It is important to verify the absence of deadlocks in asynchronous circuits.Much previous work relies on a reachability analysis of the circuits states,with the
In this paper,we investigate the problem of determining regions in 3D scene visible to some given viewpoints when obstacles are present in the scene.We assume t
There is an abrupt boundary between two well-developed wetland forests, a stand consisting of a broad-leaved, nitrogen-fixer Alnus japonica and a stand of the n