| 1. |
- Dobslaw, Felix, 1983-, et al.
(författare)
-
An Object-Oriented Model in Support of Context Aware Mobile Applications
- 2010
-
Ingår i: Mobile Wireless Middleware, Operating Systems, and Applications. - Berlin Hedielberg : Springer Verlag. - 9783642177576
-
Konferensbidrag (refereegranskat)abstract
- Intelligent and context-aware mobile services require users and applications to share information and utilize services from remote locations. Thus, context information from the users must be structured and be accessible to applications running in end-devices. In response to this challenge, we present a shared object-oriented meta model for a persistent agent environment. The approach enables agents to be context aware facilitating the creation of ambient intelligence demonstrated by a sensor-based scenario. The agents are context-aware as agent actions are based upon sensor information, social information, and the behavior of co-agents.
|
|
| 2. |
- Kanter, Theo, 1954-, et al.
(författare)
-
Distributed Context Support for Ubiquitous Mobile Awareness Services
- 2009
-
Ingår i: 2009 Fourth International ICST Conference on Communications and Networking in China. ChinaCom'09.. - : IEEE conference proceedings. - 9781424443376 ; , s. 869-873
-
Konferensbidrag (refereegranskat)abstract
- Context-aware applications and services require ubiquitous access to context information about the users or sensors such as preferences, spatial & environmental data, available connectivity, and device capabilities. Systems for the brokering or the provisioning of context data via wireless networks do so with centralized servers or by employing protocols that do not scale well with real-time distribution capabilities. In other cases, such as the extending of presence systems, the data models are limited in expressive capabilities and consequently incur unnecessary signaling overhead. This paper presents a distributed protocol, the Distributed Context eXchange Protocol (DCXP), and an architecture for the real-time distribution of context information to ubiquitous mobile services: We present the architecture and its principle operation in a sample ubiquitous mobile awareness service. Preliminary results indicate that our approach scales well for the ubiquitous provision of context data in real-time to clients on the Internet via 3G wireless systems. Performed measurements show that DCXP can reduce the time to process context data with a factor of 20 compared to similar approaches.
|
|
| 3. |
- Kanter, Theo, 1954-, et al.
(författare)
-
The MediaSense Framework
- 2009
-
Ingår i: Proceedings - 2009 4th International Conference on Digital Telecommunications, ICDT 2009. - New York : IEEE conference proceedings. - 9780769536958 ; , s. 144-147
-
Konferensbidrag (refereegranskat)abstract
- Mobile telecommunication is evolving rapidly. People no longer only communicate with each other regardless of time and place, but also share other information that is important for tasks with which they are involved. In response to this growing trend the MediaSense framework addresses the intelligent delivery of any information to any host, anywhere, based on context-aware information regarding personal preferences, presence information, and sensor values. This includes another challenge to achieve seamless delivery, especially of multimedia content, and multimodal services via heterogeneous connections.
|
|
| 4. |
- Walters, Jamie, 1982-
(författare)
-
Distributed Immersive Participation : Realising Multi-Criteria Context-Centric Relationships on an Internet of Things
- 2014
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Advances in Internet-of-Things integrate sensors and actuators in everyday items or even people transforming our society at an accelerated pace. This occurs in areas such as agriculture, logistics, transport, healthcare, and smart cities and has created new ways to interact with and experience entertainment, (serious) games, education, etc. Common to these domains is the challenge to realize and maintain complex relations with any object or individual globally, with the requirement for immediacy in maintaining relations of varying complexity. Existing architectures for maintaining relations on the Internet, e.g., DNS and search engines are insufficient in meeting these challenges. Their deficiencies mandate the research presented in this dissertation enabling the maintenance of dynamic and multi-criteria relationships among entities in real-time in an Internet-of-Things while minimizing the overall cost for maintaining such context-centric relationships. A second challenge is the need to represent nearness in context-centric relationships, since solutions need to build on what is closely related.The dissertation shows that the proximity on relations can be used to bring about the scalability of maintaining relationships across the IoT. It successfully demonstrates the concept and feasibility of self-organizing context-centric overlay networks for maintaining scalable and real-time relationships between endpoints co-located with associated physical entities. This is complemented by an object model for annotating objects and their relationships as derived and defined over the underpinning context interactions. Complementing measures of nearness are added through a non-metric multi-criteria approach to evaluating the notion of context proximity. A query language and an extension to the publish-subscribe approaches achieves distributed support for discovering such relationships; locating entities relative to a defined hyper-sphere of interest. Furthermore, it introduces adaptive algorithms for maintaining such relationships at minimal overall costs. The results demonstrate the feasibility of moving towards context-centric approaches to immersion and that such approaches are realizable over vast and distributed heterogeneous collections of user and their associated context information.
|
|
