Context-awareness is one of the drivers of the ubiquitous computing paradigm. Well-designed context modeling and context retrieval approaches are key p- requisites in any context-aware system. Location is one of the primary aspects of all major context models — together with time, identity and activity. From the technical side, sensing, fusing and distributing location and other context information is as important as providing context-awareness to applications and services in pervasive systems. Thematerialsummarizedinthisvolumewasselectedforthe1stInternational Workshop on Location- and Context-Awareness (LoCA 2005) held in coope- tion with the 3rd International Conference on Pervasive Computing 2005. The workshop was organized by the Institute of Communications and Navigation of the German Aerospace Center (DLR) in Oberpfa?enhofen, and the Mobile and Distributed Systems Group of the University of Munich. During the workshop, novel positioning algorithms and location sensing te- niques were discussed, comprising not only enhancements of singular systems, like positioning in GSM or WLAN, but also hybrid technologies, such as the integration of global satellite systems with inertial positioning. Furthermore, - provements in sensor technology, as well as the integration and fusion of sensors, were addressed both on a theoretical and on an implementation level. Personal and con?dential data, such as location data of users, have p- found implications for personal information privacy. Thus privacy protection, privacy-oriented location-aware systems, and how privacy a?ects the feasibility and usefulness of systems were also addressed in the workshop.
Author(s): Vidal Ashkenazi (auth.), Thomas Strang, Claudia Linnhoff-Popien (eds.)
Series: Lecture Notes in Computer Science 3479 : Information Systems and Applications, incl. Internet/Web, and HCI
Edition: 1
Publisher: Springer-Verlag Berlin Heidelberg
Year: 2005
Language: English
Pages: 380
Tags: Information Systems Applications (incl.Internet); Information Storage and Retrieval; Computer Communication Networks; Personal Computing; User Interfaces and Human Computer Interaction; Communications Engineering, Networks
Front Matter....Pages -
Location Awareness: Potential Benefits and Risks....Pages 1-1
Context Modelling and Management in Ambient-Aware Pervasive Environments....Pages 2-15
A Context Architecture for Service-Centric Systems....Pages 16-25
Towards Realizing Global Scalability in Context-Aware Systems....Pages 26-39
Towards LuxTrace: Using Solar Cells to Measure Distance Indoors....Pages 40-51
Three Step Bluetooth Positioning....Pages 52-62
MoteTrack: A Robust, Decentralized Approach to RF-Based Location Tracking....Pages 63-82
Correcting GPS Readings from a Tracked Mobile Sensor....Pages 83-94
Web-Enhanced GPS....Pages 95-104
The COMPASS Location System....Pages 105-112
The xPOI Concept....Pages 113-119
The GETA Sandals: A Footprint Location Tracking System....Pages 120-131
Improving the Accuracy of Ultrasound–Based Localisation Systems....Pages 132-143
Position Estimation of Wireless Access Point Using Directional Antennas....Pages 144-156
Exploiting Multiple Radii to Learn Significant Locations....Pages 157-168
Modeling Cardinal Directional Relations Between Fuzzy Regions Based on Alpha-Morphology....Pages 169-179
Commonsense Spatial Reasoning for Context–Aware Pervasive Systems....Pages 180-188
Contextually Aware Information Delivery in Pervasive Computing Environments....Pages 189-197
Classifying the Mobility of Users and the Popularity of Access Points....Pages 198-210
Prediction of Indoor Movements Using Bayesian Networks....Pages 211-222
Geo Referenced Dynamic Bayesian Networks for User Positioning on Mobile Systems....Pages 223-234
Issues and Requirements for Bayesian Approaches in Context Aware Systems....Pages 235-243
Context-Aware Collaborative Filtering System: Predicting the User’s Preference in the Ubiquitous Computing Environment....Pages 244-253
Mobile Context Inference Using Low-Cost Sensors....Pages 254-263
Where am I: Recognizing On-body Positions of Wearable Sensors....Pages 264-275
Context Obfuscation for Privacy via Ontological Descriptions....Pages 276-288
Share the Secret: Enabling Location Privacy in Ubiquitous Environments....Pages 289-305
Filtering Location-Based Information Using Visibility....Pages 306-315
Introducing Context-Aware Features into Everyday Mobile Applications....Pages 316-327
Predicting Location-Dependent QoS for Wireless Networks....Pages 328-340
Location-Based Services for Scientists in NRENs....Pages 341-349
Towards Smart Surroundings: Enabling Techniques and Technologies for Localization....Pages 350-362
Proximation: Location-Awareness Though Sensed Proximity and GSM Estimation....Pages 363-376
Back Matter....Pages -
