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Accessing online social media content on underground metro systems is a challenge due to the fact that passengers often lose connectivity for large parts of their commute. As the oldest metro system in the world, the London underground represents a typical transportation network with intermittent Internet connectivity. To deal with disruption in connectivity along the sub-surface and deep-level underground...
Open WiFi access points (APs) are demonstrating that they can provide opportunistic data services to moving vehicles. We present <monospace>CrowdWiFi</monospace>, a novel system to look up roadside WiFi APs located outdoors or inside buildings. <monospace>CrowdWiFi</monospace> consists of two components: online compressive sensing (CS) and offline crowdsourcing. Online CS presents...
Volunteered Geographic Information (VGI) and Crowdsourcing are kinds of acquisition modes of geographic information, as well as information production and dissemination way with the development of information technology applications. In this paper, on the basis of analyzing application of VGI and crowdsourcing modes on disaster information management system, the disaster information management system...
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