Wireless Sensor Networks (WSNs) have promising industrial applications, since they reduce the gap between traditional enterprise systems and the real world. However, every particular application requires complex integration work, and therefore technical expertise, effort and time which prevents users from creating small tactical, ad-hoc applications using sensor networks. Following the success of Web 2.0 "mashups", we propose a similar lightweight approach for combining enterprise services (e.g. ERPs) with WSNs. Specifically, we discuss the traditional integration solutions, propose and implement an alternative architecture where sensor nodes are accessible according to the REST principles. With this approach, the nodes become part of a "Web of Things" and interacting with them as well as composing their services with existing ones, becomes almost as easy as browsing the web.

The notion of awareness has received a lot of attention in the CSCW literature for quite some time now. Because it cannot be very precisely and uniquely defined, this notion covers a range of issues and is critical in very different situations. This is also true in the particular context of the WWW, where awareness has more than one facet. One objective for this paper is to give an overview of the field, by reviewing different awareness categories and by showing how they relate to Web-based systems. The discussion also gives an overview of the work done by the author in this area. Another goal for the paper is to introduce the papers presented at the CSCW'2000 Workshop on Awareness and the WWW with a short summary. ABSTRACTWith the increasing proliferation of chat applications on the Web, the old vision of "adding people" to the Web, is becoming a reality. While infrastructure seems to be scalable and stable enough to support collaboration, the user model is not well defined yet. In particular, there seems to be a certain lack of abstraction and granularity in existing solutions. This paper studies the current restrictions of two common concepts in collaboration on the Web, namely "people awareness" and "document awareness", and proposes a more general one that we call "collection awareness", which seems more adequate to the graph structure of the Web. We introduce a new medium for supporting this higher-level awareness: "Livemaps".

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Abstract; Arguing for the need of increasing social awareness on the World Wide Web, we describe a user interface based on the metaphor of windows bridging electronic and physical spaces. We present a system that, with the aim of making online activity perceptible in the physical world, makes it possible to hear people visiting one's website. The system takes advantage of the seamless and continuous network connection offered by handheld Web-appliances such as personal digital assistants.