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- Creators: Arizona State University
- Creators: Bowers, Nicole
Description
This thesis is concerned with the methodological role of intuitions in metaphysics. It is divided into two main parts. Part I argues that an academic field can only employ a method of gathering evidence if it has established some agreed-upon standards regarding how to evaluate uses of this method. Existing meta-philosophical disputes take the nature of intuitions to be their starting point. This is a mistake. My concern is not the epistemic status of intuitions, but rather how metaphysicians appeal to intuitions as a form of evidence. In order for intuitions to play a viable role in research they must be subject to certain constraints, regardless of whether they allow individual researchers to know that their theories are true. Metaphysicians are not permitted to use intuitions as arbitrarily having different evidential status in different circumstances, nor should they continue to use intuitions as evidence in certain disputes when there is disagreement amongst disputants about whether intuitions should have this evidential status.
Part II is dedicated to showing that metaphysicians currently use intuitions in precisely the sort of inconsistent manner that was shown to be impermissible in Part I. I first consider several competing theories of how intuitions function as evidence and argue that they all fail. As they are currently used in metaphysics, intuitions are analogous to instruments in the sciences in that they are taken to be a substantial non-inferential source of evidence for theories. I then analyze several major metaphysical disputes and show that the source of controversy in these disputes boils down to inconsistencies in how the different parties treat intuitions as evidence. I conclude that metaphysicians must abandon appeals to intuition as evidence--at least until the field can agree upon some general standards that can resolve these inconsistencies.
Part II is dedicated to showing that metaphysicians currently use intuitions in precisely the sort of inconsistent manner that was shown to be impermissible in Part I. I first consider several competing theories of how intuitions function as evidence and argue that they all fail. As they are currently used in metaphysics, intuitions are analogous to instruments in the sciences in that they are taken to be a substantial non-inferential source of evidence for theories. I then analyze several major metaphysical disputes and show that the source of controversy in these disputes boils down to inconsistencies in how the different parties treat intuitions as evidence. I conclude that metaphysicians must abandon appeals to intuition as evidence--at least until the field can agree upon some general standards that can resolve these inconsistencies.
ContributorsMusgrave, Shea (Author) / Creath, Richard (Thesis advisor) / Pinillos, Nestor A. (Committee member) / Kobes, Bernard W. (Committee member) / Arizona State University (Publisher)
Created2014
Description
The space environment comprises cosmic ray particles, heavy ions and high energy electrons and protons. Microelectronic circuits used in space applications such as satellites and space stations are prone to upsets induced by these particles. With transistor dimensions shrinking due to continued scaling, terrestrial integrated circuits are also increasingly susceptible to radiation upsets. Hence radiation hardening is a requirement for microelectronic circuits used in both space and terrestrial applications.
This work begins by exploring the different radiation hardened flip-flops that have been proposed in the literature and classifies them based on the different hardening techniques.
A reduced power delay element for the temporal hardening of sequential digital circuits is presented. The delay element single event transient tolerance is demonstrated by simulations using it in a radiation hardened by design master slave flip-flop (FF). Using the proposed delay element saves up to 25% total FF power at 50% activity factor. The delay element is used in the implementation of an 8-bit, 8051 designed in the TSMC 130 nm bulk CMOS.
A single impinging ionizing radiation particle is increasingly likely to upset multiple circuit nodes and produce logic transients that contribute to the soft error rate in most modern scaled process technologies. The design of flip-flops is made more difficult with increasing multi-node charge collection, which requires that charge storage and other sensitive nodes be separated so that one impinging radiation particle does not affect redundant nodes simultaneously. We describe a correct-by-construction design methodology to determine a-priori which hardened FF nodes must be separated, as well as a general interleaving scheme to achieve this separation. We apply the methodology to radiation hardened flip-flops and demonstrate optimal circuit physical organization for protection against multi-node charge collection.
Finally, the methodology is utilized to provide critical node separation for a new hardened flip-flop design that reduces the power and area by 31% and 35% respectively compared to a temporal FF with similar hardness. The hardness is verified and compared to other published designs via the proposed systematic simulation approach that comprehends multiple node charge collection and tests resiliency to upsets at all internal and input nodes. Comparison of the hardness, as measured by estimated upset cross-section, is made to other published designs. Additionally, the importance of specific circuit design aspects to achieving hardness is shown.
This work begins by exploring the different radiation hardened flip-flops that have been proposed in the literature and classifies them based on the different hardening techniques.
A reduced power delay element for the temporal hardening of sequential digital circuits is presented. The delay element single event transient tolerance is demonstrated by simulations using it in a radiation hardened by design master slave flip-flop (FF). Using the proposed delay element saves up to 25% total FF power at 50% activity factor. The delay element is used in the implementation of an 8-bit, 8051 designed in the TSMC 130 nm bulk CMOS.
A single impinging ionizing radiation particle is increasingly likely to upset multiple circuit nodes and produce logic transients that contribute to the soft error rate in most modern scaled process technologies. The design of flip-flops is made more difficult with increasing multi-node charge collection, which requires that charge storage and other sensitive nodes be separated so that one impinging radiation particle does not affect redundant nodes simultaneously. We describe a correct-by-construction design methodology to determine a-priori which hardened FF nodes must be separated, as well as a general interleaving scheme to achieve this separation. We apply the methodology to radiation hardened flip-flops and demonstrate optimal circuit physical organization for protection against multi-node charge collection.
Finally, the methodology is utilized to provide critical node separation for a new hardened flip-flop design that reduces the power and area by 31% and 35% respectively compared to a temporal FF with similar hardness. The hardness is verified and compared to other published designs via the proposed systematic simulation approach that comprehends multiple node charge collection and tests resiliency to upsets at all internal and input nodes. Comparison of the hardness, as measured by estimated upset cross-section, is made to other published designs. Additionally, the importance of specific circuit design aspects to achieving hardness is shown.
ContributorsShambhulingaiah, Sandeep (Author) / Clark, Lawrence (Thesis advisor) / Holbert, Keith E. (Committee member) / Seo, Jae sun (Committee member) / Allee, David (Committee member) / Arizona State University (Publisher)
Created2015
Description
I began this thesis because I was confused about economics. I wondered why there were so many different models. I didn't understand how they fit together. I was also confused by the assumptions being made. For instance, the assumption that humans are rational utility-maximizers did not seem to agree with my own experiences. With my director Dr. Edward Schlee's help, my thesis has become an inquiry into the state of economic methodology, both in theory and in practice. The questions that drive this paper are: How do economists choose between theories? What is the purpose of economic theory? What is the role of empirical data in assessing models? What role do assumptions play in theory evaluation, and should assumptions make sense? Part I: Methodology is the theoretical portion of the paper. I summarize the essential arguments of the two main schools of thought in economic methodology, and argue for an updated methodology. In Part II: A case study: The expected utility hypothesis, I examine methodology in practice by assessing a handful of studies that seek to test the expected utility hypothesis. Interestingly, I find that there is a different between what economists say they are doing, and what they actually seem to be doing. Throughout this paper, I restrict my analysis to microeconomic theory, simply because this is the area with which I am more familiar. I intend this paper to be a guide for my fellow students and rising economists, as well as for already practicing economists. I hope it helps the reader better understand methodology and improve her own practice.
ContributorsKang, Dominique (Author) / Schlee, Edward (Thesis director) / Schoellman, Todd (Committee member) / Boerner, Rochus (Committee member) / Barrett, The Honors College (Contributor)
Created2013-05
Description
Increasing numbers of biomedical products have become eligible for over-the-counter sale in contemporary American consumer culture. What was once the realm of the clinical has moved into the realm of the domestic, with the consumer as the interpreter of health issues and communication. This dissertation examines the user experience with the marketing and design of packaging of home pregnancy tests. Studies indicate that more than one-third of women of reproductive age in the U.S. have used a home pregnancy test, yet the test is marketed to a specific demographic of user: one who is white, affluent, and married. How are users’ experiences affected, and how do different methodological frameworks yield results for the study of these user experiences?
In this project, I conduct a series of methodological case studies to show how each reveal various aspects of the user experience of home pregnancy testing. I begin with a case study of three brands of home pregnancy tests, using visual-material rhetorical analysis to uncover the cultural values implicit in packaging. I then move to two case studies involving the results of a National Institutes of Health survey of pregnancy test users. I employ a thematic analysis framework to analyze demographic information about users and to contextualize their narratives. I also conduct corpus linguistics and semantic network analysis with the same data set to model patterns in language. From these varying approaches, each with different underlying assumptions, nuanced aspects of the user experience with the product and its communication emerge. For example, the user’s life circumstances change from initial to subsequent pregnancy test purchase and use so as to suggest more desire for a positive result with subsequent testing, yet many users across these categories express some degree of discomfort when purchasing this product.
I conclude with suggestions based on this research for more ethically informed pregnancy test marketing, and outline avenues for future research for evaluation of home pregnancy test user experience. I finally discuss the implications of multiple methodological approaches for transdisciplinary humanities project design, implementation, and evaluation, with emphasis on the digital and medical humanities.
In this project, I conduct a series of methodological case studies to show how each reveal various aspects of the user experience of home pregnancy testing. I begin with a case study of three brands of home pregnancy tests, using visual-material rhetorical analysis to uncover the cultural values implicit in packaging. I then move to two case studies involving the results of a National Institutes of Health survey of pregnancy test users. I employ a thematic analysis framework to analyze demographic information about users and to contextualize their narratives. I also conduct corpus linguistics and semantic network analysis with the same data set to model patterns in language. From these varying approaches, each with different underlying assumptions, nuanced aspects of the user experience with the product and its communication emerge. For example, the user’s life circumstances change from initial to subsequent pregnancy test purchase and use so as to suggest more desire for a positive result with subsequent testing, yet many users across these categories express some degree of discomfort when purchasing this product.
I conclude with suggestions based on this research for more ethically informed pregnancy test marketing, and outline avenues for future research for evaluation of home pregnancy test user experience. I finally discuss the implications of multiple methodological approaches for transdisciplinary humanities project design, implementation, and evaluation, with emphasis on the digital and medical humanities.
ContributorsOpel, Dawn S (Author) / Goggin, Maureen Daly (Thesis advisor) / Daer, Alice R (Committee member) / Wernimont, Jacqueline (Committee member) / Arizona State University (Publisher)
Created2015
Description
Law and science are fundamental to the operation of racism in the United States. Law provides structure to maintain and enforce social hierarchies, while science ensures that these hierarchies are given the guise of truth. Biologists and geneticists have used race in physical sciences to justify social differences, while criminologists, sociologists, and other social scientists use race, and Blackness in particular, as an explain-all for criminality, poverty, or other conditions affecting racialized peoples. Social and physical sciences profoundly impact conceptualizations and constructions of race in society, while juridical bodies give racial science the force of law—placing legal benefits and criminal punishments into play. Yet, no formal rules govern the use of empirical data in opinions of the Supreme Court. My dissertation therefore studies the Court’s use of social scientific evidence in two key cases involving race and discrimination to identify what, if any, social scientific standards the Court has developed for its own analysis of scientific evidence. In so doing, I draw on Critical Race Theory (CRT) and Institutional Ethnography (IE) to develop a methodological framework for the study and use of social sciences in the law. Critical Race scholars generally argue that race is a social and legal construct and racism is endemic, and permanent, while Institutional Ethnography provides a social scientific method for rigorous study of the law by mapping and illuminating relationships of power manifested in social institutions that construct consciousness and place for marginalized groups in society. Combining methods of IE with epistemologies of CRT, I propose Critical Race Methodologies in the study of Fisher v. University of Texas at Austin and Texas Department of Housing and Community Affairs v. The Inclusive Communities Project, Inc. These two cases from recent terms of the Supreme Court involve heavy use of social sciences in briefing and at oral argument, and both cases set standards for racial inclusiveness in Texas. Throughout this dissertation, I look at how law and social sciences co-construct racial meanings and racial power, and how law and social science understand and misunderstand one another in attempting to scientifically understand the role of race in the United States.
ContributorsChin, Jeremiah Augustus (Author) / Brayboy, Bryan McK.J. (Thesis advisor) / Tsosie, Rebecca (Committee member) / Gomez, Alan (Committee member) / Arizona State University (Publisher)
Created2017
Description
Network analysis is a key conceptual orientation and analytical tool in the social sciences that emphasizes the embeddedness of individual behavior within a larger web of social relations. The network approach is used to better understand the cause and consequence of social interactions which cannot be treated as independent. The relational nature of network data and models, however, amplify the methodological concerns associated with inaccurate or missing data. This dissertation addresses such concerns via three projects. As a motivating substantive example, Project 1 examines factors associated with the selection of interaction partners by students at a large urban high school implementing a reform which, like many organizational improvement initiatives, is associated with a theory of change that posits changes to the structuring of social interactions as a central causal pathway to improved outcomes. A distinctive aspect of the data used in Project 1 is that it was a complete egocentric network census – in addition to being asked about their own relationships, students were asked about the relationships between alters that they nominated in the self-report. This enables two unique examinations of methodological challenges in network survey data collection: Project 2 examines the factors related to how well survey respondents assess the strength of social connections between others, finding that "informant" competence corresponds positively with their social proximity to target dyad as well as their centrality in the network. Project 3 explores using such third-party reports to augment network imputation methods, and finds that incorporating third-party reports into model-based methods provides a significant boost in imputation accuracy. Together these findings provide important implications for collecting and extrapolating data in research contexts where a complete social network census is highly desirable but infeasible.
ContributorsBates, Jordan T (Author) / Maroulis, Spiro J (Thesis advisor) / Kang, Yun (Thesis advisor) / Frank, Kenneth A. (Committee member) / Arizona State University (Publisher)
Created2019
Description
In this three-article dissertation, I explore how ten Palestinian fifth and sixth-grade students perceive and engage with science, technology, engineering, mathematics, and art (STEAM) activities within an out-of-school context. I collaborated with a local organization, Al-Roward for Science and Technology which developed the programming for the four-day program (about 2 hours each day). Each day of the program students completed a hands-on science activity that integrated technology, engineering, mathematics, and art. Under a sociocultural and political lens, I study learners’ perceptions of their engagement with transdisciplinary STEAM, examine shifts in learners’ self-efficacy, and analyze moment-to-moment interactions of learners as they engage in the learning setting.Across each chapter I used a different method to examine students’ perceptions and engagement. In the first chapter I examine students’ perceptions using an interview instrument to understand ways students conceptualize their experiences with STEAM. Findings show that students have varied ways of describing their perceptions, such as normative views about STEAM and values that shape their experience. In the second chapter, I use a mixed-methods design to explore if and how students’ self-efficacy shifts as an outcome of participating in the program. The findings demonstrated that students’ conceptualization of science varied between instruments. In the third chapter, focusing on the case of one learner, I examine moment-to-moment interactions with peers, educators, and materials as the student navigates his learning trajectory during the third day of the program. Findings show varied ways in which the learner enacted self-determination across the learning activities to assert his positionalities, engage with others, interact with the educators, and use materials.
In doing this analysis of students' experiences in transdisciplinary STEAM, this dissertation contributes to the ongoing research of sociocultural and political dimensions of learning, examining learning as a complex phenomenon. In addition, this work contributes to critical STEAM education that examines science learning and practices while taking into consideration that learning is a relational and ethical process. Implications for future research on learning, methodological approaches in the learning sciences, and critical STEAM pedagogy are considered.
ContributorsMawasi, Areej (Author) / Wylie, Ruth R (Thesis advisor) / Gee, Elisabeth E (Thesis advisor) / Roscoe, Rod R (Committee member) / Vossoughi, Shirin S (Committee member) / Arizona State University (Publisher)
Created2021
Description
This dissertation deals with the confluence of neoliberal and dominant Western social pressures in tension with researchers and educators striving toward a more sustainable world in light of the Anthropocene. Although scientists see the Anthropocene as a problem of human activity and environmental degradation, many social scientists and humanities researchers also see it as a problem with entrenched ways of thought. Current ways of thought complicit in the making of the Anthropocene include centering all thought, control, and agency in the radically individual human, centering science as the only legitimate access to knowledge, and presenting that knowledge as apolitical absolute truth. I engage in research creation activated by the minor gestures of human/nature entanglement in the Anthropocene and the promise of place in environmental and sustainability education. As such, I embark on the invention of a new ecology of practices that takes the process philosophy of Alfred North Whitehead as their guiding foundation. As part of this invention circumventing normative neoliberal and Western logics, I take Ajo, Arizona and the surrounding Sonoran Desert as a partner in more-than-human process inquiry. I live in Ajo and explore the Sonoran Desert for four months of data generation employing basic techniques of ethnography divorced from their neopositivist founding theories.
Bodies generated from my entanglement with Ajo and the desert participate in inventing Remixing Data Experiences (RDE), a novel data engagement technique. Through RDE, my more-than-human partners and I create ideas by engaging in arts-based techniques that form multimedia art-workings. The ideas generated include Oasis, Decline, Celebrate, Precarity, and Directions. I respond to each idea through anarchival written texts in a variety of genres including ethnographic memoir, short fiction, essay, ballad, and talk poem. I put these ideas into conversation with current methodological and education literature to illustrate that aesthetic-based inquiry contributes new ways forward in the Anthropocene. These new ways include rhythms of certainty and uncertainty in knowledge creation, participating in reciprocal affective capabilities of bodies in joyful knowing, developing modest abstractions that frequently engage concrete experience, and inclusion of aesthetic experiences in learning and inquiry.
ContributorsBowers, Nicole (Author) / Carlson, David L (Thesis advisor) / Koro, Mirka (Committee member) / Jordan, Michelle (Committee member) / Arizona State University (Publisher)
Created2021
Description
This multimodal study brought an open, constructively critical challenge to the standard means of process in, and knowledge production from, qualitative inquiry. Using as a context, dyslexia, and the assistive technology lifeworlds of postsecondary students, this study co-partnered with six college students with dyslexia. Co-partnership allowed for an emergence of new awareness that the experience of dyslexia and assistive technology is mediated through innumerable dynamics of interactions with and through the world. Methodologically, the study suggested that it is possible to: (a) situate, center, and validate disability throughout all phases of qualitative inquiry; (b) make the discrete parts of action research more inclusive of disability; (c) reduce physical and intellectual access barriers to qualitative inquiry; and (d) regard as reasonable and rigorous research that is produced by bodies and minds that may not process information in typical ways. Emancipatory action research was used to thread together an understanding of the complexities of self, being, and reality for a marginalized group and how systems, structures, interactions, spaces, and language are superimposed on experiences of disability. The emancipatory spirited study allowed space for co-constructed meaning making through dynamic multimodalities of method including audio-visual data co-constructed through narrative storytelling; an analysis through deep listening and video editing – illuminating ‘bright spots’ in the broader lifeworld perspective of dyslexia and assistive technology. The innovative co-constructed products of the dissertation were a 2-hour film, a researcher reflection video, professional development guides for assistive technology and qualitative inquiry, and a methods chapter as part of an edited book prospectus. By engaging with this study, the audience will experience consciousness raising with respect to disability experience and witness a reclaiming of the voice of that experience through inclusive research. This study offers a transformative perspective for future work by inviting critical consideration and co-construction of meaning of an expanded conceptualization of assistive technology as an embodied, negotiated experience; and increases awareness that diverse bodyminds offer powerful narratives of diversity in the human condition and why that matters. .
ContributorsBunch, Jacob Colby (Author) / Graves-Wolf, Leigh (Thesis advisor) / Bowers, Nicole (Thesis advisor) / Harrop, Lance (Committee member) / Nusbaum, Emily A. (Committee member) / Arizona State University (Publisher)
Created2023