The Assessment and Foundation of Bell-Shaped  Testability Growth Effort Functions Dependent System  Testability Growth Models Based on NHPP

<div>A logistic curve with fixed parameters.</div>

Mathematical Problems in Engineering

fig9

Figure 9

Figure 9: The Assessment and Foundation of Bell-Shaped  Testability Growth Effort Functions Dependent System  Testability Growth Models Based on NHPP 

Figure 9 | The Assessment and Foundation of Bell-Shaped  Testability Growth Effort Functions Dependent System  Testability Growth Models Based on NHPP 