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首页> 外文会议>International Conference of the System Dynamics Society >Why and How Should We Replace the Tank-Pipe Analogy of our Stock-Flow Models by a Chemical Process Metaphor
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Why and How Should We Replace the Tank-Pipe Analogy of our Stock-Flow Models by a Chemical Process Metaphor

机译：为什么我们应该如何通过化学过程隐喻来更换我们的股票模型的油箱类比喻

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At the 2002 Congress of the System Dynamics Society, the author presented a new stock-flow diagramming language replacing the tank-pipe analogy classical in System Dynamics (SD) by a generalised chemical reaction. He argued that its use results often in better, more intuitive and less spaghetti-like stock-Flow diagrams (SFD). The paper was very well received by its reviewers. However, its presentation at the congress was disappointing since, despite its confrontational character, it elicited almost no reactions. With hindsight, it became evident that the author had focused too much on the new language and not enough on a detailed analysis of why the current method may be unsatisfactory. Henceforth, the present paper presents this detailed study of the SFD language used in SD. We restrict our attention to the parts of a SFD which represents flows of matter-like entities (tangibles). Focusing on models in population dynamics we begin by presenting their basic problem: visual complexity due to a spaghetti-like aspect. We then argue that, in addition, these models do not match well the structure of our mental models and thus lack intuitiveness. We then show that a new metaphor, replacing the tank Pipe systems of our classical SFD by generalised pluri-molecular chemical reactions called (N,M)-processes eliminates all the problems discussed. We present a way to combine a set of (N,M)-processes in a map displaying their interactions intuitively and parsimoniously. Finally, we argue that the use of these maps is not restricted to chemical or population dynamics models but may be used very fruitfully in other applications like for instance in Business Dynamics. We end up by referring the reader to our previous Palermo paper for a discussion of the translation of these maps in fully fledged computational models called. Kinetic Process Graphs or KPG. Which, in our opinion, should supersede the stock-flow diagramming method currently used.
机译：在2002年的系统动态社会大会上，作者提出了一种新的股票流程图语言，通过广义化学反应在系统动态（SD）中更换罐管类动物的类别。他认为，它的使用结果通常更好，更直观和更少的意大利面料库存流量图（SFD）。该论文由其审稿人很好。然而，由于其对抗性的特征，它在国会的介绍令人失望，但它几乎没有反应。随着后代的，它变得明显，提交人在新语言上专注于新语言，并且在详细分析目前方法可能不令人满意的情况下没有足够的分析。从此，本文介绍了SD中使用的SFD语言的详细研究。我们将注意力限制对SFD的部分，它代表物质状况的流量（拐角）。专注于人口动态的模型，我们首先提出他们的基本问题：由于意大利面的方面，视觉复杂性。然后，我们认为，除此之外，这些模型与我们的心理模型的结构不匹配，从而缺乏直观性。我们展示了一种新的隐喻，用广义的pluri分子化学反应代替所谓的经典SFD的坦克管道系统（n，m），消除了所讨论的所有问题。我们提出了一种方法来在地图中结合一组（n，m）处理直观地显示它们的交互。最后，我们认为这些地图的使用不限于化学或群体动态模型，但可以在其他应用中非常果实地使用，例如在商业动态中。我们最终通过将读者推荐给我们之前的巴勒莫纸上，以讨论被称为完全剥离的计算模型的这些地图的翻译。动力学过程图或kpg。在我们看来，这应该取代目前使用的股票流程图方法。

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