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UBIMOB Tables of Contents: 0405060809111213

Proceedings of the 2008 French-speaking conference on Mobility and ubiquity computing

Fullname:Proceedings of the 4th French-speaking conference on Mobility and ubiquity computing
Editors:Nathalie Portölan; Christine Collet
Location:Saint Malo, France
Dates:2008-May-28 to 2008-May-30
Standard No:ISBN 1-59593-980-6, 978-1-59593-980-7; ACM DL: Table of Contents hcibib: UBIMOB08
Links:Conference Home Page
  1. Fusion de données et contexte (Data Fusion and Context)
  2. Modèles et planification (Models and Planning)
  3. Mobilité et services (Mobility and Services)
  4. Pédagogie (Pedagogy)
  5. Démo

Fusion de données et contexte (Data Fusion and Context)

EMMA: modèle utilisateur pour la plasticité des interfaces homme-machine en mobilité BIBAKFull-Text 1-8
  Vincent Ganneau; Gaëlle Calvary; Rachel Demumieux
Adapting User Interfaces (UI) while in mobility remains challenging as contexts of use identification and changes can obviously not be finely envisioned at design time. However, user's tasks, habits and preferences may be context dependent. As a result, there is a need for managing context-aware adaptation at runtime. This paper describes EMMA (Embedded Manager for Mobile Adaptation), a running system that gathers data in mobility, learns key contexts of use, and provides the end-user with relevant adaptation. The process is based on a bayesian user model embedded on a Smartphone running under Windows Mobile operating system. It is placed under the end-user's control through a dedicated UI, called meta-UI. Besides this end-user's partner role, EMMA can serve as a designer's partner tool for identifying the key contexts of use in the wild.
Keywords: Bayesian network, Smartphone, adaptation, clustering, context of use, learning, mobility, plasticity, user modeling
La fusion multi-capteurs dans l'habitat communicant: une approche non-probabiliste BIBAKFull-Text 9-16
  Vincent Ricquebourg; David Durand; David Menga; Laurent Delahoche; Bruno Marhic; Christophe Logé; Anne-Marie Jolly-Desodt
To follow up our works on a service-oriented architecture dedicated to context perception for the smart home [7], we present in this paper how to move complex reasoning on top of the ontology. We focus on a multi-sensors data fusion architecture using the Transferable Belief Model. High level symbolic data are deduced using fusion from redundant, complementary and heterogeneous sensors data. Symbolic data describe complex contexts and enable to provide more contextualised services. To show the contribution of using the Transferable Belief Model in context awareness systems we detail an experiment about human posture characterisation using heterogeneous and uncertain sensors data.
Keywords: context, data fusion, dealing with uncertainty, sensors, smart home
Extraction de connaissances dans les réseaux ad hoc inter-véhicules BIBAKFull-Text 17-20
  Bruno Defude; Thierry Delot; Jose-Luis Zechinelli Martini; Nicolas Cenerario; Sergio Ilarri
Our work focus on data management in Vehicular Ad Hoc Networks (VANETs). Many pieces of information may be exchanged in such networks, for instance to warn drivers when a potentially dangerous event arises (accident, emergency braking, obstacle in the road, etc.) or to try to assist them (available parking spaces, traffic congestions, real-time traffic conditions, etc.). Existing systems only use the data exchanged to warn the driver. Then, the data is considered obsolete and is deleted.
   In this paper, we rather propose to aggregate the data once it becomes obsolete. Our objective is to produce additional knowledge to be used by drivers when no relevant data has been communicated by neighbouring vehicles. For example, it becomes so possible to dynamically detect potentially dangerous road segments or to determine the areas where the probability to find an available parking space is high when none has been received.
Keywords: VANETs, stockage et agrégation des données

Modèles et planification (Models and Planning)

SIMBA: méthodologie et plateforme de prototypage moyenne fidélité pour les systèmes interactifs mixtes BIBAKFull-Text 21-28
  Wafaa Abou Moussa; Emmanuel Dubois; Christophe Bortolaso; Pascal Salembier; Jean-Pierre Jessel; Cédric Bach
In this paper, we present SIMBA, a prototyping approach dedicated to Mixed Interactive Systems (MIS). This approach supports the use of an existing co-design process of MIS. SIMBA combines a «medium fidelity» prototyping platform based on simulation, and a model-driven development process. Simulation-based prototyping allows for a fast and inexpensive generation of mixed interactive prototypes. A model-driven development process enables such prototypes to be tightly coupled with design choices established in earlier design phases. It also supports an incremental evolution into the final, not simulated, MIS. The prototyping approach that we present is based on the identification of the roles of the different actors involved in a MIS development process and the collaboration between them. An augmented museum application is used throughout this paper to illustrate the proposed prototyping approach.
Keywords: développement incrémental, prototypage par simulation, systèmes interactifs mixtes
Multi-ressources K-Médians: un algorithme de placement de services web sur les réseaux sans fils municipaux BIBAKFull-Text 29-36
  Julien Gossa; Nipaul Long
Nowadays, numerous municipalities are laying free wireless Internet access infrastructures on. These infrastructures are a natural target for the deployment of Web services, such as mapping or multimedia content providing. Regarding the number of clients, ensuring their performances represents one particularly important challenge. Unfortunately, this challenge is hard because of Web services peculiarities: difficult to migrate and replicate, heterogeneous, and highly interdependent. Our proposal is an algorithm designed to build deployment plans for sets of Web services, according to their interdependency while ensuring performances and load balancing. We have shown the efficiency of this algorithm, called MRKM for Multi-Resources K-Median, on the Grid 5000 experimental platform.
Keywords: deployment plan, k-medians, placement, web services
Composing interactive systems by planning BIBAKFull-Text 37-40
  Yoann Gabillon; Gaëlle Calvary; Humbert Fiorino
User Interfaces (UIs) are mostly produced along a mental forward engineering process consisting in step by step transforming abstract descriptions into more concrete ones. Transformations make trade-offs between the context of use (<user, platform, environment>) and the usability properties that have been elicited as key. In ubiquitous computing, neither the context of use nor the user's objectives can be set at design time: they may opportunistically emerge with the arrival/departure of interaction resources and/or user's needs. As a result, there is a need for dynamically composing interactive systems. We explore multiagents planning for tackling the combinatory issue when sharing interaction resources among interactive systems and UI elements. The gateway between HCI and planning is performed using Model Driven Engineering (MDE). Experience shows that MDE is powerful for chaining domains together as well as for better understanding and improving domains languages.
Keywords: IDM, IHM, composition dynamique, contexte d'usage, planification

Mobilité et services (Mobility and Services)

Mobilité: fer de lance d'une organisation «Agile» BIBAKFull-Text 41-48
  Daniel Lang
The XXI century Enterprises work on their processes to try to optimize them. This Business Process Reengineering needs a permanent presence of actors. This research try to analyze the impact of Wireless Technology on the impact of optimization processes and display conclusions about a questionnaire sent to 32 enterprises dealing with Wireless services and their impacts on productivity.
Keywords: RTE, agility, mobility, nomads, process, wireless technology
Une approche robuste pour la prolongation de la durée de vie des réseaux ad hoc multimédias BIBAFull-Text 49-56
  J. M. Bahi; M. Eskandar; A. Mostefaoui
In wireless ad hoc networks, nodes are energy constrained. As they communicate far off destinations using intermediate relays, it may not be in interest of a node to expend its energy in relaying and consequently reducing its own lifetime. On the other hand, if all nodes decide not to always accept relay requests, the network throughput will drop dramatically i.e., the lifetime of the whole network is reduced. Obviously, from a single node point of view, these two extreme attitudes are opposite to its interest. We addressed this issue by proposing a novel distributed approach that guarantees tasks affectation to nodes with regard to their energy constraints. The key idea behind is to guarantee to all nodes that they share tasks in function of their energy provisions. In this paper, we tackle the problem of nodes mobility and its impact on the behavior of our proposed approach. We evaluated the performance of our approach under several scenarios and showed that it still improves the network lifetime.
Construire des applications fiables à base de services mobiles BIBAKFull-Text 57-64
  Alberto Portilla; Tan Hanh; Javier Alfonso Espinosa-Oviedo; Christine Collet; Genoveva Vargas-Solar
Along with the emergence of ubiquitous computing there is a need for building reliable and secure applications that provide access to information in a continuous way. In such a context, access to resources and applications must be done in a flexible way through services that come up as a new paradigm for programming and organizing operations. In this paper we present an approach for building reliable mobile applications based on services oriented paradigm and the use of a contract based coordination model. Thanks to contracts, it is possible to associate a personalized behavior to a flow describing the logic of a mobile services based application. Contracts ensure transactional properties at execution time in the presence of exceptions and make applications aware of their execution context (QoS).
Keywords: application à base de services, comportement transactionnel, coordination de services, propriétés non fonctionnelles

Pédagogie (Pedagogy)

Un système d'apprentissage pervasif intégrant des activités de travail et de formation BIBAKFull-Text 65-72
  Cuong Pham-Nguyen; Serge Garlatti
In the p-LearNet project, we are interested in TEL systems integrating context-aware corporate learning and working activities for e-retail (shops and hypermarkets). The main issues of the p-LearNet project are: work-integrated learning and customer learning support whatever the place, the time, the organisational and technological contexts of the individual or collective learning and working processes. We propose an adaptive and context-aware model of scenario for a pervasive learning system. This model enables us to choose how to achieve activities according to the current situation. The scenario model is based on a hierarchical task model having the task/method paradigm -- methods define how to achieve a task, a task represents an activity. The context-aware adaptation process selects the relevant methods according to the current situation.
Keywords: adaptation, apprentissage pervasif, contextuel, modèle de tâches hiérarchiques, paradigme tâche/méthode, situation d'apprentissage et de travail
L'informatique omniprésente pour les communautés de pratique autour de contenus pédagogiques BIBAKFull-Text 73-76
  Amel Bouzeghoub; Pierre-André Caron; Claire Lecocq; Xavier Le Pallec; José Rouillard
We present in this paper the interest of ubiquitous computing for the so called contextualized forums. These forums allow communities of practice exchanging and sharing experiences or situations already lived by using learning documents to classify these exchanges. These forums contain a lot of information which contribute to improve classical training. We study here ubiquitous computing possibilities to use this type of forums in order to improve professional training to business process by helping the user to put into practice his/her acquisition. The developed application is being tested and works principally on smartphones.
Keywords: assistance, contextualized forum, personalization, ubiquitous computing
Vers une intégration du RFID et de la cartographie pour une visite autonome du musée des arts et métiers BIBAKFull-Text 77-80
  S. Merdassi; R. Yahia-Aissa; R. Pellerin; I. Réchiniac-Astic; E. Gressier_Soudan
We describe current works related to technological building blocks able to help people visiting museums. We present the use of RFID tags through a mobile phone and web enabled indoor maps. The paper concludes with future works.
Keywords: Google map, RFID, interaction design, mobile handset, museum


Follow-me: application de manipulation de points d'intérêt spatio-temporels sur dispositif mobile BIBAKFull-Text 81-82
  Joël Viala
Display of data on maps is more and more present on mobile device. But difficulties to display them on small screen (readability, information reduced.) are also introduced. Follow-me offers innovative features / interactions, and management of time / geo-tagging interest points. In this paper, we outline the different features of the prototype.
Keywords: map, mobile device, time / geo-tagging
XWiki concerto: un wiki sur réseau P2P supportant le nomadisme BIBAKFull-Text 83-85
  Gérôme Canals; Pascal Molli; Julien Maire; Stéphane Laurière; Esther Pacitti; Mounir Tlili
This paper describes the demonstration of the XWiki Concerto system. XWiki Concerto is a a P2P wiki that supports mobile users. Each XWiki server is the network is extended with a replication manager that propagates local changes to remote servers and merges concurrent changes. The demonstration is based on a scenario in which different servers are used to concurrently edit a wiki page. One of the servers is then disconnected from the network but continue to be used to edit the page. The different copies are then reconciliated when the server is reconnected.
Keywords: P2P wiki, merge, mobile users, optimistic replication
Gestion des flux dans les réseaux mobiles BIBAKFull-Text 87-88
  Antoine Boutet; Benoit Le Texier; Nicolas Montavont; Tanguy Ropitault; César Viho
The Network Mobility Basic Support (NEMO BS) protocol is the IETF standard to support mobility of entire IPv6 networks. Every network movements are fully transparent to the nodes located inside the mobile network without interruption on their ongoing communications. In addition to the mobility support, a mobile router may be equipped with several wireless network interfaces in order to connect heterogeneous access technologies. These networks can be available at the same time, and consequently the mobile network may benefit from these multiple paths to connect the Internet. All access networks have different characteristics in terms of bandwidth, latency, cost, etc. It is therefore important to install flow policies on an embedded mobile network in order to distribute, adapt or filter communications according to preferences of the operator and the availability of the technologies. In this demonstration, we propose to show how to apply flow policies on an embedded mobile network inside a vehicule.
Keywords: IPv6, flow management, mobile IPv6, network mobility basic support (NEMO BS)
Annotation contextuelle automatique avec PhotoMap BIBAKFull-Text 89-90
  Windson Viana; Marlène Villanova-Oliver; Jérôme Gensel; Hervé Martin
We present a mobile and context-aware system, called PhotoMap that provides semi-automatic annotation about the spatial, temporal and social contexts of a photo. (i.e., where, when, who and what was nearby). The PhotoMap application captures the photo shot context when a user takes a picture with her camera phone. The mobile client gets the geographic position of the device, date and time information, bluetooth addresses of the nearby devices. PhotoMap explores these gathered metadata to infer high level contextual information such as, nearby user's friends, weather conditions, device address, and nearby important objects. PhotoMap uses these metadata for organizing, sharing and retrieving the photo files.
Keywords: FOAF, context, ontology, pervasive systems
OIDE: un outil pour la conception et le développement d'interfaces multimodales BIBAKFull-Text 91-92
  Marcos Serrano; David Juras; Michael Ortega; Laurence Nigay
Multimodal interaction software development presents a particular challenge because of ever increasing number of novel interaction devices. In this paper, we present the OpenInterface Interaction Development Environment (OIDE) that addresses the design and development of multimodal interfaces. To illustrate our approach, we present a multimodal slideshow implemented with our tool.
Keywords: development environment, multimodal intrefaces, prototyping