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- Genre: Masters Thesis
- Creators: Arizona State University
- Creators: Chakraborty, Bijeta
- Member of: ASU Electronic Theses and Dissertations
Description
Oral history methodologies are used to conduct fifteen interviews with Martha Akesi Ndaarko Sennie-Tumi over the course of three months. Research responded to the following questions: How do African women defy master narratives? When do African women defy master narratives and move from the margins to the center? What roles do African women take on to defy master narratives and why? To what extent does the concept of malezile (women who stand firm) address human rights? Twelve stories of defiance (three of which are folktales) are analyzed for recurring themes, concepts and motifs. Research showed that African women defy master narratives when the system worked to their detriment through the Nana Esi archetype. The stories also showed that women adopt nontraditional roles during defiance by using whatever means available to them at the time of defiance.
ContributorsEssuman, Portia Nana (Author) / Anokye, Akua D (Thesis advisor) / Elenes, Alajandra C (Committee member) / Cuadraz, Gloria (Committee member) / Arizona State University (Publisher)
Created2012
Description
This thesis focuses on justice, human rights, and migration in Iraq. It explores the ideas of justice and human rights, and how they influence the migration of the Iraqi Assyrians and Chaldeans. Through the use of qualitative methodology, including a review of scholarly literature, personal experience, and semi-formal interviews with ten individuals, this research mainly focuses on the influence that justice and human rights had on migration during the U.S.-Iraq War, from 2003 until 2011. Justice, human rights, and migration before and after the War are examined. The study concludes that justice and human rights are factors that influence the migration of Iraq's Assyrian and Chaldean community throughout the U.S.-Iraq War; however justice and human rights are not the only factors.
ContributorsBiya, Diana (Author) / Romero, Mary (Thesis advisor) / Ali, Souad T. (Thesis advisor) / El Hamel, Chouki (Committee member) / Arizona State University (Publisher)
Created2014
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
ABSTRACT As a response to the banning of Ethnic Studies in the Tucson Unified School district and other oppressing forces within the movement the students fighting HB 2281 created a Sacred Xicana Space. In this thesis I will examine the role that protest art has in the fight against HB2281. I will also analyze its role in cultural expression, identity and representation. The research question guiding this research is What role does protest art have in social justice? Specifically I will analyze the cultural production of protest art against HB 2281, the ethnic studies ban in Tucson Arizona, and its role in cultural expression, identity and representation.
ContributorsArmendariz, Martha (Author) / Elenes, Alejandara C (Thesis advisor) / Téllez, Michelle (Committee member) / Pope Duarte, Stella (Committee member) / Elenes, Alejandra C (Committee member) / Arizona State University (Publisher)
Created2014
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
The current immigration flow to the United States from Mexico has been polarized by politicians and anti-immigration groups, with a rhetoric that immigrants are a danger to the sovereignty of the country and an economic burden. These accusations ignore the role played by trade agreements in causing such migration patterns by displacing Mexican migrants and how U.S. immigration policies subsequently condemn these economically displaced migrants into illegality. This thesis examines the role national governments and laws of both the United States and Mexico play in formalizing the undocumented flow and the contestation of these economic migrants. I challenge the contemporary view of trade agreements as pull factors by showing how they also function as problematic push factors of migration through displacing Mexicans from their land and any meaningful form of economic security. Once displaced, these communities seek opportunities by migrating to the U.S., where they cross into illegality. Together, examining displacement and subsequent illegality, this thesis reveals the problematic, yet hidden role played by trade agreements in Mexican migration to the U.S. and gaps in current U.S. immigration laws that has preserved the injustices created when neoliberal economic policies and immigration politics provide no protection to impacted indigenous communities.
ContributorsValenzuela, Cinthia (Author) / Colbern, Allan (Thesis advisor) / Comstock, Audrey (Committee member) / Elenes, C Alejandra (Committee member) / Arizona State University (Publisher)
Created2019
Description
ABSTRACT
Elite experience and careers in judged female sports complicate the binary categories of retirement while they are especially exposed to cultures of abuse, pressure and subjectivity. This thesis is comprised of multiple voices and experiences from the elite female athletic perspective, including my autoethnographic narrative. Highlighted and discussed are the topics of sexual assault and abuse, family pressure on children to do and excel at sport, the National Team experience representing the United States and subjected bodies and judging. It is an aim of this thesis to culminate all of those factors in the final chapter and hold that the experience and the cultures of athletic identity within synchronized swimming, gymnastics and figure skating not only cannot be explained by current research on athletic identity through retirement but have the capability to retire undeveloped young women by overdeveloped athletic identities. Through a sampling of voices and experiences across different female judged sports, over three decades, the reader will observe similarities that cause these sports to have a culture of solidarity through the aspects they hold in common with each other. The narrative highlights pivotal moments in the lives of the elite female athlete within these sports, which add to the calculation of their athletic identities and the lack of their personal identities. Through reflection and analyses of not only my story, but the interviewees from my original research and that of Joan Ryan’s as well, I aim to voice a mutual experience of elite athletes. Consisting of multiple factors throughout many years we will see through my autoethnography, paralleling with other voices and experiences, how it all intersects and contributes to this: Who am I now and where do I go from here?
Elite experience and careers in judged female sports complicate the binary categories of retirement while they are especially exposed to cultures of abuse, pressure and subjectivity. This thesis is comprised of multiple voices and experiences from the elite female athletic perspective, including my autoethnographic narrative. Highlighted and discussed are the topics of sexual assault and abuse, family pressure on children to do and excel at sport, the National Team experience representing the United States and subjected bodies and judging. It is an aim of this thesis to culminate all of those factors in the final chapter and hold that the experience and the cultures of athletic identity within synchronized swimming, gymnastics and figure skating not only cannot be explained by current research on athletic identity through retirement but have the capability to retire undeveloped young women by overdeveloped athletic identities. Through a sampling of voices and experiences across different female judged sports, over three decades, the reader will observe similarities that cause these sports to have a culture of solidarity through the aspects they hold in common with each other. The narrative highlights pivotal moments in the lives of the elite female athlete within these sports, which add to the calculation of their athletic identities and the lack of their personal identities. Through reflection and analyses of not only my story, but the interviewees from my original research and that of Joan Ryan’s as well, I aim to voice a mutual experience of elite athletes. Consisting of multiple factors throughout many years we will see through my autoethnography, paralleling with other voices and experiences, how it all intersects and contributes to this: Who am I now and where do I go from here?
ContributorsHaylor, Alyson (Author) / Colbern, Allan (Thesis advisor) / Mean, Lindsey (Committee member) / Kassing, Jeffrey (Committee member) / Arizona State University (Publisher)
Created2019
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
Protracted Refugee Situations (PRS) are of serious concern due to their adverse impacts on human rights and stability in host countries. This thesis profiles three, so-called, durable solutions for refugees: local integration, third country resettlement, and voluntary repatriation. However, refugees living in PRS are not given any durable solutions, and they remain confined to refugee camps while the conflicts that forced them from their homelands continue. Refugees usually find themselves in PRS as a result of the restrictive policies of the country in which they have sought refuge. These conditions not only deprive refugees of basic human rights, but act as catalysts for political violence, insurgency, and radicalization. This thesis examines, in detail, one such case: Nahr al-Bared, a Palestinian refugee camp in Lebanon where refugees have been living in PRS for decades due to stringent refugee policies that contributed to violent clashes that took place in May 2007. The denial of human rights for Palestinians in Lebanon has effectively marginalized already disempowered refugee populations, thereby increasing the likelihood of instability and radicalization. The denial of rights, a lack of opportunities, and confinement to the poor conditions of the refugee camp, are driving forces of political violence and militant rhetoric. This situation can endanger the refugee host country as well as the refugees, who are civilians in need of international protection. Therefore, there is a strong connection between the inclusion of rights for refugee populations in a host country, and peace and security. The case of Palestinians in Lebanon is examined as a microcosm of the notion that human rights and state security are interdependent. Recognition of this interdependence necessitates a paradigm shift in perspectives and policies of international refugee protection and state security, from regarding PRS as an indefinite state of emergency to be contained, to acknowledgment that the indefinite duty to protect refugees in protracted situations simultaneously serves the host country's security concerns.
ContributorsBeydoun, Rema-Therese (Author) / Klimek, Barbara (Thesis advisor) / Casper, Monica (Committee member) / Koptiuch, Kristin (Committee member) / Arizona State University (Publisher)
Created2010
Description
The asylum seeking process in the United States is arbitrary in nature, many aspects of which have been well documented. The legal process rests the burden of proof upon the asylum seeker to demonstrate he or she is truly fleeing persecution to a legal system where asylum seekers are not eligible for free representation. This contributes to a lower rate of success and an uncertain future, due to the limited or no access to employment, education, and health benefits, within the country in which they seek asylum. However, the academic literature pertaining to the repatriation process of the failed asylum seeker in the United States remains relatively unexplored. Consequently, the true failure rate remains unknown. This paper contends that genuine asylum seekers may fall through the cracks, unable to show evidence of their persecution. Thus, repatriations result in a dual victimization of the failed asylum seeker resulting in situations where a genuine case can be exposed to the very same dangers he or she fled in the first place. This is a grave violation of their human rights and the principle of Non-refoulement.
Therefore, this paper argues the theory of the Marginalized Other in Human Rights Law (Simmons 2011) can be extended to the repatriations process of failed asylum seekers in the United States. Using secondary data and reports this thesis breaks down the repatriations process into three components in order to demonstrate how the failed asylum seeker is treated as a Marginalized Other during each point of contact. By addressing the victimization that occurs during the repatriations process this paper concludes the threat posed to the human rights of failed asylum seekers can be minimized.
Therefore, this paper argues the theory of the Marginalized Other in Human Rights Law (Simmons 2011) can be extended to the repatriations process of failed asylum seekers in the United States. Using secondary data and reports this thesis breaks down the repatriations process into three components in order to demonstrate how the failed asylum seeker is treated as a Marginalized Other during each point of contact. By addressing the victimization that occurs during the repatriations process this paper concludes the threat posed to the human rights of failed asylum seekers can be minimized.
ContributorsWeerawardena, Sachini Ruwangee (Author) / Cruz, Evelyn H. (Thesis advisor) / Klimek, Barbara (Committee member) / Murphy Erfani, Julie (Committee member) / Forrest, Michael (Committee member) / Arizona State University (Publisher)
Created2016