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- All Subjects: Communication
- All Subjects: Chemistry
- Creators: Arizona State University
- Status: Published
Description
Scholars have attended to paradoxes inherent in wider public discourse where subordinated groups most affected by laws and sanctions have the least political, material, and rhetorical capital to speak back to them. Such scholarship often focuses either on the subordinated status of a group or the work of subordinated groups going public as part of a collective mass movement for social change. In doing so, scholarship risks undermining the agency of subordinated rhetors or treating mass-movement rhetoric as somehow both exceptional and yet necessary for enacting cultural citizenship. What is less frequently studied is the agency that local publics demonstrate through their tenacious organizational decision-making in the face of political, material, and rhetorical sanctions.
In response to this gap, this project features the Puente Movement, a mixed-documentation-status grassroots organization in Phoenix, AZ. Specifically, I’ve analyzed this organization’s public efforts from April 23rd, 2010 to September 6th, 2012 to oppose Senate Bill 1070—a state-specific measure to stop undocumented immigration across the Mexico/Arizona border and deport current undocumented residents. I situate the study in the larger context of Latino cultural citizenship. Combining a critical-incident interview technique and a rhetorically informed decision-making framework, I analyze Puente’s active construction and public circulation of argumentative appeals in relation to their decision-making that attempted to leverage Puente’s identity and membership to serve its constituents and to continue to direct wider public attention to SB 1070. Using a five-part framework to assess potential risks and benefits, the study documents the complexity of this decision-making. For instance, the study shows how Puente’s strategy of Barrio Defense Committees negotiated the tension between protecting the identification of local residents and publically protesting the injustices of immigration sanctions. It also highlights how a strategy to use member’s undocumented status as a point of publicity actively engaged tensions between the narratives Puente members wanted to present to the public about undocumented people and the images otherwise circulated. Behind these strategies and others like them is Puente’s persistent effort to re-frame immigration controversy. Findings are relevant to the study of Latino/a social movements, public-spheres scholarship, and action-research with subordinated rhetors.
In response to this gap, this project features the Puente Movement, a mixed-documentation-status grassroots organization in Phoenix, AZ. Specifically, I’ve analyzed this organization’s public efforts from April 23rd, 2010 to September 6th, 2012 to oppose Senate Bill 1070—a state-specific measure to stop undocumented immigration across the Mexico/Arizona border and deport current undocumented residents. I situate the study in the larger context of Latino cultural citizenship. Combining a critical-incident interview technique and a rhetorically informed decision-making framework, I analyze Puente’s active construction and public circulation of argumentative appeals in relation to their decision-making that attempted to leverage Puente’s identity and membership to serve its constituents and to continue to direct wider public attention to SB 1070. Using a five-part framework to assess potential risks and benefits, the study documents the complexity of this decision-making. For instance, the study shows how Puente’s strategy of Barrio Defense Committees negotiated the tension between protecting the identification of local residents and publically protesting the injustices of immigration sanctions. It also highlights how a strategy to use member’s undocumented status as a point of publicity actively engaged tensions between the narratives Puente members wanted to present to the public about undocumented people and the images otherwise circulated. Behind these strategies and others like them is Puente’s persistent effort to re-frame immigration controversy. Findings are relevant to the study of Latino/a social movements, public-spheres scholarship, and action-research with subordinated rhetors.
ContributorsOliver, Veronica (Author) / Long, Elenore (Committee member) / Miller, Keith (Committee member) / Bebout, Lee (Committee member) / Arizona State University (Publisher)
Created2015
Description
This study applies Relational Dialectic Theory to analyze the stepparent and stepchild relationship of one family. The data is documented in an autoethnography. Autoethnography is an approach to data collection in which the researcher’s own experience is the source of data, and the experience is studied to deepen understandings of social reality. This study highlights the complexity of the stepparent-stepchild relationship, the uncertainty surrounding the stepparent role, and identifies the dialectic tensions that exist within the stepparent-stepchild relationship. The dialectics identified by this study include: emotional-closeness-distance, past-present, autonomy connection, and parent-friend. The findings related to how these dialectic tensions emerge and are managed within stepparent-stepchild relationships have implications for stepparents and spouses of stepparents and for new parents and parents in traditional family structures.
ContributorsRoush, Krysti (Author) / Mean, Lindsay A (Thesis advisor) / Gaffney, Cynthia (Committee member) / Waldron, Vincent (Committee member) / Arizona State University (Publisher)
Created2015
Description
Circular Dichroism (CD) and electron paramagnetic resonance (EPR) were used to investigate the metal-binding sites of five different four-helix bundles, which have slight differences in the population of their side chains. Of the four-helix bundles, three have central dinuclear metal binding sites; two of these three also have outer dinuclear metal binding sites. The other two peptides have two identical, non-central, dinuclear metal binding sites. The CD spectra showed changes in the secondary structure of the peptides, and X-band EPR spectra of these peptides revealed the unique four peak signal of Cu(II). These findings improve our understanding of the metal binding environments of these peptides.
ContributorsCanarie, Elizabeth Rose (Author) / Allen, James (Thesis director) / Wolf, George (Committee member) / School of Mathematical and Statistical Sciences (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
A lack of public trust in governance institutions such as governments, federal agencies, and public health organizations limits national capacities to mitigate climate-related risks. Trustworthy sources of risk information are theorized to be more persuasive and more likely to motivate adaptive behaviors. Accordingly, this dissertation addresses relational and translational challenges of risk communication to support public health and safety by making climate science more accessible to communities at risk from extreme heat. This project developed and applied a theory-driven model of trust determination to understand how United States residents evaluate the trustworthiness of state governments and emergency management agencies. Using confirmatory factor analysis, a two-factor model of trustworthiness as self-reliability and source reliability was strongly empirically supported. This measurement model of trustworthiness was translated into experimental trustworthiness manipulations capable of creating statistically significant differences in perceptions of source reliability. The dissertation then tested the persuasive efficacy of trust-building risk messaging using randomized controlled trials, finding that when controlling for political ideology, message trust condition had a significant effect on attitudes toward extreme heat risk and preparedness as well as intentions to prepare for extreme heat events. Practical and theoretical implications are discussed.
ContributorsMattson, LD (Author) / Adame, Bradley (Thesis advisor) / Corman, Steven R (Committee member) / Eakin, Hallie (Committee member) / Arizona State University (Publisher)
Created2024
Description
Additive manufacturing (AM) gathers increasing attention for its customization and sustainability benefits, including material efficiency, lightweighting, and energy conservation. This dissertation explores innovative strategies for 3D printing elastomers using vat photopolymerization (VP) and direct ink writing (DIW). The first study introduces a strategy for incorporating high molecular weight isoprene rubber latexes into VP to address the challenges of processing elastomers. The addition of water-soluble monomers and crosslinkers to the latex aqueous phase yielded a photocurable, low-viscosity precursor suitable for VP. Photopolymerization in the aqueous phase created a hydrogel scaffold surrounding the polymeric particles, solidifying the latex into a green body. Post-processing removed water, driving the coalescence of isoprene rubber particles and resulting in a semi-interpenetrating polymepost-processing) with exceptional elongation at break up to 600%. Expanding on this, VP of sulfonated ethylene-propylene-diene monomer (sEPDM) latex demonstrated the 3D printing of olefinic elastomers. The sEPDM formed a physically crosslinked network due to ionic aggregation, leading to an interpenetrating polymer network (IPN) with tunable mechanical properties after sEPDM particles coalesced throughout the scaffold network during the post processing of printed green body. The introduction of polymerizable counterions for sulfonate groups at the sEPDM particle interfaces created a novel photocuring mechanism for latexes. The copolymerization of monomer added in the aqueous phase and 2-(Dimethylamino)ethyl methacrylate (DMAEMA) at the sEPDM particles generated a physically crosslinked hydrogel network through the ionic association on the latex particle interfaces. The absence of covalent crosslinked network highlighted the potential of 3D printing reprocessable materials. The last two projects utilized hybrid colloids composed of inorganic nanoparticles and styrene-butadiene rubber (SBR) particles for the 3D printing of polymer composites. The mixture of silica nanoparticle colloid and SBR latex demonstrated shear yield-stress behavior, enabling DIW. The modification of silica nanoparticle surface functionalities tuned the interaction between the silica and the polymer matrix, influencing the material mechanical properties. Electrically conductive fillers, single-wall carbon nanotubes (SWCNTs), were applied in SBR hybrid colloids to demonstrate VP of SWCNT-SBR composites. The results revealed enhanced electrical conductivity of the composites with increased SWCNT content, demonstrating the potential application of 3D printing elastomeric conductive materials.
ContributorsWen, Jianheng (Author) / Long, Timothy E (Thesis advisor) / Jin, Kailong (Committee member) / Sample, Caitlin S (Committee member) / Arizona State University (Publisher)
Created2024