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With the development of mobile sensing and mobile social networking techniques, mobile crowd sensing and computing (MCSC), which leverages heterogeneous crowdsourced data for large-scale sensing, has become a leading paradigm. Built on top of the participatory sensing vision, MCSC has two characteristic features: it leverages heterogeneous crowdsourced data from two data sources: participatory sensing...
We present Back Talk, a prototype that enhances video viewing for distributed viewers. The system captures engagement, general attentiveness, and viewer comments; the output auditory environment comprises audio cues triggered by sensed data, and comments.
The constant advent of powerful mobile devices has raised the potential of building novel context-aware applications. These applications let the users enjoy a better experience by sensing their context and automating tasks that would otherwise require significant user attention. This paper presents two context-aware applications, built on top of the MUSIC middleware's context management framework...
This article describes several technical aspects of mobile devices, sensor networks, web technologies, multimedia applications, and context sensitive services in information systems for museums developed at the author's university. Additionally, this paper describes several ideas and techniques of Green IT. It examines key features of the technologies and the systems, shows multiple methods of using...
Rapidly evolving and widely-used smart phones provide many novel applications and services, making it possible to gather information from any location. Recent advances in technology have introduced many useful functions to assist users of outdoor mobile devices by sensing nearby conditions, such as the user's current location and even the user's slightest motions. Among these growing capabilities...
The increase of mobile and interconnected devices demands for equally ubiquitous and mobile applications. Due to the heterogeneity of devices, applications have to adapt themselves to the environment they are executed in. This requires context management in the environment and context-sensitivity of the application. In this paper, we present a generic context service with a novel generic context model...
The objective of this invited talk is to present selected visions of ubiquitous computing and ambient communication based on the notion of the disappearing computer and to reflect on the resulting challenges for designing experiences in future smart environments. Our approach places the human at the centre of our design considerations and is based on exploiting the affordances of real objects by augmenting...
In this paper we present a knowledge-driven model for mobile learning based on the semantic Web. The knowledge model uses a global ontology space and a unified reasoning mechanism to integrate and aggregate knowledge describing both system-centric and user-centric context information. The reasoning engine perceives, understands, and translates context changes into new adaptation constraints in the...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
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