Matching Items (12,828)
Filtering by
- Creators: Barrett, The Honors College
- Creators: Prokofiev, Sergey, 1891-1953
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
Description
The purpose of this project was to interview eleven Hubert H. Humphrey Fellows at the Walter Cronkite School at Arizona State University through a podcast series titled “The Global Journalist Roundtable”. During a two month period, I interviewed the eleven Fellows and through a keyword analysis of the transcripts of each interview, I determined several themes which according to the Fellows were important aspects of global media. Those themes were education, innovation, social media as a disrupter to news verifiability, polarization, censorship, the importance of truthful news, and leadership. The reason for interviewing the Humphrey Fellows specifically was due to my sheer curiosity, respect, and admiration for them as professionals in the global media industry.
ContributorsEverett, William (Author) / Silcock, William (Thesis director) / Barrett, Marianne (Committee member) / Walter Cronkite School of Journalism & Mass Comm (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Preliminary studies indicate that the use of dietary menthol may prevent excessive weight gain through the activation of the transient receptor potential melastatin family member 8 (TRPM8) ion channel. It has also been expressed that elevation of the core temperature (Tc) inducing mild hyperthermia via an increase in ambient temperature aids in a marked reduction of the drive to eat and weight gain. While caloric restriction (CR) aims to treat obesity and secondary sicknesses, weight regain is a common result during long term weight maintenance. The goal of these studies was to evaluate and identify if the menthol and mild hyperthermia mechanisms could couple synergistically to reduce or abrogate weight gain. Ambient temperature (Ta) was increased incrementally to identify the threshold in which rodents display mild hyperthermia. Our initial attempts at hyperthermia induction failed because of limitations in the environmental chamber. These trials fail to note a threshold at which elevated Tc is sustained for any period of time. The data suggests an ambient temperature of 36-38 °C would be appropriate to induce a mild hyperthermia. A mild hyperthermia is described as the elevation of Tc 2-3 ° above the hypothalamic set point. To facilitate future hyperthermia studies, an environmental chamber was designed. A wine cooler was converted to withstand the desired temperatures, through the use of heat tape, a proportional controller, and a translucent Plexiglas custom fit door. Beyond leveraging temperature to regulate weight gain, dietary changes including a comparison between standard chow food, high fat diet, and menthol supplemented chow food treatment illustrate a strong likelihood of weight gain variability. In this pilot study, weight gain expression when given a diet supplemented with menthol (1%) showed no statistical significance relative to a high fat diet nor chow food, however, it revealed a trend of reduced weight gain. It is assumed the combination of supplemental menthol and mild hyperthermia induction will exacerbate their effects.
ContributorsJohnsson, Kailin Alexis (Author) / Van Horn, Wade (Thesis director) / Herman, Richard (Committee member) / Towe, Bruce (Committee member) / Sanford School of Social and Family Dynamics (Contributor) / School of Life Sciences (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Whether fights to the death, or a masked murderer chasing an unwilling teen, viewers are seemingly drawn to human suffering. This thesis will examine the blurring of lines between traditional horror and crime films to better understand how both films provide a similar experience, as well as apply traditional film theories on pleasurable viewership to both genres, in an attempt to discover viewers’ attraction to the perverse.
ContributorsBenavidez, Markus A (Author) / Miller, April (Thesis director) / Mack, Robert (Committee member) / School of Criminology and Criminal Justice (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
"Company X," a technology company, is known for being one of the world’s largest semiconductor chip manufacturers; however, they are also one of the largest authors of software. In 2019, "Company X" entered a new paradigm where, according to the CEO, while "Company X"’s core strategy has not changed, "Company X" is embracing the transition to a data-centric company from a PC-centric company. The scope that the project examines is--in this transition to a data-centric company and based on the company's current expertise and competitive advantages--should "Company X" be branching into an additional division or leverage existing intellectual property (IP)? The goal of the project is to understand how "Company X" can leverage its expertise in hardware and software service packages to maximize the value of the company.
ContributorsArellano, Andrea (Co-author) / Roos, Bailey (Co-author) / Broas, Joshua (Co-author) / Kotti, Abhigyan (Co-author) / Simonson, Mark (Thesis director) / Hertzel, Michael (Committee member) / Dean, W.P. Carey School of Business (Contributor) / Department of Finance (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05