Abstract: An embodiment of the invention is a method of integrating public and private calendars on a user-specific basis, such that a user is able to view multiple shared calendars created by different users. A system maintains event data relating to a future event, and receives a request to add that event to one of the user's calendars. The system creates a link between that event and the calendar, configuring the link so that updates to the event are automatically reflected on the calendar. It further enables the user to modify attributes associated with the event.

Abstract: In a sparse sensor array for detecting the progression of a cloud of gas within a confined space, a method is disclosed for estimating a distribution of the cloud of gas throughout the confined space. The method includes determining at each interval a plurality of functions representing possible distributions of the gas cloud by a Gaussian process, employing a particle filtering process to predict the progression of each such function at a subsequent sampling instant, using a diffusion equation for the gas cloud, attaching a likelihood value to each function at the subsequent sampling instant, and determining a revised set of functions with associated likelihood values, and repeating the above steps.