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Data aggregation for VANETs is considered a vital building block for many applications due to its bandwidth saving potential. In this paper, we propose a novel context aware data aggregation technique for VANETs. The data aggregation is done by the cluster head based on the context i.e. vehicle speed and density to reduces the required bandwidth for periodic data dissemination. The proposed technique...
The Internet of Things (IoT) has the potential to transform our daily lives and societies. This is, at least in part, due to its massively distributed and ubiquitous nature. To realize the benefits of the IoT, security and privacy issues associated with the use of the IoT need to be identified and addressed properly. In this paper, our focus is on protecting the privacy of the users of location-based...
This paper reports on a user study to gauge user interaction with RSS based mobile electronic updates from a Moodle based virtual learning environment. The electronic updates can be received in three dimensions of context: time, location and activity. The study aims to compare and evaluate the effectiveness of these context dimensions by comparing the level of user engagement. The mobile updates relate...
Service-Oriented Architecture (SOA) provides a framework for service composition and reconfiguration. In addition to making composition decisions by considering functional attributes, technology for composition by meeting non-functional requirements such as QoS is also needed. In this paper, we present an approach to compose business process by considering context-based service reputation. Since some...
Data-oriented applications have experienced a huge growth mainly in distributed settings. The increasing amount of available data has made it hard for users to find the information they need in the way they consider relevant. To help matters, a user-centric approach may be used to enhance query answering and, particularly, provide query personalization. In this work, we address the issue of personalizing...
Context-aware systems offer entirely new opportunities for application developers and for end users by gathering context data and adapting systems' behavior accordingly. In this paper, we propose a Context Aware ESB (CA-ESB) that will publish and discover services based on location context. The main modules of the framework consist of Context Provider (senses location context), Context Aware Logic...
Context is important situational details, yet poorly utilized in interactive computing. The fact is that it can have impact on the trust decision to make. Motivated by that, we discuss and formalize functions of dynamic trust computation model based on context-aware in P2P environments. We firstly present the definition of context-aware and trust, and then give the trust computation including directed...
By utilizing various sorts of contextual data acquired from the users' devices, advance context-aware services and applications can be developed. But the current context management systems are based on server-client approach which hinders their widespread adoption in an ad-hoc network. In addition, performance issues introduced because of context dependency in a ubiquitous environment still need to...
With rapid progress on ubiquitous technologies, various services become available at anytime and anywhere. One of hot topics in ubiquitous computing is context-aware services, which provide the services at proper time and proper place, in a proper way personalized to a user. However, there may be conflicts of services among users whose contexts are overlapped. Moreover, a context-aware service convenient...
The increasing popularity of personal wireless devices has raised new demands for the efficient discovery of heterogeneous devices and services in pervasive environments. The existing syntactic level service matching mechanisms such as Jini, UPnP, etc., are limited to syntactic comparisons based on attributes or interfaces. In order to overcome the limitations in these approaches, there has been an...
Conflict Resolution in context-aware computing is getting more significant attention from researchers as ubiquitous computing environments take into account multiple users. For multi-user ubiquitous computing environments, conflicts among users' contexts need to be detected and resolved. For this, application developers or end-users specify conflicts situations, and the underlying ubiquitous computing...
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