Context awareness

About: Context awareness is a research topic. Over the lifetime, 5790 publications have been published within this topic receiving 119944 citations.

Context-aware pervasive service composition and its implementation

Abstract: Incorporating service composition and pervasive computing into managing users' complex everyday activities calls for the Pervasive Service Composition paradigm for everyday life In this paper, we propose the concept of Context-Aware Pervasive Service Composition (CAPSC), which aims at enabling a pervasive system to provide user service compositions that are relevant to the situation at hand We investigate CAPSC requirements and design a CAPSC architecture by taking into account context-aware peer coordination, context-aware process service adaptation, and context-aware utility service adaptation We present a proof of concept application prototype as well

A location aware mobile tourist guide selecting and interpreting sights and services by context matching

Abstract: Most tourists exploring a destination either join a guided tour or walk on their own using maps. Neither are their individual preferences nor the actual situation considered. These tours are strongly inflexible. The ideal is an intelligent guide taking care of the whole tour organisation and execution in time. This is the main objective of the dynamic tour guide (DTG). The DTG is a mobile agent that selects attractions, plans an individual tour, provides navigational guidance and offers location based interpretation. This kind of ambient intelligence is based on the analysis of all available context information to support the tourist in any possible way with the help of a mobile device.

Context management for the provision of adaptive services to roaming users

Abstract: Various types of sophisticated networks and terminals are used for the provision of thirdgeneration services, and even more complicated ones are designed for 4G systems. Roaming users will rely on new kinds of wireless networks and terminals to offer mobility and make multimedia services available everywhere. They will, of course, expect continuous access to personalized services from any place, transparently and independent of the underlying network technology and the terminal or point of access. Virtual home environment features were specified and implemented in order to satisfy these requirements in 3G systems. The enhanced role of IP in 4G systems and the assimilation of WLAN technology will enable further advances toward pervasive computing and the pursuit of corn-, plete context awareness in state-of-the-art applications and services. 4G services can he smarter and more adaptive by taking advantage of all types of context available to them within a well defined context management framework. This article presents results from work carried out over the last few years at NTUA,’ bringing us closer to the definition of such a flexible framework for cfficient management of content, which will he able to support the development of advanced telecommunications services and integrated real-time information provision and processing systems.

From implicit to touching interaction: RFID and NFC approaches

Abstract: Intelligent environments need interactions capable of detecting users and providing them with good-quality contextual information. In this sense we adapt technologies identifying and locating people adjusting their requirements. However it is necessary to analyze some important features in order to compare the implicit interaction, closer to the users and more natural, in front of a new interaction form that we called ldquotouching interactionrdquo or interaction by touch. In this paper we present the adaptability of two technologies the radiofrequency identification (RFID) and the near field communication (NFC). In the first one, the interaction is more appropriate into intelligent environments but, in the second one, the same technology RFID placed into mobile phones, produces context-awareness capabilities by a single user interaction, so the benefits to adapting NFC technology are important. In addition, we propose changes of the architecture, the model, the visualization of information and the interaction.

User expectations for mobile mixed reality services: an initial user study

Abstract: Mixed reality, i.e. the integration and merging of physical and digital worlds, has become an integral part of the ubicomp research agenda. Often, however, in development of first technology concepts and prototypes, the expectations of potential users are not considered, and the development easily becomes technology-driven. To understand the expectations and needs of potential users of future mobile mixed reality (MMR) services, we conducted altogether five focus group sessions with varying user groups. We investigated the early impressions and expectations of MMR as a technology by evaluating various usage scenarios. Based on this initial study, we found relevance issues (what information to receive, how and when) and the reliability of MMR information to be the most salient elements that were anticipated to affect the overall user experience. In mobile and busy situations the MMR information content has to be something that is very important or useful for the user, especially if receiving the information or interacting with it draws the user's attention away from the tasks executed in the real world.