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Context awareness

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


Papers
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Book ChapterDOI
23 Jun 2008
TL;DR: This paper presents a proposal for a context-aware framework, organized according to a general purpose architecture, centred around an ontological context representation that provides the vocabulary upon which software agents interoperate and perform rule-based reasoning.
Abstract: This paper presents a proposal for a context-aware framework. The framework is organized according to a general purpose architecture, centred around an ontological context representation. The ontology provides the vocabulary upon which software agents interoperate and perform rule-based reasoning, in order to determine the system response to context changes. The system components and their coordinated operations are described by providing a simple example of concrete application in a home-care scenario.

32 citations

Proceedings ArticleDOI
18 Oct 1999
TL;DR: A wearable context-awareness component that derives general context information from low-level sensors is described that can be used by wearables or other personal technologies in a body network via a simple protocol.
Abstract: We describe the design of a wearable context-awareness component that derives general context information from low-level sensors. Derived context information is application-independent and can be used by wearables or other personal technologies in a body network via a simple protocol. We built the context-awareness component into a tie, stressing its design as an accessory.

32 citations

Journal ArticleDOI
TL;DR: The current state of the art of CPS security is surveyed, the issues surrounding secure control are identified, and the extent to which context information may be used to improve security and survivability of CPS is investigated.
Abstract: The integration of physical systems and processes with networked computing has led to the emergence of a new generation of engineered systems, called Cyber-Physical Systems (CPS). These systems are large networked systems of systems, in which a component system may itself be a grid. In this paper we survey the current state of the art of CPS security, identify the issues surrounding secure control, and investigate the extent to which context information may be used to improve security and survivability of CPS.

32 citations

01 Jan 2003
TL;DR: The idea of this paper is to suggest a basic, semantically founded, uniform data structure that is simple but still expressive enough to cover all representational needs.
Abstract: Ubiquitous computing will have a unifying influence on user modeling, context-awareness and resource-adaptivity. The idea of this paper is to suggest a basic, semantically founded, uniform data structure that is simple but still expressive enough to cover all representational needs. An extended triple, which is based on RDF resources is introduced as well as an XML application for so called ”Situational Statements”.

32 citations

Proceedings ArticleDOI
11 Jul 2011
TL;DR: A novel dependability strategy is introduced supporting advanced redundancy management, aiming to autonomously tune its internal configuration in view of changes in context, and it is apparent from preliminary experimentation that this strategy can effectively achieve an optimal trade-off between service reliability and performance-related factors such as timeliness and the degree of redundancy employed.
Abstract: Software components are expected to exhibit highly dependable characteristics in mission-critical applications, particularly in the areas of reliability and timeliness. Redundancy-based fault-tolerant strategies have long been used as a means to avoid a disruption in the service provided by the system in spite of the occurrence of failures in the underlying components. Adopting these fault-tolerance strategies in highly dynamic distributed computing systems, in which components often suffer from long response times or temporary unavailability, does not necessarily result in the anticipated improvement in dependability.In fact, as these dependability strategies are usually statically predefined and immutable, a change in the operational status (context) of any of the components involved may very well jeopardise the schemes' overall effectiveness. In this paper, a novel dependability strategy is introduced supporting advanced redundancy management, aiming to autonomously tune its internal configuration in view of changes in context. It is apparent from our preliminary experimentation that this strategy can effectively achieve an optimal trade-off between service reliability and performance-related factors such as timeliness and the degree of redundancy employed.A prototypical service-oriented implementation of the proposed adaptive fault tolerant strategy is presented thereafter, leveraging WS-* specifications to gather and disseminate contextual information.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20236
202227
2021105
2020184
2019224
2018258