Tornado Frequency and its Large-Scale Environments Over Ontario, Canada

Detection of Tornado Frequency Trend Over Ontario, Canada

An upward trend in Ontario tornado frequency (about 1.6 tornadoes/decade with the statistically significant level at least at 95%) is identified using three independent approaches. The first method is the conventional linear regression method that had no disturbance to the original tornado time series. The second approach is to employ the Mann-Kendall test with consideration of removing a lag o...

An Efficient Data Replication Strategy in Large-Scale Data Grid Environments Based on Availability and Popularity

The data grid technology, which uses the scale of the Internet to solve storage limitation for the huge amount of data, has become one of the hot research topics. Recently, data replication strategies have been widely employed in distributed environment to copy frequently accessed data in suitable sites. The primary purposes are shortening distance of file transmission and achieving files from ...

Large scale collaborative virtual environments

Networking Large-Scale Virtual Environments

The virtual environment research community is focusing on the human-computer interaction model for fully-articulated 3D humans in the networked virtual environment. As that works moves forward, there is the desire to internetwork large numbers of players. The NPSNET Research Group is in the forefront of that work and is focusing on the network and software architecture necessary to support larg...

Localisation in large-scale environments

This paper describes a localisation framework that combines the accuracy of feature maps with the scalability of topological maps. The map is structured as a graph of nodes where each node defines a local region feature map. This breaks the localisation process into a combination of regional feature tracking and node-to-node context switching. As part of the practical implementation of the loca...