Preparing for the Bomb: The Development of Civil Defence Policy in Canada, 1948â1963
Bibliographic record
Abstract
During the period 1948 to 1963 civil defence in Canada developed in a number of stages that reflected changes in technology, weaponry and scientific discovery. The first stage of development, roughly between 1948 and 1952, witnessed only minor developments. Civil defence followed the Second World War practice, with a focus on air raid shelters and, if possible, evacuation. In the years 1952 to 1954 as the possibility of a nuclear attack became more real as a result of the Soviet development of intercontinental bombers, civil defence officials moved towards a policy of mass evacuation of target areas and the rescue of survivors. The detonation of a hydrogen bomb and the discovery of radioactive fallout in 1954 led to yet another change in civil defence plans. Civil defence officials became more convinced that mass evacuation of target areas was the answer, however, fallout shelters were also recommended for those areas outside the target area likely to be blanketed with radioactive debris. In the late 1950s and into the early 1960s civil defence again had to be redefined as intercontinental ballistic missiles (ICBMs) were developed and evacuation was no longer possible as nuclear attack could occur virtually without warning.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".