In this lecture, we continue to add complexity to system dynamics models in Vensim and Insight Maker by introducing two different forms of delays – fixed delays and smoothing/averaging delays. We spend some of the lecture discussing the fundamental difference between these delays, and we spend much of the rest of the lecture discussing how to implement these delays in both Vensim and Insight Maker. We also discuss some other functions (like STEP, for step responses, and PULSE/PULSE TRAIN) as well as how to use lookup tables to insert more arbitrary functions over time as inputs to systems. Finally, we spend some time discussing how higher-order smoothing/averaging delays help mix aspects of both fixed delays and pure smoothing delays.
Subscribe to:
Post Comments (Atom)
Popular Posts
-
In this lecture, we start drawing Causal Loop Diagrams (introduced in the previous lecture) in the System Dynamics Modeling tool Vensim (fro...
-
In this lecture, we review how to simulate a the behavior over time of simple negative feedback dynamical system (the filling of water in a ...
-
Unfortunately, due to a technical issue, a recording of the first half of this lecture was lost. Consequently, this recording skips through...
-
In this lecture, we introduce two very different concepts – randomness and chaos. These two terms are often mistakenly used as synonyms, but...
-
In this lecture, we define two different types of delays that are frequently used in simulation – fixed delays and smoothing (or averaging)...
-
In this lecture, we continue to add complexity to system dynamics models in Vensim and Insight Maker by introducing two different forms of d...
-
Introduces the course, its structure, and its policies. Also begins to introduce the notion of a "model" and the kinds of system ...
-
Further discussion of what is a "model" (in general), highlighting a wide variety of models including those instantiated in the p...
-
In this video, we cover more detailed descriptions of "stocks", "flows", and "converters" as well as how they...
-
In this lecture, we motivate the use of causal loop diagrams (CLD's) to better understand how feedback loops interact in complex system...
No comments:
Post a Comment