Multiport averaging pitot tube to measure airflow rates from exhaust fans
Bibliographic record
Abstract
Multiport averaging Pitot tube to measure airflow rates from exhaust fans. Canadian Biosystems Engineering/Le génie des biosystèmes au Canada 50: 5.1- 5.7. Reliable airflow measurements for mechanically-ventilated animal confinement facilities are necessary to accurately determine gas emission rates. Instrumentation for this purpose must, however, be inexpensive, not intrusive, functional in very turbulent airflow, and robust under demanding field conditions. A multiport, averaging Pitot tube was constructed, calibrated in the laboratory using a standardized testing facility, and then tested and refined under simulated and actual field conditions as part of an airflow measurement system. Special features of the measurement system included a flow settling means, downstream orientation of the pressure inlets on the Pitot tube, and a physical filter to dampen pressure fluctuations in the signal line from the Pitot tube to the transducer. The relationship between the measurement signal and air
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".