Principles for Designing Context-Aware Applications for Physical Activity Promotion

Mobile devices with embedded sensors have become commonplace, carried by billions of people worldwide. Their potential to influence positive health behaviors such as physical activity in people is just starting to be realized. Two critical ingredients, an accurate understanding of human behavior and use of that knowledge for building computational models, underpin all emerging behavior change applications. Early research prototypes suggest that such applications would facilitate people to make difficult decisions to manage their complex behaviors. However, the progress towards building real-world systems that support behavior change has been much slower than expected. The extreme diversity in real-world contextual conditions and user characteristics has prevented the conception of systems that scale and support end-users’ goals. We believe that solutions to the many challenges of designing context-aware systems for behavior change exist in three areas: building behavior models amenable to computational reasoning, designing better tools to improve our understanding of human behavior, and developing new applications that scale existing ways of achieving behavior change. With physical activity as its focus, this thesis addresses some crucial challenges that can move the field forward. Specifically, this thesis provides the notion of sweet spots, a phenomenological account of how people make and execute their physical activity plans. The key contribution of this concept is in its potential to improve the predictability of computational models supporting physical activity planning. To further improve our understanding of the dynamic nature of human behavior, we designed and built Heed, a low-cost, distributed and situated self-reporting device. Heed’s single-purpose and situated nature proved its use as the preferred device for self-reporting in many contexts. We finally present a crowdsourcing system that leverages expert knowledge to write personalized behavior change messages for large-scale context-aware applications.PHDInformationUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttps://deepblue.lib.umich.edu/bitstream/2027.42/144089/1/gparuthi_1.pd

The Law, Culture, and Economics of Fashion

Fashion is one of the world's most important creative industries. As the most immediate visible marker of self-presentation, fashion creates vocabularies for self-expression that relate individuals to society. Despite being the core of fashion and legally protected in Europe, fashion design lacks protection against copying under U.S. intellectual property law. This Article frames the debate over whether to provide protection to fashion design within a reflection on the cultural dynamics of innovation as a social practice. The desire to be in fashion - most visibly manifested in the practice of dress - captures a significant aspect of social life, characterized by both the pull of continuity with others and the push of innovation toward the new. We explain what is at stake economically and culturally in providing legal protection for original designs, and why a protection against close copies only is the proper way to proceed. We offer a model of fashion consumption and production that emphasizes the complementary roles of individual differentiation and shared participation in trends. Our analysis reveals that the current legal regime, which protects trademarks but not fashion designs from copying, distorts innovation in fashion away from this expressive aspect and toward status and luxury aspects. The dynamics of fashion lend insight into dynamics of innovation more broadly, in areas where consumption is also expressive. We emphasize that the line between close copying and remixing represents an often underappreciated but promising direction for intellectual property today. Published in Stanford Law Review, Vol. 61, March 2009.

Chatham House Report: Changing Climate, Changing Diets: Pathways to Lower Meat Consumption

No abstract available

Mobile Games for Learning:A Pattern-Based Approach

The core concern of this thesis is the design of mobile games for learning. The conditions and requirements that are vital in order to make mobile games suitable and effective for learning environments are investigated. The base for exploration is the pattern approach as an established form of templates that provide solutions for recurrent problems. Building on this acknowledged form of exchanging and re-using knowledge, patterns for game design are used to classify the many gameplay rules and mechanisms in existence. This research draws upon pattern descriptions to analyze learning game concepts and to abstract possible relationships between gameplay patterns and learning outcomes. The linkages that surface are the starting bases for a series of game design concepts and their implementations are subsequently evaluated with regard to learning outcomes. The findings and resulting knowledge from this research is made accessible by way of implications and recommendations for future design decisions

Head Up Games : on the design, creation and evaluation of interactive outdoor games for children

This thesis proposes a new genre of outdoor games for children, namely Head Up Games. The concept was inspired by the observation that existing pervasive outdoor games for children were mostly played head down, as the predominantly screen-based interaction of existing games required constant attention of the children. First, the vision of Head Up Games is described and illustrated with several design cases (Chapter 2). In contrast to the head down games, Head Up Games aim to encourage and support rich social interaction and physical activity, play behaviors that are similar to play behaviors seen in traditional outdoor games (such as tag and hide-and-seek). The design process of Head Up Games poses several challenges. In User Centered Design it is commonly accepted to start the development of a new product using low-fi mock-ups, e.g., paper prototypes, and evaluate these with end-users. In the case of Head Up Games this proved to be difficult, as the emerging game experience is significantly altered when using paper prototypes. Therefore, a study was carried out that used high-fi prototypes, i.e. working, interactive, prototypes, from a very early stage in the design process (Chapter 3). This way, the effect of interactions on the game experience can be addressed earlier and better in the design process. Furthemore, having access to technology early in the design process, allows designers to better explore the design space. However, designers often do not possess adequate skills to quickly prototype interactive products, particularly products that need to be evaluated in an outdoor context. Such a development is often costly and time-consuming. Therefore, the RaPIDO platform was developed (Chapter 4). The platform not only includes the appropriate hardware for creating outdoor games, but is also bundled with software libraries, to allow designers not specifically trained in software engineering to adopt the platform easily. RaPIDO was evaluated using a case study methodology with two Industrial Design master students. The evaluation not only focused on the usability of the platform, but, more importantly, how the use of the platform affected the design process. The main conclusion of the study was that the designers indeed were able to rapidly create mobile games, and that the hardware offered was suitable for creating outdoor games. Furthermore, issues were identified with regard to writing the game software, e.g., managing the complexity of the software. Finally, for evaluating Head Up Games with children two methods were applied: the Outdoor Play Observation Scheme (OPOS) was used to quantify the intended play behavior. Furthermore, GroupSorter was developed to provide a framework to interview a group of children simultaneously, resulting in qualitative comments. Both OPOS and GroupSorter were applied for evaluating three Head Up Games, which are described in Chapter 5

New interactive interface design for STEM museums: a case study in VR immersive technology

Novel technologies are used to develop new museum exhibits, aiming to attract visitors’ attention. However, using new technology is not always successful, perhaps because the design of a new exhibit was inappropriate, or users were unfamiliar with interacting with a new device. As a result, choosing alternative technology to create a unique interactive display is critical. The results of using technology best practices enable the designer to help reduce failures. This research uses virtual reality (VR) immersive technology as a case study to explore how to design a new interactive exhibit in science, technology, engineering and mathematics (STEM) museums. VR has seen increased use in Thailand museums, but people are unfamiliar with it, and few use it daily. It had problems with health concerns such as motion sickness, and the virtual reality head-mounted display (VR HMD) restricts social interaction, which is essential for museum visitors. This research focuses on improving how VR is deployed in STEM museums by proposing a framework for designing a new VR exhibit that supports social interaction. The research question is, how do we create a new interactive display using VR immersive technology while supporting visitor social interaction? The investigation uses mixed methods to construct the proposed framework, including a theoretical review, museum observational study, and experimental study. The in-the-wild study and workshop were conducted to evaluate the proposed framework. The suggested framework provides guidelines for designing a new VR exhibit. The component of a framework has two main parts. The first part is considering factors for checking whether VR technology suit for creating a new exhibit. The second part is essential components for designing a new VR exhibit includes Content Design, Action Design, Social Interaction Design, System Design, and Safety and Health. Various kinds of studies were conducted to answer the research question. First, a museum observational study led to an understanding of the characteristics of interactive exhibits in STEM museums, the patterns of social interaction, the range of immersive technology that museums use and the practice of using VR technology in STEM museums. Next, the alternative design for an interactive exhibit study investigates the effect on the user experience of tangible, gesture and VR technologies. It determines the factors that make the user experience different and suggests six aspects to consider when choosing technology. Third, social interaction design in VR for museum study explores methods to connect players; single player, symmetric connection (VR HMD and VR HMD) and asymmetric connection (VR HMD and PC), to provide social interaction while playing the VR exhibit and investigates social features and social mechanics for visitors to communicate and exchange knowledge. It found that the symmetric connection provides better social interaction than others. However, the asymmetric link is also a way for visitors to exchange knowledge. The study recommends using mixed symmetric and asymmetric connections when deploying VR exhibits in a museum. This was confirmed by the in-the-wild research and validated the framework that indicated it helped staff manage the VR exhibit and provided a co-presence and co-player experience. Fourth, the content design of a display in the virtual environment study examines the effect of design content between 2D and 3D on visitors' learning and memory. It showed that content design with 2D and 3D did not influence visitors to gain knowledge and remember the exhibit’s story. However, the 3D view offers more immersion and emotion than the 2D view. The research proposes using 3D when designing content to evoke a player’s emotion; designing content for a VR exhibit should deliver experience rather than text-based learning. Furthermore, the feedback on the qualitative results of each study provided insight into the design user experience. Evaluation of the proposed framework is the last part of this research. A study in the wild was conducted to validate the proposed framework in museums. Two VR exhibits were adjusted with features that matched the proposed framework’s suggested components and were deployed in the museum to gather visitors' feedback. It received positive feedback from the visitors, and visitors approved of using VR technology in the museum. The results of user feedback from a workshop to evaluate the helpfulness of the framework showed that the framework's components are appropriate, and the framework is practical when designing a new VR exhibit, particularly for people unfamiliar with VR technology. In addition, the proposed framework of this research may be applied to study emerging technology to create a novel exhibit