose of this study is to analyze what barriers of care exist within the Senor de los Milagros community in Trujillo, Peru and how these barriers to care can identify shortcomings in the public healthcare system. This study is a collaboration of field research and outside literature. The research conducted was done via structured interviews with 15 participants, all promotoras (mothers of the community) and their husbands in the Senor de los Milagros community of Trujillo, Peru. Summaries and quotes from these interviews were uploaded and quantified to identify common barriers to care derived from socioeconomic and cultural determinants . Although this was on the main focus of the study, observations and conversations with healthcare staff and patients showed that the two most specific barriers found when data was analyzed were the wait times of public sector facilities and quality of care within these facilities. These barriers to care did not stop the promotoras from seeking care at MINSA facilities, but it does pose the questions as to how it affects healthcare-seeking behaviors and if this affects long-term healthcare outcomes.
ContributorsDragon, Jordan Elizabeth (Author) / Maupin, Jonathan (Thesis director) / Marsteller, Sara (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The ASU Compact X-ray Free Electron Laser (CXFEL) is a first of its kind instrument that will illuminate the processes of life and allow scientists to create more effective treatments for disease. The dimensions of the linear accelerator (LINAC) cavities must remain stable during operation, for a change in the geometry alters the standing wave microwave energy resonance within the cavities and leads to reflected rather than coupled and useful microwave energy to electric field coupling. This disturbs the electron bunch acceleration dynamics critical to the ultimate generation of x-ray pulses. Cooling water must be supplied to the electron generating RF-GUN, and linear accelerator (LINAC) structures at unique flowrate and temperature setpoints that are specific to the operating mode of the CXFEL. Design specifications for the water supply to the RF-GUN and three LINACs and were made for the nominal operating mode, which adds a 3 kW heat load to the water. To maintain steady cavity dimensions, water must be supplied to each device under test at 30.0 ºC ± 0.06 ºC. The flowrate of water must be 3.5 GPM to the RF-GUN and 2.5 GPM to each of the three LINACs with ± 0.01 GPM flowrate resolution. The primary function of the Dedicated-Precision Thermal Trim Unit (D-PTTU) is to control the flowrate and temperature of water supply to each device under test. A simplified model of the system was developed to select valves that would meet our design specifications for flowrate and temperature control. After using this model for valve selection, a detailed system model was created to simulate relevant coupled-domain physics of the integrated system. The detailed system model was used to determine the critical sensitivities of the system and will be used to optimize the performance of the system in the future. Before the detailed system model can be verified and tuned with experiments, the sensors were calibrated in an ice-bath to ensure the sensors measure accurate and precise values. During initial testing, the D-PTTU was able to achieve ± 0.02 ºC temperature resolution, which exceeds the design specification by a factor of three.
ContributorsGardeck, Alex John (Author) / Holl, Mark (Thesis director) / Smith, Dean (Committee member) / Department of Physics (Contributor) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Regenerative medicine is a relatively new area of interest among researchers and physicians alike and has truly come to light within the last twenty years. Its purpose is to “regenerate” cells in our body to return tissue and organs systems to their normal functions by utilizing innate cell mechanisms. Uses have ranged from growing completely new body tissue in labs, to promoting the repair of damaged neurons. More recently, the use of regenerative medicine techniques such as stem cell and platelet rich plasma therapy has seen significant growth throughout high level and professional sports. Beginning in the early 2000s, treatments quickly gained popularity as professional athletes began using them as an alternative to surgery, but this came before any concrete scientific support. This thesis paper will analyze the current statistical data supporting the use of platelet rich plasma and stem cell therapy and associated regulations to describe the connection between regenerative medicine and sports.
ContributorsFritzke, Jack Teodor (Author) / Washo-Krupps, Delon (Thesis director) / Foster, William (Committee member) / Levinson, Simin (Committee member) / School of Life Sciences (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Trends in the beauty industry begin when large portions of the market shift to focus on a specific idea. These trends can be fleeting, or they can be permanent, but they have the ability to alter the course of the industry for decades. Every trend that comes and goes must be analyzed by brands to determine if it is worth following or if it would be more advantageous to take a different path. Some of the biggest trends in the beauty industry right now are inclusivity, sustainability, and clean beauty. I conducted a survey to determine the importance of these trends through consumers’ level of awareness and how the trends effect their purchasing decisions. I found that consumers are very aware of all three trends and that their willingness to purchase from brands that are more inclusive, sustainable, and clean is correlated with how much they are willing to spend on products from brands that follow the trends. The results from the survey suggest that there is a high demand for brands that are inclusive, sustainable, and clean. Therefore, it could be a good idea for brands to follow one or multiple of these trends and incorporate them into their marketing strategies.
ContributorsChavez, Melissa (Author) / Montoya, Detra (Thesis director) / Schlacter, John (Committee member) / Department of Marketing (Contributor) / Hugh Downs School of Human Communication (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
In 2015, the Law and Justice Party [Prawo I Sprawiedliwość, PiS] won the majority of seats in parliament and took control of Poland. PiS has a populist platform that has led to undemocratic practices, especially in the judicial branch, that are being questioned by the EU. This study evaluates the role that globalization, a concept that has been linked to other European countries’ citizens' appeal to right-wing populist groups, has in Poland’s rise of PiS. Two Polish websites, Przeglad and Wprost were analyzed to observe the change in positive and negative language before and after PiS’s rise to power and to observe how it has impacted party polarization. Articles that had one or more of eight key terms associated with globalization were analyzed for the negativity and positivity. Additionally, when observing sentiment over time, the term “globalization” has converged between the two websites, while “WTO” has remained consistent. Overall, the results showed that language has shifted towards neutrality, with a movement from strong positive or strong negative, to weak positive and weak negative; however, with only a few key terms being statistically significant there is a need for further research into more key terms and additional websites.
ContributorsMitina, Maria (Author) / Thomson, Henry (Thesis director) / Cichopek-Gajraj, Anna (Committee member) / Department of Economics (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Vitamin D3 (cholecalciferol) is an essential micronutrient that plays a key role in developmental growth and lifespan in mammals. However, few studies have shown how vitamin D3 plays its vital functions in arthropods. Here, we examined the effects of full (13.3 IU/mL) and half dose (6.65 IU/mL) vitamin D3 on the growth and lifespan of Drosophila melanogaster. Vitamin B12 is another micronutrient that shows decreases absorption in elderly patients and might be linked to symptoms associated with aging rather than lifespan, but again, the effects of vitamin B12 supplementation in arthropods is poorly characterized. Results showed that both full and half doses of vitamin D3 and B12 do not significantly alter the timing of pupariation or adult eclosion. Similarly, the mortality rate of adult D. melanogaster exposed to vitamin B12 or higher doses of vitamin D3 was not significantly decreased or increased. However, a low dose of vitamin D3 did significantly lower the mortality rate of D. melanogaster. The genetic composition of Drosophila for vitamin B12 and D metabolism showed similarities in humans. However, there are no biological evidences if these genes are functional thus, this may explain the results of this study.
ContributorsRebonza, Edzel May Suico (Author) / Hackney Price, Jennifer (Thesis director) / Jurutka, Peter (Committee member) / School of Mathematical and Natural Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
As graduation season approaches each year, companies are seeking to hire the top talent from different universities all over the world. The battle to hire recent college graduates stems from the desire to hire young, hungry, and excited employees. However, with young age comes a lack of experience and exposure to the work force. The purpose of this thesis is to understand how recruiters from large corporations decide which candidates to hire, specifically candidates who are recent college graduates. Given that recent college graduates have little to no experience, it can be challenging for recruiters to determine their potential performance in each role. In comparison to seasoned professionals who have years of industry experience under their belts, it can be challenging for a recruiter effectively determine a young professional’s skills, work ethic, and industry knowledge.
I have identified and explained the different hiring methods that companies use when recruiting new talent to provide background information for my research. Furthermore, I have also interviewed several recruiters from large corporations in order to gain a further understanding of the university recruitment process, including what works and what doesn’t work. From the gathered research, I discovered key findings surrounding the topics of the interview process itself, how to properly assess a candidate, key components of the process and suggestions for enhancing the process. With this information, I have established recommendations for interviewing college graduates such as incorporating a pre-hire assessment into the process, implementing an on-site experience, condensing the process and clearly defining the interview protocol.
I have identified and explained the different hiring methods that companies use when recruiting new talent to provide background information for my research. Furthermore, I have also interviewed several recruiters from large corporations in order to gain a further understanding of the university recruitment process, including what works and what doesn’t work. From the gathered research, I discovered key findings surrounding the topics of the interview process itself, how to properly assess a candidate, key components of the process and suggestions for enhancing the process. With this information, I have established recommendations for interviewing college graduates such as incorporating a pre-hire assessment into the process, implementing an on-site experience, condensing the process and clearly defining the interview protocol.
ContributorsThurman, Brittney Victoria (Author) / Montoya, Detra (Thesis director) / Dietrich, John (Committee member) / Department of Management and Entrepreneurship (Contributor) / Department of Marketing (Contributor) / Department of Information Systems (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05