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- Genre: Masters Thesis
- Creators: Arizona State University
- Creators: Chakraborty, Bijeta
- Member of: ASU Electronic Theses and Dissertations
Description
This thesis discusses the intersection of Christian and Blues exegesis and hermeneutics in the life and lyrics of Eddie "Son" House, a Baptist and Methodist preacher and Blues singer who was born in Lyon, Mississippi. It is intended as a biographical case study that highlights and explores the complex and multifaceted relationship between Black Protestant Preaching and Blues Singing/Preaching. In doing so, it critically appropriates Religious Studies theoretical and methodological considerations, orientations, and insights--particularly those from Charles Long and Paul Ricoeur--to examine the life, artistry, ministry, and lyrics of House in light of his expressed religious orientations and dual, often conflicting roles as a Christian Minister and Blues Preacher.
ContributorsBroyles, Michael (Author) / Moore, Moses (Thesis advisor) / Ali, Souad (Committee member) / Anderson, Lisa (Committee member) / Arizona State University (Publisher)
Created2013
Description
Efficiency of components is an ever increasing area of importance to portable applications, where a finite battery means finite operating time. Higher efficiency devices need to be designed that don't compromise on the performance that the consumer has come to expect. Class D amplifiers deliver on the goal of increased efficiency, but at the cost of distortion. Class AB amplifiers have low efficiency, but high linearity. By modulating the supply voltage of a Class AB amplifier to make a Class H amplifier, the efficiency can increase while still maintaining the Class AB level of linearity. A 92dB Power Supply Rejection Ratio (PSRR) Class AB amplifier and a Class H amplifier were designed in a 0.24um process for portable audio applications. Using a multiphase buck converter increased the efficiency of the Class H amplifier while still maintaining a fast response time to respond to audio frequencies. The Class H amplifier had an efficiency above the Class AB amplifier by 5-7% from 5-30mW of output power without affecting the total harmonic distortion (THD) at the design specifications. The Class H amplifier design met all design specifications and showed performance comparable to the designed Class AB amplifier across 1kHz-20kHz and 0.01mW-30mW. The Class H design was able to output 30mW into 16Ohms without any increase in THD. This design shows that Class H amplifiers merit more research into their potential for increasing efficiency of audio amplifiers and that even simple designs can give significant increases in efficiency without compromising linearity.
ContributorsPeterson, Cory (Author) / Bakkaloglu, Bertan (Thesis advisor) / Barnaby, Hugh (Committee member) / Kiaei, Sayfe (Committee member) / Arizona State University (Publisher)
Created2013
Description
Few studies focus on the MOVE Organization (MOVE), let alone its presences in popular media during the years prior to the MOVE-Philadelphia Conflict (1978-1985), or pre-Conflict. To date, most information about MOVE derives from Conflict research which utilizes archival materials from the Philadelphia Special Investigation Commission (MOVE Commission) hearings. Generations of dominant representations about MOVE and its members, consequently, are mainly constructed by popular media from the MOVE Commission hearings, including video broadcasts of the proceeding. Using a Conflict documentary, I highlight concerns scholars face when heavily using archival materials from MOVE Commission hearings: (a) Archival materials from MOVE Commission hearings lack active MOVE members' voices and (b) Archival materials from MOVE Commission hearings include limited pre-Conflict information about MOVE members. Influenced by Kimberly Sanders and Judson Jeffries' (2013) work about the 1985 bombing newspaper reports' favorability, this project explores pre-Conflict popular media representations of MOVE to understand how the collective first got represented to Philadelphians and the ways which MOVE used popular media to respond to these dominant portrayals.
This mix-methods project utilizes 67-piece dataset materials of various popular media texts by MOVE members and non-MOVE members. It focuses on 48 Philadelphia Tribune newspaper entries as its main text dataset, with an emphasis on the 1975 "On the MOVE" editorial column space. This investigation employs a combination of Black feminist and critical discourse analysis (CDA) methods, with Sanders and Jeffries' (2013) favorability categorizations process, to explore the racialized, gendered, and classed aspects pre-Conflict representations of MOVE.
Quantitative findings suggest that MOVE got generally represented in favorable manners during the pre-Conflict years, with over 50 percent of pre-Conflict texts about MOVE portraying the collective in positive tones. Additionally, qualitative findings propose that MOVE members' authorship and presence in pre-Conflict texts within the Philadelphia Tribune functioned as a site of resistance against dominant portrayal of the collective. CDA findings propose that MOVE's racial attribute, beliefs, and culture, specifically related to self-determination, were central discussions within most pre-Conflict by MOVE members. Unlike Sanders and Jeffries (2013), this project concludes that overall pre-Conflict popular media depictions portrayed MOVE as a positive Philadelphia collective.
This mix-methods project utilizes 67-piece dataset materials of various popular media texts by MOVE members and non-MOVE members. It focuses on 48 Philadelphia Tribune newspaper entries as its main text dataset, with an emphasis on the 1975 "On the MOVE" editorial column space. This investigation employs a combination of Black feminist and critical discourse analysis (CDA) methods, with Sanders and Jeffries' (2013) favorability categorizations process, to explore the racialized, gendered, and classed aspects pre-Conflict representations of MOVE.
Quantitative findings suggest that MOVE got generally represented in favorable manners during the pre-Conflict years, with over 50 percent of pre-Conflict texts about MOVE portraying the collective in positive tones. Additionally, qualitative findings propose that MOVE members' authorship and presence in pre-Conflict texts within the Philadelphia Tribune functioned as a site of resistance against dominant portrayal of the collective. CDA findings propose that MOVE's racial attribute, beliefs, and culture, specifically related to self-determination, were central discussions within most pre-Conflict by MOVE members. Unlike Sanders and Jeffries (2013), this project concludes that overall pre-Conflict popular media depictions portrayed MOVE as a positive Philadelphia collective.
ContributorsEkeogu, Onyekachi Joi (Author) / Quan, Helen (Thesis advisor) / Bortner, Peg (Committee member) / Gomez, Alan (Committee member) / Arizona State University (Publisher)
Created2014
Description
ABSTRACT
Colorism is the intra-racial system of inequality based on skin color, hair texture, and facial features. In the African American culture, colorism has deeply rooted origins that continue to affect the lives of African Americans today. This study examined how colorism effects perceptions of personal characteristics, personal attributes, work ability, and hiring decisions of African American women 18 and older.
Participants for this study consisted of 188 African American women who self-identified as African American/Black and who were over 18 years of age living in the United States. All participants completed a demographic sheet and three instruments: Occupational Work Ethic Inventory (OWEI; Petty, 1995), Personal Attributes Questionnaire (PAQ; Spence, Helmreich, & Stapp, 1974) and Personal Efficacy Beliefs Scale (PEBS; Riggs et al., 1994). They were randomly assigned to one of six vignettes describing a young African American/Black woman applying for a job. She was described as having one of three skin-tones (light, brown, or dark) and having kinky or straight hair.
A multiple analysis of variance (MANOVA) failed to reveal differences in personal characteristics, personal attributes, and work ability due to skin tone or to hair texture. Multiple linear regression analyses revealed that hair texture predicted hiring decision, after controlling for relevant demographic variables. Participant education and vignette hair texture influenced hiring decisions, accounting for 8.2% of the variance. The woman in the vignette with straight hair was more likely to be recommended for hire and more educated participants were more likely to recommend hiring. These findings suggest that education may be an important factor in changing the influence of colorism in African American culture and that hair texture may be a factor of colorism that influences hiring of applicants.
Colorism is the intra-racial system of inequality based on skin color, hair texture, and facial features. In the African American culture, colorism has deeply rooted origins that continue to affect the lives of African Americans today. This study examined how colorism effects perceptions of personal characteristics, personal attributes, work ability, and hiring decisions of African American women 18 and older.
Participants for this study consisted of 188 African American women who self-identified as African American/Black and who were over 18 years of age living in the United States. All participants completed a demographic sheet and three instruments: Occupational Work Ethic Inventory (OWEI; Petty, 1995), Personal Attributes Questionnaire (PAQ; Spence, Helmreich, & Stapp, 1974) and Personal Efficacy Beliefs Scale (PEBS; Riggs et al., 1994). They were randomly assigned to one of six vignettes describing a young African American/Black woman applying for a job. She was described as having one of three skin-tones (light, brown, or dark) and having kinky or straight hair.
A multiple analysis of variance (MANOVA) failed to reveal differences in personal characteristics, personal attributes, and work ability due to skin tone or to hair texture. Multiple linear regression analyses revealed that hair texture predicted hiring decision, after controlling for relevant demographic variables. Participant education and vignette hair texture influenced hiring decisions, accounting for 8.2% of the variance. The woman in the vignette with straight hair was more likely to be recommended for hire and more educated participants were more likely to recommend hiring. These findings suggest that education may be an important factor in changing the influence of colorism in African American culture and that hair texture may be a factor of colorism that influences hiring of applicants.
ContributorsHowell, Morgan Saraya (Author) / Robinson-Kurpius, Sharon (Thesis advisor) / Homer, Judith (Committee member) / Randall, Ashley K. (Committee member) / Arizona State University (Publisher)
Created2015
Description
Class D Amplifiers are widely used in portable systems such as mobile phones to achieve high efficiency. The demands of portable electronics for low power consumption to extend battery life and reduce heat dissipation mandate efficient, high-performance audio amplifiers. The high efficiency of Class D amplifiers (CDAs) makes them particularly attractive for portable applications. The Digital class D amplifier is an interesting solution to increase the efficiency of embedded systems. However, this solution is not good enough in terms of PWM stage linearity and power supply rejection. An efficient control is needed to correct the error sources in order to get a high fidelity sound quality in the whole audio range of frequencies. A fundamental analysis on various error sources due to non idealities in the power stage have been discussed here with key focus on Power supply perturbations driving the Power stage of a Class D Audio Amplifier. Two types of closed loop Digital Class D architecture for PSRR improvement have been proposed and modeled. Double sided uniform sampling modulation has been used. One of the architecture uses feedback around the power stage and the second architecture uses feedback into digital domain. Simulation & experimental results confirm that the closed loop PSRR & PS-IMD improve by around 30-40 dB and 25 dB respectively.
ContributorsChakraborty, Bijeta (Author) / Bakkaloglu, Bertan (Thesis advisor) / Garrity, Douglas (Committee member) / Ozev, Sule (Committee member) / Arizona State University (Publisher)
Created2012
Description
In this thesis, a digital input class D audio amplifier system which has the ability
to reject the power supply noise and nonlinearly of the output stage is presented. The main digital class D feed-forward path is using the fully-digital sigma-delta PWM open loop topology. Feedback loop is used to suppress the power supply noise and harmonic distortions. The design is using global foundry 0.18um technology.
Based on simulation, the power supply rejection at 200Hz is about -49dB with
81dB dynamic range and -70dB THD+N. The full scale output power can reach as high as 27mW and still keep minimum -68dB THD+N. The system efficiency at full scale is about 82%.
to reject the power supply noise and nonlinearly of the output stage is presented. The main digital class D feed-forward path is using the fully-digital sigma-delta PWM open loop topology. Feedback loop is used to suppress the power supply noise and harmonic distortions. The design is using global foundry 0.18um technology.
Based on simulation, the power supply rejection at 200Hz is about -49dB with
81dB dynamic range and -70dB THD+N. The full scale output power can reach as high as 27mW and still keep minimum -68dB THD+N. The system efficiency at full scale is about 82%.
ContributorsBai, Jing (Author) / Bakkaloglu, Bertan (Thesis advisor) / Arizona State University (Publisher)
Created2015
Description
Media is a powerful tool used to reflect and affect change in society. Within this study, a brief historical context is provided of roles African Americans in film were traditionally cast in. By employing Critical Race Theory (CRT), cultural capital, and NewBlackMan frameworks, I analyzed how Black male film directors and producers depicted race, class, gender within the Black film boom of the early 2000s. I examined the depictions of educational outcomes of the characters within films utilized in this study. My results display progress that still needs to be made in breaking down traditional gender roles, how race needed to be more critically examined, and how educational outcomes of the characters were not realistic. I also provide suggestions for conducting media studies through the discipline of education in the future.
ContributorsWilliams, Jernine (Author) / Margolis, Eric (Thesis advisor) / Brayboy, Bryan (Committee member) / Sandlin, Jennifer (Committee member) / Arizona State University (Publisher)
Created2010
Description
ABSTRACT Moving beyond Form: Communicating Identity through Dance chronicles the journey of investigating my personal creative process in dance. This was a search for strategies to empower myself creatively, enabling me to move beyond the limitations of a prescribed form or style of dance and communicate ideas that were relevant to me. But on a deeper level, it was an exploration of my capacity to self-define through movement. The challenge led me to graduate school, international study with world-renowned choreographers and to the development of a holistic creative practice, Movement to Meaning. The aim of this creative practice is to express internal awareness through movement, thereby enabling the mover to dance from an internal reference point. In my research, I utilized Movement to Meaning to re-contextualize Sandia, a traditional-based dance that is indigenous to various Mande subgroups in West Africa. This project culminated in a choreographic presentation, Ten For Every Thousand, which was performed in October 2010 at the Nelson Fine Arts Center at Arizona State University in Tempe, Arizona.
ContributorsDavis, Omilade (Author) / Vissicaro, Pegge (Thesis advisor) / Dove, Simon (Committee member) / Sunkett, Mark (Committee member) / Arizona State University (Publisher)
Created2010
Description
This thesis looks at the 1842 Supreme Court ruling of Prigg v. Pennsylvania, the events leading up to this case, and the subsequent legislative fallout from the decision. The Supreme Court rendered this ruling in an effort to clear up confusion regarding the conflict between state and federal law with regard to fugitive slave recovery. Instead, the ambiguities contained within the ruling further complicated the issue of fugitive slave recovery. This complication commenced when certain state legislatures exploited an inadvertent loophole contained in the ruling. Thus, instead of mollifying sectional tension by generating a clear and concise process of fugitive slave recovery, the Supreme Court exacerbated sectional tension. Through an analysis of newspapers, journals, laws and other contemporary sources, this thesis demonstrates that Prigg v. Pennsylvania and the subsequent legislative reactions garnered much attention. Through a review of secondary literature covering this period, a lack of demonstrable coverage of this court case emerges, which shows that scant coverage has been paid to this important episode in antebellum America. Additionally, the lack of attention paid to this court case ignores a critical episode of rising sectional tension during the 1840s.
ContributorsCoughlin, John (Author) / Schermerhorn, Calvin (Thesis advisor) / O'Donnell, Catherine (Thesis advisor) / Whitaker, Matthew (Committee member) / Arizona State University (Publisher)
Created2010
Description
How do Queer Black Women make sense of their experiences within educational settings? How do they engage in space-making? How do educational settings protect Black Queer Women's bodies? Through a series of in-depth interviews with individuals that identify as, are labeled by others as, or previously identified as Queer Black Women, I found that participants understood their lived experiences intersectionality and understood their experiences in educational settings as critical to their self-development. Participants described race, sexuality, and gender as overlapping systems of oppression that negatively affected their experiences within educational settings. Not only did participants experience discrimination due to their race or gender, but also due to their sexuality. This seen and/or invisible identity leads them to experience multiple axes of oppression, not only inflicted by peers and teachers, but also the institutions. The findings have implications for theories of intersectionality and queer of color critique.
ContributorsMelendez-Mayfield, Amina (Author) / Charron-Chenier, Raphael (Thesis advisor) / Lopez, Vera (Committee member) / Garcia, Rocio (Committee member) / Arizona State University (Publisher)
Created2022