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Every modern portal ships with some form of internal document library portlet tools that can be used to enable groups to share files. Unfortunately, certain limitations - that the portlet can only view data managed directly by the portal and that document and data files are the only resource that can be browsed - make these tools less valuable in many real-world collaborations. This paper describes...
This paper describes our first step towards the realization of complex and large scale cross-organization virtual observatories by presenting a new semantically-enhanced ldquosensor network as a servicerdquo (SNaaS) framework, which can repurpose existing sensor networks as needed and aggregate and fuse heterogeneous sensors into new virtual sensors in near-real-time. The architecture of this system...
This paper presents a Web 2.0 virtual observatory framework applied in an environmental watershed research context, where users not only can access existing sensor data such as the USGS (United States Geological Survey) rain gage data in near real-time, but also can create and share virtual sensors and trigger their associated workflows on-the-fly. Categories of virtual sensors are discussed and community...
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