| Popis: |
Web-based simulations are performed by utilizing the resources of the Word Wide Web (WWW) such as proprietary components/models developed by third party modelers/manufacturers and web-based computational infrastructures (or compute servers). Access to such web-based resources, third party resources in particular, is usually circumscribed by a variety of pricing schemes. Therefore, optimal use of resources plays a critical role in minimizing the overall costs of web-based modeling and simulation which is directly dependent on the size of the model i.e., the total number of components constituting the model. Consequently, component aggregation and de-aggregation techniques that can be used to statically (before simulation) as well as dynamically (during simulation) vary the number of components constituting a model, have been developed. The techniques enable a range of tradeoffs between several modeling and simulation related parameters – thereby optimizing the resource consumption and overall costs. This paper presents a detailed discussion of the component aggregation and de-aggregation techniques along with the issues involved in implementing them in a Web-based Environment for Systems Engineering (WESE). Our studies indicate that these techniques provide an effective means to optimize the overall costs of web-based modeling and simulation. |
