V2EX comparative dynamics

Comparative Dynamics

定义 Definition

“Comparative dynamics” 指“比较动态分析”:研究当参数、政策或外部条件发生变化时,一个随时间演化的系统(如经济模型、生态系统、社会过程、物理系统)的调整路径、过渡过程与长期结果如何不同。常见于经济学、控制论、系统科学等领域。

发音 Pronunciation

/kmprtv danmks/

例句 Examples

We study comparative dynamics in a simple growth model.
我们在一个简单的增长模型中研究比较动态分析。

The paper uses comparative dynamics to show how a shock changes the economy’s adjustment path over time, not just its final equilibrium.
论文用比较动态分析说明:一次冲击如何改变经济随时间调整的路径,而不仅仅是最终均衡。

词源 Etymology

“Comparative” 来自拉丁语 comparativus(比较的),与 compare(比较)同源;“dynamics” 来自希腊语 dynamis(力量、动因),在现代学术语境中常指“系统随时间变化的规律”。合起来强调“对不同情景下的时间演化过程进行比较”。

相关词 Related Words

文学与作品中的用例 Literary Works

  • Recursive Methods in Economic Dynamics(Nancy L. Stokey & Robert E. Lucas, Jr., with Edward C. Prescott):讨论动态模型的演化与参数变化下的行为比较,常涉及“comparative dynamics”的思路与表述。
  • Dynamic Optimization: The Calculus of Variations and Optimal Control in Economics and Management(Morton I. Kamien & Nancy L. Schwartz):在动态优化与最优控制框架下,讨论系统对条件变化的动态响应,常与比较动态分析相连。
  • Microeconomic Theory(Andreu Mas-Colell, Michael D. Whinston & Jerry R. Green):在一般均衡与跨期/不确定性主题中,会用到与比较静态、动态调整相关的分析语言与概念体系。
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