Strain Index Effort Duration Score Calculator
Actual nonoverlapping effort-time occupancy with independently supplied duration-policy calibration; edition categorical steps must be represented externally, no hidden universal cutoffs. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Effort-duration percentage describes active effort time within a defined observation window.
Effort-duration percentage describes active effort time within a defined observation window.1
Translating it into a score requires an independently supplied grading curve. Use this tool to calculate strain Index Effort Duration Score from the supplied measurements and assumptions.
When to use Strain Index Effort Duration Score Calculator
Use this tool to calculate strain Index Effort Duration Score from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use Strain Index Effort Duration Score Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter observedEffortSeconds, observationWindowSeconds, callerDurationPercentCoordinates, callerMatchedDurationMultipliers, using the field meanings and rules below, then run the tool.
- Read observedEffortPercent, callerInterpolatedDurationMultiplier. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedEffortSeconds | Observed effort seconds | list of number | Required |
| observationWindowSeconds | Observation window seconds | number | Required |
| callerDurationPercentCoordinates | Caller duration percent coordinates | list of number | Required |
| callerMatchedDurationMultipliers | Caller matched duration multipliers | list of number | Required |
Enter a positive observation-window duration in seconds and nonnegative effort durations whose total does not exceed the window. Compute 100×totalEffort/window and interpolate that percentage using at least two strictly increasing caller grading coordinates and aligned responses; the query must lie inside their range. No overlap detection or official grading table is supplied.
effortPercent=100×ΣeffortSeconds/windowSeconds; score=linearInterpolate(callerCurve,effortPercent) Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| observedEffortPercent | Observed Effort Percent; follow the units, sign, ordering and evidence convention stated above | number |
| callerInterpolatedDurationMultiplier | Caller Interpolated Duration Multiplier; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedEffortSeconds": [
2,
3
],
"observationWindowSeconds": 20,
"callerDurationPercentCoordinates": [
0,
25,
50,
100
],
"callerMatchedDurationMultipliers": [
0.5,
1,
2,
3
]
},
"output": {
"observedEffortPercent": 25,
"callerInterpolatedDurationMultiplier": 1
}
}Limitations and assumptions
Translating it into a score requires an independently supplied grading curve. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Strain Index Total Multiplied Score Rater for this related task: A strain index combines separately established multipliers into a product.
Use OCRA Recovery Period Factor Lookup when its separate inputs and assumptions fit the question: An OCRA recovery factor depends on a documented assessment context and reference entry.
References
Similar or alternative tools
- Strain Index Total Multiplied Score Rater
A strain index combines separately established multipliers into a product.
- OCRA Recovery Period Factor Lookup
An OCRA recovery factor depends on a documented assessment context and reference entry.