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Ph.D de

Ph.D
Group : Human-Centered Computing

A Body-centric Framework for Generating and Evaluating Novel Interaction Techniques

Starts on 01/10/2009
Advisor : MACKAY, Wendy
[Stéphane HUOT]

Funding :
Affiliation : Université Paris-Sud
Laboratory : LRI IN-SITU

Defended on 05/12/2012, committee :
Encadrants :
Wendy MACKAY, Directeur de Recherche (Inria Saclay–Île-de-France)
Stéphane HUOT, Maître de Conférences (Université Paris-Sud)

Rapporteurs :
Mountaz HASCOËT, Maître de Conférences, HDR (Université Montpellier II)
Celine LATULIPE, Associate Professor (University of North Carolina at Charlotte)

Examinateurs :
Steven FEINER, Professor (Columbia University, New York)
Anne VILNAT, Professeur (Université Paris-Sud)

Research activities :

Abstract :
This thesis introduces BodyScape, a body-centric framework that accounts for how users coordinate their movements within and across their own limbs in order to interact with a wide range of devices, across multiple surfaces. It introduces a graphical notation that describes interaction techniques in terms of (1) motor assemblies responsible for performing a control task (input motor assembly) or bringing the body into a position to visually perceive output (output motor assembly), and (2) the movement coordination of motor assemblies, relative to the body or fixed in the world, with respect to the interactive environment.
This thesis applies BodyScape to 1) investigate the role of support in a set of novel bimanual interaction techniques for hand-held devices, 2) analyze the competing effect across multiple input movements, and 3) compare twelve pan-and-zoom techniques on a wall-sized display to determine the roles of guidance and interference on performance.
Using BodyScape to characterize interaction clarifies the role of device support on the user’s bal- ance and subsequent comfort and performance. It allows designers to identify situations in which multiple body movements interfere with each other, with a corresponding decrease in performance. Finally, it highlights the trade-offs among different combinations of techniques, enabling the analysis and generation of a variety of multi-surface interaction techniques. I argue that including a body-centric perspective when defining interaction techniques is essential for addressing the combinatorial explosion of interactive devices in multi-surface environments.

Ph.D. dissertations & Faculty habilitations
DECODING THE PLATFORM SOCIETY: ORGANIZATIONS, MARKETS AND NETWORKS IN THE DIGITAL ECONOMY
The original manuscript conceptualizes the recent rise of digital platforms along three main dimensions: their nature of coordination devices fueled by data, the ensuing transformations of labor, and the accompanying promises of societal innovation. The overall ambition is to unpack the coordination role of the platform and where it stands in the horizon of the classical firm – market duality. It is also to precisely understand how it uses data to do so, where it drives labor, and how it accommodates socially innovative projects. I extend this analysis to show continuity between today’s society dominated by platforms and the “organizational society”, claiming that platforms are organized structures that distribute resources, produce asymmetries of wealth and power, and push social innovation to the periphery of the system. I discuss the policy implications of these tendencies and propose avenues for follow-up research.

DISTRIBUTED COMPUTING WITH LIMITED RESOURCES


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