Description
Assign a research trace sample under supplied flow sign and zero-boundary conventions.
Physiological models use measured signals, reference levels, rates, and physical balances. A content difference, normalized phase, or energy term depends on its unit system and model assumptions. Supplied coefficients and annotations define the calculation but do not establish biological plausibility or measurement accuracy.
Assign a research trace sample under supplied flow sign and zero-boundary conventions.
When to use this tool
Use Respiratory Zero Flow Boundary when you need this explicit signal, content, phase, flow, or physical-balance term under compatible supplied units.
How to use the tool and how it works
- Enter flow, zeroBelongsToInspiration, positiveIsInspiration. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read phase. Use the output convention below.
At flow zero choose inspiration if zeroBelongsToInspiration, otherwise expiration. At nonzero flow choose inspiration when the sign matches positiveIsInspiration and expiration otherwise.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| flow | Flow | Required. Finite number. |
| zeroBelongsToInspiration | Zero Belongs To Inspiration | Required. Boolean. |
| positiveIsInspiration | Positive Is Inspiration | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| phase | Phase | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"flow": 0,
"zeroBelongsToInspiration": true,
"positiveIsInspiration": true
},
"output": {
"phase": "inspiration"
}
}Limitations and assumptions
- Flow sign and zero ownership are explicit conventions, with exact zero comparison and no noise tolerance. The tool does not detect respiratory cycles, filter signals, or infer a clinical breathing state.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Signed zero is exported as zero.
Alternative or Complementary methods
Choose a physiological and measurement model suited to the signal or experiment. Verify coefficients, unit conversions, baseline definitions, and sampling support before combining local terms.
References
Similar or alternative tools
- Blood Flow Shear Rate Radius Factor
Ideal fully developed laminar Newtonian circular-tube wall shear-rate approximation, preserving signed flow and coherent units.
- Oxygen Consumption Fick One Flow Term
Fick oxygen mass-balance product from independently supplied compatible flow and content observations; no clinical parameter is estimated.