The Importance of Permafrost, Ice and Seasonally Frozen Ground to Road Systems in Canada
Bibliographic record
Abstract
Road structures on permafrost are discussed and include specific aspects of performance that can be linked to climate change. Selected case studies in Canada's north are presented to describe the issues and adaptations. Winter and ice roads are used extensively in Canada to resupply remote communities and to support resource development. The Tibbitt to Contwoyto winter road is infrastructure that supports the diamond mining industry in the Northwest Territories. This case study is used to demonstrate how climate change has impacted the operation and initiated the development of new technologies to optimize the shortening operating season. Seasonal weight limits play a significant role in the economy of the prairie region of Canada. It is important to consider potential changes in seasonal weight limits as a result of climate change. The aspects of seasonal weight limits that are vulnerable to climate change and possible adaptation strategies are discussed. The study concludes by making some summary statements on what this means in terms of reshaping the Canadian approach to transportation infrastructure management in Canada's cold regions. For the covering abstract see ITRD E139491.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.007 | 0.002 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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 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".