New Advanced Mass Casualty Breathing System for Oxygen Therapy: Phase 1
Bibliographic record
Abstract
This report describes the first phase of a project to develop an efficient mass casualty oxygen (O2) breathing system for O2 therapy in remote areas. In this first phase, DRDC Toronto was tasked to investigate the performance of the Pulmanex Hi-Ox mask (Hi-Ox) at O2 flow rates from 4 litres per minute (L min-1) down to 0.5 L min-1. Performance was evaluated with eighteen male and female volunteers between the ages of 21 and 56 years. Subjects were at rest in a seated position. The data showed that it is possible to use the Hi-Ox for O2 treatment with low flow rates. The peak concentration of inhaled oxygen was 31.7 5.6% at 0.5 L min-1 and 80.3 7.8% at 4 L min-1. To achieve a given level of O2 concentration, the Hi-Ox required significantly less O2 than the commonly used simple facemask. This will allow the use of portable O2 concentrators to supply oxygen to the Hi-Ox, increasing the efficiency and minimizing risks.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 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".