We study the complexity of the reachability problem for a new subclass of Petri nets called simple-circuit Petri nets, which properly contains several well known subclasses such as...
: In this paper a comparison is provided between the membrane computing systems and the graphical interfaces of operating systems. A membrane computing system is a computing model ...
Many surfaces can be modeled by interpolating data points digitized from existing products. But the digitized data points could have measuring errors. To adjust the points, fairing...
In this paper, we introduce the design and implementation of VSPLUS, a high-level multi-user extension library to enable people to simultaneously manipulate interactive VRML world...
Software piracy is a major economic problem: it leads to revenue losses, it favors big software houses that are less hurt by these losses and it prevents new software economy model...