Mobility is the Message: Experiments with Mobile Media Sharing

This thesis explores new mobile media sharing applications by building, deploying, and studying their use. While we share media in many different ways both on the web and on mobile phones, there are few ways of sharing media with people physically near us. Studied were three designed and built systems: Push!Music, Columbus, and Portrait Catalog, as well as a fourth commercially available system – Foursquare. This thesis offers four contributions: First, it explores the design space of co-present media sharing of four test systems. Second, through user studies of these systems it reports on how these come to be used. Third, it explores new ways of conducting trials as the technical mobile landscape has changed. Last, we look at how the technical solutions demonstrate different lines of thinking from how similar solutions might look today. Through a Human-Computer Interaction methodology of design, build, and study, we look at systems through the eyes of embodied interaction and examine how the systems come to be in use. Using Goffman’s understanding of social order, we see how these mobile media sharing systems allow people to actively present themselves through these media. In turn, using McLuhan’s way of understanding media, we reflect on how these new systems enable a new type of medium distinct from the web centric media, and how this relates directly to mobility. While media sharing is something that takes place everywhere in western society, it is still tied to the way media is shared through computers. Although often mobile, they do not consider the mobile settings. The systems in this thesis treat mobility as an opportunity for design. It is still left to see how this mobile media sharing will come to present itself in people’s everyday life, and when it does, how we will come to understand it and how it will transform society as a medium distinct from those before. This thesis gives a glimpse at what this future will look like

Enhanced device-based 3D object manipulation technique for handheld mobile augmented reality

3D object manipulation is one of the most important tasks for handheld mobile Augmented Reality (AR) towards its practical potential, especially for realworld assembly support. In this context, techniques used to manipulate 3D object is an important research area. Therefore, this study developed an improved device based interaction technique within handheld mobile AR interfaces to solve the large range 3D object rotation problem as well as issues related to 3D object position and orientation deviations in manipulating 3D object. The research firstly enhanced the existing device-based 3D object rotation technique with an innovative control structure that utilizes the handheld mobile device tilting and skewing amplitudes to determine the rotation axes and directions of the 3D object. Whenever the device is tilted or skewed exceeding the threshold values of the amplitudes, the 3D object rotation will start continuously with a pre-defined angular speed per second to prevent over-rotation of the handheld mobile device. This over-rotation is a common occurrence when using the existing technique to perform large-range 3D object rotations. The problem of over-rotation of the handheld mobile device needs to be solved since it causes a 3D object registration error and a 3D object display issue where the 3D object does not appear consistent within the user’s range of view. Secondly, restructuring the existing device-based 3D object manipulation technique was done by separating the degrees of freedom (DOF) of the 3D object translation and rotation to prevent the 3D object position and orientation deviations caused by the DOF integration that utilizes the same control structure for both tasks. Next, an improved device-based interaction technique, with better performance on task completion time for 3D object rotation unilaterally and 3D object manipulation comprehensively within handheld mobile AR interfaces was developed. A pilot test was carried out before other main tests to determine several pre-defined values designed in the control structure of the proposed 3D object rotation technique. A series of 3D object rotation and manipulation tasks was designed and developed as separate experimental tasks to benchmark both the proposed 3D object rotation and manipulation techniques with existing ones on task completion time (s). Two different groups of participants aged 19-24 years old were selected for both experiments, with each group consisting sixteen participants. Each participant had to complete twelve trials, which came to a total 192 trials per experiment for all the participants. Repeated measure analysis was used to analyze the data. The results obtained have statistically proven that the developed 3D object rotation technique markedly outpaced existing technique with significant shorter task completion times of 2.04s shorter on easy tasks and 3.09s shorter on hard tasks after comparing the mean times upon all successful trials. On the other hand, for the failed trials, the 3D object rotation technique was 4.99% more accurate on easy tasks and 1.78% more accurate on hard tasks in comparison to the existing technique. Similar results were also extended to 3D object manipulation tasks with an overall 9.529s significant shorter task completion time of the proposed manipulation technique as compared to the existing technique. Based on the findings, an improved device-based interaction technique has been successfully developed to address the insufficient functionalities of the current technique

ECSCW 2013 Adjunct Proceedings The 13th European Conference on Computer Supported Cooperative Work 21 - 25. September 2013, Paphos, Cyprus

This volume presents the adjunct proceedings of ECSCW 2013.While the proceedings published by Springer Verlag contains the core of the technical program, namely the full papers, the adjunct proceedings includes contributions on work in progress, workshops and master classes, demos and videos, the doctoral colloquium, and keynotes, thus indicating what our field may become in the future

Augmented and virtual reality evolution and future tendency

Augmented reality and virtual reality technologies are increasing in popularity. Augmented reality has thrived to date mainly on mobile applications, with games like Pokémon Go or the new Google Maps utility as some of its ambassadors. On the other hand, virtual reality has been popularized mainly thanks to the videogame industry and cheaper devices. However, what was initially a failure in the industrial field is resurfacing in recent years thanks to the technological improvements in devices and processing hardware. In this work, an in-depth study of the different fields in which augmented and virtual reality have been used has been carried out. This study focuses on conducting a thorough scoping review focused on these new technologies, where the evolution of each of them during the last years in the most important categories and in the countries most involved in these technologies will be analyzed. Finally, we will analyze the future trend of these technologies and the areas in which it is necessary to investigate to further integrate these technologies into society.Universidad de Sevilla, Spain Telefonica Chair “Intelligence in Networks

From Sensor to Observation Web with Environmental Enablers in the Future Internet

This paper outlines the grand challenges in global sustainability research and the objectives of the FP7 Future Internet PPP program within the Digital Agenda for Europe. Large user communities are generating significant amounts of valuable environmental observations at local and regional scales using the devices and services of the Future Internet. These communities’ environmental observations represent a wealth of information which is currently hardly used or used only in isolation and therefore in need of integration with other information sources. Indeed, this very integration will lead to a paradigm shift from a mere Sensor Web to an Observation Web with semantically enriched content emanating from sensors, environmental simulations and citizens. The paper also describes the research challenges to realize the Observation Web and the associated environmental enablers for the Future Internet. Such an environmental enabler could for instance be an electronic sensing device, a web-service application, or even a social networking group affording or facilitating the capability of the Future Internet applications to consume, produce, and use environmental observations in cross-domain applications. The term ?envirofied? Future Internet is coined to describe this overall target that forms a cornerstone of work in the Environmental Usage Area within the Future Internet PPP program. Relevant trends described in the paper are the usage of ubiquitous sensors (anywhere), the provision and generation of information by citizens, and the convergence of real and virtual realities to convey understanding of environmental observations. The paper addresses the technical challenges in the Environmental Usage Area and the need for designing multi-style service oriented architecture. Key topics are the mapping of requirements to capabilities, providing scalability and robustness with implementing context aware information retrieval. Another essential research topic is handling data fusion and model based computation, and the related propagation of information uncertainty. Approaches to security, standardization and harmonization, all essential for sustainable solutions, are summarized from the perspective of the Environmental Usage Area. The paper concludes with an overview of emerging, high impact applications in the environmental areas concerning land ecosystems (biodiversity), air quality (atmospheric conditions) and water ecosystems (marine asset management)

Collaborative filtering for mobile application recommendation with implicit feedback

This paper introduces a novel dataset regarding the installation of mobile applications in users devices, and benchmarks multiple well-established collaborative filtering techniques, leveraging on the user implicit feedback extracted from the data. Our experiments use 3 snapshots provided by Aptoide, one of the leading mobile application stores. These snapshots provide information about the installed applications for more than 4 million users in total. Such data allow us to infer the users activity over time, which corresponds to an implicit measure of interest in a certain application, as we consider that installs reflect a positive user opinion on an app, and, inversely, uninstalls reflect a negative user opinion. Since recommendation systems usually use explicit rating data, we have filtered and transformed the existing data into binary ratings. We have trained several recommendation models, using the Surprise Python scikit, comparing baseline algorithms to neighborhood-based and matrix factorization methods. Our evaluation shows that SVD-based and KNN-based methods achieve good performance scores while being computationally efficient, suggesting that they are suitable for recommendation in this novel dataset.info:eu-repo/semantics/acceptedVersio

Understanding Roles and User Experience of Mobile Technology in Co-located Interaction

Over the last few decades, mobile phones have evolved into ubiquitous devices that support remote communication and various kinds of personal activities. Due to their personal nature, device users are engaged in interactions on mobile devices and pay less attention to other people around them. Furthermore, as the user interface is optimized for a single person use, it reduces sharing and interaction capabilities with co-located people, which negatively influences the opportunities for shared experiences and social activities. This thesis attempts to understand how mobile technology can be designed for co-located interaction.Previous literature on the topic indicates that mobile technology is designed and employed in co-located interaction to fulfill one of these objectives - inviting interaction, facilitating interaction, encouraging interaction or enforcing interaction. While mobile technology facilitating interaction is investigated the most, this research further explores the remaining three objectives.This thesis belongs to the research field of Human-Computer Interaction (HCI) and Computer-Supported Cooperative Work (CSCW). This research follows research through design approach, producing the contribution of knowledge through design interventions. This compound thesis includes six studies, introducing seven concepts for mobile application, a novel design for a mobile device, and two functional prototypes. Four studies explore mobile technology ‘inviting interaction’; one study explores the technology aiming to ‘encourage interaction’ and the other study explores the mobile technology ‘enforcing interaction’. The intended contexts of use are for leisure and non-work-related activities, with an emphasis on enhancing the co-located social interaction in the activities.The empirical findings of this thesis include both subjective user experiences and objective observations of users’ interactions engendered by mobile technology as well as reflections on the findings in light of existing literature. Based on these findings, this thesis provides insights about 1) The user experience in respect to mobile technology in different co-located interactions; and 2) The roles that mobile technology can play in co-located social interactions, and the design implications describing properties that influence interaction and collaboration between co-located users. These insights provide understandings about mobile technology for researchers and designers dealing with the colocated interaction domain. In addition, this thesis introduces a model of designing mobile technology for co-located interaction. The model intends to help researchers and designers in their early research and design process of mobile technology for co-located interaction. The model is built upon the relation between design objectives, design perspectives, dealing with limitations of mobile technology and the roles of technology in co-located interaction

Designing Tools for Reflection: a concept-driven approach

We are surrounded by objects. We often use and interact with them to do our daily activities. They do not only support us and augment our abilities, but also, can be considered as companions of our thoughts. We think with objects, because they contain information about us: about our memories, experiences, emotions, and activities as Sherry Turkle highlights (2011). Furthermore, our everyday objects are increasingly computed, smart and connected to the Internet. They are able to collect data, elaborate and provide real-time feedbacks. These feedbacks cannot only support us to improve our activities, but also enables critical thinking and reflection on our actions. This resonates very well with what Donald Schön meant by having reflective conversation with materials at hand (1983;1996). He highlighted that materials –artifacts– of a situation talk back to designer, so they enable and support reflection in action of designing. So, how about if we consider that our daily objects can talk back and make us think on our actions in order to consider alternatives? This dissertation, is an attempt to consider this opportunity. The nature of this dissertation is mostly conceptual and its scope is defining the physical and behavioral characteristics of smart artifacts able to provoke thoughts and reflection in user leading to a conscious behavior change. I sought to use existing theories about reflective thinking in HCI and beyond, as valuable sources for developing design concept. I have been inspired by the Concept-Driven interaction design research (Stolterman and Wiberg 2011) and created and defined the whole structure of this dissertation based on this methodology, from the definition of the concept – Tool for Reflection – to the construction of a theoretical model from the design outcome –Make Me Think model. During this process, I used different methods such as conducting literature analysis, context analysis, survey, participatory session and prototyping. The sustainable urban mobility behaviors in the city of Turin (Italy) as the target behavior and home as the place for using Tool for Reflection have been chosen for this research. In particular, informed by architectural studies, I conceptualized In-Between Places as a category of places that connect home places to city places. I suggested to consider such areas as suitable places for evoking thoughts on urban mobility behaviors, in home. This dissertation provides a theoretical perspective with which to guide the design of smart objects that evoke reflection. It first provides a set of characteristics of a Tool for Reflection as a physical artifact. Then it provides a theoretical model, considering the relationship between a Tool for Reflection and a user. The key contributions include the design of the Sóle, a smart lamp, not only as an example of a Tool for Reflection with its theoretically pre-defined characteristics, but also as an instrument for iterating from design to the theory. The overall approach, the methodology and the findings should be of interest in particular to researchers working on design for reflection in the HCI. More broadly this dissertation can be of interest of researchers in the HCI, whose research is around designing artifacts, both as an ‘outcome’ and as an ‘instrument’ of the research process