Life Stress Model Parameters
The following table lists the parameters required by each life stress model. Only the Arrhenius, Eyring, and Inverse Power Law models support a time-varying stress, which requires additional parameters. Once the data set is calculated, results for these parameters are shown under Calculation results in the ALT Parameters pane. They also display in the ALT Results pane. You can specify fixed values for the parameters shown in the second column in the table. If desired, you can also specify a fixed value for the shape parameter when either the Weibull or lognormal distribution is selected. For more information, see Fixed Parameter Values.
|
Model
|
Parameters
|
Additional Parameters for Time-Varying Stress
|
||
|---|---|---|---|---|
|
Arrhenius
|
B
|
α0
|
||
|
C
|
α1
|
|||
|
Eyring
|
A
|
α0
|
||
|
B
|
α1
|
|||
|
Inverse Power Law
|
K
|
α0
|
||
|
n
|
α1
|
|||
|
Temperature-Humidity
|
A
|
...
|
||
|
b
|
||||
|
ϕ (Phi)
|
||||
|
Temperature-NonThermal
|
B
|
...
|
||
|
C
|
||||
|
n
|
||||
|
Generalized Eyring
|
A
|
...
|
||
|
B
|
||||
|
C
|
||||
|
D
|
||||
|
||||
|
Proportional Hazards
|
α0
|
...
|
||
|
α1
|
||||
|
...
|
||||
|
α11
|
||||
|
General Log-Linear
|
α0
|
...
|
||
|
α1
|
||||
|
...
|
||||
|
α11
|
||||
