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tutorial 1

Lei Yan
This shows that the population of Heaven and Hell (assuming no other alternatives) keeps pace with the  current world population​.
  • 3 years 11 months ago

week 4 tut

Lei Yan
This is a Pork Consumption model. It is an independent model but can be combined with a Pork Production model to produce a simplified version of the Hog Commodity Cycle model by Meadows.
  • 3 years 11 months ago

week 4 pork consumption

Lei Yan
This is a Pork Consumption model. It is an independent model but can be combined with a Pork Production model to produce a simplified version of the Hog Commodity Cycle model by Meadows.
  • 3 years 11 months ago

week 4 ex2

Lei Yan
Recruits for marine fighter pilots sign up for 10 years after which they are retired. It takes a qualified pilot one year to train a new fighter pilot. During this year the instructor cannot be available for duty as a fighter pilot.
  • 3 years 11 months ago

week 4 lecture

Lei Yan
Recruits for marine fighter pilots sign up for 10 years after which they are retired. It takes a qualified pilot one year to train a new fighter pilot. During this year the instructor cannot be available for duty as a fighter pilot.
  • 3 years 11 months ago

week 2 tutorial 2.2 q2

Lei Yan
Model is similar to the basic inventory model found in many System Dynamics books. It includes a third-order delay for Deliveries to arrive after Order.
  • 3 years 11 months ago

tutorial week 2.2

Lei Yan
This is a first go at a simple inventory system. No delays between Orders and Deliveries. Inventory fails to attain the level of Desired Inventory.

Inventory

  • 3 years 11 months ago

week 1

Lei Yan
This compares the trajectories of density-dependent growth and exponential growth. The time series of density dependent growth during the early stages is identical to exponential growth. Time series without understanding the system structure can mislead.
  • 3 years 11 months ago

Clone of Marine Pilots 2

Lei Yan
Recruits for marine fighter pilots sign up for 10 years after which they are retired. It takes a qualified pilot one year to train a new fighter pilot. During this year the instructor cannot be available for duty as a fighter pilot.
  • 3 years 12 months ago

Clone of Pork Consumption

Lei Yan
This is a Pork Consumption model. It is an independent model but can be combined with a Pork Production model to produce a simplified version of the Hog Commodity Cycle model by Meadows.
  • 3 years 12 months ago

Clone of Inventory_2

Lei Yan
Model is similar to the basic inventory model found in many System Dynamics books. It includes a third-order delay for Deliveries to arrive after Order.
  • 3 years 12 months ago

Clone of Inventory-1a

Lei Yan
This is a first go at a simple inventory system. No delays between Orders and Deliveries. Inventory fails to attain the level of Desired Inventory.

Inventory

  • 3 years 12 months ago

Clone of Population of Heaven

Lei Yan
This shows that the population of Heaven and Hell (assuming no other alternatives) keeps pace with the  current world population​.
  • 3 years 12 months ago

Clone of Density-dependent growth

Lei Yan
This compares the trajectories of density-dependent growth and exponential growth. The time series of density dependent growth during the early stages is identical to exponential growth. Time series without understanding the system structure can mislead.
  • 3 years 12 months ago

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