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- Creators: Barrett, The Honors College
- Creators: Kavazanjian, Edward
- Creators: Allenby, Braden
- Creators: Cadillo – Quiroz, Hinsby
Description
The purpose of this study was to determine whether a peer nursing student who presents a longitudinal case study on warfarin in a pharmacology course classroom influences prelicensure and postbaccalaureate nursing students' knowledge and perceived knowledge about warfarin. The study was a descriptive design that used a convenience sample of baccalaureate nursing students enrolled in two pharmacology courses. All participating students answered warfarin case-study questions and completed a self-demographic questionnaire, a knowledge pretest and posttest, and a self-efficacy questionnaire after the activity, which evaluated students' knowledge and perceived knowledge on 11 warfarin concepts. For all students (N = 89), the number of correct answers improved significantly between pretests and posttests for Items 2-11 (p < .0001; Wilcoxon signed-rank tests), which evaluated students' knowledge on warfarin's site of action, associated laboratory values, use of vitamin K, and food-drug interactions. However, no significant difference was seen in the number of correct answers for warfarin's mechanism of action. Comparing prelicensure and postbaccalaureate groups by Mann-Whitney tests, no significant difference was seen for pretest total scores (median 7.00, n = 55; median 7.50, n = 34; respectively; p = .399). Similarly, no difference was seen for posttest total scores by groups (prelicensure: median = 9.00, n =54; postbaccalaureate: median = 10.00, n = 32; p = .344). Overall, students in both groups agreed that they could identify and explain all 11 warfarin concepts. The Pearson correlation between the total posttest and total self-efficacy scores for the combined group was .338 (p = .003), demonstrating a low but significant correlation between students' posttest total scores and their perceived warfarin knowledge, as evaluated by the self-efficacy questionnaire.
ContributorsLam, Wing Tung (Author) / Vana, Kimberly (Thesis director) / Holcomb, Cynthia (Committee member) / Silva, Graciela (Committee member) / Barrett, The Honors College (Contributor) / Arizona State University. College of Nursing & Healthcare Innovation (Contributor) / W. P. Carey School of Business (Contributor)
Created2014-12
Description
Mentorship is important to learning because it provides a frame of reference and the guidance necessary to succeed for those who are inexperienced. The purpose of this study was to explore the impact of a one-semester mentorship program for freshman Barrett nursing students. Specifically, it was hypothesized that freshman Barrett nursing students (mentees) would experience higher levels of confidence as they enter their second year. With improved confidence and better preparation in handling stress, freshman Barrett students are more likely to stay in the Barrett program throughout their time at a university in the southwestern United States. The mentorship program included freshman Barrett students pursuing a degree in nursing as the mentees and Term 8 (senior) Barrett Nursing students as the mentors. The mentorship program supported freshman students in reaching out to their mentors for study tips, class advice, homework help, and use them as a general resource throughout the application process. Quantitative data was collected in a pre- and post-survey in order to analyze the confidence scores of mentors and mentees. The survey asked participants questions regarding their level of self-confidence and asked them to rank their responses on a Likert scale with 1 being strongly disagree and 5 being strongly agree. The results showed that confidence levels based on the quantitative data either stayed the same or was improved in every participant. Specifically, there were multiple statistically significant findings based on the paired t-tests that were run. Findings suggest the mentorship program improved the confidence levels in both freshman Barrett students and their Senior mentors.
ContributorsZurbriggen, Abigail Marie (Author) / Quillman, Jill (Thesis director) / Stevens, Carol (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
Description
Women and people of color are some of the most underrepresented groups in the STEM field (science, technology, engineering, and mathematics). The purpose of this study was to uncover the barriers that undergraduate Hispanic women, as well as other women of color, face while pursuing an education in a STEM-related major at Arizona State University (ASU). In-depth interviews were conducted with 13 adult participants to dig deeper into the experiences of each woman and analyze how race and class overlap in each of the women's experiences. The concept of intersectionality was used to highlight various barriers such as perceptions of working versus middle-class students, the experience of being a first-generation college student, diversity campus-wide and in the classroom, effects of stereotyping, and impacts of mentorships. All women, no matter their gender, race, or socioeconomic status, faced struggles with stereotyping, marginalization, and isolation. Women in STEM majors at ASU performed better when provided with positive mentorships and grew aspirations to become a professional in the STEM field when encouraged and guided by someone who helped them build their scientific identities. Working-class women suffered from severe stress related to finances, family support, employment, and stereotyping. Reforming the culture of STEM fields in higher education will allow women to achieve success, further build their scientific identities, and increase the rate of women graduating with STEM degrees.
ContributorsValdivia, Lilianna Alina (Author) / Kim, Linda (Thesis director) / Camacho, Erika (Committee member) / School of Mathematical and Natural Sciences (Contributor) / School of Social and Behavioral Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Through interviews with student participants in Barrett Summer Scholars during 2012, I uncovered how education in Arizona is failing and succeeding in meeting the needs of its high-achieving, oftentimes academically disillusioned students. Many high-achieving students feel underserved by their education and do not receive adequate challenges or one-on-one attention. Socioeconomic, ethnic, and racial limitations further contribute to the disenchantment of students and educational inequalities in the US and Arizona in particular. The Barrett Summer Scholars program itself intends to help engage these students, but it may be failing in its stated goals. Limited resources make it difficult for schools to pay as much attention to the high-achieving students as to the low-achieving, but Barrett might be able to help bridge this gap and provide students with one-on-one attention by way of student mentorship.
ContributorsManrique, Liliana (Author) / Popova, Laura (Thesis director) / Eder, James (Committee member) / Barrett, The Honors College (Contributor) / School of International Letters and Cultures (Contributor) / School of Human Evolution and Social Change (Contributor)
Created2014-05
Description
Currently conventional Subtitle D landfills are the primary means of disposing of our waste in the United States. While this method of waste disposal aims at protecting the environment, it does so through the use of liners and caps that effectively freeze the breakdown of waste. Because this method can keep landfills active, and thus a potential groundwater threat for over a hundred years, I take an in depth look at the ability of bioreactor landfills to quickly stabilize waste. In the thesis I detail the current state of bioreactor landfill technologies, assessing the pros and cons of anaerobic and aerobic bioreactor technologies. Finally, with an industrial perspective, I conclude that moving on to bioreactor landfills as an alternative isn't as simple as it may first appear, and that it is a contextually specific solution that must be further refined before replacing current landfills.
ContributorsWhitten, George Avery (Author) / Kavazanjian, Edward (Thesis director) / Allenby, Braden (Committee member) / Houston, Sandra (Committee member) / Civil, Environmental and Sustainable Engineering Programs (Contributor) / Barrett, The Honors College (Contributor)
Created2013-05
Characterization and Manipulation of Microbiomes From Arid Landfills for Improved Methane Production
Description
Environmentally harmful byproducts from solid waste’s decomposition, including methane (CH4) emissions, are managed through standardized landfill engineering and gas-capture mechanisms. Yet only a limited number of studies have analyzed the development and composition of Bacteria and Archaea involved in CH4 production from landfills. The objectives of this research were to compare microbiomes and bioactivity from CH4-producing communities in contrasting spatial areas of arid landfills and to tests a new technology to biostimulate CH4 production (methanogenesis) from solid waste under dynamic environmental conditions controlled in the laboratory. My hypothesis was that the diversity and abundance of methanogenic Archaea in municipal solid waste (MSW), or its leachate, play an important role on CH4 production partially attributed to the group’s wide hydrogen (H2) consumption capabilities. I tested this hypothesis by conducting complementary field observations and laboratory experiments. I describe niches of methanogenic Archaea in MSW leachate across defined areas within a single landfill, while demonstrating functional H2-dependent activity. To alleviate limited H2 bioavailability encountered in-situ, I present biostimulant feasibility and proof-of-concepts studies through the amendment of zero valent metals (ZVMs). My results demonstrate that older-aged MSW was minimally biostimulated for greater CH4 production relative to a control when exposed to iron (Fe0) or manganese (Mn0), due to highly discernable traits of soluble carbon, nitrogen, and unidentified fluorophores found in water extracts between young and old aged, starting MSW. Acetate and inhibitory H2 partial pressures accumulated in microcosms containing old-aged MSW. In a final experiment, repeated amendments of ZVMs to MSW in a 600 day mesocosm experiment mediated significantly higher CH4 concentrations and yields during the first of three ZVM injections. Fe0 and Mn0 experimental treatments at mesocosm-scale also highlighted accelerated development of seemingly important, but elusive Archaea including Methanobacteriaceae, a methane-producing family that is found in diverse environments. Also, prokaryotic classes including Candidatus Bathyarchaeota, an uncultured group commonly found in carbon-rich ecosystems, and Clostridia; All three taxa I identified as highly predictive in the time-dependent progression of MSW decomposition. Altogether, my experiments demonstrate the importance of H2 bioavailability on CH4 production and the consistent development of Methanobacteriaceae in productive MSW microbiomes.
ContributorsReynolds, Mark Christian (Author) / Cadillo-Quiroz, Hinsby (Thesis advisor) / Krajmalnik-Brown, Rosa (Thesis advisor) / Wang, Xuan (Committee member) / Kavazanjian, Edward (Committee member) / Arizona State University (Publisher)
Created2022
Description
Zero-Valent Metals (ZVM) are highly reactive materials and have been proved to be effective in contaminant reduction in soils and groundwater remediation. In fact, zero-Valent Iron (ZVI) has proven to be very effective in removing, particularly chlorinated organics, heavy metals, and odorous sulfides. Addition of ZVI has also been proved in enhancing the methane gas generation in anaerobic digestion of activated sludge. However, no studies have been conducted regarding the effect of ZVM stimulation to Municipal Solid Waste (MSW) degradation. Therefore, a collaborative study was developed to manipulate microbial activity in the landfill bioreactors to favor methane production by adding ZVMs. This study focuses on evaluating the effects of added ZVM on the leachate generated from replicated lab scale landfill bioreactors. The specific objective was to investigate the effects of ZVMs addition on the organic and inorganic pollutants in leachate. The hypothesis here evaluated was that adding ZVM including ZVI and Zero Valent Manganese (ZVMn) will enhance the removal rates of the organic pollutants present in the leachate, likely by a putative higher rate of microbial metabolism. Test with six (4.23 gallons) bioreactors assembled with MSW collected from the Salt River Landfill and Southwest Regional Landfill showed that under 5 grams /liter of ZVI and 0.625 grams/liter of ZVMn additions, no significant difference was observed in the pH and temperature data of the leachate generated from these reactors. The conductivity data suggested the steady rise across all reactors over the period of time. The removal efficiency of sCOD was highest (27.112 mg/lit/day) for the reactors added with ZVMn at the end of 150 days for bottom layer, however the removal rate was highest (16.955 mg/lit/day) for ZVI after the end of 150 days of the middle layer. Similar trends in the results was observed in TC analysis. HPLC study indicated the dominance of the concentration of heptanoate and isovalerate were leachate generated from the bottom layer across all reactors. Heptanoate continued to dominate in the ZVMn added leachate even after middle layer injection. IC analysis concluded the chloride was dominant in the leachate generated from all the reactors and there was a steady increase in the chloride content over the period of time. Along with chloride, fluoride, bromide, nitrate, nitrite, phosphate and sulfate were also detected in considerable concentrations. In the summary, the addition of the zero valent metals has proved to be efficient in removal of the organics present in the leachate.
ContributorsPandit, Gandhar Abhay (Author) / Cadillo – Quiroz, Hinsby (Thesis advisor) / Olson, Larry (Thesis advisor) / Boyer, Treavor (Committee member) / Arizona State University (Publisher)
Created2019
Description
RISE Tutoring is an ASU student organization which helps refugee youth achieve academic and personal success through tutoring and mentorship. As a member of RISE Tutoring for three years, the researcher sought to document and analyze the program’s impact on the Phoenix refugee community. It was determined that video documentation, with its ability to capture both visual and verbal testimony, was the ideal holistic approach to assess and share this impact. The researcher hypothesized that RISE Tutoring adds value to the lives of its tutors and students through the multidimensional growth––educational, personal, and cultural––it facilitates for all. Methods of data collection were limited to video and audio, but approval from the Institutional Review Board and consent from all participants were obtained prior to the project’s start. The final video, filmed and edited with the help of a professional videographer, was 20 minutes and 21 seconds in length. The findings derived from the recorded interviews with students, tutors, and community leaders, and from the footage of tutoring and group activities, validated the researcher’s hypothesis. Viewers of the video can witness the bonding of tutors and students; hear the pride in the voices of the tutors and see the passion in their eyes when they speak of their students; and feel the joy and excitement that the program brings to its students’ lives. This project transformed the personal experiences of participants into a collective RISE Tutoring identity which can now be presented, for the first time, to the public. The video also aimed to help RISE Tutoring share its meaningful work and improve its marketing efforts, thereby enabling the organization to recruit more tutors and students, build new partnerships, and fundraise. Through the fulfillment of these goals, the video will empower the organization to effect greater change in the community.
ContributorsMarkowitz, Brenley Paige (Co-author) / Markowitz, Brenley (Co-author) / Klimek, Barbara (Thesis director) / Long, Elenore (Committee member) / School of Politics and Global Studies (Contributor) / School of International Letters and Cultures (Contributor) / Economics Program in CLAS (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
It is widely accepted that mentorship between people of similar backgrounds and slightly different ages is a mutually beneficial partnership (e.g., Angelique, Kyle, & Taylor, 2002; Yomtov, 2017). Mentoring relationships exist in many forms across the education spectrum, from middle school students interacting with their younger peers to the popular “Big-Little system” adopted by fraternity and sorority groups in U.S. colleges and universities, and beyond educational settings throughout the working world. However, one place where mentoring has received relatively less attention, from researchers as well as from practitioners, is in undergraduate student leadership-focused organizations at the college level.
ContributorsBrown, Tyler (Co-author) / Oetter, Joshua (Co-author) / Ott, Molly (Thesis director) / Marley, Scott (Committee member) / Educational Leadership & Innovation, Division (Contributor) / School of Accountancy (Contributor) / Walter Cronkite School of Journalism & Mass Comm (Contributor) / Department of Marketing (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The purpose of this project is to explore minority mentorship through a series of interviews recorded and shared in a podcast-like format. I sat down with student leaders, Arizona State University faculty, and community leaders in the Phoenix Metropolitan area who have been both a mentor and mentee at some point in their life to learn about the impact mentorship had on their experiences.
ContributorsValdes Cosilion, Valeria (Author) / Jakubczak, Laura (Thesis director) / Scott, Jason (Committee member) / Barrett, The Honors College (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Department of Management and Entrepreneurship (Contributor) / The Sidney Poitier New American Film School (Contributor)
Created2022-05