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The purposes of the study are to: 1) investigate how students' motivation towards reading is related to their reading comprehension skills, and 2) assess the impact of using an Intelligent Tutoring System to improve comprehension. Interactive Strategy Training for Active Reading and Thinking-3 (iSTART-3) is a game-based tutoring system designed

The purposes of the study are to: 1) investigate how students' motivation towards reading is related to their reading comprehension skills, and 2) assess the impact of using an Intelligent Tutoring System to improve comprehension. Interactive Strategy Training for Active Reading and Thinking-3 (iSTART-3) is a game-based tutoring system designed to improve students' reading comprehension skills. The current study was conducted in South Africa with 8th and 9th graders between the ages of 14 and 18. These students are multilingual and they learn English as a First Additional Language (English-FAL). Firstly, we predict that students who are highly motivated to read will have high comprehension scores than those who are slightly or not at all motivated to read. Secondly, we predict that the use of iSTART-3 will improve students' reading comprehension, regardless of their level of reading motivation, with better results for those who are more motivated to read. Counter to our predictions, the results did not reveal a relation between reading motivation and reading comprehension. Furthermore, an effect of iSTART-3 on reading comprehension was not found. These results were likely influenced by the small sample size and the length of the intervention.
ContributorsSeerane, Thato (Author) / McNamara, Danielle (Thesis director) / Glenberg, Arthur (Committee member) / Lynch, Christa (Committee member) / Department of Psychology (Contributor) / School of Social and Behavioral Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
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Description
Holocene climate dynamics for southern South Africa are still poorly understood, with only a few high-resolution isotopic studies and often contradicting records due to complex regional climates. South Africa's southern coastal margin represents an important transition zone for seasonal rainfall that reflects both regional and local climate systems. To gain

Holocene climate dynamics for southern South Africa are still poorly understood, with only a few high-resolution isotopic studies and often contradicting records due to complex regional climates. South Africa's southern coastal margin represents an important transition zone for seasonal rainfall that reflects both regional and local climate systems. To gain insight into this unique environment, an isotopic record from Glentana Cave, with 176 measurements spanning 8 ka to 0.4 ka, is presented. δ18O and δ13C signals demonstrate abrupt changes to rainfall and vegetation, and support recent studies of a highly variable southern cape during the Holocene. Specifically, a quickly expanding summer rainfall zone (SRZ) between 6.8-6.3 ka, and 2.7 ka interrupt the generally year-round-rainfall environment. During times of greater summer rainfall the environment is characterized by more C4 vegetation. When compared to other South African coeval datasets, environmental changes appear to contrast northern more than southern records.
ContributorsWhitmore, Ben (Author) / Marean, Curtis (Thesis director) / Braun, Kerstin (Committee member) / Department of Economics (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
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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

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
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Description

The threat of global climate change to the world’s water resources has jeopardized access to clean drinking water across the world and continues to devastate biodiversity and natural life globally. South Africa operates as a useful case study to understand and analyze the effectiveness of public policy responses to the

The threat of global climate change to the world’s water resources has jeopardized access to clean drinking water across the world and continues to devastate biodiversity and natural life globally. South Africa operates as a useful case study to understand and analyze the effectiveness of public policy responses to the perils of climate change on issues of water access and ecosystem preservation. After the new South African Constitution was enacted in 1997, protecting water resources and ensuring their equitable distribution across the nation’s population was a paramount goal of the young democratic government. The National Water Act was passed in 1998, nationalizing the country’s water infrastructure and putting in place programs seeking to ensure equitable distributive and environmental outcomes. Thus far, it has failed. Access to South Africa’s water resources is as stratified as access to its economy; its aquatic ecosystems remain in grave danger; and many of the same problems of South Africa’s Apartheid era still plague its efforts to create an equitable water system. Decision-making power continues to be concentrated in the hands of the wealthy, at the expense of historically marginalized groups, whose voices are still not adequately heard. Corporate actors still exert undue influence over legislative policy that favors economic growth over environmental sustainability. The looming threat of climate change is exponentially increasing the chances of disasters like Cape Town’s 2018 feared ‘Day Zero’. The National Water Act’s noble intentions were never actualized, and therefore the people of South Africa remain in serious danger of acute and chronic threats to their water supply.

ContributorsWakefield, Alex (Author) / Childers, Dan (Thesis director) / Larson, Rhett (Committee member) / Department of Economics (Contributor) / Dean, W.P. Carey School of Business (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description

This thesis aims to analyze and discuss the issues regarding South African paleoanthropology and its relationship with systematic racism. This is done through a literature review of the book Darwin’s Hunch by Christa Kuljian as well as other articles by other academics. Two main themes are explored; theme one is

This thesis aims to analyze and discuss the issues regarding South African paleoanthropology and its relationship with systematic racism. This is done through a literature review of the book Darwin’s Hunch by Christa Kuljian as well as other articles by other academics. Two main themes are explored; theme one is racism and evolutionary essentialism and theme two is physical violence and theft. These themes and other issues continue into the discussion section, which features more of the influences that inspired this thesis including prior projects and a trip to South Africa.

ContributorsOricchio, Madeleine (Author) / Ranhorn, Kathryn (Thesis director) / Drummond, Caitlin (Committee member) / Mavuso, Slindokuhle (Committee member) / Barrett, The Honors College (Contributor) / School of Human Evolution & Social Change (Contributor) / School of Life Sciences (Contributor) / School of Politics and Global Studies (Contributor)
Created2023-05
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Description

HIV &AIDS is a global epidemic that has affected the lives of millions of people across the world. According to the World Health Organization (WHO), 37.7 million people were living with HIV in 2020. Sub-Saharan Africa has been particularly affected by the epidemic, specifically, the Southern and Eastern Africa region

HIV &AIDS is a global epidemic that has affected the lives of millions of people across the world. According to the World Health Organization (WHO), 37.7 million people were living with HIV in 2020. Sub-Saharan Africa has been particularly affected by the epidemic, specifically, the Southern and Eastern Africa region which accounts for the highest number of new HIV infections, the highest number of people living with HIV, and the highest number of AIDS-related deaths. Botswana, Eswatini and South Africa are countries located in Southern Africa and have been greatly affected by the HIV & AIDS epidemic as Botswana had the highest HIV prevalence from the late 90s to the early 2000s while Eswatini currently has the HIV highest prevalence rate, and South Africa currently has the highest number of people living with HIV in the world. This paper examines the HIV & AIDS health policies adopted by these three countries in their responses to the HIV & AIDS epidemic.

ContributorsOlatotse, Mpho (Author) / Ross, Heather (Thesis director) / Jehn, Megan (Committee member) / Barrett, The Honors College (Contributor) / College of Integrative Sciences and Arts (Contributor)
Created2021-12
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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

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
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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

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
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Description
As a student at Arizona State University’s Walter Cronkite School of Journalism and Barrett, The Honors College, as well as a lover of travel, Brielle Ashford decided to combine her passions and spent four months abroad in Spring, 2019, creating a senior thesis in digital international journalism. She enrolled in

As a student at Arizona State University’s Walter Cronkite School of Journalism and Barrett, The Honors College, as well as a lover of travel, Brielle Ashford decided to combine her passions and spent four months abroad in Spring, 2019, creating a senior thesis in digital international journalism. She enrolled in the Center for Intercultural Educational Exchange's Open Campus program for a semester and spent a month and a half each in three countries. Starting in Cape Town, South Africa, she interviewed locals about their lives post-Apartheid. In Paris, France, Brielle found a story in a non-profit that teaches French youth about religious diversity. Lastly in Rome, Italy, she covered the famous, vibrant food culture of gelato at the city’s oldest gelateria. It was the experience of a lifetime and the stories stand on their own... and she made it all happen with little more than the Adobe editing suite and an iPhone X.

CAPE TOWN IN BLACK, WHITE AND COLOURED:
https://youtu.be/7egRATDxKso

RELIGIOUS SECULARITY IN PARIS: FILLING IN THE GAPS THE LAW LEFT OUT
https://youtu.be/Xd6PsFIgj0M

A TASTE OF ROME AT PALAZZO DEL FREDDO:
https://youtu.be/iW60mxD_xTo
ContributorsAshford, Brielle (Author) / Emmert, Chuck (Thesis director) / Silcock, Dr. Bill (Committee member) / School of Politics and Global Studies (Contributor) / Walter Cronkite School of Journalism & Mass Comm (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
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Description
Food provides nutrients and sustenance that are essential to life. Humans rely on food to fuel our thoughts and actions. However, food isn’t just a source of energy; it’s a fundamental part of culture and connection. Simply sharing a meal with someone can build teamwork and create

Food provides nutrients and sustenance that are essential to life. Humans rely on food to fuel our thoughts and actions. However, food isn’t just a source of energy; it’s a fundamental part of culture and connection. Simply sharing a meal with someone can build teamwork and create a bond. Throughout this short memoir, I explored the ways in which food creates a connection across language and cultural barriers through reflection on specific experiences that I had in India, Uganda, and South Africa. While my experiences in each of these three countries were vastly different, there was one defining theme that brought them together: food. This memoir uses mixed media (personal reflection, research, recipes, and photos) to connect the three different international experiences. Reflection on my own family traditions and history bridges the gap between my upbringing and my interactions with people while spending time abroad. Popular recipes from each of the three countries are mixed into the personal reflection, showing how preparing food in a different geographic location can change the experience of preparation and eating. In addition to personal experience, included is a synthesis of research done on the effects of sharing a plate or a meal on negotiations tactics, how eating the same food increases trust, the ways in which food sharing is an act of social intimacy, and how it can build community. Food is an important part of family connection, a tool in many rituals such as Sunday dinners or breaking bread, a critical aspect of many religions, and is tied to the celebration of both birth and death in cultures around the globe. We all need to eat; food is the great commonality among people.
ContributorsRivard-Lentz, Haley Marie Anne (Co-author) / Rivard-Lentz, Haley (Co-author) / Fette, Donald (Thesis director) / Jacobs, Mark (Committee member) / School of Sustainability (Contributor) / School of Public Affairs (Contributor) / Watts College of Public Service & Community Solut (Contributor) / College of Integrative Sciences and Arts (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05