By Friedrich Winkelhage (auth.), Dr. Klaus Voss, Dr. Hartmann J. Genrich, Professor Dr. Grzegorz Rozenberg (eds.)
Concurrency and Nets is a distinct quantity within the sequence "Advances in Petri Nets". ready as a tribute to Carl Adam Petri at the celebration of his sixtieth birthday, it truly is dedicated to an excellent character and his pioneering and fruitful medical paintings. half I (70 pages of over six hundred) provides the congratulatory addresses and invited talks that got at an Anniversary Colloquium. The contributions of this half honor Carl Adam Petri and his paintings from many various views. half II is a suite of invited papers discussing a number of points of the subject matter Concurrency and Nets. those papers are contributed in part by way of researchers that have been or are nonetheless linked to the Petri Institute at GMD and in part via researchers whose clinical paintings offers with internet conception or similar method versions. the subjects variety from simple theoretical features to software orientated methods.
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Extra info for Concurrency and Nets: Advances in Petri Nets
Another point which is of major importance in layering is the service concept. As already stated, services of a layer (N-l) are used by layer N to implement the N-protocols and the latter layer N provides its N-services to the layer (N+1). Then, it appears rather interesting to show that the set "Nprotocols,(N-1)-services" meets the requirements of the Nservices /BUR/, /JUA/. One possibility has been given in /LAM/ for the general case. In /COU/ a projection is performed on the reachability graph.
For example, let us consider bounded nets, boundedness meaning that , for all possible markings, the number of tokens in any place of the net is bounded. One possible interpretation of this property is obtained when the places correspond to real objects to be implemented, as buffers for instance; in this case it appears that nets must be bounded, because in the opposite case, there exists a behavior for which the real capacity can be overflowed. Thus, if the place represents one buffer, and if this place is not bounded, an owerflow may occur in the corresponding buffer of the implemented system.
The tools must support the given design methodology. In other words they must aid the designers and be usable by possibly various design teams during the design phases. , specification, validation, implementation, testing, the model and its related tools or set of tools must be capable of: - representing the system specification, including all its important aspects. - handling the corresponding validations because the system is generally very complex - facilitating the actual implementation in order to decrease costs and delays - helping the generation of related testing procedures by means of the already existing information.