Two simple rules for solving conflicts and for ordering the firings of tronsitions in a Petri net are studied: 1. The "Maximum Strategy" (Salwicki, Müldner) whereby maximal sets of simultaneously fireble transitions are ...

Spatial joins are join operations that involve spatial data types and operators. Spatial access methods are often used to speed up the computation of spatial joins. This paper addresses the issue of benchmarking spatial ...

Research and industry has tackled the object identification problem of data integration in many different ways. This paper presents a framework, that allows the evaluation of competing approaches. To this end, complexity ...

Interorganizational cooperation is more and more organized by the paradigm of services. The service-oriented architecture (SOA) provides a general framework for service interaction. It describes three roles, service ...

Petri nets are considered where the firings are controled by finite automata. The control may be distributed to different automata working over disjoint sets of transitions. To avoid deadlocks and conflicts for the whole ...

Control of autonomous mobile robots in dynamical environments is interesting from a cognitive point of view as well as under application view points. Stimulus response controls are often favored for fast reactions to the ...