Titlebook: DEMOS A System for Discrete Event Modelling on Simula; G. M. Birtwistle Book 1979 G.M. Birtwistle 1979 event.modeling.Simula.system

調(diào)情

https://doi.org/10.1007/978-1-4899-6685-8event; modeling; Simula; system

Rankle

Entity-Resource Synchronisations,ypes: mutual exclusion and producer/consumer. In mutual exclusion synchronisations, items from a pool of resources are requested and released by the same entity. In producer/consumer synchronisations, producer entities make resources available to consumer entities (in the manner of relay runners handing on a baton).

一再困擾

Entity-Entity Cooperations,S or BIN objects). Sometimes this is not possible and an activity must be described as a coming together of two or more entities. We illustrate the problem by two simple modifications to the last example (CAR FERRY).

因無(wú)茶而冷淡

DEMOS A System for Discrete Event Modelling on Simula

GRIEF

ADORN

Waits Until,e resources required for its commencement are available; or it may need to wait and see which resources turn up next before deciding what it should do. Such complications arise all the time in real life simulations. We now give several short, but illustrative, examples.

BAIL

A保存的

Introduction,. how does the building of a new town nearby affect the local bus company? Which extra services should be provided and thus how many extra buses and crew will be needed? We may also need to implement totally fresh systems — how then do we justify and test our designs?

Anterior

FLASK

https://doi.org/10.1007/978-1-4615-1315-5is roughly a library of object definitions common to one particular topic, e.g. a HARBOUR context may contain class declarations for boats, cranes, tugs, the tide, etc., and a TRAFFIC context may contain class declarations for cars, trucks, etc. Once defined, a context serves as a library of predefined building blocks.