Event detection and analysis with respect to public opinion and sentiment in social media is a broad and well-addressed research topic. However, the characteristics and sheer volume of noisy Twitter messages make this a difficult task. This demonstration paper describes a TWItter event Summarizer and Trend detector (TWIST) system for event detection, visualization, textual description, and geo-...

H 2 geo-storage has been suggested as a key technology with which large quantities of can be stored and withdrawn again rapidly. One option is currently explored storage in sedimentary geologic formations are geographically widespread potentially provide space. The mechanism keeps the buoyant subsurface structural trapping where caprock prevents from rising by capillary forces. It therefore imp...

The purpose of this study was to determine the accuracy of GPS use for a geosynchronous (GEO) satellite. Current missions at GEO altitude mainly use traditional ranging for orbit determination. With changing mission requirements and the increase in the number of GEO missions, utilizing GPS signals is becoming an increasingly attractive alternative for position and timing determination. A previo...

The current international society has entered an era of large-scale power transfer. Government interests have gradually transferred from national strength to national influence. As such, how to quantitatively present the fuzzy geopolitical influence (i.e., geo-influence) has attracted greater attention from scholars. The proposed concept of geo-influence conforms to this trend of power structur...

Geo-replication is the process of maintaining copies of data at geographically dispersed datacenters for better availability and fault-tolerance. The distinguishing characteristic of geo-replication is the large wide-area latency between datacenters that varies widely depending on the location of the datacenters. Thus, choosing which datacenters to deploy a cloud application has a direct impact...

Currently, use of geo-location databases is the preferred method for detecting TV white spaces by white space devices in the US. The approach protects TV transmitters and receivers from interference sufficiently by keeping a record of the TV transmitters’ information, and relying on propagation models to determine the protection area of the TV transmitters. Thus accurate radio propagation by th...