Leaf Menus: Linear Menus with Stroke Shortcuts for Small Handheld Devices

International audienceThis paper presents Leaf menu, a new type of contextual linear menu that supports curved gesture shortcuts. By providing an alternative to keyboard shortcuts, the Leaf menus can be used for the selection of commands on tabletops, but its key benefit is its adequacy to small handheld touchscreen devices (PDA, Smartphone). Indeed Leaf menus define a compact and known layout inherited from linear menus, they support precise finger interaction, they manage occlusion and they can be used in close proximity to the screen borders. Moreover, by providing stroke shortcuts, they favour the selection of frequent commands in expert mode and make eye-free selection possible

Wavelet Menus: A Stacking Metaphor for Adapting Marking Menus to Mobile Devices

4 pagesInternational audienceExploration and navigation in multimedia data hierarchies (e.g., photos, music) are frequent tasks on mobile devices. However, visualization and interaction are impoverished due to the limited size of the screen and the lack of precise input devices. As a result, menus on mobile devices do not provide efficient navigation as compared to many innovative menu techniques proposed for Desktop platforms. In this paper, we present Wavelet, the adaptation of the Wave menu for the navigation in multimedia data on iPhone. Its layout, based on an inverted representation of the hierarchy, is particularly well adapted to mobile devices. Indeed, it guarantees that submenus are always displayed on the screen and it supports efficient navigation by providing previsualization of the submenus

Wavelet Menu : Adaptation des Marking Menus pour les Dispositifs Mobiles

National audienceL'exploration et la navigation dans les hiérarchies de données multimédia (photos, musiques, etc.) sont des tâches fréquentes sur dispositifs mobiles. Cependant, l'interaction peut s'en trouver dégradée du fait de la petite taille de l'écran et de l'absence de dispositifs d'entrée précis. Par conséquent, les techniques de menus innovantes conçues pour PC ne sont plus adaptées aux dispositifs mobiles pour naviguer efficacement. Dans cet article, nous présentons le Wavelet menu, l'adaptation du Wave menu pour la navigation dans des données multimédia sur iPhone. Grâce à une représentation inversée de la hiérarchie, il est particulièrement adapté aux dispositifs mobiles. En effet, il garantit que les sous-menus sont toujours affichés à l'écran et la prévisualisation des sous-menus permet une navigation efficace

Wavelet Menus on Handheld Devices: Stacking Metaphor for Novice Mode and Eyes-Free Selection for Expert Mode

International audienceThis paper presents the design and evaluation of the Wavelet menu and its implementation on the iPhone. The Wavelet menu consists of a concentric hierarchical Marking menu using simple gestures. The novice mode, i.e. when the menu is displayed, is well adapted to the limited screen space of handheld devices because the representation of the menu hierarchy is inverted, the deeper submenu being always displayed at the center of the screen. The visual design is based on a stacking metaphor to reinforce the perception of the hierarchy and to help users to quickly understand how the technique works. The menu also supports submenu previsualization, a key property to navigate efficiently in a hierarchy of commands. The quantitative evaluation shows that the Wavelet menu provides an intuitive way for supporting efficient gesture-based navigation. The expert mode, i.e. gesture without waiting for the menu to pop-up, is another key property of the Wavelet menu: By providing stroke shortcuts, the Wavelet favors the selection of frequent commands in expert mode and makes eyes-free selection possible. A user experiment shows that participants are able to select commands, eyes-free, while walking

Review of Actinide Decorporation with Chelating Agents

International audienceIn case of accidental release of radionuclides in a nuclear facility or in the environment, internal contamination (inhalation, in-gestion or wound) with actinides represents a severe health risk to human beings. It is therefore important to provide effective che-lation therapy or decorporation to reduce acute radiation damage, chemical toxicity, and late radiation effects. Speciation governs bioavailability and toxicity of elements and it is a prerequisite tool for the design and success of new ligands or chelating agents. The purpose of this review is to present the state-of-the-art of actinide decorporation within biological media, to recall briefly actinide metabolism, to list the basic constraints of actinideeligand for development, to describe main tools developed and used for decorporation studies, to review mainly the chelating agents tested for actinides, and finally to conclude on the future trends in this field. To cite this article: E ´. Ansoborlo et al., C. R. Chimie X 33 (2007). Ó 2007 Académie des sciences. Published by Elsevier Masson SAS. All rights reserved.En cas de rejet accidentel de radionucléides dans une installation nucléaire ou dans l'environnement, il existe un risque de contamination interne (inhalation, ingestion ou blessure) pour l'homme et il est important de pouvoir fournir un traitement thérapeutique par des agents chélatants ou décorporation permettant de réduire la dose, la toxicité chimique et les effets retardés des radiations.La spéciation domine la biodisponibilité et la toxicité des éléments et représente un outil indispensable pour la conception et l'efficacité de nouveaux ligands ou chélatants. Le but de cet article est de présenter l'état de l'art sur la décorporation des actinides en milieu biologique, de rappeler les grandes lignes du métabolisme des actinides, de lister les contraintes indispensables actinide–ligands pour la décorporation, de décrire succinctement les principaux outils expérimentaux ou analytiques utilisés, de passer en revue les principaux ligands testés pour les actinides et de présenter les orientations du futur dans ce domaine

VersaPen: Exploring Multimodal Interactions with a Programmable Modular Pen

International audienceWe introduce and demonstrate VersaPen, a modular pen for expanding input capabilities. Users can create their own digital pens by stacking different input/output modules that define both the look and feel of the customized device. Ver-saPen investigate the benefits of adaptable devices and enriches interaction by providing multimodal capabilities, allows in-place interaction, it reduces hand movements and avoids cluttering the interface with menus and palettes. The device integrates seamlessly thanks to a visual programming interface, allowing end users to connect input and output sources in other existing software. We present various applications to demonstrate the power of VersaPen and how it enables new interaction techniques

Visual Menu Techniques

International audienceMenus are used for exploring and selecting commands in interactive applications. They are widespread in current systems and used by a large variety of users. As a consequence, they have motivated many studies in Human-Computer Interaction (HCI). Facing the large variety of menus, it is difficult to have a clear understanding of the design possibilities and to ascertain their similarities and differences. In this article, we address a main challenge of menu design: the need to characterize the design space of menus. To do this, we propose a taxonomy of menu properties that structures existing work on visual menus. In order to highlight the impact of the properties on performance, we begin by refining performance through a list of quality criteria and by reviewing existing analytical and empirical methods for quality evaluation. The taxonomy of menu properties is an unavoidable step toward the elaboration of advanced predictive models of menu performance and the optimization of menus. A key point of this work is to focus both on menus and on the properties of menus, to enable a fine-grained analysis in terms of performance

VersaPen: An Adaptable, Modular and Multimodal I/O Pen

International audienceWhile software often allows user customization, most physical devices remain mainly static. We introduce VersaPen, an adaptable, multimodal, hot-pluggable pen for expanding input capabilities. Users can create their own pens by stacking different input/output modules that define both the look and feel of the customized device. VersaPen offers multiple advantages. Allowing in-place interaction, it reduces hand movements and avoids cluttering the interface with menus and palettes. It also enriches interaction by providing multimodal capabilities, as well as a mean to encapsulate virtual data into physical modules which can be shared by users to foster collaboration. We present various applications to demonstrate how VersaPen enables new interaction techniques

Demonstration of the yeasticidal efficacy of povidone-iodine-based commercial antiseptic solutions against Candida auris

International audienceCandida auris is an emerging yeast pathogen with worldwide distribution and a great propensity for nosocomial spread. Recent reports have warned of the significant emergence of C. auris in several healthcare facilities. In order to stop its nosocomial transmission, use of antiseptics constitutes the first-line lever of action in the fighting against C. auris skin colonization. However, little is known about the efficacy of these products, and moreover no antiseptics are currently registered for use against C. auris. This study investigated the in vitro yeasticidal activity of povidone-iodine against C. auris, and compared the findings to C. albicans and C. glabrata, according to the EN standard 1275:2005. Results support the use of such commercial antiseptics in the context of colonization with this yeast

The planar cell polarity Vangl2 protein: From genetics to cellular and molecular functions

International audiencePlanar cell polarity (PCP) refers to the capacity of a tissue, typically, but not exclusively, an epithelium, to transmit directional information across the tissue plane such that its cellular constituents can differentiate , divide or move in a coordinated manner and along a common axis, generally orthogonal to the apical-basal axis. PCP relies on a core module of highly conserved proteins originally identified in Drosophila which can act intra-and extracellularly. In this review, we focus on the vertebrate ortholog of one of these core PCP components, namely the Vangl2 protein. After a brief historical perspective, we discuss novel cellular settings for which a cellular Vangl2 requirement has been recently documented, with a particular emphasis on adult tissues that rely on Vangl2 for the maintenance of their regener-ative capacity or their physiological functions. Finally we compile the most recent data about Vangl2 interacting proteins