Structures de glace des cours d'eau à forte pente : cristallographie et processus de croissance
Bibliographic record
Abstract
Réunissant une série de trois articles scientifiques, ce mémoire offre une description et une quantification des processus dynamiques de glace dans les cours d’eau à forte pente. Menée sur trois cours d’eau du bassin versant de la rivière Montmorency (à proximité de Québec, QC, Canada), cette recherche démontre grâce à l’analyse par CAT scan que la glace de fond et les barrages de glace se développent principalement par croissance in-situ des cristaux de frasil-fixé. La porosité des structures de frasil-fixé varie entre 23% et 52% alors que celle de des structures de glace colonnaire, uniquement retrouvées dans les barrages de glace, varie entre 0% et 1,5%. De plus, les taux de croissance et de fonte des barrages de glace varient de façon importante autour d’une moyenne d’environ 1 cm/h. Le développement complet d’un barrage de glace a été simulé avec succès à l’aide d’un modèle physique comportant plusieurs degrés de liberté.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 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".