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This paper proposes an architecture for managing and distributing context information from an AAL (Ambient Assisted Living) environment to the cloud. The architecture, with semantic features, includes the processing of the sensed data using QoC (Quality of Context) parameters and data transport using SDN (Software-defined Networking). The experiments showed that the semantic context processing allows...
Context-awareness is becoming an important foundation of adaptive mobile systems, however, techniques for discovering contextually relevant Web content and Smart Devices (i.e., Smart Resources) remain consigned to small-scale deployments. To address this limitation, this paper introduces Ambient Ocean, a Web search engine for context-aware Smart Resource discovery. Ocean provides scalable mechanisms...
In ubiquitous systems control of privacy settings will be increasingly difficult due to the pervasive nature of sensing and communication capabilities. We identify challenges for privacy decisions in ubiquitous systems and propose a system for in situ privacy decision support. When context changes occur, the system adapts a user's privacy preferences to the new situation. As a consequence, recommendations...
In spite of the fact that many of the proposed context awareness frameworks allow scalability and dynamic interaction with heterogeneous devices disseminated in the environment, very often they are not able to fully profit from the semantic technology to supervise and manage the environment. Indeed, using ontologies allows us to integrate information coming from heterogeneous sources and to share...
A Data Sharing Agreement is an agreement among contracting parties regulating how they share data under certain contextual conditions. Upon the definition phase, where the parties negotiate the respective authorizations on data covered by the agreement, the resulting policy may be analysed in order to identify possible conflicts or incompatibilities among authorizations clauses. In this paper, we...
This paper describes the Context Awareness Framework developed for the HYDRA Middleware Project. The HYDRA project aims to develop middleware to support intelligent networked embedded system based on a service-oriented architecture, deployable on both new and existing networks of distributed wireless and wired devices. A well developed Context Awareness Framework (CAF) is crucial for the success of...
The pervasive computing systems are weaving themselves in our daily life, collecting private user information invisibly, which made privacy a major issue in these environments. The huge number of interactions between users and pervasive devices necessitate the mapping of user defined privacy policies into data level privacy policies which can be used by pervasive devices. These data level policies...
In this paper, we design and implement semantic translation engine to provide continuous among several devices in ubiquitous computing environment. We use many kinds of devices and services according to the location, so it is difficult to provide seamless services among the devices. The proposed engine performs transform of protocols, frame rates, bit rates, and so on. Using our scheme, users can...
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