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Achievement of many long-term goals requires sustained practice over long durations. Examples include goals related to areas of high personal and societal benefit, such as physical fitness, which requires a practice of frequent exercise; self-education, which requires a practice of frequent study; or personal productivity, which requires a practice of

Achievement of many long-term goals requires sustained practice over long durations. Examples include goals related to areas of high personal and societal benefit, such as physical fitness, which requires a practice of frequent exercise; self-education, which requires a practice of frequent study; or personal productivity, which requires a practice of performing work. Maintaining these practices can be difficult, because even though obvious benefits come with achieving these goals, an individual's willpower may not always be sufficient to sustain the required effort. This dissertation advocates addressing this problem by designing novel interfaces that provide people with new practices that are fun and enjoyable, thereby reducing the need for users to draw upon willpower when pursuing these long-term goals. To draw volitional usage, these practice-oriented interfaces can integrate key characteristics of existing activities, such as music-making and other hobbies, that are already known to draw voluntary participation over long durations. This dissertation makes several key contributions to provide designers with the necessary tools to create practice-oriented interfaces. First, it consolidates and synthesizes key ideas from fields such as activity theory, self-determination theory, HCI design, and serious leisure. It also provides a new conceptual framework consisting of heuristics for designing systems that draw new users, plus heuristics for making systems that will continue drawing usage from existing users over time. These heuristics serve as a collection of useful ideas to consider when analyzing or designing systems, and this dissertation postulates that if designers build these characteristics into their products, the resulting systems will draw more volitional usage. To demonstrate the framework's usefulness as an analytical tool, it is applied as a set of analytical lenses upon three previously-existing experiential media systems. To demonstrate its usefulness as a design tool, the framework is used as a guide in the development of an experiential media system called pdMusic. This system is installed at public events for user studies, and the study results provide qualitative support for many framework heuristics. Lastly, this dissertation makes recommendations to scholars and designers on potential future ways to examine the topic of volitional usage.
ContributorsWallis, Isaac (Author) / Ingalls, Todd (Thesis advisor) / Coleman, Grisha (Committee member) / Sundaram, Hari (Committee member) / Arizona State University (Publisher)
Created2013
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Description
Daily dairies and other intensive measurement methods are increasingly used to study the relationships between two time varying variables X and Y. These data are commonly analyzed using longitudinal multilevel or bivariate growth curve models that allow for random effects of intercept (and sometimes also slope) but which do not

Daily dairies and other intensive measurement methods are increasingly used to study the relationships between two time varying variables X and Y. These data are commonly analyzed using longitudinal multilevel or bivariate growth curve models that allow for random effects of intercept (and sometimes also slope) but which do not address the effects of weekly cycles in the data. Three Monte Carlo studies investigated the impact of omitting the weekly cycles in daily dairy data under the multilevel model framework. In cases where cycles existed in both the time-varying predictor series (X) and the time-varying outcome series (Y) but were ignored, the effects of the within- and between-person components of X on Y tended to be biased, as were their corresponding standard errors. The direction and magnitude of the bias depended on the phase difference between the cycles in the two series. In cases where cycles existed in only one series but were ignored, the standard errors of the regression coefficients for the within- and between-person components of X tended to be biased, and the direction and magnitude of bias depended on which series contained cyclical components.
ContributorsLiu, Yu (Author) / West, Stephen G. (Thesis advisor) / Enders, Craig K. (Committee member) / Reiser, Mark R. (Committee member) / Arizona State University (Publisher)
Created2013
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Description
The purpose of this experimental study was to investigate the effects of textual and visual annotations on Spanish listening comprehension and vocabulary acquisition in the context of an online multimedia listening activity. 95 students who were enrolled in different sections of first year Spanish classes at a community college and

The purpose of this experimental study was to investigate the effects of textual and visual annotations on Spanish listening comprehension and vocabulary acquisition in the context of an online multimedia listening activity. 95 students who were enrolled in different sections of first year Spanish classes at a community college and a large southwestern university were randomly assigned to one of four versions of an online multimedia listening activity that contained textual and visual annotations of several key words. Students then took a comprehension and vocabulary posttest and a survey to measure cognitive load and general attitudes towards the program. Results indicated that textual annotations had a significant positive effect on listening comprehension and that visual annotations had a significant positive effect on how successful students felt. No statistically significant differences were found for other variables. Participants also reported positive attitudes towards vocabulary annotations and expressed a desire to see more annotations during multimedia listening activities of this type. These findings provide further evidence of the impact that multimedia may have on language acquisition. These findings have implications for multimedia design and for future research. Language listening activities should include a variety of vocabulary annotations that may help students to understand what they hear and to help them learn new vocabulary. Further research is needed outside of the laboratory, in the online and increasingly-mobile language learning environment in order to align the research with the environment in which many students currently study. The incorporation of motivation into multimedia learning theory and cognitive load should be explored, as well as new measures of cognitive load.
ContributorsCottam, Michael Evan (Author) / Savenye, Wilhelmina (Thesis advisor) / Klein, James D. (Committee member) / Atkinson, Robert (Committee member) / Arizona State University (Publisher)
Created2010
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Description

Meatless Monday is an initiative that encourages actionable steps toward the reduction of meat consumption by asking participants to eat meat-free on Mondays. Many organizations, cities, schools, and correctional facilities have implemented Meatless Monday initiatives as a push to improve environmental sustainability, human health, and the welfare of animals. Such

Meatless Monday is an initiative that encourages actionable steps toward the reduction of meat consumption by asking participants to eat meat-free on Mondays. Many organizations, cities, schools, and correctional facilities have implemented Meatless Monday initiatives as a push to improve environmental sustainability, human health, and the welfare of animals. Such initiatives provide an opportunity to educate consumers on the health benefits of a plant-forward diet, the environmental impact of meat production, animal welfare issues, the innovation of non-meat proteins, and to engage stakeholders in gaining more control over their food choices. This report offers a summary of seven Meatless Monday initiatives throughout the U.S., highlighting best practices and notable challenges of implementing and maintaining such an initiative in three different contexts: local government, school systems, and non-profit or volunteer-led organizations. This report was conducted through an extensive look at previous research, news articles, and marketing materials, as well as interviews with stakeholders in six mid-sized U.S. cities.

ContributorsAlvarado, Francisca (Author) / Coghlan, Jane (Author) / Cooper, Dory (Author) / Petersen, Cam (Author) / Wyman, Carly (Contributor) / Giraud, Esteve Gaelle (Contributor) / Dart, Jesse (Contributor) / Benard, Nick (Contributor) / Johns Hopkins Center for a Livable Future (Client) / Meatless Monday (Client) / Swette Center for Sustainable Food Systems (Contributor)
Created2022-04-01
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Description

The Hawaiian Islands are highly reliant on imported foods for feeding residents and visitors alike. This is in part due to a shortage in food processing infrastructure locally that contributes to Hawaiʻi’s inability to process much of its own food products. This study examines the feasibility of increasing food self-sufficiency

The Hawaiian Islands are highly reliant on imported foods for feeding residents and visitors alike. This is in part due to a shortage in food processing infrastructure locally that contributes to Hawaiʻi’s inability to process much of its own food products. This study examines the feasibility of increasing food self-sufficiency in the islands through utilizing legacy industrial fruit processing equipment recently acquired by Olohana Foundation, a small 501(c)3 non-profit in Hawaiʻi. This study asks: How can the Olohana Foundation develop their aseptic juicing line to best support increased food self-sufficiency in the islands? Additionally, how can the juicing line be re-deployed in a manner to provide sustainable economic opportunity to producers and other community members? Through interviews with Hawaiʻi food system experts, fruit grower and fruit product buyer surveys, and a review of selected Unites States Department of Agriculture National Agricultural Statistics Survey (USDA NASS) crop data for Hawaiʻi, our team evaluated the feasibility for re-establishing the juicing line. Our results found that due to the lack of available locally-produced fruits and high start-up and operational costs, it is unlikely that the juicing line can be re-established as it was previously operating, producing papaya and guava juices and purees. However, there is no shortage in demand for locally grown fruit products in Hawaiʻi and there is high interest from producers in joining a grower-owned cooperative. We conclude with several recommendations for the near, medium and long-term. In the near to medium-term, we recommend that the Foundation pursue alternative configurations of the equipment to produce niche Hawaiʻi products for which there is adequate supply, including fermented fruit products. In the long-term, the Foundation should research the potential for sourcing produce from other Pacific-region islands, as well as work at the policy and community levels to increase production of fruits locally, lower costs of production, and lower barriers to organic certification.

ContributorsHemphill, Eric (Author) / Lourey, Stu (Author) / Martinez, Mackenize (Author) / Robertson, Claire (Author) / Swette, Luke (Author) / Wyman, Carly (Author) / Olohana Foundation (Client) / Swette Center for Sustainable Food Systems (Contributor)
Created2021-12-01
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Description

Investigation of how digitalization of agriculture and agrifood systems affect local and regional food systems

ContributorsConner, Wesley (Author) / Kitzmiller, Brandee (Author) / Miller, Kana (Author) / Mollen, Paige (Author) / Rochelle, Mary (Author) / Snowaert, Joe (Author) / VanVranken, Annalise (Author) / Yoder, Isabel (Author) / TMG Think Tank for Sustainability (Client)
Created2021-09
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Description
Bicycle sharing systems (BSS) operate on five continents, and they change quickly with technological innovations. The newest “dockless” systems eliminate both docks and stations, and have become popular in China since their launch in 2016. The rapid increase in dockless system use has exposed its drawbacks. Without the order imposed

Bicycle sharing systems (BSS) operate on five continents, and they change quickly with technological innovations. The newest “dockless” systems eliminate both docks and stations, and have become popular in China since their launch in 2016. The rapid increase in dockless system use has exposed its drawbacks. Without the order imposed by docks and stations, bike parking has become problematic. In the areas of densest use, the central business districts of large cities, dockless systems have resulted in chaotic piling of bikes and need for frequent rebalancing of bikes to other locations. In low-density zones, on the other hand, it may be difficult for customers to find a bike, and bikes may go unused for long periods. Using big data from the Mobike BSS in Beijing, I analyzed the relationship between building density and the efficiency of dockless BSS. Density is negatively correlated with bicycle idle time, and positively correlated with rebalancing. Understanding the effects of density on BSS efficiency can help BSS operators and municipalities improve the operating efficiency of BSS, increase regional cycling volume, and solve the bicycle rebalancing problem in dockless systems. It can also be useful to cities considering what kind of BSS to adopt.
ContributorsCui, Wencong (Author) / Kuby, Michael (Thesis advisor) / Salon, Deborah (Committee member) / Thigpen, Calvin (Committee member) / Arizona State University (Publisher)
Created2018
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Description
Advancements in marine and aerospace technology drive legal reform in admiralty and air law. The increased accessibility and affordability of these technologies demand and motivate lawmakers and federal agencies to anticipate potential threats to peoples’ rights and resources in the seas and skies. Given the recent applications of unmanned aircraft

Advancements in marine and aerospace technology drive legal reform in admiralty and air law. The increased accessibility and affordability of these technologies demand and motivate lawmakers and federal agencies to anticipate potential threats to peoples’ rights and resources in the seas and skies. Given the recent applications of unmanned aircraft in the public and private sectors, developments in aircraft and air law are rapidly becoming more relevant to American Indian and Alaska Native tribes. In anticipation of legal reform, tribal nations are taking steps to assert, expand, and secure their air rights before agencies or the courts attempt to divest their sovereign authority. An analysis of two case studies through a lens of water and federal Indian law locates spaces in American jurisprudence that have the legal foundation and structural capacity to support a greater presence of Indigeneity in airspace. Research findings from these studies answer the following inquiries about tribal airspace sovereignty: where does Indigeneity reside in the US national airspace system and domestic air law, how are tribal air rights strengthened or weakened by American jurisprudence, what strategies do tribes employ to exercise their sovereignty in airspace, and how are tribes planning for future developments in aircraft and air law? Answers lead to proof of how meaningful consultation through collaborative rulemaking produces far greater mutual benefits than burdens for federal agencies and tribes, and much more. Most importantly, these discoveries celebrate a diverse and accumulative strategic legacy of strengthening and expanding tribal sovereignty in the face of imminent threats and possibilities in tribal airspace.
ContributorsKnight, Shelly Lynn (Author) / Vicenti Carpio, Myla (Thesis advisor) / Martinez, David (Committee member) / Riding In, James (Committee member) / Arizona State University (Publisher)
Created2019
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Description
Wittgenstein’s claim: anytime something is seen, it is necessarily seen as something, forms the philosophical foundation of this research. I synthesize theories and philosophies from Simondon, Maturana, Varela, Wittgenstein, Pye, Sennett, and Reddy in a research process I identify as a paradigm construction project. My personal studio practice of inventing

Wittgenstein’s claim: anytime something is seen, it is necessarily seen as something, forms the philosophical foundation of this research. I synthesize theories and philosophies from Simondon, Maturana, Varela, Wittgenstein, Pye, Sennett, and Reddy in a research process I identify as a paradigm construction project. My personal studio practice of inventing experiential media systems is a key part of this research and illustrates, with practical examples, my philosophical arguments from a range of points of observation. I see media systems as technical objects, and see technical objects as structurally determined systems, in which the structure of the system determines its organization. I identify making, the process of determining structure, as a form of structural coupling and see structural coupling as a means of knowing material. I introduce my theory of conceptual plurifunctionality as an extension to Simondon’s theory. Aspects of materiality are presented as a means of seeing material and immaterial systems, including cultural systems. I seek to answer the questions: How is structure seen as determining the organization of systems, and making seen as a process in which the resulting structures of technical objects and the maker are co-determined? How might an understanding of structure and organization be applied to the invention of contemporary experiential media systems?
ContributorsLahey, Byron (Author) / Burleson, Winslow (Thesis advisor) / Xin Wei, Sha (Committee member) / Collins, Daniel (Committee member) / Paine, Garth (Committee member) / Arizona State University (Publisher)
Created2015
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Description
The comparison of between- versus within-person relations addresses a central issue in psychological research regarding whether group-level relations among variables generalize to individual group members. Between- and within-person effects may differ in magnitude as well as direction, and contextual multilevel models can accommodate this difference. Contextual multilevel models have been

The comparison of between- versus within-person relations addresses a central issue in psychological research regarding whether group-level relations among variables generalize to individual group members. Between- and within-person effects may differ in magnitude as well as direction, and contextual multilevel models can accommodate this difference. Contextual multilevel models have been explicated mostly for cross-sectional data, but they can also be applied to longitudinal data where level-1 effects represent within-person relations and level-2 effects represent between-person relations. With longitudinal data, estimating the contextual effect allows direct evaluation of whether between-person and within-person effects differ. Furthermore, these models, unlike single-level models, permit individual differences by allowing within-person slopes to vary across individuals. This study examined the statistical performance of the contextual model with a random slope for longitudinal within-person fluctuation data.

A Monte Carlo simulation was used to generate data based on the contextual multilevel model, where sample size, effect size, and intraclass correlation (ICC) of the predictor variable were varied. The effects of simulation factors on parameter bias, parameter variability, and standard error accuracy were assessed. Parameter estimates were in general unbiased. Power to detect the slope variance and contextual effect was over 80% for most conditions, except some of the smaller sample size conditions. Type I error rates for the contextual effect were also high for some of the smaller sample size conditions. Conclusions and future directions are discussed.
ContributorsWurpts, Ingrid Carlson (Author) / Mackinnon, David P (Thesis advisor) / West, Stephen G. (Committee member) / Grimm, Kevin J. (Committee member) / Suk, Hye Won (Committee member) / Arizona State University (Publisher)
Created2016