Journal Files A.A.S
J.F. AAS. Oct. 10, 1995
When you begin JIG analysis, fill in the following table to identify interdependencies.
| Situational Dimension | Variables |
| 1. Quantity of the good
2. Quantity of use 3. Quality of the good |
Physical units
Frequency and time of year Size, speed, weight, concentration of an ingredient |
|
Dimension |
Variables | Degree of avoidance and preemption costs |
| Common access lane to two houses:
1. Quantity.........good 2. Quantity.........use ---------------------------------------- 3. Quality........... |
Miles Person A 1 trip/day Person B 2 trips/day ----------------------------------------- 2 lanes, hard surface Both persons use same quality |
low avoidance cost
---------------------------------------- high preemption |
|
Here we find the cost of another user of a 10 mile, 2 lane, hard surface, well maintained road is zero. | ||
| Air Quality example:
1. Quantity ........ 2. Quantity ........ 3. Quality .......... |
An airshed Everyone breaths all the time Everyone must use some quality, e.g. 10 ppm sulphur |
high avoidance high preemption |
|
Here, the cost of another user of an airshed with 10 ppm sulphur dioxide is zero. | ||
| Flood control example:
1. Quantity ........ 2. Quantity ........ 3. Quality .......... |
A concrete dam giving flood protection to a watershed. Everyone uses all the time. Everyone necessarily uses same quality e.g. Protect against 100 yr. flood |
high avoidance high preemption |
|
The cost of another resident in the watershed with 100 yr. flood protection is zero. | ||
\pre-empt
If you have any questions or comments, please email schmid@pilot.msu.edu
