Hierarchical, modular specification of discrete-event models of fers a basis for reusable model bases and hence for enhanced simulation of truly varied design alternatives. We describe an envi ronment which realizes the DEVS formalism developed in Zeigler (1984) for hierarchical, modular models. It is implemented in PC-Scheme, a powerful Lisp dialect for microcomputers contain ing an object-oriented programming subsystem. Since both the implementation and the underlying language are accessible to the user, the result is a capable medium for combining simula tion modelling and artificial intelligence techniques. The envi ronment is developed in an object-oriented manner which lends itself to model base organization using the entity structure knowl edge representation. It also serves as a medium for developing hierarchical distributed simulation models and architectures.

中文翻译：

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面向对象环境中的分层、模块化离散事件建模

离散事件模型的分层、模块化规范为可重复使用的模型库提供了基础，从而增强了对真正不同设计备选方案的模拟。我们描述了一个环境，它实现了 Zeigler (1984) 为分层、模块化模型开发的 DEVS 形式主义。它是在 PC-Scheme 中实现的，PC-Scheme 是一种强大的 Lisp 方言，用于包含面向对象编程子系统的微型计算机。由于用户可以访问实现和底层语言，因此结果是结合模拟建模和人工智能技术的有效媒介。环境是以面向对象的方式开发的，它有助于使用实体结构知识表示的模型库组织。